WO2017211319A1 - 用于结合白细胞介素4受体的抗体 - Google Patents

用于结合白细胞介素4受体的抗体 Download PDF

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WO2017211319A1
WO2017211319A1 PCT/CN2017/087592 CN2017087592W WO2017211319A1 WO 2017211319 A1 WO2017211319 A1 WO 2017211319A1 CN 2017087592 W CN2017087592 W CN 2017087592W WO 2017211319 A1 WO2017211319 A1 WO 2017211319A1
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seq
variable region
chain variable
light chain
heavy chain
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PCT/CN2017/087592
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English (en)
French (fr)
Chinese (zh)
Inventor
郑伟
潘武宾
杨欣
陈阳
张立民
蒋洁
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Suzhou Connect Biopharmaceuticals Ltd
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Suzhou Connect Biopharmaceuticals Ltd
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Priority to UAA201900001A priority Critical patent/UA124835C2/uk
Priority to MX2018014941A priority patent/MX2018014941A/es
Priority to PH1/2018/502544A priority patent/PH12018502544B1/en
Priority to NZ749151A priority patent/NZ749151B2/en
Priority to JP2018564202A priority patent/JP7025356B2/ja
Priority to ES17809758T priority patent/ES3007134T3/es
Priority to SG11201810855VA priority patent/SG11201810855VA/en
Priority to RU2019100002A priority patent/RU2774446C2/ru
Priority to KR1020227022353A priority patent/KR102502988B1/ko
Priority to CA3026568A priority patent/CA3026568A1/en
Priority to US16/307,930 priority patent/US20190177408A1/en
Priority to IL263268A priority patent/IL263268B2/en
Priority to EP17809758.0A priority patent/EP3470430B1/en
Priority to MYPI2018002201A priority patent/MY189035A/en
Priority to AU2017276473A priority patent/AU2017276473B2/en
Priority to KR1020197000454A priority patent/KR102417217B1/ko
Application filed by Suzhou Connect Biopharmaceuticals Ltd filed Critical Suzhou Connect Biopharmaceuticals Ltd
Priority to EP24177229.2A priority patent/EP4420671A3/en
Priority to BR112018074325-9A priority patent/BR112018074325A2/pt
Publication of WO2017211319A1 publication Critical patent/WO2017211319A1/zh
Priority to ZA2018/08209A priority patent/ZA201808209B/en
Priority to SA518400605A priority patent/SA518400605B1/ar
Anticipated expiration legal-status Critical
Priority to US16/809,411 priority patent/US10774141B2/en
Priority to US16/994,464 priority patent/US11866491B2/en
Priority to JP2022019435A priority patent/JP2022065063A/ja
Priority to US18/510,553 priority patent/US20240190954A1/en
Priority to AU2024205464A priority patent/AU2024205464A1/en
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Definitions

  • the present invention relates to the field of biopharmaceuticals, and in particular to an antibody capable of binding to an interleukin 4 (IL-4) receptor (IL-4R) and uses thereof.
  • IL-4 interleukin 4
  • Interleukin-4 is a cytokine produced primarily by activated T cells, monocytes, basophils, mast cells, and eosinophils.
  • IL-4 is involved in a variety of biological processes, and its biological effects are known to stimulate the activation of activated B cells and T cells, and the differentiation of CD4 + T cells into type II helper T cells.
  • Studies have shown that IL-4 has multiple effects in the immune response of diseases such as allergic diseases, autoimmune diseases, infectious diseases, and tumors, and has therapeutic effects on tumors, autoimmune diseases, and infectious diseases, and IL-4 has a regulatory effect on the vaccine immune response. Therefore, IL-4 has always been one of the research hotspots.
  • IL-13 is also a cytokine produced by the secretion of activated T cells and has different functions in different cell types such as monocytes, B cells, mast cells and keratinocytes.
  • IL-13 can inhibit the release of inflammatory cytokines and chemical factors by monocytes, induce B cell proliferation and differentiation, and promote IgE synthesis.
  • IL-13 and IL-4 have many common functions in biological function, including inhibiting the release of inflammatory mediators by monocytes, inducing dendritic changes of macrophages, promoting the expression of CD23 on the surface of monocytes and stimulating the synthesis of immunoglobulin by B cells.
  • IL-13 also has its own biological functions, including: promoting human monocyte differentiation and cell surface antigen changes; inducing B cell proliferation, differentiation, promoting B cell secretion of antibodies; regulating IgE synthesis, and body allergy Related; inhibit tumor cell growth; inhibit HIV replication and the like.
  • IL-4R cell surface IL-4 receptor
  • Human IL-4R is a heterodimer formed by two polypeptide chains, one of which has a high affinity for IL-4 (hIL-4R ⁇ , UniProtKB: P24394).
  • IL-13R alpha chain also together with the IL-4R alpha chain constitutes another form of IL-4R complex.
  • the IL-4R ⁇ chain plays a leading role in IL-4 binding in the IL-4R complex, and it also involves other cytokines, the IL-4R ⁇ chain is currently being studied as a major subject, and for this target Human monoclonal antibodies have been clinically proven to be effective in relieving and treating asthma, eczema, and atopic dermatitis.
  • the human interleukin-4 receptor is known to produce a soluble form of the protein (shIL-4R ⁇ , SEQ ID NO. 94), a soluble form of the protein that inhibits IL-4 mediated cell proliferation and T cells. Mediated upregulation of IL-5. Two forms of this receptor are associated with allergic reactions, which manifest as allergic rhinitis, sinusitis, asthma or eczema. Blocking antibodies that target this protein are therefore useful in the treatment and alleviation of such diseases.
  • Asthma is a chronic airway inflammatory disease involving a variety of inflammatory cells such as eosinophils, mast cells and lymphocytes.
  • the specific pathogenesis is still unclear.
  • Cytokines such as IL-4 play an important role in the development of bronchial asthma.
  • the development of specific antibodies against IL-4 is one of the effective ways to solve asthma treatment.
  • Inhibition of IL-4/IL-4R ⁇ can have an effective immunomodulatory effect on asthma.
  • Allergic rhinitis has much in common with the pathogenesis of asthma, and all belong to type I allergy.
  • Drug therapy is currently the focus of AR treatment, in which nasal corticosteroids and antihistamines are at the core.
  • Atopic dermatitis also known as atopic dermatitis or atopic dermatitis, is a common dermatological disease, more common in children and adolescents, often with certain genetic allergic diseases such as allergic rhinitis, asthma, etc. Concurrent.
  • the immune factors involved in cytokines such as IL-4 and IL-13 are one of the main pathogenesis.
  • Eosinophilic esophagitis is a chronic immune inflammatory disease characterized by infiltration of eosinophils (EOS) in the esophageal wall. The onset of EoE is associated with Th2 cell dysfunction.
  • EOS eosinophils
  • specific specific protocols such as novel biological agents against IL-5 (such as mepolizumab) have become hotspots in research. Immunomodulatory therapy has yielded results in animal models, but human clinical trials still need to be explored.
  • Drugs such as PGD2 inhibitors, anti-TNF- ⁇ , and anti-IL-13 are under investigation.
  • hIL-4R targets have entered clinical trials, such as Dupilumab, and have shown good efficacy in the phase II clinical trial of atopic dermatitis.
  • Dupilumab monoclonal antibody drugs targeting hIL-4R targets have entered clinical trials, such as Dupilumab, and have shown good efficacy in the phase II clinical trial of atopic dermatitis.
  • other companies have applied for other monoclonal antibody patents for hIL-4R, such as US 7,186,809 and US 7,638,606.
  • the present invention obtains a specific antibody against IL-4R by antibody screening and optimization, and the antibody can act as a blocking agent for binding of IL-4 to IL-4R, and can be used for treating inflammation or allergy by binding to IL-4R. Sexual diseases, etc.
  • the antibody of the present invention has a serine (31Ser) at position 31 of the light chain variable region (VL), and refers to the sequence shown in SEQ ID NO: The amino acid residue numbering, the antibody having aspartic acid (103Asp) at position 103 of the heavy chain variable region (VH) and tyrosine (104Tyr) at position 104.
  • the 31Ser is correspondingly in the CDR1 of the light chain variable region of the antibody of the invention
  • the 103Asp and 104Tyr being correspondingly in the CDR3 of the heavy chain variable region of the antibody of the invention.
  • the light chain variable region of the antibody of the present invention comprises the CDR1 set forth in SEQ ID NO: 2
  • the heavy chain variable region of the antibody comprises the CDR3 set forth in SEQ ID NO: 19;
  • the light chain variable region of an antibody of the invention comprises a combination of CDR1, CDR2 and CDR3 selected from the group consisting of:
  • the heavy chain variable region of an antibody of the invention comprises a combination of CDR1, CDR2 and CDR3 selected from the group consisting of:
  • the antibody of the present invention comprises a light chain variable region selected from the amino acid sequence shown by the sequence: SEQ ID NO: 40, SEQ ID NO: 41, SEQ ID NO: 44, SEQ ID NO: 45, SEQ ID NO: 46, SEQ ID NO: 47, SEQ ID NO: 49, SEQ ID NO: 50, SEQ ID NO: 51, SEQ ID NO: 54, SEQ ID NO: 55, and SEQ ID NO: 57, and The antibody comprises a heavy chain variable region selected from the amino acid sequences set forth in the sequence: SEQ ID NO: 59, SEQ ID NO: 60, SEQ ID NO: 61, SEQ ID NO: 62, SEQ ID NO: 63, SEQ ID NO: 64, SEQ ID NO: 65, SEQ ID NO: 66, SEQ ID NO: 67, SEQ ID NO: 74, SEQ ID NO: 75, SEQ ID NO: 76, SEQ ID NO: 77, SEQ ID NO: 78, SEQ ID NO: 79, SEQ
  • the antibody of the invention comprises a combination of a light chain variable region and a heavy chain variable region selected from the group consisting of:
  • the invention provides an antibody capable of binding to an interleukin 4 (IL-4) receptor (IL-4R) comprising a light chain variable region (VL), said light chain variable region A combination comprising CDR1, CDR2 and CDR3 selected from the group consisting of:
  • IL-4R interleukin 4 receptor
  • VL light chain variable region
  • the antibody comprises a heavy chain variable region (VH) comprising a combination of CDR1, CDR2 and CDR3 selected from the group consisting of:
  • the light chain variable region of the antibody of the present invention comprises a combination of FR1, FR2, FR3 and FR4 selected from the group consisting of:
  • FR1 represented by SEQ ID NO: 9 FR2 represented by SEQ ID NO: 10, FR3 represented by SEQ ID NO: 12, and FR4 represented by SEQ ID NO: 13;
  • the heavy chain variable region of the antibody comprises a combination of FR1, FR2, FR3 and FR4 selected from the group consisting of:
  • FR1 represented by SEQ ID NO: 26 FR2 represented by SEQ ID NO: 32, FR3 represented by SEQ ID NO: 35, and FR4 represented by SEQ ID NO: 38;
  • FR1 shown in SEQ ID NO: 25 FR2 shown in SEQ ID NO: 32, FR3 shown in SEQ ID NO: 35, and FR4 shown in SEQ ID NO: 38;
  • FR1 represented by SEQ ID NO: 28 FR2 represented by SEQ ID NO: 32, FR3 represented by SEQ ID NO: 35, and FR4 represented by SEQ ID NO: 38;
  • FR1 represented by SEQ ID NO: 23 FR2 represented by SEQ ID NO: 32, FR3 represented by SEQ ID NO: 35, and FR4 represented by SEQ ID NO: 38;
  • FR1 represented by SEQ ID NO: 21 FR2 represented by SEQ ID NO: 32, FR3 represented by SEQ ID NO: 35, and FR4 represented by SEQ ID NO: 38.
  • the light chain variable region or heavy chain variable region of the antibody of the present invention is FR1-CDR1-FR2-CDR2-FR3-CDR3-, according to the domain composition of the antibody light chain variable region and the heavy chain variable region known in the art.
  • the sequence of FR4 comprises the above domain components, or (X)n-FR1-(X)n-CDR1-(X)n-FR2-(X)n-CDR2-(X)n-FR3-(X)
  • the sequence of n-CDR3-(X)n-FR4-(X)n comprises the above domain components, wherein X is any amino acid residue and n is an integer equal to or greater than zero.
  • the antibody provided by the present invention comprises a light chain variable region selected from the amino acid sequences shown by the following sequences:
  • the antibody provided by the present invention comprises a heavy chain variable region selected from the amino acid sequences shown by the following sequences:
  • the antibodies provided herein comprise a combination of a light chain variable region and a heavy chain variable region selected from the group consisting of:
  • (31) a light chain variable region of SEQ ID NO. 57 and a heavy chain variable region of SEQ ID NO.
  • the antibody provided by the present invention is capable of binding to IL-4R and functions as an antagonist of IL-4R.
  • the antibody is capable of binding to IL-4R ⁇ , preferably to mammalian IL-4R ⁇ , more preferably to human IL-4R ⁇ , even more preferably to human soluble IL-4R ⁇ .
  • the binding affinity of the antibodies provided by the present invention to IL-4R ⁇ can be determined by Biacore or ELISA methods.
  • the antibody was determined to bind IL-4R ⁇ with an affinity of less than 100 nM, less than 10 nM, less than 1 nM, less than 0.5 nM, and even less than 0.1 nM.
  • the ratio of expression of the antibody and the reference antibody provided by the present invention is 0.1-3:1, excellent It is selected from 0.3 to 3:1, more preferably from 0.4 to 3:1, still more preferably from 0.5 to 3:1, still more preferably from 0.6 to 3:1, still more preferably from 0.7 to 3:1, still more preferably from 1 to 3:1.
  • the antibody provided by the present invention may be a monoclonal antibody, a fully or partially humanized antibody or a chimeric antibody;
  • the antibody is an immunoglobulin, preferably IgA, IgD, IgE, IgG or IgM, more preferably an IgGl, IgG2, IgG3 or IgG4 subtype, more preferably an IgG2 or IgG4 subtype.
  • the invention provides a fusion protein or conjugate comprising an antibody of the invention.
  • the fusion protein or conjugate further comprises a cell surface receptor, an active protein and a polypeptide, a small molecule compound such as an amino acid and a saccharide, a small molecule polymer, or a method of the present invention, which is chemically or physically bound to the antibody of the present invention.
  • a cell surface receptor an active protein and a polypeptide
  • a small molecule compound such as an amino acid and a saccharide
  • a small molecule polymer or a method of the present invention, which is chemically or physically bound to the antibody of the present invention.
  • Other parts of the antibody that are chemically modified, and the like.
  • the invention provides a nucleic acid sequence encoding a heavy chain variable region and/or a light chain variable region of an antibody provided herein;
  • the nucleic acid sequence is capable of encoding the heavy and/or light chains of the antibodies provided herein.
  • the invention also provides a vector comprising a nucleic acid sequence provided herein.
  • the vector may be a eukaryotic expression vector, a prokaryotic expression vector, an artificial chromosome, a phage vector, or the like.
  • the above vectors or nucleic acid sequences can be used for transformation or transfection of host cells for purposes such as preservation or antibody expression. Accordingly, the invention also provides a host cell transformed or transfected with the nucleic acid sequence or vector.
  • the host cell can be any prokaryotic or eukaryotic cell, such as a bacterial or insect, fungal, plant or animal cell.
  • the antibodies provided herein can be obtained using any method known in the art.
  • the heavy chain variable region and/or the light chain variable region of the antibody can be obtained first from the nucleic acid sequence provided by the present invention, or the heavy and/or light chain of the antibody can be obtained, and then Other domains are selected for assembly into antibodies; alternatively, the host cell provided by the present invention is allowed to express the heavy chain variable region and/or the light chain variable region of the antibody or the heavy and/or light chain of the antibody to assemble In the case of the antibody, the host cell is cultured.
  • the method further comprises the step of recovering the produced antibody.
  • the antibody, fusion protein or conjugate, nucleic acid sequence, vector, host cell or antibody produced by the above method provided by the present invention may be contained in a pharmaceutical composition, more specifically, in a pharmaceutical preparation, thereby according to actual needs. Used for a variety of purposes. Accordingly, in a further aspect, the invention provides a pharmaceutical composition comprising an antibody, fusion protein or conjugate of the invention, a nucleic acid sequence, a vector, a host cell and/or by the method described above Produced antibodies.
  • the pharmaceutical composition may be a pharmaceutical preparation.
  • the pharmaceutical preparation is, for example, an injection dosage form.
  • the pharmaceutical or pharmaceutical formulation further comprises a pharmaceutically acceptable carrier or excipient, depending on the particular dosage form.
  • At least one drug selected from the group consisting of an antiasthmatic drug such as salbutamol, an antihistamine such as loratadine, an immunosuppressive agent such as tacrolimus, and pyridin may be further included.
  • MeMos et al M receptor blockers such as ipratropium bromide, leukotriene receptor blockers such as montelukast, phosphodiesterase inhibitors such as theophylline, non-steroidal anti-inflammatory drugs Such as 5-aminosalicylic acid, etc., hormones such as beclomethasone, budesonide, etc., that is, the antibody, fusion protein or conjugate provided by the present invention, nucleic acid sequence, vector, host cell or antibody produced by the above method can be Use in combination with other drugs as needed.
  • the invention provides the antibody, fusion protein or conjugate, nucleic acid sequence, vector, host cell and/or antibody produced by the method for the preparation of a prophylactic, therapeutic or ameliorating inflammatory or allergic disease Use in
  • the inflammatory or allergic disease includes autoimmune diseases such as atopic dermatitis, asthma, eosinophilic esophagitis, eczema, allergic rhinitis, nasal polyps, rheumatoid arthritis and the like.
  • autoimmune diseases such as atopic dermatitis, asthma, eosinophilic esophagitis, eczema, allergic rhinitis, nasal polyps, rheumatoid arthritis and the like.
  • the invention provides a method of preventing, treating or ameliorating an inflammatory or allergic disease in a subject, the method comprising administering to a subject in need thereof an antibody, fusion protein or fusion provided by the invention An antibody, a nucleic acid sequence, a vector, a host cell, and/or an antibody produced by the method.
  • the subject is a mammal; more preferably, the subject is a human.
  • the inflammatory or allergic disease includes autoimmune diseases such as atopic dermatitis, asthma, eosinophilic esophagitis, eczema, allergic rhinitis, nasal polyps, rheumatoid arthritis and the like.
  • autoimmune diseases such as atopic dermatitis, asthma, eosinophilic esophagitis, eczema, allergic rhinitis, nasal polyps, rheumatoid arthritis and the like.
  • the method further comprises administering to the subject at least one drug selected from the group consisting of antiasthmatic drugs such as salbutamol, anti-group Amine drugs such as loratadine, immunosuppressive agents such as tacrolimus, pimecrolimus, etc., M receptor blockers such as ipratropium bromide, etc., leukotriene receptor blockers such as montelukast
  • antiasthmatic drugs such as salbutamol
  • anti-group Amine drugs such as loratadine
  • immunosuppressive agents such as tacrolimus, pimecrolimus, etc.
  • M receptor blockers such as ipratropium bromide, etc.
  • leukotriene receptor blockers such as montelukast
  • phosphodiesterase inhibitors such as theophylline
  • non-steroidal anti-inflammatory drugs such as 5-aminosalicylic acid, and the like, such as beclomethasone, budesonide, and the like.
  • the medicament is administered simultaneously or sequentially with the antibodies, fusion proteins or conjugates, nucleic acid sequences, vectors, host cells and/or antibodies produced by the methods provided herein.
  • the present invention also provides a kit comprising the anti-invention provided by the present invention Body, fusion protein or conjugate, nucleic acid sequence, vector, host cell and/or antibody produced by the method.
  • Figure 1 shows the pharmacokinetic profile of the antibody of the present invention in mice
  • Figure 2 is a graph showing the pharmacokinetic profile of the antibody of the present invention in cynomolgus monkeys
  • 3A-3C show, by FACS, the specific binding of the antibody of the present invention to TF-1 cells expressing IL-4R ⁇ , wherein 3A shows the fluorescent signal when the antibody L1012H1031 of the present invention is not added, and 3B shows the addition of the antibody L1012H1031 of the present invention. After the fluorescent signal, 3C shows the signal superposition comparison of 3A-3B.
  • 4A-4D show by FACS that the specific binding of the antibody of the present invention to IL-4R ⁇ -expressing TF-1 cells is blocked by sIL-4R ⁇ present in the system, wherein 4A shows that the antibody L1012H1031 of the present invention is not added.
  • the fluorescent signal 4B shows the fluorescent signal after addition of the antibody L1012H1031 of the present invention
  • 4C shows the fluorescent signal when the antibodies L1012H1031 and sIL-4R ⁇ of the present invention are added
  • 4D shows the signal superposition comparison of 4A-4C.
  • 5A-5B show the effect of the antibody of the present invention on inhibiting TARC and MDC release by ELISA, wherein 5A shows that the antibody L1020H1031 of the present invention inhibits the release of TARC factor, and 5B shows that the antibody L1020H1031 of the present invention inhibits the release of MDC factor.
  • test materials used in the following examples were purchased from conventional biochemical reagent stores.
  • Example 1 Preparation of antibody of the present invention and determination of expression amount by non-reducing SDS-PAGE gel electrophoresis
  • the coding sequence of the variable region of the antibody light chain was inserted into the pFUSE2ss-CLIg-hK vector (Invivogen, accession number: pfuse2ss-hclk) using the EcoRI and BsiWI digestion sites to construct a light chain expression vector; the coding sequence of the heavy chain variable region was utilized.
  • the EcoRI and NheI restriction sites were inserted into the pFUSEss-CHIg-hG2 vector (Invivogen, Cat. No.: pfusess-hchg2) or the pFUSEss-CHIg-hG4 vector (Invivogen, Cat. No.: pfusess-hchg4) to constitute a heavy chain expression vector.
  • Cell culture and transfection Expi293 performed (NO: A14635) according to Invitrogen Corporation Expi293 TM Expression System Kit manual. The cell density was adjusted to 2 ⁇ 10 6 /ml at the time of transfection, and 0.6 ⁇ g of the light chain expression vector and 0.4 ⁇ g of the heavy chain expression vector were added per ml of cells, and the culture supernatant was collected four days later.
  • the cell culture supernatant was subjected to non-reducing SDS-PAGE gel electrophoresis according to the method described in Appendix 8 of the Third Guide to Molecular Cloning.
  • Example 2 Detection of the antibody of the present invention inhibits the proliferation of TF-1 cells by hIL-4 or hIL-13
  • hIL-4 (Invivogen, article number: rhil-4) solution: Dissolve hIL-4 with 100 ⁇ l of PBS solution containing 0.1% BSA (Beyotime, Cat. No. ST023) to obtain a concentration of 100 ⁇ g/ml, and dissolve hIL-4 according to 5 ⁇ l of each tube was dispensed into a 1.5 ml (Nunc) centrifuge tube and stored in a -20 ° C refrigerator.
  • BSA Beyotime, Cat. No. ST023
  • WST-1 (Beyotime, Cat. No. C0036) solution Add 5ml of electron coupling agent (C0036-2) to WST-1 powder (C0036-1), completely dissolve into WST-1 solution, according to the volume of 620 ⁇ l per tube Pack into a 1.5ml centrifuge tube and store in a -20 ° C refrigerator.
  • C0036-2 electron coupling agent
  • the frozen TF-1 (ATCC: CRL- 2003TM ) cells in liquid nitrogen were taken out and shaken in a 37 ° C water bath to dissolve rapidly. Transfer the dissolved cell suspension to a 15 ml centrifuge tube, add 1640 medium to 10 ml, centrifuge at 800 rpm for 5 min, aspirate the supernatant, retain the cell pellet, repeat the wash once, add 10 ml of 10% FBS and 2 ng/ml GM-CSF. (Sino Biological, Cat. No.
  • the plasmids carrying the different sets of antibody genes were transfected into Expi293 cells, and 200 ⁇ l of the cell culture supernatant was taken 4 days after the transfection, and centrifuged at 800 rpm for 5 min, and the supernatant was filtered through a 0.22 ⁇ m pore size filter to be used for the proliferation blocking experiment.
  • a cell culture supernatant expressing the antibody of the present invention is passed through a 0.22 ⁇ m filter and purified by GE MabSelect Sure (Cat Number: 11003494) Protein A affinity chromatography column, and the purification system is GE AKTA. Purifier 10, the antibody collected after purification was concentrated and quantified using an Amicon ultrafiltration concentrator (Cat Number: UFC903096). At the time of detection, the antibody was diluted with PBS to 0 to 1 ⁇ g/ml for the proliferation blocking experiment.
  • the cells in the T75 cell flask were well-growth, transferred into a 15 ml centrifuge tube, centrifuged at 800 rpm for 5 min, the supernatant was discarded, and the cell pellet was taken.
  • the cells were resuspended in 10 ml of PBS, centrifuged at 800 rpm for 5 min, the supernatant was discarded, and a cell pellet was taken.
  • the cells were resuspended in 10 ml of 1640 medium (without GM-CSF) containing 10% FBS, centrifuged at 800 rpm for 5 min, the supernatant was discarded, and a cell pellet was taken.
  • the cells were resuspended in 5 ml of 1640 medium containing 10% FBS (without GM-CSF), and after the cells were counted, the medium was supplemented to adjust the cell density to 5 ⁇ 10 5 /ml.
  • the cell suspension was added to a 96-well plate at a volume of 80 ⁇ l per well (reserved outer ring anti-volatile cells without cells).
  • 10 ⁇ l of the prepared purified antibodies or 10 ⁇ l of the cell culture supernatant were added to 96-well cells (3 replicate wells). Then hIL-4 was diluted to 50 ng/ml with 1640 medium containing 10% FBS.
  • hIL-4 50 ng/ml of hIL-4 was added to the corresponding cell wells of a 96-well plate in a volume of 10 ⁇ l per well, so that the final cell density was 4 ⁇ 10 5 /ml, and the concentration of hIL-4 was 5 ng/ml.
  • 96-well plate volume per well was 100 ⁇ l, no hIL-4 was added, no antibody was added, only the same number of cells and the same volume of the culture medium negative control group (3 replicate wells) were added, and no antibody was added, supplemented with the same In the volume culture medium, only the positive control group (3 replicate wells) of the same concentration of hIL-4 was added to the cells.
  • 200 ⁇ l of PBS was added to each well of a 96-well cell plate to prevent evaporation of the inner ring liquid.
  • the 96-well cell plates were placed in a 37 ° C, 5% CO 2 incubator for static growth.
  • 96-well cell plates were statically cultured in a 5% CO2 incubator for 72 h and then added to each well of the cells. 10 ⁇ l of WST-1 solution. The 96-well cell plates were further placed in a 37 ° C, static culture in a 5% CO 2 incubator. After 24 h, the 96-well plate was placed in a flexstation 3 (Molecular Devices) and the value of OD450-OD650 was read.
  • the blocking effect of the antibody of the present invention on the proliferation of TF-1 cells of hIL-4 or hIL-13 is shown in Tables 3a-3b below.
  • the measured OD450-OD650 data was input into the prism5 software, the negative control value was set to the lowest value, the positive control value was set to the highest value, and the antibody concentration was taken as the logarithm value by prism5
  • the software fits the logarithm of the antibody concentration to the OD450-OD650 curve, and the calculated IC50 is shown in Table 4 below.
  • Example 3 ELISA assay for the binding ability of the antibody of the present invention to sIL-4R ⁇
  • sIL-4R ⁇ PEPRO TECH, Cat. No.: 200-04R
  • solution Take a sIL-4R ⁇ , add 1ml ddH2O, mix upside down, ie 100 ⁇ g/ml solution, then store in -20 °C refrigerator.
  • Sample to be tested Take the Expi293 cell culture supernatant expressing the antibody of the present invention after transient staining (the medium is Expi293 Expression Medium, Invitrogen, Cat. No. A1435102; in a 8% CO2 incubator, suspension culture at 100 rpm for 4 days) 10 ⁇ l and 2 ⁇ l, respectively, were added to 990 ⁇ l and 998 ⁇ l of PBS solution to prepare a sample of the antibody to be tested diluted 1:100 and 1:500.
  • the medium is Expi293 Expression Medium, Invitrogen, Cat. No. A1435102; in a 8% CO2 incubator, suspension culture at 100 rpm for 4 days
  • Control sample normal cell culture supernatant (Expi293 cells were not transfected, the medium was Expi293 Expression Medium (Invitrogen, Cat. No. A1435102; in 8% CO2 incubator, suspension culture at 100 rpm for 4 days) was also performed 1:100 and 1 :500 dilution, as a negative control sample.
  • the diluted antibody to be tested was sequentially added to the corresponding well, and the normal cell culture supernatant was added as a negative control sample, and each sample was made into three duplicate wells of 100 ⁇ l per well.
  • the enzyme plate was wrapped (or capped) with plastic wrap and incubated in a 10 ° C incubator for 1 h.
  • the 96-well microtiter plate was taken out, and the solution was discarded.
  • TMB solution (Solarbio, Cat Number: PR1200) was added to the 96-well microtiter plate row by row, 100 ⁇ l per well. After standing at room temperature for 5 minutes, the reaction was immediately terminated by adding a 2 M H 2 SO 4 solution to a 96-well microtiter plate.
  • the 96-well microtiter plate was placed in a flexstation 3 (Molecular Devices), the value of OD450 was read, and data collection was calculated and analyzed. The results are shown relative to the affinity of Control Antibody 1, see Tables 5a-5c below.
  • Antibody number OD 450/OD450 control antibody 1 Control antibody 1 1 L1021H1000 2.42 L1020H1000 2.27 L1019H1000 1.79 L1001H1000 1.56 L1012H1000 1.22 L1000H1031 1.14 L1020H1031 1.12 L1000H1014 1.06 L1020H1029 1.01
  • Antibody number OD 450/OD450 control antibody 1 L1024H1000 0.69 L1015H1000 0.67 L1000H1015 0.65 L1009H1000 0.64 L1021H1016 0.63 L1000H1023 0.63 L1000H1016 0.61 L1000H1009 0.56 L1000H1032 0.53 L1017H1000 0.49 L1021H1007 0.44 L1000H1027 0.44 L1020H1007 0.40 L1020H1027 0.40 L1012H1007 0.40 L1000H1013 0.38 L1000H1007 0.37 L1000H1021 0.35 L1000H1028 0.33 L1021H1027 0.29 L1016H1000 0.27 L1020H1020 0.26
  • mice To further screen for antibodies, a series of pharmacokinetic experiments were performed in mice.
  • the blood sample was not anticoagulated, and the serum was separated by centrifugation at room temperature 1500 g for 10 min within 2 h after the blood was taken. The collected supernatant was immediately transferred to a new labeled centrifuge tube and the serum was stored at -70 °C for temporary storage. Determination of antibody concentration in mice using ELISA:
  • sIL-4R ⁇ PEPRO TECH, Cat. No.: 200-04R
  • solution Take a sIL-4R ⁇ , add 1ml ddH2O, mix upside down, ie 100 ⁇ g/ml solution, then store in -20 °C refrigerator.
  • Samples to be tested 1 ⁇ l of each serum collected in different time periods was added to 999 ⁇ l of PBS solution containing 1% BSA to form a 1:1000 dilution of the serum sample to be tested.
  • the antibody to be detected was diluted to 0.1 ⁇ g/ml with a PBS solution containing 1% BSA and 0.1% normal animal serum (Beyotime, Cat. No. ST023).
  • 0.1 ⁇ g/ml of the antibodies to be detected 800, 600, 400, 200, 100, 50, 10, and 0 ⁇ l, respectively, were added to a PBS solution containing 1% BSA and 0.1% normal animal serum, 200, 400, 600, 800, 900, respectively.
  • 950, 990, 1000 ⁇ l were formulated into antibody standards of the present invention having final concentrations of 80, 60, 40, 20, 10, 5, 1, 0 ng/ml, respectively.
  • sIL-4R ⁇ solution 250 ⁇ l of 100 ⁇ g/ml sIL-4R ⁇ solution was added to 9.75 ml of PBS coating solution, and mixed upside down to obtain 2.5 ⁇ g/ml of antigen coating solution.
  • the prepared antigen coating solution was added to a 96-well enzymatic plate for centrifugation at 100 ⁇ l per well.
  • the 96-well microtiter plate was wrapped (or capped) with plastic wrap and incubated overnight in a 4 °C refrigerator. On the next day, the 96-well microtiter plate was taken out, the solution was discarded, and a PBS solution containing 2% BSA was added to 300 ⁇ l per well.
  • the plate was wrapped (or covered) with plastic wrap and incubated for 2 h in a refrigerator at 4 °C.
  • the 96-well microtiter plate was taken out, the solution was discarded, and the PBST was washed three times.
  • the diluted standard antibody and the serum sample to be tested are sequentially added to the corresponding wells, and each sample is made into three duplicate wells, 100 ⁇ l per well.
  • the plate was wrapped (or capped) with plastic wrap and incubated for 1 h at room temperature. The solution was discarded and washed 3 times with PBST.
  • TMB solution (Solarbio, Cat Number: PR1200) was added to the 96-well microtiter plate row by row, 100 ⁇ l per well.
  • Example 5 Pharmacokinetics of the antibodies of the invention in cynomolgus monkeys
  • the 3-5 year old cynomolgus monkey was selected and weighed 2-5 Kg, and the antibody was subcutaneously injected in an amount of 5 mg (antibody of the present invention or control antibody 2) / kg (crab monkey weight).
  • the antibody or control antibody 2 to be administered is accurately extracted with a disposable sterile syringe, and multiple injections are performed subcutaneously on the inner side of the animal's thigh, and the injection volume per point is not more than 2 ml.
  • the whole blood was collected from the subcutaneous vein of the hind limb of the animal at the time points of 0.5, 2, 4, 8, 24, 48, 72, 120, 168, 240, 336h, 432h, 504h, 600h, and 672h. Each blood volume was 1.5 ml.
  • the blood sample was not anticoagulated, and the serum was separated by centrifugation at room temperature 1500 g for 10 min within 2 h after the blood was taken.
  • the collected supernatant was immediately transferred to a new labeled centrifuge tube and the serum was stored at -70 °C for temporary storage.
  • the antibody concentration in the cynomolgus monkey was determined by the method described in Example 4. The pharmacokinetic results are shown in Figure 2 and Table 7 below.
  • Example 6 FACS detection of binding of an antibody of the invention to TF-1 cells
  • the frozen TF-1 (ATCC: CRL- 2003TM ) cells were taken out in liquid nitrogen and gently shaken in a 37 ° C water bath to dissolve rapidly. Add the dissolved cell suspension to a 15 ml centrifuge tube, add 1640 medium (Hyclone, Cat. No. SH30809.01B) to 10 ml, centrifuge at 800 rpm for 5 min, aspirate the supernatant, retain the cell pellet, repeat the wash once, add 10%.
  • FBS Hyclone, Cat. No.: SV30184.02
  • 2ng/ml GM-CSF (Sino Biological, Cat. No.
  • the cells were cultured in a T75 cell culture flask (Nunc) at 37 ° C in a 5% CO 2 incubator (Thermo). Every 2-3 days, the cell suspension was taken, centrifuged at 800 rpm for 5 min, the cells were resuspended in 10 ml of medium, and 1 ⁇ 10 6 cells of the cells were counted and transferred into a new T75 cell bottle, and the medium was added to 10 ml for continuous passage. After 2-3 times, the experiment can be carried out after the cells are in good condition (the cells are translucent and the cells are slightly suspended in a slightly irregular shape).
  • TF-1 cells were taken and counted by microscopy.
  • the cells were divided into three groups and placed in three 1.5 ml centrifuge tubes, each of which had a number of cells of 1 ⁇ 10 6 .
  • the cells were centrifuged at 800 rpm for 5 min, and the cells were resuspended in 1 ml of cold 1% BSA in PBS and washed once. Centrifuge the cells at 800 rpm for 5 min, add 45 ⁇ l of cold PBS containing 1% BSA to each centrifuge tube, and add 5 ⁇ l (500 ⁇ g/ml) of the L1021H1011, L1020H1031 or L1012H1031 antibody of the present invention to the first centrifuge tube.
  • Example 7 FACS detection of soluble hIL-4R ⁇ (sIL-4R ⁇ ) blocking the binding of antibodies to TF-1 cells
  • 10 ⁇ l (100 ⁇ g/ml) of sIL-4R ⁇ and 5 ⁇ l (500 ⁇ g/ml) of the L1021H1011, L1020H1031 or L1012H1031 antibody of the present invention were uniformly mixed in a 1.5 ml centrifuge tube at a molar ratio of 2:1.
  • 10 ⁇ l of PBS was mixed with 5 ⁇ l of the L1021H1011, L1020H1031 or L1012H1031 antibody of the present invention as a positive control, and 15 ⁇ l of PBS was used as a negative control.
  • the tube was placed in a 37 ° C incubator for 1 h.
  • TF-1 cells were taken and counted by microscopy.
  • the cells were divided into 4 groups and placed in three 1.5 ml centrifuge tubes, each of which had a number of cells of 1 ⁇ 10 6 .
  • the cells were centrifuged at 800 rpm for 5 min, and the cells were resuspended in 1 ml of cold 1% BSA in PBS and washed once.
  • the cells were centrifuged at 800 rpm for 5 min, and after resuspending the cells with 35 ⁇ l of cold 1% BSA in each centrifuge tube, 15 ⁇ l of the different antibody mixture and the control in step 3 were added.
  • the cells were centrifuged at 800 rpm for 5 min, and the cells were resuspended in 1 ml of cold 1% BSA in PBS and washed once.
  • the cells were centrifuged at 800 rpm for 5 min, and 499 ⁇ l of cold PBS containing 1% BSA was added to each centrifuge tube, and then 1 ⁇ l of FITC-labeled goat anti-human IgG (H+L) (Beyotime, Cat. No. A0556) was added.
  • H+L FITC-labeled goat anti-human IgG
  • an anti-human Fc (AHC) antibody (GE Healthcare) was coupled to a CM5 chip, and then the antibody of the present invention was captured by AHC, and different concentrations of human sIL-4R ⁇ were flowed through the surface of the chip on which the antibody of the present invention was captured, wherein The antibody of the invention was diluted to 2 ⁇ g/ml, and the antigen sIL-4R ⁇ was diluted to 0.39. 0.78, 1.56, 3.13, 6.25, 12.5, 25.0, 50.0 and 100.0 nM. The experimental method is then established in the Biacore T200 control software, after which the experimental program is run. The results are shown in Table 8 below.
  • Example 9 ELISA method to examine the effect of the antibodies of the invention on the inhibition of TARC and MDC release
  • Fresh heparin anticoagulation 10 ml (donation) was taken, mixed with PBS solution at room temperature 1:1, and carefully added to a prepared 20 ml human lymphocyte separation solution (Solarbio, Cat. No.: P8610). Centrifuge at 1500 rpm for 30 min at room temperature. After centrifugation, the PBMC layer was carefully aspirated and washed twice with PBS. The cells were finally diluted with 1640 medium containing 10% FBS, 200 IU/ml IL-2, and added to a 24-well plate for 1 x 10 6 cells per well.
  • L1020H1031 antibody was added to each well at a final concentration of 1000, 300, 100, 30, 10 ng/ml, and then a final concentration of 10 ng/ml of IL-4 (or 100 ng/ml of IL-13) was added. After 72 hours of culture, the assay was carried out according to the method provided by Human TARC ELISA kit (Abeam, Cat. No. ab183366) or Human MDC ELISA kit (Abeam, Cat. No. ab179885).
  • Example 10 Effect of specific amino acids on the metabolic kinetics and expression levels of the antibodies of the invention
  • the 103rd position (in CDR3) of the antibody heavy chain H1031 (SEQ ID NO. 91) sequence is Asp (103Asp), and the 104th position is Tyr (104Tyr).
  • the antibody of the present invention having 103Asp and 104Tyr has a 2- to 4-fold higher area under the drug-time curve and a clearance rate of about 70% compared to an antibody having no 103Asp and 104Tyr in the heavy chain.
  • the expression levels of the antibodies of the invention were further tested and compared to examine the effect that a particular amino acid at a particular location may have on the expression of the antibody.
  • the culture and transfection of Expi293 cells were the same as in Example 1.
  • the collected culture supernatant was then passed through a 0.22 ⁇ m filter and purified by GE MabSelect Sure (Cat. No. 11003494) Protein A affinity chromatography column.
  • the purification system was GE AKTA purifier 10
  • the antibody collected after purification was concentrated and quantified using an Amicon ultrafiltration concentrating tube (Cat. No. UFC903096). The quantitative results are shown in Table 10 below.
  • the 31st position (in CDR1) of the sequences of the antibody light chain L1012 (SEQ ID NO. 44), L1020 (SEQ ID NO. 55) and L1023 (SEQ ID NO. 51) is Ser. (31Ser).
  • the expression level of the antibody of the present invention having 31Ser is increased by about 2 to 5 times compared to an antibody having no 31Ser in the light chain.

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AU2017276473A AU2017276473B2 (en) 2016-06-08 2017-06-08 Antibody for binding to interleukin 4 receptor
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NZ749151A NZ749151B2 (en) 2017-06-08 Antibody for binding to interleukin 4 receptor
JP2018564202A JP7025356B2 (ja) 2016-06-08 2017-06-08 インターロイキン‐４受容体への結合のための抗体
ES17809758T ES3007134T3 (en) 2016-06-08 2017-06-08 Antibody for binding to interleukin 4 receptor
SG11201810855VA SG11201810855VA (en) 2016-06-08 2017-06-08 Antibody for binding to interleukin 4 receptor
RU2019100002A RU2774446C2 (ru) 2016-06-08 2017-06-08 Антитело для специфического связывания с рецептором интерлейкина 4
KR1020227022353A KR102502988B1 (ko) 2016-06-08 2017-06-08 인터루킨 4 수용체에 결합하는 항체
MX2018014941A MX2018014941A (es) 2016-06-08 2017-06-08 Anticuerpo para unirse al receptor de interleucina 4.
US16/307,930 US20190177408A1 (en) 2016-06-08 2017-06-08 Antibody for binding to interleukin 4 receptor
IL263268A IL263268B2 (en) 2016-06-08 2017-06-08 Antibody to bind to the interleukin 4 receptor
EP17809758.0A EP3470430B1 (en) 2016-06-08 2017-06-08 Antibody for binding to interleukin 4 receptor
MYPI2018002201A MY189035A (en) 2016-06-08 2017-06-08 Antibody for binding to interleukin 4 receptor
UAA201900001A UA124835C2 (uk) 2016-06-08 2017-06-08 Антитіло для зв'язування з рецептором інтерлейкіну 4
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KR1020197000454A KR102417217B1 (ko) 2016-06-08 2017-06-08 인터루킨 4 수용체에 결합하는 항체
EP24177229.2A EP4420671A3 (en) 2016-06-08 2017-06-08 Antibody for binding to interleukin 4 receptor
BR112018074325-9A BR112018074325A2 (pt) 2016-06-08 2017-06-08 anticorpo para ligação a receptor de interleucina 4
ZA2018/08209A ZA201808209B (en) 2016-06-08 2018-12-05 Antibody for binding to interleukin 4 receptor
SA518400605A SA518400605B1 (ar) 2016-06-08 2018-12-06 جسم مضاد للارتباط بمستقبل إنترليوكين 4
US16/809,411 US10774141B2 (en) 2016-06-08 2020-03-04 Antibody for binding to interleukin 4 receptor
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US18/510,553 US20240190954A1 (en) 2016-06-08 2023-11-15 Antibody for binding to interleukin 4 receptor
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