JP2013067619A - Antibody that binds to both il-17a and il-17f and method of using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an antibody that binds to IL-17A and IL-17F and that relates to blocking, inhibiting, reducing, antagonizing or neutralizing the activity of IL-17A and IL-17F, and to provide a method for using the antibody.SOLUTION: A cross-reactive monoclonal antibody or an antigen-binding fragment thereof binds to both IL-17A and IL-17F. A hybridoma of clone designation number 339.15.3.6 (ATCC Patent Deposit Designation PTA-7988) produces the antibody. A method for using the antibody in inflammation is disclosed.

Description

The present invention relates generally to the identification and isolation of antibodies that bind to IL-17A and Il-17F and methods of using the same.

Six members of the IL-17 family were originally identified as IL-17 and have been identified based on similarities to the prototypical members of the family now designated IL-17A. For example, see Non-Patent Document 1. Other members of the family are IL-17B, IL-17C, IL-17D, IL-17E (also known as IL-25) and IL-17F. For example, see Non-Patent Document 2; Non-Patent Document 3 and Non-Patent Document 4. Among the members of the family, IL-17A and IL-17F are 55
% Identity and by far the most similar (Non-Patent Document 3). In addition to their sequence similarity, these cytokines are both similar cell types, especially activated memory CD4.
+ Seems to be produced by T cells. For example, see Non-Patent Document 5.
See also Non-Patent Document 6; and Non-Patent Document 7.

Furthermore, both have been implicated as contributing factors to the progression and pathology of various inflammatory and autoimmune diseases in human and mouse models of human disease as well. In particular,
IL-17A and IL-17F are induced as major effector cytokines that induce an inflammatory response and thereby cause multiple autoinflammatory diseases including multiple sclerosis, rheumatoid arthritis and inflammatory bowel disease Yes.

Spriggs, M.M. K. “Interleukin-17 and its receptor”, J. Am. Clin. Immunol. (1997) 17: 366-369 Kawaguchi et al., “IL-17 cytokine family”, J. Am. Allergy Clin. Immunol. (2004) 114: 1265-1273 Kolls and Linden, “Interleukin-17 family members and information”, Immunity (2004) 21: 467-476. Mosley et al., “Interleukin-17 family and IL-17 receptors”, Cytokine Growth Factor Rev (2003) 14: 155-174. Agarwal et al., “Interleukin-23 promotes a distinct CD4 T cell activation state charac- tered by the production of interleukin-17”. Biol. Chem. (2003) 278: 1910-191 Langrish et al., "IL-23 drives a pathogenic T cell population that induces autoimmune inflation" J. Exp. Med. (2005) 201: 233-240 Starnes et al. “Cutting edge: IL-17F, a novel cytokinine selectively expressed in activated T cells and monocytices and endocrine genetics and endocrinec. Immunol. (2001) 167: 4137-4140

The activity shown in vivo of IL-17A and IL-17F indicates the clinical or therapeutic potential and need for IL-17A and IL-17F antagonists. In particular,
IL-17A and IL- which inhibit the immunological activity of IL-17A and IL-17F
An antibody that binds to 17F (antagonist antibody) may have such novel therapeutic properties. Thus, there remains a need in the art for antagonists to IL-17A and IL-17F.

The inflammatory cytokines IL-17A and IL-17F have a high degree of sequence similarity, share many biological properties, and are both produced by activated T cells. They are implicated as factors responsible for the progression of various autoimmune and inflammatory diseases including rheumatoid arthritis and asthma. Indeed, reagents that disable IL-17A function significantly improve disease incidence and severity in multiple human disease mouse models. IL-17A mediates its action through its interaction with IL-17RA in its cognate receptor IL-17 receptor (IL-17RA) and IL-17F. Therefore, in the present invention, IL-17A and IL-1
It was determined that cross-reactive antibodies could be useful as antagonists to 7F and therefore to block IL-17A and IL-17F. Accordingly, the present invention provides IL
-17A (polynucleotide sequence is shown as SEQ ID NO: 1 and the encoded polypeptide is shown as SEQ ID NO: 2) and IL-17F (polynucleotide sequence is SEQ ID NO: 3)
The encoded polypeptide is shown as SEQ ID NO: 4),
By providing therapeutic molecules (eg, antibodies) that can be inhibited, reduced, antagonized or neutralized,
Address this need. Accordingly, the present invention relates to IL-1 such as the antibodies described herein.
It relates to 7A and IL-17F antagonists. The present invention further provides its use in inflammatory diseases and related compositions and methods.

FIG. 3 is a graph showing a typical binding curve created by the Prizm software program.

(A) Overview)
Immune-related and inflammatory diseases are fairly complex, essential to respond to injury or trauma in normal physiology, initiate repair from injury or trauma, and initiate innate and acquired defenses against foreign organisms, Often the expression or result of a number of interconnected biological pathways. If these normal physiological pathways cause further injury or trauma, directly related to the intensity of the response, as a result of abnormal regulation or excessive stimulation, as a response to self, or as a combination thereof Or pathological condition occurs.

The occurrence of these diseases often involves multi-step pathways and often many different biological systems / routes, but intervention at critical points in one or more of these pathways can improve or treat Can be included. Therapeutic intervention can result from adverse process / pathway antagonism or beneficial process / pathway stimulation.

Many immune related diseases are known and have been extensively studied. Such diseases include immune-mediated inflammatory diseases (eg, rheumatoid arthritis, immune-mediated renal disease, hepatobiliary disease, inflammatory bowel disease (IBD), irritable bowel syndrome (IBS), psoriasis and asthma), non- Immune-mediated inflammatory diseases,
Infectious diseases, immunodeficiencies, abnormal growth, etc.

T lymphocytes (T cells) are an important component of the mammalian immune response. T cells recognize antigens associated with self-molecules encoded by genes within the major histocompatibility complex (MHC). The antigen can be presented with MHC molecules on the surface of antigen presenting cells, virus infected cells, cancer cells, grafts and the like. The T cell line eliminates these degenerative cells that pose a health hazard to the host mammal. T cells include helper T cells and cytotoxic T cells. Helper T cells proliferate extensively after recognition of antigen-MHC complexes on antigen presenting cells. Helper T cells
It also secretes various cytokines, ie lymphokines, that play a central role in the activation of B cells, cytotoxic T cells and various other cells involved in the immune response.

Central events in humoral and cellular immune responses are helper T cell activation and clonal expansion. Helper T cell activation is initiated by the interaction of the T cell receptor (TCR) -CD3 complex with antigen-MHC on the antigen presenting cell. This interaction mediates a series of biochemical events that induce resting helper T cells to enter the cell cycle (G0 to G1 transition), a high affinity receptor for IL-2 and sometimes IL-4. Of expression.
Activated T cells progress through the cycle, proliferate and differentiate into memory cells or effector cells.

In addition to signals mediated through the TCR, T cell activation may be further costimulated by cytokines released by antigen presenting cells or by interaction with antigen presenting cells and membrane-bound molecules on T cells. Including. Cytokines IL-1 and IL-
6 has been shown to confer costimulatory signals. Furthermore, the interaction of B7 molecules expressed on the surface of antigen-presenting cells with CD-28 and CTLA-4 molecules expressed on the surface of T cells results in T cell activation. Activated T cells have an increased number of cell adhesion molecules, such as
ICAM-1, integrin, VLA-4, LFA-1, CD56 and the like are expressed.

T cell proliferation in a mixed lymphocyte culture or mixed lymphocyte culture reaction (MLR) is an established indicator of the ability of a compound to stimulate the immune system. In many immune responses, inflammatory cells infiltrate the site of injury or infection. The migrating cells can be neutrophils, eosinophils, monocytes or lymphocytes, as can be determined by histological examination of the affected tissue (Current Pr
autocols in Immunology, John E. et al. Coligan (hen),
1994, John Wiley & Sons, Inc. ).

Immune related diseases can be treated by suppressing the immune response. The use of soluble receptors and / or neutralizing antibodies that inhibit molecules with immunostimulatory activity may be beneficial in the treatment of immune-mediated and inflammatory diseases. Molecules that suppress the immune response can be used (suppressing the protein directly or by using antibody agonists) to suppress the immune response and thus improve immune related diseases.

Interleukin-17 (IL-17A) has been identified as a cellular ortholog of the protein encoded by T lymphocyte-tropic herpesvirus thymily (HSV) [Rouvi.
er et al. Immunol. 150 (12): 5445-5456 (19993);
Yao et al. Immunol. , 122 (12): 5483-5486 (1995) and Yao et al., Immunity, 3 (6): 811-821 (1995)]. Subsequent characterization indicates that this protein is a potent cytokine that acts to induce pro-inflammatory responses in a wide variety of peripheral tissues. IL-17A is an approximately 32 kDa disulfide-linked homodimeric cytokine that is synthesized and secreted only by CD4 + activated memory T cells (Fossiez et al., Int. Rev. Imm.
unol. 16: 541-551 [1998]). Specifically, IL
-17 is synthesized as a 155 amino acid precursor polypeptide having an N-terminal signal sequence of 19-23 residues and secreted as a disulfide-linked homodimeric glycoprotein. Il-
17A is described in WO9518826 (1995), WO9715320 (1997) and W
O9704097 (1997) as well as U.S. Pat. No. 6,063,372.

Despite its limited tissue distribution, IL-17A exhibits pleiotropic biological activity in various cell types. IL-17A has been found to stimulate the production of many cytokines. It is expressed by IL-6, IL-8, IL-12, leukemia inhibitory factor (LIF), prostaglandin E2, MCP-1 and G- by adherent cells such as fibroblasts, keratinocytes, epithelial and endothelial cells. Induce CSF secretion. IL-17A is ICAM-1
It also has the ability to induce surface expression, T cell proliferation and CD34 ⁺ human precursor growth and differentiation into neutrophils. IL-17A is also involved in bone metabolism and plays an important role in the pathological conditions characterized by the presence of activated T cells and TNF-α production, such as rheumatoid arthritis and bone implant loosening. (Van Bezooijen et al.,
J. et al. Bone Miner. Res. 14: 1513-1521 [1999]). Activated T cells in synovial tissue from patients with rheumatoid arthritis have been found to secrete greater amounts of IL-17A than from normal patients or patients with osteoarthritis (Chabaud et al., Arthri).
tis Rheum. 42: 963-970 [1999]). This suggests that this pro-inflammatory cytokine actively contributes to synovial inflammation in rheumatoid arthritis. Apart from its pro-inflammatory role, IL-17A appears to contribute to the pathology of rheumatoid arthritis by yet another mechanism. For example, IL-17A is an osteoclast differentiation factor (O
(DF) mRNA has been shown to induce expression (Kotake et al., J. Clin.
Invest. 103: 1345-1352 [1999]). ODF stimulates the differentiation of progenitor cells into osteoclasts, the cells involved in bone resorption.

Since the concentration of IL-17A is significantly elevated in the synovial fluid of rheumatoid arthritis patients, IL
-17A-induced osteoclast formation appears to play an important role in bone resorption in rheumatoid arthritis. IL-17A is also thought to play an important role in other specific autoimmune disorders such as multiple sclerosis (Matusevicius et al., Mult. Scler., 5: 1).
01-104 [1999]). Additionally, IL-17A by intercellular signaling has been shown to stimulate the reduction of Ca ² + influx and [cAMP] in human macrophages (Jovanovic et al., J.Immunol, 160:. 3513 [ 1998]
). Fibroblasts treated with IL-17A induce activation of NF-κB [Yao et al., Immunity, 3: 811 (1995), Jovanovic et al., Supra], and macrophages treated with NF-κB and mitogens Activates activated protein kinase (Shalom-Barek et al., J. Biol. Chem., 273: 2746
7 [1998]).

Furthermore, IL-17A shares sequence similarity with mammalian cytokine-like factor 7 involved in bone and cartilage growth. Other proteins with which IL-17A polypeptides share sequence similarity are human embryo-derived interleukin-related factors (EDIRE) and interleukin-20.

Consistent with the widespread action of IL-17A, cell surface receptors for IL-17A have been found to be widely expressed in many tissues and cell types (Yao et al., Cytokine, 9:
794 [1997]). Amino acid sequence of human IL-17A receptor (IL-17RA) (8
66 amino acids) predicts a protein with a single transmembrane domain and a long 525 amino acid intracellular domain, but its receptor sequence is unique, and any of the receptors from the cytokine / growth factor receptor family Not similar. This indicates that IL-17A and its receptors can be part of a new family of signaling proteins and receptors, coupled with a lack of similarity to other known proteins of IL-17A itself. IL-1
7A activity has been shown to be mediated through binding to its unique cell surface receptor;
In previous studies, when T cells were contacted with soluble IL-17A receptor polypeptide, P
It has been shown to inhibit T cell proliferation and IL-2 production induced by HA, concanavalin A and anti-TCR monoclonal antibodies (Yao et al., J. Immunol.,
155: 5483-5486 [1995]). As such, there is great interest in identifying and characterizing novel polypeptides that have homology to known cytokine receptors, particularly IL-17A receptors.

The expression pattern of IL-17F appears to be similar to the expression pattern of IL-17A, including only activated CD4 + T cells and monocytes (Starnes et al., J. Biol.
Immunol. 167: 4137-4140 [2001]). IL-17F is expressed in G-CSF, IL-6 and IL-8 (Hymovitz et al., EMBO J
. 20: 5322-5341 [2001]), and TGF-b (St
arnes et al. Immunol. 167: 4137-4140 [2001]). It has recently been reported that IL-23, a cytokine produced by dendritic cells, can mediate the production of IL-17A and IL-17F primarily in memory T cells (Agarwal et al., J. Biol. Biol.Chem.278
: 1910-1914 [2003]).

Furthermore, overexpression or upregulation of IL-17A and IL-17F has been shown in arthritic and asthmatic patients (Mosley et al., Cytokine G).
row Factor Rev 14: 155-174 [2003]). With regard to arthritis, these cytokines act in a manner that is characteristic of cartilage and joint destruction associated with rheumatoid arthritis and osteoarthritis. For example, IL-17A and IL-17F
Due to the release of cartilage proteoglycans, glycosaminoglycans and collagen fragments,
It has been shown to enhance matrix degradation in articular cartilage explants while simultaneously inhibiting the synthesis of new proteoglycans and collagen (Cai et al., Cytokine 16: 1).
0-21 [2001]; Attur et al., Arthritis Rheum 44: 207.
8-2083 [2001]).

Similar to IL-17A, overexpression of IL-17F in mice also increases neutrophil recruitment in the lung, leading to increased expression of intrapulmonary Th1-related cytokines including IL-6, IFN-γ, IP-10 and MIG. Have been shown to occur (Starnes et al., J. Imm
unol. 167: 4137-4140 [2001]). Further, IL-17F is upregulated in T cells from allergen-treated asthmatic patients (Kawaguchi et al., J. Immunol 167: 4430-4435 [2001]) and induces IL-6 and IL-8 production in NHBE. Was found. In contrast to IL-17A, I
L-17F appears to inhibit angiogenesis in vitro (Starnes et al., J
. Immunol. 167: 4137-4140 [2001]).

IL-17F mRNA was not detected by Northern blot in various human tissues, but was dramatically induced upon activation of CD4 + T cells and monocytes (Id.).
In mice, Th2 cells and mast cells were found to express IL-17F upon activation. Dumont, Expert Opin. Ther. Patents1
3 (3) (2003). Similar to IL-17A, expression of IL-17F was found to be upregulated by IL-23 in mice.

The IL-17 cytokine / receptor family appears to represent a unique signaling system within the cytokine network that provides a breakthrough approach to the manipulation of immune and inflammatory responses. Accordingly, the present invention relates to antibodies that bind to IL-17A and IL-17F.

The present invention relates to an antibody that binds to IL-17A and IL-17F (IL-17A / F antibody)
As well as methods using IL-17A / F antibodies. The antibodies act as antagonists or agonists, particularly in pathological conditions associated with in vitro, in situ or in vivo diagnosis or treatment of mammalian cells or the presence (or absence) of IL-17A and / or IL-17F. Usefulness can be found.

Preferred embodiments of the invention include IL-17A and IL-17F (herein “cross-reactive antibodies”, “A / F antibodies”, “bispecific antibodies”, “IL-17A / F antibodies”). Antibody, and any fragment or substitution thereof. In particular, such antibodies can specifically bind to human IL-17A and IL-17F,
And / or may modulate biological activity associated with one or both of IL-17A and IL-17F and / or their receptors IL-17RA, IL-17RC,
Therefore, it is useful for the treatment of various diseases and pathological conditions such as immune related diseases. In a more specific embodiment, IL-17A (SEQ ID NO: 2) and IL-17F (SEQ ID NO: 4)
An antibody that specifically binds to a) is provided. Optionally, the antibody is a monoclonal antibody.

For example, the IL-17A / F antibody binds to an epitope on IL-17A and IL-17F, said epitope comprising residues Ile (23), Lys of the following sequence of human IL-17F:
(25), Gly (27), Thr (29) and Pro (34) and the equivalent sequences found in human IL-17A shown below. Residues 23, 25, 27, 29 and 3
4 is predicted to be on the surface of IL-17A and IL-17F and is therefore accessible for binding of the antibodies of the invention or equivalent protein binding antagonists.
hIL (Ile23-Pro34 of SEQ ID NO: 4) 17F I P K V G H T FFQK P
hIL 17A (Ile20-Pro31 of SEQ ID NO: 2) I V K A G I T IPRN P
Optionally, the IL-17A / F antibody binds to another epitope on IL-17A and IL-17F, said epitope comprising residues Arg (67), S of the following sequence of human IL-17F:
er (68), Thr (69), Ser (70), Pro (71), Trp (72), A
sn (73) as well as the equivalent sequence found in human IL-17A shown below. Residues 69, 71 and 73 are predicted to be on the surface of the bioactive cytokine and are therefore accessible for binding of the antibodies of the invention or equivalent protein binding antagonists.
hIL 17F (Arg67-Asn73 of SEQ ID NO: 4) RSTSPWN
hIL 17A (Arg69-Asn75 of SEQ ID NO: 2) RSTSPWN
Optionally, the IL-17A / F antibody binds to another epitope on IL-17A and IL-17F, said epitope comprising residues Asp (79), P of the following sequence of human IL-17F:
ro (80), Asn (81), Arg (82), Tyr (83), Pro (84) and Ser (85) and the equivalent sequences found in human IL-17A shown below. All residues of this epitope are predicted to be on the surface of bioactive cytokines,
Thus, access to the antibodies of the invention or equivalent protein binding antagonists is accessible.
hIL-17F (Asp79-Ser85 of SEQ ID NO: 4) DP N RYPS
hIL-17A (Asp81-Ser87 of SEQ ID NO: 2) DP E RYPS
Optionally, the IL-17A / F antibody binds to another epitope on IL-17A and IL-17F, said epitope comprising residue Thr (146) of the following sequence of human IL-17F:
Pro (147), Val (148), Ile (149), His (150), His (
151), Val (152) as well as the corresponding sequences found in human IL-17A shown below. These residues are predicted to be on the surface of the bioactive cytokine and are therefore expected to be accessible for binding of the antibodies of the invention or equivalent protein binding antagonists.
hIL-17F (Thr146-Vall52 of SEQ ID NO: 4) TPVIHV
hIL-17A (Thr148-Val 154 of SEQ ID NO: 2) TPIVHV
Optionally, the IL-17A / F antibody binds to another epitope on IL-17A and IL-17F, wherein the epitope is a residue from a separate peptide chain of human IL-17F shown below; or Is a discontinuous epitope comprising the equivalent sequence found in human IL-17A. Specifically, residues 105-109, 147-152 of hIL-17F and 107-111, 148-154 of hIL-17A are predicted to be on the surface of bioactive cytokines, and thus the antibodies of the invention Alternatively, access to equivalent protein binding antagonist binding is accessible.
hIL-17F sequence (Asp105-Asn109 [DISMN] of SEQ ID NO: 4 and P
ro147-Val152 [PVIHV])
hIL-17A sequence (Asp107-Asn111 [DYHMN] of SEQ ID NO: 2 and P
ro149-Val154 [PIVHV]]
Optionally, the IL-17A / F antibody binds to another epitope on IL-17A and IL-17F, which is a residue of two or three distinct peptide chains of human IL-17F shown below Or a discontinuous epitope comprising an equivalent sequence found in human IL-17A. Specifically, residues 81, 82, 121, 132, 134 of hIL-17F and 83, 84, 123, 134, 136 of hIL-17A are predicted to be on the surface of bioactive cytokines, and thus Access to binding of an antibody of the invention or equivalent protein binding antagonist is accessible.
hIL-17F sequence (Asp79-Ser85 [DPNRYPS] of SEQ ID NO: 4 and V
al119-Arg122 [VVRR] and Ser130-Glu134 [SFQLE
])
hIL-17A sequence (Asp81-Ser87 [DPERYPS] of SEQ ID NO: 2 and V
al121-Arg124 [VLRR] and Ser132-Glu136 [SFRRLE].
])
In certain embodiments, the present invention provides bispecific antibodies that bind to IL-17A and IL-17F. Bispecific antibodies (BsAbs) are antibodies that have two different antigen binding sites so that the antibody specifically binds to two different antigens. Antibodies with higher valency (ie, the ability to bind to more than two antigens) can also be prepared. They are referred to as multispecific antibodies.

The bispecific antibody is preferably a monoclonal antibody (MAb). In certain embodiments, the antibody is chimeric or humanized or fully human. Fully human antibodies can be made by procedures involving immunization of transgenic mice, and human immunoglobulin genes have been introduced into the mice as described below. Bispecific antibodies of the invention that bind to IL-17A and IL-17F are referred to herein as bispecific IL-17A / F antibodies or bispecific A
/ F MAb.

In yet another specific embodiment, a hybridoma cell line that produces a monoclonal antibody of the invention is provided. In another embodiment, the IL-17A / F antibody is one or more non-proteinaceous polymers or cytotoxic drugs or enzymes or radioisotopes selected from the group consisting of polyethylene glycol, polypropylene glycol and polyoxyalkylene. Bound to a fluorescent compound or a chemiluminescent compound.

Exemplary methods of the invention include methods of treating a pathological condition or disease in a mammal associated with or resulting from an increase or enhancement of IL-17A or IL-17F expression and / or activity. In the method of treatment, preferably IL-17A / which inhibits or reduces the respective receptor binding or activation to their receptor (s)
F antibodies can be administered. Optionally, the IL-17A / F antibody used in the method is I
Can block or neutralize the activity of L-17A and IL-17F, eg, IL-
A dual agonist that blocks or neutralizes the activity of 17A and IL-17F (ie, the cross-reactive IL-17A / F antibody described herein). The method contemplates the use of a single cross-reactive antibody or a combination of two or more antibodies.

The present invention also provides a composition comprising IL-17A / F antibody. Optionally, the composition of the invention comprises a pharmaceutically acceptable carrier or diluent. Preferably, the composition comprises one or more Il-17A / F antibodies in a therapeutically effective amount to treat a pathological condition or disease.

As such, the present invention relates to compositions and methods useful for the diagnosis and treatment of immune related diseases in mammals, including humans. The present invention is based on the identification of antibodies that bind to IL-17A and IL-17F (including agonist and antagonist antibodies) that stimulate or inhibit an immune response in a mammal. Immune related diseases can be treated by suppressing or enhancing the immune response. Antibodies that enhance the immune response stimulate or enhance the immune response to the antigen. Antibodies that stimulate an immune response can be used therapeutically where an enhanced immune response can be beneficial. Alternatively, an antibody that suppresses an immune response and attenuates or reduces an immune response to an antigen (eg, a neutralizing antibody) may be beneficial where attenuation of the immune response may be beneficial (eg,
Inflammation) can be used therapeutically.

Accordingly, antibodies that bind to IL-17A and IL-17F of the present invention (herein I
L-17A / F, A / F and / or cross-reactive IL-17A, also referred to as IL-17F antibody) is, for example, systemic lupus erythematosus, arthritis, psoriatic arthritis, rheumatoid arthritis, osteoarthritis, juvenile Chronic arthritis, spondyloarthritis, systemic sclerosis, idiopathic inflammatory myopathy, Sjogren's syndrome, systemic vasculitis, sarcoidosis, autoimmune hemolytic anemia, autoimmune thrombocytopenia, thyroiditis, diabetes mellitus, immune Mediated renal disease, demyelinating diseases of the central and peripheral nervous system, such as multiple sclerosis, idiopathic demyelinating polyneuropathy or Guillain-Barre syndrome and chronic inflammatory demyelinating polyneuropathy, hepatobiliary disease, such as , Infectious autoimmune chronic active hepatitis, primary biliary cirrhosis, granulomatous hepatitis and sclerosing cholangitis, inflammatory bowel disease, colitis, Crohn's disease Irritable enteropathy and endotoxemia, bullous dermatosis, erythema multiforme and atopic / contact dermatitis, psoriasis, immunity-mediated skin diseases including neutrophilic skin disease, cystic Fibrosis, allergic diseases such as asthma, allergic rhinitis, food allergies and urticaria, cystic fibrosis, lung immune diseases such as eosinophilic pneumonia, idiopathic pulmonary fibrosis, adult respiratory disease (ARD) ), Acute respiratory distress syndrome (ARDS) and inflammatory lung injury such as asthma, chronic obstructive pulmonary disease (COPD), airway hyperresponsiveness, chronic bronchitis, allergic asthma and hypersensitivity pneumonia, graft / organ rejection and It is also useful for preparing drugs / drugs for the treatment of transplant-related diseases including graft-versus-host disease, septic shock, multiple organ failure, cancer and immune-related and inflammatory diseases including angiogenesis

In a specific embodiment, such a drug / drug comprises a therapeutically effective amount of an IL-17A / F antibody together with a pharmaceutically acceptable carrier. The mixture is preferably sterile.

In one aspect, the invention relates to an isolated antibody that binds to IL-17A and IL-17F. In another aspect, the antibody mimics the activity of IL-17A and IL-17F (agonist antibody), or conversely, the antibody inhibits or neutralizes the activity of IL-17A and IL-17F (antagonist antibody). In another aspect, the antibody is preferably a monoclonal antibody having non-human complementarity determining region (CDR) residues and human framework region (FR) residues.

In a further embodiment, the invention relates to a method of identifying an agonist or antagonist antibody of Il-17A and IL-17F, said method comprising IL-17A and IL-17
Contacting F with a candidate molecule and monitoring biological activity mediated by IL-17A and / or IL-17F. In another embodiment, the invention provides IL- that binds to IL-17A and IL-17F in a mixture with a carrier or excipient.
It relates to a substance composition comprising a 17A / F agonist or antagonist antibody. In one aspect, the composition comprises a therapeutically effective amount of an IL-17A / F antibody. In another aspect, when the composition comprises such an agonist IL-17A / F antibody, the composition (a) enhances inflammatory cell infiltration into mammalian tissue in need thereof. (B) stimulate or enhance an immune response in a mammal in need thereof; (c) increase T lymphocyte proliferation in a mammal in need thereof in response to an antigen; (d) T Useful to stimulate lymphocyte activity or (e) increase vascular permeability. In a further aspect, where the composition comprises such an antagonist IL-17A / F antibody, the composition (a) reduces inflammatory cell infiltration into mammalian tissue in need thereof. (B) inhibit or reduce the immune response in a mammal in need thereof, (c) reduce the activity of T lymphocytes, or (d) in a mammal in need thereof in response to an antigen. Useful for reducing T lymphocyte proliferation. In another embodiment, the composition comprises a further active ingredient, which may be, for example, a further antibody or cytotoxic drug or chemotherapeutic agent. The composition is preferably sterile.

In another embodiment, the invention relates to a method of treating an immune related disorder in a mammal in need thereof, said method comprising a therapeutically effective amount of an agonist or antagonist IL-17A.
Administering a / F antibody to the mammal.

In a preferred embodiment, the immune related disorder is systemic lupus erythematosus, arthritis, psoriatic arthritis, rheumatoid arthritis, osteoarthritis, juvenile chronic arthritis, spondyloarthropathy, systemic sclerosis, idiopathic inflammatory myopathy, Sjogren's syndrome, systemic Vasculitis, sarcoidosis, autoimmune hemolytic anemia, autoimmune thrombocytopenia, thyroiditis, diabetes mellitus, immune-mediated renal disease, demyelinating diseases of the central and peripheral nervous systems, such as multiple sclerosis, Idiopathic demyelinating polyneuropathy or Guillain-Barre syndrome and chronic inflammatory demyelinating polyneuropathy, hepatobiliary disease such as infectious autoimmune chronic active hepatitis, primary biliary cirrhosis, granulomatous hepatitis and sclerosis Cholangitis, inflammatory bowel disease, colitis, Crohn's disease gluten-sensitive enteropathy and endotoxemia, bullous dermatosis, erythema multiforme and atopic・ Contact dermatitis, psoriasis, autoimmune or immune-mediated skin diseases including neutrophilic skin disease, cystic fibrosis, allergic diseases such as asthma, allergic rhinitis, food allergies and urticaria, cystic fibers , Pulmonary immune diseases such as eosinophilic pneumonia, idiopathic pulmonary fibrosis, adult respiratory disease (ARD), acute respiratory distress syndrome (ARDS)
And inflammatory lung injury such as asthma, chronic obstructive pulmonary disease (COPD), airway hypersensitivity, chronic bronchitis, allergic asthma and hypersensitivity pneumonia, transplantation-related including graft-organ rejection and graft-versus-host disease Selected from the group consisting of disease, septic shock, multiple organ failure, cancer and angiogenesis.

Optionally, the antibody is a monoclonal antibody, a humanized antibody, an antibody fragment or a single chain antibody.
In another embodiment, the present invention provides antibodies that specifically bind to IL-17A and IL-17F. The antibody can be labeled or immobilized on a solid support. In a further aspect,
The antibody is an antibody fragment, a monoclonal antibody, a single chain antibody or an anti-idiotype antibody.

In yet another embodiment, the invention relates to an isolated polynucleotide encoding a polypeptide of the invention, said polypeptide being capable of binding to IL-17A and IL-17F.

In yet another embodiment, the invention relates to an isolated polypeptide of the invention, wherein said polypeptide can bind to IL-17A and IL-17F.

Processes for generating antibodies are also described herein, including culturing host cells comprising a vector containing a suitable encoding nucleic acid molecule under conditions suitable for expression of the antibodies; Harvesting from the cell culture.

In yet another embodiment, the present invention provides anti-IL-1 in a mixture with a pharmaceutically acceptable carrier.
Compositions comprising 7A / F antibodies are provided. In one aspect, the composition comprises a therapeutically effective amount of the antibody. The composition is preferably sterile. The composition can be administered in the form of a liquid pharmaceutical formulation that can be stored to provide long-term storage stability. Alternatively, the antibody is a monoclonal antibody, antibody fragment, humanized antibody or single chain antibody.

In a further embodiment, the present invention provides: (a) a substance composition comprising an IL-17A / F antibody or an antibody that specifically binds to IL-17A and IL-17F; (b) a container comprising said composition; And (c) an article of manufacture comprising a label attached to said container or a package insert contained in said container for use of said IL-17A / F antibody in the treatment of immune related diseases. The composition can comprise a therapeutically effective amount of an IL-17A / F antibody.

In yet another embodiment, the invention relates to a method of diagnosing an immune-related disease in a mammal, the method comprising (a) in a test sample of tissue cells obtained from the mammal and (b) of the same cell type. Detecting a level of expression of a gene encoding one or both of IL-17A and / or IL-17F in a control sample of known normal tissue cells, which is higher or lower in the test sample than in the control sample The expression level indicates the presence of an immune related disease in the mammal from which the test sample was obtained.

In another embodiment, the present invention relates to a method of diagnosing an immune disease in a mammal, the method comprising: (a) contacting an IL-17A / F antibody with a test sample of tissue cells obtained from the mammal. And (b) detecting the formation of a complex between the antibody and one or both of IL-17A and IL-17F in a test sample, wherein the formation of the complex is the presence or absence of the disease Indicates. The detection can be qualitative or quantitative and can be performed compared to monitoring complex formation in a control sample of known normal tissue cells of the same cell type. The large amount of complex formed in the test sample indicates the presence or absence of an immune disease in the mammal from which the test tissue cells were obtained. The antibody preferably carries a detectable label. Complex formation is
For example, it can be monitored by light microscopy, flow cytometry, fluorimetry or other techniques known in the art. Usually, the test sample is obtained from a patient suspected of having an immune system deficiency or abnormality.

In another embodiment, the present invention relates to a method of diagnosing an immune related disease in a mammal,
The method comprises IL-17A and IL- in a test sample of tissue cells obtained from said mammal.
Detecting the presence or absence of 17F, wherein the presence or absence of IL-17A and IL-17F in the test sample indicates the presence of an immune-related disease in the mammal.

In a still further embodiment, the present invention provides a method of enhancing invasion of inflammatory cells from the vasculature into mammalian tissue, said method comprising (a) IL-17A / F in said mammal. Including a step of administering an agonist antibody, the infiltration of inflammatory cells from the vasculature in a mammal is enhanced. In a still further embodiment, the present invention provides a method of reducing infiltration of inflammatory cells from the vasculature into mammalian tissue, said method comprising said antagonist IL-1
Administering a 7A / F antibody to reduce inflammatory cell infiltration from the vasculature in a mammal.

In a still further embodiment, the present invention provides a method of increasing the activity of T lymphocytes in a mammal, the method comprising administering to said mammal an IL-17A / F agonist antibody, wherein the mammal The activity of T lymphocytes in is increased.

In yet a further embodiment, the present invention provides a method of reducing the activity of T lymphocytes in a mammal, said method comprising administering to said mammal an IL-17A / F antagonist antibody comprising: T lymphocyte activity in animals is reduced.

In a still further embodiment, the present invention provides a method of increasing T lymphocyte proliferation in a mammal, the method comprising administering to said mammal an IL-17A / F agonist antibody comprising: T lymphocyte proliferation in animals is increased.

In a still further embodiment, the present invention provides a method of reducing T lymphocyte proliferation in a mammal comprising the step of (a) administering an IL-17A / F antagonist antibody to said mammal. Including, the proliferation of T lymphocytes in mammals is reduced.

  The invention also provides articles of manufacture and kits that include one or more IL-17A / F antibodies.

The present invention provides an isolated antibody or antibody fragment that binds to a polypeptide, wherein the polypeptide comprises the amino acid sequence of SEQ ID NO: 2 or a fragment thereof, or the amino acid sequence of SEQ ID NO: 4 or a fragment thereof, A) Clone designation number 339.15.5.3 (A
Hybridoma of TCC patent deposit name PTA-7987); b) Clone designation number 33
9.15.3.6 (ATCC Patent Deposit Name PTA-7988) hybridoma; and c) Clone Designation No. 339.15.6.16 (ATCC Patent Deposit Name PTA-79)
It is possible to bind to an antibody produced by a hybridoma selected from the hybridomas of 89). Within one embodiment, the antibody is amino acid residues 23,25 of SEQ ID NO: 4.
, 27, 29 and 34. Within another embodiment, the antibody binds to an epitope comprising amino acid residues 20, 22, 24, 26 and 31 of SEQ ID NO: 2. Within another embodiment, the antibody has amino acid residues 23, 25, 27 of SEQ ID NO: 4.
, 29 and 34 or amino acid residues 20, 22, 24, 26 and 31 of SEQ ID NO: 2.
Binds to an epitope comprising Within another embodiment, the antibody binds to an epitope comprising amino acid residues 23-34 of SEQ ID NO: 4. Within another embodiment, the antibody binds to an epitope comprising amino acid residues 20-31 of SEQ ID NO: 2. Within another embodiment, the antibody binds to an epitope comprising amino acid residues 67-73 of SEQ ID NO: 4. Within another embodiment, the antibody binds to an epitope comprising amino acid residues 69-75 of SEQ ID NO: 2. Within another embodiment, the antibody binds to an epitope comprising amino acid residues 87-93 of SEQ ID NO: 4 or amino acid residues 69-75 of SEQ ID NO: 2. Within another embodiment, the antibody binds to an epitope comprising amino acid residues 79-85 of SEQ ID NO: 4. Within another embodiment, the antibody binds to an epitope comprising amino acid residues 81-87 of SEQ ID NO: 2. Within another embodiment, the antibody binds to an epitope comprising amino acid residues 79-85 of SEQ ID NO: 4 or amino acid residues 81-87 of SEQ ID NO: 2. Within another embodiment, the antibody binds to an epitope comprising amino acid residues 147-152 of SEQ ID NO: 4. Within another embodiment, the antibody binds to an epitope comprising amino acid residues 149-154 of SEQ ID NO: 2. Within another embodiment, the antibody is amino acid residue 1 of SEQ ID NO: 4.
It binds to an epitope comprising amino acid residues 149-154 of 47-152 or SEQ ID NO: 2. Within another embodiment, the antibody binds to a discontinuous epitope comprising amino acid residues 105-109 and 147-152 of SEQ ID NO: 4. Within another embodiment, the antibody binds to a discontinuous epitope comprising amino acid residues 107-111 and 148-154 of SEQ ID NO: 2. Within another embodiment, the antibody is amino acid residue 105 of SEQ ID NO: 4.
It binds to a discontinuous epitope comprising -109 and 147-152 or a discontinuous epitope comprising amino acid residues 107-111 and 148-154 of SEQ ID NO: 2. Within another embodiment, the antibody binds to a discontinuous epitope comprising amino acid residues 79-85, 119-122 and 130-134 of SEQ ID NO: 4. Within another embodiment, the antibody binds to a discontinuous epitope comprising amino acid residues 81-87, 121-124 and 132-136 of SEQ ID NO: 2. Within another embodiment, the antibody is a discontinuous epitope comprising amino acid residues 79-85, 119-122 and 130-134 of SEQ ID NO: 4 or amino acid residues 81-87,121 of SEQ ID NO: 2. It binds to discontinuous epitopes including 124 and 132-136. Within another embodiment, the antibody is suitable for parenteral, oral, intraperitoneal, intranasal, subcutaneous, aerosolized or intravenous administration in humans or animals. Within another embodiment, the antibody is a monoclonal antibody. Within another embodiment, the monoclonal antibody is selected from the group consisting of a mouse monoclonal antibody, a chimeric monoclonal antibody, a humanized monoclonal antibody, and a human monoclonal antibody. Within another embodiment, the antibody is an scFv. Within another embodiment, the antibody is a bispecific antibody or a bivalent antibody. Within another embodiment, the antibody binds to a polypeptide comprising the amino acid sequence of SEQ ID NO: 2 or a fragment thereof, or cross-reacts to bind to a polypeptide comprising the amino acid sequence of SEQ ID NO: 4 or a fragment thereof. Monoclonal antibody.

The present invention provides an isolated antiserum comprising an antibody or antibody fragment that binds to a polypeptide, wherein the polypeptide comprises the amino acid sequence of SEQ ID NO: 2 or a fragment thereof or the amino acid sequence of SEQ ID NO: 4 or a fragment thereof, The polypeptide is a) clone designated number 339.15.
. 5.3 (ATCC patent deposit name PTA-7987) hybridoma; b) Clone designation number 339.15.13.6 (ATCC patent deposit name PTA-7988) hybridoma; and c) Clone designation number 339.15 6.16 (ATCC Patent Deposit Name PTA-7789) can bind to an antibody produced by a hybridoma selected from hybridomas.

The present invention includes ATCC Patent Deposit Name PTA-7987, ATCC Patent Deposit Name PTA
An isolated antibody produced by a hybridoma selected from -7988 or ATCC patent deposit name PTA-7789, comprising a polypeptide comprising the amino acid sequence of SEQ ID NO: 2 or a fragment thereof and the amino acid of SEQ ID NO: 4 Reduce the pro-inflammatory activity of a polypeptide comprising a sequence or fragment thereof. Within one embodiment, the polypeptide is A
It can bind to an antibody produced by a hybridoma with TCC patent deposit name PTA-7987. Within one embodiment, the polypeptide can bind to an antibody produced by a hybridoma with ATCC Patent Deposit name PTA-7988. Within one embodiment, the polypeptide can bind to an antibody produced by a hybridoma with ATCC Patent Deposit name PTA-7989.

The present invention provides a hybridoma of ATCC Patent Deposit name PTA-7987 and an antibody produced by the hybridoma. The present invention refers to ATCC Patent Deposit Name PTA
-7988 hybridomas and antibodies produced by the hybridomas are provided. The present invention provides a hybridoma of ATCC patent deposit name PTA-7789 and an antibody produced by the hybridoma.

(B) Definition)
In the following description, a number of terms are used extensively. The following definitions are provided to facilitate understanding of the invention.

“Antibodies” (Abs) and “immunoglobulins” (Igs) are glycoproteins having the same structural characteristics. While antibodies exhibit binding specificity for a particular antigen, immunoglobulins include antibodies and other antibody-like molecules that lack antigen specificity. The latter type of polypeptide is produced, for example, at low levels by the lymphatic system and at high levels by myeloma. Thus, as used herein, the term “antibody” or “antibody peptide (s)” refers to an intact antibody or a fragment thereof that competes with the intact antibody for specific binding and is chimeric, humanized Including fully human and bispecific antibodies. In some embodiments, the binding fragment is generated by recombinant DNA technology. In further embodiments, binding fragments are generated by enzymatic or chemical cleavage of intact antibodies. The binding fragments are Fab, Fab ′, F (ab ′). sub. 2, F
including but not limited to v and single chain antibodies. Usually, “natural antibodies and immunoglobulins” are heterotetrameric glycoproteins of about 150,000 daltons, consisting of two identical light (L) chains and two identical heavy (H) chains. Each light chain is linked to the heavy chain by one disulfide covalent bond, but the number of disulfide bonds varies between heavy chains of different immunoglobulin isotypes. Each heavy and light chain also has regularly spaced intrachain disulfide bridges. Each heavy chain has at one end a variable domain (VH) and then a plurality of constant domains. Each light chain has a variable domain (VL) at one end and a constant domain at the other end. The constant domain of the light chain is aligned with the first constant domain of the heavy chain, and the light chain variable domain is aligned with the variable domain of the heavy chain. It is believed that certain amino acid residues form the interface between light and heavy chain variable domains (Clothia et al., J. Mol. Biol. 186: 651 (198
5); Novotny and Haber, Proc. Natl. Acad. Sci. U.
S. A. 82: 4592 (1985)).

As used herein, the term “isolated antibody” refers to an antibody that has been identified, separated and / or collected from its natural environment. Contaminant components of its natural environment are substances that can interfere with the diagnostic or therapeutic use of antibodies, and can include enzymes, hormones, and other proteinaceous or non-proteinaceous solutes. In a preferred embodiment, the antibody is (1) an antibody determined by the Lowry method.
Up to more than 5% by weight, most preferably up to more than 99% by weight, (2) to a degree sufficient to obtain an N-terminal or internal amino acid sequence of at least 15 residues using a spinning cup sequenator, or (3) SDS-PA under reducing or non-reducing conditions using Coomassie blue or preferably silver staining.
Purified to homogeneity by GE. Isolated antibody includes the antibody in situ within recombinant cells since at least one component of the antibody's natural environment will not be present. Ordinarily, however, isolated antibody will be prepared by at least one purification step.

“Mutant” anti-IL-17A and / or IL-17F and / or IL-17A /
An F antibody is used herein to refer to a “parent” anti-IL-17A and / or IL-17F and / or IL− by addition, deletion and / or substitution of one or more amino acid residues in the parent antibody sequence. 17A / F antibody refers to a molecule that differs in amino acid sequence from the amino acid sequence. In a preferred embodiment, the variant comprises one or more amino acid substitutions in one or more hypervariable regions of the parent antibody. For example, a variant can include at least one, eg, about 1 to about 10, preferably about 2 to about 5, substitutions in one or more hypervariable regions of the parent antibody. Usually, a variant is at least 75%, more preferably at least 80%, more preferably at least 85%, more preferably at least 90%, most preferably at least 95% amino acids with the parent antibody heavy or light chain variable domain sequence. It has an amino acid sequence with sequence identity. Identity or homology for this sequence, if necessary, to obtain maximum percent sequence identity
Defined herein as the percentage of amino acid residues in a candidate sequence that are identical to the parent antibody residue after aligning the sequences and introducing gaps. N-terminus to antibody sequence, C
None of terminal or internal extensions, deletions or insertions should be construed as affecting sequence identity or homology. Variants are human IL-17A and / or IL-
It retains the ability to bind to 17F and preferably has better properties than the parent antibody. For example, the variant may have a stronger binding affinity, an improved ability to inhibit IL-17A and / or IL-17F induced inflammation. To analyze such properties, anti-IL-17A and / or
Alternatively, since the configuration of IL-17F and / or IL-17A / F antibody affects its activity in the bioactivity assays disclosed herein, for example, the variant Fab form may be compared to the parent antibody Fab form. Or the full-length form of the variant should be compared to the full-length form of the parent antibody. Variant antibodies of particular interest herein are those that exhibit an improvement in biological activity of at least about 10 fold, preferably at least about 20 fold, and most preferably at least about 50 fold when compared to the parent antibody.

As used herein, the term “parent antibody” refers to an antibody encoded by an amino acid sequence used to prepare a variant. Preferably, the parent antibody has a human framework region and, if present, a human antibody constant region (s). For example, the parent antibody can be a humanized or human antibody.

The term “agonist” refers to any compound, including a protein, polypeptide, peptide, antibody, antibody fragment, large molecule or small molecule (less than 10 kD), that increases the activity, activation or function of another molecule.

The term “antagonist” reduces the activity, activation or function of another molecule,
Refers to any compound, including proteins, polypeptides, peptides, antibodies, antibody fragments, large molecules or small molecules (less than 10 kD).

The term “binding of a polypeptide of the invention to a ligand” refers to binding of a ligand polypeptide of the invention to a receptor; binding of a receptor polypeptide of the invention to a ligand; antigen or epitope of an antibody of the invention Binding of an antigen or epitope of the present invention to an antibody; binding of an antibody of the present invention to an anti-idiotype antibody; binding of an anti-idiotype antibody of the present invention to a ligand; Binding to a receptor; including but not limited to binding to a ligand, receptor or antibody of the anti-anti-idiotype antibody of the present invention.

A “bivalent antibody” other than a “multispecific” or “multifunctional” antibody in some embodiments,
It is understood to include binding sites with the same antigen specificity.

A “bispecific” or “bifunctional” antibody is a hybrid antibody having two different heavy / light chain pairs and two different binding sites. Bispecific antibodies can be produced by a variety of methods including, but not limited to, hybridoma fusion or Fab ′ fragment binding. See, for example, Songsivirai and Lachmann (1990), Clin. Exp
. Immunol. 79: 315-321; Kostelny et al. (1992), J. MoI. Im
munol. 148: 1547-1553.

The term "chimeric antibody (s)" or "chimeric antibody (s)" is an antibody whose light chain / heavy chain genes are usually constructed by genetic engineering from immunoglobulin variable / constant region genes belonging to different species. Point to. For example, the variable segment of a gene derived from a mouse monoclonal antibody can be bound to human constant segments such as γ1 and γ3. Thus, a typical therapeutic chimeric antibody is a hybrid protein comprising a variable or antigen binding domain derived from a murine antibody and a constant domain derived from a human antibody, although other mammalian species may be used. Specifically, a chimeric antibody is one in which all or part of the hinge and constant region of an immunoglobulin light chain, heavy chain, or both are replaced in place of the corresponding region from another animal's immunoglobulin light chain or heavy chain. Produced by modified recombinant DNA technology. In this way, the antigen-binding portion of the parent monoclonal antibody is joined to the backbone of another species of antibody. Wi
In one approach described in Nter et al., European Patent 0239400, a substitution of one species complementarity determining region (CDR) in place of another species complementarity determining region, eg, human heavy and light chain CDRs from immunoglobulin variable region domains, CDs from mouse variable region domains
Describes substitution with R. These denatured antibodies can then be combined with human immunoglobulin constant regions to form antibodies that are human except for substituted mouse CDRs specific for the antigen.
Methods for conjugating antibody CDR regions are described, for example, in Riechmann et al. (1988) Nat.
ure 332: 323-327 and Verhoeyen et al. (1988) Science.
239: 1534-1536.

As used herein, the term “effective neutralizing titer” is an animal (human or cotton) that has been shown to be clinically effective (in humans) or to reduce 99% virus, eg, in cotton rats. Refers to the amount of antibody corresponding to the amount present in the serum of the rat. 9
The 9% reduction is, for example, 10 ³ pfu, 10 ⁴ pfu, RSV (rous sarcoma virus)
10 ⁵ pfu, 10 ⁶ pfu, 10 ⁷ pfu, 10 ⁸ pfu or 10 ⁹ pfu).

As used herein, the term “epitope” refers to the portion of an antigen to which a monoclonal antibody specifically binds. Thus, the term “epitope” includes any protein determinant capable of specific binding to an immunoglobulin or T cell receptor. Epitopic determinants usually consist of chemically active surface populations of molecules such as amino acids or sugar side chains and usually have specific three dimensional structural characteristics and specific charge characteristics. More specifically, as used herein, “IL-17A epitope”, “IL-17F epitope” and / or “
The term “IL-17A / F epitope” refers to the portion of the corresponding polypeptide that has antigenic or immunogenic activity in an animal, preferably a mammal, most preferably a mouse or a human. Epitopes with immunogenic activity induce I antibody responses in animals
A portion of an L-17A and / or IL-17F polypeptide. The epitope having antigenic activity can be determined by any method well known in the art, eg, IL-17A and / or IL-17 to which the antibody immunospecifically binds as quantified by immunoassay.
A portion of an F polypeptide. Antigenic epitopes need not necessarily be immunogenic. Such epitopes can be linear in nature or can be discontinuous epitopes. Thus, as used herein, the term “conformational epitope” refers to a discontinuous epitope formed by a spatial relationship between amino acids of an antigen other than a series of unbroken amino acids. More specifically, the term epitope refers to IL-17A and IL-17.
As applied to F, encompasses the epitopes defined herein.

As used herein, the term “epitope tagged” refers to anti-IL-17A and / or IL-17F and / or IL-17A / fused to an “epitope tag”.
Refers to F antibody. An epitope tag polypeptide has sufficient residues to confer an epitope against which an antibody can be made, but is short enough so as not to interfere with the activity of the antibody of the invention.
Preferably, the epitope tag is sufficiently unique so that antibodies against it do not substantially cross-react with other epitopes. In general, suitable tag polypeptides have at least 6 amino acid residues, usually about 8-50 amino acid residues (preferably about 9-30 amino acid residues). Examples include the flu HA tag polypeptide and its antibody 12CA5 (Field
Et al., Mol. Cell. Biol. 8: 2159-2165 (1988)); c-myc
Tag and corresponding 8F9, 3C7, 6E10, G4, B7 and 9E10 antibodies (Eva
n et al., Mol. Cell. Biol. 5 (12): 3610-3616 (1985));
And herpes simplex virus glycoprotein D (gD) tag and antibodies thereof (Paborsky et al., Protein Engineering 3 (6): 547-553 (1990))
Is included. In some embodiments, the epitope tag is a “salvage receptor binding epitope”. As used herein, the term “salvage receptor binding epitope” refers to an IgG molecule (eg, IgG ₁₎ involved in increasing the in vivo serum half-life of an IgG molecule.
, IgG ₂ , IgG ₃ or IgG ₄ ).

As used herein, the term “fragment” refers to an amino acid of an antibody that immunospecifically binds to an Il-17A or IL-17F polypeptide or an Il-17A or IL-17F or both IL-17A, IL-17F polypeptides. At least 5 contiguous amino acid residues, at least 10 contiguous amino acid residues, at least 15 contiguous amino acid residues, at least 20 contiguous amino acid residues, at least 25 contiguous amino acid residues, at least 40 of the sequence Adjacent amino acid residues, at least 50 adjacent amino acid residues, at least 60 adjacent amino acid residues, at least 70 adjacent amino acid residues, at least 80 adjacent amino acid residues, at least 90 adjacent amino acid residues , At least 100 contiguous amino acid residues, at least 125 contiguous Amino acid residues, at least 150 contiguous amino acid residues,
A peptide or polypeptide comprising an amino acid sequence of at least 175 contiguous amino acid residues, at least 200 contiguous amino acid residues or at least 250 contiguous amino acid residues.

As used herein, the term “immunoglobulin” refers to a protein consisting of one or more polypeptides substantially encoded by immunoglobulin genes. One form of immunoglobulin constitutes the basic structural unit of an antibody. This form is a tetramer, consisting of two identical immunoglobulin chain pairs, each pair having one light chain and one heavy chain. In each pair, the light and heavy chain variable regions are both involved in antigen binding, and the constant region is involved in antibody effector function.

A full-length immunoglobulin “light chain” (approximately 25 Kd or 214 amino acids) is encoded by a variable region gene (approximately 110 amino acids) at the NH2 terminus and a kappa or lambda constant region gene at the COOH terminus. A full-length immunoglobulin “heavy chain” (approximately 50 Kd or 446 amino acids) is similarly encoded by a variable region gene (approximately 116 amino acids) and one of the aforementioned constant region genes (approximately 330 amino acids). Heavy chains are classified as gamma, mu, alpha, delta, or epsilon, and antibody isotypes are IgG, IgM, Ig, respectively.
Defined as A, IgD and IgE. Within the light and heavy chains, the variable and constant regions are joined by a “J” region of about 12 or more amino acids, and the heavy chain is a “D” of about 10 or more amino acids.
Including regions (Fundamental Immunology (Paul, W. (ed.),
Second edition, Raven Press, N.I. Y. 1989), chapter 7 in its entirety (incorporated by reference in its entirety for all purposes).

An immunoglobulin light or heavy chain variable region consists of a “framework” region interrupted by three hypervariable regions. Thus, the term “hypervariable region” refers to the amino acid residues of an antibody which are responsible for antigen binding. The hypervariable region is an amino acid residue derived from a “complementarity determining region” or “CDR” (ie, residues 24-34 (L1), 50-5 in the light chain variable domain).
6 (L2) and 89-97 (L3) and 31-35 (H in the heavy chain variable domain)
1), 50-65 (H2) and 95-102 (H3) (Kabat et al., Sequenc
es of Proteins of Immunological Interest
, Fifth Edition, Public Health Service, National Ins
tites of Health, Bethesda, Md. (1991)) and / or residues from the “hypervariable loop” (ie, residues 26- in the light chain variable domain).
32 (L1), 50-52 (L2) and 91-96 (L3) and 26-32 (H1), 53-55 (H2) and 96-101 (H3) in the heavy chain variable domain; Cho
thia and Lesk, 1987, J. et al. Mol. Biol. 196: 901-917)
(Both incorporated herein by reference). "Framework area" or "FR
“Residues are variable domain residues other than the hypervariable region residues as defined herein. The sequences of the different light or heavy chain framework regions are relatively conserved within the species. Thus, a “human framework region” is a framework region that is substantially identical (about 85% or more, usually 90-95% or more) to the framework region of a natural human immunoglobulin. The framework region of an antibody, which is a composite framework region of constituent light and heavy chains, plays a role in positioning and aligning CDRs. CDRs are primarily responsible for binding antigens to epitopes.

Thus, the term “humanized” immunoglobulin refers to an immunoglobulin comprising a human framework region and one or more CDRs from a non-human (usually mouse or rat) immunoglobulin. Non-human immunoglobulins that confer CDRs are referred to as “donors” and human immunoglobulins that confer a framework are referred to as “acceptors”. The constant region need not be present, but if present, it should be substantially identical to the human immunoglobulin constant region, ie, at least about 85-90%, preferably about 95% or more identical. Thus, all parts of a humanized immunoglobulin are likely to exclude CDRs,
It is substantially identical to the corresponding portion of the native human immunoglobulin sequence. A “humanized antibody” is an antibody comprising a humanized light chain and a humanized heavy chain immunoglobulin. For example, a humanized antibody will not encompass the typical chimeric antibody defined above, for example because the entire variable region of the chimeric antibody is non-human.

As used herein, the term “human antibody” includes an antibody having the amino acid sequence of a human immunoglobulin, from a human immunoglobulin library or, for example, in US Pat. No. 5,939,598. It includes antibodies isolated from one or more human immunoglobulin transgenic animals that do not express endogenous immunoglobulins, as described by Kucherlapati et al.

The term “genetically modified antibody” refers to an antibody whose amino acid sequence differs from that of a natural antibody. Because of the relevance of recombinant DNA technology in the production of antibodies, it need not be limited to the sequence of amino acids found in natural antibodies, and the antibodies can be redesigned to obtain the desired properties. The possible mutations are many, ranging from as few as one or a few amino acid changes to, for example, complete redesign of variable or constant regions. In general, constant region alterations are made to improve or modify properties such as complement binding, membrane interaction, and other effector functions. Changes in the variable region are made to improve antigen binding properties.

In addition to antibodies, immunoglobulins can be, for example, single chain or Fv, Fab and (Fab ′)
₂ as well as bispecific antibodies, linear antibodies, multivalent or multispecific hybrid antibodies (as also described above, Lanzavecchia et al., Eur. J. Immunol. 17, 10
5 (detailed in 1987) and also in single chains (eg Husto
n et al., Proc. Natl. Acad. Sci. U. S. A. , 85, 5879-588
3 (1988) and Bird et al., Science, 242, 423-426 (1988).
). These may be present (Hod et al., “Imm
unology ", Benjamin, NY, 2nd edition (1984) and Hunk
See generally, appiler and Hood, Nature, 323, 15-16 (1986). Which are incorporated herein by reference).

As used herein, “single chain Fv”, “single chain antibody”, “Fv” or “scFv”
The term refers to an antibody fragment that contains variable regions from heavy and light chains, but lacks constant regions within only a single polypeptide chain. In general, single chain antibodies further comprise a polypeptide linker between the VH and VL domains that allows the formation of a desired structure that may allow antigen binding. Single chain antibodies are the pharmacology of monoclonal.
Antibodies, Vol. 113, Rosenburg and Moore (ed.), Sp
Detailed discussion by Pluckthun at Ringer-Verlag, New York, pp. 269-315 (1994). Various methods of making single chain antibodies are known and are described in US Pat. Nos. 4,694,778 and 5,260,203; International Patent Application Publication No. WO 88/01649; Bird (1988) Science 242: 423.
-442; Huston et al. (1988) Proc. Natl. Acad. Sci. USA
85: 5879-5883; Ward et al. (1989) Nature 334: 54454;
The methods described in Skerra et al. (1988) Science 242: 1038-1041 are included, the disclosures of which are incorporated by reference as appropriate. In a specific embodiment, single chain antibodies may be bispecific and / or humanized.

A “Fab fragment” consists of one light chain and the C _H 1 and variable regions of one heavy chain. F
The heavy chain of an ab molecule cannot form a disulfide bond with another heavy chain molecule.

A “Fab ′ fragment” is a light chain and an interchain disulfide bond formed between two heavy chains,
In order to be able to form F (ab ′) ₂ molecules, it contains a single heavy chain containing more constant regions between the C _H 1 and C _H 2 domains.

“F (ab ′) ₂ fragment” refers to a portion of the constant region between the C _H 1 and C _H 2 domains such that an interchain disulfide bond is formed between the two light chains and the two heavy chains. Including two heavy chains.

The term “bispecific antibody” refers to a small antibody fragment having two antigen-binding sites, which fragment is a heavy chain variable domain (V _H ) bound to a light chain variable domain (V _L ) in the same polypeptide chain. ) (V _H -V _L ). By using a linker that is too short to allow pairing between two domains on the same chain, the domain must be paired with the complementary domain of another chain, creating two antigen-binding sites. To do. Bispecific antibodies are described, for example, in European Patent No. 404,097; WO 93/11161; and Hollinger et al., Proc.
Natl. Acad. Sci. USA 90: 6444-6448 (1993).

The term “linear antibody” refers to Zapata et al., Protein Eng. 8 (10)
: Refers to the antibody described in 1057-1062 (1995). Briefly, a pair of tandem Fd segments these antibodies which form a pair of antigen binding regions _{(V H -C H 1-V} H
Including the -C _H 1). Linear antibodies can be bispecific or monospecific.

As used herein, the term “immunologically functional immunoglobulin fragment” refers to a polypeptide fragment comprising at least the variable domains of an immunoglobulin heavy chain and light chain. An immunologically functional immunoglobulin fragment of the invention binds to a ligand, blocks binding of the ligand to its receptor, interferes with a biological response resulting from ligand binding to the receptor, or Any combination is possible. Preferably, the immunologically functional immunoglobulin fragment of the present invention specifically binds IL-17A and IL-17F.

The term “monoclonal antibody” as used herein is not limited to antibodies produced through hybridoma technology. The term “monoclonal antibody” refers to an antibody that is derived from a single clone, including any eukaryotic, prokaryotic, or phage clone, and not the method by which it is produced.

As used herein, a “nucleic acid” or “nucleic acid molecule” is a polynucleotide, eg, deoxyribonucleic acid (DNA) or ribonucleic acid (RNA), an oligonucleotide, a fragment generated by the polymerase chain reaction (PCR), and It refers to a fragment produced by any of ligation, cleavage, endonuclease action and exonuclease action. Nucleic acid molecules can consist of monomers that are natural nucleotides (eg, DNA and RNA) or analogs of natural nucleotides (eg, natural nucleotides in the α-enantiomer form) or a combination of both. Modified nucleotides can have changes in sugar moieties and / or pyrimidine or purine base moieties. Sugar modifications include, for example, substitution of one or more hydroxyl groups with halogens, alkyl groups, amines and azide groups, or sugars can be functionalized as ethers or esters. Furthermore, the entire sugar moiety can be replaced with sterically and electronically similar structures, such as aza sugars and carbocyclic sugar analogs. Examples of modifications at the base moiety include alkylated purines and pyrimidines, acylated purines or pyrimidines or other well-known heterocyclic substitutions. Nucleic acid monomers can be linked by phosphodiester bonds or analogs of such bonds. Analogs of phosphodiester bonds include phosphorothioates,
Including phosphorodithioate, phosphoroselenoate, phosphorodiselenoate, phosphoroanilothioate, phosphoranilide, phosphoramidate and the like. The term “nucleic acid molecule” also includes so-called “peptide nucleic acids” comprising natural or modified nucleobases attached to a polyamide backbone. The nucleic acid may be single stranded or double stranded.

The term “complement of a nucleic acid molecule” refers to a nucleic acid molecule that has a complementary nucleotide sequence and reverse direction as compared to a reference nucleotide sequence. For example, the sequence 5'ATGCACGGGG3 '
Is complementary to 5′CCCGTGCAT3 ′.

The term “degenerate nucleotide sequence” refers to a sequence of nucleotides that includes one or more degenerate codons as compared to a reference nucleic acid molecule encoding a polypeptide. Degenerate codons contain different nucleotide triplets, but encode the same amino acid residue (ie, GAU and GAC triplets each encode Asp).

The term “structural gene” is transcribed into messenger RNA (mRNA), then
A nucleic acid molecule that is translated into a sequence of amino acids that characterizes a particular polypeptide.

An “isolated nucleic acid molecule” is a nucleic acid molecule that is not integrated into the genomic DNA of an organism. For example, a DNA molecule that encodes a growth factor and that has been separated from the genomic DNA of a cell is an isolated DNA molecule. Another example of an isolated nucleic acid molecule is a chemically synthesized nucleic acid molecule that is not integrated into the genome of an organism. A nucleic acid molecule isolated from a particular species is smaller than the complete DNA molecule of a chromosome from that species.

A “nucleic acid molecule construct” is a single-stranded or double-stranded nucleic acid molecule that has been modified by human intervention to contain segments of nucleic acid joined and juxtaposed in a non-naturally occurring configuration.

“Linear DNA” refers to non-circular DNA molecules having 5 ′ and 3 ′ free ends. Linear DNA
Can be prepared from closed circular DNA molecules such as plasmids by enzymatic digestion or physical disruption.

“Complementary DNA (cDNA)” is a single-stranded DNA molecule formed from an mRNA template by reverse transcriptase. Usually, a primer complementary to the mRNA portion is used to initiate reverse transcription. Those skilled in the art will recognize a double-stranded DN comprising such a single-stranded DNA molecule and its complementary DNA strand.
The term “cDNA” is also used to refer to the A molecule. The term “cDNA” refers to RNA
It also refers to a clone of a cDNA molecule synthesized from a template.

A “promoter” is a nucleotide sequence that directs the transcription of a structural gene. Usually, a promoter is located in the 5 'non-coding region of a gene, proximal to the transcription start site of a structural gene. Sequence elements within the promoter that function at the start of transcription are often characterized by a consensus nucleotide sequence. These promoter elements include RNA polymerase binding sites, TATA sequences, CAAT sequences, differentiation specific elements (DSE; McGeh)
ee et al., Mol. Endocrinol. 7: 551 (1993)), cyclic AMP response element (CRE), serum response element (SRE; Treisman, Seminar)
s in Cancer Biol. 1:47 (1990)), glucocorticoid response element (GRE) and CRE / ATF (O'Reilly et al., J. Biol. C).
hem. 267: 19938 (1992)), AP2 (Ye et al., J. Biol. Chem).
. 269: 25728 (1994)), SP1, cAMP response element binding protein (C
REB; Loeken, Gene Expr. 3: 253 (1993)) and octamer factor (Watson et al. (Ed.), Molecular Biology of the Ge).
ne, 4th edition (Benjamin / Cummings Publishing Comp
any, Inc. 1987) and Lemaigre and Rousseau, Bio
chem. J. et al. 303: 1 (see 1994) in general) for binding sites of other transcription factors. If the promoter is an inducible promoter, the rate of transcription increases in response to the inducer. In contrast, when the promoter is a constitutive promoter, the rate of transcription is not regulated by the inducer. Repressible promoters are also known.

A “core promoter” contains nucleotide sequences essential for promoter function, including a TATA box and transcription initiation. By this definition, the core promoter may or may not have detectable activity in the absence of specific sequences that may enhance activity or confer tissue specific activity.

A “regulatory element” is a nucleotide sequence that regulates the activity of a core promoter.
For example, a regulatory element can comprise a nucleotide sequence that binds to a cellular factor that allows transcription exclusively or selectively in a particular cell, tissue or organelle. Typically, these types of regulatory elements are associated with genes that are expressed in a “cell-specific”, “tissue-specific” or “organelle-specific” manner.

An “enhancer” is a type of regulatory element that can increase the efficiency of transcription, regardless of the distance or orientation of the enhancer relative to the transcription start site.

“Heterologous DNA” refers to a DNA molecule or population of DNA molecules that does not naturally occur in a given host cell. A DNA molecule that is heterologous to a particular host cell is one whose host DNA is non-host D
As long as combined with NA (ie exogenous DNA), D derived from the host cell type
NA (ie endogenous DNA) may be included. For example, a host DN containing a transcription promoter
A DNA molecule comprising a non-host DNA segment that encodes a polypeptide operably linked to an A segment is considered to be a heterologous DNA molecule. Conversely, a heterologous DNA molecule can include an endogenous gene operably linked to an exogenous promoter. As another example, a DNA molecule comprising a gene derived from a wild type cell is considered to be heterologous DNA when the DNA molecule is introduced into a mutant cell that lacks the wild type gene.

A “polypeptide” is a multimer of amino acid residues, whether naturally or synthetically produced, joined together by peptide bonds. Polypeptides of less than about 10 amino acid residues are commonly referred to as “peptides”.

A “protein” is a macromolecule containing one or more polypeptide chains. Proteins can also contain non-peptide components such as carbohydrate groups. Carbohydrates and other non-peptide substituents can be added to the protein by the cell in which the protein is produced, and will vary depending on the cell type. A protein is defined herein in terms of its amino acid backbone structure. In general, substituents such as carbohydrate groups are not specified, but may still be present.

A peptide or polypeptide encoded by a non-host DNA molecule is a “heterologous” peptide or polypeptide.

A “cloning vector” is a nucleic acid molecule such as a plasmid, cosmid, or bacteriophage that has the ability to self-replicate in a host cell. Typically, a cloning vector is one or a few restriction endonuclease recognition sites that allows for the insertion of a nucleic acid molecule without loss of the vector's essential biological function, as well as cells transformed with the cloning vector. A nucleotide sequence encoding a marker gene suitable for use in identification and selection. Typically, marker genes include genes that confer tetracycline resistance or ampicillin resistance.

An “expression vector” is a nucleic acid molecule that encodes a gene that is expressed in a host cell. Typically, an expression vector includes a transcription promoter, a gene, and a transcription terminator. Normally, gene expression is placed under the control of a promoter, and such a gene is said to be “operably linked” to the promoter. Similarly, a regulatory element and a core promoter are operably linked when the regulatory element regulates the activity of the core promoter.

A “recombinant host” is a cell that contains a heterologous nucleic acid molecule, such as a cloning vector or expression vector. In the case of the present invention, an example of a recombinant host is a cell that produces IL-17RA from an expression vector. In contrast, IL-17RA is a “natural source” of IL-17RA and can be produced by cells lacking an expression vector.

An “integrated transformant” is a recombinant host cell in which heterologous DNA is integrated into the genomic DNA of the cell.

A “fusion protein” is a hybrid protein expressed by a nucleic acid molecule comprising the nucleotide sequence of at least two genes. For example, a fusion protein can include at least a portion of an IL-17RA polypeptide fused to a polypeptide that binds to an affinity matrix. Such fusion proteins provide a means to isolate large quantities of IL-17RA using affinity chromatography.

The term “receptor” refers to a cell-bound protein that binds to a bioactive molecule termed a “ligand”. This interaction mediates the action of the ligand on the cell. Receptors can be cytoplasmic or nuclear membrane bound; monomeric (eg thyroid stimulating hormone receptor, beta adrenergic receptor) or multimers (eg PDGF receptor, growth hormone receptor, IL-3 receptor,
GM-CSF receptor, G-CSF receptor, erythropoietin receptor and IL-6 receptor). Membrane-bound receptors are characterized by a multidomain structure that includes an extracellular ligand binding domain and an intracellular effector domain that is typically involved in signal transduction. In some membrane-bound receptors, the extracellular ligand binding domain and the intracellular effector domain are located in separate polypeptides that contain a fully functional receptor.

In general, binding of a ligand to a receptor results in a change in the conformation of the receptor that causes the effector domain to interact with other molecules within the cell, which in turn alters cellular metabolism. cause. Metabolic events often associated with receptor-ligand interactions include gene transcription, phosphorylation, dephosphorylation, increased cyclic AMP production, intracellular calcium mobilization, membrane lipid mobilization, cell adhesion, inositol lipid hydrolysis and Includes hydrolysis of phospholipids.

The term “secretory signal sequence” refers to a DNA sequence that encodes a peptide (“secretory peptide”) that, as a component of a larger polypeptide, moves the larger polypeptide through the secretory pathway of the cell in which it is synthesized. Show. As larger polypeptides move through the secretory pathway, they are generally cleaved to remove the secreted peptide.

An “isolated polypeptide” is a polypeptide that is essentially free of contaminating cellular components such as carbohydrates, lipids, or other protein impurities that are naturally associated with the polypeptide. Typically, an isolated polypeptide preparation is in a highly purified form, ie, at least about 80% purity, at least about 90% purity, at least about 95% purity, greater than 95% purity, eg, 96%, 97
% Or 98% or greater purity or greater than 99% purity polypeptide.
One way to show that a particular protein preparation contains an isolated polypeptide is to use a single band after sodium dodecyl sulfate (SDS) -polyacrylamide gel electrophoresis of the protein preparation and Coomassie Brilliant Blue staining of the gel. It is by appearance. However, the term “isolated” does not exclude the presence of the same polypeptide in another physical form, such as a dimer or glycosylated or derivatized form.

The terms “amino terminus” and “carboxyl terminus” are used herein to refer to positions within a polypeptide. Where the context allows, these terms are used in reference to a particular sequence or portion of a polypeptide to indicate proximity or relative position. For example, a particular sequence located within the polypeptide on the carboxyl terminus side of the reference sequence is located proximal to the carboxyl terminus of the reference sequence, but is not necessarily at the carboxyl terminus of the complete polypeptide.

The term “expression” refers to the biosynthesis of a gene product. For example, in the case of a structural gene, expression includes transcription of the structural gene into mRNA and translation of the mRNA into one or more polypeptides.

As used herein, the term “immunomodulator” includes cytokines, stem cell growth factors, lymphotoxins, costimulatory molecules, hematopoietic factors and the like and synthetic analogs of these molecules.

The term “complement / anti-complement pair” refers to non-identical moieties that form a non-covalently stable pair under appropriate conditions. For example, biotin and avidin (or streptavidin) are prototypical members of a complement / anti-complement pair. Other exemplary complement / anti-complement pairs include receptor / ligand pairs, antibody / antigen (or hapten or epitope) pairs, sense / antisense polynucleotide pairs, and the like. Where subsequent dissociation of the complement / anti-complement pair is desired, preferably the complement / anti-complement pair has a binding affinity of less than 10 ⁹ M ⁻¹ .

As used herein, a “therapeutic agent” is a molecule or atom that is conjugated to an antibody moiety to produce a therapeutically useful conjugate. Examples of therapeutic agents include drugs, toxins, immunomodulators, chelators, boron compounds, photoactive agents or dyes and radioisotopes.

A “detectable label” is a molecule or atom that can be conjugated to an antibody moiety to produce a molecule useful in diagnosis. Examples of detectable labels include chelating agents, photoactive agents, radioisotopes, fluorescent agents, paramagnetic ions or other marker moieties.

The term “affinity tag” is used herein to bind to a second polypeptide to provide for purification or detection of the second polypeptide or to provide a binding site for a substrate of the second polypeptide. Used to indicate a possible polypeptide segment.
In principle, any peptide or protein for which an antibody or other specific binding agent is available can be used as an affinity tag. Affinity tags are polyhistidine tract, protein A (Nilsson et al., EMBO J. 4: 1075 (1985); Nil
sson et al., Methods Enzymol. 198: 3 (1991)), glutathione S transferase (Smith and Johnson, Gene 67:31 (1).
988)), Glu-Glu affinity tags (Grussenmeyer et al., Pro
c. Natl. Acad. Sci. USA 82: 7952 (1985)), substance P, FLAG peptide (Hopp et al., Biotechnology 6: 1204 (1).
988)), including streptavidin-binding peptides or other antigenic epitopes or binding domains. Ford et al., Protein Expression and Pur
See generally, 2:95 (1991). DNA molecules encoding affinity tags are available from commercial suppliers (eg, Pharmacia).
Biotech, Piscataway, NJ).

A “target polypeptide” or “target peptide” is an amino acid sequence that contains at least one epitope and is expressed on a target cell, such as a tumor cell or a cell carrying an infectious agent antigen. T cells recognize the target polypeptide or peptide epitope presented by the major histocompatibility complex molecule to the target peptide and usually lyse the target cell or recruit other immune cells to the target cell site. This kills the target cell.

In eukaryotes, RNA polymerase II catalyzes the transcription of structural genes to produce mRNA. The nucleic acid molecule can be designed to include an RNA polymerase II template, where the RNA transcript has a sequence that is complementary to the sequence of a particular mRNA. RNA transcripts are "antisense R
The nucleic acid molecule referred to as “NA” and encoding antisense RNA is “antisense gene”.
It is called. Antisense RNA molecules can bind to mRNA molecules and mRNA
Inhibits translation.

"An antisense oligonucleotide specific for IL-17A or IL-17F"
(A) can form a stable triplex with a portion of the IL-17A or IL-17F gene, or (b) a stable duplex with a portion of the mRNA transcript of the IL-17A or IL-17F gene. An oligonucleotide having a sequence that can be formed.

A “ribozyme” is a nucleic acid molecule that contains a catalytic center. The term includes RNA enzymes, self-splicing RNAs, self-cleaving RNAs and nucleic acid molecules that perform these catalytic functions. A nucleic acid molecule encoding a ribozyme is referred to as a “ribozyme gene”.

An “external guide sequence” is a nucleic acid molecule that directs RNase P, an endogenous ribozyme, to a specific species of intracellular mRNA, resulting in cleavage of the mRNA by RNase P. A nucleic acid molecule encoding an external guide sequence is referred to as an “external guide sequence gene”.

The term “allelic variant” is used herein to denote any two or more alternative forms of a gene occupying the same chromosomal locus. Allelic variation occurs naturally through mutation and can result in phenotypic polymorphism within a population. A genetic mutation can be silent (no change in the encoded polypeptide) or can encode a polypeptide having an altered amino acid sequence. The term allelic variant is also used herein to indicate a protein encoded by an allelic variant of a gene.

The term “ortholog” refers to a polypeptide or protein obtained from one species that is the functional counterpart of a heterologous polypeptide or protein. Sequence differences between orthologs are the result of speciation.

A “paralog” is an apparently different but structurally related protein made by an organism. Paralogs are thought to arise from gene duplication. For example, α-globin, β
-Globin and myoglobin are paralogs of each other.

Due to the inaccuracies of standard analytical methods, the molecular weight and molecular length of macromolecules are understood to be approximate values. When such a numerical value is expressed as “about” X or “approximately” X, the displayed numerical value of X is ±
It is understood that the accuracy is 10%.

(C) Antibody that binds to IL-17A and IL-17F)
The antibodies of the present invention specifically bind IL-17A and IL 17F. In some embodiments, the antibodies of the invention specifically bind to monomeric forms of IL-17A and IL-17F.
In some embodiments, the antibodies of the invention bind to homodimeric IL-17A or IL-17F. In still other embodiments, the antibodies of the present invention comprise multimeric IL-17A and IL-
It specifically binds to 17F (eg, heterodimeric form). Preferred antibodies of the present invention are IL-
Blocks the biological activity of 17A and IL-17F.

Preferred antibodies and antibodies suitable for use in the methods of the invention include, for example, fully human antibodies,
Human antibody homologue, humanized antibody homologue, chimeric antibody homologue, Fab, Fab ′, F (ab ′
) ₂ and F (v) antibody fragments, single chain antibodies and monomers or dimers of antibody heavy or light chains or mixtures thereof. Preferably, the antibody of the present invention is a monoclonal antibody.

The antibodies of the present invention may comprise intact immunoglobulins of any isotype including IgA, IgG, IgE, IgD, IgM types (and their subtypes). The antibody preferably comprises intact IgG, more preferably IgG1. The light chain of the immunoglobulin may be kappa or lambda. Preferably, the light chain is kappa.

The antibody of the present invention comprises a portion of an intact antibody that retains antigen-binding specificity, such as a Fab fragment, F
from ab ′ fragments, F (ab ′) ₂ fragments, F (v) fragments, heavy chain monomers or dimers, light chain monomers or dimers, one heavy chain and one light chain Including dimers. Accordingly, antigen-binding fragments and full-length dimer or trimer polypeptides derived from the antibodies described above are useful per se.

Direct use of a rodent monoclonal antibody (MAb) as a human therapeutic results in a human anti-rodent antibody (“HARA”) (eg, human anti-mouse antibody (“HAMA”)) response, which is Occurs in a significant number of patients treated with animal-derived antibodies (Kha
zaeli et al. (1994) Immunother. 15: 42-52). A chimeric antibody containing fewer mouse amino acid sequences would avoid the problem of inducing an immune response in humans.

Improvements in antibodies to avoid problems with HARA responses have led to the development of “humanized antibodies”. Humanized antibodies are produced by recombinant DNA technology, wherein at least one amino acid of a human immunoglobulin light or heavy chain that is not required for antigen binding is derived from a non-human mammalian immunoglobulin light or heavy chain. Substituted for the corresponding amino acid. For example, if the immunoglobulin is a mouse monoclonal antibody, at least one amino acid that is not required for antigen binding is substituted with an amino acid present in the corresponding human antibody at that position. Without wishing to be bound by a particular theory of operation, “humanization” of monoclonal antibodies is thought to suppress human immunological reactivity to foreign immunoglobulin molecules.

As a non-limiting example, a method for performing complementarity determining region (CDR) grafting is performed using a target antigen (eg, I
Sequencing the mouse heavy and light chains of the antibody of interest that bind to L-17A and IL-17F),
This can be done by engineering the CDR DNA sequences and conferring these amino acid sequences to the corresponding human V regions by site-directed mutagenesis. A human constant region gene segment of the desired isotype is added and the “humanized” heavy and light chain genes are co-expressed in mammalian cells to produce soluble humanized antibodies. A typical expression cell is a Chinese hamster ovary (CHO) cell. Suitable methods for making chimeric antibodies are described, for example, in Jones et al. (1986) Nature 321: 522-525; Riechmann (1988).
Nature 332: 323-327; Queen et al. (1989) Proc. Nat.
Acad. Sci. USA 86: 10029; and Orlandoi et al. (1989) P.
roc. Natl. Acad. Sci. USA 86: 3833.

Queen et al. (1989) Proc. Nat. Acad. Sci. USA 86:10
029-10033 and WO90 / 07861 describe the preparation of humanized antibodies. Human and mouse variable framework regions were chosen for optimal protein sequence homology. The tertiary structure of the mouse variable region was computer modeled and superimposed on a homologous human framework to show optimal interaction of amino acid residues with mouse CDRs. This led to the development of antibodies with improved binding affinity for the antigen (usually it decreases as the CDR-grafted chimeric antibody is made). Other techniques for making humanized antibodies are known in the art, such as Tempest (1991) Biotechnology.
9: 266-271.

The antibody of the present invention can be used alone or as an immune complex with a cytotoxic drug.
In some embodiments, the drug is a chemotherapeutic agent. In some embodiments, the drug is lead-
212, bismuth-212, astatine-211, iodo-131, scandium-47
, Radioisotopes including, but not limited to, fissile nuclides such as rhenium-186, rhenium-188, yttrium-90, iodo-123, iodo-125, bromine-77, indium-111 and boron-10 or actinide. It is. In other embodiments, the drug is a toxin or cytotoxic drug including but not limited to ricin, modified Pseudomonas enterotoxin A, calicheamicin, adriamycin, 5-fluorouracil, and the like. Methods for conjugation of antibodies and antibody fragments to such drugs are known in the literature.

The antibodies of the present invention include, for example, derivatives that are modified by covalent attachment of any type of molecule to the antibody such that the covalent attachment does not prevent the antibody from binding to its epitope.
Examples of suitable derivatives include fucosylated antibodies and fragments, glycosylated antibodies and fragments, acetylated antibodies and fragments, PEGylated antibodies and fragments, phosphorylated antibodies and fragments, and amidated antibodies and fragments. It is not limited. The antibodies of the present invention and their derivatives themselves can be derivatized by known protecting / blocking groups, protein cleavage, binding to cellular ligands or other proteins, and the like. In some embodiments of the invention, at least one heavy chain of the antibody is fucosylated. In some embodiments, the fucosylation is N-linked. In some preferred embodiments, at least one heavy chain of the antibody comprises a fucosylated N-linked sugar chain.

The antibodies of the present invention inhibit the biological properties of the antibodies of the present invention (eg, block the binding of IL-17A and / or IL-17F to their respective receptors, the biological activity of IL-17A and IL-17F) And variants having single or multiple amino acid substitutions, deletions, additions or alternatives that retain binding affinity). Those skilled in the art will be able to use single or multiple amino acid substitutions, deletions,
Variants with additions or alternatives can be generated. These mutants are in particular (a
) A variant in which one or more amino acid residues are replaced by conserved or non-conserved amino acids, (b) 1
A variant in which one or more amino acids have been added to or deleted from the polypeptide, (c
A) a variant in which one or more amino acids contain a substituent and (d) a fusion partner in which the polypeptide can confer useful properties to the polypeptide, such as, for example, an epitope for an antibody, a polyhistidine sequence, a biotin moiety, etc. May include variants fused to another peptide or polypeptide, such as a protein label or other chemical moiety. The antibodies of the invention can include variants in which amino acid residues from one species are substituted in place of the corresponding residues in another species at conserved or non-conserved positions. In another embodiment, amino acid residues at non-conserved positions are replaced with conserved or non-conserved residues. Techniques for obtaining these variants are known to those skilled in the art, including genetic (repression, deletion, mutation), chemical and enzymatic techniques. The antibodies of the present invention also include antibody fragments. “Fragments” are preferably at least about 40, more preferably at least about 50, more preferably at least about 60, more preferably at least about 70, more preferably at least about 80, more preferably at least about 90, more preferably Is at least about 100 amino acids long and prevents any biological or immunological activity of the full-length sequence, eg, binding of IL-17A and / or IL-17F to the respective receptor, IL-17A And the polypeptide sequence that retains the ability to block the biological activity of IL-17F, binding affinity.

The invention also encompasses fully human antibodies such as those derived from peripheral blood mononuclear cells of patients with ovary, breast, kidney, colorectal, lung, endometrium or brain cancer. Such cells can be fused with myeloma cells, for example, to form hybridoma cells that produce fully human antibodies to IL-17A and IL-17F.

  The invention also encompasses bispecific antibodies that bind to IL-17A and IL-17F.

The antibodies of the present invention are preferably non-toxic as shown, for example, in in vivo toxicity studies.

The antibodies and derivatives thereof of the present invention have binding affinity that includes a dissociation constant (K _d ) of less than 1 × 10 ⁻² . In some embodiments, K _d is less than 1 × 10 ⁻³ . In other embodiments, the K _d is less than 1 × 10 ⁻⁴ . In some embodiments, K _d is less than 1 × 10 ⁻⁵ . In still other embodiments, the K _d is less than 1 × 10 ⁻⁶ . In another embodiment, K _d is 1
× 10 ^{−7 or} less. In other embodiments, the K _d is less than 1 × 10 ⁻⁸ . In other embodiments, the K _d is less than 1 × 10 ⁻⁹ . In other embodiments, the K _d is less than 1 × 10 ⁻¹⁰ . In still other embodiments, the K _d is less than 1 × 10 ⁻¹¹ . In some embodiments, K _d is less than 1 × 10 ⁻¹² . In other embodiments, the K _d is less than 1 × 10 ⁻¹³ . In other embodiments, the K _d is less than 1 × 10 ⁻¹⁴ . In still other embodiments, the K _d
Is less than 1 × 10 ⁻¹⁵ .

(D) Nucleic acid)
The present invention also includes nucleic acids encoding the heavy and / or light chains of the antibodies of the present invention. The nucleic acids of the invention comprise at least 80%, more preferably at least about 90%, more preferably at least about 95%, most preferably at least about 98% of nucleic acids having homology with the nucleic acids of the invention. When referring to a particular sequence, the terms “percent similarity”, “percent identity” and “percent homology” refer to the University of Wiscons.
Used as shown in the GCG software program. The nucleic acids of the present invention also include complementary nucleic acids. In some examples, when aligned, the sequences are completely complementary (no mismatches). In other examples, there can be up to about 20% mismatch in the sequence. In some embodiments of the invention, nucleic acids encoding the heavy and light chains of the antibodies of the invention are provided.

The nucleic acid of the present invention can be a plasmid, cosmid, bacmid, phage, artificial chromosome (BAC,
YAC) or a virus-like vector that can be cloned into another gene sequence or element (D
NA or RNA) can be inserted. In some embodiments, the expression vector is a constitutively active promoter segment (eg, but not limited to CMV, SV40, elongation factor or LTR sequence) or a steroid-inducible pIND vector (Invitrogen).
Inducible promoter sequences such as can be used to regulate the expression of the nucleic acid. The expression vector of the present invention may further comprise a regulatory sequence, such as an internal ribosome entry site. The expression vector is
For example, it can be introduced into cells by transfection.

(E) Method for generating antibodies against IL-17A and IL-17F)
The present invention also provides methods for generating monoclonal antibodies that specifically bind to IL-17A and IL-17F. The antibodies of the invention can be generated in vivo or in vitro.
One strategy for generating antibodies against IL-17A and IL-17F involves immunizing animals with IL-17A and IL-17F. In some embodiments, the animal is immunized with monomeric or multimeric forms of FR IL-17A and IL-17F. Animals so immunized produce antibodies to IL-17A and IL-17F and cross-reactive antibodies to IL-17A and IL-17F. Hybridoma method (Kohler
And Milstein, (1975) Nature 256: 495-497); the trioma method; the human B cell hybridoma method (Kozbor et al. (1983) I.
mmunol. Today 4:72) and the EBV hybridoma method for generating human monoclonal antibodies (Cole et al., MONOCLONAL ANTI).
BODIES AND CANCER THERAPY, Alan R. Liss, In
c. 1985, pp. 77-96), standard methods for producing monoclonal antibodies are known, including but not limited to.

IL-17A and IL-17F can be purified from cells or recombinant systems using a variety of well-known techniques for isolating and purifying proteins. For example, but not to limit, IL
-17A and IL-17F can be isolated based on the apparent molecular weight of the protein by running the protein on an SDS-PAGE gel and blotting the protein onto a membrane. after that,
An appropriately sized band corresponding to any protein can be cleaved from the membrane and used as an immunogen in an animal either directly or by first extracting or eluting the protein from the membrane. As an alternative, proteins can be isolated by size exclusion chromatography alone or in combination with other isolation and purification means.

The present invention relates to homodimer, heterodimer and / or multimeric forms of IL-17A and I
Also provided are methods of generating monoclonal antibodies that specifically bind to L-17F. These different forms can be purified from cells or recombinant systems using various well-known techniques for isolating and purifying proteins. For example, but not by way of limitation, IL-17A and IL-1
7F can be isolated based on the apparent molecular weight of the protein by running the protein on an SDS-PAGE gel and blotting the protein onto a membrane. Subsequently, appropriately sized bands corresponding to each can be cleaved from the membrane directly or by first extracting or eluting the protein from the membrane and used as an immunogen in an animal. As an alternative, proteins can be isolated by size exclusion chromatography alone or in combination with other isolation and purification means.

Other purification means are Zola, Monoclonal Antibodies: Prep.
aration And Use Of Monoclonal Antibodies
And Engineered Antibody Derivatives (Bas
ics: From Background To Bench) Springer-Ve
rlag Ltd. , New York, 2000; Basic Methods In
Antibody Production And Characterizatio
n, Chapter 11, “Antibody Purification Methods”, H
oward and Bethell (eds.), CRC Press, 2000; Antib
ody Engineering (Springer Lab Manual), Ko
ntermann and Dubel (eds.), Springer-Verlag, 200
Obtained with a standard reference text such as 1.

For in vivo antibody production, animals are generally immunized with IL-17A or IL-17F or any immunogenic portion (eg, a shared epitope described above). In general, the antigen is combined with an adjuvant that promotes immunogenicity. Adjuvants vary according to the species used for immunization. Examples of adjuvants include Freund's complete adjuvant ("F
CA "), Freund's incomplete adjuvant (" FIA "), mineral gels (e.g.,
Aluminum hydroxide), surfactants (eg, lysolecithin, pluronic polyol, polyanion), peptides, oil emulsions, keyhole limpet hemocyanin ("KLH")
), Dinitrophenol (“DNP”) and potentially useful human adjuvants such as, but not limited to, Bacillus Calmette-Guerin (“BCG”) and Corynebacterium parvum. Such adjuvants are also known in the art. Immunization is accomplished using well-known procedures. The dose and immunization regimen will depend on the mammalian species to be immunized, its immunity, weight and / or calculated surface area, and the like. Usually, serum is sampled from the immunized animal and assayed for anti-IL-17A and IL-17F antibodies using, for example, appropriate screening assays as described below.

A common method for generating humanized antibodies is to graft a CDR sequence from MAb (generated by immunizing a rodent host) into the human Ig backbone and transfer the chimeric gene to Chinese hamster ovary (CHO) cells. Transfects and then produces a functional Ab that is secreted by CHO cells (Shields, RL et al. (1995) Anti
-IgE monoantibodies that inhibit
allergen-specific histamine release. Int
Arch. Allergy Immunol. 107: 412-413). The methods described within this application are also useful for generating genetic changes in Ig genes or chimeric Ig transfected into host cells such as rodent cell lines, plants, yeast and prokaryotes. (Frigerio L et al. (2000) Assembly, secretio
n, and vacuum delivery of a hybrid imu
noglobulin in plants. Plant Physiol. 123: 1
483-1494).

Spleen cells from immunized animals can be immortalized by fusing spleen cells (including antibody producing B cells) with immortal cell lines such as myeloma lines. Usually, the myeloma cell line is derived from the same species as the splenocyte donor. In one embodiment, the immortal cell line is sensitive to media containing hypoxanthine, aminopterin and thymidine (“HAT media”). In some embodiments, the myeloma cell is negative for Epstein-Barr virus (EVB) infection.
In preferred embodiments, the myeloma cells are HAT sensitive, EVB negative and Ig expression negative. Any suitable myeloma can be used. Mouse hybridomas can be generated using mouse myeloma cell lines (eg, P3-NS1 / 1-Ag4-1, P3-x63-Ag8.
653 or Sp2 / O-Ag14 myeloma line). These myeloma lines are available from the ATCC. These myeloma cells are the donor splenocyte polyethylene glycol (“PEG”)
, Preferably fused to 1500 molecular weight polyethylene glycol (“PEG 1500”). Hybridoma cells resulting from the fusion are selected in HAT medium that kills unfused and non-productive fused myeloma cells. Unfused splenocytes die in a short period of time in culture. In some embodiments, the myeloma cell does not express an immunoglobulin gene.

Hybridomas producing the desired antibody, detected by screening assays as described below, can be used to produce antibodies in culture or in animals. For example, the hybridoma cells can be cultured in a nutrient medium under conditions and for a time sufficient to allow the hybridoma cells to secrete monoclonal antibodies into the medium. These techniques and media are well known to those skilled in the art. Alternatively, the hybridoma cells can be injected into the peritoneum of an unimmunized animal. The cells grow in the peritoneal cavity and secrete antibodies that accumulate as ascites.
Ascites can be withdrawn from the abdominal cavity using a syringe as a rich source of monoclonal antibodies.

Hybridomas expressing monoclonal antibodies against IL-17A and IL-17F have been generated using methods similar to those described above and are subject to Americana under the Budapest Convention.
n Type Tissue Culture Collection (ATCC; Ma
nassas VA) deposited as an original deposit with the Patent Depositary and was given the following ATCC accession number: clone 339.15.5.3 (ATCC Patent Deposit Name PTA-)
7987, deposited on November 7, 2006); clone 339.15.3.6 (ATCC patent deposit name PTA-7988, deposited on November 7, 2006); and clone 339
. 15.6.16 (ATCC Patent Deposit Name PTA-7789, deposited on November 7, 2006)

Another non-limiting method for generating human antibodies is described in US Pat. No. 5,789,650, which includes another species in which its own endogenous immunoglobulin gene has been inactivated (eg, A transgenic mammal producing human) antibodies is described. The gene for the heterologous antibody is encoded by a human immunoglobulin gene. A transgene containing a non-rearranged immunoglobulin coding region is introduced into a non-human animal. The resulting transgenic animals can functionally rearrange the transgenic immunoglobulin sequences and produce antibody repertoires of various isotypes encoded by human immunoglobulin genes.
B cells from transgenic animals are then immortalized cell lines (eg, myeloma cells)
It is immortalized by any of a variety of methods including fusion with.

The antibodies of the present invention may be prepared in vitro using various techniques known in the art. For example, but not intended to be limiting, IL-17A and IL-17F
Fully human monoclonal antibodies against can be prepared using human splenocytes pre-stimulated in vitro (Boerner et al. (1991) J. Immunol. 147: 86-).
95).

Alternatively, for example, antibodies of the invention can be prepared by “repertoire cloning” (Persson et al. (1991) Proc. Nat. Acad. Sci. USA 8
8: 2432-2436; and Huang and Stollar (1991) J. MoI. I
mmunol. Methods 141: 227-236). Further, US Pat. No. 5,7
No. 98,230 describes the preparation of human monoclonal antibodies derived from human B antibody-producing B cells that are immortalized by infection with Epstein-Barr virus expressing Epstein-Barr virus nuclear antigen 2 (EBNA2). Next, EBNA2 required for immortalization is inactivated, resulting in an increase in antibody titer.

In another embodiment, the antibodies of the invention are formed by in vitro immunization of peripheral blood mononuclear cells (“PBMC”). This can be accomplished using any means known in the art, such as the methods described in the literature (Zafiropoulos et al. (1997).
) J. et al. Immunological Methods 200: 181-190).

In a specific embodiment, bispecific and single chain antibodies that bind to IL-17A and IL-17F are generated. One method of the present invention is a method for generating bispecific A / F antibodies. The method fuses hybridoma cells that secrete monoclonal antibodies that bind to IL-17A with hybridoma cells that secrete monoclonal antibodies that bind to IL-17F, thereby secreting bispecific A / F monoclonal antibodies. Preparing a hybrid hybridoma. In one embodiment, the method comprises fusing a hybridoma cell that secretes an antagonist (or agonist) IL-17A MAb with a hybridoma cell that secretes an antagonist (or agonist) IL-17F MAb. Conventional techniques for performing such fusion and isolating the desired hybrid hybridoma include those described elsewhere in this specification and the techniques exemplified in the examples below.

In US Pat. No. 6,060,285, at least light chain and heavy chain variable region genes of an antibody having a first specificity are transfected into a hybridoma cell that secretes an antibody having a second specificity. Discloses a process for the production of bispecific antibodies. When the transfected hybridoma cells are cultured, bispecific antibodies are produced and can be isolated by various means known in the art.

Other researchers have used chemical conjugation of antibody fragments to prepare antigen-binding molecules with specificities for two different antigens (Brennan et al., Science 229:
81 1985; Glennie et al., J. MoI. Immunol. 139: 2367, 1987
). In US Pat. No. 6,010,902, for example, GMBS (maleimidobutryloxy succinimide)
ide)) or SPDP (N-succinimidyl 3- (2-pyridyldithio) propionate), a technique known in the art that can prepare bispecific antibodies by the use of heterobifunctional cross-linking reagents. (Eg Hardy, “
Purification And Coupling Of Fluorescent
Proteins For Use In Flow Cytometry ", Han
dbbook of Experimental Immunology, 4th edition, volume 1, Immunochemistry, Weir et al. (ed.), 31.4-31.12, 19
86).

The ability to generate antibodies by recombinant DNA technology facilitates the generation of bispecific antibodies. Kostelny et al. Generated leucine zippers from fos and jun proteins (which selectively form heterodimers) to generate bispecific antibodies that can bind to the cell surface molecule CD3 and the interleukin-2 receptor. Part (J. Immunol
. 148: 1547; 1992).

Single chain antibodies can be formed by joining heavy and light chain variable region (Fv region) fragments via an amino acid bridge (short peptide linker), resulting in a single polypeptide chain. Such single chain Fv (scFv) is composed of two variable region polypeptides (V _L and V _H ).
It is prepared by fusing a DNA encoding a peptide linker between DNAs encoding. The resulting antibody fragment depends on factors such as the length of the flexible linker between the two variable domains, and can form dimers or larger oligomers (Kortt et al., Protein Engineering 10: 423). , 1997)
. In certain embodiments, two or more scFvs are combined by use of a chemical crosslinker.

Techniques developed for the production of single chain antibodies can be adapted to produce single chain antibodies of the invention that bind IL-17A and IL-17F. Such techniques include US Patent No. 4
946,778; Bird (Science 242: 423, 1988); Hus
ton et al. (Proc. Natl. Acad. Sci. USA 85: 5879, 1988).
); And Ward et al. (Nature 334: 544, 1989). Once the desired single chain antibody has been identified (eg, from a phage display library), one skilled in the art can further manipulate the DNA encoding the single chain antibody to include a bispecific antibody comprising a bispecific antibody having an Fc region. Antibodies can be generated.

Single chain antibodies against IL-17A and IL-17F can be chained in either order (ie, anti-IL-17A-anti-IL-17F or anti-IL-17F-anti-IL-17).
A). In certain embodiments, the starting material for preparing bispecific A / F antibodies is IL-
It includes antagonist (or agonist) single chain antibodies to 17A and antagonist (or agonist) single chain antibodies to IL-17F.

US Pat. No. 5,582,996 discloses complementary bi-directional domains (eg, leucine zipper moieties or other key / keyhole bi-directional) to facilitate heterodimer formation in the generation of bispecific antibodies. Sex domain structure) is disclosed. The complementary bidirectional domain is F
It can be inserted between the ab fragment and another part of the heavy chain (ie the C _H 1 or C _H 2 region of the heavy chain). The use of two different Fab fragments and complementary bidirectional domains that selectively heterodimerize yields bispecific antibody molecules. Cysteine residues can be introduced into the complementary bidirectional domains to allow disulfide bonds between the complementary bidirectional domains and to stabilize the resulting bispecific antibody.

As described in US Pat. No. 5,959,083, a tetravalent bispecific molecule is a _second F (ab) of DNA encoding the heavy chain of an F (ab ′) ₂ fragment of an antibody. ') ₂ molecules (CH
One domain can be prepared by fusion with DNA encoding the heavy chain of the CH3 domain) or DNA encoding the single chain Fv fragment of the antibody. The resulting fusion gene expression in mammalian cells, along with the corresponding light chain gene, yields a tetravalent bispecific molecule with specificity for the selected antigen.

Bispecific antibodies can also be generated as described in US Pat. No. 5,807,706 (incorporated herein by reference). In general, the method includes introducing a protrusion in the first polypeptide and a corresponding cavity in the second polypeptide, ie, the polypeptide interface. The protrusions and cavities are arranged to promote heteromultimer formation and prevent homomultimer formation. The protrusion is generated by replacing an amino acid having a small side chain with an amino acid having a larger side chain. The cavity is created in the reverse manner, ie, replacing amino acids having relatively large side chains with amino acids having smaller side chains.

Protrusions and cavities can be generated by conventional methods of making amino acid substitutions in a polypeptide. For example, a nucleic acid encoding a polypeptide can be modified by conventional in vitro mutagenesis methods. Alternatively, polypeptides that incorporate the desired amino acid substitutions can be prepared by peptide synthesis. The amino acid selected for substitution is located at the interface between the first and second polypeptides.

(F) Antibody specificity screening)
Screening for antibodies that specifically bind to IL-17A and IL-17F can be accomplished using an enzyme linked immunosorbent assay (ELISA) in which microtiter plates are coated with IL-17A and IL-17F. In some embodiments, antibodies that bind to IL-17A and IL-17F from positive reacting clones are coated with other forms of IL-17A and IL-17F or other IL-17 family members. It can be further screened for reactivity in an ELISA-based assay using microtiter plates. Clones that produce antibodies that respond to another form or family member are removed, and clones that produce antibodies that respond to IL-17A and IL-17F
It can be selected for further growth and expression. Confirmation of the reactivity of antibodies to IL-17A and IL-17F includes, for example, proteins from ovary, breast, kidney, colorectal, lung, endometrial or brain cancer cells and purified FR-α and other folate receptors. The isoform is SD
It can be accomplished using a Western blot assay that is run on an S-PAGE gel and then blotted onto a membrane. The membrane can then be probed with a putative anti-FR-α antibody. Reactivity with IL-17A and IL-17F, but not another family member, is IL-17
Supports the specificity of reactivity to A and IL-17F.

In some embodiments, the binding affinity of an antibody of the invention is quantified. Antibodies of the present invention is preferably at least about 1 × ^{10 -7} M, more preferably at least about 1 × ^{10 -8} M, more preferably at least about 1 × ^{10 -9} M, and most preferably at least about 1 × 10 ^{- 10} M
Have the binding affinity of IL-17A and IL-17F. Preferred antibody producing cells of the invention are at least about 1 × 10 ⁻⁷ M, more preferably at least about 1 × 10 ⁻⁸ M, more preferably at least about 1 × 10 ⁻⁹ M, and most preferably at least about 1 × 10 ×. ^-10 M
Substantially produces only antibodies having the binding affinity of IL-17A and IL-17F.
Preferred compositions of the present invention, at least about 1 × ^{10 -7} M, more preferably at least about 1 × ^{10 -8} M, more preferably at least about 1 × ^{10 -9} M, and most preferably at least about 1 × 10 ^- Substantially only antibodies having a binding affinity of ¹⁰ M IL-17A and IL-17F.

Preferably, the antibodies of the invention induce antibody dependent cytotoxicity (ADCC) in IL-17RA and IL-17RC bearing cells. ADCC assays are known in the art.

(G) Anti-IL-17A and IL-17F antibody-producing cells)
The antibody-producing cells of the present invention may be any known insect-expressing cell line, such as Spod (Spod
opter frugiperda) cells. Expression cell lines are yeast cell lines such as Saccharomyces cerevisiae and fission yeast (S
(chizosaccharomyces pombe) cells. Expression cells are mammalian cells such as hybridoma cells (eg NS0 cells), Chinese hamster ovary cells, baby hamster kidney cells, human fetal kidney system 293, normal canine kidney cell system, normal cat kidney cell system, monkey kidney Cells, African green monkey kidney cells, COS cells and non-tumorigenic mouse myoblast G8 cells, fibroblast cell lines, myeloma cell lines, mouse NIH / 3T3 cells, LM
TK31 cells, mouse Sertoli cells, human cervical cancer cells, buffer rotat hepatocytes,
Human lung cells, human hepatocytes, mouse breast cancer cells, TRI cells, MRC5 cells and FS4 cells may be used.

In some preferred embodiments, the antibody-producing cells of the invention are IL-17A and IL-17.
Antibodies that specifically bind to F are produced. Preferably, the cells are IL-17A and IL-
It is substantially free of 17F binding competitor. In a preferred embodiment, the antibody producing cell is about 10
Less than wt%, preferably less than about 5 wt%, more preferably less than about 1 wt%, more preferably less than about 0.5 wt%, more preferably less than about 0.1 wt%, most preferably 0 wt%. Includes IL-17A and IL-17F binding competitors. In some preferred embodiments, the antibody produced by the antibody producing cell is substantially free of IL-17A and IL-17F competitors. In a preferred embodiment, the antibody produced by the antibody producing cell is less than about 10% by weight, preferably less than about 5% by weight, more preferably less than about 1% by weight, more preferably less than about 0.5% by weight, more Preferably less than about 0.1 wt%, most preferably 0 wt% IL
Includes -17A and IL-17F binding competitors. Preferred antibody producing cells of the invention are at least about 1 × 10 ⁻⁷ M, more preferably at least about 1 × 10 ⁻⁸ M, more preferably at least about 1 × 10 ⁻⁹ M, and most preferably at least about 1 × 10 ×. ⁻¹⁰ M IL-1
Only antibodies with binding affinity of 7A and IL-17F are substantially produced.

In some embodiments, the antibody-producing cell is an American under the Budabest treaty.
Type Tissue Culture Collection (ATCC; Man
Assas VA) Deposited as an original deposit with the Patent Depositary and the following ATCC accession number: Clone 339.15.5.3 (ATCC Patent Deposit Name PTA-7987,20)
Clone 339.15.3.6 (ATCC Patent Deposit Name P)
TA-7988, deposited on 7 November 2006); and clone 339.15.6.1
No. 6 (ATCC Patent Deposit Name PTA-7789, deposited on Nov. 7, 2006) is a hybridoma expressing a monoclonal antibody against IL-17A and IL-17F.

(H) Antibody purification)
Antibody purification methods are known in the art. In some embodiments of the invention, antibody purification methods include filtration, affinity column chromatography, cation exchange chromatography, anion exchange chromatography and concentration. Preferably, the filtration step comprises ultrafiltration, more preferably ultrafiltration and diafiltration. Filtration is
Preferably at least about 5-50 times, more preferably 10-30 times, most preferably 14
~ 27 times. Affinity column chromatography is, for example, PROSEP
Affinity chromatography (Millipore, Billerica, Mas
s. ) Can be used. In a preferred embodiment, the affinity chromatography step comprises PROSEP-VA column chromatography. The eluate can be washed with a washing solvent. Cation exchange chromatography can include, for example, SP-Sepharose cation exchange chromatography. Anion exchange chromatography can include, for example, without limitation, Q-Sepharose fast anion exchange. The anion exchange step is preferably non-binding, thereby allowing removal of contaminants including DNA and BSA. Preferably, the antibody product is nanofiltered using, for example, a Pall DV 20 nanofilter. The antibody product can be concentrated using, for example, ultrafiltration and diafiltration. The method may further comprise a size exclusion chromatography step to remove aggregates.

(I) Therapeutic use of cross-reactive IL-17A and IL-17F antibodies)
Antibodies cross-reactive with IL-17A and IL-17F are IL-17A and I-17
Binds to L-17F (alone or together), thus binding of IL-17A to IL-17RA or IL-17RC and binding of IL-17F to IL-17RC or any other receptor to which they can bind It can be used to regulate the immune system by blocking binding to the body, particularly IL-17 family members. The antibody of the present invention is also IL-17A.
Binding to endogenous IL-17RA and / or IL-17RC receptors and IL-1
It can be used to modulate the immune system by inhibiting the binding of 7F to the endogenous IL-17RC receptor. The antibodies of the invention can also be used to treat patients that produce excess IL-17A and / or IL-17F. Suitable patients include mammals such as humans. For example, the antibodies of the present invention may be used to treat inflammation and inflammatory diseases such as psoriasis, psoriatic arthritis, rheumatoid arthritis, endotoxemia, inflammatory bowel disease (IBD), IBS, colitis, asthma, allograft rejection, In the treatment of immune-mediated renal disease, hepatobiliary disease, multiple sclerosis, atherosclerosis, promotion of tumor growth or degenerative joint disease and other inflammatory conditions disclosed herein,
Useful for binding, blocking, inhibiting, reducing, antagonizing or neutralizing IL-17A and IL-17F (alone or together).

Within the preferred embodiments, the antibodies of the invention are expressed in vivo with IL-17A and I-17.
It binds to L-17F (individually or together) and prevents, inhibits, reduces, antagonizes, or neutralizes it.

Accordingly, certain embodiments of the present invention may provide inflammatory / immune diseases or conditions such as psoriasis, psoriatic arthritis, atopic dermatitis, inflammatory skin conditions, rheumatoid arthritis, inflammatory bowel disease (I
BD), Crohn's disease, diverticulosis, asthma, pancreatitis, type I diabetes (IDDM), pancreatic cancer, pancreatitis, Graves' disease, colon / intestinal cancer, autoimmune disease, sepsis, organ or bone marrow transplantation; endotoxemia, trauma, Inflammation caused by surgery or infection; amyloidosis; splenomegaly; graft versus host disease; and suppression of inflammation, immunosuppression, hematopoiesis, immunity, inflammation or proliferation of lymphoid cells, macrophages, T cells (including Th1 and Th2) It relates to the use of the antibodies of the invention as antagonists in the case of reduction, suppression of immune responses to pathogens or antigens or in other cases where inhibition of IL-17F, IL-17A cytokines is desired.

  Furthermore, the antibodies of the present invention are useful for:

(1) Acute inflammation, trauma, tissue damage, surgery, inflammation as a result of sepsis or infection and chronic inflammatory diseases such as asthma, inflammatory bowel disease (IBD), IBS, chronic colitis, splenomegaly, rheumatoid arthritis, IL-17A and IL-17F in the treatment of recurrent acute inflammatory episodes (eg tuberculosis) and other diseases associated with amyloidosis and atherosclerosis, Castleman's disease, asthma and induction of acute phase responses Block, inhibit, reduce, antagonize or neutralize signal transduction via.

(2) To prevent or inhibit signaling in immune cells (eg, lymphocytes, monocytes, leukocytes) via receptors (eg, IL-17RA and IL-17RC), ID
Signaling via IL-17A or IL-17F in the treatment of autoimmune diseases such as DM, multiple sclerosis (MS), systemic lupus erythematosus (SLE), myasthenia gravis, rheumatoid arthritis, IBS and IBD Block, inhibit, reduce, antagonize or neutralize. Blocking, inhibiting, reducing or antagonizing signaling through IL-17RA and IL-17RC using the antibodies of the present invention may also be useful in pancreatic, kidney, pituitary and neuronal diseases. IDDM, NIDDM, pancreatitis and pancreatic cancer can benefit. Nephropathy such as glomerulosclerosis, membranous neuropathy, amyloidosis (which also affects the kidney among other tissues), renal arteriosclerosis, various causes of glomerulonephritis, renal fibroproliferative disease And SLE,
Mabs against IL-17A and IL-17F may also be useful in treating renal dysfunction associated with IDDM, type II diabetes (NIDDM), renal tumors and other diseases.

(3) Stimulate, enhance, increase or increase signaling through the IL-17A or IL-17F receptor in the treatment of autoimmune diseases such as IDDM, MS, SLE, myasthenia gravis, rheumatoid arthritis, IBS and IBD Start. Anti-IL-17A and IL-17F neutralizing monoclonal antibodies signal to alter the production of cytokines or surface proteins that differentiate into lymphocytes or other immune cells, alter proliferation, or improve autoimmunity. Can send. In particular, modulation of the T helper cell response to another pattern of cytokine secretion can deviate from autoimmunity and improve disease (Smith JA et al., J. Immunol.
160: 4841-4849, 1998). Similarly, agonist antibodies can be used to signal and drastically reduce and deviate immune cells involved in asthma, allergies and atopic diseases. Signaling through IL-17RA and IL-17RC can also be useful for diseases of the pancreas, kidney, pituitary and nerve cells. IDDM, NIDDM, pancreatitis and pancreatic cancer can benefit.

As described above, the antibodies described in the present specification can be used for autoimmune diseases, atopic diseases, NIDDM.
, IL-17F and IL-17 alone or together in the treatment of pancreatitis and renal dysfunction
It can be used to bind, block, inhibit, reduce, antagonize or neutralize A activity. The antibodies of the present invention are useful as antagonists of IL-17A or IL-17F cytokines. Such antagonism can be achieved by direct neutralization or binding of IL-17A and IL-17F.

Inflammation is a protective response by an organism to avoid invading pathogens. Inflammation is a cascading event involving many cellular humoral mediators. On the one hand, suppression of the inflammatory response can cause the host to be immunocompromised. However, when left unchecked, inflammation is a chronic inflammatory disease (
For example, psoriasis, arthritis, rheumatoid arthritis, multiple sclerosis, inflammatory bowel disease, etc.), septic shock and multiple organ failure. Importantly, these diverse pathologies share a common inflammatory mediator. A collection of diseases characterized by inflammation has a major impact on human morbidity and mortality. Thus, it is clear that the antibodies of the invention can have important therapeutic potential for a number of human and animal diseases ranging from asthma and allergies to autoimmunity and septic shock.

(1. Arthritis)
Arthritis, including osteoarthritis, rheumatoid arthritis, arthritic joints as a result of injury,
It is a common inflammatory condition that can benefit from therapeutic use of antibodies that antagonize, neutralize or block 17A and IL-17F. For example, rheumatoid arthritis (RA) is a systemic disease that affects the whole body and is the most common form of arthritis. It is characterized by inflammation of the membrane covering the joints, causing pain, stiffness, warmth, redness and swelling. Inflammatory cells release enzymes that can digest bone and cartilage. As a result of rheumatoid arthritis, the inflamed joint lining, the synovium, can invade and damage bone and cartilage, leading to joint deterioration and severe pain, among other physiological effects. Affected joints can lose their shape and alignment, resulting in pain and loss of movement.

Rheumatoid arthritis (RA) is an immune-mediated disease characterized by inflammation and subsequent tissue damage, especially leading to severe disability and increased mortality. Various cytokines are locally produced in rheumatoid joints. Many studies have shown that two prototypic inflammatory cytokines, IL-1 and TNF-α, play an important role in the mechanisms involved in synovial inflammation and progressive joint destruction. Indeed, TNF-α and IL-1 in RA patients
Inhibitor administration has resulted in dramatic improvement in clinical and biological signs of inflammation and reduction of radiological signs of bone erosion and cartilage destruction. However, despite these promising results, a significant proportion of patients do not respond to these drugs, suggesting that other mediators are also involved in the pathophysiology of arthritis (Gabay, Expert. Opin. Bio.
l. Ther. 2 (2): 135-149, 2002). One of those mediators may be IL-17A or IL-17F, such as IL-
Molecules that bind to or inhibit the activity of 17F or IL-17A, such as soluble IL-17RA, IL-17RA polypeptide or anti-IL-17RA antibody or binding partner, may cause inflammation in rheumatoid arthritis and other diseases. Can serve as a valuable treatment to reduce.

There are several animal models of rheumatoid arthritis known in the art. For example, in the collagen-induced arthritis (CIA) model, mice develop chronic inflammatory arthritis that closely resembles human rheumatoid arthritis. This makes it an ideal model for screening potential human anti-inflammatory compounds because CIA shares similar immunological and pathological features as RA. The CIA model is a well-known model in mice that depends on immune and inflammatory responses to occur. The immune response consists of B cells and C responding to collagen applied as an antigen.
It involves interaction with D4 + T cells, resulting in the production of anti-collagen antibodies. The inflammatory phase is the result of a tissue response from mediators of inflammation as a result of some of these antibodies that cross-react with mouse native collagen and activate the complement cascade. The advantage in using the CIA model is that the basic mechanism of pathogenesis is known. Related T cell and B cell epitopes on type II collagen have been identified, and various immunities (eg, delayed type hypersensitivity and anti-collagen antibodies) associated with immune-mediated arthritis and inflammation (eg, cytokines, chemokines and substrates) Degrading enzyme) parameters have been determined and can therefore be used to assess the effectiveness of test compounds in a CIA model (Wo
oley, Curr. Opin. Rheum. 3: 407-20, 1999; Willi
ams et al., Immunol. 89: 9784-788, 1992; Myers et al., Lif
e Sci. 61: 1861-78, 1997; and Wang et al., Immunol. 9
2: 8955-959, 1995).

One group found that anti-mouse IL-I when administered a single mouse IL-17 specific rat antiserum when introduced prophylactically or after joint inflammation symptoms were already present in the model reduced the joint inflammation symptoms in the animals. 17 antibody has been shown to reduce symptoms in the mouse CIA model relative to control mice, thus conceptually showing that anti-IL-17A antibodies may be beneficial in treating human disease (Lubberts et al., Arthritis Rh
eu. 50: 650-9, 2004). Thus, IL- in the treatment of certain human diseases such as arthritis, psoriasis, psoriatic arthritis, endotoxemia, inflammatory bowel disease (IBD), IBS, colitis and other inflammatory conditions disclosed herein. To neutralize 17A and / or IL-17F, antibodies that antagonize, neutralize or block the binding of IL-17A and IL-17F to their respective receptors can be used.

Administration of the antibodies of the present invention to these CIA model mice will result in the administration of such antibodies to IL-17.
Used to evaluate the use of A and IL-17F as antagonists, which can be used to ameliorate symptoms and change the course of the disease. For example, without limitation, 1
Infusion of 10-200 ug of antibodies of the present invention per mouse (depending on the subcutaneous, intraperitoneal or intramuscular route of administration, 1-7 times a week, but not limited to up to 4 weeks), disease score (foot score, occurrence of inflammation or disease) ) Can be significantly reduced. Depending on the start of antibody administration (eg,
Including before collagen immunization or at the time of collagen immunization or when disease has already progressed 2
Any time after the second collagen immunization), such IL-17A and IL-17F antibodies may be effective to prevent and prevent rheumatoid arthritis.

(2. Endotoxemia)
Endotoxemia is a serious disease in infectious pathogens such as bacteria and other infectious pathogens, sepsis, toxic shock syndrome, or in immunocompromised patients who are exposed to opportunistic infections. Therapeutically useful anti-inflammatory proteins such as the antibodies of the present invention can be useful in preventing and treating endotoxemia in humans and animals. Such antibodies can serve as valuable therapeutics that reduce inflammation and pathological effects in endotoxemia.

Lipopolysaccharide (LPS) -induced endotoxemia involves many pro-inflammatory mediators that cause pathological effects in infections, and LPS-induced endotoxemia in rodents is a potential pro-inflammatory Or a widely used and accepted model for studying the pharmacological effects of immunomodulators. LPS produced in gram-negative bacteria is a major causative agent of the pathogenesis of septic shock (Glausner et al., Lancet 338: 732, 1
991). Indeed, a shock-like condition can be induced experimentally by a single injection of LPS into an animal. Molecules produced by cells that respond to LPS can target pathogens directly or indirectly. Although these biological responses protect the host from invading pathogens, they can also cause damage. Thus, the massive stimulation of innate immunity resulting from severe Gram-negative infections is due to overproduction of cytokines and other molecules and lethality characterized by fever, hypotension, disseminated intravascular coagulation and multiple organ failure Leads to the development of septic shock syndrome, a sex syndrome (Dumitru et al., Cell 103: 1071-1083).
2000).

These toxic effects of LPS are mostly associated with macrophage activity that results in the release of numerous inflammatory mediators. Among these mediators, TNF appears to play an important role, as shown by prevention of LPS toxicity by administration of neutralizing anti-TNF antibody (Beutler et al., Science 229: 869, 1985).
E. It is sufficient that injection of E. coli LPS 1 ug into C57B1 / 6 mice results in a significant increase in circulating IL-6, TNF-α, IL-1 and acute phase proteins (eg, SAA) approximately 2 hours after injection Has been established. Since passive immunity against these mediators can lead to reduced mortality, LPS toxicity appears to be mediated by these cytokines (Beutler et al., Science 229: 869, 1985). The potential for immune intervention strategies for the prevention and / or treatment of septic shock is anti-TNF mAb
, IL-1 receptor antagonists, LIF, IL-10 and G-CSF.

Administration of the antibodies of the invention to these LPS induction models can be used to evaluate the use of such antibodies to ameliorate symptoms and alter the course of LPS-induced disease. Furthermore, the results showing inhibition of IL-17A and IL-17F by the antibodies of the present invention demonstrate the proof that such antibodies can also be used to ameliorate symptoms in the LPS induction model and alter the course of the disease. give. The model consists of IL-17A and IL-
The possibility of induction of 17F and treatment of disease with such antibodies is shown. Neutralization of IL-17A and IL-17F activity or other pro-inflammatory factors by the antibodies of the present invention is likely due to endotoxin, since LPS induces the production of pro-inflammatory factors that are probably responsible for the pathology of endotoxemia. It can be used to reduce the symptoms of endotoxemia as seen in shock.

(3. Inflammatory bowel disease IBD)
In the United States, about 500,000 people have colon and / or rectum (ulcerative colitis) or both,
Suffers from inflammatory bowel disease (IBD), which can affect the small and large intestine (Crohn's disease). The etiology of these diseases is unknown, but is associated with chronic inflammation of the affected tissue. IL-17A and IL-1
Antibodies that bind 7F may serve as valuable therapeutics to reduce inflammation and pathological effects in IBD and related diseases.

Ulcerative colitis (UC) is an inflammatory disease of the large intestine, commonly referred to as the colon, characterized by inflammation and ulceration of the mucosa and innermost layer of the colon. This inflammation causes the colon to drain frequently and causes diarrhea. Symptoms include loose stool and associated abdominal colic, fever and weight loss. The exact cause of UC is unknown, but recent research has shown that the body ’s natural defenses
This suggests that the body is acting on proteins in the body that are considered foreign (autoimmune reaction). Perhaps because these proteins are similar to intestinal bacterial proteins, they can incite or stimulate an inflammatory process that begins to destroy the lining of the colon. When the lining of the colon is destroyed,
Ulcers are formed, releasing mucus, pus and blood. Usually, the disease begins in the rectal region and can eventually extend throughout the large intestine. Repeated episodes of inflammation result in thickening of the intestinal / rectal wall with scar tissue. In severe cases, colon tissue death or sepsis can occur. Symptoms of ulcerative colitis vary in severity and their onset can be gradual or sudden. The onset can be triggered by many factors including respiratory infection or stress.

There are currently no cures for UC available, but treatment is focused on suppressing abnormal inflammatory processes in the colon lining. A treatment comprising a corticosteroid immunosuppressant (eg azathioprine, mercaptopurine and methotrexate) and aminosalicylic acid,
It can be used to treat the disease. However, long-term use of immunosuppressive agents such as corticosteroids and azathioprine can lead to serious side effects including bone thinning, cataracts, infection and liver and bone marrow effects. Surgery is one option for patients who are not good at current treatment. Surgery involves removal of the entire colon and rectum.

There are several animal models that can partially mimic chronic ulcerative colitis. The most widely used animal model is 2,4,6-trinitrobenzenesulfonic acid / ethanol (TNB).
S) Induced colitis model, which induces chronic inflammation and ulcers in the colon.
When TNBS is introduced into the colon of susceptible mice by intrarectal instillation, it induces a T cell-mediated immune response in the colonic mucosa, characterized by a high density of infiltration of T cells and macrophages across the colon wall. Causes widespread mucositis. Furthermore, this histopathology is accompanied by clinical features of progressive weight loss (wasting), bloody diarrhea, rectal prolapse and colon wall thickening (Neurath et al., Intern. Rev. Immunol. 19: 51-62,2
000).

Another colitis model uses dextran sulfate sodium (DSS), which induces acute colitis that manifests in mucosal ulcers with bloody diarrhea, weight loss, colon shortening and neutrophil infiltration. D
SS-induced colitis is characterized by histological features of infiltration of the lamina propria of inflammatory cells with lymphoid hyperplasia, local crypt damage and epithelial ulcers. These changes are thought to be expressed by the action of DSS on the epithelium and by phagocytosis of lamina propria cells and production of TNF-α and IFN-γ. DS for relevance to human disease, regardless of its general use
Some problems with the S mechanism remain unresolved. Since DSS is found in T cell-deficient animals such as SCID mice, it is considered a T cell-independent model.

Administration of antibodies of the invention to these TNBS or DSS models can be used to evaluate the use of such antibodies to ameliorate symptoms and alter the course of gastrointestinal disease. Furthermore, the results showing inhibition of IL-17A and IL-17F by such antibodies indicate that the antibodies of the invention can also be used to ameliorate symptoms in the colitis / IBD model and alter the course of the disease. Give a proof of concept.

(4. Psoriasis)
Psoriasis is a chronic skin disease that affects more than 7 million Americans. Psoriasis occurs when new skin cells proliferate abnormally, resulting in inflammatory, dilated and scaly skin spots where the old skin is not removed quickly enough. The most common form, psoriasis vulgaris, is characterized by inflammatory skin patches ("lesions") covered with silvery white scales. Psoriasis is limited to a few plaques or can include moderate to extensive skin areas, most commonly appearing on the scalp, knees, elbows and trunk. Psoriasis is very noticeable but not contagious. The pathogenesis of the disease includes chronic inflammation of the affected tissue. Antibodies that bind to IL-17A and IL-17F may serve as valuable therapeutics to reduce inflammation and pathological effects in psoriasis, other inflammatory skin diseases, skin / mucosal allergy and related diseases.

Psoriasis is a T cell-mediated inflammatory disorder of the skin that can cause considerable discomfort. It has no cure and is a disease that affects all ages. Psoriasis affects about 2 percent of the population in Europe and North America. Mild psoriasis patients are often able to control the disease with topical drugs, but more than one million patients worldwide require UV or systemic immunosuppressive therapy. Unfortunately, the inconvenience and risk of ultraviolet radiation and the toxicity of many therapies limit their long-term use. In addition, patients usually relapse with psoriasis and, in some cases, revert shortly after discontinuing immunosuppressive therapy.

Antibodies that bind to IL-17A and IL-17F are expressed in IL-17F within the diagnostic system.
Alternatively, it can be used to detect circulating concentrations of IL-17A and to detect IL-17A and / or IL-17F associated with acute phase inflammatory responses. An increased or decreased concentration of the ligand or receptor polypeptide can indicate a pathological condition including inflammation or cancer. IL-17A and IL-17F are known to induce an associated acute phase inflammatory response. Furthermore, IL-
Detection of acute phase proteins or molecules such as 17A or IL-17F can indicate a chronic inflammatory condition in some disease states (eg, asthma, psoriasis, rheumatoid arthritis, colitis, IBD). Detection of such a condition serves to diagnose the disease and helps the physician to select an appropriate treatment.

In addition to the other disease models described herein, the activity of the antibodies of the invention against inflammatory tissues derived from human psoriatic lesions can be measured in vivo using a severe combined immunodeficiency (SCID) mouse model. Multiple mouse models have been developed in which human cells are transplanted into immunodeficient mice (collectively referred to as xenograft models). For example, Cattan AR, D
ouglas E, Leuk. Res. 18: 513-22, 1994 and Flave
ll, DJ, Hematological Oncology 14: 67-82, 19
See 96. As an in vivo xenograft model of psoriasis, human psoriasis skin tissue is
Implanted in D mouse model and induced with appropriate antagonist. In addition, other psoriasis animal models in the art, such as human psoriasis skin grafts transplanted into the AGR129 mouse model, are used to evaluate the antibodies of the present invention and are induced with the appropriate antagonist (see eg Boyman, O. et al., J. Exp. Me, incorporated herein by reference.
d. (See Online publication # 20031482, 2004). Anti-IL-17A and IL-17F antibodies that bind, block, inhibit, reduce, antagonize or neutralize the activity of IL-17A and IL-17F are preferred antagonists. Similarly, to evaluate the anti-inflammatory properties of the antibodies of the invention described herein, human colitis, IBD,
Tissue or cells from arthritis or other inflammatory lesions can be used in the SCID model.

Therapies designed to eliminate, delay or reduce inflammation using the antibodies of the invention include:
It can be tested by administration of such antibodies to SCID mice with human inflammatory tissue (eg, psoriatic lesions, etc.) or other models described herein. The effectiveness of the treatment is
It is measured over time using methods well known in the art and is statistically assessed as an increase in anti-inflammatory effects within the treatment population. Some exemplary methods include, but are not limited to, measuring, for example, epithelial thickness, number of inflammatory cells in the upper dermis and grade of keratosis in a psoriasis model. Such methods are known in the art and are described herein. For example, Zeigler, M .; Et al., Lab Invest 81:12.
53, 2001; Zollner, T .; M.M. Et al. Clin. Invest. 109:
671, 2002; Yamanaka, N .; Et al., Microbio. l Immunol
. 45: 507, 2001; Raychaudhuri, S .; P. Et al., Br. J. et al. Der
matol. 144: 931, 2001; Boehnkke, W.M. H et al., Arch. De
rmatol. Res. 291: 104, 1999; Boehnkke, W .; H et al.
Invest. Dermatol. 116: 596, 2001; Nickoloff, B
. J. et al. Et al., Am. J. et al. Pathol. 146: 580, 1995; Boehnkke, W
. H et al. Cutan. Pathol. 24: 1, 1997; Sugai, J .; , M.M.
Et al. Dermatol. Sci. 17:85, 1998; and Villadsen
L. S. Et al. Clin. Invest. 112: 1571, 2003. To quantify the number of inflammatory or diseased cells present in the sample, IBD score (weight loss, diarrhea, rectal bleeding, colon length), foot disease score and inflammation score of CIA RA model,
Inflammation may be monitored over time using well known methods such as flow cytometry (or PCR).

Furthermore, psoriasis is a chronic inflammatory skin disease associated with hyperplastic epidermal keratinocytes and infiltrating mononuclear cells including CD4 + memory T cells, neutrophils and macrophages (Christo).
phers, Int. Arch. Allergy Immunol. 110: 199,1
996). It is now believed that environmental antigens play an important role in initiating and contributing to the pathology of the disease. However, it is the loss of tolerance to self-antigens that is thought to mediate the pathology of psoriasis. Dendritic cells and CD4 ⁺ T cells are thought to play an important role in antigen presentation and recognition that mediates the immune response leading to pathology. Recently, the inventors developed a psoriasis model based on the CD4 + CD45RB transplant model (Davenport)
Et al., Internet. Immunopharmacol. , 2: 653-672). The antibody of the present invention is administered to mice. Inhibition of disease scores (skin lesions, inflammatory cytokines) indicates the effectiveness of such antibodies in psoriasis.

(5. Atopic dermatitis)
AD is a common chronic inflammatory disease characterized by activated hypercytokines of helper T cell subset 2 (Th2). The exact etiology of AD is unknown, but numerous factors are involved, including hyperactive Th2 immune response, autoimmunity, infection, allergens and genetic predisposition. Important features of the disease are xeroderma (dry skin), pruritus (skin itching), conjunctivitis, inflammatory skin lesions, Staphylococcus aureus infection, elevated blood eosinophilia,
Includes chronic dermatitis with elevated serum IgE and IgG1 and T cell, mast cell, macrophage and eosinophil infiltration. S. It is recognized that colonization or infection with aureus exacerbates AD and continues this chronic skin disease.

AD is often found in patients with asthma and allergic rhinitis and is frequently an early sign of allergic disease. About 20% of the population in Western countries suffer from these allergic diseases, and the incidence of AD in developed countries is rising for unknown reasons. AD usually begins in childhood and can often last from adolescence to adulthood. Current treatments for AD include topical corticosteroids, oral cyclosporin A, tacrolimus (FK506 in ointment form)
) And non-corticosteroid immunosuppressive agents and interferon-γ. A
Despite the variety of treatments for D, the symptoms of many patients do not improve, or patients have adverse reactions to drugs and require the search for other more effective therapeutic agents. The antibodies of the present invention, including anti-human IL-17A and IL-17F neutralizing antibodies of the present invention, are specific for certain atopic dermatitis, inflammatory skin diseases and other inflammatory diseases disclosed herein. It can be used to neutralize IL-17A and IL-17 in the treatment of human diseases.

(6. Asthma)
IL-17 plays an important role in allergen-induced T cell activation and neutrophil airway influx. The receptor for IL-17 is expressed in the respiratory tract (Yao et al., Immunity 3:
811 (1995)), IL-17-mediated neutrophil recruitment in allergic asthma is the chemoattractant IL- produced mostly by IL-17-stimulated bronchial epithelial cells (HBEC) and human bronchial fibroblasts. 8, GRO-α and macrophage inflammatory protein-2 (
MIP-2) (Yao et al., J Immunol 155: 5483 (199)
5)); Molet et al., J Allergy Clin Immunol 108: 43
0 (2001)). Furthermore, IL-17 stimulates HBEC and is a neutrophil activator I
L-6 is released (Fossiez et al., J Exp Med 183: 2593 (1996).
) And Linden et al., Int Arch Allergy Immunol 126.
179 (2001)) and was shown to cooperate with TNF-α to prolong human neutrophil survival in vitro (Laan et al., Eur Respir J 21: 387 (2003)).
). Furthermore, IL-17 is a cytokine involved in airway remodeling, such as IL-6 and IL-11 which are profibrotic cytokines and granulocyte colony stimulating factor (G-CSF) and granulocyte macrophages which are inflammatory mediators Colony stimulating factor (GM-
Its ability to enhance the secretion of (CSF) can amplify the inflammatory response in asthma (Molet et al., J Allergy Clin Immunol 108: 430 (
2001)).

Clinical evidence indicates that severe acute exacerbations of asthma are associated with neutrophil recruitment and activation in the respiratory tract, and therefore, IL-17 appears to play an important role in asthma. Patients with mild asthma show a detectable increase in local concentration of free soluble IL-17A protein (Molet et al., J Allergy Clin Immunol 108: 430).
(2001)), healthy human volunteers with severe airway inflammation induced by being trapped in a piggery show a marked increase in the concentration of free soluble IL-17A protein in the bronchoalveolar space (Fossiez et al., J Exp Med 183: 2593 (199
6) and Linden et al., Int Arch Allergy Immunol 12
6: 179 (2001)). Moreover, sputum concentrations of IL-17 correlate with patients with increased airway hypersensitivity (Barczyk et al., Respir Med 97: 726 (20
03)).

In an animal model of airway hypersensitivity, chronic inhalation of ovalbumin by sensitized mice, along with bronchial neutrophilia, IL-17 m in bronchial eosinophilic inflammation and inflammatory lung tissue
Resulted in early induction of RNA expression (Hellings et al., Am J Respir C
ell Mol Biol 28:42 (2003)). Anti-IL-17 monoclonal antibody strongly reduced bronchial neutrophil influx, but significantly increased IL-5 concentration in bronchoalveolar lavage fluid and serum and exacerbation of allergen-induced bronchial eosinophil influx This suggests that 17A may be involved in determining the balance of neutrophil and eosinophil accumulation following antigenic injury (Id.)
.

Among the IL-17 family members, IL-17F is most closely related to IL-17A. The biological activity mediated by IL-17F is similar to IL-17A, and IL-1
7F stimulates the production of IL-6, IL-8 and G-CSF (Hurst et al., J Im
munol 169: 443 (2002)). IL-17F is IL-2 in endothelial cells
Also induces the production of transforming growth factor (TGF) -α and monocyte chemotactic protein (MCP) (Starnes et al., J Immunol 167: 4137 (2001)). Similarly,
Allergen administration can increase local IL-17F in patients with allergic asthma (Ka
waguchi et al., J Immunol 167: 4430 (2001)). Gene delivery of IL-17F in the mouse lung increases neutrophils in the bronchoalveolar space, but IL-
Mucosal delivery of the 17F gene enhances Ag-induced pulmonary neutrophilia levels and airway responsiveness to methacholine (Oda et al., Am J Respir Crit Care Med
171: 12 (2005)).

Apart from asthma, multiple chronic inflammatory airway diseases are characterized by neutrophil recruitment in the airways,
L-17 has been reported to play an important role in the pathogenesis of respiratory diseases such as chronic obstructive pulmonary disease (COPD), bacterial pneumonia and cystic fibrosis (Linden et al., Eur R
espir J 15: 973 (2000), Ye et al. Am J Respir Cel.
l Mol Biol 25: 335 (2001), Rahman et al., Clin Imm.
unol 115: 268 (2005)). Anti-IL-17A and anti-IL-17F antibodies can be shown to be effective for chronic inflammatory airway diseases in an in vitro model of inflammation.
Of antagonists to IL-17F and IL-17A activity, such as antibodies of the invention,
IL-17A or IL- produced from cultured HBEC or bronchial fibroblasts
The ability to inhibit 17F-induced cytokines and chemokines is IL-17A and / or
Or it can be used as a measure of the effectiveness of such antagonists in blocking the production of inflammatory mediators that arise directly from F stimulation. If the production and expression of inflammatory mediators are significantly reduced by adding antagonists to IL-17F and IL-17A activity, such as antibodies of the present invention, it is effective in the inflammatory aspect associated with chronic airway inflammation Can be expected.

(7. Irritable bowel syndrome (“IBS”))
Irritable bowel syndrome represents a disease characterized by abdominal pain or discomfort and irregular bowel habits. IBS patients can be characterized by three main groups based on defecation habits: mainly patients with soft or frequent bowel movements, patients with mainly solid or low frequency bowel movements, and patients with indefinite or normal stool (Talley et al., 2002). Although changes in intestinal motility, abnormal epithelial function, abnormal passage of feces and gas, and stress can contribute to symptoms, visceral hypersensitivity is an important feature in most patients. Genetic factors that affect impairments in central processing of pain signaling and afferent signals are postulated to make patients susceptible to IBS after certain environmental exposures. Studies have also shown that inflammatory responses in the colon contribute to increased sensitivity of smooth muscle and enteric nerves, and thus can disrupt sensory and motor functions in the intestine (Col)
Lins et al., 2001). There is a clinical overlap between IBS and IBD, and IBS-like symptoms are frequently reported in patients before diagnosis of IBD, and more than expected IBS symptoms are reported in patients in remission from confirmed IBD ing. Thus, with IBS and IBD at both ends of the same spectrum, these diseases may coexist more frequently than expected or may exist continuously. However, it should be noted that in most IBS patients, colon biopsy specimens appear normal. However, IBS significantly affects a very large number of patients (approximately 16 million patients in the United States in 2000), with a total cost of $ 1.7 billion (fiscal 2000). Thus, among the most prevalent and costly gastrointestinal diseases / disorders, IBS is second only to gastroesophageal reflux disease (GERD). However, unlike GERD, treatment for IBS is still inadequate (Talley et al., 2002; Farhadi et al., 21001;
Collins et al., 2001) show that IBS clearly represents an unmet medical need.

Central (psycho-social) or peripheral (tissue irritation, inflammation, infection) of normal homeostasis
A convergent disease model has been proposed that assumes improved responsiveness of nerves, immunity or neuroimmune circuits in the central nervous system (CNS) or intestine to disturbance (Talley et al., 2002). This improved responsiveness results in dysregulation of intestinal motility, epithelial function (immunity, permeability) and visceral hypersensitivity, which in turn gives rise to IBS symptoms.

Several different molecules may play a role in the pathogenesis of IBS, including the role of molecules that stimulate nerve cells and molecules that are involved in the initiation of inflammatory processes. It is known that a plurality of molecules including IL-17D, IL-17B and IL-31 are associated with possible activities in nerve cells, either by their direct expression in neurons or by expression of their receptors. is there. In addition, a plurality of I's including IL-17A, IL-17F, IL-23 and IL-31
L-17 family members and related molecules are associated with intestinal inflammation.

The effectiveness of inhibitors / antagonists of these molecules can be tested in vivo in animal models of disease. Several animal models have been proposed that mimic the important features of IBS and include central target stimulation (stress) or peripheral target stimulation (infection, inflammation). Two examples of in vivo animal models that can be used to determine the effectiveness of inhibitors in the treatment of IBS are (i) models that focus on the primary pathogenesis of IBS targeted to the CNS (
Stress model) and (ii) a model that focuses on the inducers of stress targeting the intestine (ie, intestinal inflammation, infection or physical stress). However, events in the CNS or gastrointestinal (GI) tract do not occur in isolation, but the symptoms of IBS are
It should be noted that it is most likely to result from a complex interaction between signals from S (and vice versa).

For pharmaceutical use, the antibodies of the invention are formulated for parenteral, particularly intravenous or subcutaneous delivery, according to conventional methods. Intravenous administration is, for example, by bolus infusion using a minipump or other suitable technique, controlled release, or by infusion over a typical period of one to several hours. In general, a pharmaceutical formulation comprises a hematopoietic protein in combination with a pharmaceutically acceptable vehicle such as saline, buffered saline, 5% dextrose, and the like. The formulation may further include one or more excipients, preservatives, solubilizers, buffers, albumin to prevent protein loss on the vial surface, and the like. When using such combination therapy, cytokines can be combined in a single formulation or administered in separate formulations. Formulation methods are well known in the art, for example, Remington's Pharmaceutical.
Sciences, Gennaro (eds.), Mack Publishing Co. ,
Easton PA, 1990 (incorporated herein by reference).
The therapeutic amount is generally in the range of 0.1 to 100 mg / kg of the patient's body weight per day, preferably 0.5 to 20 mg / kg per day, and the exact dose depends on the nature of the disease being treated And determined by the clinician according to acceptable criteria, taking into account the severity, patient constitution, etc. Dosage determination is within the level of ordinary skill in the art. In general, the protein is administered for up to 28 days after chemotherapy or bone marrow transplantation or until a platelet count greater than 20,000 / mm ³ , preferably greater than 50,000 / mm ³ is obtained. More generally, proteins are administered over a week or less, often over 1-3 days. In general, a therapeutically effective amount of an antibody of the invention is clinically significant for the proliferation and / or differentiation of lymphoid or myeloid progenitor cells, manifesting as an increased circulating concentration of mature cells (eg, platelets or neutrophils). An amount sufficient to cause an increase. Therefore, treatment of platelet disorders is continued until a platelet count of at least 20,000 / mm ³ , preferably 50,000 / mm ³ is reached. The antibodies of the present invention can also be administered in combination with other cytokines such as IL-3, -6 and -11; stem cell factor; erythropoietin; G-CSF and GM-CSF. Within the regimen of combination therapy, in general, daily doses of other cytokines are EPO
, 150 U / kg; GM-CSF, 5-15 lg / kg; IL-3, 1-5 lg / kg;
And G-CSF, 1-25 lg / kg. Combination therapy using EPO is indicated, for example, for anemic patients with low EPO concentrations.

In general, the dose of antibody administered will vary depending on such factors as the patient's age, weight, height, sex, general condition and past medical history. Usually, about 1 pg / kg to 10 mg / kg (drug amount /
While it is desirable to give the recipient an antibody dose within the range of the patient's weight), smaller or larger doses may be administered depending on the situation.

Administration of the antibodies of the invention to a patient may be intravenous, intraarterial, intraperitoneal, intramuscular, subcutaneous, intrapleural, intrathecal, perfusion with a local catheter or direct intralesional injection. When administering therapeutic proteins by infusion, administration can be by continuous infusion or by single or multiple boluses.

Additional routes of administration include oral, mucosal, pulmonary and transdermal. Oral delivery is suitable for polyester microspheres, zein microspheres, proteinoid microspheres, polycyanoacrylate microspheres and lipid-based systems (eg, DiBase and Morrel, “Oral Delivery of Microencapsul
“ated Proteins”, Protein Delivery: Physical
Systems, Sanders and Hendren (eds), pages 255-288 (P
see Lenum Press, 1997)). The feasibility of intranasal delivery is exemplified by a mode such as insulin administration (eg, Hinchcliffe and I
llum, Adv. Drug Deliv. Rev. 35: 199 (1999)). Dry or liquid particles containing the antibodies of the invention can be prepared and inhaled using a dry powder disperser, liquid aerosol generator, or nebulizer (eg, Pettit and Gombotz, TIBTECH 16: 343 (1998); Patton et al. , Adv
. Drug. Deliv. Rev. 35: 235 (1999)). This approach is exemplified by the AERX diabetes management system, which is a portable electronic inhaler that delivers aerosolized insulin to the lungs. Studies have shown that proteins as large as 48,000 kDa have been delivered across the skin at therapeutic concentrations using low frequency ultrasound, which illustrates the feasibility of transdermal administration (Mitragotri et al., Science 269: 850 (1995))
. Transdermal delivery using electroporation provides another means of administering molecules with IL-17A and IL-17F binding activity (Pots et al., Pharm. Biotechnol. 1).
0: 213 (1997)).

Pharmaceutical compositions containing the antibodies of the invention can be formulated according to known methods for preparing pharmaceutically useful compositions, whereby the therapeutic protein is in a mixture with a pharmaceutically acceptable carrier. Can be combined. A composition is said to be a “pharmaceutically acceptable carrier” if its administration can be tolerated by a recipient patient. Sterile phosphate buffered saline is an example of a pharmaceutically acceptable carrier. Other suitable carriers are well known to those skilled in the art. For example, G
ennaro (hen), Remington's Pharmaceutical Sci
ences, 19th edition (Mack Publishing Company 1995)
Please refer to.

For therapeutic purposes, the antibodies of the invention and pharmaceutically acceptable carriers are administered to the patient in a therapeutically effective amount. A combination of a therapeutic molecule of the present invention and a pharmaceutically acceptable carrier is said to be administered in a “therapeutically effective amount” if the dosage is physiologically significant. An agent is physiologically significant if its presence results in a detectable change in the physiology of the recipient patient. For example, an agent used to treat inflammation is physiologically significant if its presence alleviates the inflammatory response. Effective treatment can be evaluated in a variety of ways. In one embodiment, effective treatment is determined by a reduction in inflammation. In other embodiments, the effective treatment is characterized by suppression of inflammation. In yet other embodiments, effective treatment is assessed by improving the patient's health, including symptoms such as weight gain, physical recovery, reduced pain, good development and subjective indicators from healthier patients. .

The pharmaceutical composition comprising the antibody of the present invention may be provided in a liquid dosage form, an aerosol or a solid dosage form. Liquid dosage forms are exemplified by injectable solutions and oral suspensions. Exemplary solid dosage forms include capsules, tablets and sustained release dosage forms. The latter dosage form is exemplified by mini-osmotic pumps and implants (Bremer et al., Pharm. Biotechnol. 10
: 239 (1997); Ranade, "Implants in Drug Deli
VERY ", Drug Delivery Systems, Ranade and Hol
linger (ed.), pages 95-123 (CRC Press 1995); Breme
r et al., “Protein Delivery with Infusion Pupms
", Protein Delivery: Physical Systems, Sand
ers and Hendren (eds.), pages 239-254 (Plenum Press)
1997); Yeway et al., “Delivery of Proteins from.
a Controlled Release Injectable Implant ”
, Protein Delivery: Physical Systems, Sande
rs and Hendren (eds.), pp. 93-117 (Plenum Press 19)
97)).

Liposomes provide one means of delivering therapeutic polypeptides to a patient by intravenous, intraperitoneal, intrathecal, intramuscular, subcutaneous or oral administration, inhalation or intranasal administration. Liposomes are microscopic vesicles consisting of one or more lipid bilayers surrounding an aqueous compartment (
Bakker-Woudenberg et al., Eur. J. et al. Clin. Microbiol.
Infect. Dis. 12 (Appendix 1): S61 (1993), Kim, Drugs 4
6: 618 (1993) and Ranade, “Site-Specific Drug”
g Delivery Using Liposomes as Carriers ",
Drug Delivery Systems, Ranade and Hollinger
(Eds.), Pages 3-24 (CRC Press 1995). Liposomes are similar in composition to cell membranes, so that liposomes can be administered safely and are biodegradable. Depending on the preparation method, the liposome may be monolayered or multilayered, and the liposome has a diameter of 0.
. The size can vary from 02 μm to more than 10 μm. Liposomes can encapsulate a variety of substances: hydrophobic substance compartments in the bilayer and hydrophilic substance compartments in the interior aqueous space (eg, Machy et al. Liposomes In Cell Biology A
nd Pharmacology (John Libbey 1987) and Ost
ro et al., American J. et al. Hosp. Pharm. 46: 1576 (1989)). Furthermore, the therapeutic availability of the encapsulated material can be controlled by varying the size of the liposomes, the number of bilayers, the lipid composition, and the charge and surface characteristics of the liposomes.

Liposomes can adsorb to virtually any type of cell and then slowly release the encapsulated material. Alternatively, the absorbed liposomes can be taken up by phagocytic cells.
Endocytosis is followed by lysosomal degradation of liposomal lipids and release of encapsulated material (Scherphof et al., Ann. NY Acad. Sci. 446: 368 (198
5)). After intravenous administration, small liposomes (0.1-1.0 μm) are usually taken up by cells of the reticuloendothelial system mainly present in the liver and spleen, while liposomes larger than 3.0 μm are deposited in the lung. Is done. This selective uptake of smaller liposomes by cells of the reticuloendothelial system has been used to deliver chemotherapeutic agents to macrophage and liver tumors.

The reticuloendothelial system can be circumvented by multiple methods including saturation with high doses of liposomal particles or selective macrophage inactivation by pharmacological means (Claassen et al., Bio
chim. Biophys. Acta 802: 428 (1984)). In addition, incorporation of glycolipids or polyethylene glycol derivatized phospholipids into liposome membranes has been shown to result in a significant decrease in uptake by the reticuloendothelial system (Allen et al., Bio
chim. Biophys. Acta 1068: 133 (1991); Allen et al.,
Biochim. Biophys. Acta 1150: 9 (1993)).

Liposomes can also be prepared to target specific cells or organs by diversifying their phospholipid composition or by inserting receptors or ligands into the liposomes. For example, liposomes prepared with a high content of nonionic surfactant have been used to target the liver (Hayakawa et al., Japanese Patent 04-244,0).
18; Kato et al., Biol. Pharm. Bull. 16: 960 (1993)). These formulations consist of mixing soy phosphatidylcholine, α-tocopherol and ethoxylated hydrogenated castor oil (HCO-60) in methanol, concentrating the mixture under vacuum,
The mixture was then prepared by reconstitution with water. A liposomal formulation of dipalmitoylphosphatidylcholine (DPPC) containing soy-derived steryl glucoside mixture (SG) and cholesterol (Ch) has also been shown to target the liver (Shimiz)
u et al., Biol. Pharm. Bull. 20: 881 (1997)).

Alternatively, various targeting ligands such as antibodies, antibody fragments, carbohydrates, vitamins and transport proteins can be attached to the surface of the liposome. For example, liposomes can be modified with branched galactosyl lipid derivatives to target asialoglycoprotein (galactose) receptors expressed only on the surface of hepatocytes (Kato and Sugiyama, Crit.
Rev. Ther. Drug Carrier Syst. 14: 287 (1997);
Murahashi et al., Biol. Pharm. Bull. 20: 259 (1997))
. Similarly, Wu et al., Hepatology 27: 772 (1998) found that labeling of liposomes with asialofetin resulted in a shortened plasma half-life of liposomes and significantly enhanced uptake of asialofetin labeled liposomes by hepatocytes. Showed to bring. On the other hand, hepatic accumulation of liposomes containing branched galactosyl lipid derivatives can be inhibited by pre-injection with asialofetin (Murahashi et al., Biol. Pharm.
Bull. 20: 259 (1997)). Polyaconylated human serum albumin liposomes provide another approach for targeting liposomes to hepatocytes (Kamps et al., Pr.
oc. Nat'l. Acad. Sci. USA 94: 11681 (1997)). In addition, Geho et al., US Pat. No. 4,603,044, describes a hepatocyte-targeted liposomal vesicle delivery system with specificity for hepatobiliary receptors associated with specialized metabolic cells of the liver. .

In a more general approach to tissue targeting, target cells are pre-labeled with a biotinylated antibody specific for the ligand expressed by the target cells (Harasym et al., Adv. Dru).
g Deliv. Rev. 32:99 (1998)). After plasma disappearance of free antibody, streptavidin-conjugated liposomes are administered. In another approach, targeted antibodies are bound directly to liposomes (Harasym et al., Adv. Drug. Deliv. Rev. 32:99 (
1998)).

Polypeptides and antibodies can be encapsulated in liposomes using standard techniques for protein microencapsulation (see, eg, Anderson et al., Infect. Immu.
n. 31: 1099 (1981), Anderson et al., Cancer Res. 50:
1853 (1990) and Cohen et al., Biochim. Biophys. Acta
1063: 95 (1991), Alving et al., “Preparation and
Use of Liposomes in Immunological Studio
s ", Liposome Technology, 2nd edition, volume 3, Gregoriad
is (ed.), page 317 (CRC Press 1993), Wassef et al., Meth.
. Enzymol. 149: 124 (1987)). As noted above, therapeutically useful liposomes can contain various components. For example, liposomes can include lipid derivatives of poly (ethylene glycol) (Allen et al., Biochim. Biophys. A
cta 1150: 9 (1993)).

Degradable polymer microspheres are designed to maintain high systemic concentrations of therapeutic proteins. Microspheres are prepared from degradable polymers such as poly (lactide-co-glycolide) (PLG), polyanhydrides, poly (orthoesters), non-biodegradable ethyl vinyl acetate polymers, and proteins are incorporated into the polymer. Encapsulated (Gombotz and P
ettit, Bioconjugate Chem. 6: 332 (1995); Rana
de, “Role of Polymers in Drug Delivery”, D
rug Delivery Systems, Ranade and Hollinger (
Ed.) 51-93 (CRC Press 1995); Roskos and Mask
iewicz, “Degradable Controlled Release Sy
stems Useful for Protein Delivery ", Prote
in Delivery: Physical Systems, Sanders and H
endren (ed.), pages 45-92 (Plenum Press 1997); Bar
tus et al., Science 281: 1161 (1998); Putney and Bur
ke, Nature Biotechnology 16: 153 (1998); Put
ney, Curr. Opin. Chem. Biol. 2: 548 (1988)). Polyethylene glycol (PEG) coated nanospheres also provide carriers for intravenous administration of therapeutic proteins (see, eg, Gref et al., Pharm. Biotechnol.
10: 167 (1997)).

The present invention relates to IL-17A and IL-1 such as IL-17A and IL-17F antibodies.
Also contemplated are chemically modified polypeptides having 7F binding activity, where the polypeptide is attached to the polymer, as described above.

For example, Ansel and Popovich, Pharmaceutical Dos
age Forms and Drug Delivery Systems, 5th Edition (
Lea & Febiger 1990), Gennaro (ed.), Remingto
n's Pharmaceutical Sciences, 19th Edition (Mack Pu
blishing Company 1995) and Ranade and Holli
nger, Drug Delivery Systems (CRC Press 19
96), other dosage forms can be devised by those skilled in the art.

By way of example, the pharmaceutical composition can be supplied as a kit comprising a container containing an antibody of the invention.
The antibodies of the invention can be provided in the form of injectable solutions for single or multiple administration or as sterile powders that are reconstituted prior to injection. Alternatively, such a kit can include a dry powder disperser, a liquid aerosol generator or a nebulizer for administering the therapeutic polypeptide. Such a kit may further include document information regarding the indication and use of the pharmaceutical composition. Further, such information may include a statement that the antibody composition is contraindicated in patients with known hypersensitivity to IL-17A and IL-17F.

Pharmaceutical compositions containing the antibodies of the invention can be supplied in liquid dosage forms, aerosols or solid dosage forms. Liquid dosage forms are exemplified by injectable solutions, aerosols, liquid drops, phase solutions and oral suspensions. Exemplary solid dosage forms include capsules, tablets and sustained release dosage forms. The latter dosage form is exemplified by mini-osmotic pumps and implants (Bremer et al., Phar.
m. Biotechnol. 10: 239 (1997); Ranade, "Implan
ts in Drug Delivery ", Drug Delivery System
ms, Ranade and Hollinger (eds.), pages 95-123 (CRC Pre
ss 1995); Bremer et al., “Protein Delivery with.
"Infusion Pupms", Protein Delivery: Physic
al Systems, Sanders and Hendren (eds.), pp. 239-254 (Plenum Press 1997); Yewey et al., “Delivery of.
Proteins from a Controlled Release Inge
ctable Implant ", Protein Delivery: Physica
l Systems, Sanders and Hendren (eds.), pp. 93-117 (P
lenum Press 1997)). Other solid dosage forms include creams, pastes,
Other topological applications etc. are included.

Liposomes provide one means of delivering therapeutic polypeptides to a patient by intravenous, intraperitoneal, intrathecal, intramuscular, subcutaneous or oral administration, inhalation or intranasal administration. Liposomes are microscopic vesicles consisting of one or more lipid bilayers surrounding an aqueous compartment (
Bakker-Woudenberg et al., Eur. J. et al. Clin. Microbiol.
Infect. Dis. 12 (Appendix 1): S61 (1993), Kim, Drugs 4
6: 618 (1993) and Ranade, “Site-Specific Drug”
g Delivery Using Liposomes as Carriers ",
Drug Delivery Systems, Ranade and Hollinger
(Eds.), Pages 3-24 (CRC Press 1995). Liposomes are similar in composition to cell membranes, so that liposomes can be administered safely and are biodegradable. Depending on the preparation method, the liposome may be monolayered or multilayered, and the liposome has a diameter of 0.
. The size can vary from 02 μm to more than 10 μm. Liposomes can encapsulate a variety of substances: hydrophobic substance compartments in the bilayer and hydrophilic substance compartments in the interior aqueous space (eg, Machy et al. Liposomes In Cell Biology A
nd Pharmacology (John Libbey 1987) and Ost
ro et al., American J. et al. Hosp. Pharm. 46: 1576 (1989)). Furthermore, the therapeutic availability of the encapsulated material can be controlled by varying the size of the liposomes, the number of bilayers, the lipid composition, and the charge and surface characteristics of the liposomes.

Liposomes can adsorb to virtually any type of cell and then slowly release the encapsulated material. Alternatively, the absorbed liposomes can be taken up by phagocytic cells.
Endocytosis is followed by lysosomal degradation of liposomal lipids and release of encapsulated material (Scherphof et al., Ann. NY Acad. Sci. 446: 368 (198
5)). After intravenous administration, small liposomes (0.1-1.0 μm) are usually taken up by cells of the reticuloendothelial system mainly present in the liver and spleen, while liposomes larger than 3.0 μm are deposited in the lung. Is done. This selective uptake of smaller liposomes by cells of the reticuloendothelial system has been used to deliver chemotherapeutic agents to macrophage and liver tumors.

The reticuloendothelial system can be circumvented by multiple methods including saturation with high doses of liposomal particles or selective macrophage inactivation by pharmacological means (Claassen et al., Bio
chim. Biophys. Acta 802: 428 (1984)). In addition, incorporation of glycolipids or polyethylene glycol derivatized phospholipids into liposome membranes has been shown to result in a significant decrease in uptake by the reticuloendothelial system (Allen et al., Bio
chim. Biophys. Acta 1068: 133 (1991); Allen et al.,
Biochim. Biophys. Acta 1150: 9 (1993)).

Liposomes can also be prepared to target specific cells or organs by diversifying their phospholipid composition or by inserting receptors or ligands into the liposomes. For example, liposomes prepared with a high content of nonionic surfactant have been used to target the liver (Hayakawa et al., Japanese Patent 04-244,0).
18; Kato et al., Biol. Pharm. Bull. 16: 960 (1993)). These formulations consist of mixing soy phosphatidylcholine, α-tocopherol and ethoxylated hydrogenated castor oil (HCO-60) in methanol, concentrating the mixture under vacuum,
The mixture was then prepared by reconstitution with water. A liposomal formulation of dipalmitoylphosphatidylcholine (DPPC) containing soy-derived steryl glucoside mixture (SG) and cholesterol (Ch) has also been shown to target the liver (Shimiz)
u et al., Biol. Pharm. Bull. 20: 881 (1997)).

Alternatively, various targeting ligands such as antibodies, antibody fragments, carbohydrates, vitamins and transport proteins of the invention can be bound to the surface of the liposome. For example, liposomes can be modified with branched galactosyl lipid derivatives to target asialoglycoprotein (galactose) receptors that are expressed only on the surface of hepatocytes (Kato and Sugiyama, C
rit. Rev. Ther. Drug Carrier Syst. 14: 287 (19
97); Murahashi et al., Biol. Pharm. Bull. 20: 259 (19
97)). Similarly, Wu et al., Hepatology 27: 772 (1998) showed that labeling of liposomes with asialofetin resulted in a shortened plasma half-life of liposomes and
It has been shown that hepatocytes result in greatly enhanced uptake of asialofetin labeled liposomes. On the other hand, hepatic accumulation of liposomes containing branched galactosyl lipid derivatives can be inhibited by prior injection of asialofetin (Murahashi et al., Biol. Ph.
arm. Bull. 20: 259 (1997)). Polyaconylated human serum albumin liposomes provide an alternative approach for targeting liposomes to hepatocytes (Kamps
Et al., Proc. Nat'l. Acad. Sci. USA 94: 11681 (1997)
). In addition, Geho et al., US Pat. No. 4,603,044, describes a hepatocyte-targeted liposomal vesicle delivery system with specificity for hepatobiliary receptors associated with specialized metabolic cells of the liver. .

In a more general approach to tissue targeting, target cells are pre-labeled with a biotinylated antibody specific for the ligand expressed by the target cells (Harasym et al., Adv. Dru).
g Deliv. Rev. 32:99 (1998)). After plasma disappearance of free antibody, streptavidin-conjugated liposomes are administered. In another approach, targeted antibodies are bound directly to liposomes (Harasym et al., Adv. Drug. Deliv. Rev. 32:99 (
1998)).

The antibodies of the invention can be encapsulated in liposomes using standard techniques for protein microencapsulation (see, eg, Anderson et al., Infect. Immun. 31:
1099 (1981), Anderson et al., Cancer Res. 50: 1853 (
1990) and Cohen et al., Biochim. Biophys. Acta 1063
95 (1991), Alving et al., “Preparation and Use o
f Liposomes in Immunological Studies ", Li
Posology Technology, 2nd edition, 3rd volume, Gregoriadis (edition)
317 (CRC Press 1993), Wassef et al., Meth. Enzy
mol. 149: 124 (1987)). As noted above, therapeutically useful liposomes can contain various components. For example, liposomes can include lipid derivatives of poly (ethylene glycol) (Allen et al., Biochim. Biophys. Acta 1
150: 9 (1993)).

Degradable polymer microspheres are designed to maintain high systemic concentrations of therapeutic proteins. Microspheres are prepared from degradable polymers such as poly (lactide-co-glycolide) (PLG), polyanhydrides, poly (orthoesters), non-biodegradable ethyl vinyl acetate polymers, and proteins are incorporated into the polymer. Encapsulated (Gombotz and P
ettit, Bioconjugate Chem. 6: 332 (1995); Rana
de, “Role of Polymers in Drug Delivery”, D
rug Delivery Systems, Ranade and Hollinger (
Ed.) 51-93 (CRC Press 1995); Roskos and Mask
iewicz, “Degradable Controlled Release Sy
stems Useful for Protein Delivery ", Prote
in Delivery: Physical Systems, Sanders and H
endren (ed.), pages 45-92 (Plenum Press 1997); Bar
tus et al., Science 281: 1161 (1998); Putney and Bur
ke, Nature Biotechnology 16: 153 (1998); Put
ney, Curr. Opin. Chem. Biol. 2: 548 (1988)). Polyethylene glycol (PEG) coated nanospheres also provide carriers for intravenous administration of therapeutic proteins (see, eg, Gref et al., Pharm. Biotechnol.
10: 167 (1997)).

For example, Ansel and Popovich, Pharmaceutical Dos
age Forms and Drug Delivery Systems, 5th Edition (
Lea & Febiger 1990), Gennaro (ed.), Remingto
n's Pharmaceutical Sciences, 19th Edition (Mack Pu
blishing Company 1995) and Ranade and Holli
nger, Drug Delivery Systems (CRC Press 19
96), other dosage forms can be devised by those skilled in the art.

The present invention contemplates compositions of antibodies that bind to IL-17A and IL-17F, as well as methods and therapeutic uses involving such antibodies as described herein. Such compositions can further comprise a carrier. The carrier can be a conventional organic or inorganic carrier. Examples of carriers include water, buffer solution, alcohol, polyethylene glycol, macrogol, sesame oil, corn oil and the like.

  The invention is further illustrated by the following non-limiting examples.

Example 1
(IL-17F mRNA is upregulated in a mouse asthma model)
IL-17F mRNA concentration was measured in a mouse sensitization / airway administration model. On day zero and day 7 in 50% Image Alum (Pierce), recombinant Dermatophagoides pteronyssinus allergen 1 (DerP1) (Indoor biotechnologies, Card, UK)
iff) Groups of 8-10 week old mice were sensitized by intraperitoneal injection of 10 ug. 7 days later, 3
20 ug DerP1 in 50 ul PBS for consecutive days (days 14, 15 and 16)
Was administered to mice. This group was represented by 4 mice. Negative controls included 5 mice receiving phosphate buffered saline (PBS) sensitization followed by PBS administration. In addition, 3
One mouse received DerP1 sensitization and then PBS administration. Total lung tissue was collected 48 hours after allergen or control administration and total RNA was isolated.

First strand cDNA was prepared using the same amount of total RNA from each subject. Qiagen ho
IL-17F PCR was applied using tstar polymerase (Qiagen, Valencia, CA) and manufacturer's recommendations. For IL-17F PCR, 35 cycles of amplification with sense primer zc46098 (SEQ ID NO: 9) and antisense primer zc46099 (SEQ ID NO: 10) were used. Β-actin PCR was applied to the same amount of each template used for IL-17F amplification so that the template quality was uniform among all subjects. B-actin PCR included 25 cycles of PCR with sense primer zc44779 (SEQ ID NO: 11) and antisense primer zc44776 (SEQ ID NO: 12).

All four mice in the DerP1-sensitized, DerP1-administered treatment group (asthma simulation) showed strong IL-17F amplification. In contrast, it is weak from a negative control comprising 3 out of 3 subjects representing the DerP1 sensitized / PBS treated group and 5 out of 5 subjects in the PBS sensitized / PBS treated group IL-17F amplification was seen. B-actin amplification was as strong in the negative control as at least as much as the asthma mimic subjects, indicating that the weak negative control IL-17F amplification was not due to template problems.

(Example 2)
(IL-17A induces increased concentrations of IFN-γ and TNF-α in human peripheral blood mononuclear cells)
Human peripheral blood mononuclear cells (PBMC) were purified by ficoll density gradient centrifugation followed by medium alone, 50 ng / ml anti-human CD3 antibody or 50 ng / ml anti-human CD3 antibody and 1 g / ml anti-human. Incubate overnight at 37 ° C. in combination with CD28 antibody. Homogeneous cultures for each of these conditions were constructed and cytokines (none), 25 ng /
ml of human IL-17A or 25 ng / ml of human IL-17F is given. After 24 hours of incubation, supernatants from each culture are collected and assayed for cytokine content using a BD Bioscience human Th1 / Th2 cytometric bead array (CBA). We have found that cultures stimulated with anti-CD3 or anti-CD3 + anti-CD28 and supplemented with IL-17A have no added cytokines or IL-17
It was found to contain significantly elevated concentrations of IFN-γ and TNF-α for cultures that received F (3-5 fold increase each). Cultures that did not receive anti-CD3 stimulation did not show significant changes in cytokine concentrations. In addition, the addition of IL-17A results in IL-2, IL
It did not induce significant changes in other cytokines assayed with CBA, including -4, IL-5 and IL-10. This data shows that IL-17A, not IL-17F, is anti-C
FIG. 6 shows that production of IFN-γ and TNF-α can be increased in PBMC cultures stimulated with D3 or anti-CD3 + anti-CD28.

(Example 3)
(Anti-IL-17A and IL-17F antibodies reduce disease incidence and progression in a collagen-induced arthritis (CIA) mouse model)
(A) Collagen-induced arthritis (CIA) mouse model)
Ten week old male DBA / 1J mice (Jackson Labs) are classified into three groups of 13 mice / group. On day 21, mice were administered 50-100 μl intradermal tail injection of 1 mg / ml chicken type II collagen formulated in complete Freund's adjuvant (Cho
Prepared by ndrex, Redmond, WA) The same injection is administered except that it was prepared with incomplete Freund's adjuvant on Day 0, 3 weeks later. The antibodies of the invention (eg, cross-reactive antibodies or bispecifics) as intraperitoneal injections three times per week for four weeks at different time points ranging from day 0 to the day on which most mice exhibit moderate disease symptoms. Sex antibody). The administration group was administered at a dose of 10 or 100 μg of antibody per mouse, and the control group was PBS (Life Technologies, Rockville, Inc.) as a control vehicle.
MD) is administered. After the second collagen injection, mice begin to show signs of joint inflammation, and most mice develop inflammation within 1.5-3 weeks. By measuring the thickness of the foot using a caliper and assigning a clinical score (0-3) to each foot as described below (0
= Normal, 0.5 = toe inflammation, 1 = mild foot inflammation, 2 = moderate foot inflammation, and 3 = severe foot inflammation), the extent of disease in each foot is assessed.

(B) Disease monitoring)
Mice may begin to show signs of paw inflammation shortly after the second collagen injection, and some mice may begin to show signs of toe inflammation even before the second collagen injection. Most mice develop arthritis within 1.5 to 3 weeks of boost injection, but some may require longer periods. Usually, the incidence of disease in this model is 95-100%, and in a test with 40 mice, there are usually 0-2 non-responding mice (determined after 6 weeks of observation). Note that once inflammation begins, a general transient occurrence of fluctuating low-grade foot or toe inflammation can occur. For this reason, mice are not considered diseased until significant sustained paw swelling has developed.

To assess disease status in the paw, all mice are observed daily, which is done by assigning a qualitative clinical score to each paw. Every day, according to the state of clinical disease
Score 4 legs of each mouse. To determine the clinical score, the foot can be considered to have three areas: the toes, the foot itself (hand or foot) and the hand or ankle joint. Note the degree and severity of inflammation for these areas, including observation of each foot for swelling; redness of the toenails or toes; signs of evidence of edema or redness in any foot;
Includes signs of loss of fine anatomical sections of tendons or bones; wrist or ankle assessment for edema or redness; and attention to whether inflammation extends proximal to the leg. 1
A paw score of 2 or 3 is based first on the overall impression of severity and secondly on how many areas are involved. The scale used for clinical scoring is shown below.

(C) Clinical score)
0 = normal 0.5 = one or more toes involved, but only toes are inflamed 1 = slight inflammation involving the foot (one zone), toes (single or single) 2 = moderate inflammation in the foot and may include some toes and / or wrists / ankles (2 zones)
3 = severe inflammation in the foot, wrist / ankle and some or all toes (3 zones)
A definite disease is defined as a qualitative score of foot inflammation of rank 2 or higher that lasts for 2 consecutive days. As soon as a definite disease is present, a date is recorded and designated as the first day of the mouse for a “definite disease”.

Blood is collected throughout the study to monitor serum levels of anti-collagen antibodies and serum immunoglobulin and cytokine levels. Serum anti-collagen antibodies correlate well with disease severity. On day 21, mice are euthanized and blood is collected for serum and CBC. From each mouse, one affected paw is taken in 10% NBF for histological examination and one is frozen in liquid nitrogen for mRNA analysis and stored at -80 ° C. In addition, 1/2 RNA spleen, 1/2 thymus, 1/2 mesenteric lymph node, 1 liver lobe and left kidney were collected in RNAlater for RNA analysis and 1/1 for histological examination. Two spleens, 1/2 thymus, 1/2 mesenteric lymph node, remaining liver and right kidney are harvested in 10% NBF. Serum is collected for immunoglobulin and cytokine assays and stored at -80 ° C.

Groups of mice that are administered the antibodies of the invention at any time are characterized by the onset and / or delayed progression of paw inflammation. These results indicate that IL-17A and IL-17F cross-reactive and / or bispecific antibodies can reduce the inflammation and disease incidence and progression associated with this model. These results show that administration of such an antibody results in serum T
This is further supported by the observation that it resulted in reduced concentrations of NFa, IL-1b and anti-collagen antibodies.

Example 4
(Anti-IL-17A and IL-17F antibodies reduce disease incidence and progression in an inflammatory bowel disease (IBD) model)
This model is designed to show that cultured intestinal tissue from IBD patients produces a higher concentration of inflammatory mediators compared to tissue from healthy controls. This enhanced inflammatory mediator (IL-1b, IL-4, IL-5, IL-6, IL-8, IL-12, IL-1
3, IL-15, IL-17A and F, IL-18, IL-23, TNF-a, IFN
-G, including MIP family members, MCP-1, G- and GM-CSF,
Production of (but not limited to) cause the symptoms and pathologies associated with IBD, such as Crohn's disease (CD) and ulcerative colitis (UC), through its effects on the inflammatory pathway and activation of downstream effector cells. Become. Second, these pathways and components result in tissue / cell damage / destruction observed in vivo. This model can therefore simulate aspects of this enhanced inflammatory mediator of IBD. Furthermore, when intestinal tissue from a healthy control or human intestinal epithelial cell (IEC) system is cultured in the presence of these inflammatory components, evidence of inflammatory pathway signaling and tissue / cell damage can be observed.

Therapies that can be effective in human IBD in vivo can be successful in the ex vivo or IEC model by inhibiting and / or neutralizing the production and / or presence of inflammatory mediators.

In this model, human intestinal tissue was collected from IBD patients or intestinal biopsies, healthy controls undergoing resection or postmortem tissue collection, Alexakis et al. (Gut 53: 85-90;
2004). The sample is gently washed with a large volume of PBS under aseptic conditions, and then the tissue section is cultured in the presence of complete tissue culture medium (added with antibiotics to prevent bacterial overgrowth). Samples from the same pool of tissue sections are treated with one of the following: vehicle (PBS); recombinant human (rh) IL-17A; rhIL-17F; or r
hIL-17A + rhIL-17F. In addition, they are treated with or without the antibodies of the invention (eg, cross-reactive antibodies or bispecific antibodies). This experimental protocol is continued for testing on the human IEC system, except that cells are passaged from existing stock. After changing the culture time (from 1 hour to several days), the supernatant is collected and analyzed for the concentration of inflammatory mediators including the above list. Sample from IBD patient or rh
In samples treated with IL-17A and / or F, the concentrations of inflammatory cytokines and chemokines are increased compared to untreated healthy control tissue samples. Addition of the antibodies of the present invention significantly reduces the production of inflammatory mediators and can therefore be expected to be effective in human IBD.

(Example 5)
(Anti-IL-17A and IL-17F antibodies reduce disease incidence and progression in multiple sclerosis (MS) model)
Multiple sclerosis (MS) is a complex disease that is thought to be mediated by multiple factors, including inflammatory infiltration of lymphocyte cells and mononuclear cells and the presence of demyelination throughout the CNS. Microglia are macrophage-like cells that gather in the central nervous system (CNS)
Activates simultaneously with injury or infection. Microglia have been implicated as playing an important role in a variety of CNS diseases, including MS, and can be used to study disease initiation, progression mechanisms and therapies (Nagai et al., Neurobiol Dis 8:
1057-1068; 2001; Olson et al., J Neurosci Methods.
128: 33-43; 2003). Thus, immortalized human microglial cell lines and / or established human astrocyte cell lines can be used to study some of the effects of inflammatory mediators on these cell types and their neutralization potential. it can. Inflammatory mediators (IL-1b, IL-6, IL-8, IL-12, IL-13, IL-15,
Including but not limited to IL-17A and F, IL-18, IL-23, TNF-a, IFN-g, MIP family members, RANTES, IP-10, MCP-1, G- and GM-CSF Not) can cause symptoms and pathologies associated with MS via its effects on the inflammatory pathway and activation of downstream effector cells.

To assess the pro-inflammatory effects of IL-17A and IL-17F and the ability of the antibodies of the invention to neutralize or reduce these effects, cultured glial cells are treated with one of the following: vehicle; rhIL-17A; rhIL-17F; rhIL-17A + IL-17F. In addition, they are processed with or without the antibodies of the present invention. After varying the culture time (from 1 hour to several days), supernatants and cells are collected and analyzed for the concentration and / or expression of inflammatory mediators including the above list. R compared to cultures treated with vehicle alone
In the presence of hIL-17A and / or IL-17F, the concentrations of inflammatory cytokines and chemokines are increased. The addition of the antibody of the present invention significantly reduces the production and expression of inflammatory mediators and can therefore be expected to be effective in the inflammatory aspect associated with human MS.

(Example 6)
(Anti-IL-17A and IL-17F antibodies are associated with rheumatoid arthritis (RA) and osteoarthritis (
OA) Reduce disease incidence and progression in the model)
Human synovial cultures (including synovial macrophages, synovial fibroblasts and articular chondrocytes) and explants from RA and OA patients have higher concentrations compared to cultures / explants from healthy controls This model is designed to show that it produces inflammatory mediators. This enhanced inflammatory mediator (Oncostatin M, IL-1b, IL-6, IL-8, IL
-12, IL-15, IL-17A and F, IL-18, IL-23, TNF-a, I
FN-g, IP-10, RANTES, RANKL, MIP family members, MCP
-1, G- and GM-CSF, including but not limited to nitric oxide, etc.) through its effects on inflammatory pathways and activation of downstream effector cells, and the symptoms associated with RA and OA and Causes pathology. In turn, these pathways and components result in inflammatory infiltrates, cartilage and matrix loss / destruction, bone loss and prostaglandin and cyclooxygenase upregulation. Thus, this model can simulate the destructive inflammatory aspects of RA and OA in in vitro and ex vivo tests. In addition, explants and synovial cultures from healthy controls were obtained from these multiple inflammatory components (eg, oncostatin M, TNF-a, IL-1b, IL-6, IL
When cultured in the presence of -17A and F, IL-15, etc.), inflammatory pathway signaling can be observed. Therapies that can be effective in human RA in vivo can be successful in the in vitro and ex vivo models by inhibiting and / or neutralizing the production and / or presence of inflammatory mediators.

In this model, human synovial explants are taken from RA, OA patients or healthy controls undergoing joint replacement or post-mortem tissue collections, and Wooley and Tetlow (Arthri
tis Res 2: 65-70; 2000) and van't Hof et al. (Rheu).
matology 39: 1004-1008; 2000).
Also examined are cultures of synovial fibroblasts, synovial macrophages and articular chondrocytes. Homogeneous samples were one of the following: vehicle (PBS); recombinant human (rh) IL-17A; rhIL-17
F; or treated with rhIL-17A + rhIL-17F, some samples are Oncostatin M, TNF-a, IL-1b, IL-6, IL-17A, IL-17F and IL-1
Includes 5 different combinations. In addition, they are processed with or without the antibodies of the present invention. After changing the culture time (from 1 hour to several days), the supernatant is collected and analyzed for the concentration of inflammatory mediators including the above list. Samples from patients with RA or OA or rhI
In samples treated with L-17A and / or F (alone or in combination with other inflammatory cytokines), the concentrations of inflammatory cytokines and chemokines are compared to untreated healthy control explants or untreated cell cultures. To rise. The addition of the antibodies of the present invention significantly reduces the production of inflammatory mediators and can therefore be expected to be effective in human RA and OA.

(Example 7)
(Expression of IL-17A and IL-17F in a mouse disease model)
Using techniques known for the expression of IL-17A and IL-17F, the disease (asthma, D
Four mouse models of SS colitis, atopic dermatitis and experimental allergic encephalomyelitis were analyzed.

In an asthma model, IL-17A and IL-17F are expressed at very low to undetectable levels in lung, spleen, lung draining lymph nodes and lung infiltrating cells in affected and unaffected mice.

Contrary to the asthma model, IL-17A and IL-17F were highly upregulated in affected mice in the proximal and distal colon in the DSS colitis model, but not upregulated in normal mice. Neither cytokine was significantly upregulated in mesenteric lymph nodes. In addition, upregulation of both cytokines was found in the situation of acute DSS-induced colitis, but not in chronic DSS-induced colitis.

In atopic dermatitis, IL-17A mRNA could not be detected. IL-17F was found to be expressed in the skin and cutaneous draining lymph nodes, but did not appear to be significantly controlled in the disease.

In experimental allergic encephalomyelitis, IL-17A and IL-17F appeared to be upregulated in the spinal cord in affected mice, but not in healthy mice. Although IL-17F may be highly expressed in lymph nodes compared to the spinal cord, expression in lymph nodes was not controlled by the disease. However, the overall expression level in these tissues was quite low.

In summary, expression of IL-17A and IL-17F appears to be disease-controlled in the context of DSS-induced colitis and experimental allergic encephalomyelitis models, but not in asthma or atopic dermatitis. It wasn't.

(Example 8)
(Construction of E. coli expression vectors for human IL-17A and F)
(IL-17A)
(Construction of pCHAN28)
A human IL-17A expression construct was made as follows. The native IL-17A sequence was generated by PCR amplification using two oligonucleotide primers zc48,686 (SEQ ID NO: 13) and zc48,685 (SEQ ID NO: 14). PCR conditions were as follows: 25 cycles of 94 ° C. for 30 seconds, 50 ° C. for 30 seconds and 72 ° C. for 1 minute; then soaked at 4 ° C. The DNA fragment was precipitated with 2 volumes of absolute ethanol. 10 μL of pellet
Resuspended in H ₂ O, used in recombination into SmaI cut recipient vector pTAP238, to produce the construct encoding human IL-17A. The resulting clone is p
Designated as CHAN28. They were designated as NotI (10 μL DNA, 5 μL buffer 3
New England BioLabs, 2 μL Not I, 33 μL H ₂ O
Digested at 37 ° C. for 1 hour and T4 DNA ligase buffer (7 μL pre-digested, 2 μl
L 5 × buffer, 1 μL T4 DNA ligase). In this step, the yeast sequence CEN-ARS was removed to simplify the vector. To confirm the absence of the yeast sequence, an aliquot of DNA was digested with Pvu2 and PstI. Human IL-1
The 7A expression construct was transformed into E. coli. E. coli strain W3110 was transformed. The polynucleotide sequence of human IL-17A is shown in SEQ ID NO: 5 and the corresponding encoded IL-17A polypeptide is shown in SEQ ID NO: 6.

(IL-17F)
(Construction of pTAP419)
A human IL-17F expression construct was made as follows. The native IL-17F sequence was generated by PCR amplification using two oligonucleotide primers zc42,852 (SEQ ID NO: 15) and zc42,854 (SEQ ID NO: 16). PCR conditions were as follows: 25 cycles of 94 ° C. for 30 seconds, 50 ° C. for 30 seconds and 72 ° C. for 1 minute; then soaked at 4 ° C. The DNA fragment was precipitated with 2 volumes of absolute ethanol. 10 μL of pellet
Resuspended in H ₂ O, used in recombination into SmaI cut recipient vector pTAP238, to produce the construct encoding human IL-17F. The resulting clone is p
Designated as TAP419. They were designated as NotI (10 μL DNA, 5 μL buffer 3
New England BioLabs, 2 μL Not I, 33 μL H ₂ O
Digested at 37 ° C. for 1 hour and T4 DNA ligase buffer (7 μL pre-digested, 2 μl
L 5 × buffer, 1 μL T4 DNA ligase). In this step, the yeast sequence CEN-ARS was removed to simplify the vector. To confirm the absence of the yeast sequence, an aliquot of DNA was digested with Pvu2 and PstI. Human IL-1
The 7F expression construct was transformed into E. coli. E. coli strain W3110 was transformed. The polynucleotide sequence of human IL-17F is shown in SEQ ID NO: 7, and the corresponding encoded IL-17F polypeptide is shown in SEQ ID NO: 8.

Example 9
(Expression of IL-17A in E. coli)
An expression plasmid containing pIL 17A CH6 was constructed by homologous recombination using human IL 17A CH6 and the expression vector pZMP20. Primer zc48895
Fragments were generated by PCR amplification using (SEQ ID NO: 17) and zc48893 (SEQ ID NO: 18). The PCR fragment IL 17A CH6 contains an IL 17A coding region fused to a 6xHis tag at the C-terminus made using human IL 17A as a template. The fragment contains a 5 ′ overlap with the pZMP20 vector sequence and a 3 ′ overlap with the pZMP20 vector at the insertion point. The PCR conditions used were as follows: 94 ° C for 5 minutes for 1 cycle; 94 ° C for 1 minute, then 55 ° C for 2 minutes, then 7
35 cycles for 3 minutes at 2 ° C; 1 cycle for 10 minutes at 72 ° C. 1% of the PCR reaction mixture
Run on an agarose gel and use QIAquick ™ gel extraction kit (Qiagen,
A band corresponding to the size of the insert was gel extracted using catalog number 28704).

Plasmid pZMP20 contains a CMV promoter, multiple restriction sites for insertion of coding sequences, an otPA signal peptide sequence (in this case, removed by recombination); an in-sequence ribosome entry site (IRES) element and membrane from poliovirus The extracellular domain of CD8 cleaved at the C-terminus of the penetrating domain; E. E. coli replication start point; SV
A mammalian selectable marker expression unit comprising a 40 promoter, an enhancer and an origin of replication, a DHFR gene and an SV40 terminator; cerevis
It is a mammalian expression vector containing an expression cassette having URA3 and CEN-ARS sequences necessary for selection and replication in iae. Plasmid pZMP20 was cut with BglII (creating an insertion point) and then recombined into yeast along with the PCR fragment. 100 microliters of competent yeast (S. cerevisiae) cells were independently mixed with 10 μl of insert DNA and 100 ng of cleaved pZMP20 vector, and the mixture was
. Transfer to a 2 cm electroporation cuvette. 0.75 kV (5 kV / cm), ∞ Ohm and 25 μF power supply (BioRad Laboratories, Hercules, CA)
) An electrical pulse was applied to the yeast / DNA mixture using the settings. 600 μl of 1.2 M sorbitol was added to the cuvette and the yeast was plated on two URA-D plates in 100 μl and 300 μl aliquots and incubated at 30 ° C. About 72 hours later, Ura ⁺ yeast transformed cells from a single plate were resuspended in 1 ml H ₂ O and spun briefly to pellet the yeast cells. Cell pellets were treated with 0.5 ml lysis buffer (2% Trito
n X-100, 1% SDS, 100 mM NaCl, 10 mM Tris (pH 8.0)
) And resuspended in 1 mM EDTA). 500 microliters of lysis mixture
Eppe containing 50 μl acid washed glass beads and 300 μl phenol-chloroform
In addition to the ndorf tube, vortexed for 3 minutes and spun at maximum speed in an Eppendorf centrifuge for 5 minutes. 300 microliters of the aqueous phase was transferred to a fresh tube and the DNA was precipitated with 600 μl ethanol (EtOH) and then centrifuged at maximum speed for 30 minutes. The tube was decanted and the pellet was washed with 1 mL of 70% ethanol.
The tube was decanted and the DNA pellet was resuspended in 30 μl TE.

Electrocompetent E using 5 μl yeast DNA prep and 50 μl cells
. E. coli host cells (DH12S) were transformed. 2.0 kV, 25 μF and 4
An electrical pulse was applied to the cells at 00 ohms. After electroporation, 1 ml SOC (2% Bac
to ™ tryptone (Difco, Detroit, MI), 0.5% yeast extract (Difco), 10 mM NaCl, 2.5 mM KCl, 10 mM MgCl ₂ ,
10 mM MgSO ₄ , 20 mM glucose), then 50 μl and 200 μl
Two LB AMP plates (LB broth (Lennox), 1.8% in aliquots)
Cells were plated on Bacto ™ agar (Difco), 100 mg / L ampicillin).

Three clone inserts for the construct were subjected to sequence analysis and one clone for each construct containing the correct sequence was selected. Commercially available kit (Q
Larger scale plasmid DNA was isolated using the IAGEN Plasmid Mega Kit, Qiagen, Valencia, Calif.).

Expression of pIL 17A CH6 was achieved by transient transfection. Six 1000 mL flasks were seeded with 250 mL of 293F cells at 1E6 c / mL and set aside. 20 mL OptiMEM (Invitrogen, catalog number 319)
85-070) was placed in each of two 50 mL conical tubes. 2 mL of Lipofectamine 2000 (Invitrogen, catalog number 11668-019)
Mix into one of the 50 mL conical tubes containing MEM and add 1.5 mg IL 17A CH6
The pZMP20 expression plasmid was placed in the other tube. The tube was inverted several times and allowed to incubate for 5 minutes at room temperature. The two tubes were then mixed, inverted several times and allowed to incubate for 30 minutes at room temperature. The DNA-Lipofectamine 2000 mixture was then evenly distributed to each of the 6 flasks while rotating the cell culture. Next, 37 ° C, 6%
The flask was placed in an incubator on a shaker with CO ₂ and shaken at 120 RPM.
The culture was harvested after 96 hours.

(Example 10)
(Expression of IL-17F in E. coli)
An expression plasmid containing pIL 17F CH6 was constructed by homologous recombination using human IL 17F CH6 and expression vector pZMP20. Primer zc48894
Fragments were generated by PCR amplification using (SEQ ID NO: 19) and zc48892 (SEQ ID NO: 20). Human IL 17F CH6 contains an IL 17F coding region fused to a 6xHis tag at the C-terminus, made using a previously created clone of human IL 17F as a template. The fragment contains a 5 ′ overlap with the pZMP20 vector sequence and a 3 ′ overlap with the pZMP20 vector at the insertion point. The PCR conditions used were as follows: 1 cycle at 94 ° C. for 5 minutes; 1 minute at 94 ° C., then 5
35 cycles of 2 minutes at 5 ° C, then 3 minutes at 72 ° C; one cycle of 10 minutes at 72 ° C. P
The CR reaction mixture was run on a 1% agarose gel and a band corresponding to the size of the insert was gel extracted using a QIAquick ™ gel extraction kit (Qiagen, catalog number 28704).

Plasmid pZMP20 contains a CMV promoter, multiple restriction sites for insertion of coding sequences, an otPA signal peptide sequence (in this case, removed by recombination); an in-sequence ribosome entry site (IRES) element and membrane from poliovirus The extracellular domain of CD8 cleaved at the C-terminus of the penetrating domain; E. E. coli replication start point; SV
A mammalian selectable marker expression unit comprising a 40 promoter, an enhancer and an origin of replication, a DHFR gene and an SV40 terminator; cerevis
It is a mammalian expression vector containing an expression cassette having URA3 and CEN-ARS sequences necessary for selection and replication in iae.

Plasmid pZMP20 is cut with BglII (creating an insertion point) and then PC
Recombined into yeast along with the R fragment. 100 microliters of competent yeast (S. ce
cells were independently mixed with 10 μl of insert DNA and 100 ng of cut pZMP20 vector, and the mixture was transferred to a 0.2 cm electroporation cuvette.
0.75 kV (5 kV / cm), ∞ Ohm and 25 μF power supply (BioRad Lab
(oratories, Hercules, CA) settings were used to apply electrical pulses to the yeast / DNA mixture. 600 μl of 1.2 M sorbitol is added to the cuvette and the yeast is plated on two URA-D plates in 100 μl and 300 μl aliquots, 30 ° C.
Incubated with. About 72 hours later, Ura ⁺ yeast transformed cells from a single plate were resuspended in 1 ml H ₂ O and spun briefly to pellet the yeast cells. Cell pellets were treated with 0.5 ml lysis buffer (2% Triton X-100, 1% SDS, 100 m
Resuspended in M NaCl, 10 mM Tris (pH 8.0), 1 mM EDTA). 500 microliters of lysis mixture was added to 250 μl acid washed glass beads and 30
In addition to an Eppendorf tube containing 0 μl phenol-chloroform, vortexed for 3 minutes and spun for 5 minutes in an Eppendorf centrifuge at maximum speed. 300
Transfer microliters of the aqueous phase to a fresh tube and transfer the DNA to 600 μl ethanol (Et
OH) and then centrifuged at maximum speed for 30 minutes. The tube was decanted and the pellet was washed with 1 mL of 70% ethanol. The tube was decanted and the DNA pellet was resuspended in 30 μl TE.

Electrocompetent E using 5 μl yeast DNA prep and 50 μl cells
. E. coli host cells (DH12S) were transformed. 2.0 kV, 25 μF and 4
An electrical pulse was applied to the cells at 00 ohms. After electroporation, 1 ml SOC (2% Bac
to ™ tryptone (Difco, Detroit, MI), 0.5% yeast extract (Difco), 10 mM NaCl, 2.5 mM KCl, 10 mM MgCl ₂ ,
10 mM MgSO ₄ , 20 mM glucose), then 50 μl and 200 μl
Two LB AMP plates (LB broth (Lennox), 1.8% in aliquots)
Cells were plated on Bacto ™ agar (Difco), 100 mg / L ampicillin).

Three clone inserts for the construct were subjected to sequence analysis and one clone for each construct containing the correct sequence was selected. Commercially available kit (Q
Larger scale plasmid DNA was isolated using the IAGEN Plasmid Mega Kit, Qiagen, Valencia, Calif.).

Expression of human IL 17F CH6 was achieved by transient transfection. 6
Two 1000 mL flasks were seeded with 250 mL of 293F cells at 1E6 c / mL,
I put it aside. 20 mL OptiMEM (Invitrogen, catalog number 31
985-070) was placed in each of two 50 mL conical tubes. 2 mL of Lipofectamine 2000 (Invitrogen, catalog number 11668-019)
Mix into one of the 50 mL conical tubes containing iMEM and add 1.5 mg IL 17F CH6
The pZMP20 expression plasmid was placed in the other tube. The tube was inverted several times and allowed to incubate for 5 minutes at room temperature. The two tubes were then mixed, inverted several times and allowed to incubate for 30 minutes at room temperature. The DNA-Lipofectamine 2000 mixture was then evenly distributed to each of the 6 flasks while rotating the cell culture. Next, 37 ° C., 6
The flask was placed in an incubator on a shaker with% CO ₂ and shaken at 120 RPM. The culture was harvested after 96 hours.

(Example 11)
Characterization of monoclonal antibodies that bind to IL-17A and IL-17F
Two assays are performed on antibodies containing the supernatant from the best first clone in each set. First, a mouse-IgG ELISA kit (Catalog No. 1 333 15
1 (Roche Applied Science) is used to quantify the IgG concentration in each supernatant used in the neutralization assay. This allowed the quantification of specific neutralizing activity on each supernatant, thus identifying the hybridoma producing the most potent anti-IL 17A and IL-17F and IL-17A + IL-17F neutralizing mAbs.
From this analysis, the most potent mAb is selected for further characterization. Second, Biaco
preliminary epitope specificity for the supernatant using a re 1000 surface plasmon resonance device (
A “binning”) test is performed.

(Competitive epitope binding)
To assess the functional binding properties of monoclonal antibodies to IL-17A and IL-17F, epitope binning and Western blot studies are performed. The binning test is completed to determine antibodies that bind to different epitopes or antigenic determinants on IL-17A or IL-17F. IL-17A or I
Monoclonal antibodies that bind to the same or similar epitopes on L-17F cannot each bind simultaneously and are functionally classified into a single family or “bin”. Monoclonal antibodies that bind to different epitopes on IL-17A or IL-17F can bind simultaneously and are classified into separate families or “bins”. Testing was performed using a Biacore 1000 ™ instrument. Biaco
re is just one of a variety of assay formats that are epitope bin bins of routinely used monoclonal antibodies. Many references (eg, The Epit
ope Mapping Protocols, Methods in Molecule
ar Biology, Vol. 6 6 Glenn E. et al. Morris (ed.) Describes alternative methods that can be used (by those skilled in the art) to “bin” a monoclonal antibody, consistent with the binding properties of monoclonal antibodies to IL-17A and IL-17F. It can be expected to obtain sexual information. Epitope binning (binni
ng) The test consists of soluble native antigen, E. coli. E. coli-derived or mammalian-derived recombinant Il-
Performed with 17A and IL-17F.

(Western blot)
The ability of a hybridoma-derived monoclonal antibody to bind to and detect denatured / reduced / denatured IL-17A and / or IL-17F is also assessed using a Western blot format.

(Epitope binning)
(A) Material and method)
Biacore 1000 ™ system (Biacore, Sweden Up
The epitope binning test is performed in salla. The method is programmed using Method Definition Language (MDL) and executed using Biacore control software v1.2. Polyclonal goat anti-mouse IgG Fc antibody (Jackson ImmunoResearch)
h Laboratories, West Grove, PA) from Biacore C
Covalently immobilized on the M5 sensor chip and used to bind (capture) the primary monoclonal antibody in a series of tests. Next, polyclonal IgG Fc fragment (
Jackson ImmunoResearch Laboratories, Wes
t Grove, PA) is used to block unoccupied Fc binding sites on the chip. Next, IL-17A or IL-17F is injected and specifically bound to the captured primary monoclonal antibody. The Biacore instrument measures the mass of protein bound to the sensor chip surface, thus verifying the binding of the primary antibody and IL-17A or IL-17F antigen for each cycle. After binding of the primary antibody and antigen to the chip, a series of test monoclonal antibodies are injected as secondary antibodies and allowed to bind to the pre-bound antigen. If the secondary monoclonal antibody can bind to the IL-17A or IL-17F antigen simultaneously with the primary monoclonal antibody, an increase in mass on the surface of the chip, ie binding, is detected. However, if the secondary monoclonal antibody cannot bind to the IL-17A or IL-17F antigen at the same time as the primary monoclonal antibody, no additional mass, i.e., binding is detected. To determine the level of background (no binding) signal, each monoclonal antibody is tested against itself and used as a negative control.

Each purified monoclonal antibody is tested as a primary antibody in combination with a selected panel of the entire panel. All purified monoclonal antibodies are tested at equal concentrations. The goat anti-mouse IgG Fc capture antibody on the chip is regenerated with 20 mM HCl between cycles. A control cycle is performed to show the lack of response of the secondary antibody in the absence of primary antibody or antigen. BioEvaluation 3.2 Edit data using RCI software and load into Excel ™ for data processing.

(B) Western blot)
Western blot format is used to assess the ability of monoclonal antibodies from each clone to detect Il-17A or IL-17F from two sources, denatured, reduced / denatured. Rabbit polyclonal antibodies known to detect IL-17A and / or IL-17F in a Western blot format are used as positive controls.

(Materials and methods)
IL-17A and IL-17F antigens are obtained from two sources: IL-17A and I
L-17F to E.I. produced in E. coli or mammalian cells, eg, 293 cells (described herein) and purified. Aliquots (100 ng / lane) of each antigen with 4-12% NuPAGE Bis-Tris gels in non-reducing or reducing sample buffer (Invitrogen) with molecular weight standards (SeeBlue; Invitrogen) (
Invitrogen, Carlsbad, Calif.) And electrophoresed in 1 × MES running buffer (Invitrogen). After electrophoresis, the protein was transferred from the gel to a 0.2 μm nitrocellulose membrane (Invitrogen). Nitrocellulose blots were prepared using Western A buffer (ZymoGenetics, 50 mM).
Tris (pH 7.4), 5 mM EDTA, 150 mM NaCl, 0.05% Ig
block overnight in 2.5% non-fat dry milk in epal, 0.25% gelatin), then cut into sections and each antibody (0.2 μg / mL of each monoclonal antibody in Western A buffer or 0. 5 μg / mL rabbit polyclonal antibody). Next, a secondary antibody conjugated to horseradish peroxidase; sheep anti-mouse IgG-HRP
(Amersham: Piscataway, NJ) is used to probe for monoclonal antibodies, and a donkey anti-rabbit IgG-HRP (Amersham) is used to search for blots. Next, chemiluminescence reagent (Lumi-Light Plus)
Reagent: Roche, Mannheim, Germany) was used to detect the bound antibody, and the blot image was analyzed using a Lumi-Imager (Mannheim-Boehringer).
Or X-ray film (Kodak).

(Example 12)
(Purification of C-terminal His-tagged IL17A protein from 293 transient cell line)
(Mouse IL-17A)
The supplied medium was adjusted to 25 mM imidazole and 500 mM NaCl (pH 7.5) (total volume 1.41 L) by adding solids (Fluka and JT Baker, respectively). The expression of the his-labeled target was analyzed by Western blot, RP-HPLC (1.11 mg / L). The conditioned medium was incubated overnight at 4 ° C. with Ni NTA His.
Bind Superflow (Novagen) column (5 mL, 1 cm diameter, Mil
Lipore)). The flow-through was examined by RP-HPLC and Western blot so that there was no IL 17A target substance. 50 mM NaPO4, 25 mM imidazole, 0.5 M NaC until UV baseline at A280 nm stabilizes
The Ni NTA column was washed with 1 (pH 7.5). The column was eluted in two steps:
The buffer was adjusted to 45 mM and 500 mM imidazole using a 500 mM imidazole stock. Elution fractions were examined by silver staining analysis and examined for fractions containing pooled target material (500 mM step elution). Ni NTA pool to RP-HPL
Analyzed by C. Ni NTA pool is converted to 10 kD MWCO Ultracel membrane (
Millipore) to 2 mL and 50 mM Na at 1.02 mL / min.
Superdex® 7 flowing in PO4, 109 mM NaCl, pH 7.3
Injection onto 5 columns (GE Healthcare, 12/60 mm). Two peaks were separated and analyzed by silver staining. Mouse IL 17A was well separated from the remaining contaminating protein. Fractions containing pure target material pooled using a 10 kDa MWCO Ultracel membrane (Millipore) were again concentrated to 2.0 mL, filtered at 0.22 um and aliquoted.

(Human IL-17A)
The supplied medium was adjusted to 25 mM imidazole and 500 mM NaCl (pH 7.5) (total volume 1.41 L) by adding solids (Fluka and JT Baker, respectively). The expression of the his-labeled target substance was analyzed by Western blot using A1022G as a standard, and further by RP-HPLC (3.19 mg / L). The conditioned medium was incubated overnight at 4 ° C. with Ni NTA His Bind Superflow (No
Vagen) column (5 mL, 1 cm diameter, Millipore). I
The flow-through was examined by RP-HPLC and Western blot so that there was no L17A target substance. 50 mM Na until the UV baseline at A280 nm stabilizes
The Ni NTA column was washed with PO4, 25 mM imidazole, 0.5 M NaCl (pH 7.5). The column was eluted in two steps: the buffer was adjusted to 45 mM and 500 mM imidazole using a 500 mM imidazole stock. Elution fractions were examined by silver staining analysis and examined for fractions containing pooled target material (500 mM step elution). Ni by RP-HPLC using A1022F as standard
The NTA pool was analyzed. Ni NTA pool with 10kD MWCO Ultracel
Concentrate to 5 mL against membrane (Millipore) and 50 mM at 2.71 mL / min
Injection onto a Superdex® 75 column (GE Healthcare, 26/60 mm) flowing with NaPO4, 109 mM NaCl, pH 7.3. Two peaks were separated and analyzed by silver staining. Mouse IL 17A was well separated from the remaining contaminating protein. Fractions containing pure target material pooled using a 10 kDa MWCO Ultracel membrane (Millipore) were again concentrated to 9.0 mL, filtered at 0.22 um and aliquoted.

(Example 13)
(Purification of C-terminal His-tagged IL17F protein from 293 transient cell line)
IMAC affinity capture in 293F medium from transient expression. 25 mM medium
Imidazole; 25 mM NaPhos; adjusted to 400 mM NaCl and pH 7.5. The medium thus prepared was mixed with Qiagen NTA Super equilibrated with 25 mM NaPhos; 25 mM imidazole; 500 mM NaCl (pH 7.5).
It was loaded at 1 ml / min on a 5 ml layer of flow (1 cm diameter). After loading is complete, the column is washed with 20 CV equilibration buffer followed by elution buffer and 25 mM NaPhos; 5
10C formed with 00 mM imidazole; 500 mM NaCl, pH 7.5
Elute with a V gradient. Fractions are assayed for product by RP-HPLC, pooled,
Concentrated for SEC step. Concentrate the pool from the IMAC step to 50 mM N
aPhos; Pharmacia S equilibrated with 109 mM NaCl (pH 7.2)
Injected onto an upperdex 75 SEC column. A large symmetrical peak eluting at approximately 0.5 CV contains the product. Samples were pooled for aliquoting and sterile filtered to 0.2 microns.

(Example 14)
(Efficacy of antibodies that bind to IL-17A and IL-17F in human IBD samples with epithelial barrier function)
Maintaining the integrity of the epithelial barrier is an important factor in maintaining a healthy gastrointestinal tract. Experimental evidence suggests that the leaky nature of the epithelial barrier in the intestine can contribute to the development of IBD. Normally, immune cells in the lamina propria interact with intestinal epithelial cells by cell-cell contact or production of soluble factors to maintain immune surveillance and contribute to the integrity of the epithelial barrier. However, persistent or dysregulated immune-mediated inflammation can cause impairments in epithelial barrier cell integrity and function. The following test shows T cell-derived I for epithelial barrier integrity.
It is designed to measure the direct action of L-17A and / or IL-17F.

In this example, an intestinal epithelial cell line such as Caco-2 cells is differentiated onto a semipermeable membrane and IBD
Co-culture on the basal side with T cells or monocytes derived from biopsies from patients or normal patients. Epithelial monolayer integrity is monitored over time using assessment of monolayer resistance to transepithelial electrical resistance or dye diffusion. Decreased monolayer transepithelial resistance in the co-culture may indicate monolayer disruption induced by T cell or monocyte activity in the co-culture. Inhibitors of IL-17A and IL-17F, such as antibodies of the present invention, were used to determine the relative contribution of IL-17A and IL-17F to epithelial monolayer disruption, and IL-17A and IL-17
It may be possible to test whether inhibitors of F may be effective in maintaining the integrity of the epithelial barrier. Prevention of disruption of the epithelial monolayer induced by activated T cells by such molecules is
It may suggest that the antibodies of the present invention may be effective in the treatment of IBD in humans.

A co-culture system can also be made using a monolayer formed by primary epithelium from an IBD patient, and these cells are compared to epithelial cells from healthy patients, IL-17A and IL-17F.
To determine whether it is more sensitive to. If so, these data are IL-17.
It may suggest that inhibition of A and IL-17F may be a suitable strategy for the treatment of IBD.

(Example 15)
(Effects of IL-17A and IL-17F on lamina propria T cells and monocytes / macrophages from normal and human IBD samples)
Dysregulation or persistent immune-mediated inflammation can lead to symptoms and pathologies associated with IBD through permanent damage leading to tissue damage or inappropriate or prolonged immune responses. In this model, IL-17A and IL that may be present in the cytokine environment adjacent to the intestinal tissue
Possible downstream consequences of exposure of disease-related T cells and monocytes to -17F can be determined.

Therapies that can be effective in human IBD in vivo are inflammatory mediators (I
L-1b, IL-4, IL-5, IL-6, IL-8, IL-12, IL-13, IL-
15, IL-17A and F, IL-18, IL-23, TNF-a, IFN-g, MI
By inhibiting and / or neutralizing the production and / or presence of P family members, including but not limited to MCP-1, G- and GM-CSF, etc. sell.

In this model, T cells and monocytes / macrophages are isolated from the biopsy sample by carefully chopping the biopsy sample with scissors in HBSS, treated with collagenase and dispase II, and 37 ° C. in a shaker. Incubate for 1 hour. Cell suspension
Filter through nylon mesh to remove debris and cell clumps and wash multiple times in HBSS. T cells and macrophages / monocytes can be isolated using direct cell sorting or bead depletion / enrichment protocols. Incubate the isolated cells in the presence of IL-17A and IL-17F. This induces the production of inflammatory mediators by T cells and monocytes / macrophages, or distorts the subsequent T cell response to a highly pro-inflammatory response. A comparison can be made between the type of inflammatory mediator produced by cells from IBD patients and the type of inflammatory mediator produced by cells from normal patients, and T cells and monocytes / macrophages from IBD patients are It can be suggested that in the presence of IL-17A and IL-17F, a more pro-inflammatory profile is produced. The addition of an antibody of the invention that neutralizes the production of downstream inflammatory mediators induced by IL-17A and IL-17F suggests that such antibodies may be effective in the treatment of IBD patients.

(Example 16)
Irritable bowel syndrome (“IBS”): Efficacy of antibodies that bind IL-17A and IL-17F in pathogenesis directed at the CNS
A model with an emphasis on pathogenesis targeted to primary CNS, using stress stimuli to induce symptoms characteristic of IBS. The neonatal psychosocial stress model mimics some of the clinical features associated with IBS patients, including visceral hyperalgesia, diarrhea and stress sensitivity. Daily separation from the litter's mother for 180 minutes daily for 4-18 days after birth results in changes in the mother's behavior and significantly reduces the time for licking / grooming behavior. Stress on the neonate results in permanent changes in the CNS, resulting in stress-induced visceral pain and altered somatic sensibility. Colonic motor function in response to stress is enhanced in these animals, and preliminary data show evidence of increased intestinal permeability (Mayer et al., 2002).
). Efficacy in this IBS animal model can be determined by treatment with the antibodies of the present invention and subsequent analysis of colonic motor function, epithelial permeability and response to stress stimuli.
A decrease in the incidence of symptoms after treatment with these inhibitors may suggest a potential efficacy in the treatment of IBS.

(Example 17)
Irritable bowel syndrome (“IBS”): Effectiveness of antibodies that bind to IL-17A and IL-17F in stress-inducing factors directed to the primary intestine
This is a model that focuses on stress-inducing factors (ie, intestinal inflammation, infection or physical stress) directed at the primary intestine. Animal studies have shown that mild inflammation or immune activation can be the basis for changes in motility and / or intestinal afferent and epithelial function (Mayer et al., 2002). In this model, daily colonic irritation is produced in neonatal animals (8-21 days old) in the form of intracolonic injections of mustard oil every day. Mustard oil is a neurostimulant and has been shown to induce visceral hyperalgesia following intracolonic administration. This model mimics important features of IBS including visceral hypersensitivity and changes in bowel habits. Animals also exhibit diarrhea or constipation, an important feature of IBS patients (Mayer et al., 2002; K
imball et al., 2005). To determine changes in the onset of symptoms associated with this model,
The antibodies of the invention can be delivered. Reduction in the incidence or magnitude of visceral hypersensitivity and gut motility changes after treatment with our inhibitors may suggest that these molecules may be effective in the treatment of IBS.

(Example 18)
(Preparation of IL-17A / F antibody)
(A) Capture assay)
Anti-human IL-17F or anti-human IL-in antiserum using a capture ELISA assay
The ability of the 17A antibody to bind to IL-17F and / or IL-17A was evaluated. In this assay, first a coating buffer (0.1 M Na ₂ CO ₃ (pH 9.6) is used.
)) At a concentration of 1000 ng / mL in a well of a 96-well polystyrene ELISA plate, 100 μL / well of goat anti-mouse IgG, Fc specific antibody (Jackson I
(mmunoresearch). One plate was prepared for each ligand. Plates are incubated overnight at 4 ° C., after which unbound antibody is aspirated and 300 μl
L / well wash buffer (0.137 M NaCl, 0.0027 M KCl, 0.
_{0072M Na 2 HPO 4, 0.0015M KH} 2 PO 4, plates were washed twice with 0.05% (v / v) PBS -Tween defined as polysorbate 20 (pH7.2)). 200 μL / well blocking buffer (PBS-Tween + 1% (w
/ V) Wells were blocked with bovine serum albumin (BSA)) for 1 hour, after which the plates were washed twice with wash buffer. Start with the first 1: 1000 dilution and 1: 1,000
Serial 10-fold dilutions (in blocking buffer) of 1,000,000 sera were prepared. Next, replicate samples of each dilution were transferred to assay plates (100 μL / well) to bind mouse IgG in serum to the assay plate through the Fc portion of the molecule. Normal mouse serum served as a negative control and human IL 17RC-Fc protein was added as a positive assay control. Note: The coating for this control is goat anti-human IgG, Fc specific antibody (Jackson
Immunoresearch). After 1 hour incubation at room temperature,
Wells were aspirated and plates were washed twice as described above. Next, biotinylated IL 17F (biotin: protein molar ratio 6: 1) or biotinylated IL at a concentration of 500 ng / mL
17A (biotin: protein molar ratio 10: 1) was added to a well (separate plate) (100 μm).
L / well). After 1 hour incubation at room temperature, unbound biotinylated ligand was aspirated from the wells and the plate was washed twice. Next, horseradish peroxidase labeled streptavidin (Pierce, Rockford) at a concentration of 500 ng / mL.
, IL) was added to each well (100 μL / well) and the plate was incubated for 1 hour at room temperature. After removal of unbound HRP-SA, the plate was washed twice and 100 μL / well tetramethylbenzidine (TMB) (BioFX Laboratories, Owi).
ngs Mills, MD) was added to each well and the plate was incubated for 2 minutes at room temperature. 450 nm TMB reaction terminator (BioFX Laboratories, Ow
ings Mills, MD) to stop staining progress by addition of 100 μL / well,
4 on the Molecular Devices Spectra MAX 340 machine
The absorbance value of the well was read at 50 nm.

(B) Direct assay)
Using a direct ELISA assay, anti-human IL-17F or anti-human IL-in antiserum
The ability of the 17A antibody to bind to IL-17F and / or IL-17A was evaluated. In this assay, first a coating buffer (0.1 M Na ₂ CO ₃ (pH 9.6) is used.
)) At a concentration of 1000 ng / mL, the wells of a 96-well polystyrene ELISA plate were coated with 100 μL / well of IL-17F or IL-17A. One plate was prepared for each ligand. Plates are incubated overnight at 4 ° C., after which unbound antibody is aspirated and 300 μL / well wash buffer (0.137 M NaCl, 0
. 0027M KCl, 0.0072M Na ₂ HPO ₄ , 0.0015M KH ₂ PO
₄ , PBS-Tw defined as 0.05% (v / v) polysorbate 20 (pH 7.2)
The plate was washed twice with een). 200 μL / well blocking buffer (P
Wells were blocked with BS-Tween + 1% (w / v) bovine serum albumin (BSA)) for 1 hour, after which the plates were washed twice with wash buffer. Starting from the first 1: 1000 dilution, serial 10-fold dilutions (in blocking buffer) of serum up to 1: 1,000,000 were prepared. Next, replicate samples of each dilution were transferred to the assay plate (100 μL / well) in order to bind specific proteins in the serum to the assay plate. Normal mouse serum served as a negative control and zcytor14 (lot A1034F) was added as a positive assay control. After 1 hour incubation at room temperature, the wells were aspirated and the plate was washed twice as described above. Next, horseradish peroxidase-labeled goat anti-mouse IgG, Fc specific antibody (Jackson Immunoresearch) at a concentration of 1: 5000
ch) was added to both plates (100 μL / well). After 1 hour incubation at room temperature, unbound antibody was aspirated from the wells and the plate was washed twice. Tetramethylbenzidine (TMB) (BioFX Laboratories, Owings Mil
ls, MD) (100 μL / well) was added to each well and the plate was incubated at room temperature for 2 minutes. 450 nm TMB reaction terminator (BioFX Laboratories
The staining progress was stopped by the addition of 100 μL / well of Owings Mills, MD) and the absorbance values of the wells were read at 450 nm on a Molecular Devices Spectra MAX 340 instrument.

(C) Neutralization assay)
IL-17F and / or IL-17A through its cognate receptor of anti-human IL-17F or anti-human IL-17A antibody in antiserum using a plate-based neutralization assay
The ability to inhibit (neutralize) the stimulatory activity was evaluated. In this assay, first, 100 μL / well of human IL in a well of a 96-well polystyrene ELISA plate at a concentration of 1000 ng / mL in coating buffer (0.1 M Na ₂ CO ₃ (pH 9.6))
17RC-Fc protein was coated. One plate was prepared for each ligand. Plates are incubated overnight at 4 ° C., after which unbound receptor is aspirated and 300 μL / well wash buffer (0.137 M NaCl, 0.0027 M KCl, 0.007
The plate was washed twice with 2M Na ₂ HPO ₄ , 0.0015M KH ₂ PO ₄ , PBS-Tween defined as 0.05% (v / v) polysorbate 20 (pH 7.2). 200 μL / well blocking buffer (PBS-Tween + 1% (w / v)
The wells were blocked with bovine serum albumin (BSA) for 1 hour, after which the plates were washed twice with wash buffer. Starting from the first 1: 500 dilution, serial 10-fold dilutions (in blocking buffer) of 1: 500,000 sera were prepared. Next, 200 ng
Biotinylated IL-17F (biotin: protein molar ratio 6: 1) or biotinylated IL-17A (biotin: protein molar ratio 10: 1) at a concentration of 1 mL / mL (well) of a dilution plate (separate plate) 100 μL / well), and mixed well by pipetting up and down several times and incubated at room temperature for 1 hour. Note: Mixing serum dilutions and biotinylated ligands in equal volumes will result in serial dilutions from 1: 1000 to 1: 1,000,000.
And the ligand concentration is 100 ng / ml. Next, replicate samples of each serum dilution / biotinylated ligand solution were transferred to assay plates (100 μL / well). Normal mouse serum served as a negative control and human IL-17RC-Fc protein was added as a positive assay control. After 1 hour incubation at room temperature, the wells were aspirated and the plate was washed twice as described above. Next, horseradish peroxidase labeled streptavidin (Pierce, Rockford, IL) was added to each well (100 μL / mL) at a concentration of 500 ng / mL.
The plate was incubated for 1 hour at room temperature. After removal of unbound HRP-SA, the plate was washed twice and 100 μL / well tetramethylbenzidine (TMB)
(BioFX Laboratories, Owings Mills, MD) was added to each well and the plate was incubated at room temperature for 3 minutes. 1 of 450 nm TMB reaction terminator (BioFX Laboratories, Owings Mills, MD)
Staining progression was stopped by the addition of 00 μL / well, and Molecular Device
The absorbance values of the wells were read at 450 nm on an s Spectra MAX 340 instrument.

(D) Immunization scheme)
Every 2 weeks for 6 weeks (3 inoculations), 5 balb / C mice were injected IL-1 by intraperitoneal injection.
Immunized with 7F-BSA (50 μg each). Two weeks later, these mice were boosted with IL 17F-BSA (50 μg each) by intraperitoneal injection. Blood samples were collected weekly after the last three boosts for serum evaluation. Approximately two months after the last boost, all five mice were boosted with IL-17F-BSA (50 μg each) by subcutaneous injection and final blood was collected for serum evaluation.

(E) Conclusion of serum evaluation by ELISA)
For both capture and direct ELISA assays, all five mice were tested for IL-17.
It shows that a significant antibody response to F was expressed. The direct assay shows that 4 out of 5 mice bind moderately to IL-17A and 1 mouse binds weakly to IL-17A. The neutralization assay showed that 2 out of 5 mice moderately inhibited IL-17F binding,
It shows that the other two animals weakly inhibit the binding of IL-17F. One mouse is IL-17
Does not inhibit F binding at all. Further demonstrated by this assay is that 2 out of 5 mice weakly inhibit IL-17A binding while the other 3 do not inhibit binding. One mouse inhibits the binding of both ligands to different extents.

(F) Fusion procedure)
At least 4 weeks after the final immunization, the mice with the most significant IL-17F and IL-17A neutralizing titers were finally immunized with approximately 50 μg IL-17A-BSA in PBS by subcutaneous injection. Under normal conditions, the spleen and lymph nodes of this mouse are collected after 5 days, prepared in a single cell suspension, and lymphoid cells: myeloma cells with PEG 1500 using standard in-house protocols. It would have been fused to the Ag8 mouse myeloma cell line at a ratio of 2: 1. In this case, the mice died after injection and the spleen was collected, prepared in a single cell suspension and frozen at -80 ° C for 5 days. After quickly thawing the splenocyte suspension, the fusion was completed as described above. The fusion mixture was dispensed into a series of 96 well flat bottom plates. Nutrition was given to the wells of the fusion plate on days 4-7 (minimum 2 times, maximum 3 times). Wells were assayed 8 days after fusion plating.

(G) Fusion screening)
The ILoma described above, except that the hybridoma supernatant was tested undiluted from the culture plate.
Capture and neutralization ELISAs for -17F and IL-17A were used for screening. All “positive” clones (detailed in Example 19) were confirmed by repeating both assays with replicated samples. 24 “positive” clones
Extended to culture in well plates. If the density of the 24-well culture is about 4-6 × 10 ⁵ cells / mL, the supernatant (about 1.8 mL) is individually collected and stored for each clone, and the cells from each well are stored frozen did. The collected supernatant was used to further evaluate which clones met the required reagent needs. Appropriate clones were subjected to first and second cloning and then scaled up for purification.

Hybridomas expressing monoclonal antibodies against IL-17A and IL-17F were originally deposited as American Type Tiss under the Budapes Convention.
deposited with the ue Culture Collection (ATCC; Manassas VA) Patent Depositary and given the following ATCC accession number: clone 339.
15.5.3 (ATCC patent deposit name PTA-7987, deposited on November 7, 2006); Clone 339.15.33.6 (ATCC patent deposit name PTA-7888,200)
(Deposited on November 7, 6); and clone 339.15.6.16 (ATCC patent deposit name PTA-7789, deposited on November 7, 2006).

(Example 19)
(IL-17A / F mAb competitive binding assay protocol)
To evaluate the ability of the IL-17A / F antibodies of the invention to bind to the ligands IL-17A and IL-17F (as disclosed in Example 18), a flow cytometry-based competitive binding assay was used. It was. Incubation of a BHK cell line stably transfected with full-length IL-17RC in the presence of the ligand IL-17A or IL-17F and an IL-17A / F antibody of the invention targeted to bind to the ligand is Allows detection and relative quantification of ligand bound to the cell surface (and thus not bound to antibody). Biotinylation of the ligand allows FACS detection using a secondary streptavidin-conjugated fluorophore. The decrease in cell-bound ligand over antibody titration is recorded as a decrease in the average fluorescence of the cells.

Staining medium (HBSS + 1% BSA + 0.1% NaAzide + 10 in a volume of 100 ul
Biotinylated ligands are individually premixed at 1 ug / ml with titered antibodies in mM HEPES) and incubated at room temperature for 15 minutes. BHK cell line stably transfected with full length IL 17RC is resuspended in Versene (Invitrogen Cat # 15040-066) and equilibrated to 2 × 10e5 cells / 100 ul
Prepare for ligand staining by pelleting and resuspension in ligand / antibody premix. Stained cells are incubated at 4 ° C. for 30 minutes, washed once in staining medium, 1:
Stain with streptavidin-PE (BD Pharmingen catalog number 554061) at a ratio of 100. The cells were incubated at 4 ° C. for 30 minutes in the dark, washed twice in staining medium and stained with Cytofix (BD Bioscience 55
4655) and 1: 1 resuspension. BD LSR for data collection and analysis
Use a II flow cytometer or similar instrument. The graph shown in the figure represents a typical analysis result using the progression protocol. Graphs were generated using the Prizm software program. Y values represent MFI normalized to maximum and minimum (100% and 0%) based on ligand-only and no-ligand / no-antibody control wells, and thus the percent binding of ligand to cells. The software calculates the IC50 for each curve.
Table 1 contains the IC50 values obtained for each IL-17A / F antibody.

例示を目的として本発明の具体的な実施形態について本明細書で述べたが、前述から、
本発明の精神および範囲から逸脱することなく、様々な改変が可能であることが理解され
よう。

While specific embodiments of the present invention have been described herein for purposes of illustration, from the foregoing,
It will be understood that various modifications can be made without departing from the spirit and scope of the invention.

Claims (6)

  An isolated cross-reactive monoclonal antibody or antigen-binding fragment thereof that binds to IL-17A (SEQ ID NO: 2) and IL-17F (SEQ ID NO: 4), wherein the antibody or antigen-binding fragment thereof is IL-17A Blocks both IL-17F and IL-17F to IL-17RC and binds to the same epitope as the antibody produced by the hybridoma of clone designation 339.15.3.6 (ATCC Patent Deposit name PTA-7988) The isolated cross-reactive monoclonal antibody or antigen-binding fragment thereof.   The isolated antibody or antigen-binding fragment thereof according to claim 1, wherein the antibody or antigen-binding fragment thereof is a mouse antibody, a chimeric antibody, or a humanized antibody.   The antibody or antigen-binding fragment thereof is a humanized antibody or antigen-binding fragment thereof derived from an antibody produced by a hybridoma of clone designation number 339.15.3.6 (ATCC patent deposit name PTA-7988), The isolated antibody or antigen-binding fragment thereof according to claim 1 or 2.   The isolated antibody or antigen-binding fragment thereof according to any one of claims 1 to 3, wherein the antibody comprises a human immunoglobulin constant region.   The isolated antibody or antigen-binding fragment thereof according to any one of claims 1 to 3, wherein the antigen-binding fragment further comprises a human immunoglobulin constant region.   The isolated antibody or antigen-binding fragment thereof according to claim 4 or 5, wherein the isotype of the human immunoglobulin constant region is IgG.

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