WO2021149945A1 - Pd-l1 단백질이 포함된 융합 단백질 및 이의 용도 - Google Patents
Pd-l1 단백질이 포함된 융합 단백질 및 이의 용도 Download PDFInfo
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- WO2021149945A1 WO2021149945A1 PCT/KR2021/000123 KR2021000123W WO2021149945A1 WO 2021149945 A1 WO2021149945 A1 WO 2021149945A1 KR 2021000123 W KR2021000123 W KR 2021000123W WO 2021149945 A1 WO2021149945 A1 WO 2021149945A1
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- C07K2317/526—CH3 domain
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/50—Immunoglobulins specific features characterized by immunoglobulin fragments
- C07K2317/52—Constant or Fc region; Isotype
- C07K2317/53—Hinge
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2319/00—Fusion polypeptide
- C07K2319/30—Non-immunoglobulin-derived peptide or protein having an immunoglobulin constant or Fc region, or a fragment thereof, attached thereto
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Definitions
- the present invention relates to a fusion protein comprising a PD-L1 protein and a modified immunoglobulin Fc region and uses thereof.
- Human programmed cell death-ligand 1 is a ligand for programmed death-1 (PD-1), as well as hematopoietic cells such as T lymphocytes, B lymphocytes, dendritic cells, or macrophages, It is a type 1 transmembrane protein that is also expressed in non-hematopoietic cells such as keratinocytes, islet cells, hepatocytes, and the like.
- PD-1 programmed death-1
- hematopoietic cells such as T lymphocytes, B lymphocytes, dendritic cells, or macrophages
- It is a type 1 transmembrane protein that is also expressed in non-hematopoietic cells such as keratinocytes, islet cells, hepatocytes, and the like.
- secondary signal stimulation co-stimulation
- PD-1 programmed death-1 is a secondary signaling factor (immune check point or immune modulator) that regulates secondary signaling activity of T cells, activated T cells (CD8 and/or CD4) or dendritic cells ( dendritic cells), it binds to PD-L1 (programmed cell death ligand 1) or B7.1 (CD80) expressed on the cell surface, thereby inhibiting T cell proliferation and reducing cytokine expression. It can inhibit cell function.
- PD-L1 programmed cell death ligand 1
- B7.1 CD80
- Binding between PD-1:PD-L1 is known to induce the activity of regulatory T cells (Immunol Rev. 2010 Jul; 236:219-42). Using the immune tolerance-inducing function of PD-L1, IgG1 Fc When the fused PD-L1 protein (PD-L1-Ig) was injected into a CIA (collagen-induced arthritis) mouse model, it was observed that arthritis symptoms were alleviated (Rheumatol Int. 2011 Apr; 31(4)). :513-9). Since PD-1 is expressed in activated T cells, PD-L1 protein is expected to be usefully used as a therapeutic agent that specifically targets active immune cells in autoimmune diseases as well as induction of immune tolerance in organ transplantation. .
- the Fc fusion technology of immunoglobulin (Ig) is one of the technologies for increasing the half-life of protein therapeutics.
- IgG1 used in the existing Ig fusion technology causes antibody dependent cell-mediated cytotoxicity (ADCC) and complement dependent cytotoxicity (CDC) in the body, autoimmune disease treatment or organ transplantation
- ADCC antibody dependent cell-mediated cytotoxicity
- CDC complement dependent cytotoxicity
- the Ig fusion protein as an immune tolerance inducing agent does not play a role in suppressing the inflammatory response, but rather exacerbates inflammation.
- a fusion protein comprising a programmed cell death-ligand 1 (PD-L1) protein and a modified immunoglobulin Fc region.
- Another object of the present invention is to provide a nucleic acid molecule encoding the fusion protein.
- Another object of the present invention is to provide an expression vector comprising the nucleic acid molecule.
- Another object of the present invention is to provide a host cell comprising the expression vector.
- Another object of the present invention is to provide a pharmaceutical composition for the prevention or treatment of immune diseases, comprising a fusion protein comprising a PD-L1 protein and a modified immunoglobulin Fc region as an active ingredient.
- Another object of the present invention is to provide the use of a fusion protein comprising a PD-L1 protein and a modified immunoglobulin Fc region for producing a pharmaceutical preparation having a preventive or therapeutic effect on an immune disease.
- Another object of the present invention is to provide a method for preventing or treating an immune disease, comprising administering to a subject a fusion protein comprising a PD-L1 protein and a modified immunoglobulin Fc region, and a pharmaceutically acceptable carrier. .
- the present invention provides a fusion protein comprising a PD-L1 protein and a modified immunoglobulin Fc region.
- the present invention also provides a nucleic acid molecule encoding the fusion protein.
- the present invention provides an expression vector comprising the nucleic acid molecule.
- the present invention provides a host cell comprising the expression vector.
- the present invention provides a pharmaceutical composition for preventing or treating an immune disease comprising a fusion protein comprising a PD-L1 protein and a modified immunoglobulin Fc region as an active ingredient.
- the present invention provides the use of a fusion protein comprising a PD-L1 protein and a modified immunoglobulin Fc region for producing a pharmaceutical preparation having an effect of preventing or treating an immune disease.
- the present invention also provides a method for preventing or treating an immune disease, comprising administering to a subject a fusion protein comprising a PD-L1 protein and a modified immunoglobulin Fc region, and a pharmaceutically acceptable carrier.
- the fusion protein according to the present invention is a fusion protein in which a PD-L1 protein and a modified immunoglobulin Fc region are linked by a sequence consisting of a GS sequence and an IgG1 hinge, and is flexible while inducing a dimer by connecting the GS sequence and a sequence consisting of an IgG1 hinge. It is characterized by being manufactured to maintain.
- the fusion protein according to the present invention has significantly higher purity and production yield than the existing fusion protein, has a high binding capacity to PD-1, reduces proliferation of activated T cells, and cytoplasm generated by activated T cells. Inhibits the production of Cain, has the effect of inhibiting the infiltration of T cells or macrophages into the tissue, it can be usefully used in the treatment of immune diseases.
- FIG. 1 shows the structure of a fusion protein (PD-L1-hyFc21 fusion protein) comprising a PD-L1 protein and a modified immunoglobulin Fc region.
- Figure 2a is the result of analyzing the cell concentration of cells expressing the PD-L1-hyFc21 fusion protein over time
- Figure 2b is the purity of the target protein through SE-HPLC in the cell culture medium of the cells expressing the PD-L1-hyFc21 fusion protein. is the result of the analysis.
- Figure 3a is the result of analyzing the cell concentration over time of cells expressing the PD-L1-hyFc5 fusion protein
- Figure 3b is the purity of the target protein through SE-HPLC in the cell culture medium of the cells expressing the PD-L1-hyFc5 fusion protein. is the result of the analysis.
- Figure 5a is a SE-HPLC analysis result of the purified PD-L1-hyFc21 fusion protein
- 5b is a SE-HPLC analysis result of the purified PD-L1-hyFc5 protein.
- FIG. 6 is a gel IEF analysis result of purified PD-L1-hyFc21 or PD-L1-hyFc5 fusion protein.
- DSF 7 is a differential scanning fluorescence (DSF) analysis result of purified PD-L1-hyFc21 or PD-L1-hyFc5 fusion protein.
- Figure 10a is a comparison result of the inhibition of the proliferation of activated human CD4 T cells by the PD-L1-hyFc21 or PD-L1-hyFc5 fusion protein
- 10b is the result of comparing the inhibition of cytokine expression of the activated human CD4 T cells. .
- 11 is a comparison result of cytokine expression inhibition of activated mouse CD4 T cells by PD-L1-hyFc21 or PD-L1-hyFc5 fusion proteins.
- Figure 12a is the result of measuring the ear thickness of mice after subcutaneous administration of the PD-L1-hyFc21 fusion protein to the IMQ-induced psoriasis mouse model
- Figure 12b is the result of measuring the ear thickness of the PD-L1-hyFc21 fusion protein in the IMQ-induced psoriasis mouse model. This is the result of measuring the ear thickness of mice after intravenous administration.
- Figure 13a is the result of confirming the change of the skin epithelial tissue through H&E staining after subcutaneous administration of the PD-L1-hyFc21 fusion protein to the rtTA-Peli1 psoriasis mouse model
- 13b is the result of measuring the thickness of the skin epithelial layer.
- rtTA non-psoriasis control
- rtTA-Peli1 psoriasis mouse model
- 16 shows the results of measuring the number of K14 + keratinocytes in the skin tissue after subcutaneous administration of the PD-L1-hyFc21 fusion protein to the rtTA-Peli1 psoriasis mouse model.
- 17 is a result of analyzing the changes in the skin epithelial layer as a score index after intravenous administration of the PD-L1-hyFc21 fusion protein to the rtTA-Peli1 psoriasis mouse model.
- FIG. 19a is the result of confirming the change of the skin epithelial tissue through H&E staining after intravenous administration of the PD-L1-hyFc21 fusion protein to the rtTA-Peli1 psoriasis mouse model
- FIG. 19b is the measurement result of the thickness of the skin epithelial layer.
- Th17 cell-related genes IL-17A and IL-22
- IL innate immune cell-related genes
- the present invention provides a fusion protein comprising a PD-L1 protein and a modified immunoglobulin Fc region.
- the PD-L1 protein may be an extracellular domain of the PD-L1 protein or a fragment thereof.
- the extracellular domain of the PD-L1 protein may be a polypeptide comprising an Ig V like domain of PD-L1 and an Immunoglobulin C like domain of PD-L1.
- the extracellular domain of the PD-L1 protein is a protein region exposed outside the cell membrane, and may be a polypeptide consisting of amino acids 19 to 238 of SEQ ID NO: 1 or a polypeptide consisting of amino acids 19 to 239 of SEQ ID NO: 1. .
- the extracellular domain of the PD-L1 protein contains an Ig V-like (Ig V, Ig V-like) sequence that is a conserved sequence similar to the amino acid sequence of an immunoglobulin (Ig, immunoglobulin), and the conservation is A highly conserved Ig V-like sequence is the amino acid sequence of 68 to 114 of SEQ ID NO: 1.
- it contains an Ig C-like (Ig C, Ig C like) sequence
- the highly conserved sequence region is the amino acid sequence of 153 to 210 of SEQ ID NO: 1.
- the fragment of the extracellular domain of the PD-L1 protein may include all or a part of the Ig V-like domain including the Ig V-like sequence of PD-L1.
- the Ig V-like domain in the extracellular domain of the PD-L1 protein is a site capable of interacting with PD-1, and may be a polypeptide (SEQ ID NO: 3) consisting of amino acid sequences 19 to 239 of SEQ ID NO: 1 , may be a polypeptide consisting of the amino acid sequence of 21 to 239 of SEQ ID NO: 1. In addition, it may be a polypeptide (SEQ ID NO: 4) consisting of the amino acid sequence of 19 to 133 of SEQ ID NO: 1, it may be a polypeptide consisting of the amino acid sequence of 21 to 133 of SEQ ID NO: 1.
- polypeptide consisting of the amino acid sequence of 21 to 114 of SEQ ID NO: 1 it may be a polypeptide consisting of the amino acid sequence of 19 to 114 of SEQ ID NO: 1.
- polypeptide consisting of the amino acid sequence of 21 to 120 of SEQ ID NO: 1 it may be a polypeptide consisting of the amino acid sequence of 19 to 120 of SEQ ID NO: 1.
- polypeptide (SEQ ID NO: 5) consisting of the amino acid sequence of 19 to 127 of SEQ ID NO: 1
- polypeptide (SEQ ID NO: 6) consisting of the amino acid sequence of 21 to 127 of SEQ ID NO: 1.
- polypeptide consisting of the amino acid sequence of 21 to 130 of SEQ ID NO: 1 it may be a polypeptide consisting of the amino acid sequence of 19 to 130 of SEQ ID NO: 1.
- polypeptide consisting of the amino acid sequence of 21 to 131 of SEQ ID NO: 1 it may be a polypeptide consisting of the amino acid sequence of 19 to 131 of SEQ ID NO: 1.
- the fragment of the extracellular domain of the PD-L1 protein when the fragment of the extracellular domain of the PD-L1 protein includes an Ig V-like domain or a fragment thereof, it may further include an Ig C-like domain of the extracellular domain of the PD-L1 protein (Immunoglobulin C like domain).
- the Ig C-like domain may be a polypeptide consisting of the amino acid sequence of 133 to 225 of SEQ ID NO: 1, or a polypeptide consisting of the amino acid sequence of 134 to 225 of SEQ ID NO: 1.
- the fragment of the extracellular domain of the PD-L1 protein when the fragment of the extracellular domain of the PD-L1 protein includes an Ig V-like domain or a fragment thereof, it may further include a polypeptide or a fragment thereof comprising an Ig C-like domain of the extracellular domain of the PD-L1 protein.
- the polypeptide comprising the Ig C-like domain refers to the extracellular domain of the PD-L1 protein excluding the Ig V domain, and the polypeptide having amino acids 134 to 239 of SEQ ID NO: 1 (SEQ ID NO: 7) or SEQ ID NO: 1 It may be a polypeptide having amino acids 134 to 238 of (SEQ ID NO: 8).
- extracellular domain of the PD-L1 protein or a fragment thereof may be derived from a human or a mouse.
- the extracellular domain of the human PD-L1 protein is a polypeptide (SEQ ID NO: 3) consisting of amino acid sequences 19 to 239 of SEQ ID NO: 1, and the extracellular domain of the mouse PD-L1 protein is amino acids 19 to 239 of SEQ ID NO: 2 It is a polypeptide consisting of a sequence.
- the extracellular domain of the PD-L1 protein is about 70%, 75%, 80%, 85%, 90%, 91%, 92%, 93 with the polypeptide sequence consisting of the 19th to 239th amino acid sequence of SEQ ID NO: 1 %, 94%, 95%, 96%, 97%, 98%, or 99% or more homology.
- the human PD-L1 protein has 290 amino acid residues and includes the amino acid sequence of SEQ ID NO: 1 (Accession Number: Q9NZQ7).
- the N-terminal amino acid residues 1 to 18 are signal sequences
- the mature human PD-L1 protein includes the amino acid sequences 19 to 290 of SEQ ID NO: 1.
- the extracellular domain of the human PD-L1 protein includes amino acid sequences of 19 to 238 of SEQ ID NO: 1 or 19 to 239 of SEQ ID NO: 1.
- the human PD-L1 protein includes an Ig V-like domain that is amino acids 19 to 127 of SEQ ID NO: 1 and an Ig C-like domain that is amino acids 134 to 226 of SEQ ID NO: 1.
- Mouse PD-L1 protein is reported to contain 290 amino acids, which includes the amino acid sequence of SEQ ID NO: 2 (Accession Number: Q9EP73). Amino acid residues 1 to 18 of SEQ ID NO: 2 are signal sequences, and the mature mouse PD-L1 protein includes amino acid sequences 19 to 290 of SEQ ID NO: 2. The extracellular domain of the mouse PD-L1 protein includes amino acid sequences 19 to 239 of SEQ ID NO:2. The mouse PD-L1 protein includes an Ig V-like protein having amino acids 19 to 127 of SEQ ID NO: 2 and an Ig C-like domain having amino acids 133 to 224 of SEQ ID NO: 2.
- the extracellular domain of the PD-L1 protein may include the entirety of an Ig V-like domain or a fragment thereof.
- the fragment of the extracellular domain of the PD-L1 protein may further include an Ig C-like domain or a polypeptide comprising an Ig C-like domain (the extracellular domain of PD-L1 excluding the Ig V-like domain).
- the extracellular domain of the PD-L1 protein or fragment thereof may include variously modified proteins or peptides.
- the modification may be performed by substituting, deleting or adding one or more proteins to the wild-type PD-L1 protein as long as the function of PD-L1 is not altered.
- These various proteins or peptides can be combined with wild-type proteins by 70%, 75%, 80%, 85%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, or 99 % homology.
- extracellular domain of PD-L1 protein is also used as a concept including “extracellular domain of PD-L1 protein and fragments thereof”.
- protein protein
- polypeptide peptide
- PD-L1 fusion protein and "PD-L1-modified immunoglobulin Fc region fusion protein” refer to a PD-L1 protein, an extracellular domain of a PD-L1 protein, or a fragment thereof, which is a modified immune system. It refers to a fusion protein bound to a globulin Fc region.
- the PD-L1 protein may be fused to the N-terminus or C-terminus of the Fc region of a modified immunoglobulin, and preferably, the PD-L1 protein is the N-terminus of the Fc region of the modified immunoglobulin. -Can be fused to the terminal
- the PD-L1 protein may be linked to the immunoglobulin Fc region by a linker peptide.
- the linker is GGGSGGS (SEQ ID NO: 10), AAGSGGGGGSGGGGSGGGGS (SEQ ID NO: 17), GGSGG (SEQ ID NO: 18), GGSGGSGGS (SEQ ID NO: 19), GGGSGG (SEQ ID NO: 20), (G4S) n (n is an integer from 1 to 10) ), (GGS)n (n is an integer from 1 to 10), (GS)n (n is an integer from 1 to 10), (GSSGGS)n (n is an integer from 1 to 10), KESGSVSSEQLAQFRSLD (SEQ ID NO: 21) , EGKSSGSGSESKST (SEQ ID NO: 22), GSAGSAAGSGEF (SEQ ID NO: 23), (EAAAK) n (n is an integer from 1 to 10), CRRRRRREAEAC (SEQ ID NO: 24), A(EAAAK) 4ALEA(EAAAK) 4A, GGGGGGGG (SEQ ID NO: 25), GGGGGG (
- PD-L1 and the immunoglobulin Fc region can be linked by a linker peptide consisting of the amino acid sequence of GGGSGGS (SEQ ID NO: 10).
- linker peptide consisting of the amino acid sequence of GGGSGGS (SEQ ID NO: 10).
- the fusion protein may exist in a dimer form.
- the bond between the fusion proteins constituting the dimer may be formed by a disulfide bond by a cysteine present in a linker.
- the fusion proteins constituting the dimer are identical. That is, the dimer may be a homodimer.
- the fusion protein may be soluble, in particular, it may be dissolved in purified water or physiological saline.
- the Fc region of the modified immunoglobulin may be any one or a combination of Fc regions of IgG1, IgG2, IgG3, IgD and IgG4.
- the Fc region is modified so that binding to the Fc receptor and/or complement (complement) does not occur.
- the Fc region of the modified immunoglobulin comprises in an N-terminal to C-terminal direction a hinge region, a CH2 domain and a CH3 domain, wherein the hinge region comprises a human IgG1 hinge region (SEQ ID NO: 16), wherein The CH2 domain may include a portion of the amino acid residues of the CH2 domain of human IgD and human IgG4, and the CH3 domain may include a portion of the amino acid residues of the CH3 domain of human IgG4.
- Fc region includes the heavy chain constant region 2 (CH2) and heavy chain constant region 3 (CH3) of an immunoglobulin, and includes the variable regions of the heavy and light chains of an immunoglobulin. and light chain constant region 1 (CL1). It may further comprise a hinge region of the heavy chain constant region.
- Hybrid Fc or hybrid Fc fragments are also referred to herein as “hFc” or “hyFc”.
- the Fc fragment of the present invention may be a native sugar chain, an increased sugar chain compared to the native type, a decreased sugar chain compared to the native type, or a form in which the sugar chain is removed.
- Immunoglobulin Fc sugar chains can be modified by conventional methods such as chemical methods, enzymatic methods, and genetic engineering methods using microorganisms. Removal of sugar chains from the Fc fragment sharply reduces the binding affinity of the primary complement component C1 to C1q and results in a decrease or loss of ADCC or CDC, thereby not inducing an unnecessary immune response in vivo.
- the immunoglobulin Fc fragment in a deglycosylated or aglycosylated form may be more suitable for the purpose of the present invention as a drug carrier.
- deglycosylation refers to enzymatic removal of sugars from an Fc fragment.
- aglycosylation means that the Fc fragment is produced in an unglycosylated form by prokaryotes, preferably E. coli.
- the Fc region of the modified immunoglobulin may consist of the amino acid sequence of SEQ ID NO: 11 (hereinafter, "hyFc").
- the fusion protein may be represented by the following structural formula (I).
- N' is the N terminus of the fusion protein and C' is the C terminus of the fusion protein;
- X is a PD-L1 protein, an extracellular domain of a PD-L1 protein, or a fragment thereof;
- L is a linker
- Y is an immunoglobulin Fc region.
- the fusion protein may consist of the amino acid sequence of SEQ ID NO: 12 or SEQ ID NO: 13.
- the fusion protein of the present invention has the amino acid sequence of SEQ ID NO: 12 and about 70%, 75%, 80%, 85%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97 %, 98% or 99% or more.
- the present invention also provides a nucleic acid molecule encoding the fusion protein.
- the nucleic acid molecule may be a nucleic acid molecule encoding a polypeptide consisting of the amino acid sequence of SEQ ID NO: 12 or SEQ ID NO: 13.
- the nucleic acid molecule may additionally include a signal sequence (or signal peptide) or a leader sequence.
- signal sequence refers to a short peptide present at the N-terminus of a newly synthesized protein classified into a secretory pathway.
- Signal sequences useful in the present invention include an antibody light chain signal sequence, such as antibody 1418 (Gillies et al., J Immunol Meth 1989 125: 191-202), an antibody heavy chain signal sequence, such as the MOPC141 antibody heavy chain signal sequence ( Sakano et al, Nature 1980 286: 676-683), and other signal sequences known in the art (see, eg, Watson et al, Nucleic Acid Research 1984 12:5145-5164).
- the signal peptide is well known in the art for its characterization, and is generally known to contain 16 to 30 amino acid residues, and may contain more or fewer amino acid residues.
- a typical signal peptide consists of three regions: a basic N-terminal region, a central hydrophobic region, and a more polar C-terminal region.
- the central hydrophobic region contains 4 to 12 hydrophobic residues that anchor the signal sequence through the membrane lipid bilayer during migration of the immature polypeptide.
- the signal sequence is cleaved in the lumen of the ER by cellular enzymes commonly known as signal peptidases.
- the signal sequence may be a secretion signal sequence of tPa (tissue plasminogen activation), HSV gDs, or growth hormone.
- tPa tissue plasminogen activation
- HSV gDs growth hormone
- the secretion signal sequence used in higher eukaryotic cells, including mammals may be used, and more preferably, the tPa sequence or the 1st to 18th amino acid sequence of SEQ ID NO: 1 may be used.
- the signal sequence of the present invention can be used by substituting a codon having a high expression frequency in the host cell.
- the present invention provides an expression vector comprising the nucleic acid molecule.
- vector is understood as a nucleic acid means comprising a nucleotide sequence that can be introduced into a host cell, recombination and insertion into the host cell genome, or can replicate spontaneously as an episome.
- the vectors include linear nucleic acids, plasmids, phagemids, cosmids, RNA vectors, viral vectors and analogs thereof.
- examples of viral vectors include, but are not limited to, retroviruses, adenoviruses, and adeno-associated viruses.
- a useful expression vector may be RcCMV (Invitrogen, Carlsbad) or a variant thereof.
- Useful expression vectors include the human cytomegalovirus (CMV) promoter to promote continuous transcription of the gene of interest in mammalian cells, and the bovine growth hormone polyadenylation signal sequence to increase the steady-state level of RNA after transcription. can do.
- the expression vector is pAD15, which is a modified vector of RcCMV.
- the term "host cell” refers to prokaryotic and eukaryotic cells into which recombinant expression vectors can be introduced.
- an appropriate host cell may be transformed or transfected with the DNA sequence of the present invention, and may be used for expression and/or secretion of a target protein.
- Presently preferred host cells that can be used in the present invention are immortal hybridoma cells, NS/0 myeloma cells, 293 cells, Chinese hamster ovary cells (CHO cells), HeLa cells. , CapT cells (human amniotic fluid derived cells) and COS cells.
- transformation and “transfection” refer to the introduction of a nucleic acid (eg, a vector) into a cell by a number of techniques known in the art.
- the present invention provides a composition for preventing or treating an immune disease comprising a fusion protein comprising a PD-L1 protein and a modified immunoglobulin Fc region as an active ingredient.
- the immune disease may be a disease selected from the group consisting of autoimmune diseases, inflammatory diseases, and transplantation rejection diseases of cells, tissues, or organs.
- the autoimmune disease is arthritis [acute arthritis, chronic rheumatoid arthritis, gouty arthritis, acute gouty arthritis, chronic inflammatory arthritis, degenerative arthritis, infectious arthritis, Lyme arthritis, proliferative arthritis, psoriatic arthritis, spondylolisthesis Arthritis, and juvenile-onset rhematoid arthritis, osteoarthritis, arthritis chronica progrediente, deformans arthritis, polyarthritis chronica primaria, reactive arthritis arthritis), and rheumatoid arthritis such as ankylosing spondylitis], inflammatory hyperproliferative skin diseases, plaque psoriasis, gutatte psoriasis, pustular psoriasis, and psoriasis of the nails of the nails, dermatitis including psoriasis, contact dermatitis, chronic contact dermatitis, allergic dermatitis, allergic contact dermatitis, herpetiformis dermatitis, and atopic
- ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇
- NSIP Guillain-Barre syndrome, Berger's disease (IgA nephropathy), idiopathic IgA nephropathy, linear IgA dermatosis, primary biliary Primary biliary cirrhosis, pneumonocirrhosis, autoimmune enteropathy syndrome, celiac disease, coeliac disease, celiac sprue, gluten enteropathy, refractory sprue, idiopathic sprue, cryoglobulinemia, amyotrophic lateral sclerosis; ALS; Autoimmune ear diseases such as Lou Gehrig's disease, coronal artery disease, autoimmune inner ear disease (AGED), autoimmune hearing loss, opsoclonus syndrome myoclonus syndrome (OMS), polychondritis such as refractory or recurrent polychondritis, pulmonary alveolar proteinosis, amyloidosis, scleritis, non-cancerous lymphocytosis primary
- cyclitis such as Fuch's cyclitis, Henoch-Schonlein purpura, human immunodeficiency virus; HIV) infection, echovirus infection, cardiomyopathy, Alzheimer's disease, parvovirus infection, rubella virus infection, post-vaccination syndromes, congenital Ruvola infection, Epstein-Barr virus infection, mumps, Evan's syndrome, autoimmune gonadal failure, Sydenham's chorea, post strep Poststreptococcal nephritis, thromboangitis ubiterans, thyrotoxicosis, tabes dorsalis, chorioiditis, giant cell polymyalgia, endocrine ophthamopathy , chronic hypersensitivity pneumonitis, keratoconjunctivitis sicca, epidemic keratoconjunctivitis, idiopathic nephritic syndrome, minimal change nephropathy, benign familial reperfusion and ischemia
- the autoimmune disease is type 1 diabetes, alopecia areata, anti-phospholipid antibody syndrome, rheumatoid arthritis, psoriasis or psoriatic arthritis, multiple sclerosis, Systemic lupus erythematosus, inflammatory bowel disease, Addison's disease, Graves' disease, Sjogren's syndrome, Guillian-Barre syndrome , Hashimoto's thyroiditis, Myasthenia gravis, inflammatory myopathy, autoimmune vasculitis, autoimmune hepatitis, hemolytic anemia, idiopathic thrombocytopenic purpura (idiopathic thrombocytopenic purpura), primary biliary cirrhosis, scleroderma, vitiligo, pernicious anemia, and chronic digestive disorder (celiac disease) may be selected from the group consisting of there is.
- the inflammatory disease is arthritis, ankylosing spondylitis, reactive arthritis, Reiter's syndrome, crystal arthropathies, Lyme disease, polymyalgia rheumatica (polymyalgia rheumatica), systemic sclerosis, polymyositis, dermatomyositis, polyarteritis nodosa, Wegener's granulomatosis, Churg-Strauss syndrome ), sarcoidosis, atherosclerotic vascular disease, atherosclerosis, ischemic heart disease, myocardial infarction, stroke, peripheral vascular disease (peripheral vascular disease), uveitis (uveitis), corneal disease (corneal disease), ulceris (iritis), iridocyclitis (iridocyclitis) and may be selected from the group consisting of cataracts (cataracts).
- the transplant rejection disease may be a tissue or organ transplant rejection reaction, and the tissue or organ transplant rejection reaction includes bone marrow transplantation, heart transplantation, corneal transplantation, intestinal transplantation, liver transplantation, lung transplantation, pancreatic transplantation, kidney transplantation and It may be selected from among rejection reactions of skin transplantation.
- inflammatory skin disease refers to a disease occurring in the skin by an inflammatory reaction.
- Skin keratinocytes are components that constitute most of the epidermal cells, and they form keratin and are involved in various inflammatory and immune responses by producing various cytokines.
- TNF- ⁇ tumor necrosis factor- ⁇
- IL-1 ⁇ interleukin-1 ⁇
- IL-6 chemokine (CC motif)
- the inflammatory skin disease may be psoriasis or atopic dermatitis, preferably psoriasis.
- psoriasis refers to a disease that forms erythematous papules and plaques of various sizes with clear boundaries that are covered with silvery-white scales on the skin. Histologically, it is one of the chronic inflammatory skin diseases characterized by epithelial hyperplasia, showing various clinical features, and repeating exacerbation and improvement.
- the preferred dosage of the pharmaceutical composition varies depending on the condition and weight of the patient, the degree of disease, the drug form, the route and duration of administration, but may be appropriately selected by those skilled in the art.
- the active ingredient may be included in any amount (effective amount) depending on the use, formulation, purpose of formulation, etc., as long as it can exhibit psoriasis therapeutic activity. It will be determined within the range of 0.001 wt % to 20.0 wt % on a weight basis.
- the term “effective amount” refers to an amount of an active ingredient capable of inducing a psoriasis treatment effect. Such effective amounts can be determined empirically within the ordinary ability of one of ordinary skill in the art.
- the term “treatment” may be used to include both therapeutic treatment and prophylactic treatment. In this case, prevention may be used in the sense of alleviating or reducing a pathological condition or disease of an individual.
- the term “treatment” includes any form of administration or application for treating a disease in a mammal, including a human. The term also includes inhibiting or slowing the disease or its progression; restoring or repairing damaged or missing function, partially or completely relieving the disease; or stimulate inefficient processes; It includes the meaning of alleviating serious diseases.
- terapéuticaally effective amount refers to an amount of a compound or composition effective to prevent or treat a target disease, which is sufficient to treat the disease at a reasonable benefit/risk ratio applicable to medical treatment, and It means an amount that does not cause side effects.
- the level of the effective amount may be determined by the patient's health status, disease type, severity, drug activity, drug sensitivity, administration method, administration time, administration route and excretion rate, treatment period, combination or factors including drugs used concurrently and It may be determined according to factors well known in the medical field.
- a therapeutically effective amount refers to an amount of a drug effective to treat psoriasis.
- composition of the present invention may include a pharmaceutically acceptable carrier, and may additionally include a pharmaceutically acceptable adjuvant, excipient or diluent in addition to the carrier.
- the term "pharmaceutically acceptable” refers to a composition that is physiologically acceptable and does not normally cause gastrointestinal disorders, allergic reactions such as dizziness or similar reactions when administered to humans.
- carriers, excipients and diluents include lactose, dextrose, sucrose, sorbitol, mannitol, xylitol, erythritol, maltitol, starch, gum acacia, alginate, gelatin, calcium phosphate, calcium silicate, cellulose, methyl cellulose, polyvinylpyrrolidone, water, methylhydroxybenzoate, propylhydroxybenzoate, talc, magnesium stearate and mineral oil.
- fillers, anti-agglomeration agents, lubricants, wetting agents, fragrances, emulsifiers and preservatives may be further included.
- compositions of the present invention may be formulated using methods known in the art to enable rapid, sustained or delayed release of the active ingredient upon administration to a mammal.
- Formulations include powders, granules, tablets, emulsions, syrups, aerosols, soft or hard gelatin capsules, sterile injectable solutions, and sterile powder forms.
- composition of the present invention may be formulated in a suitable form together with a pharmaceutically acceptable carrier.
- pharmaceutically acceptable carriers include, for example, carriers for parenteral administration such as water, suitable oils, saline, aqueous glucose and glycol, and the like, and may further include stabilizers and preservatives.
- Suitable stabilizers include antioxidants such as sodium bisulfite, sodium sulfite or ascorbic acid.
- Suitable preservatives are benzalkonium chloride, methyl- or propyl-paraben and chlorobutanol.
- composition according to the present invention can be used as a suspending agent, solubilizer, stabilizer, isotonic agent, preservative, adsorption inhibitor, surfactant, diluent, excipient, pH adjuster, analgesic agent, buffer, if necessary depending on the administration method or formulation. , antioxidants and the like may be included as appropriate.
- Pharmaceutically acceptable carriers and agents suitable for the present invention including those exemplified above, are described in detail in Remington's Pharmaceutical Sciences, latest edition.
- compositions of the present invention may be sterilized according to commonly known sterilization techniques.
- the composition may contain pharmaceutically acceptable auxiliary substances and adjuvants required to control physiological conditions such as pH control, toxicity control agents and the like, for example, sodium acetate, sodium chloride ( sodium chloride), potassium chloride, calcium chloride, sodium lactate, and the like.
- concentration of the fusion protein in such formulations can vary widely, for example up to about 0.5% by weight, typically or at least about 1% to 15% or up to 20%, depending on the particular method of administration selected. Accordingly, the selection may be preferentially based on body fluid volume, viscosities, and the like.
- a preferred dosage for the composition of the present invention is in the range of 0.01 ⁇ g/kg to 10 g/kg per day, or 0.01 mg/kg to 1 g/kg, depending on the patient's condition, body weight, sex, age, patient's severity, and administration route. kg range. Administration may be performed once or divided into several times a day. Such dosages should not be construed as limiting the scope of the invention in any respect.
- compositions of the present invention are mammals and humans, particularly preferably humans.
- the administration route, dosage, and frequency of administration of the fusion protein or fusion protein dimer may be administered to a subject in various ways and amounts depending on the patient's condition and presence or absence of side effects, and the optimal administration method, dosage and frequency of administration are A person skilled in the art can select within an appropriate range.
- composition of the present invention may be administered by any route.
- the compositions of the present invention may be provided to an animal either directly (e.g., by injection, implantation, or local administration at a tissue site, topically) or systemically (e.g., parenterally or orally) by any suitable means. there is.
- the composition of the present invention can be administered intravenously, subcutaneously, ophthalmic, intraperitoneally, intramuscularly, oral, rectal, intraorbital, intracerebral, intracranial, intraspinal, ventricle.
- the composition When given parenterally, such as intraventricular, intrathecal, intracistenal, intracapsular, intranasal or aerosol administration, the composition is preferably aqueous or It is preferred to include portions of physiologically applicable bodily fluid suspensions or solutions. Accordingly, the carrier or vehicle is physiologically acceptable and thus can be added to the composition and delivered to the patient, without adversely affecting the patient's electrolyte and/or volumetric balance. Therefore, as a body fluid medium for the preparation, it may generally contain a physiological saline (physiologic saline).
- physiological saline physiological saline
- a DNA construct (or gene construct) comprising a nucleic acid encoding a fusion protein of the present invention can be used as part of a gene therapy protocol carrying a nucleic acid encoding the fusion protein construct.
- an expression vector for infecting and expressing the fusion protein in vivo in a specific cell type in order to reconstitute or supplement the desired function of the fusion protein can be administered together with any biologically effective carrier, for example, in vivo.
- a viral vector comprising a recombinant retrovirus, an adenovirus, an adeno-associated virus, and herpes simplex virus-1, or a recombinant bacterial plasmid
- the gene of interest may be inserted into a recombinant eukaryotic plasmid.
- the dosage of the nucleic acid encoding the fusion protein of the present invention is in the range of 0.1 mg to 100 mg in humans, preferably 1 mg to 10 mg, and more preferably 2 mg to 10 mg.
- the optimal amount and dosage form can be determined by routine experimentation within the skill of the person skilled in the art.
- the unit dose of the fusion protein of the present invention is 0.1 mg/kg to 1,500 mg/kg in humans, preferably 1 mg/kg to 100 mg/kg, more preferably 5 mg/kg to 20 mg/kg is kg.
- the unit dose may vary depending on the disease to be treated and the presence or absence of side effects. However, the optimal dosage can be determined using routine experimentation.
- Administration of the fusion protein may be by periodic bolus injections, or from an external reservoir (eg, intravenous bag) or internal (eg, bioerodable implant). continuous intravenous, subcutaneous, or intraperitoneal administration of
- composition of the present invention may be administered in combination with other drugs or physiologically active substances having a preventive or therapeutic effect on the disease to be prevented or treated, or may be formulated in the form of a combination formulation with such other drugs.
- the method of preventing or treating a disease using the fusion protein or composition of the present invention may include administering another drug or physiologically active substance having a preventive or therapeutic effect in combination with the fusion protein or composition of the present invention.
- the route of concurrent administration, administration timing, and dosage may be determined according to the type of disease, the disease state of the patient, the purpose of treatment or prevention, and other drugs or physiologically active substances used in combination.
- the present invention provides the use of a fusion protein comprising a PD-L1 protein and a modified immunoglobulin Fc region for producing a pharmaceutical preparation having an effect of preventing or treating an immune disease.
- the present invention also provides a method for preventing or treating an immune disease, comprising administering to a subject a fusion protein comprising a PD-L1 protein and a modified immunoglobulin Fc region, and a pharmaceutically acceptable carrier.
- the therapeutically effective amount includes the specific composition including the type and extent of the response to be achieved, whether or not other agents are used if necessary, the individual's age, weight, general health, sex and diet, administration time, administration route, and composition. It is preferable to apply differently depending on various factors including the secretion rate, treatment period, and drugs used together or concurrently with a specific composition and similar factors well known in the pharmaceutical field. Therefore, it is preferable to determine the effective amount of the composition suitable for the purpose of the present invention in consideration of the foregoing.
- the subject is applicable to any mammal, and the mammal includes not only humans and primates, but also domestic animals such as cattle, pigs, sheep, horses, dogs and cats.
- Example 1 Preparation of a gene construct for production of fusion protein containing PD-L1 protein and modified immunoglobulin Fc region
- a gene construct was prepared for producing a fusion protein in which a human programmed cell death-ligand 1 (PD-L1) protein and a modified immunoglobulin Fc domain were fused.
- PD-L1 gene used a known amino acid sequence (Accession number: Q9NZQ7), and the gene construct including the extracellular domain (19-239 aa) of the PD-L1 protein was prepared by TOP Gene Technologies. (Canada, Quebec).
- Human PD-L1 protein was prepared to be fused to the N-terminus of the modified immunoglobulin Fc region.
- the modified immunoglobulin Fc domain (SEQ ID NO: 11) is a hybrid type of human IgD Fc and human IgG4 Fc, and is characterized by including an IgG1 hinge region (SEQ ID NO: 16) composed of 8 amino acids.
- the fusion protein of the present invention was prepared so that the PD-L1 protein was linked to the modified immunoglobulin Fc region with a peptide linker.
- a human PD-L1 protein and a modified immunoglobulin Fc region linked by a GS linker (SEQ ID NO: 10) consisting of a 7 amino acid sequence to maintain flexibility while inducing dimerization is included.
- a fusion protein (hereinafter, “PD-L1-hyFc21” or “PD-L1-hyFc21 fusion protein”, SEQ ID NO: 12 or 13) was prepared.
- a fusion protein including an immunoglobulin Fc region including the IgD hinge region of SEQ ID NO: 14 (hereinafter, “PD-L1-hyFc5” or “PD-L1-hyFc5 fusion protein”, SEQ ID NO: 15) was used. did.
- a recombinant expression vector was prepared using the gene construct containing the nucleotide encoding the fusion protein.
- the prepared recombinant expression vector was transformed using a gene transfer method (NeonTM kit, 10 ⁇ L, Invitrogen Cat. MPK1096) using a DNA solution in which a DNA solution was suspended in the CHO DG44 cell line and passed through a pulse of high direct current to introduce DNA into the cell. did it Thereafter, HT selection (HT supplement, Invitrogen, 11067-030) and MTX (Methotrexate, Sigma, M8407) amplification steps were performed, and cell passage was performed so that only cells with a high expression rate were selected.
- HT selection HT supplement, Invitrogen, 11067-030
- MTX Metalhotrexate, Sigma, M8407
- HT selection is a selection method in which only transformed cells survive by removing HT from the media
- MTX amplification is a method of amplifying genes by putting MTX at a selected concentration in the passage medium.
- the selected cell pool was subjected to single cell cloning using the limiting dilution cloning method.
- cells were aliquoted to 1 cell/well in a 96 well plate, and cell images were stored on days 0, 7, and 14 using a CSI device (clone selection imager, Molecular Devices) to obtain clones derived from one cell. (clone) was traced back.
- the productivity of the selected single cell-derived cell line was confirmed using Fc ELISA (Human IgG ELISA Quantitation Set, Bethyl, E80-104).
- the final selected 5-6 clones were subjected to batch culture and long-term stability evaluation, and the clones whose stability was confirmed were prepared as RCB (Research Cell Bank).
- the target protein was isolated from the cell culture medium produced from the PD-L1-hyFc5 or PD-L1-hyFc21 suspension cell line obtained in Example 1, and Purified.
- a cell line expressing PD-L1-hyFc21 or PD-L1-hyFc5 fusion protein was used in the same fed-batch culture method in a Glass bioreactor.
- PD-L1-hyFc21 or PD-L1-hyFc5 fusion proteins were produced by culturing at 15 L for 20 days.
- the cell viability of the cell line expressing the fusion protein was measured, and size exclusion chromatography (SE-HPLC) was performed to confirm the final expression level and purity of the target protein.
- the cell line expressing the PD-L1-hyFc21 fusion protein had a maximum cell concentration of 13.9 x 10 6 cells/mL over time (Fig. 2a), and the final The expression level of the recovered fusion protein was confirmed to be 5.6 g/L ( FIG. 2B ).
- the cell line expressing the PD-L1-hyFc5 fusion protein had a maximum cell concentration of 16.7 x 10 6 cells/mL over time (FIG. 3a), and the final expression level of the recovered fusion protein was confirmed to be 2.2 g/L. (Fig. 3b).
- the obtained target protein was confirmed for purity and yield through size exclusion chromatography (SE-HPLC) analysis. As a result, it was confirmed that the purity of the PD-L1-hyFc21 fusion protein was 97.3% and the yield was 30.2%. In comparison, it was confirmed that the purity of the PD-L1-hyFc5 fusion protein was 93.2% and the yield was 5.1% (Table 2).
- the PD-L1-hyFc21 fusion protein showed about 2.5 times higher production than the PD-L1-hyFc5 fusion protein, and the purity of the protein was also high.
- SDS-PAGE sodium dodecyl sulfate polyacrylamide gel electrophoresis
- the fusion protein was diluted with deionized water, mixed with NuPAGETMLDS Sample Buffer (Thermo Fisher Scientific), and loaded on 4-12% Bis-Tris gel (Invitrogen) to 3 ⁇ g/well and electrophoresed. was performed. After electrophoresis, the gel was stained by Coomassie staining method.
- both the purified PD-L1-hyFc21 and PD-L1-hyFc5 fusion proteins were confirmed at a size marker of 98 kDa under non-reducing conditions ( FIG. 4 ).
- the purified PD-L1-hyFc5 fusion protein contained cleaved low-molecular impurities.
- the size-exclusion chromatography test method (Size-exclusion) chromatography, SE-HPLC) was performed. Briefly, the fusion protein was diluted with formulation buffer to 1.0 mg/mL, and then the main peak of the fusion protein was separated using a gel filtration chromatography column (TOSOH TSK-GEL G3000SWxL column, 7.8 mm x 300 mm). The area ratio (% Area) was analyzed.
- Isoelectric point electrophoresis is an electrophoresis method that analyzes separated proteins using the pI value of the protein.
- the pI value refers to the pH value at which a charged protein becomes electrically neutral, which is called the isoelectric point.
- isoelectric point electrophoresis the protein that has reached the isoelectric point does not move any more and stays on the gel and is separated.
- the fusion protein was separated according to the pI value using a pH 3-10 isoelectric point gel (Invitrogen), and the gel after electrophoresis was fixed with a 12% TCA (trichloroacetic acid) solution and then stained with Coomassie staining method. did.
- both the PD-L1-hyFc21 and PD-L1-hyFc5 fusion proteins had pI values in the range of 5.2 to 6.0 ( FIG. 6 ).
- the experiment was performed using the PROTEOSTAT® Thermal Shift Stability Assay Kit.
- the assay kit contains a fluorescent dye that detects protein aggregation, so you can check the temperature at which a large amount of protein aggregates under heat stress conditions.
- the aggregation temperature (tagg) is an indicator of protein stability, and can confirm the stability of the protein structure.
- the aggregation temperature of the PD-L1-hyFc21 fusion protein was confirmed to be 55.8 °C, whereas the aggregation temperature of the PD-L1-hyFc5 fusion protein was confirmed to be 50.7 °C (FIG. 7).
- the PD-L1-hyFc21 fusion protein was structurally superior to heat stability compared to PD-L1-hyFc5.
- the binding ability of PD-L1-hyFc21 or PD-L1-hyFc5 fusion proteins to PD-1 was analyzed using a Jurkat (SHP-1) cell line expressing PD-1. Briefly, Jurkat cells (PathHunter® Jurkat PD-1 (SHP-1), DiscoverX) were aliquoted in 96-well plates and stabilized in a 37 °C 5% CO 2 incubator for 2 hours. Thereafter, PD-L1-hyFc21 or PD-L1-hyFc5 fusion proteins were added so as to become 75 and 600 nM, respectively, and then reacted in an incubator at 37° C. 5% CO 2 for 1 hour. After completion of the reaction, a reagent (PathHunter® Bioassay Detection Kit, DiscoverX) for detecting SHP-1 expressed by PD-1:PD-L1 signaling response was added to measure the luminescence of SHP-1.
- a reagent PathHunter® Bioa
- the group treated with the PD-L1-hyFc21 fusion protein showed a higher degree of luminescence of SHP-1 at both concentrations of 75 and 600 nM compared to the group treated with the PD-L1-hyFc5 fusion protein (FIG. 8) . Accordingly, it was confirmed that the PD-L1-hyFc21 fusion protein had a higher binding ability to PD-1 than the PD-L1-hyFc5 fusion protein. Confirmed.
- the inhibitory ability of the mixed lymphocyte response by the PD-L1-hyFc21 or PD-L1-hyFc5 fusion protein was analyzed. Briefly, donor and recipient PBMCs (peripheral blood mononuclear cells) were prepared and subjected to CTV (CellTraceTM Violet) and CTR (CellTraceTM Far Red) staining for intracellular proteins. Each of the donor and recipient PBMCs was placed as a response cell and a stimulator cell, mixed at a ratio of 1:1, put in a 96-well U-bottom plate, and 0.5 ⁇ M of PD-L1-hyFc21 or PD-L1-hyFc5 fusion protein was added.
- CTV CellTraceTM Violet
- CTR CellTraceTM Far Red
- PD-L1-hyFc21 or PD-L1-hyFc5 fusion proteins were treated in 96-well plates and coated at 4°C for one day.
- CD4 T cells were isolated from PBMCs of normal people using microbeads (MACS), CTV (CellTraceTM Violet, 2.5 ⁇ M) staining for intracellular proteins was performed on the isolated CD4 T cells.
- CD4 T cells stained with CTV were placed on the test plate and cultured in an incubator at 37° C. 5% CO 2 for 3 days. After 4 days, cells from the test plate were harvested and the degree of decrease in CTV fluorescence was analyzed using flow-cytometry.
- the ability of human T cells to inhibit cytokine expression by PD-L1-hyFc21 or PD-L1-hyFc5 fusion proteins was compared under T cell activation conditions using human PBMCs. Briefly, the PD-L1-hyFc21 or PD-L1-hyFc5 fusion protein with anti-CD3 antibody was diluted to 0.5 ⁇ M and coated in a 48-well plate at 4 °C for one day. CD4 T cells were isolated from normal human PBMCs using microbeads (Miltenyi Biotech). CD4 T cells were isolated from normal human PBMCs using microbeads (MACS).
- the isolated CD4 T cells were placed in a test plate and cultured in an incubator at 37° C. 5% CO 2 for 3 days.
- Anti-IFN- ⁇ antibody DuoSet Human IFN-gamma ELISA set, R&D system
- PBS PBS with 0.05% Tween-20
- PBS with 1% BSA was added to block the test plate at room temperature for 2 hours.
- the culture medium was transferred to the CD4 cells on a test plate and reacted at room temperature for 2 hours.
- the detection antibody was added and reacted for 2 hours at room temperature, followed by washing 5 times with PBST.
- the amount of IFN- ⁇ produced in activated human CD4 T cells was significantly reduced compared to the control group (no treatment or hyFc treatment group). was confirmed (Fig. 10b).
- the amount of IFN- ⁇ generated from activated human CD4 T cells was significantly inhibited by about 3 times compared to the group treated with the PD-L1-hyFc5 fusion protein. (Fig. 10b).
- the ability to inhibit the cytokine expression of mouse T cells by the PD-L1-hyFc21 or PD-L1-hyFc5 fusion protein was compared under the mouse T cell activation condition. Briefly, PD-L1-hyFc21 or PD-L1-hyFc5 fusion protein (0.5 ⁇ M) together with 5 ⁇ g/mL of anti-CD3 antibody was placed in a test plate and coated at 4 °C for one day. CD4 T cells were isolated from lymphocytes isolated from the lymph nodes of mice using microbeads (Miltenyi Biotech). After washing the coated plate with PBS, the isolated CD4 T cells were added and cultured in an incubator at 37° C. 5% CO 2 for 3 days.
- Anti-IL-2 antibody (Mouse IL-2 ELISA MAXTM Deluxe, Biolegend) and anti-IFN- ⁇ antibody (Mouse IFNgamma ELISA MAXTM Deluxe, Biolegend) were placed in a new test plate and coated at room temperature.
- the test plate coated the previous day was washed 4 times with washing buffer, and then, assay diluent A was added and blocked at room temperature for 1 hour.
- the CD4 T cell culture medium was transferred and reacted at room temperature for 2 hours.
- the detection antibody was added and reacted with shaking at room temperature for 1 hour, and washed 4 times with washing buffer again.
- IMQ imiquimod
- IMQ cream was applied to both ears of mice daily at 20 mg/mouse/day for 6 days.
- the ear thickness of the mice in each group was measured using a caliper every day for 7 days from the 0th day when the IMQ cream was applied to the 6th day, the end date of the test.
- the changes in the ear thickness of the mice of each group were compared.
- the PD-L1-hyFc21 fusion protein was administered subcutaneously or intravenously on days 0, 1, 3, and 5.
- the anti-IL12p40 antibody was administered intravenously (iv) once on the second day of the test.
- the control group and the experimental group are shown in Table 3 below.
- the ear thickness was suppressed by 51% on the 6th day, the end of the test.
- the group subcutaneously administered with the medium and high doses of 10 mg/kg and 30 mg/kg of PD-L1-hyFc21 fusion protein showed 67% and 66% inhibition, respectively, compared to the IMQ-treated group (IMG-vehicle) ( 12a).
- rtTA-Peli1 psoriasis mouse model In order to evaluate the efficacy of the PD-L1-hyFc21 fusion protein in a psoriasis mouse model of chronic inflammation, the present inventors investigated the administration of Doxycycline in addition to the imiquimod (IMQ)-induced psoriasis mouse model. Accordingly, a psoriasis mouse model (hereinafter, "rtTA-Peli1 psoriasis mouse model”) was used in which long-term chronic psoriasis symptoms were induced by transforming the Peli1 (Pellino homolog 1) gene to be overexpressed.
- psoriasis lesions of the epidermis an increase in inflammatory responses such as an increase in inflammatory cytokines, an increase in the epithelial cell layer, and phagocytes and dendritic cells in the dermis and increased infiltration of Th17 cells.
- mice 4-week-old mice were allowed to drink drinking water containing 5% sucrose and 2 mg/mL doxycycline for 6 months. Saline containing doxycycline was continuously supplied during the test period. Mice not transformed with the Peli gene (hereinafter, "rtTA") were used as a control group.
- the PD-L1-hyFc21 fusion protein was administered subcutaneously once a week for 8 weeks.
- the average thickness of the epithelial layer was 8.74 ⁇ m in the non-psoriasis control group (rtTA), and the average thickness of the epithelial layer was 48.56 ⁇ m in the psoriasis-induced rtTA-Peli1 group (rtTA-Peli1 Vehicle). It was confirmed that the rtTA-Peli1 group (rtTA-Peli1 Vehicle) increased the thickness of the epithelial layer by about 5.6 times compared to the control group ( FIGS. 13a and 13b ).
- the average epithelial layer thickness was 38.29 ⁇ m, 40.18 ⁇ m and 31.74 ⁇ m, respectively, in the psoriasis-induced rtTA-Peli1 group (rtTA) -Peli1 Vehicle), it was confirmed that there was an effect of reducing the thickness of the epithelial layer ( FIGS. 13a and 13b ). However, no dose-dependent effect was observed.
- T cells and macrophages hardly infiltrated into the skin tissue in the control group (rtTA) not induced with psoriasis, and infiltrated into the skin tissue in the psoriasis-induced rtTA-Peli1 group (rtTA-Peli1 Vehicle). It was confirmed that the number of T cells and macrophages increased ( FIG. 14 ). In particular, in the psoriasis-induced rtTA-Peli1 group (rtTA-Peli1 Vehicle), the number of T cells infiltrated into the skin tissue was about 47 ( FIG. 15 ).
- the number of T cells infiltrated into the skin tissue was about 32, 14, and 7, respectively, in a dose-dependent manner. It was confirmed that the number of T cells was significantly reduced (FIG. 15).
- the number of K14 + keratinocytes was 59
- the number of keratin-producing cells was 197.
- the number of keratin-producing cells increased by about 3.3 times compared to the control group (FIG. 16).
- the number of keratinocytes was about 179, 150, and 98, respectively, and the number of keratinocytes decreased in a dose-dependent manner. In particular, it was confirmed that the number of keratin-producing cells was significantly reduced at a dose of 30 mg/kg (FIG. 16).
- the average thickness of the epithelial layer was 23.8 ⁇ m in the non-psoriasis control group (rtTA), and the average epithelial layer thickness was 104.5 ⁇ m in the psoriasis-induced rtTA-Peli1 group (rtTA-Peli1 Vehicle). It was confirmed that the rtTA-Peli1 group (rtTA-Peli1 Vehicle) increased the thickness of the epithelial layer by about 4.4 times compared to the control group ( FIGS. 19a and 19b ).
- the average epithelial layer thickness was about 97.9 ⁇ m, 86.3 ⁇ m and 73.3 ⁇ m, respectively, in the psoriasis-induced rtTA-Peli1 group. It was confirmed that the thickness of the epithelial layer was dose-dependently reduced compared to (rtTA-Peli1 Vehicle) ( FIGS. 19a and 19b ).
- Th17 cell-associated genes such as IL-17A and IL-22 and IL-1 ⁇ and IL- 24, qRT-PCR was performed to confirm changes in mRNA expression of innate immune cell-associated genes.
- the psoriasis-induced rtTA-Peli1 group (rtTA-Peli1 Vehicle) showed increased mRNA expression of Th17 cell-related genes such as L-17A and IL-22 compared to the control group (rtTA), whereas PD In the group administered with the -L1-hyFc21 fusion protein intravenously, it was confirmed that the mRNA expression of the Th17 cell-related gene was reduced ( FIG. 20 ).
- the mRNA expression of innate immune cell-related genes such as IL-1 ⁇ and IL-24 increased in the psoriasis-induced rtTA-Peli1 group (rtTA-Peli1 Vehicle) compared to the control group (rtTA).
- the mRNA expression of Th17 cell-related genes showed a tendency to decrease in the group administered intravenously with the PD-L1-hyFc21 fusion protein ( FIG. 20 ).
- the expression of IL-24 mRNA was significantly reduced in the group administered intravenously with 10 mg/kg of the PD-L1-hyFc21 fusion protein ( FIG. 20 ).
- the PD-L1-hyFc21 fusion protein inhibits the proliferation of CD4 T cells, which is an important factor in the pathogenesis of autoimmune diseases such as psoriasis, through subcutaneous administration or intravenous administration, and suppresses the expression of inflammatory cytokines accompanying the lesion. It has an inhibitory effect, so it was confirmed that it can be used as a therapeutic agent for immune diseases such as psoriasis.
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Abstract
Description
Area (%) | PD-L1-hyFc21 | PD-L1-hyFc5 |
HMW (%) | 7.7 | 31.7 |
Main (%) | 79.5 | 47.8 |
LMW (%) | 9.8 | 20.5 |
공정 | PD-L1-hyFc21 | PD-L1-hyFc5 | ||
검액명 | 순도(SE-HPLC) | 수율 (%) | 순도(SE-HPLC) | 수율 (%) |
배양액 | 79.5 | 100.0 | 47.8 | 100.0 |
최종 정제 | 97.3 | 30.2 | 93.2 | 5.1 |
Group | Inducer | Dose | N | Route | Volume | |
Control | 1 | Vehicle | - | 5 | Subcutaneous | 3 mL/kg |
2 | IMQ | - | 5 | 3 mL/kg | ||
PD-L1-hyFc21 | 3 | IMQ | 3 mg/kg | 5 | Subcutaneous | 3 mL/kg |
4 | IMQ | 10 mg/kg | 5 | 3 mL/kg | ||
5 | IMQ | 30 mg/kg | 5 | 3 mL/kg | ||
6 | IMQ | 3 mg/kg | 5 | Intravenous | 5 mL/kg | |
7 | IMQ | 10 mg/kg | 5 | 5 mL/kg | ||
8 | IMQ | 30 mg/kg | 5 | 5 mL/kg |
Claims (21)
- PD-L1(programmed cell death-ligand 1) 단백질 및 변형된 면역글로불린 Fc 영역을 포함하는 융합 단백질.
- 제 1 항에 있어서,상기 PD-L1 단백질은 PD-L1 단백질의 세포외 도메인(extracellular domain) 또는 이의 단편인 것인, 융합 단백질.
- 제 2 항에 있어서,상기 PD-L1 단백질은 서열번호 1 내지 서열번호 6으로 이루어진 그룹에서 선택되는 아미노산 서열로 이루어진 것이거나, 서열번호 1 내지 서열번호 6으로 이루어진 그룹에서 선택되는 아미노산 서열과 70% 이상의 상동성을 가지는 폴리펩티드인 것인, 융합 단백질.
- 제 1 항에 있어서,상기 PD-L1 단백질은 변형된 면역글로불린의 Fc 영역의 N-말단 또는 C-말단에 융합된 것인, 융합 단백질.
- 제 1 항에 있어서,상기 PD-L1 단백질은 변형된 면역글로불린의 Fc 영역과 링커 펩티드로 연결된 것인, 융합 단백질.
- 제 5 항에 있어서,상기 링커 펩티드는 GGGSGGS (서열번호 10), AAGSGGGGGSGGGGSGGGGS (서열번호 17), GGSGG (서열번호 18), GGSGGSGGS (서열번호 19), GGGSGG (서열번호 20), (G4S)n (n은 1 내지 10의 정수), (GGS)n (n은 1 내지 10의 정수), (GS)n (n은 1 내지 10의 정수), (GSSGGS)n (n은 1 내지 10의 정수), KESGSVSSEQLAQFRSLD (서열번호 21), EGKSSGSGSESKST (서열번호 22), GSAGSAAGSGEF (서열번호 23), (EAAAK)n (n은 1 내지 10의 정수), CRRRRRREAEAC (서열번호 24), A(EAAAK)4ALEA(EAAAK)4A, GGGGGGGG (서열번호 25), GGGGGG (서열번호 26), AEAAAKEAAAAKA (서열번호 27), PAPAP (서열번호 28), (Ala-Pro)n (n은 1 내지 10의 정수), VSQTSKLTRAETVFPDV (서열번호 29), PLGLWA (서열번호 30), TRHRQPRGWE (서열번호 31), AGNRVRRSVG (서열번호 32), RRRRRRRR (서열번호 33), GFLG (서열번호 34) 및 GSSGGSGSSGGSGGGDEADGSRGSQKAGVDE (서열번호 35)으로 이루어진 그룹에서 선택되는 어느 하나 이상의 아미노산 서열로 이루어진 것인, 융합 단백질.
- 제 6 항에 있어서,상기 링커 펩티드는 GGGSGGS (서열번호 10)의 아미노산 서열로 이루어진 것인, 융합 단백질.
- 제 1 항에 있어서,상기 변형된 면역글로불린의 Fc 영역은 IgG1, IgG2, IgG3, IgD 및 IgG4의 Fc 영역 중 어느 하나 또는 이들의 조합인 것인, 융합 단백질.
- 제 1 항에 있어서,상기 변형된 면역글로불린의 Fc 영역은 N-말단에서 C-말단 방향으로 힌지 영역, CH2 도메인 및 CH3 도메인을 포함하며,상기 힌지 영역은 인간 IgG1 힌지 영역을 포함하고,상기 CH2 도메인은 인간 IgD와 인간 IgG4의 CH2 도메인의 아미노산 잔기의 부분을 포함하며,상기 CH3 도메인은 인간 IgG4의 CH3 도메인의 아미노산 잔기의 부분을 포함하는 것인, 융합 단백질.
- 제 1 항에 있어서,상기 변형된 면역글로불린의 Fc 영역은 서열번호 11의 아미노산 서열로 이루어진 것인, 융합 단백질.
- 제 10 항에 있어서,상기 변형된 면역글로불린의 Fc 영역은 서열번호 16의 아미노산 서열로 이루어진 IgG1 힌지 영역을 포함하는 것인, 융합 단백질.
- 제 1 항에 있어서,상기 융합 단백질은 이량체(dimerization)를 형성하는 것인, 융합 단백질.
- 제 1 항에 있어서,상기 융합 단백질은 서열번호 12 또는 서열번호 13의 아미노산 서열로 이루어진 것인, 융합 단백질.
- 제 1 항 내지 제 13 항 중 어느 한 항에 따른 융합 단백질을 코딩하는 핵산 분자.
- 제 14 항에 따른 핵산 분자를 포함하는 발현 벡터.
- 제 15 항의 발현 벡터를 포함하는 숙주 세포.
- 제 1 항 내지 제 13 항 중 어느 한 항에 따른 융합 단백질을 유효성분으로 포함하는 면역질환의 예방 또는 치료용 약학적 조성물.
- 제 17 항에 있어서,상기 조성물은 약학적으로 허용 가능한 담체를 더 포함하는 것인, 약학적 조성물.
- 제 17 항에 있어서,상기 면역질환은 자가면역질환 및 염증성 질환으로 이루어진 군에서 선택되는 것인, 약학적 조성물.
- 제 19 항에 있어서,상기 자가면역질환은 제1형 당뇨병, 원형 탈모증(alopecia areata), 항-인산지질 항체 증후군(antiphospholipid antibody syndrome), 류마티스성 관절염(rheumatoid arthritis), 건선(psoriasis), 건선성 관절염(psoriatic arthritis), 다발성 경화증(multiple scelerosis), 전신 홍반 루푸스(systemic lupus erythematosus), 염증성 장질환(inflammatory bowel disease), 애디슨병(Addison's disease), 그레이브병(Graves' disease), 쇼그렌 증후군(Sjogren's syndrome), 길랑-바레 증후군(Guillian-Barre syndrome), 하시모토 갑상선염(Hashimoto's thyroiditis), 중증근무력증(Myasthenia gravis), 염증성 근육병(inflammatory myophathy), 자가면역성 혈관염(autoimmune vasculitis), 자가면역성 간염(autoimmune hepatitis), 출혈성 빈혈(hemolytic anemia), 특발성 혈소판감소성 자반(idiopathic thrombocytopenic purpura), 일차성 담즙성 간경화증(primary biliary cirrhosis), 피부경화증(scleroderma), 백반증(vitiligo), 악성 빈혈(pernicious anemia) 및 만성 소화장애(celiac disease)로 이루어진 군에서 선택되는 것인, 약학적 조성물.
- 제 19 항에 있어서,상기 염증성 질환은 관절염(arthritis), 강직성 척추염(ankylosing spondylitis), 반응성 관절염(reactive arthritis), 라이터 증후군(Reiter's syndrome), 결정성 관절병증(crystal arthropathies), 라임 질환(Lyme disease), 류마티스성 다발성 근육통(polymyalgia rheumatica), 전신성 경화증(systemic sclerosis), 다발근육염(polymyositis), 피부근염(dermatomyositis), 결절다발동맥염(polyarteritis nodosa), 베게너육아종증(Wegener's granulomatosis), 처르그-스트라우스 증후군(Churg-Strauss syndrome), 사코이드증(sarcoidosis), 죽상경화 혈관 질환(atherosclerotic vascular disease), 아테롬성 동맥경화증(atherosclerosis), 허혈성심장질환(ischaemic heart disease), 심근경색(myocardial infarction), 뇌졸중(stroke), 말초혈관질환(peripheral vascular disease), 포도막염(uveitis), 각막질환(corneal disease), 홍채염(iritis), 홍채모양채염(iridocyclitis) 및 백내장(cataracts)으로 이루어진 군에서 선택되는 것인, 약학적 조성물.
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AU2021210773A AU2021210773A1 (en) | 2020-01-23 | 2021-01-06 | Fusion protein comprising pd-l1 protein and use thereof |
US17/794,832 US20230123454A1 (en) | 2020-01-23 | 2021-01-06 | Fusion protein comprising pd-l1 protein and use thereof |
CN202180010172.5A CN115103685A (zh) | 2020-01-23 | 2021-01-06 | 包含程序性细胞死亡配体1蛋白的融合蛋白及其用途 |
EP21744724.2A EP4186517A4 (en) | 2020-01-23 | 2021-01-06 | FUSION PROTEIN WITH PD-L1 PROTEIN AND ITS USE |
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TW202130359A (zh) | 2021-08-16 |
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AU2021210773A1 (en) | 2022-08-25 |
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US20230123454A1 (en) | 2023-04-20 |
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