WO2023095665A1 - 抗体の分離方法 - Google Patents
抗体の分離方法 Download PDFInfo
- Publication number
- WO2023095665A1 WO2023095665A1 PCT/JP2022/042273 JP2022042273W WO2023095665A1 WO 2023095665 A1 WO2023095665 A1 WO 2023095665A1 JP 2022042273 W JP2022042273 W JP 2022042273W WO 2023095665 A1 WO2023095665 A1 WO 2023095665A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- citrate buffer
- antibody
- solution
- column
- adsorbent
- Prior art date
Links
- 238000002955 isolation Methods 0.000 title abstract 2
- 239000000243 solution Substances 0.000 claims abstract description 127
- 108091008324 binding proteins Proteins 0.000 claims abstract description 39
- 239000007853 buffer solution Substances 0.000 claims abstract description 17
- 239000000872 buffer Substances 0.000 claims abstract description 15
- 239000007979 citrate buffer Substances 0.000 claims description 208
- 239000003463 adsorbent Substances 0.000 claims description 94
- 238000000926 separation method Methods 0.000 claims description 85
- 239000000203 mixture Substances 0.000 claims description 70
- 239000012141 concentrate Substances 0.000 claims description 68
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 51
- 230000007423 decrease Effects 0.000 claims description 51
- 238000005259 measurement Methods 0.000 claims description 45
- 238000000034 method Methods 0.000 claims description 34
- 239000007864 aqueous solution Substances 0.000 claims description 33
- 239000002953 phosphate buffered saline Substances 0.000 claims description 21
- 239000002245 particle Substances 0.000 claims description 18
- 125000003275 alpha amino acid group Chemical group 0.000 claims description 17
- 239000001509 sodium citrate Substances 0.000 claims description 16
- 239000002904 solvent Substances 0.000 claims description 16
- HRXKRNGNAMMEHJ-UHFFFAOYSA-K trisodium citrate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O HRXKRNGNAMMEHJ-UHFFFAOYSA-K 0.000 claims description 16
- 229940038773 trisodium citrate Drugs 0.000 claims description 16
- FWMNVWWHGCHHJJ-SKKKGAJSSA-N 4-amino-1-[(2r)-6-amino-2-[[(2r)-2-[[(2r)-2-[[(2r)-2-amino-3-phenylpropanoyl]amino]-3-phenylpropanoyl]amino]-4-methylpentanoyl]amino]hexanoyl]piperidine-4-carboxylic acid Chemical compound C([C@H](C(=O)N[C@H](CC(C)C)C(=O)N[C@H](CCCCN)C(=O)N1CCC(N)(CC1)C(O)=O)NC(=O)[C@H](N)CC=1C=CC=CC=1)C1=CC=CC=C1 FWMNVWWHGCHHJJ-SKKKGAJSSA-N 0.000 claims description 14
- 238000004811 liquid chromatography Methods 0.000 claims description 14
- LOKCTEFSRHRXRJ-UHFFFAOYSA-I dipotassium trisodium dihydrogen phosphate hydrogen phosphate dichloride Chemical compound P(=O)(O)(O)[O-].[K+].P(=O)(O)([O-])[O-].[Na+].[Na+].[Cl-].[K+].[Cl-].[Na+] LOKCTEFSRHRXRJ-UHFFFAOYSA-I 0.000 claims description 13
- 229920002554 vinyl polymer Polymers 0.000 claims description 13
- 239000000945 filler Substances 0.000 claims description 12
- 101000917858 Homo sapiens Low affinity immunoglobulin gamma Fc region receptor III-A Proteins 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 229920001184 polypeptide Polymers 0.000 claims description 10
- 102000004196 processed proteins & peptides Human genes 0.000 claims description 10
- 108090000765 processed proteins & peptides Proteins 0.000 claims description 10
- 125000003630 glycyl group Chemical group [H]N([H])C([H])([H])C(*)=O 0.000 claims description 8
- 125000000404 glutamine group Chemical group N[C@@H](CCC(N)=O)C(=O)* 0.000 claims description 7
- 125000000539 amino acid group Chemical group 0.000 claims description 6
- 230000027455 binding Effects 0.000 claims description 6
- 238000007792 addition Methods 0.000 claims description 5
- 239000011259 mixed solution Substances 0.000 claims description 5
- 239000012928 buffer substance Substances 0.000 claims description 4
- 238000006467 substitution reaction Methods 0.000 claims description 4
- 150000001413 amino acids Chemical class 0.000 claims description 3
- 238000012217 deletion Methods 0.000 claims description 3
- 230000037430 deletion Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 102000023732 binding proteins Human genes 0.000 claims 10
- 102000014914 Carrier Proteins Human genes 0.000 abstract description 29
- 238000001179 sorption measurement Methods 0.000 abstract description 8
- 239000007788 liquid Substances 0.000 abstract description 7
- 230000009467 reduction Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract 3
- 230000000694 effects Effects 0.000 description 105
- 230000010056 antibody-dependent cellular cytotoxicity Effects 0.000 description 64
- 238000010586 diagram Methods 0.000 description 28
- 230000014759 maintenance of location Effects 0.000 description 21
- 238000002835 absorbance Methods 0.000 description 19
- 229960004641 rituximab Drugs 0.000 description 18
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 description 17
- 230000003247 decreasing effect Effects 0.000 description 17
- 238000005194 fractionation Methods 0.000 description 13
- 229930182830 galactose Natural products 0.000 description 13
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 12
- 229940125644 antibody drug Drugs 0.000 description 12
- 238000010828 elution Methods 0.000 description 12
- 230000001747 exhibiting effect Effects 0.000 description 12
- 230000003213 activating effect Effects 0.000 description 11
- 125000000524 functional group Chemical group 0.000 description 9
- 208000023275 Autoimmune disease Diseases 0.000 description 7
- 206010028980 Neoplasm Diseases 0.000 description 7
- 201000011510 cancer Diseases 0.000 description 7
- 206010039073 rheumatoid arthritis Diseases 0.000 description 7
- 229940119059 actemra Drugs 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 229940082789 erbitux Drugs 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 239000011780 sodium chloride Substances 0.000 description 6
- IVLXQGJVBGMLRR-UHFFFAOYSA-N 2-aminoacetic acid;hydron;chloride Chemical compound Cl.NCC(O)=O IVLXQGJVBGMLRR-UHFFFAOYSA-N 0.000 description 5
- 229920002307 Dextran Polymers 0.000 description 5
- 239000004471 Glycine Substances 0.000 description 5
- 239000008351 acetate buffer Substances 0.000 description 5
- 238000001042 affinity chromatography Methods 0.000 description 5
- 238000004587 chromatography analysis Methods 0.000 description 5
- 229960002449 glycine Drugs 0.000 description 5
- 229960001269 glycine hydrochloride Drugs 0.000 description 5
- -1 polymethacrylamide Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 125000003700 epoxy group Chemical group 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 108060003951 Immunoglobulin Proteins 0.000 description 3
- NQTADLQHYWFPDB-UHFFFAOYSA-N N-Hydroxysuccinimide Chemical compound ON1C(=O)CCC1=O NQTADLQHYWFPDB-UHFFFAOYSA-N 0.000 description 3
- 229920002684 Sepharose Polymers 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 235000001014 amino acid Nutrition 0.000 description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 3
- 210000004978 chinese hamster ovary cell Anatomy 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 3
- 238000011067 equilibration Methods 0.000 description 3
- 102000018358 immunoglobulin Human genes 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 235000018102 proteins Nutrition 0.000 description 3
- 102000004169 proteins and genes Human genes 0.000 description 3
- 108090000623 proteins and genes Proteins 0.000 description 3
- 239000003643 water by type Substances 0.000 description 3
- BWBDAEIIXBEFSS-UHFFFAOYSA-N (2,5-dioxopyrrolidin-1-yl) n-[2-[2-(diethylamino)ethylcarbamoyl]quinolin-6-yl]carbamate Chemical compound C1=CC2=NC(C(=O)NCCN(CC)CC)=CC=C2C=C1NC(=O)ON1C(=O)CCC1=O BWBDAEIIXBEFSS-UHFFFAOYSA-N 0.000 description 2
- SHZGCJCMOBCMKK-UHFFFAOYSA-N D-mannomethylose Natural products CC1OC(O)C(O)C(O)C1O SHZGCJCMOBCMKK-UHFFFAOYSA-N 0.000 description 2
- WQZGKKKJIJFFOK-QTVWNMPRSA-N D-mannopyranose Chemical compound OC[C@H]1OC(O)[C@@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-QTVWNMPRSA-N 0.000 description 2
- 108010087819 Fc receptors Proteins 0.000 description 2
- 102000009109 Fc receptors Human genes 0.000 description 2
- WHUUTDBJXJRKMK-UHFFFAOYSA-N Glutamic acid Natural products OC(=O)C(N)CCC(O)=O WHUUTDBJXJRKMK-UHFFFAOYSA-N 0.000 description 2
- SHZGCJCMOBCMKK-DHVFOXMCSA-N L-fucopyranose Chemical compound C[C@@H]1OC(O)[C@@H](O)[C@H](O)[C@@H]1O SHZGCJCMOBCMKK-DHVFOXMCSA-N 0.000 description 2
- OVRNDRQMDRJTHS-UHFFFAOYSA-N N-acelyl-D-glucosamine Natural products CC(=O)NC1C(O)OC(CO)C(O)C1O OVRNDRQMDRJTHS-UHFFFAOYSA-N 0.000 description 2
- MBLBDJOUHNCFQT-LXGUWJNJSA-N N-acetylglucosamine Natural products CC(=O)N[C@@H](C=O)[C@@H](O)[C@H](O)[C@H](O)CO MBLBDJOUHNCFQT-LXGUWJNJSA-N 0.000 description 2
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 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 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- PFKFTWBEEFSNDU-UHFFFAOYSA-N carbonyldiimidazole Chemical compound C1=CN=CN1C(=O)N1C=CN=C1 PFKFTWBEEFSNDU-UHFFFAOYSA-N 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 230000003013 cytotoxicity Effects 0.000 description 2
- 231100000135 cytotoxicity Toxicity 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- ZDXPYRJPNDTMRX-UHFFFAOYSA-N glutamine Natural products OC(=O)C(N)CCC(N)=O ZDXPYRJPNDTMRX-UHFFFAOYSA-N 0.000 description 2
- 238000004128 high performance liquid chromatography Methods 0.000 description 2
- 230000003100 immobilizing effect Effects 0.000 description 2
- 229940100601 interleukin-6 Drugs 0.000 description 2
- 238000004895 liquid chromatography mass spectrometry Methods 0.000 description 2
- 125000005439 maleimidyl group Chemical group C1(C=CC(N1*)=O)=O 0.000 description 2
- 239000006174 pH buffer Substances 0.000 description 2
- 230000020477 pH reduction Effects 0.000 description 2
- 239000008363 phosphate buffer Substances 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 239000007974 sodium acetate buffer Substances 0.000 description 2
- BHZOKUMUHVTPBX-UHFFFAOYSA-M sodium acetic acid acetate Chemical compound [Na+].CC(O)=O.CC([O-])=O BHZOKUMUHVTPBX-UHFFFAOYSA-M 0.000 description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- JKHVDAUOODACDU-UHFFFAOYSA-N (2,5-dioxopyrrolidin-1-yl) 3-(2,5-dioxopyrrol-1-yl)propanoate Chemical compound O=C1CCC(=O)N1OC(=O)CCN1C(=O)C=CC1=O JKHVDAUOODACDU-UHFFFAOYSA-N 0.000 description 1
- SXGZJKUKBWWHRA-UHFFFAOYSA-N 2-(N-morpholiniumyl)ethanesulfonate Chemical compound [O-]S(=O)(=O)CC[NH+]1CCOCC1 SXGZJKUKBWWHRA-UHFFFAOYSA-N 0.000 description 1
- SHKUUQIDMUMQQK-UHFFFAOYSA-N 2-[4-(oxiran-2-ylmethoxy)butoxymethyl]oxirane Chemical compound C1OC1COCCCCOCC1CO1 SHKUUQIDMUMQQK-UHFFFAOYSA-N 0.000 description 1
- JUIKUQOUMZUFQT-UHFFFAOYSA-N 2-bromoacetamide Chemical compound NC(=O)CBr JUIKUQOUMZUFQT-UHFFFAOYSA-N 0.000 description 1
- 229920000936 Agarose Polymers 0.000 description 1
- 102220624488 Beta-2 adrenergic receptor_Y141F_mutation Human genes 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 102220488661 Dimethylglycine dehydrogenase, mitochondrial_F29I_mutation Human genes 0.000 description 1
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 1
- 108010021472 Fc gamma receptor IIB Proteins 0.000 description 1
- PNNNRSAQSRJVSB-SLPGGIOYSA-N Fucose Natural products C[C@H](O)[C@@H](O)[C@H](O)[C@H](O)C=O PNNNRSAQSRJVSB-SLPGGIOYSA-N 0.000 description 1
- 101000913074 Homo sapiens High affinity immunoglobulin gamma Fc receptor I Proteins 0.000 description 1
- 101000917826 Homo sapiens Low affinity immunoglobulin gamma Fc region receptor II-a Proteins 0.000 description 1
- QNAYBMKLOCPYGJ-REOHCLBHSA-N L-alanine Chemical compound C[C@H](N)C(O)=O QNAYBMKLOCPYGJ-REOHCLBHSA-N 0.000 description 1
- FFEARJCKVFRZRR-BYPYZUCNSA-N L-methionine Chemical compound CSCC[C@H](N)C(O)=O FFEARJCKVFRZRR-BYPYZUCNSA-N 0.000 description 1
- 102100029205 Low affinity immunoglobulin gamma Fc region receptor II-b Human genes 0.000 description 1
- 239000007987 MES buffer Substances 0.000 description 1
- OVRNDRQMDRJTHS-RTRLPJTCSA-N N-acetyl-D-glucosamine Chemical compound CC(=O)N[C@H]1C(O)O[C@H](CO)[C@@H](O)[C@@H]1O OVRNDRQMDRJTHS-RTRLPJTCSA-N 0.000 description 1
- OVRNDRQMDRJTHS-FMDGEEDCSA-N N-acetyl-beta-D-glucosamine Chemical compound CC(=O)N[C@H]1[C@H](O)O[C@H](CO)[C@@H](O)[C@@H]1O OVRNDRQMDRJTHS-FMDGEEDCSA-N 0.000 description 1
- SQVRNKJHWKZAKO-PFQGKNLYSA-N N-acetyl-beta-neuraminic acid Chemical compound CC(=O)N[C@@H]1[C@@H](O)C[C@@](O)(C(O)=O)O[C@H]1[C@H](O)[C@H](O)CO SQVRNKJHWKZAKO-PFQGKNLYSA-N 0.000 description 1
- SQVRNKJHWKZAKO-LUWBGTNYSA-N N-acetylneuraminic acid Chemical compound CC(=O)N[C@@H]1[C@@H](O)CC(O)(C(O)=O)O[C@H]1[C@H](O)[C@H](O)CO SQVRNKJHWKZAKO-LUWBGTNYSA-N 0.000 description 1
- 102220491984 Phospholipid scramblase 1_Y74F_mutation Human genes 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 108010076504 Protein Sorting Signals Proteins 0.000 description 1
- 102220484312 Replication stress response regulator SDE2_K165E_mutation Human genes 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 241000194005 Streptococcus sp. 'group G' Species 0.000 description 1
- 102220599995 Succinate dehydrogenase [ubiquinone] cytochrome b small subunit, mitochondrial_S68P_mutation Human genes 0.000 description 1
- 101710120037 Toxin CcdB Proteins 0.000 description 1
- 102220483597 Troponin I, cardiac muscle_K40Q_mutation Human genes 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 235000004279 alanine Nutrition 0.000 description 1
- 229940120638 avastin Drugs 0.000 description 1
- 229960000397 bevacizumab Drugs 0.000 description 1
- INLLPKCGLOXCIV-UHFFFAOYSA-N bromoethene Chemical compound BrC=C INLLPKCGLOXCIV-UHFFFAOYSA-N 0.000 description 1
- 102200061322 c.551A>G Human genes 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 229960005395 cetuximab Drugs 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 229920001429 chelating resin Polymers 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004440 column chromatography Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 235000018417 cysteine Nutrition 0.000 description 1
- XUJNEKJLAYXESH-UHFFFAOYSA-N cysteine Natural products SCC(N)C(O)=O XUJNEKJLAYXESH-UHFFFAOYSA-N 0.000 description 1
- 230000001472 cytotoxic effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003480 eluent Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000007850 fluorescent dye Substances 0.000 description 1
- 238000001215 fluorescent labelling Methods 0.000 description 1
- 125000002485 formyl group Chemical group [H]C(*)=O 0.000 description 1
- 150000002256 galaktoses Chemical class 0.000 description 1
- 238000010353 genetic engineering Methods 0.000 description 1
- 235000013922 glutamic acid Nutrition 0.000 description 1
- 239000004220 glutamic acid Substances 0.000 description 1
- 125000000291 glutamic acid group Chemical group N[C@@H](CCC(O)=O)C(=O)* 0.000 description 1
- 230000013595 glycosylation Effects 0.000 description 1
- 238000006206 glycosylation reaction Methods 0.000 description 1
- 125000005179 haloacetyl group Chemical group 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229940022353 herceptin Drugs 0.000 description 1
- 210000004408 hybridoma Anatomy 0.000 description 1
- LFKYBJLFJOOKAE-UHFFFAOYSA-N imidazol-2-ylidenemethanone Chemical group O=C=C1N=CC=N1 LFKYBJLFJOOKAE-UHFFFAOYSA-N 0.000 description 1
- 230000036737 immune function Effects 0.000 description 1
- 229940072221 immunoglobulins Drugs 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229960000598 infliximab Drugs 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- PGLTVOMIXTUURA-UHFFFAOYSA-N iodoacetamide Chemical compound NC(=O)CI PGLTVOMIXTUURA-UHFFFAOYSA-N 0.000 description 1
- 238000006317 isomerization reaction Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000007561 laser diffraction method Methods 0.000 description 1
- 239000003446 ligand Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229930182817 methionine Natural products 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229950006780 n-acetylglucosamine Drugs 0.000 description 1
- 108010068617 neonatal Fc receptor Proteins 0.000 description 1
- 229940060155 neuac Drugs 0.000 description 1
- CERZMXAJYMMUDR-UHFFFAOYSA-N neuraminic acid Natural products NC1C(O)CC(O)(C(O)=O)OC1C(O)C(O)CO CERZMXAJYMMUDR-UHFFFAOYSA-N 0.000 description 1
- 229920001542 oligosaccharide Polymers 0.000 description 1
- 150000002482 oligosaccharides Chemical class 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 229940116176 remicade Drugs 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 102220332718 rs1008906897 Human genes 0.000 description 1
- 102220198279 rs1057519949 Human genes 0.000 description 1
- 102200109041 rs1057519996 Human genes 0.000 description 1
- 102220222791 rs1060501227 Human genes 0.000 description 1
- 102200012136 rs111033715 Human genes 0.000 description 1
- 102220037950 rs111418068 Human genes 0.000 description 1
- 102220042068 rs113083991 Human genes 0.000 description 1
- 102220253397 rs113384442 Human genes 0.000 description 1
- 102220004986 rs121913549 Human genes 0.000 description 1
- 102220004441 rs121918684 Human genes 0.000 description 1
- 102220229644 rs150348015 Human genes 0.000 description 1
- 102220016887 rs370899710 Human genes 0.000 description 1
- 102200161734 rs527236152 Human genes 0.000 description 1
- 102220041035 rs587778580 Human genes 0.000 description 1
- 102220050044 rs587783406 Human genes 0.000 description 1
- 102200124875 rs59151893 Human genes 0.000 description 1
- 102220082345 rs747846279 Human genes 0.000 description 1
- 102220257927 rs749807415 Human genes 0.000 description 1
- 102220081221 rs863223531 Human genes 0.000 description 1
- 102200072475 rs879255648 Human genes 0.000 description 1
- 102220171015 rs886048327 Human genes 0.000 description 1
- 102220149728 rs886061035 Human genes 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 239000008362 succinate buffer Substances 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 229960003989 tocilizumab Drugs 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229960000575 trastuzumab Drugs 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K1/00—General methods for the preparation of peptides, i.e. processes for the organic chemical preparation of peptides or proteins of any length
- C07K1/14—Extraction; Separation; Purification
- C07K1/16—Extraction; Separation; Purification by chromatography
- C07K1/22—Affinity chromatography or related techniques based upon selective absorption processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/281—Sorbents specially adapted for preparative, analytical or investigative chromatography
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/705—Receptors; Cell surface antigens; Cell surface determinants
- C07K14/70503—Immunoglobulin superfamily
- C07K14/70535—Fc-receptors, e.g. CD16, CD32, CD64 (CD2314/705F)
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K17/00—Carrier-bound or immobilised peptides; Preparation thereof
- C07K17/02—Peptides being immobilised on, or in, an organic carrier
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/26—Conditioning of the fluid carrier; Flow patterns
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/26—Conditioning of the fluid carrier; Flow patterns
- G01N30/28—Control of physical parameters of the fluid carrier
- G01N30/34—Control of physical parameters of the fluid carrier of fluid composition, e.g. gradient
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/88—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86
Definitions
- the present invention relates to an antibody separation method using an antibody adsorbent. More specifically, the present invention relates to an antibody separation method in which the step of eluting antibodies adsorbed on the antibody adsorbent is optimized.
- Antibody drugs are drugs that use antibodies (immunoglobulins), which are molecules responsible for immune functions in the body. Antibody drugs bind to target molecules with high specificity and affinity due to the diversity of antibody variable regions. For this reason, antibody drugs have few side effects, and in recent years, the number of diseases to which antibody drugs can be applied has expanded, and the market is expanding rapidly.
- antibodies immunoglobulins
- Antibodies used in antibody drugs are manufactured by culturing cells capable of expressing the antibody obtained by genetic engineering (e.g., Chinese hamster ovary cells) and purifying them to a high degree of purity using column chromatography, etc. do.
- genetic engineering e.g., Chinese hamster ovary cells
- Non-Patent Document 1 Fractionation is required for each adsorption activity to the graphic carrier.
- fractionation using affinity chromatography is based on the affinity between the affinity ligand and the antibody.
- Preparative fractionation may be possible.
- the affinity chromatography method using an antibody adsorbent containing an insoluble porous carrier and an Fc-binding protein immobilized on the carrier differences in sugar chain structures (e.g., differences in ADCC (antibody-dependent cellular cytotoxicity) activity ), separation and fractionation of antibodies are possible (Patent Document 1).
- the antibody adsorbed on the antibody adsorbent is eluted with a linear gradient that continuously lowers the pH.
- linear gradient elution is applied, the separability of elution peaks decreases, and it takes a long time to fractionate antibodies, making it difficult to process a large amount of antibodies.
- An object of the present invention is to solve the problem of antibody-dependent cytotoxic activity due to differences in sugar chain structure in an affinity chromatography method using an antibody adsorbent containing an insoluble porous carrier and an Fc-binding protein immobilized on the carrier.
- the object is to provide a method capable of large-scale fractionation of antibodies based on differences.
- the antibody adsorbed on the antibody adsorbent is eluted with a step gradient that gradually decreases the pH, and the range of decrease is optimized. , have completed the present invention.
- the method is a step gradient that decreases stepwise, and the range of decrease in pH is 0.1 or more and less than 1.
- [2] The method according to [1], wherein the insoluble porous carrier has a volume average particle size of 30 to 150 ⁇ m.
- the buffer solution has a buffering capacity in the range of pH 3.0 or more and 6.0 or less and contains a buffer substance having multiple pKas within the above range. described method.
- [4] The method according to any one of [1] to [3], wherein the ratio of the mass of the antibody to the volume of the antibody adsorbent is 1 mg/1.0 mL to 50 mg/0.1 mL.
- [5] The method of any one of [1] to [4], wherein the Fc-binding protein is human Fc ⁇ RIIIa.
- antibody composition having binding activity to the above antibody, wherein the following citrate buffer having a pH of 4.0 or less when the monoclonal antibody solution is fractionated under the following measurement conditions: An antibody composition containing 15% by mass or more of an antibody eluted in a liquid, based on the total mass of the antibody composition. [8] An antibody composition containing 15% by mass or more of an antibody detected at a retention time of 750 minutes or more when a monoclonal antibody solution is fractionated under the following measurement conditions, based on the total mass of the antibody composition. , antibody composition.
- An antibody composition the antibody eluted with the following citrate buffer having a pH of 4.2 or higher when the monoclonal antibody solution is fractionated under the following measurement conditions, the total mass of the antibody composition An antibody composition containing 15% by mass or more of.
- a concentrate of an antibody solution wherein the antibody solution and the concentrate are eluted with the following citrate buffer having a pH of 4.0 or less when the monoclonal antibody solution is fractionated under the following measurement conditions.
- a concentrate comprising an antibody, wherein the content of said antibody relative to the total amount of said concentrate is at least twice the content of said antibody relative to the total amount of said antibody solution.
- An antibody solution concentrate wherein the antibody solution and the concentrate contain an antibody detected at a retention time of 750 minutes or more when the monoclonal antibody solution is fractionated under the following measurement conditions, and the concentration is A concentrate, wherein the content of said antibody relative to the total mass of the product is at least twice the content of said antibody relative to the total volume of said antibody solution.
- a concentrate of an antibody solution wherein the antibody solution and the concentrate are eluted with the following citrate buffer having a pH of 4.2 or higher when the monoclonal antibody solution is fractionated under the following measurement conditions.
- a concentrate comprising an antibody, wherein the content of said antibody relative to the total amount of said concentrate is at least twice the content of said antibody relative to the total amount of said antibody solution.
- An antibody solution concentrate wherein the antibody solution and the concentrate contain an antibody detected at a retention time of less than 750 minutes when the monoclonal antibody solution is fractionated under the following measurement conditions, and the concentration A concentrate, wherein the content of said antibody relative to the total mass of the product is at least twice the content of said antibody relative to the total volume of said antibody solution.
- An antibody composition wherein the antibody eluted with the following citrate buffer solution having a pH of 4.2 or higher when the monoclonal antibody solution is fractionated under the following measurement conditions, the total mass of the antibody composition An antibody composition containing 15% by mass or more of.
- a concentrate of an antibody solution wherein the antibody solution and the concentrate are eluted with the following citrate buffer having a pH of 4.0 or less when the monoclonal antibody solution is fractionated under the following measurement conditions.
- a concentrate comprising an antibody, wherein the content of said antibody relative to the total amount of said concentrate is at least twice the content of said antibody relative to the total amount of said antibody solution.
- An antibody solution concentrate wherein the antibody solution and the concentrate contain an antibody detected at a retention time of 800 minutes or more when the monoclonal antibody solution is fractionated under the following measurement conditions, and the concentration is A concentrate, wherein the content of said antibody relative to the total mass of the product is at least twice the content of said antibody relative to the total volume of said antibody solution.
- a concentrate of an antibody solution wherein the antibody solution and the concentrate are eluted with the following citrate buffer having a pH of 4.2 or higher when the monoclonal antibody solution is fractionated under the following measurement conditions.
- a concentrate comprising an antibody, wherein the content of said antibody relative to the total amount of said concentrate is at least twice the content of said antibody relative to the total amount of said antibody solution.
- An antibody solution concentrate wherein the antibody solution and the concentrate contain an antibody detected at a retention time of less than 800 minutes when the monoclonal antibody solution is fractionated under the following measurement conditions, and the concentration A concentrate, wherein the content of said antibody relative to the total mass of the product is at least twice the content of said antibody relative to the total volume of said antibody solution.
- the antibody adsorbed on the adsorbent is is eluted with a step gradient that decreases stepwise with a decrease width of 0.1 or more and less than 1.
- the desired structure e.g. sugar chain structure
- activity e.g. ADCC activity or CDC (complement-dependent Antibodies having sexual cytotoxicity) activity
- ADCC activity or CDC complement-dependent Antibodies having sexual cytotoxicity
- the insoluble porous carrier of the present invention has a large particle size and is porous, it is possible to further improve dynamic binding capacity (DBC) and reduce pressure loss. can.
- DBC dynamic binding capacity
- the present invention is useful as a preparative method for large-scale production of antibodies used in industrial production of antibody drugs.
- FIG. 1 is a diagram showing a pH approximation curve of a citrate buffer.
- FIG. 2 is a diagram showing step gradients performed in Examples 1 to 6 and Comparative Example 1.
- FIG. 3 is a diagram showing the separation pattern of the FcR36i_Cys column in Example 1 (Rituxan, pH drop width 0.5).
- FIG. 4 is a diagram showing the result (separation pattern) of applying the F1 fraction and F2 fraction of FIG. 3 to an FcRIIIA column.
- FIG. 5 is a diagram showing the separation pattern of the FcR36i_Cys column in Example 2 (Rituxan, pH drop width 0.2).
- FIG. 6 is a diagram showing the results (separation pattern) of applying the F1 to F4 fractions of FIG. 5 to an FcRIIIA column.
- FIG. 7 is a diagram showing the separation pattern of the FcR36i_Cys column in Comparative Example 1 (Rituxan, pH decrease width 1.0).
- FIG. 8 is a diagram showing the result (separation pattern) of subjecting the F1 fraction in FIG. 7 to an FcRIIIA column.
- FIG. 9 is a diagram showing the separation pattern of the FcR36i_Cys column in Example 3 (Actemra, pH drop width 0.5).
- FIG. 10 is a diagram showing the results (separation pattern) of applying the F1 to F3 fractions of FIG.
- FIG. 11 is a diagram showing the separation pattern of the FcR36i_Cys column in Example 4 (Actemra, pH drop width 0.2).
- FIG. 12 is a diagram showing the results (separation pattern) of applying the F1 to F6 fractions of FIG. 11 to an FcRIIIA column.
- FIG. 13 is a diagram showing the separation pattern of the FcR36i_Cys column in Example 5 (Erbitux, pH drop width 0.5).
- FIG. 14 is a diagram showing the results (separation pattern) of applying the F1 fraction and F2 fraction of FIG. 13 to an FcRIIIA column.
- FIG. 11 is a diagram showing the separation pattern of the FcR36i_Cys column in Example 4 (Actemra, pH drop width 0.2).
- FIG. 12 is a diagram showing the results (separation pattern) of applying the F1 to F6 fractions of FIG. 11 to an FcRIIIA column.
- FIG. 13 is a diagram
- FIG. 15 is a diagram showing the separation pattern of the FcR36i_Cys column in Example 6 (Erbitux, pH drop width 0.2).
- FIG. 16 is a diagram showing the results (separation pattern) of applying the F1 to F4 fractions of FIG. 15 to an FcRIIIA column.
- FIG. 17 shows the step gradients performed in Examples 7-11.
- FIG. 18 is a diagram showing the separation pattern of the FcR36i_Cys column in Example 7 (Rituxan, pH decrease width 0.2).
- FIG. 19 is a diagram showing the results (separation pattern) of applying the F1 to F3 fractions of FIG. 18 to an FcRIIIA column.
- FIG. 20 is a diagram showing the separation pattern of the FcR36i_Cys column in Example 8 (Rituxan, pH decrease width 0.2).
- FIG. 21 is a diagram showing the results (separation pattern) of applying the F1 to F4 fractions of FIG. 20 to an FcRIIIA column.
- FIG. 22 is a diagram showing the separation pattern of the FcR36i_Cys column in Example 9 (Rituxan, pH decrease width 0.2).
- FIG. 23 is a diagram showing the results (separation pattern) of applying the F1 to F4 fractions of FIG. 22 to an FcRIIIA column.
- FIG. 24 is a diagram showing the separation pattern of the FcR36i_Cys column in Example 10 (Rituxan, pH decrease width 0.2).
- FIG. 25 is a diagram showing the results (separation patterns) of applying the F1 to F6 fractions of FIG. 24 to an FcRIIIA column.
- FIG. 26 is a diagram showing the separation pattern of the FcR36i_Cys column in Example 11 (Rituxan, pH drop width 0.2).
- FIG. 27 is a diagram showing the results (separation pattern) of applying the F1 to F6 fractions of FIG. 26 to an FcRIIIA column.
- 28 is a diagram showing the proportion of sugar chain structures possessed by antibodies contained in the F2 fraction of FIG. 18 and the F1, F2 and F4 fractions of FIG. 20.
- FIG. 26 is a diagram showing the separation pattern of the FcR36i_Cys column in Example 11 (Rituxan, pH drop width 0.2).
- FIG. 27 is a diagram showing the results (separation pattern) of applying the F1 to F6 fractions of FIG. 26 to an FcRIIIA column.
- 28 is a
- the present embodiment a mode for carrying out the present invention (hereinafter simply referred to as "the present embodiment”).
- the following embodiments are examples for explaining the present invention, and are not intended to limit the present invention to the following contents.
- the present invention can be appropriately modified and implemented within the scope of its gist.
- the antibody separation method comprises adding a solution containing an antibody to a column filled with an antibody adsorbent containing an insoluble porous carrier and an Fc-binding protein immobilized on the carrier, and removing the antibody.
- the pH gradient is the pH of the buffer solution.
- the insoluble porous carrier in the present invention may be a substance capable of immobilizing an Fc-binding protein and insoluble in the solution or solvent used for antibody adsorption/elution. It may be a carrier derived from an inorganic substance, or a carrier derived from a natural organic polymer substance such as cellulose, agarose, dextran, or polyacrylic acid, polystyrene, polyacrylamide, polymethacrylamide, Carriers derived from synthetic organic polymeric substances such as polymethacrylates and vinyl polymers may also be used.
- the insoluble porous carrier is a porous carrier.
- porous carrier means a sponge-like carrier having pores on its surface and a cavity inside. More specifically, the porous carrier of the present invention may have a porosity of 30% or more and 95% or less (preferably 50% or more and 95% or less).
- the porosity can be calculated, for example, by the steps shown in (a) to (e) below, which are common methods in the field of liquid chromatography (International Publication No. 2017/141910).
- the volume average particle size of the insoluble porous carrier may be 30-150 ⁇ m. When the volume average particle size is within this range, the dynamic adsorption amount can be further improved and the pressure loss can be reduced.
- the volume average particle size of the insoluble porous carrier can be obtained by measuring the particle size distribution using a laser diffraction method.
- the Fc-binding protein to be immobilized on the insoluble porous carrier refers to a protein that has binding properties to the Fc region of an antibody (immunoglobulin). , and Protein G derived from group G streptococcus. Further, when the Fc-binding protein is a human Fc receptor, specific examples thereof include human Fc ⁇ RI, human Fc ⁇ RIIa, human Fc ⁇ RIIb, human Fc ⁇ RIIIa, and human FcRn.
- human Fc ⁇ RIIIa is a human Fc receptor capable of recognizing differences in sugar chain structures possessed by antibodies (for example, structures contributing to ADCC (antibody-dependent cellular cytotoxicity) activity), immobilized on an insoluble porous carrier and the carrier.
- the antibody adsorbent containing the human Fc ⁇ RIIIa can be separated based on the difference in the sugar chain structure of the antibody (for example, the difference in ADCC activity) (Japanese Patent Application Laid-Open No. 2018-197224), so the Fc binding protein in the present invention It can be said that this is a preferred embodiment.
- differences in the sugar chain structure include the presence or absence of galactose residues at non-reducing terminals and the difference in the number of galactose residues.
- the Fc-binding protein in the present invention (1) At least the extracellular region of native human Fc ⁇ RIIIa (amino acid residues from the 17th glycine residue (Gly) to the 192nd glutamine residue (Gln) in the amino acid sequence set forth in SEQ ID NO: 1) polypeptide, (2) including at least the extracellular region of native human Fc ⁇ RIIIa, but having one or more amino acid residue substitutions, deletions, insertions or additions in the amino acid residues constituting the extracellular region, and antibody binding (3) a polypeptide having activity, and (3) containing at least the extracellular region of native human Fc ⁇ RIIIa, having 70% or more homology with the amino acid sequence from 17th to 192nd amino acids, and binding activity to an antibody and a polypeptide having
- one or several is, for example, 1 or more and 40 or less, 1 or more and 30 or less, 1 or more and 20 or less, or 1 or more and 10 or less (10, 9, 8 , any of 7, 6, 5, 4, 3, 2 and 1).
- the homology of the amino acid sequences in (3) above may be 70% or higher, and may be higher (eg, 80% or higher, 85% or higher, 90% or higher, or 95% or higher). Alkali resistance is improved when the Fc-binding protein is the protein shown in (3).
- N-hydroxysuccinimide (NHS) activated ester is added to the surface of the insoluble porous carrier.
- group epoxy group, carboxyl group, maleimide group, haloacetyl group, tresyl group, formyl group, haloacetamide (iodoacetamide, bromoacetamide, etc.) under appropriate reaction conditions. It may be produced by covalently bonding an Fc-binding protein and an insoluble porous carrier via a group.
- a commercially available carrier for chromatography preliminarily provided with an activated functional group may be covalently bonded to the Fc-binding protein.
- Commercially available carriers with activated functional groups include TOYOPEARL AF-Epoxy-650M, TOYOPEARL AF-Tresyl-650M (both manufactured by Tosoh Corporation), HiTrap NHS-activated HP Columns, NHS-activated Sepharose 4 Fast Flow, Epo xy -activated Sepharose 6B (both manufactured by Cytiva) and SulfoLink Coupling Resin (manufactured by Thermo Fisher Scientific) can be exemplified.
- the functional group When the insoluble porous carrier has a functional group such as a hydroxyl group, an epoxy group, a carboxyl group, or an amino group on its surface, the functional group is activated by introducing a compound having an activating functional group. After preparing an insoluble porous carrier to which a functional group has been added, the activated functional group and an Fc-binding protein may be covalently bonded to prepare an antibody adsorbent.
- a functional group such as a hydroxyl group, an epoxy group, a carboxyl group, or an amino group
- epichlorohydrin forms an epoxy group as an activating group
- 1,4-butanediol diglycidyl ether forms an epoxy group as an activating group
- An activating agent such as silk chloride (forming a tresyl group as an activating group) or vinyl bromide (forming a vinyl group as an activating group) may be used to impart an activated functional group.
- N-succinimidyl 3-maleimidopropionate forming a maleimide group as an activating group
- 1,1'-carbonyldiimidazole a carbonylimidazole group as an activating group
- an activating agent such as halogenated acetic acid (forming a halogenated acetyl group as an activating group) may be used to provide an activated functional group.
- the column packed with the antibody adsorbent may be one commonly used for affinity chromatography.
- the diameter (inner diameter) of the column can be 3 mm to 100 cm, preferably 3 mm to 100 mm, more preferably 3 mm to 30 mm.
- the length of the column can be 10 to 500 mm.
- a Cytiva Tricorn column Tricorn 5/50 of ⁇ 5.0 mm ⁇ 50 mm can be used.
- an antibody means a molecule containing an immunoglobulin Fc region.
- An antibody may consist of an Fc region or may contain other regions in addition to the Fc region.
- the antibody of the present invention may have a sugar chain added (has a sugar chain).
- Antibodies may be monoclonal antibodies or polyclonal antibodies.
- the antibody may be an antibody drug.
- Antibody drugs include Herceptin (trastuzumab), Rituxan (rituximab), Avastin (bevacizumab), Erbitux (cetuximab), Actemra (tocilizumab), Remicade (infliximab) and the like.
- Antibodies may be commercially available, or may be produced using CHO cells (Chinese hamster ovary cells), Sp2/0 cells, NS0 cells, hybridoma cells, and the like.
- the antibody-containing solution may be a solution in which the antibody is dissolved in phosphate-buffered saline.
- the column may be equilibrated by adding an equilibration liquid to the column packed with the antibody adsorbent using liquid transfer means such as a pump.
- the antibody is specifically adsorbed on the antibody adsorbent by adding a solution containing the antibody by the above-mentioned liquid feeding means.
- the adsorbed antibody may be eluted by adding a buffer solution and changing the pH in a stepwise manner by the liquid feeding means.
- separation of antibodies is not limited to separation based on structure, properties, activity, etc., but also includes separation of antibodies from solutions containing contaminants (removal of contaminants).
- equilibration solutions examples include phosphate buffer, acetate buffer, MES (2-(N-morpholino)ethanesulfonic acid) buffer, and citrate buffer.
- An inorganic salt such as sodium chloride at 10 mM or more and 200 mM or less may be added to these buffer solutions.
- the pH of the equilibration solution may be appropriately determined from the pH range of 4.0 to 8.0, taking into consideration the buffer solution components, column shape, packing pressure of the adsorbent into the column, and the like.
- the antibody adsorbed on the antibody adsorbent is eluted with a pH gradient.
- the pH gradient is a step gradient in which the pH of the buffer solution is lowered stepwise, and the range of pH decrease is 0.1 or more and less than 1.
- a linear gradient is generally used as a pH gradient, but when eluting with a linear gradient, if the slope of the pH decrease is too steep, all antibodies will be eluted at once regardless of differences in structure or activity. There are risks. In order to avoid this risk, if the slope of the pH decrease is moderated, it takes a lot of time and the obtained chromatogram (separation pattern) has gentle peaks, which makes fractionation based on peaks difficult. In other words, it becomes difficult to determine when to aliquot the desired antibody. Therefore, in the present invention, the pH gradient elution of the antibody adsorbed on the antibody adsorbent is carried out with a step gradient.
- Elution by a step gradient in the present invention specifically, the pH of the buffer solution added to the column filled with the antibody adsorbent, the antibody adsorbed to the adsorbent is stepwise with a decrease range of 0.1 or more and less than 1. and let it elute.
- a pH drop within this range facilitates peak-based fractionation without eluting all of the antibody at once.
- antibodies can be sorted based on differences in structure and activity.
- the decrease in pH is 0.1 or more, and may be 0.15 or more.
- the decrease in pH is less than 1 and is 0.9 or less, 0.8 or less, 0.7 or less, 0.6 or less, 0.5 or less, 0.4 or less, 0.3 or less, or 0.25 or less.
- the range of decrease in pH may be 0.1 or more and 0.6 or less, or may be 0.1 or more and 0.3 or less.
- the pH at the start of the step gradient may be a value obtained by adding a safety factor to the pH at which the antibody adsorbed to the antibody adsorbent begins to elute.
- the safety factor may be set as appropriate as long as it satisfies the purpose of preventing the risk of elution immediately after the start of liquid flow. A value obtained by adding three times may be used.
- the buffer used for the step gradient can be added to the column after adjusting the pH by the following method.
- the above two kinds of solutions may be mixed so as to obtain a desired pH and added to the column.
- the buffer substance contained in the buffer solution may be a substance that has a buffering capacity within the pH range where the antibody elutes (e.g., pH 3.0 or more and 6.0 or less) and has multiple pKas within that range, Examples include citrate buffers, acetate buffers, phosphate buffers, succinate buffers, phthalate buffers, and glycine hydrochloride buffers.
- the flow rate of the buffer during the step gradient or the time to maintain the pH can be set as appropriate, taking into account the size of the column filled with the antibody adsorbent.
- the conditions for changing the pH before starting the step gradient may be set as appropriate.
- the pH may be decreased in one step to the pH at the start of the step gradient, may be decreased continuously (linear gradient), or may be decreased stepwise.
- the extent of the decrease is not particularly limited.
- Antibodies with the desired structure and activity can be obtained by fractionating antibody-containing fractions (peaks) eluted with each pH buffer solution by the method described above. Fractionation may be performed by a conventional method. Specifically, for example, the collection container may be replaced at the timing when the pH of the buffer solution changes.
- the amount of antibody adsorbent packed in the column can be 0.1 mL or more, 0.3 mL or more, 0.5 mL or more, 0.7 mL or more, or 0.9 mL or more.
- the amount of antibody adsorbent packed in the column can be 1.4 mL or less, 1.2 mL or less, or 1.0 mL or less.
- the method of the invention can separate 1 mg or more and 50 mg or less of antibody. That is, the antibody-containing solution of the present invention may contain 1 mg or more and 50 mg or less of the antibody. The antibody-containing solution of the present invention may contain 5 mg or more and 40 mg or less of the antibody.
- the ratio of the mass of the antibody in the solution containing the antibody to the volume of the antibody adsorbent packed in the column may be from 1 mg/1.0 mL to 50 mg/0.1 mL, and from 5 mg/1.0 mL to 40 mg/0.1 mL. It may be 9 mL.
- a column filled with 0.1 mL or more and 1.0 mL or less of antibody adsorbent may be added with a solution containing 1 mg or more and 50 mg or less of antibody, and 0.9 mL or more and 1.0 mL or less of antibody adsorbent is filled.
- a solution containing 5 mg or more and 40 mg or less of antibody may be added to the column.
- the antibody composition according to one aspect of the present invention contains antibodies detected at a retention time of 750 minutes or more when the monoclonal antibody solution is fractionated under the following measurement conditions, and 15% by mass based on the total mass of the antibody composition. Including above.
- the antibody composition when the monoclonal antibody solution is fractionated under the following measurement conditions, the antibody eluted with the following citrate buffer solution having a pH of 4.0 or less is obtained based on the total mass of the antibody composition. Contains 15% by mass or more.
- This antibody composition exhibits high activity (for example, ADCC activity or CDC activity), and is effective in treating cancer and the like.
- the retention time may be 900 minutes or less, 850 minutes or less, or 800 minutes or less.
- the holding time may be 750 to 900 minutes, 750 to 850 minutes, or 750 to 800 minutes.
- the pH of the citrate buffer may be 3.6-4.0, 3.8-4.0, and may be 3.4, 3.6, 3.8 or 4.0.
- the content of antibodies detected at a retention time of 750 minutes or longer when the monoclonal antibody solution is fractionated under the above measurement conditions is based on the total mass of the antibody composition. , 20% by mass or more, 30% by mass or more, 40% by mass or more, 50% by mass or more, 60% by mass or more, 70% by mass or more, 80% by mass or more, or 90% by mass or more.
- the activity exhibited by the antibody composition for example, ADCC activity or CDC activity
- the antibody detected with a retention time of less than 750 minutes when the monoclonal antibody solution is fractionated under the measurement conditions is 15% based on the total mass of the antibody composition. Contains more than mass %.
- the antibody eluted with the above citrate buffer having a pH of 4.2 or higher is extracted based on the total mass of the antibody composition. Contains 15% by mass or more.
- the activity (eg, ADCC activity or CDC activity) exhibited by this antibody composition is low, and it is effective, for example, in the treatment of autoimmune diseases such as rheumatoid arthritis.
- the retention time is 450 to 550 minutes, 550 to 650 minutes, 650 to 750 minutes, 300 to 400 minutes, 400 to 480 minutes. minutes or less, 480 to 580 minutes, 580 to 650 minutes, 650 to 750 minutes, 500 to 600 minutes, 600 to 650 minutes, or 650 to 750 minutes.
- the pH of the citrate buffer may be 4.2-5.0 or 4.4-4.8, 4.2, 4.4, 4.6, 4.8 or 5.0 good too. The shorter the retention time and the higher the pH of the citrate buffer, the lower the activity exhibited by the antibody composition (e.g., ADCC activity or CDC activity). It is valid.
- the content of antibodies detected at a retention time of less than 750 minutes when the monoclonal antibody solution is fractionated under the measurement conditions is the total mass of the antibody composition It may be 20% by mass or more, 30% by mass or more, 40% by mass or more, 50% by mass or more, 60% by mass or more, 70% by mass or more, 80% by mass or more, or 90% by mass or more.
- the activity eg, ADCC activity or CDC activity
- the antibody composition is further reduced, and, for example, it is more effective in treating autoimmune diseases such as rheumatoid arthritis.
- the antibody composition of the present invention may be an antibody composition in which antibodies having sugar chains containing galactose account for 80% by mass or more of the total amount of the antibody composition.
- This antibody composition exhibits high activity (for example, ADCC activity or CDC activity), and is effective in treating cancer and the like.
- the content of the antibody having sugar chains containing galactose may be 85% by mass or more, 90% by mass or more, or 95% by mass or more based on the total amount of the antibody composition. When the content is within these ranges, the activity exhibited by the antibody composition (for example, ADCC activity or CDC activity) is enhanced, making it more effective in treating cancer and the like.
- Another antibody composition of the present invention may be an antibody composition in which antibodies having sugar chains that do not contain galactose account for 60% by mass or more of the total amount of the antibody composition.
- the activity (eg, ADCC activity or CDC activity) exhibited by this antibody composition is low, and it is believed to be effective, for example, in the treatment of autoimmune diseases such as rheumatoid arthritis.
- the content of the antibody having sugar chains without galactose may be 70% by mass or more, 80% by mass or more, or 90% by mass or more based on the total amount of the antibody composition. When the content is within these ranges, the activity (eg, ADCC activity or CDC activity) exhibited by the antibody composition is further reduced, and, for example, it is more effective in treating autoimmune diseases such as rheumatoid arthritis.
- the concentrate according to one aspect of the present invention is an antibody solution concentrate, and the antibody solution and the concentrate are detected at a retention time of 750 minutes or more when the monoclonal antibody solution is fractionated under the measurement conditions.
- the content of said antibody relative to the total volume of said concentrate is at least twice the content of said antibody relative to the total volume of said antibody solution.
- this concentrate contains an antibody that is eluted with the citrate buffer solution having a pH of 4.0 or less when the monoclonal antibody solution is fractionated under the measurement conditions, and the amount of the antibody with respect to the total amount of the concentrate is The content is at least twice the content of the antibody with respect to the total amount of the antibody solution.
- the activity for example, ADCC activity or CDC activity
- exhibited by this concentrate is high and effective for treatment of cancer and the like.
- the retention time may be 900 minutes or less, 850 minutes or less, or 800 minutes or less.
- the holding time may be 750 to 900 minutes, 750 to 850 minutes, or 750 to 800 minutes.
- the pH of the citrate buffer may be 3.6-4.0, 3.8-4.0, and may be 3.4, 3.6, 3.8 or 4.0.
- the content of the antibody with respect to the total amount of the concentrate is 2.5 times or more, 3 times or more, 3.5 times the content of the antibody with respect to the total amount of the antibody solution. or more.
- the activity for example, ADCC activity or CDC activity
- the concentrate is enhanced, making it more effective in treating cancer and the like.
- a concentrate according to another aspect of the present invention is an antibody solution concentrate, wherein the antibody solution and the concentrate have a retention time of less than 750 minutes when the monoclonal antibody solution is fractionated under the measurement conditions. wherein the content of said antibody relative to the total volume of said concentrate is at least twice the content of said antibody relative to the total volume of said antibody solution.
- this concentrate contains an antibody that is eluted with the above citrate buffer solution having a pH of 4.2 or higher when the monoclonal antibody solution is fractionated under the above measurement conditions, and the amount of the antibody relative to the total amount of the concentrate is The content is at least twice the content of the antibody with respect to the total amount of the antibody solution.
- the activity eg, ADCC activity or CDC activity
- exhibited by this concentrate is low, and it is effective, for example, in the treatment of autoimmune diseases such as rheumatoid arthritis.
- the retention time is 450 to 550 minutes, 550 to 650 minutes, 650 to 750 minutes, 300 to 400 minutes, 400 to 480 minutes. 480 minutes to 580 minutes, 580 minutes to 650 minutes, 650 minutes to less than 750 minutes, 500 minutes to 600 minutes, 600 minutes to 650 minutes, or 650 minutes to less than 750 minutes.
- the pH of the citrate buffer may be 4.2-5.0 or 4.4-4.8, 4.2, 4.4, 4.6, 4.8 or 5.0 good too. The shorter the retention time and the higher the pH of the citrate buffer, the lower the activity (e.g. ADCC activity or CDC activity) exhibited by the concentrate, making it more effective in treating autoimmune diseases such as rheumatoid arthritis. is.
- the content of the antibody with respect to the total amount of the concentrate is 2.5 times or more, 3 times or more, the content of the antibody with respect to the total amount of the antibody solution. It may be 5 times or more.
- the concentrate exerts less activity (eg, ADCC activity or CDC activity) and is more effective in treating, for example, autoimmune diseases such as rheumatoid arthritis.
- FcR36i_Cys SEQ ID NO: 2
- the first methionine (Met) to the 22nd alanine (Ala) is the PelB signal peptide
- the 24th glycine (Gly) to the 199th glutamine (Gln) is Fc
- the amino acid sequence of the binding protein FcR36i, from 200th glycine (Gly) to 207th glycine (Gly) is the cysteine tag sequence.
- FcR36i is the extracellular region of native human Fc ⁇ RIIIa (amino acid sequence from 17th glycine (Gly) to 192nd glutamine (Gln) in the amino acid sequence set forth in SEQ ID NO: 1), provided that In amino acid residues, Glu21Gly (this notation indicates that glutamic acid at position 21 in SEQ ID NO: 1 (corresponding to position 28 in SEQ ID NO: 2) is substituted with glycine, the same shall apply hereinafter), Leu23Met, Val27Glu, Phe29Ile, Gln33Pro, Tyr35Asn, Lys40Gln, Gln48Arg, Tyr51His, Glu54Asp, Asn56Asp, Ser65Arg, Ser68Pro, Tyr74Phe, Phe75Ile, Ala78Ser, Thr80Ser, Asn92Ser, Val117 Glu, Lys119Val, Glu121Gly, Asp122Glu, Lys132Arg, Thr140Met, Tyr141P
- the antibody adsorbent obtained in Reference Example 1 had good alkali resistance. More specifically, even after 200 washings in place (CIP) of the antibody adsorbent with a 0.1 M NaOH solution, 90% of the antibody adsorption amount was maintained compared to before washing. Moreover, the antibody adsorbent obtained in Reference Example 1 had a dynamic adsorption capacity (DBC) of 40 g/L or more.
- DBC dynamic adsorption capacity
- 1 is the ratio of 50 mM trisodium citrate (Citrate-3Na) aqueous solution based on the total mass of 50 mM citric acid aqueous solution and 50 mM trisodium citrate aqueous solution, and the vertical axis. indicates pH.
- Table 1 shows the relationship between the mixing ratio of 50 mM citric acid aqueous solution (50 mM citric acid) and 50 mM trisodium citrate aqueous solution (50 mM Citrate-3Na) and pH obtained from the approximate curve (Fig. 1). show.
- Example 1 Separation of antibodies using an antibody adsorbent packed column
- the antibody adsorbent (FcR36i_Cys immobilized gel) prepared in Reference Example 1 was applied to a Cytiva Tricorn column (Tricorn 5 /50) to prepare an FcR36i_Cys column with a gel volume of 0.373 mL.
- phosphate buffered saline (pH 7.4) (hereinafter also referred to as PBS) was added to the column at a flow rate of 0.07 mL.
- a step gradient in which the pH is gradually decreased by 0.5 from 5.0 is indicated by a broken line in FIG. (7)
- the fractions collected in (5) and (6) were dialyzed against PBS for 16 hours to replace the solvent.
- a TSKgel FcR-IIIA-NPR column manufactured by Tosoh Corporation; hereinafter simply referred to as FcRIIIA column
- FcRIIIA column was connected to a high-performance liquid chromatography device (manufactured by Shimadzu Corporation).
- the separation pattern of the FcR36i_Cys column is shown in FIG. 3, and the separation pattern of the FcRIIIA column is shown in FIG.
- the vertical axis (left) indicates absorbance at 280 nm
- the vertical axis (right) indicates the set pH (pH of citrate buffer)
- the horizontal axis indicates time (minutes).
- the vertical axis in FIG. 4 indicates absorbance at 280 nm
- the horizontal axis indicates time (minutes).
- the antibody adsorbed on the antibody adsorbent was eluted with a step gradient in which the pH was decreased stepwise by a decrease width of 0.5, thereby separating into two peaks (F1 and F2) (Fig. 3).
- the F1 and F2 fractions in FIG. 3 were fractionated and analyzed with an FcRIIIA column.
- the F1 fraction was mainly eluted at the first peak (1st), and the ADCC (antibody It was found that many antibodies with sugar chain structures with low activity (dependent cytotoxicity) were contained (Fig. 4). From this, it was found that according to the method of the present invention, 5 mg of antibody can be fractionated based on the difference in ADCC activity.
- the first peak (1st) in FIG. 4 shows an antibody having a sugar chain structure with low ADCC (antibody-dependent cellular cytotoxicity) activity.
- the third peak (3rd) separates an antibody having a sugar chain structure with high ADCC activity
- the second peak (2nd) separates an antibody having a sugar chain structure exhibiting intermediate ADCC activity.
- Example 2 Separation of antibodies using an antibody-adsorbent-filled column 6
- 50 mM citrate buffer (pH 4.4) 50 mM citrate buffer (pH 4.2), 50 mM citrate buffer (pH 4.0), 50 mM citrate buffer (pH 3.8) , 50 mM citrate buffer (pH 3.6) and 50 mM citrate buffer (pH 3.4) are added in 10 CV steps in this order to create a step gradient that decreases the pH stepwise with a decrease width of 0.2.
- Separation patterns of the FcR36i_Cys column and the FcRIIIA column were obtained in the same manner as in Example 1 except for the implementation.
- the step gradient performed in this example is indicated by a dotted line in FIG.
- the separation pattern of the FcR36i_Cys column is shown in FIG. 5, and the separation pattern of the FcRIIIA column is shown in FIG.
- the vertical axis (left) indicates absorbance at 280 nm
- the vertical axis (right) indicates the set pH (pH of citrate buffer)
- the horizontal axis indicates time (minutes).
- the vertical axis in FIG. 6 indicates absorbance at 280 nm
- the horizontal axis indicates time (minutes).
- the F1 fraction mainly had the first peak (1st), that is, an antibody having a sugar chain structure with low ADCC activity.
- the F3 fraction mainly contained the second peak (2nd), ie, an antibody having a sugar chain structure exhibiting intermediate ADCC activity
- the F4 fraction mainly contained the third peak (3rd), ie, an ADCC activity. It was found that antibodies with high sugar chain structures were contained in each (Fig. 6). From the above results, it was found that 5 mg of antibody can be more easily fractionated based on the difference in sugar chain structure (here, the difference in ADCC activity) by reducing the range of pH decrease from 0.5 to 0.2. have understood.
- the separation pattern of the FcR36i_Cys column is shown in FIG. 7, and the separation pattern of the FcRIIIA column is shown in FIG.
- the vertical axis (left) in FIG. 7 indicates the absorbance at 280 nm
- the vertical axis (right) indicates the set pH (pH of citrate buffer)
- the horizontal axis indicates time (minutes).
- the vertical axis in FIG. 8 indicates absorbance at 280 nm
- the horizontal axis indicates time (minutes).
- Example 1 decrease width 0.5
- Example 2 decrease width 0.2
- the desired sugar chain structure was obtained using an antibody adsorbent (FcR36i_Cys column) containing a porous carrier and an Fc-binding protein immobilized on the carrier.
- an antibody having here, desired ADCC activity
- the antibody adsorbed on the antibody adsorbent is eluted with a step gradient that decreases the pH stepwise in a range of decrease of 0.1 or more and less than 1. I found it necessary.
- an antibody having a desired sugar chain structure here, a desired ADCC activity
- Example 3 Separation of antibodies using an antibody adsorbent packed column
- the monoclonal antibody solution to be added to the FcR36i_Cys column was Actemra (manufactured by Roche; anti-interleukin 6 monoclonal antibody; addition amount 5 mg) solution
- the separation patterns of the FcR36i_Cys column and the FcRIIIA column were obtained in the same manner as in Example 1.
- the step gradient performed in this example is indicated by a dashed line in FIG.
- Example 4 Separation of antibodies using an antibody adsorbent packed column
- the monoclonal antibody solution to be added to the FcR36i_Cys column was Actemra (manufactured by Roche; anti-interleukin 6 monoclonal antibody; addition amount 5 mg) solution, and the separation pattern of the FcR36i_Cys column and the FcRIIIA column was obtained in the same manner as in Example 1 except that the step gradient performed in (6) of Example 1 was performed by the method described in Example 2. rice field. The step gradient performed in this example is indicated by a dotted line in FIG.
- FIGS. 11 and 12 The separation patterns of the FcR36i_Cys column and the FcRIIIA column in Example 3 (decrease in pH: 0.5) are shown in Figures 9 and 10, respectively.
- the vertical axis (left) in FIG. 9 indicates the absorbance at 280 nm
- the vertical axis (right) indicates the set pH (pH of citrate buffer)
- the horizontal axis indicates time (minutes).
- the vertical axis in FIG. 10 indicates absorbance at 280 nm
- the horizontal axis indicates time (minutes).
- FIGS. 11 and 12 are shown in FIGS. 11 and 12, respectively. In FIG.
- the vertical axis (left) indicates absorbance at 280 nm
- the vertical axis (right) indicates the set pH (pH of citrate buffer)
- the horizontal axis indicates time (minutes).
- the vertical axis in FIG. 12 indicates absorbance at 280 nm
- the horizontal axis indicates time (minutes).
- Fractions F1 to F6 in FIG. 11 were fractionated and analyzed with an FcRIIIA column.
- Fractions F1 to F4 mainly had the first peak (1st), that is, a sugar chain structure with low ADCC activity.
- Antibodies mainly show the second peak (2nd) in the F5 fraction, that is, antibodies having a sugar chain structure exhibiting intermediate ADCC activity, and mainly the third peak (3rd), that is, the ADCC activity in the F6 fraction. (Fig. 12).
- the antibody adsorbed to the antibody adsorbent is eluted with a step gradient in which the pH is lowered in steps of 0.1 or more and less than 1.
- a large amount of antibody can be fractionated based on the difference in sugar chain structure (here, the difference in ADCC activity), and fractionation can be more easily achieved with a reduction range of 0.1 or more and 0.3 or less.
- Example 5 Separation of antibodies using an antibody adsorbent packed column
- the monoclonal antibody solution to be added to the FcR36i_Cys column was Erbitux (Merck Serono; A separation pattern of the FcR36i_Cys column and the FcRIIIA column was obtained in the same manner as in Example 1, except that the amount of the solution was 5 mg).
- the step gradient performed in this example is indicated by a dashed line in FIG.
- Example 6 Separation of antibodies using an antibody adsorbent packed column
- the monoclonal antibody solution to be added to the FcR36i_Cys column was Erbitux (manufactured by Merck Serono;
- a separation pattern of the FcR36i_Cys column and the FcRIIIA column was obtained in the same manner as in Example 1 except that the step gradient performed in Example 1 (6) was performed by the method described in Example 2. rice field.
- the step gradient performed in this example is indicated by a dotted line in FIG.
- FIGS. 13 and 14 The separation patterns of the FcR36i_Cys column and the FcRIIIA column in Example 5 (pH reduction width of 0.5) are shown in FIGS. 13 and 14, respectively.
- the vertical axis (left) indicates absorbance at 280 nm
- the vertical axis (right) indicates the set pH (pH of citrate buffer)
- the horizontal axis indicates time (minutes).
- the vertical axis in FIG. 14 indicates absorbance at 280 nm
- the horizontal axis indicates time (minutes).
- FIGS. 15 and 16 The separation patterns of the FcR36i_Cys column and the FcRIIIA column in Example 6 (pH reduction width of 0.2) are shown in FIGS. 15 and 16, respectively.
- the antibody adsorbed to the antibody adsorbent is eluted with a step gradient in which the pH is lowered stepwise in a range of decrease of 0.1 or more and less than 1.
- a large amount of antibody can be fractionated based on the difference in sugar chain structure (here, the difference in ADCC activity), and fractionation can be more easily achieved with a reduction range of 0.1 or more and 0.3 or less.
- Example 7 Separation of antibodies using an antibody adsorbent packed column ⁇ 1>
- the antibody adsorbent (FcR36i_Cys immobilized gel) prepared in Reference Example 1 was applied to a Cytiva Tricorn column (Tricorn 5 /50) to prepare an FcR36i_Cys column with a gel volume of 0.982 mL.
- ⁇ 2> After connecting the FcR36i_Cys column prepared in ⁇ 1> to AKTA york 150 manufactured by Cytiva, PBS (pH 7.4) was added to the column at a flow rate of 0.20 mL/min for 5 CV to equilibrate the column.
- a monoclonal antibody (Rituxan, human/mouse chimeric monoclonal antibody manufactured by Zenyaku Kogyo Co., Ltd.) diluted with PBS to 5.0 mg/mL was added to the FcR36i_Cys column at a flow rate of 0.20 mL/min as an antibody at a flow rate of 0.20 mL/min.
- the column was washed by adding 20 CV of PBS to the FcR36i_Cys column at a flow rate of 0.20 mL/min.
- fractions containing the monoclonal antibody eluted from the antibody adsorbent were collected for each pH buffer added.
- the step gradient performed in this example is indicated by a solid line in FIG. ⁇ 7>
- the fractions collected in ⁇ 5> and ⁇ 6> were dialyzed against PBS for 16 hours to replace the solvent.
- the FcRIIIA column was connected to a high performance liquid chromatography device (manufactured by Shimadzu Corporation).
- the FcRIIIA column was equilibrated by adding 30 CV of 20 mM acetic acid-sodium acetate buffer (pH 5.0) containing 50 mM sodium chloride to the FcRIIIA column at a flow rate of 0.6 mL/min. 5 ⁇ g of the monoclonal antibody solution (fractions collected in ⁇ 5> and ⁇ 6>) after solvent replacement in ⁇ 9> ⁇ 7> was added to the FcRIIIA column at a flow rate of 0.6 mL/min.
- the separation pattern of the FcR36i_Cys column is shown in FIG. 18, and the separation pattern of the FcRIIIA column is shown in FIG. 19, respectively.
- the vertical axis (left) in FIG. 18 indicates the absorbance at 280 nm
- the vertical axis (right) indicates the set pH (pH of citrate buffer)
- the horizontal axis indicates time (minutes).
- the antibody adsorbed on the antibody adsorbent was eluted with a step gradient in which the pH was decreased stepwise by a decrease width of 0.2, thereby separating into three peaks (F1, F2 and F3) (Fig. 18).
- F1 fraction, F2 fraction and F3 fraction in FIG. 18 were fractionated and analyzed with an FcRIIIA column.
- the F1 fraction mainly contained the first peak (1st), that is, a sugar chain structure with low ADCC activity.
- Example 8 Separation of antibodies using an antibody adsorbent packed column
- the amount of monoclonal antibody (Rituxan manufactured by Zenyaku Kogyo Co., Ltd., human-mouse chimeric monoclonal antibody) added to the FcR36i_Cys column was Separation patterns of the FcR36i_Cys column and the FcRIIIA column were obtained in the same manner as in Example 7, except that the amount was 10 mg.
- FIG. 17 shows the step gradient performed in this example.
- the separation pattern of the FcR36i_Cys column is shown in FIG. 20, and the separation pattern of the FcRIIIA column is shown in FIG.
- the vertical axis (left) in FIG. 20 indicates the absorbance at 280 nm
- the vertical axis (right) indicates the set pH (pH of citrate buffer)
- the horizontal axis indicates time (minutes).
- the antibody adsorbed on the antibody adsorbent was eluted with a step gradient in which the pH was decreased stepwise by a decrease width of 0.2, thereby separating into four peaks (F1 to F4) (Fig. 20). Fractions F1 to F4 in FIG.
- the F1 and F2 fractions mainly had the first peak (1st), that is, sugar chain structures with low ADCC activity.
- Antibodies have mainly the second peak (2nd) and the third peak (3rd) in the F3 fraction, that is, antibodies having a sugar chain structure exhibiting an intermediate or higher ADCC activity, It was found that the peak (3rd), that is, antibodies having a sugar chain structure with high ADCC activity were included (Fig. 21).
- Example 9 Antibody separation using an antibody adsorbent packed column
- the amount of monoclonal antibody (Rituxan manufactured by Zenyaku Kogyo Co., Ltd., human-mouse chimeric monoclonal antibody) added to the FcR36i_Cys column was Separation patterns of the FcR36i_Cys column and the FcRIIIA column were obtained in the same manner as in Example 7, except that the amount was 20 mg.
- FIG. 17 shows the step gradient performed in this example.
- the separation pattern of the FcR36i_Cys column is shown in FIG. 22, and the separation pattern of the FcRIIIA column is shown in FIG.
- the vertical axis (left) in FIG. 22 indicates the absorbance at 280 nm
- the vertical axis (right) indicates the set pH (pH of citrate buffer)
- the horizontal axis indicates time (minutes).
- the antibody adsorbed on the antibody adsorbent was eluted with a step gradient in which the pH was decreased stepwise by a decrease width of 0.2, thereby separating into four peaks (F1 to F4) (Fig. 22). Fractions F1 to F4 in FIG.
- the F1 and F2 fractions mainly had the first peak (1st), that is, a sugar chain structure with low ADCC activity.
- Antibodies have mainly the second peak (2nd) and the third peak (3rd) in the F3 fraction, that is, antibodies having a sugar chain structure exhibiting an intermediate or higher ADCC activity, It was found that the peak (3rd), that is, antibodies having a sugar chain structure with high ADCC activity were included (Fig. 23).
- Example 10 Antibody separation using an antibody adsorbent packed column
- the amount of monoclonal antibody (Rituxan manufactured by Zenyaku Kogyo Co., Ltd., human-mouse chimeric monoclonal antibody) added to the FcR36i_Cys column was Separation patterns of the FcR36i_Cys column and the FcRIIIA column were obtained in the same manner as in Example 7, except that the amount was 30 mg.
- FIG. 17 shows the step gradient performed in this example.
- the separation pattern of the FcR36i_Cys column is shown in FIG. 24, and the separation pattern of the FcRIIIA column is shown in FIG.
- the vertical axis (left) in FIG. 24 indicates the absorbance at 280 nm
- the vertical axis (right) indicates the set pH (pH of citrate buffer)
- the horizontal axis indicates time (minutes).
- the antibody adsorbed on the antibody adsorbent was eluted with a step gradient in which the pH was decreased stepwise by a decrease width of 0.2, thereby separating into 6 peaks (F1 to F6) (Fig. 24). Fractions F1 to F6 in FIG.
- the F1 to F3 fractions mainly had the first peak (1st), that is, sugar chain structures with low ADCC activity.
- Antibodies mainly show the first peak (1st) and the second peak (2nd) in the F4 fraction, that is, antibodies with sugar chain structures exhibiting intermediate or lower ADCC activity, and antibodies with sugar chain structures showing intermediate or lower ADCC activity mainly in the second peak in the F5 fraction.
- the peak (2nd), that is, an antibody having a sugar chain structure exhibiting intermediate ADCC activity, and the third peak (3rd), that is, an antibody having a sugar chain structure exhibiting high ADCC activity, were mainly present in the F6 fraction. It was found to contain (Fig. 25).
- Example 11 Antibody separation using an antibody adsorbent-filled column
- the amount of monoclonal antibody (Rituxan manufactured by Zenyaku Kogyo Co., Ltd., human-mouse chimeric monoclonal antibody) added to the FcR36i_Cys column was Separation patterns of the FcR36i_Cys column and the FcRIIIA column were obtained in the same manner as in Example 7, except that the amount was 40 mg.
- FIG. 17 shows the step gradient performed in this example.
- the separation pattern of the FcR36i_Cys column is shown in FIG. 26, and the separation pattern of the FcRIIIA column is shown in FIG.
- the vertical axis (left) in FIG. 26 indicates the absorbance at 280 nm
- the vertical axis (right) indicates the set pH (pH of citrate buffer)
- the horizontal axis indicates time (minutes).
- the antibody adsorbed on the antibody adsorbent was eluted with a step gradient in which the pH was decreased stepwise by a decrease width of 0.2, whereby it was separated into a plurality of peaks (Fig. 26).
- the F1 and F2 fractions mainly had the first peak (1st), that is, sugar chain structures with low ADCC activity.
- Antibodies mainly show the second peak (2nd) in the F3 and F4 fractions, that is, antibodies with sugar chain structures exhibiting intermediate ADCC activity, and the F5 fractions mainly show the second peak (2nd) and the second peak (2nd).
- the antibody adsorbed to the antibody adsorbent can be eluted with a step gradient in which the pH is decreased stepwise by a decrease of 0.2.
- antibodies can be sorted based on differences in sugar chain structure (eg, ADCC activity).
- Labeled sugar chains were purified on a hydrophilic interaction liquid chromatography (HILIC) column.
- HILIC hydrophilic interaction liquid chromatography
- the analysis results of the obtained sugar chain structure are shown in FIG. 28 and Table 2, and the schematic diagram of the sugar chain structure is shown in Table 3, respectively.
- the vertical axis of the graph shown in FIG. 28 is the ratio of sugar chain structures (peak area ratio of each sugar chain structure).
- the sugar names (abbreviations) listed along the horizontal axis are the same as the abbreviations used in Table 3.
- the antibodies contained in the F4 fraction (eluted with pH 4.0 citrate buffer) in FIG. The content ratio of antibodies having a non-reducing end was high, and the content ratio of antibodies having a sugar chain structure (eg, G0F) not containing galactose at the non-reducing end was low.
- the antibody contained in the F1 fraction of FIG. 20 eluted with a citrate buffer of pH 4.6
- the antibody contained in the F2 fraction of FIG. 20 eluted with a citrate buffer of pH 4.4
- the antibody contained in the F2 fraction is the content ratio of antibodies having a sugar chain structure containing galactose at the non-reducing end, and the sugar chain containing no galactose at the non-reducing end.
- the content ratio of antibodies with structures did not differ greatly. From this, it is possible to obtain an antibody containing many antibodies having a sugar chain structure containing galactose at the non-reducing end by recovering the antibody eluted with a citrate buffer solution having a pH of 4.0 or less. shown. That is, it was found that the separation method of the present invention can separate antibodies contained in a solution based on differences in sugar chain structures, specifically based on the presence or absence of non-reducing terminal galactose residues.
- the antibody contained in the F2 fraction of FIG. 18 has a higher content of G2F containing two galactoses at the non-reducing end than the antibodies contained in the F1 and F2 fractions of FIG. shown. That is, it was found that the separation method of the present invention can separate antibodies contained in a solution based on differences in sugar chain structures, specifically, differences in the number of non-reducing terminal galactose residues.
- the separation method of the present invention can separate antibodies contained in a solution based on the content ratio of antibodies having a sugar chain structure that does not contain galactose at the non-reducing end.
- the F1 and F2 fractions in FIG. 20 and the F2 fraction in FIG. considered suitable for treatment.
- Antibodies having a sugar chain structure containing galactose at the non-reducing end have high ADCC activity and CDC activity, so the F4 fraction in FIG. 20 is considered suitable for treatment of cancer and the like.
- the present invention facilitates large-scale fractionation of antibodies based on differences in structure and activity of antibody drugs or antibody-related drugs, which has been difficult in the past.
- the present invention can improve quality, which has been a problem in the production of antibody drugs, that is, reduce variation in activity between lots due to differences in structure.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- Immunology (AREA)
- Genetics & Genomics (AREA)
- Medicinal Chemistry (AREA)
- Molecular Biology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Toxicology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Gastroenterology & Hepatology (AREA)
- Zoology (AREA)
- Cell Biology (AREA)
- Peptides Or Proteins (AREA)
Abstract
Description
[1]不溶性多孔質担体と上記担体に固定化されたFc結合性タンパク質とを含む抗体吸着材を充填したカラムに、抗体を含む溶液を添加し、上記抗体を上記抗体吸着材に吸着させる工程と、上記カラムに緩衝液を添加し、上記抗体吸着材に吸着した上記抗体をpHグラジエントで溶出させる工程と、を備える抗体の分離方法であって、上記pHグラジエントが、上記緩衝液のpHを段階的に低下させるステップグラジエントであり、上記pHの低下幅が0.1以上1未満である、方法。
[2]上記不溶性多孔質担体の体積平均粒子径が30~150μmである、[1]に記載の方法。
[3]上記緩衝液が、pH3.0以上6.0以下の範囲で緩衝能を有し、かつ上記範囲内にpKaを複数有する緩衝物質を含む溶液である、[1]または[2]に記載の方法。
[4]上記抗体吸着材の体積に対する上記抗体の質量の比が、1mg/1.0mL~50mg/0.1mLである、[1]~[3]のいずれかに記載の方法。
[5]上記Fc結合性タンパク質がヒトFcγRIIIaである、[1]~[4]のいずれかに記載の方法。
[6]上記ヒトFcγRIIIaが、下記(1)、下記(2)または下記(3)に記載のポリペプチドである、[5]に記載の方法。
(1)配列番号1に記載のアミノ酸配列のうち17番目のグリシン残基(Gly)から192番目のグルタミン残基(Gln)までのアミノ酸配列を含むポリペプチド
(2)配列番号1に記載のアミノ酸配列のうち17番目のグリシン残基(Gly)から192番目のグルタミン残基(Gln)までのアミノ酸配列において、1以上のアミノ酸残基の置換、欠失、挿入または付加を有し、かつ上記抗体への結合活性を有するポリペプチド
(3)配列番号1に記載のアミノ酸配列のうち17番目のグリシン残基(Gly)から192番目のグルタミン残基(Gln)までのアミノ酸配列と70%以上の相同性を有し、かつ上記抗体への結合活性を有するポリペプチド
[7]抗体組成物であって、モノクローナル抗体溶液を下記測定条件で分画した場合にpHが4.0以下の下記クエン酸緩衝液で溶出される抗体を、上記抗体組成物の全質量基準で15質量%以上含む、抗体組成物。
[8]抗体組成物であって、モノクローナル抗体溶液を下記測定条件で分画した場合に750分以上の保持時間で検出される抗体を、上記抗体組成物の全質量基準で15質量%以上含む、抗体組成物。
[9]抗体組成物であって、モノクローナル抗体溶液を下記測定条件で分画した場合にpHが4.2以上の下記クエン酸緩衝液で溶出される抗体を、上記抗体組成物の全質量基準で15質量%以上含む、抗体組成物。
[10]抗体組成物であって、モノクローナル抗体溶液を下記測定条件で分画した場合に750分未満の保持時間で検出される抗体を、上記抗体組成物の全質量基準で15質量%以上含む、抗体組成物。
[11]抗体溶液の濃縮物であって、上記抗体溶液および上記濃縮物は、モノクローナル抗体溶液を下記測定条件で分画した場合にpHが4.0以下の下記クエン酸緩衝液で溶出される抗体を含み、上記濃縮物の全量に対する上記抗体の含有量が、上記抗体溶液の全量に対する上記抗体の含有量の2倍以上である、濃縮物。
[12]抗体溶液の濃縮物であって、上記抗体溶液および上記濃縮物は、モノクローナル抗体溶液を下記測定条件で分画した場合に750分以上の保持時間で検出される抗体を含み、上記濃縮物の全量に対する上記抗体の含有量が、上記抗体溶液の全量に対する上記抗体の含有量の2倍以上である、濃縮物。
[13]抗体溶液の濃縮物であって、上記抗体溶液および上記濃縮物は、モノクローナル抗体溶液を下記測定条件で分画した場合にpHが4.2以上の下記クエン酸緩衝液で溶出される抗体を含み、上記濃縮物の全量に対する上記抗体の含有量が、上記抗体溶液の全量に対する上記抗体の含有量の2倍以上である、濃縮物。
[14]抗体溶液の濃縮物であって、上記抗体溶液および上記濃縮物は、モノクローナル抗体溶液を下記測定条件で分画した場合に750分未満の保持時間で検出される抗体を含み、上記濃縮物の全量に対する上記抗体の含有量が、上記抗体溶液の全量に対する上記抗体の含有量の2倍以上である、濃縮物。
[7]~[14]における(測定条件):
カラム:Tricorn 5/50(φ5.0mm×50mm、Cytiva社製)
吸着材:吸着材用多孔質親水性ビニルポリマー(東ソー社製、TOYOPEARL(液体クロマトグラフィー用充填剤)、体積平均粒子径:45μm)1gに対し、Fc結合性タンパク質であるFcR36i_Cys(配列番号2)を30mg反応させて得たFcR36i_Cys固定化ゲル
流速:0.07mL/分
溶媒:リン酸緩衝生理食塩水(pH7.4)
ステップグラジエント:50mMのクエン酸緩衝液(pH6.0)、50mMのクエン酸緩衝液(pH5.5)、50mMのクエン酸緩衝液(pH5.0)、50mMのクエン酸緩衝液(pH4.8)、50mMのクエン酸緩衝液(pH4.6)、50mMのクエン酸緩衝液(pH4.4)、50mMのクエン酸緩衝液(pH4.2)、50mMのクエン酸緩衝液(pH4.0)、50mMのクエン酸緩衝液(pH3.8)、50mMのクエン酸緩衝液(pH3.6)および50mMのクエン酸緩衝液(pH3.4)をこの順に3.73mLずつ添加
50mMのクエン酸緩衝液:50mMのクエン酸水溶液および50mMのクエン酸三ナトリウム水溶液の混合液
カラム温度:25℃
検出:UV(280nm)
注入量:2000μL(抗体量:5mg)
[15]抗体組成物であって、モノクローナル抗体溶液を下記測定条件で分画した場合にpHが4.0以下の下記クエン酸緩衝液で溶出される抗体を、上記抗体組成物の全質量基準で15質量%以上含む、抗体組成物。
[16]抗体組成物であって、モノクローナル抗体溶液を下記測定条件で分画した場合に800分以上の保持時間で検出される抗体を、上記抗体組成物の全質量基準で15質量%以上含む、抗体組成物。
[17]抗体組成物であって、モノクローナル抗体溶液を下記測定条件で分画した場合にpHが4.2以上の下記クエン酸緩衝液で溶出される抗体を、上記抗体組成物の全質量基準で15質量%以上含む、抗体組成物。
[18]抗体組成物であって、モノクローナル抗体溶液を下記測定条件で分画した場合に800分未満の保持時間で検出される抗体を、上記抗体組成物の全質量基準で15質量%以上含む、抗体組成物。
[19]抗体溶液の濃縮物であって、上記抗体溶液および上記濃縮物は、モノクローナル抗体溶液を下記測定条件で分画した場合にpHが4.0以下の下記クエン酸緩衝液で溶出される抗体を含み、上記濃縮物の全量に対する上記抗体の含有量が、上記抗体溶液の全量に対する上記抗体の含有量の2倍以上である、濃縮物。
[20]抗体溶液の濃縮物であって、上記抗体溶液および上記濃縮物は、モノクローナル抗体溶液を下記測定条件で分画した場合に800分以上の保持時間で検出される抗体を含み、上記濃縮物の全量に対する上記抗体の含有量が、上記抗体溶液の全量に対する上記抗体の含有量の2倍以上である、濃縮物。
[21]抗体溶液の濃縮物であって、上記抗体溶液および上記濃縮物は、モノクローナル抗体溶液を下記測定条件で分画した場合にpHが4.2以上の下記クエン酸緩衝液で溶出される抗体を含み、上記濃縮物の全量に対する上記抗体の含有量が、上記抗体溶液の全量に対する上記抗体の含有量の2倍以上である、濃縮物。
[22]抗体溶液の濃縮物であって、上記抗体溶液および上記濃縮物は、モノクローナル抗体溶液を下記測定条件で分画した場合に800分未満の保持時間で検出される抗体を含み、上記濃縮物の全量に対する上記抗体の含有量が、上記抗体溶液の全量に対する上記抗体の含有量の2倍以上である、濃縮物。
[15]~[22]における(測定条件):
カラム:Tricorn 5/50(φ5.0mm×50mm、Cytiva社製)
吸着材:吸着材用多孔質親水性ビニルポリマー(東ソー社製、TOYOPEARL(液体クロマトグラフィー用充填剤)、体積平均粒子径:45μm)1gに対し、Fc結合性タンパク質であるFcR36i_Cys(配列番号2)を30mg反応させて得たFcR36i_Cys固定化ゲル
流速:0.20mL/分
溶媒:リン酸緩衝生理食塩水(pH7.4)
ステップグラジエント:50mMのクエン酸緩衝液(pH6.0)、50mMのクエン酸緩衝液(pH5.5)、50mMのクエン酸緩衝液(pH5.0)、50mMのクエン酸緩衝液(pH4.8)をこの順に9.82mLずつ添加、50mMのクエン酸緩衝液(pH4.6)、50mMのクエン酸緩衝液(pH4.4)、50mMのクエン酸緩衝液(pH4.2)、50mMのクエン酸緩衝液(pH4.0)、50mMのクエン酸緩衝液(pH3.8)をこの順に29.46mLずつ添加、50mMのクエン酸緩衝液(pH3.6)および50mMのクエン酸緩衝液(pH3.4)をこの順に9.82mLずつ添加
50mMのクエン酸緩衝液:50mMのクエン酸水溶液および50mMのクエン酸三ナトリウム水溶液の混合液
カラム温度:25℃
検出:UV(280nm)
注入量:1000-8000μL(抗体量:5-40mg)
[23]抗体の分離方法が、当該抗体が有する糖鎖構造の違いに基づく抗体の分離方法である、[1]~[6]のいずれかに記載の方法。
[24]上記糖鎖構造の違いが、当該糖鎖構造中の非還元末端のガラクトース残基数の違いである、[23]に記載の方法。
(a)測定対象の不溶性多孔質担体をクロマトグラフィー用カラムに充填する工程。
(b)上記カラムに水を添加し、水を溶出液として、上記カラムからのブルーデキストラン(分子量200万)および塩化ナトリウムの溶出容積を測定する工程。
(c)上記カラムのカラム容積と、上記(b)で測定したブルーデキストランの溶出容積との差から、ゲル容積を算出する工程。
(d)操作(b)で測定した塩化ナトリウムの溶出容積と、操作(b)で測定した分子ブルーデキストランの溶出容積との差から、細孔容積を算出する工程。
(e)操作(d)で算出した細孔容積を、操作(c)で算出したゲル容積で除することで、空孔率を算出する工程。
以上をまとめると、塩化ナトリウムの溶出容積(Vn)、ブルーデキストラン(分子量200万)の溶出容積(Vo)およびカラム容積(Vc)から、以下に示した計算式により空孔率を算出できる。
空孔率[%]=((Vn-Vo)/(Vc-Vo))×100
(1)天然型ヒトFcγRIIIaの細胞外領域(配列番号1に記載のアミノ酸配列のうち17番目のグリシン残基(Gly)から192番目のグルタミン残基(Gln)までのアミノ酸残基)を少なくとも含むポリペプチド、
(2)天然型ヒトFcγRIIIaの細胞外領域を少なくとも含み、ただし当該細胞外領域を構成するアミノ酸残基において、1以上のアミノ酸残基の置換、欠失、挿入または付加を有し、かつ抗体結合活性を有するポリペプチド、および
(3)天然型ヒトFcγRIIIaの細胞外領域を少なくとも含み、ただし当該17番目から192番目までのアミノ酸配列と70%以上の相同性を有し、かつ抗体への結合活性を有するポリペプチド、があげられる。
(測定条件)
カラム:Tricorn 5/50(φ5.0mm×50mm、Cytiva社製)
吸着材:吸着材用多孔質親水性ビニルポリマー(東ソー社製、液体クロマトグラフィー用充填剤)1gに対し、Fc結合性タンパク質であるFcR36i_Cys(配列番号2)を30mg反応させて得たFcR36i_Cys固定化ゲル
流速:0.07mL/分
溶媒:リン酸緩衝生理食塩水(pH7.4)
ステップグラジエント:50mMのクエン酸緩衝液(pH6.0)、50mMのクエン酸緩衝液(pH5.5)、50mMのクエン酸緩衝液(pH5.0)、50mMのクエン酸緩衝液(pH4.8)、50mMのクエン酸緩衝液(pH4.6)、50mMのクエン酸緩衝液(pH4.4)、50mMのクエン酸緩衝液(pH4.2)、50mMのクエン酸緩衝液(pH4.0)、50mMのクエン酸緩衝液(pH3.8)、50mMのクエン酸緩衝液(pH3.6)および50mMのクエン酸緩衝液(pH3.4)をこの順に3.73mLずつ添加
50mMのクエン酸緩衝液:50mMのクエン酸水溶液および50mMのクエン酸三ナトリウム水溶液の混合液
カラム温度:25℃
検出:UV(280nm)
注入量:2000μL(抗体量:5mg)
吸着材用多孔質親水性ビニルポリマー(東ソー社製、TOYOPEARL(液体クロマトグラフィー用充填剤)、体積平均粒子径:45μm)をサクションドライゲルとして1g採取し、当該ゲル表面に有するヒドロキシ基をヨードアセチル基で活性化後、国際公開第2019/083048号公報で開示のFc結合性タンパク質FcR36i_Cys(配列番号2)を30mg反応させることにより、抗体吸着材FcR36i_Cys固定化ゲルを得た。
抗体の分離に使用するクエン酸緩衝液の原液となる、50mMのクエン酸水溶液および50mMのクエン酸三ナトリウム水溶液を作製した。作製した二種類の水溶液を任意の割合で混合し、得られた混合液(クエン酸緩衝液)のpHを測定した。測定した結果から近似曲線を作成し(図1)、特定pHにおける二種類の水溶液の混合比率を算出した。図1に示されるグラフの横軸は、50mMのクエン酸水溶液および50mMのクエン酸三ナトリウム水溶液の全質量を基準とした、50mMクエン酸三ナトリウム(Citrate-3Na)水溶液の割合であり、縦軸はpHを示す。
(1)参考例1で作製した抗体吸着材(FcR36i_Cys固定化ゲル)を、φ5.0mm×50mmのCytiva社製Tricornカラム(Tricorn 5/50)に充填し、ゲル容量0.373mLのFcR36i_Cysカラムを作製した。
(2)(1)で作製したFcR36i_CysカラムをCytiva社製AKTA avant 150に接続後、上記カラムに、リン酸緩衝生理食塩水(pH7.4)(以下、PBSとも表記)を、流速0.07mL/minで、5カラムボリューム(以下、「CV」と表記;1CV=0.373mL)添加することによりカラムを平衡化した。
(3)PBSで2.5mg/mLに希釈したモノクローナル抗体(全薬工業社製リツキサン、ヒト・マウスキメラモノクローナル抗体)を、FcR36i_Cysカラムに、流速0.07mL/minで、抗体として5mg添加した。
(4)流速0.07mL/minのまま、FcR36i_CysカラムにPBSを20CV添加することで上記カラムを洗浄した。
(5)FcR36i_Cysカラムへ、50mMのクエン酸緩衝液(pH6.0)、50mMのクエン酸緩衝液(pH5.5)、50mMのクエン酸緩衝液(pH5.0)の順に10CVずつ添加し、pHを段階的に低下させた(ステップグラジエント)。各pHのクエン酸緩衝液は、参考例2で決定した混合比率に基づき、50mMのクエン酸水溶液と50mMのクエン酸三ナトリウム水溶液とを混合し調製した((6)以降で用いる、他のpHのクエン酸緩衝液も同じ)。なお、pH6.0~pH5.0までのステップグラジエントを、図2では実線で示した。
(6)FcR36i_Cysカラムへ、50mMのクエン酸緩衝液(pH4.5)、50mMのクエン酸緩衝液(pH4.0)、50mMのクエン酸緩衝液(pH3.5)および50mMのクエン酸緩衝液(pH3.0)をこの順に10CVずつ添加した。このようにpHを低下幅0.5で段階的に低下させるステップグラジエントを実施し、FcR36i_Cysカラムの分離パターンを得た。また、(5)および(6)において、抗体吸着材(FcR36i_Cys固定化ゲル)から溶出したモノクローナル抗体を含む画分を、添加した各pHの緩衝液毎に分取した。なお、pH5.0から0.5ずつ段階的に低下させるステップグラジエントを、図2では破線で示した。
(7)(5)および(6)で分取した画分をPBSで16時間透析し、溶媒置換をした。
(8)TSKgel FcR-IIIA-NPRカラム(東ソー社製;以下、単にFcRIIIAカラムとも表記)を高速液体クロマトグラフィー装置(島津製作所社製)に接続した。その後、FcRIIIAカラムに50mMの塩化ナトリウム含有20mM酢酸-酢酸ナトリウム緩衝液(pH5.0)(以下、単に酢酸緩衝液とも表記)を流速0.6mL/minで30CV添加することで、FcRIIIAカラムを平衡化した。
(9)(7)で溶媒置換した、モノクローナル抗体溶液((5)および(6)で分取した画分)を、流速0.6mL/minで、5μg分、FcRIIIAカラムに添加した。
(10)流速0.6mL/minのまま酢酸緩衝液で2分洗浄後、10mMのグリシン-塩酸緩衝液(pH3.0)によるpHグラジエント(28分で10mMのグリシン-塩酸緩衝液(pH3.0)が100%となるリニアグラジエント)で吸着したモノクローナル抗体を溶出し、FcRIIIAカラムの分離パターンを得た。
実施例1の(6)で、FcR36i_Cysカラムへ、50mMのクエン酸緩衝液(pH4.8)、50mMのクエン酸緩衝液(pH4.6)、50mMのクエン酸緩衝液(pH4.4)、50mMのクエン酸緩衝液(pH4.2)、50mMのクエン酸緩衝液(pH4.0)、50mMのクエン酸緩衝液(pH3.8)、50mMのクエン酸緩衝液(pH3.6)および50mMのクエン酸緩衝液(pH3.4)をこの順に10CVずつ添加することで、pHを低下幅0.2で段階的に低下させるステップグラジエントを実施した他は、実施例1と同様の方法で、FcR36i_CysカラムおよびFcRIIIAカラムの分離パターンを得た。本実施例で実施したステップグラジエントを、図2では点線で示した。
実施例1の(6)で、FcR36i_Cysカラムへ、50mMのクエン酸緩衝液(pH4.0)および50mMのクエン酸緩衝液(pH3.0)をこの順に10CVずつ添加することで、pHを低下幅1.0で段階的に低下させるステップグラジエントを実施した他は、実施例1と同様の方法で、FcR36i_CysカラムおよびFcRIIIAカラムの分離パターンを得た。本比較例で実施したステップグラジエントを、図2では実線で示した。
実施例1の(3)で、FcR36i_Cysカラムに添加するモノクローナル抗体溶液を、アクテムラ(ロシュ社製;抗インターロイキン6モノクローナル抗体;添加量5mg)溶液とした他は、実施例1と同様の方法で、FcR36i_CysカラムおよびFcRIIIAカラムの分離パターンを得た。本実施例で実施したステップグラジエントを、図2では破線で示した。
実施例1の(3)で、FcR36i_Cysカラムに添加するモノクローナル抗体溶液を、アクテムラ(ロシュ社製;抗インターロイキン6モノクローナル抗体;添加量5mg)溶液とし、実施例1の(6)で実施するステップグラジエントを実施例2に記載の方法で行なった他は、実施例1と同様の方法で、FcR36i_CysカラムおよびFcRIIIAカラムの分離パターンを得た。本実施例で実施したステップグラジエントを、図2では点線で示した。
実施例1の(3)で、FcR36i_Cysカラムに添加するモノクローナル抗体溶液をアービタックス(メルクセローノ社製;ヒト・マウスキメラ化モノクローナル抗体;添加量5mg)溶液とした他は、実施例1と同様の方法で、FcR36i_CysカラムおよびFcRIIIAカラムの分離パターンを得た。本実施例で実施したステップグラジエントを、図2では破線で示した。
実施例1の(3)で、FcR36i_Cysカラムに添加するモノクローナル抗体溶液をアービタックス(メルクセローノ社製;ヒト・マウスキメラ化モノクローナル抗体;添加量5mg)溶液とし、実施例1(6)で実施するステップグラジエントを実施例2に記載の方法で行なった他は、実施例1と同様の方法で、FcR36i_CysカラムおよびFcRIIIAカラムの分離パターンを得た。本実施例で実施したステップグラジエントを、図2では点線で示した。
<1>参考例1で作製した抗体吸着材(FcR36i_Cys固定化ゲル)を、φ5.0mm×50mmのCytiva社製Tricornカラム(Tricorn 5/50)に充填し、ゲル容量0.982mLのFcR36i_Cysカラムを作製した。
<2><1>で作製したFcR36i_CysカラムをCytiva社製AKTA avant 150に接続後、上記カラムに、PBS(pH7.4)を、流速0.20mL/minで、5CV添加することによりカラムを平衡化した。
<3>PBSで5.0mg/mLに希釈したモノクローナル抗体(全薬工業社製リツキサン、ヒト・マウスキメラモノクローナル抗体)を、FcR36i_Cysカラムに、流速0.20mL/minで、抗体として5mg添加した。
<4>流速0.20mL/minのまま、FcR36i_CysカラムにPBSを20CV添加することで上記カラムを洗浄した。
<5>FcR36i_Cysカラムへ、50mMのクエン酸緩衝液(pH6.0)、50mMのクエン酸緩衝液(pH5.5)、50mMのクエン酸緩衝液(pH5.0)および50mMのクエン酸緩衝液(pH4.8)をこの順に10CVずつ添加し、pHを段階的に低下させた(ステップグラジエント)。
<6>FcR36i_Cysカラムへ、50mMのクエン酸緩衝液(pH4.6)、50mMのクエン酸緩衝液(pH4.4)、50mMのクエン酸緩衝液(pH4.2)、50mMのクエン酸緩衝液(pH4.0)および50mMのクエン酸緩衝液(pH3.8)をこの順に30CVずつ添加した後、50mMのクエン酸緩衝液(pH3.6)および50mMのクエン酸緩衝液(pH3.4)をこの順に10CVずつ添加した。このようにpHを低下幅0.2で段階的に低下させるステップグラジエントを実施し、FcR36i_Cysカラムの分離パターンを得た。また、<5>および<6>において、抗体吸着材(FcR36i_Cys固定化ゲル)から溶出したモノクローナル抗体を含む画分を、添加した各pHの緩衝液毎に分取した。本例で実施したステップグラジエントを、図17において実線で示した。
<7><5>および<6>で分取した画分をPBSで16時間透析し、溶媒置換をした。
<8>FcRIIIAカラムを高速液体クロマトグラフィー装置(島津製作所社製)に接続した。その後、FcRIIIAカラムに50mMの塩化ナトリウム含有20mM酢酸-酢酸ナトリウム緩衝液(pH5.0)を流速0.6mL/minで30CV添加することで、FcRIIIAカラムを平衡化した。
<9><7>で溶媒置換した、モノクローナル抗体溶液(<5>および<6>で分取した画分)を、流速0.6mL/minで、5μg分、FcRIIIAカラムに添加した。
<10>流速0.6mL/minのまま酢酸緩衝液で2分洗浄後、10mMのグリシン-塩酸緩衝液(pH3.0)によるpHグラジエント(28分で10mMのグリシン-塩酸緩衝液(pH3.0)が100%となるリニアグラジエント)で吸着したモノクローナル抗体を溶出し、FcRIIIAカラムの分離パターンを得た。
実施例7の<3>で、FcR36i_Cysカラムに添加するモノクローナル抗体(全薬工業社製リツキサン、ヒト・マウスキメラモノクローナル抗体)の量を10mgとした他は、実施例7と同様の方法で、FcR36i_CysカラムおよびFcRIIIAカラムの分離パターンを得た。本例で実施したステップグラジエントを図17に示した。
実施例7の<3>で、FcR36i_Cysカラムに添加するモノクローナル抗体(全薬工業社製リツキサン、ヒト・マウスキメラモノクローナル抗体)の量を20mgとした他は、実施例7と同様の方法で、FcR36i_CysカラムおよびFcRIIIAカラムの分離パターンを得た。本例で実施したステップグラジエントを図17に示した。
実施例7の<3>で、FcR36i_Cysカラムに添加するモノクローナル抗体(全薬工業社製リツキサン、ヒト・マウスキメラモノクローナル抗体)の量を30mgとした他は、実施例7と同様の方法で、FcR36i_CysカラムおよびFcRIIIAカラムの分離パターンを得た。本例で実施したステップグラジエントを図17に示した。
実施例7の<3>で、FcR36i_Cysカラムに添加するモノクローナル抗体(全薬工業社製リツキサン、ヒト・マウスキメラモノクローナル抗体)の量を40mgとした他は、実施例7と同様の方法で、FcR36i_CysカラムおよびFcRIIIAカラムの分離パターンを得た。本例で実施したステップグラジエントを図17に示した。
<1>実施例7で分取した図18のF2画分、並びに実施例8で分取した図20のF1、F2及びF4画分のそれぞれに、RapiGest SF溶液(GlycoWorks RapiFluor-MS N-Glycanキット[Waters社製]に添付)を添加後、90℃で3分間熱処理することで、これらの画分中に含まれる抗体を変性させた。熱処理後の抗体を、Rapid PNGaseF(New England Biolabs社製)で処理し、当該抗体が有していた糖鎖を切り出した。
<2><1>で切り出した糖鎖に対し、RapiFlour-MS試薬溶液(上記Waters社製キットに添付)を添加することで蛍光標識した。標識した糖鎖は、親水性相互作用液体クロマトグラフィー(HILIC)カラムで精製した。
<3><2>で得られた蛍光標識糖鎖をGlycan BEH Amideカラム(Waters社製)で分離後、質量分析器に供して当該糖鎖の分子量情報を取得した。Glycan BEH Amideカラムで得られたクロマトグラムのリテンションタイムと照合し、糖鎖構造を分析した。
NeuAc:N-アセチルノイラミン酸
Gal:ガラクトース
GlcNAc:N-アセチルグルコサミン
Man:マンノース
Fuc:フコース
RF:RapiFluor-MS 蛍光標識
Claims (16)
- 不溶性多孔質担体と当該担体に固定化されたFc結合性タンパク質とを含む抗体吸着材を充填したカラムに、抗体を含む溶液を添加し、当該抗体を前記抗体吸着材に吸着させる工程と、
前記カラムに緩衝液を添加し、前記抗体吸着材に吸着した前記抗体をpHグラジエントで溶出させる工程と、
を備える抗体の分離方法であって、
前記pHグラジエントが、前記緩衝液のpHを段階的に低下させるステップグラジエントであり、
当該pHの低下幅が0.1以上1未満である、方法。 - 前記不溶性多孔質担体の体積平均粒子径が30~150μmである、請求項1に記載の方法。
- 前記緩衝液が、pH3.0以上6.0以下の範囲で緩衝能を有し、かつ当該範囲内にpKaを複数有する緩衝物質を含む溶液である、請求項1に記載の方法。
- 前記抗体吸着材の体積に対する前記抗体の質量の比が、1mg/1.0mL~50mg/0.1mLである、請求項1に記載の方法。
- 前記Fc結合性タンパク質がヒトFcγRIIIaである、請求項1~4のいずれか一項に記載の方法。
- 抗体の分離方法が、当該抗体が有する糖鎖構造の違いに基づく抗体の分離方法である、請求項5に記載の方法。
- 前記糖鎖構造の違いが、当該糖鎖構造中の非還元末端のガラクトース残基数の違いである、請求項6に記載の方法。
- 前記ヒトFcγRIIIaが、下記(1)、下記(2)または下記(3)に記載のポリペプチドである、請求項5に記載の方法。
(1)配列番号1に記載のアミノ酸配列のうち17番目のグリシン残基(Gly)から192番目のグルタミン残基(Gln)までのアミノ酸配列を含むポリペプチド
(2)配列番号1に記載のアミノ酸配列のうち17番目のグリシン残基(Gly)から192番目のグルタミン残基(Gln)までのアミノ酸配列において、1以上のアミノ酸残基の置換、欠失、挿入または付加を有し、かつ前記抗体への結合活性を有するポリペプチド
(3)配列番号1に記載のアミノ酸配列のうち17番目のグリシン残基(Gly)から192番目のグルタミン残基(Gln)までのアミノ酸配列と70%以上の相同性を有し、かつ前記抗体への結合活性を有するポリペプチド - 抗体組成物であって、
モノクローナル抗体溶液を下記測定条件で分画した場合にpHが4.0以下の下記クエン酸緩衝液で溶出される抗体を、前記抗体組成物の全質量基準で15質量%以上含む、抗体組成物。
(測定条件)
カラム:Tricorn 5/50(φ5.0mm×50mm、Cytiva社製)
吸着材:吸着材用多孔質親水性ビニルポリマー(東ソー社製、TOYOPEARL(液体クロマトグラフィー用充填剤)、体積平均粒子径:45μm)1gに対し、Fc結合性タンパク質であるFcR36i_Cys(配列番号2)を30mg反応させて得たFcR36i_Cys固定化ゲル
流速:0.07mL/分
溶媒:リン酸緩衝生理食塩水(pH7.4)
ステップグラジエント:50mMのクエン酸緩衝液(pH6.0)、50mMのクエン酸緩衝液(pH5.5)、50mMのクエン酸緩衝液(pH5.0)、50mMのクエン酸緩衝液(pH4.8)、50mMのクエン酸緩衝液(pH4.6)、50mMのクエン酸緩衝液(pH4.4)、50mMのクエン酸緩衝液(pH4.2)、50mMのクエン酸緩衝液(pH4.0)、50mMのクエン酸緩衝液(pH3.8)、50mMのクエン酸緩衝液(pH3.6)および50mMのクエン酸緩衝液(pH3.4)をこの順に3.73mLずつ添加
50mMのクエン酸緩衝液:50mMのクエン酸水溶液および50mMのクエン酸三ナトリウム水溶液の混合液
カラム温度:25℃
検出:UV(280nm)
注入量:2000μL(抗体量:5mg) - 抗体組成物であって、
モノクローナル抗体溶液を下記測定条件で分画した場合にpHが4.2以上の下記クエン酸緩衝液で溶出される抗体を、前記抗体組成物の全質量基準で15質量%以上含む、抗体組成物。
(測定条件)
カラム:Tricorn 5/50(φ5.0mm×50mm、Cytiva社製)
吸着材:吸着材用多孔質親水性ビニルポリマー(東ソー社製、TOYOPEARL(液体クロマトグラフィー用充填剤)、体積平均粒子径:45μm)1gに対し、Fc結合性タンパク質であるFcR36i_Cys(配列番号2)を30mg反応させて得たFcR36i_Cys固定化ゲル
流速:0.07mL/分
溶媒:リン酸緩衝生理食塩水(pH7.4)
ステップグラジエント:50mMのクエン酸緩衝液(pH6.0)、50mMのクエン酸緩衝液(pH5.5)、50mMのクエン酸緩衝液(pH5.0)、50mMのクエン酸緩衝液(pH4.8)、50mMのクエン酸緩衝液(pH4.6)、50mMのクエン酸緩衝液(pH4.4)、50mMのクエン酸緩衝液(pH4.2)、50mMのクエン酸緩衝液(pH4.0)、50mMのクエン酸緩衝液(pH3.8)、50mMのクエン酸緩衝液(pH3.6)および50mMのクエン酸緩衝液(pH3.4)をこの順に3.73mLずつ添加
50mMのクエン酸緩衝液:50mMのクエン酸水溶液および50mMのクエン酸三ナトリウム水溶液の混合液
カラム温度:25℃
検出:UV(280nm)
注入量:2000μL(抗体量:5mg) - 抗体溶液の濃縮物であって、
前記抗体溶液および前記濃縮物は、モノクローナル抗体溶液を下記測定条件で分画した場合にpHが4.0以下の下記クエン酸緩衝液で溶出される抗体を含み、
前記濃縮物の全量に対する前記抗体の含有量が、前記抗体溶液の全量に対する前記抗体の含有量の2倍以上である、濃縮物。
(測定条件)
カラム:Tricorn 5/50(φ5.0mm×50mm、Cytiva社製)
吸着材:吸着材用多孔質親水性ビニルポリマー(東ソー社製、TOYOPEARL(液体クロマトグラフィー用充填剤)、体積平均粒子径:45μm)1gに対し、Fc結合性タンパク質であるFcR36i_Cys(配列番号2)を30mg反応させて得たFcR36i_Cys固定化ゲル
流速:0.07mL/分
溶媒:リン酸緩衝生理食塩水(pH7.4)
ステップグラジエント:50mMのクエン酸緩衝液(pH6.0)、50mMのクエン酸緩衝液(pH5.5)、50mMのクエン酸緩衝液(pH5.0)、50mMのクエン酸緩衝液(pH4.8)、50mMのクエン酸緩衝液(pH4.6)、50mMのクエン酸緩衝液(pH4.4)、50mMのクエン酸緩衝液(pH4.2)、50mMのクエン酸緩衝液(pH4.0)、50mMのクエン酸緩衝液(pH3.8)、50mMのクエン酸緩衝液(pH3.6)および50mMのクエン酸緩衝液(pH3.4)をこの順に3.73mLずつ添加
50mMのクエン酸緩衝液:50mMのクエン酸水溶液および50mMのクエン酸三ナトリウム水溶液の混合液
カラム温度:25℃
検出:UV(280nm)
注入量:2000μL(抗体量:5mg) - 抗体溶液の濃縮物であって、
前記抗体溶液および前記濃縮物は、モノクローナル抗体溶液を下記測定条件で分画した場合にpHが4.2以上の下記クエン酸緩衝液で溶出される抗体を含み、
前記濃縮物の全量に対する前記抗体の含有量が、前記抗体溶液の全量に対する前記抗体の含有量の2倍以上である、濃縮物。
(測定条件)
カラム:Tricorn 5/50(φ5.0mm×50mm、Cytiva社製)
吸着材:吸着材用多孔質親水性ビニルポリマー(東ソー社製、TOYOPEARL(液体クロマトグラフィー用充填剤)、体積平均粒子径:45μm)1gに対し、Fc結合性タンパク質であるFcR36i_Cys(配列番号2)を30mg反応させて得たFcR36i_Cys固定化ゲル
流速:0.07mL/分
溶媒:リン酸緩衝生理食塩水(pH7.4)
ステップグラジエント:50mMのクエン酸緩衝液(pH6.0)、50mMのクエン酸緩衝液(pH5.5)、50mMのクエン酸緩衝液(pH5.0)、50mMのクエン酸緩衝液(pH4.8)、50mMのクエン酸緩衝液(pH4.6)、50mMのクエン酸緩衝液(pH4.4)、50mMのクエン酸緩衝液(pH4.2)、50mMのクエン酸緩衝液(pH4.0)、50mMのクエン酸緩衝液(pH3.8)、50mMのクエン酸緩衝液(pH3.6)および50mMのクエン酸緩衝液(pH3.4)をこの順に3.73mLずつ添加
50mMのクエン酸緩衝液:50mMのクエン酸水溶液および50mMのクエン酸三ナトリウム水溶液の混合液
カラム温度:25℃
検出:UV(280nm)
注入量:2000μL(抗体量:5mg) - 抗体組成物であって、
モノクローナル抗体溶液を下記測定条件で分画した場合にpHが4.0以下の下記クエン酸緩衝液で溶出される抗体を、前記抗体組成物の全質量基準で15質量%以上含む、抗体組成物。
(測定条件)
カラム:Tricorn 5/50(φ5.0mm×50mm、Cytiva社製)
吸着材:吸着材用多孔質親水性ビニルポリマー(東ソー社製、TOYOPEARL(液体クロマトグラフィー用充填剤)、体積平均粒子径:45μm)1gに対し、Fc結合性タンパク質であるFcR36i_Cys(配列番号2)を30mg反応させて得たFcR36i_Cys固定化ゲル
流速:0.20mL/分
溶媒:リン酸緩衝生理食塩水(pH7.4)
ステップグラジエント:50mMのクエン酸緩衝液(pH6.0)、50mMのクエン酸緩衝液(pH5.5)、50mMのクエン酸緩衝液(pH5.0)、50mMのクエン酸緩衝液(pH4.8)をこの順に9.82mLずつ添加、50mMのクエン酸緩衝液(pH4.6)、50mMのクエン酸緩衝液(pH4.4)、50mMのクエン酸緩衝液(pH4.2)、50mMのクエン酸緩衝液(pH4.0)、50mMのクエン酸緩衝液(pH3.8)をこの順に29.46mLずつ添加、50mMのクエン酸緩衝液(pH3.6)および50mMのクエン酸緩衝液(pH3.4)をこの順に9.82mLずつ添加
50mMのクエン酸緩衝液:50mMのクエン酸水溶液および50mMのクエン酸三ナトリウム水溶液の混合液
カラム温度:25℃
検出:UV(280nm)
注入量:1000-8000μL(抗体量:5-40mg) - 抗体組成物であって、
モノクローナル抗体溶液を下記測定条件で分画した場合にpHが4.2以上の下記クエン酸緩衝液で溶出される抗体を、前記抗体組成物の全質量基準で15質量%以上含む、抗体組成物。
(測定条件)
カラム:Tricorn 5/50(φ5.0mm×50mm、Cytiva社製)
吸着材:吸着材用多孔質親水性ビニルポリマー(東ソー社製、TOYOPEARL(液体クロマトグラフィー用充填剤)、体積平均粒子径:45μm)1gに対し、Fc結合性タンパク質であるFcR36i_Cys(配列番号2)を30mg反応させて得たFcR36i_Cys固定化ゲル
流速:0.20mL/分
溶媒:リン酸緩衝生理食塩水(pH7.4)
ステップグラジエント:50mMのクエン酸緩衝液(pH6.0)、50mMのクエン酸緩衝液(pH5.5)、50mMのクエン酸緩衝液(pH5.0)、50mMのクエン酸緩衝液(pH4.8)をこの順に9.82mLずつ添加、50mMのクエン酸緩衝液(pH4.6)、50mMのクエン酸緩衝液(pH4.4)、50mMのクエン酸緩衝液(pH4.2)、50mMのクエン酸緩衝液(pH4.0)、50mMのクエン酸緩衝液(pH3.8)をこの順に29.46mLずつ添加、50mMのクエン酸緩衝液(pH3.6)および50mMのクエン酸緩衝液(pH3.4)をこの順に9.82mLずつ添加
50mMのクエン酸緩衝液:50mMのクエン酸水溶液および50mMのクエン酸三ナトリウム水溶液の混合液
カラム温度:25℃
検出:UV(280nm)
注入量:1000-8000μL(抗体量:5-40mg) - 抗体溶液の濃縮物であって、
前記抗体溶液および前記濃縮物は、モノクローナル抗体溶液を下記測定条件で分画した場合にpHが4.0以下の下記クエン酸緩衝液で溶出される抗体を含み、
前記濃縮物の全量に対する前記抗体の含有量が、前記抗体溶液の全量に対する前記抗体の含有量の2倍以上である、濃縮物。
(測定条件)
カラム:Tricorn 5/50(φ5.0mm×50mm、Cytiva社製)
吸着材:吸着材用多孔質親水性ビニルポリマー(東ソー社製、TOYOPEARL(液体クロマトグラフィー用充填剤)、体積平均粒子径:45μm)1gに対し、Fc結合性タンパク質であるFcR36i_Cys(配列番号2)を30mg反応させて得たFcR36i_Cys固定化ゲル
流速:0.20mL/分
溶媒:リン酸緩衝生理食塩水(pH7.4)
ステップグラジエント:50mMのクエン酸緩衝液(pH6.0)、50mMのクエン酸緩衝液(pH5.5)、50mMのクエン酸緩衝液(pH5.0)、50mMのクエン酸緩衝液(pH4.8)をこの順に9.82mLずつ添加、50mMのクエン酸緩衝液(pH4.6)、50mMのクエン酸緩衝液(pH4.4)、50mMのクエン酸緩衝液(pH4.2)、50mMのクエン酸緩衝液(pH4.0)、50mMのクエン酸緩衝液(pH3.8)をこの順に29.46mLずつ添加、50mMのクエン酸緩衝液(pH3.6)および50mMのクエン酸緩衝液(pH3.4)をこの順に9.82mLずつ添加
50mMのクエン酸緩衝液:50mMのクエン酸水溶液および50mMのクエン酸三ナトリウム水溶液の混合液
カラム温度:25℃
検出:UV(280nm)
注入量:1000-8000μL(抗体量:5-40mg) - 抗体溶液の濃縮物であって、
前記抗体溶液および前記濃縮物は、モノクローナル抗体溶液を下記測定条件で分画した場合にpHが4.2以上の下記クエン酸緩衝液で溶出される抗体を含み、
前記濃縮物の全量に対する前記抗体の含有量が、前記抗体溶液の全量に対する前記抗体の含有量の2倍以上である、濃縮物。
(測定条件)
カラム:Tricorn 5/50(φ5.0mm×50mm、Cytiva社製)
吸着材:吸着材用多孔質親水性ビニルポリマー(東ソー社製、TOYOPEARL(液体クロマトグラフィー用充填剤)、体積平均粒子径:45μm)1gに対し、Fc結合性タンパク質であるFcR36i_Cys(配列番号2)を30mg反応させて得たFcR36i_Cys固定化ゲル
流速:0.20mL/分
溶媒:リン酸緩衝生理食塩水(pH7.4)
ステップグラジエント:50mMのクエン酸緩衝液(pH6.0)、50mMのクエン酸緩衝液(pH5.5)、50mMのクエン酸緩衝液(pH5.0)、50mMのクエン酸緩衝液(pH4.8)をこの順に9.82mLずつ添加、50mMのクエン酸緩衝液(pH4.6)、50mMのクエン酸緩衝液(pH4.4)、50mMのクエン酸緩衝液(pH4.2)、50mMのクエン酸緩衝液(pH4.0)、50mMのクエン酸緩衝液(pH3.8)をこの順に29.46mLずつ添加、50mMのクエン酸緩衝液(pH3.6)および50mMのクエン酸緩衝液(pH3.4)をこの順に9.82mLずつ添加
50mMのクエン酸緩衝液:50mMのクエン酸水溶液および50mMのクエン酸三ナトリウム水溶液の混合液
カラム温度:25℃
検出:UV(280nm)
注入量:1000-8000μL(抗体量:5-40mg)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22898449.8A EP4435107A1 (en) | 2021-11-29 | 2022-11-14 | Antibody isolation method |
CN202280077808.2A CN118339296A (zh) | 2021-11-29 | 2022-11-14 | 抗体分离方法 |
JP2023563628A JPWO2023095665A1 (ja) | 2021-11-29 | 2022-11-14 |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021-192859 | 2021-11-29 | ||
JP2021192859 | 2021-11-29 | ||
JP2022-020578 | 2022-02-14 | ||
JP2022020578 | 2022-02-14 | ||
JP2022-133470 | 2022-08-24 | ||
JP2022133470 | 2022-08-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023095665A1 true WO2023095665A1 (ja) | 2023-06-01 |
Family
ID=86539627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2022/042273 WO2023095665A1 (ja) | 2021-11-29 | 2022-11-14 | 抗体の分離方法 |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP4435107A1 (ja) |
JP (1) | JPWO2023095665A1 (ja) |
WO (1) | WO2023095665A1 (ja) |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011132249A (ja) * | 2004-04-19 | 2011-07-07 | Centelion | 医薬品用のプラスミドdna組成物 |
JP2015511637A (ja) * | 2012-03-28 | 2015-04-20 | ジーイー・ヘルスケア・バイオサイエンス・アクチボラグ | アフィニティークロマトグラフィーマトリックス |
JP2015086216A (ja) | 2013-09-27 | 2015-05-07 | 東ソー株式会社 | 改良Fc結合性タンパク質、当該タンパク質の製造方法および当該タンパク質を用いた抗体吸着剤 |
JP2016169197A (ja) | 2014-06-27 | 2016-09-23 | 東ソー株式会社 | 改良Fc結合性タンパク質、当該タンパク質の製造方法および当該タンパク質を用いた抗体吸着剤 |
JP2017118871A (ja) | 2015-12-24 | 2017-07-06 | 東ソー株式会社 | 改良Fc結合性タンパク質、当該タンパク質の製造方法および当該タンパク質を用いた抗体吸着剤 |
JP2017521389A (ja) * | 2014-06-13 | 2017-08-03 | ルピン・リミテッド | TNFR:Fc融合タンパク質の精製方法 |
WO2017141910A1 (ja) | 2016-02-15 | 2017-08-24 | 東ソー株式会社 | 多孔性架橋セルロースゲル及びその製造方法 |
JP2018197224A (ja) | 2017-02-20 | 2018-12-13 | 東ソー株式会社 | 抗体の分離能が向上したFc結合性タンパク質およびそれを用いた抗体の分離方法 |
WO2019083048A1 (ja) | 2017-10-27 | 2019-05-02 | 東ソー株式会社 | アルカリ耐性が向上したFc結合性タンパク質、当該タンパク質の製造方法、当該タンパク質を用いた抗体吸着剤および当該抗体吸着剤を用いて抗体を分離する方法 |
JP2020117454A (ja) * | 2019-01-23 | 2020-08-06 | 株式会社カネカ | 免疫グロブリンの製造方法 |
WO2021210662A1 (ja) * | 2020-04-17 | 2021-10-21 | 小野薬品工業株式会社 | タンパク質製剤原薬の着色除去方法 |
-
2022
- 2022-11-14 EP EP22898449.8A patent/EP4435107A1/en active Pending
- 2022-11-14 WO PCT/JP2022/042273 patent/WO2023095665A1/ja active Application Filing
- 2022-11-14 JP JP2023563628A patent/JPWO2023095665A1/ja active Pending
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011132249A (ja) * | 2004-04-19 | 2011-07-07 | Centelion | 医薬品用のプラスミドdna組成物 |
JP2015511637A (ja) * | 2012-03-28 | 2015-04-20 | ジーイー・ヘルスケア・バイオサイエンス・アクチボラグ | アフィニティークロマトグラフィーマトリックス |
JP2015086216A (ja) | 2013-09-27 | 2015-05-07 | 東ソー株式会社 | 改良Fc結合性タンパク質、当該タンパク質の製造方法および当該タンパク質を用いた抗体吸着剤 |
JP2017521389A (ja) * | 2014-06-13 | 2017-08-03 | ルピン・リミテッド | TNFR:Fc融合タンパク質の精製方法 |
JP2016169197A (ja) | 2014-06-27 | 2016-09-23 | 東ソー株式会社 | 改良Fc結合性タンパク質、当該タンパク質の製造方法および当該タンパク質を用いた抗体吸着剤 |
JP2017118871A (ja) | 2015-12-24 | 2017-07-06 | 東ソー株式会社 | 改良Fc結合性タンパク質、当該タンパク質の製造方法および当該タンパク質を用いた抗体吸着剤 |
WO2017141910A1 (ja) | 2016-02-15 | 2017-08-24 | 東ソー株式会社 | 多孔性架橋セルロースゲル及びその製造方法 |
JP2018197224A (ja) | 2017-02-20 | 2018-12-13 | 東ソー株式会社 | 抗体の分離能が向上したFc結合性タンパク質およびそれを用いた抗体の分離方法 |
WO2019083048A1 (ja) | 2017-10-27 | 2019-05-02 | 東ソー株式会社 | アルカリ耐性が向上したFc結合性タンパク質、当該タンパク質の製造方法、当該タンパク質を用いた抗体吸着剤および当該抗体吸着剤を用いて抗体を分離する方法 |
JP2020117454A (ja) * | 2019-01-23 | 2020-08-06 | 株式会社カネカ | 免疫グロブリンの製造方法 |
WO2021210662A1 (ja) * | 2020-04-17 | 2021-10-21 | 小野薬品工業株式会社 | タンパク質製剤原薬の着色除去方法 |
Non-Patent Citations (1)
Title |
---|
Y. YAGIS. SUZUKI: "Characterization of Oligosaccharides in Therapeutic Antibodies", CHROMATOGRAPHY, vol. 34, no. 2, 2013, pages 83 - 88, XP009537563 |
Also Published As
Publication number | Publication date |
---|---|
EP4435107A1 (en) | 2024-09-25 |
JPWO2023095665A1 (ja) | 2023-06-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3233891B1 (en) | Modified kappa light chain-binding polypeptides | |
JP4776615B2 (ja) | 抗体精製 | |
EP2121014B1 (en) | Enhanced capacity and purification of antibodies by mixed mode chromatography in the presence of aqueous-soluble nonionic organic polymers | |
KR101838039B1 (ko) | 단백질 a 기반 크로마토그래피를 이용한 단백질 순도의 증가 방법 | |
JP2015502959A (ja) | IgG2ジスルフィドアイソフォームの分離 | |
KR101700580B1 (ko) | 양이온 교환 크로마토그래피를 이용한 항체의 아형 분리 방법 | |
JP2020531557A (ja) | タンパク質の精製方法 | |
WO2023095665A1 (ja) | 抗体の分離方法 | |
EP3962923B1 (en) | Method for separation of antibodies or antibody fragments being devoid of an fc region capable of binding to protein a | |
JP2022539241A (ja) | グリコフォームの精製 | |
WO2015118119A1 (en) | Antibody process | |
KR20180083409A (ko) | 이온 교환 크로마토그래피에서의 개선된 단백질 분리 | |
CA2895330A1 (en) | Methods of using ion exchange chromatography to control levels of high mannose glycoforms | |
CN118339296A (zh) | 抗体分离方法 | |
CN114729003A (zh) | 提高离子交换色谱过程中抗体产率的方法 | |
WO2021099528A1 (en) | Eluate collection during antibody chromatography | |
Serres et al. | Purification of monoclonal antibodies on dextran-coated silica support grafted by thiophilic ligand | |
WO2022222949A1 (zh) | 一种双特异性抗体的纯化方法 | |
Mahassni et al. | Purification of a murine IgM monoclonal antibody | |
JP2022141049A (ja) | κ鎖を含む抗体の製造方法 | |
JP2024000977A (ja) | 抗体の分析方法 | |
CN117126227A (zh) | 表面活性剂在疏水层析纯化蛋白中提高回收率的应用 | |
AU2017347809A1 (en) | Purification process for removal of tyrosine sulfation antibody variants; purified compositions |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22898449 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2023563628 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18709920 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280077808.2 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2022898449 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2022898449 Country of ref document: EP Effective date: 20240621 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |