CN111534475B - 一种细胞表面偶联抗体的方法及其应用 - Google Patents
一种细胞表面偶联抗体的方法及其应用 Download PDFInfo
- Publication number
- CN111534475B CN111534475B CN201911196567.XA CN201911196567A CN111534475B CN 111534475 B CN111534475 B CN 111534475B CN 201911196567 A CN201911196567 A CN 201911196567A CN 111534475 B CN111534475 B CN 111534475B
- Authority
- CN
- China
- Prior art keywords
- group
- cell
- azide
- antibody
- sialic acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 210000004027 cell Anatomy 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000005859 coupling reaction Methods 0.000 title abstract description 15
- 230000008878 coupling Effects 0.000 title abstract description 14
- 238000010168 coupling process Methods 0.000 title abstract description 14
- IVRMZWNICZWHMI-UHFFFAOYSA-N azide group Chemical group [N-]=[N+]=[N-] IVRMZWNICZWHMI-UHFFFAOYSA-N 0.000 claims abstract description 32
- 150000001875 compounds Chemical class 0.000 claims abstract description 31
- SQVRNKJHWKZAKO-OQPLDHBCSA-N sialic acid Chemical compound CC(=O)N[C@@H]1[C@@H](O)C[C@@](O)(C(O)=O)OC1[C@H](O)[C@H](O)CO SQVRNKJHWKZAKO-OQPLDHBCSA-N 0.000 claims abstract description 30
- SQVRNKJHWKZAKO-UHFFFAOYSA-N beta-N-Acetyl-D-neuraminic acid Natural products CC(=O)NC1C(O)CC(O)(C(O)=O)OC1C(O)C(O)CO SQVRNKJHWKZAKO-UHFFFAOYSA-N 0.000 claims abstract description 16
- 210000000822 natural killer cell Anatomy 0.000 claims description 24
- 238000006243 chemical reaction Methods 0.000 claims description 20
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical compound O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 claims description 10
- 125000003396 thiol group Chemical group [H]S* 0.000 claims description 7
- 125000003277 amino group Chemical group 0.000 claims description 6
- 125000004185 ester group Chemical group 0.000 claims description 5
- 125000005439 maleimidyl group Chemical group C1(C=CC(N1*)=O)=O 0.000 claims description 5
- 230000037353 metabolic pathway Effects 0.000 claims description 5
- 229960002317 succinimide Drugs 0.000 claims description 5
- 210000000170 cell membrane Anatomy 0.000 claims description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 3
- 230000021615 conjugation Effects 0.000 claims description 2
- 238000012258 culturing Methods 0.000 claims description 2
- 238000003786 synthesis reaction Methods 0.000 abstract description 8
- 230000004048 modification Effects 0.000 abstract description 5
- 238000012986 modification Methods 0.000 abstract description 5
- 238000000338 in vitro Methods 0.000 abstract description 4
- 150000001540 azides Chemical class 0.000 abstract description 3
- 108090000790 Enzymes Proteins 0.000 abstract description 2
- 102000004190 Enzymes Human genes 0.000 abstract description 2
- 241001597008 Nomeidae Species 0.000 abstract description 2
- 238000006555 catalytic reaction Methods 0.000 abstract description 2
- 238000007385 chemical modification Methods 0.000 abstract description 2
- 238000010362 genome editing Methods 0.000 abstract description 2
- 229920002521 macromolecule Polymers 0.000 abstract description 2
- 238000002715 modification method Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 14
- 206010028980 Neoplasm Diseases 0.000 description 13
- 101150029707 ERBB2 gene Proteins 0.000 description 11
- 241000699670 Mus sp. Species 0.000 description 8
- 206010006187 Breast cancer Diseases 0.000 description 7
- 208000026310 Breast neoplasm Diseases 0.000 description 7
- 210000002865 immune cell Anatomy 0.000 description 7
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- 238000002560 therapeutic procedure Methods 0.000 description 6
- JGFZNNIVVJXRND-UHFFFAOYSA-N N,N-diisopropylethylamine Substances CCN(C(C)C)C(C)C JGFZNNIVVJXRND-UHFFFAOYSA-N 0.000 description 5
- 230000002147 killing effect Effects 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000006143 cell culture medium Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000001963 growth medium Substances 0.000 description 4
- -1 hexafluorophosphate Chemical compound 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 125000000852 azido group Chemical group *N=[N+]=[N-] 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000001413 cellular effect Effects 0.000 description 3
- 239000012467 final product Substances 0.000 description 3
- 238000009169 immunotherapy Methods 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- PPXUUPXQWDQNGO-UHFFFAOYSA-N 2-azidoacetic acid Chemical compound OC(=O)CN=[N+]=[N-] PPXUUPXQWDQNGO-UHFFFAOYSA-N 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 2
- 239000007821 HATU Substances 0.000 description 2
- 102000003855 L-lactate dehydrogenase Human genes 0.000 description 2
- 108700023483 L-lactate dehydrogenases Proteins 0.000 description 2
- 108010053210 Phycocyanin Proteins 0.000 description 2
- 102100040678 Programmed cell death protein 1 Human genes 0.000 description 2
- 238000002659 cell therapy Methods 0.000 description 2
- 239000012295 chemical reaction liquid Substances 0.000 description 2
- MHMNJMPURVTYEJ-UHFFFAOYSA-N fluorescein-5-isothiocyanate Chemical compound O1C(=O)C2=CC(N=C=S)=CC=C2C21C1=CC=C(O)C=C1OC1=CC(O)=CC=C21 MHMNJMPURVTYEJ-UHFFFAOYSA-N 0.000 description 2
- 230000005746 immune checkpoint blockade Effects 0.000 description 2
- 229910052740 iodine Inorganic materials 0.000 description 2
- 239000011630 iodine Substances 0.000 description 2
- 239000003446 ligand Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- 230000005909 tumor killing Effects 0.000 description 2
- 229910021642 ultra pure water Inorganic materials 0.000 description 2
- 239000012498 ultrapure water Substances 0.000 description 2
- FALRKNHUBBKYCC-UHFFFAOYSA-N 2-(chloromethyl)pyridine-3-carbonitrile Chemical compound ClCC1=NC=CC=C1C#N FALRKNHUBBKYCC-UHFFFAOYSA-N 0.000 description 1
- FPQQSJJWHUJYPU-UHFFFAOYSA-N 3-(dimethylamino)propyliminomethylidene-ethylazanium;chloride Chemical compound Cl.CCN=C=NCCCN(C)C FPQQSJJWHUJYPU-UHFFFAOYSA-N 0.000 description 1
- 102000008096 B7-H1 Antigen Human genes 0.000 description 1
- 108010074708 B7-H1 Antigen Proteins 0.000 description 1
- 102000008203 CTLA-4 Antigen Human genes 0.000 description 1
- 108010021064 CTLA-4 Antigen Proteins 0.000 description 1
- 229940045513 CTLA4 antagonist Drugs 0.000 description 1
- 101100314454 Caenorhabditis elegans tra-1 gene Proteins 0.000 description 1
- 102000000844 Cell Surface Receptors Human genes 0.000 description 1
- 108010001857 Cell Surface Receptors Proteins 0.000 description 1
- 108010019670 Chimeric Antigen Receptors Proteins 0.000 description 1
- 206010050685 Cytokine storm Diseases 0.000 description 1
- 101100136092 Drosophila melanogaster peng gene Proteins 0.000 description 1
- 206010059866 Drug resistance Diseases 0.000 description 1
- 102000003886 Glycoproteins Human genes 0.000 description 1
- 108090000288 Glycoproteins Proteins 0.000 description 1
- 241000699666 Mus <mouse, genus> Species 0.000 description 1
- NQTADLQHYWFPDB-UHFFFAOYSA-N N-Hydroxysuccinimide Chemical compound ON1C(=O)CCC1=O NQTADLQHYWFPDB-UHFFFAOYSA-N 0.000 description 1
- 101710089372 Programmed cell death protein 1 Proteins 0.000 description 1
- 210000001744 T-lymphocyte Anatomy 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000011129 allogeneic cell therapy Methods 0.000 description 1
- 125000000539 amino acid group Chemical group 0.000 description 1
- 238000011130 autologous cell therapy Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 230000010261 cell growth Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 206010052015 cytokine release syndrome Diseases 0.000 description 1
- 230000003013 cytotoxicity Effects 0.000 description 1
- 231100000135 cytotoxicity Toxicity 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000684 flow cytometry Methods 0.000 description 1
- GNBHRKFJIUUOQI-UHFFFAOYSA-N fluorescein Chemical compound O1C(=O)C2=CC=CC=C2C21C1=CC=C(O)C=C1OC1=CC(O)=CC=C21 GNBHRKFJIUUOQI-UHFFFAOYSA-N 0.000 description 1
- 238000000799 fluorescence microscopy Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012074 organic phase Substances 0.000 description 1
- 230000004962 physiological condition Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 229940014800 succinic anhydride Drugs 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/0006—Modification of the membrane of cells, e.g. cell decoration
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2239/00—Indexing codes associated with cellular immunotherapy of group A61K39/46
- A61K2239/31—Indexing codes associated with cellular immunotherapy of group A61K39/46 characterized by the route of administration
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2239/00—Indexing codes associated with cellular immunotherapy of group A61K39/46
- A61K2239/38—Indexing codes associated with cellular immunotherapy of group A61K39/46 characterised by the dose, timing or administration schedule
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2239/00—Indexing codes associated with cellular immunotherapy of group A61K39/46
- A61K2239/46—Indexing codes associated with cellular immunotherapy of group A61K39/46 characterised by the cancer treated
- A61K2239/49—Breast
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K35/00—Medicinal preparations containing materials or reaction products thereof with undetermined constitution
- A61K35/12—Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells
- A61K35/14—Blood; Artificial blood
- A61K35/17—Lymphocytes; B-cells; T-cells; Natural killer cells; Interferon-activated or cytokine-activated lymphocytes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/46—Cellular immunotherapy
- A61K39/461—Cellular immunotherapy characterised by the cell type used
- A61K39/4613—Natural-killer cells [NK or NK-T]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/46—Cellular immunotherapy
- A61K39/464—Cellular immunotherapy characterised by the antigen targeted or presented
- A61K39/4643—Vertebrate antigens
- A61K39/4644—Cancer antigens
- A61K39/464402—Receptors, cell surface antigens or cell surface determinants
- A61K39/464403—Receptors for growth factors
- A61K39/464404—Epidermal growth factor receptors [EGFR]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/46—Cellular immunotherapy
- A61K39/464—Cellular immunotherapy characterised by the antigen targeted or presented
- A61K39/4643—Vertebrate antigens
- A61K39/4644—Cancer antigens
- A61K39/464402—Receptors, cell surface antigens or cell surface determinants
- A61K39/464403—Receptors for growth factors
- A61K39/464406—Her-2/neu/ErbB2, Her-3/ErbB3 or Her 4/ ErbB4
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/32—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against translation products of oncogenes
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/06—Animal cells or tissues; Human cells or tissues
- C12N5/0602—Vertebrate cells
- C12N5/0634—Cells from the blood or the immune system
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/06—Animal cells or tissues; Human cells or tissues
- C12N5/0602—Vertebrate cells
- C12N5/0634—Cells from the blood or the immune system
- C12N5/0646—Natural killers cells [NK], NKT cells
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Cell Biology (AREA)
- Biotechnology (AREA)
- Organic Chemistry (AREA)
- Zoology (AREA)
- Genetics & Genomics (AREA)
- Wood Science & Technology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Microbiology (AREA)
- Animal Behavior & Ethology (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Epidemiology (AREA)
- Medicinal Chemistry (AREA)
- Pharmacology & Pharmacy (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- Hematology (AREA)
- Mycology (AREA)
- Oncology (AREA)
- Virology (AREA)
- Developmental Biology & Embryology (AREA)
- Biophysics (AREA)
- Hospice & Palliative Care (AREA)
- Molecular Biology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Dermatology (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
- Peptides Or Proteins (AREA)
Abstract
本发明公开了一种细胞表面偶联抗体的方法及其应用,包括如下步骤:(1)对天然唾液酸进行化学改造,获得含有叠氮基团的唾液酸衍生物;(2)使细胞吸收上述唾液酸衍生物,获得叠氮修饰细胞;(3)用一连接化合物对抗体进行修饰,获得修饰抗体;(4)将上述修饰抗体与上述叠氮修饰细胞共孵育,即成。本发明通过化学合成手段体外改造天然唾液酸,利用官能团化的唾液酸衍生物实现对细胞表面的抗体修饰。本发明的修饰方法简便,成本低,安全高效,无需复杂的基因编辑或者酶催化操作,并具有普适性,理论上可以实现细胞表面偶联任何抗体或者大分子物质。
Description
技术领域
本发明属于生物工程技术领域,具体涉及一种细胞表面偶联抗体的方法及其应用。
背景技术
随着肿瘤治疗进入细胞免疫疗法时代,人们对于抗击癌症的研究取得重大突破。目前主流的肿瘤免疫治疗可分为细胞疗法和免疫检测点抑制剂疗法,前者按照细胞来源又可分为自体细胞治疗(细胞来自于患者)和异体细胞治疗(细胞来自于第三方供体),一般是从患者或其他人体内提取免疫细胞经改造、扩增后回输患者体内,抗击肿瘤。CAR-T(嵌合抗原受体T细胞)疗法即是这类疗法中的佼佼者,受到广泛的关注和研究。另外一种免疫检查点抑制疗法,如PD-1抗体、PD-L1抗体、CTLA-4抗体等,其原理是通过解除肿瘤对免疫细胞的耐受作用,恢复免疫细胞对肿瘤的识别、杀伤功能达到抗击肿瘤的目的。如今随着国际制药巨头对细胞免疫治疗的不断投入,相关技术将持续突破,细胞治疗市场前景一片光明。但同时也面对诸多挑战,如CAR-T治疗中的细胞因子风暴、脱靶,同时CAR-T在生产过程中操作复杂,技术要求高、难度大等由此带来的高昂治疗费用也非普通家庭能够承担的。PD1免疫检查点阻断疗法存在着耐药以及有效率低,再加上高昂的治疗费用,依然需要不断的技术突破和创新来克服这些困难。
发明内容
本发明的目的在于克服现有技术缺陷,提供一种细胞表面偶联抗体的方法及其应用。
本发明的技术方案如下:
一种细胞表面偶联抗体的方法,包括如下步骤:
(1)对天然唾液酸进行化学改造,获得含有叠氮基团的唾液酸衍生物;
(2)使细胞吸收上述唾液酸衍生物,通过细胞的唾液酸代谢途径将叠氮基团表达于细胞膜的表面,获得叠氮修饰细胞;
(3)用一连接化合物对抗体进行修饰,获得修饰抗体,该连接化合物的一端具有可与巯基或氨基反应的第一活性基团,另一端具有可与叠氮基团发生生物正交反应的第二活性基团,其中第一活性基团与上述抗体上的巯基或氨基反应连接;
(4)将上述修饰抗体与上述叠氮修饰细胞共孵育,使上述修饰抗体的连接化合物的第二基团与叠氮修饰细胞表面的叠氮基团反应连接,即成。
在本发明的一个优选实施方案中,所述含有叠氮基团的唾液酸衍生物包括具有如下结构式的化合物:
在本发明的一个优选实施方案中,所述第一活性基团包括琥珀酰亚胺活性酯基团和马来酰亚胺基团。
进一步优选的,所述连接化合物包括如有如下结构式的化合物:
在本发明的一个优选实施方案中,所述细胞为免疫细胞。
一种细胞,其表面具有通过吸收含有叠氮基团的唾液酸衍生物而经唾液酸代谢途径表达于表面的叠氮基团,该叠氮基团通过一连接化合物连接抗体,该连接化合物的一端具有可与巯基或氨基反应的第一活性基团,另一端具有可与叠氮基团发生生物正交反应的第二活性基团,其中,第一活性基团与上述抗体上的巯基或氨基反应连接,第二基团与上述叠氮基团反应连接。
在本发明的一个优选实施方案中,所述含有叠氮基团的唾液酸衍生物包括具有如下结构式的化合物:
在本发明的一个优选实施方案中,所述第一活性基团包括琥珀酰亚胺活性酯基团和马来酰亚胺基团。
进一步优选的,所述连接化合物包括如有如下结构式的化合物:
在本发明的一个优选实施方案中,其为免疫细胞。
本发明的有益效果是:
1、本发明通过化学合成手段体外改造天然唾液酸,利用官能团化的唾液酸衍生物实现对细胞表面的抗体修饰。
2、本发明的修饰方法简便,成本低,安全高效,无需复杂的基因编辑或者酶催化操作,并具有普适性,理论上可以实现细胞表面偶联任何抗体或者大分子物质。
附图说明
图1为本发明的原理图。
图2为本发明中抗体与连接化合物的连接方式以及抗体连接通过生物正交反应连接细胞的原理图。
图3为本发明实施例1中的FITC-Stau检测细胞表面叠氮基团的原理图。
图4为本发明实施例1中的FITC-Stau对NK细胞表面叠氮唾液酸的荧光成像图。
图5为本发明实施例1中的流式细胞仪检测NK细胞表面偶联anti-Her2的情况图。
图6为本发明实施例1中的偶联Her2的NK细胞对4T1的杀伤情况图。
图7为本发明实施例1中的NK细胞偶联Her2抗体用于小鼠体内乳腺癌的治疗结果图。
具体实施方式
以下通过具体实施方式对本发明的技术方案进行进一步的说明和描述。
实施例1
一、偶联反应机理
利用细胞唾液酸代谢途径,在细胞生长过程中加入含有叠氮基团的唾液酸衍生物,得到表面被修饰了叠氮修饰细胞(Cell-N3)如图1所示。抗体的修饰是根据抗体蛋白氨基酸残链上剩余的氨基或者巯基与连接化合物linker-X中的琥珀酰亚胺活性酯基团或者马来酰亚胺基团反应,而连接化合物另一端含有能与叠氮基团发生生物正交反应的配体基团,完成抗体共价键偶联细胞的目的,
含有叠氮基团的唾液酸衍生物的优选的具体结构式如下:
连接化合物的优选的具体结构式如下:
二、相关分子的合成步骤
9N3-SA的合成参考文献Cheng B,et al.ACS chemical biology,2019,14,2141.进行。
5N3-SA和diN3-SA的合成方法如下:
5N3-SA的合成
1)取反应物1(合成步骤参考文献:Abdu-Allah,et al.Journal of MedicinalChemistry,2008,51,6665.)(500mg)溶于10mLN、N-二甲基甲酰胺(DMF)中,然后加入2-(7-氧化苯并三氮唑)-N,N,N′,N′-四甲基脲六氟磷酸盐(HATU,736mg)、N,N-二异丙基乙胺(DIEA,500mg)和156mg叠氮乙酸,反应在室温下搅拌过夜,然后将反应液浓缩经硅胶柱纯化得到中间体2(300mg)。
2)把300mg中间体2加入到30mL超纯水中,然后加入323mg碘单质粉末,室温搅拌24小时,把反应液萃取、浓缩后经高压制备液相纯化得到100mg终产物5N3-SA。
diN3-SA的合成
1)取反应物3(合成步骤参考文献:Peng W,Paulson J C.Journal of theAmerican Chemical Society,2017,139,12450.)(500mg)溶于10mLDMF中,然后加入HATU691mg、DIEA 470mg和147mg叠氮乙酸,反应在室温下搅拌过夜,然后将反应液浓缩经硅胶柱纯化得到中间体4(280mg)。
2)把280mg中间体4加入到30mL超纯水中,然后加入323mg碘单质粉末,室温搅拌24小时,把反应液萃取、浓缩后经高压制备液相纯化得到80mg终产物diN3-SA。
上述连接化合物可以在一些试剂网站(如成都栢尔康生物科技有限公司、上海毕得医药科技有限公司)上购买或者利用常规的有机合成方法制备。
其中以linker-4为例,其合成路线如下:
具体合成方法为:取500mg Stau溶解在10mL二氯甲烷,然后加入317mg DIEA和123mg丁二酸酐,反应于室温搅拌1小时,将反应液浓缩后即得到产物Stau-1,该产物无需纯化直接进行下一步,将212mg N-羟基丁二酰亚胺(NHS)、354mg(1-(3-二甲氨基丙基)-3-乙基碳二亚胺盐酸盐,EDC)和上一步得到的Stau-1用10mL二氯甲烷溶解后室温反应3小时,然后用乙酸乙酯和水萃取,有机相浓缩后经硅胶柱纯化得120mg产物linker-4。
三、通用偶联步骤:
1,细胞表面叠氮化:
取适量含有叠氮基团的唾液酸衍生物加入到细胞正常培养基中,终浓度为100μM。用该培养基按照正常条件培养细胞24~48小时即得到叠氮修饰细胞Cell-N3,然后用PBS清洗2-3次换成正常培养基备用。
2,抗体的修饰:
抗体用PBS配制浓度为6mg/mL的溶液备用,取50μL已经用DMSO配好的linker(连接化合物)溶液(母液浓度为10mM)试剂加入到1mL已配好的抗体溶液中,室温孵育30分钟。然后加入50μLTrisbuffer(pH8.0,1M)进行淬灭,室温淬灭5分钟即可得到修饰后的修饰抗体IgG-B,溶液备用可直接进行下一步偶联细胞。
3,细胞表面偶联抗体:
取100μL步骤2中所得的修饰抗体溶液,加入到1mL步骤1所得Cell-N3(细胞密℃105左右)中,37℃孵育2小时,在此过程中,抗体连接化合物末端的活性基团与细胞表面的叠氮基发生生物正交反应,该反应在生理条件下即可进行,并且不会与培养基或者生物体内其它的物质分子发生反应,该反应原理如图2所示。PBS清洗2-3次即得到偶联了抗体的细胞。
四、免疫细胞表面偶联特定抗体实现对肿瘤的治疗
利用上述通用偶联步骤中的方法,本发明实现了免疫细胞表面特定抗体的偶联,本实施例以在NK细胞表面连接乳腺癌细胞表面受体Her2的抗体(anti-Her2)为例进行说明。连接化合物选用linker1,含有叠氮基团的唾液酸衍生物用9N3-SA。
1,抗体的修饰:
用PBS将anti-Her2配制成6mg/mL的溶液,取1mL的抗体溶液里面加入50μLlinker1母液(10mM)。室温条件下偶联30分钟,然后加入50μLTrisbuffer(pH8.0,1M)进行室温淬灭5分钟,即得到偶联上linker1的Her2抗体anti-Her2-1inker1,溶液于4℃存放备用。
2,NK细胞的叠氮化
取正常培养的NK细胞分到24孔板中,然后用含有终浓度为100μM的9N3-SA的NK细胞培养基进行正常培养24小时~48小时,细胞经PBS洗3次后换成正常NK培养基即得到修饰了叠氮基团的NK细胞。为了验证细胞被修饰上叠氮基,本实施例合成了能够于叠氮基发生正交反应并且连接有荧光素的配体分子FITC-Stau(如图3所示)。在上述已经修饰好的NK细胞培养基中加入FITC-Stau,终浓度为100μM,37℃孵育2-4小时,然后用PBS清洗3次后利用激光共聚焦观察细胞表面的荧光。结果如图4所示,与对照组细胞相比,未经叠氮唾液酸修饰的细胞表面没有荧光而经叠氮唾液酸修饰的细胞其表面含有很强的荧光信号,结果说明叠氮唾液酸可以被NK细胞吸收并代谢到糖蛋白末端。
FITC-Stau的合成路线如下:
其中FITC为商业易买产品,Stau合成步骤参考文献(Chang,Pamela V.,etal.Journal of the American Chemical Society.2007,129,8400.),具体合成方法为:取200mg FITC溶解在5mLDMF中然后加入209mg Stau和200mg DIEA,反应于室温下搅拌5小时,把反应液浓缩然后经高压制备液相纯化得到100mg终产物FITC-Stau。
3,NK细胞表面偶联抗体
取100μL步骤1中所得的抗体溶液,加入到1mL步骤2所得已经修饰了(细胞密℃105左右)中,37℃孵育2-8小时,PBS清洗2-3次即得到偶联了Her2抗体的NK细胞,anti-Her2-NK。为了验证的NK细胞表面确实连接了Her2抗体,本实施例采用带有藻蓝蛋白标记的APC-anti-Fc作为二抗抗Her2抗体,分别处理偶联了Her2抗体的细胞和未经处理空白的NK细胞作为对照,通过流式细胞仪检测藻蓝蛋白的荧光信号。结果如图5所示,偶联了Her2抗体的NK细胞表面可以明显观察到APC的红色荧光信号,而对照组没有偶联抗体的细胞表面则看不到荧光信号,表明通过本发明实施例的方法成功的把Her2抗体偶联到NK细胞表面。
4,体外检测anti-Her2-NK对乳腺癌细胞的杀伤活性
本实验采用稳定表达Her2蛋白的4T1小鼠乳腺癌细胞作为靶细胞进行体外验证anti-Her2-NK对乳腺癌细胞的杀伤活性,将4T1细胞与正常的NK细胞或anti-Her2-NK细胞以数量比1∶5的比例混合,然后在37℃培养箱中共孵育4h后,用乳酸脱氢酶检测试剂盒检测上清液中乳酸脱氢酶的含量,参照空白组计算细胞毒性。结果如图6所示。
5,anti-Her2-NK在小鼠中对乳腺癌细胞的杀伤情况
用表达有Her2的4T1细胞在Balb/c小鼠体内构建乳腺癌模型,在种瘤后第七天时开始尾静脉注射anti-Her2-NK细胞(此时小鼠肿瘤体积约200mm3),每周注射一次,每次细胞数量为107。对照组小鼠注射正常的NK细胞,空白组注射同等体积的PBS溶液,连续注射三周,记录肿瘤体积变化。结果如图7所示,注射了anti-Her2-NK细胞的实验组小鼠肿瘤体积明显比对照组和空白组小鼠的肿瘤小,说明NK细胞表面偶联了Her2抗体可以增强NK细胞杀死肿瘤细胞的活性,用于癌症的治疗。
以上所述,仅为本发明的较佳实施例而已,故不能依此限定本发明实施的范围,即依本发明专利范围及说明书内容所作的等效变化与修饰,皆应仍属本发明涵盖的范围内。
Claims (4)
1.一种细胞表面偶联抗体的方法,其特征在于:包括如下步骤:
(1)对天然唾液酸进行化学改造,获得含有叠氮基团的唾液酸衍生物,该含有叠氮基团的唾液酸衍生物包括具有如下结构式的化合物:
(2)将上述唾液酸衍生物以100μM的终浓度与细胞共培养24h,通过细胞的唾液酸代谢途径将叠氮基团表达于细胞膜的表面,获得叠氮修饰细胞,该细胞为NK细胞;
(3)用一连接化合物对抗体进行修饰,获得修饰抗体,该连接化合物的一端具有可与巯基或氨基反应的第一活性基团,另一端具有可与叠氮基团发生生物正交反应的第二活性基团,其中第一活性基团与上述抗体上的巯基或氨基反应连接;第一活性基团包括琥珀酰亚胺活性酯基团和马来酰亚胺基团;
(4)将上述修饰抗体与上述叠氮修饰细胞共孵育,使上述修饰抗体的连接化合物的第二基团与叠氮修饰细胞表面的叠氮基团反应连接,即成。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201911196567.XA CN111534475B (zh) | 2019-11-28 | 2019-11-28 | 一种细胞表面偶联抗体的方法及其应用 |
PCT/CN2020/132028 WO2021104414A1 (zh) | 2019-11-28 | 2020-11-27 | 一种细胞表面偶联抗体的方法及其应用 |
US17/828,811 US20220380721A1 (en) | 2019-11-28 | 2022-05-31 | Method for coupling antibody to surface of cell and method for applying cell coupled with the antibody |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201911196567.XA CN111534475B (zh) | 2019-11-28 | 2019-11-28 | 一种细胞表面偶联抗体的方法及其应用 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN111534475A CN111534475A (zh) | 2020-08-14 |
CN111534475B true CN111534475B (zh) | 2022-03-15 |
Family
ID=71952004
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201911196567.XA Active CN111534475B (zh) | 2019-11-28 | 2019-11-28 | 一种细胞表面偶联抗体的方法及其应用 |
Country Status (3)
Country | Link |
---|---|
US (1) | US20220380721A1 (zh) |
CN (1) | CN111534475B (zh) |
WO (1) | WO2021104414A1 (zh) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111534475B (zh) * | 2019-11-28 | 2022-03-15 | 厦门诺康得生物科技有限公司 | 一种细胞表面偶联抗体的方法及其应用 |
CN112675202A (zh) * | 2020-12-28 | 2021-04-20 | 江南大学 | 一种基于靶向配基细胞偶联技术的抗肿瘤免疫细胞及其制备方法与应用 |
CN114657116B (zh) * | 2022-04-13 | 2024-03-19 | 浙江工业大学 | 一种噻唑烷形成化学介导的细胞表面多功能化修饰方法 |
CN114773588A (zh) * | 2022-05-05 | 2022-07-22 | 武汉翱飞科技有限公司 | 一种dbco修饰的聚乙二醇链接剂及其合成方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010118235A1 (en) * | 2009-04-08 | 2010-10-14 | The Regents Of The University Of California | Dna-cell conjugates |
WO2011046946A2 (en) * | 2009-10-13 | 2011-04-21 | Yale University | Bifunctional molecules with antibody-recruiting and entry inhibitory activity against the human immunodeficiency virus |
WO2018147641A1 (ko) * | 2017-02-07 | 2018-08-16 | 한미약품 주식회사 | 비펩티드성 중합체 링커 화합물, 그 링커 화합물을 포함하는 결합체, 및 이들의 제조방법 |
CN110157682A (zh) * | 2019-05-29 | 2019-08-23 | 深圳先进技术研究院 | 人工靶向修饰的car-t细胞及其制备方法与应用 |
CN110475566A (zh) * | 2017-02-02 | 2019-11-19 | 斯克里普斯研究学院 | 工程细胞和使用方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2953645A4 (en) * | 2013-02-07 | 2016-12-28 | Immunomedics Inc | PRO-MEDICINE FORM (P2PDOX) OF HIGHLY POWERFUL 2-PYRROLINODOXORUBICIN CONJUGATED TO ANTIBODIES FOR TARGETED CANCER THERAPY |
US10994006B2 (en) * | 2016-07-08 | 2021-05-04 | The Scripps Research Institute | Desensitizing mast cells by co-presentation of antigens with high affinity mast cell siglec ligands |
DK3706802T3 (da) * | 2017-11-07 | 2024-09-09 | Sellergren Boerje | Lidpid-dobbeltlagsmimik |
CN110128490B (zh) * | 2018-02-09 | 2021-03-16 | 厦门诺康得生物科技有限公司 | 一种用于免疫细胞表面修饰的糖类衍生物及其应用 |
CN108728412B (zh) * | 2018-06-08 | 2021-11-09 | 厦门诺康得生物科技有限公司 | 一种nk细胞表面修改的免疫检查点抑制剂及其应用 |
CN111534475B (zh) * | 2019-11-28 | 2022-03-15 | 厦门诺康得生物科技有限公司 | 一种细胞表面偶联抗体的方法及其应用 |
-
2019
- 2019-11-28 CN CN201911196567.XA patent/CN111534475B/zh active Active
-
2020
- 2020-11-27 WO PCT/CN2020/132028 patent/WO2021104414A1/zh active Application Filing
-
2022
- 2022-05-31 US US17/828,811 patent/US20220380721A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010118235A1 (en) * | 2009-04-08 | 2010-10-14 | The Regents Of The University Of California | Dna-cell conjugates |
WO2011046946A2 (en) * | 2009-10-13 | 2011-04-21 | Yale University | Bifunctional molecules with antibody-recruiting and entry inhibitory activity against the human immunodeficiency virus |
CN110475566A (zh) * | 2017-02-02 | 2019-11-19 | 斯克里普斯研究学院 | 工程细胞和使用方法 |
WO2018147641A1 (ko) * | 2017-02-07 | 2018-08-16 | 한미약품 주식회사 | 비펩티드성 중합체 링커 화합물, 그 링커 화합물을 포함하는 결합체, 및 이들의 제조방법 |
CN110157682A (zh) * | 2019-05-29 | 2019-08-23 | 深圳先进技术研究院 | 人工靶向修饰的car-t细胞及其制备方法与应用 |
Non-Patent Citations (3)
Title |
---|
Metabolic glycoengineering: Sialic acid and beyond;Jian Du等;《Glycobiology》;20090812;第19卷(第12期);第1382-1401页 * |
Practical Considerations, Challenges, and Limitations of Bioconjugation via Azide-Alkyne Cycloaddition;Chad J. Pickens等;《Bioconjug Chem》;20180321;第29卷(第3期);第686-701页 * |
单克隆抗体耦联物治疗肿瘤的研究与进展;马玲娟等;《国际检验医学杂志》;20101030;第31卷(第10期);第1141-1144页 * |
Also Published As
Publication number | Publication date |
---|---|
CN111534475A (zh) | 2020-08-14 |
US20220380721A1 (en) | 2022-12-01 |
WO2021104414A1 (zh) | 2021-06-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN111534475B (zh) | 一种细胞表面偶联抗体的方法及其应用 | |
EP3290440B1 (en) | Bispecific antibody capable of being combined with immune cells to enhance tumor killing capability, and preparation method therefor and application thereof | |
Li et al. | A single-step chemoenzymatic reaction for the construction of antibody–cell conjugates | |
US20220202949A1 (en) | Ligand-targeted cell conjugate (ltcc)-based anti-tumor immune cell, as well as preparation method and use thereof | |
CN101942445B (zh) | 核酸适体衍生物及其在制备药物载体中的应用 | |
CN109939242B (zh) | 抗体前药偶联物及其制备和应用 | |
CN107952080A (zh) | 一种肿瘤靶向多肽-药物偶联衍生物、其制备方法及应用 | |
AU2020442003C1 (en) | A camptothecin drug and its antibody conjugate thereof | |
US11033562B2 (en) | Carbohydrate derivatives used for surface modification of immune cells, use thereof and method thereof | |
US20230310624A1 (en) | Affibody-cytotoxin conjugate for active targeted therapy of tumors, nanoparticle thereof, preparation method thereof and application thereof | |
CN104231069A (zh) | 蛋白质-高分子结合体及其制备方法 | |
US20220356243A1 (en) | Anti-claudin 6 Antibody and Antibody-drug Conjugate | |
CN106554499B (zh) | 一种含二硫键的聚(β-氨基酯)类聚合物基因载体及其合成方法和应用 | |
JP2024505744A (ja) | イオン化可能なカチオン性脂質アナログ材料およびその薬物送達担体としての応用 | |
CN113501889A (zh) | 一种三七多糖阳离子衍生物的制备方法及其应用 | |
EP3688007B1 (en) | Bioconjugation of polypeptides | |
WO2022170834A1 (zh) | 可电离的阳离子脂质类似物材料在作为蛋白药物递送载体中的应用 | |
WO2022111540A1 (zh) | 辐射激活的四价铂配合物及其用途 | |
CN111467322B (zh) | Vb12靶向型西地那非纳米药物的合成方法及应用 | |
CN114652699A (zh) | 一种尺寸转变型纳米递药载体及其制备方法和应用 | |
WO2017008736A1 (zh) | 抗体依赖性细胞介导的细胞毒性增强的奥法木抗体 | |
KR101106756B1 (ko) | 스피루리나로부터 클로로필 a 및 광민감제 제조방법 | |
CN113583189B (zh) | 一种多羟基聚氨酯蛋白质转染试剂、制备方法及其应用 | |
KR101138437B1 (ko) | 스피루리나로부터 클로로필 a 및 광민감제 제조방법 | |
CN114392271A (zh) | 硫酸多糖-叶酸偶联物的制备方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |