JP6329179B2 - タンパク質精製方法 - Google Patents
タンパク質精製方法 Download PDFInfo
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- JP6329179B2 JP6329179B2 JP2015555968A JP2015555968A JP6329179B2 JP 6329179 B2 JP6329179 B2 JP 6329179B2 JP 2015555968 A JP2015555968 A JP 2015555968A JP 2015555968 A JP2015555968 A JP 2015555968A JP 6329179 B2 JP6329179 B2 JP 6329179B2
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- Prior art keywords
- protein
- concentration
- salt
- precipitate
- acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000034 method Methods 0.000 title claims description 110
- 238000001742 protein purification Methods 0.000 title description 3
- 102000004169 proteins and genes Human genes 0.000 claims description 216
- 108090000623 proteins and genes Proteins 0.000 claims description 216
- 235000002639 sodium chloride Nutrition 0.000 claims description 156
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 148
- 150000003839 salts Chemical class 0.000 claims description 145
- 229920001223 polyethylene glycol Polymers 0.000 claims description 82
- 239000002202 Polyethylene glycol Substances 0.000 claims description 81
- 239000011780 sodium chloride Substances 0.000 claims description 75
- 239000002244 precipitate Substances 0.000 claims description 62
- 238000002360 preparation method Methods 0.000 claims description 59
- POJWUDADGALRAB-UHFFFAOYSA-N allantoin Chemical class NC(=O)NC1NC(=O)NC1=O POJWUDADGALRAB-UHFFFAOYSA-N 0.000 claims description 57
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 claims description 45
- 239000000047 product Substances 0.000 claims description 44
- 229920000620 organic polymer Polymers 0.000 claims description 43
- 238000004113 cell culture Methods 0.000 claims description 36
- 239000007787 solid Substances 0.000 claims description 34
- POJWUDADGALRAB-PVQJCKRUSA-N Allantoin Natural products NC(=O)N[C@@H]1NC(=O)NC1=O POJWUDADGALRAB-PVQJCKRUSA-N 0.000 claims description 27
- 229960000458 allantoin Drugs 0.000 claims description 27
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- 230000006920 protein precipitation Effects 0.000 claims description 20
- 108010077544 Chromatin Proteins 0.000 claims description 19
- 210000003483 chromatin Anatomy 0.000 claims description 19
- 239000006259 organic additive Substances 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 16
- MBYLVOKEDDQJDY-UHFFFAOYSA-N tris(2-aminoethyl)amine Chemical compound NCCN(CCN)CCN MBYLVOKEDDQJDY-UHFFFAOYSA-N 0.000 claims description 16
- CIKWKGFPFXJVGW-UHFFFAOYSA-N ethacridine Chemical compound C1=C(N)C=CC2=C(N)C3=CC(OCC)=CC=C3N=C21 CIKWKGFPFXJVGW-UHFFFAOYSA-N 0.000 claims description 14
- FBUKVWPVBMHYJY-UHFFFAOYSA-N nonanoic acid Chemical compound CCCCCCCCC(O)=O FBUKVWPVBMHYJY-UHFFFAOYSA-N 0.000 claims description 14
- 239000002253 acid Substances 0.000 claims description 13
- 229960001588 ethacridine Drugs 0.000 claims description 12
- 229920000642 polymer Polymers 0.000 claims description 11
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- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 8
- 150000001412 amines Chemical class 0.000 claims description 8
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 claims description 8
- 125000000022 2-aminoethyl group Chemical group [H]C([*])([H])C([H])([H])N([H])[H] 0.000 claims description 7
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 7
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- 235000011130 ammonium sulphate Nutrition 0.000 claims description 7
- GHVNFZFCNZKVNT-UHFFFAOYSA-N Decanoic acid Natural products CCCCCCCCCC(O)=O GHVNFZFCNZKVNT-UHFFFAOYSA-N 0.000 claims description 5
- OBETXYAYXDNJHR-UHFFFAOYSA-N alpha-ethylcaproic acid Natural products CCCCC(CC)C(O)=O OBETXYAYXDNJHR-UHFFFAOYSA-N 0.000 claims description 5
- NBZBKCUXIYYUSX-UHFFFAOYSA-N iminodiacetic acid Chemical compound OC(=O)CNCC(O)=O NBZBKCUXIYYUSX-UHFFFAOYSA-N 0.000 claims description 5
- 229910000160 potassium phosphate Inorganic materials 0.000 claims description 5
- 235000011009 potassium phosphates Nutrition 0.000 claims description 5
- 239000001488 sodium phosphate Substances 0.000 claims description 5
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- AWQSAIIDOMEEOD-UHFFFAOYSA-N 5,5-Dimethyl-4-(3-oxobutyl)dihydro-2(3H)-furanone Chemical compound CC(=O)CCC1CC(=O)OC1(C)C AWQSAIIDOMEEOD-UHFFFAOYSA-N 0.000 claims description 4
- 108010008281 Recombinant Fusion Proteins Proteins 0.000 claims description 4
- 102000007056 Recombinant Fusion Proteins Human genes 0.000 claims description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 4
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 4
- 235000011056 potassium acetate Nutrition 0.000 claims description 4
- 239000001103 potassium chloride Substances 0.000 claims description 4
- 235000011164 potassium chloride Nutrition 0.000 claims description 4
- 239000001508 potassium citrate Substances 0.000 claims description 4
- 229960002635 potassium citrate Drugs 0.000 claims description 4
- QEEAPRPFLLJWCF-UHFFFAOYSA-K potassium citrate (anhydrous) Chemical compound [K+].[K+].[K+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O QEEAPRPFLLJWCF-UHFFFAOYSA-K 0.000 claims description 4
- 235000011082 potassium citrates Nutrition 0.000 claims description 4
- 239000001632 sodium acetate Substances 0.000 claims description 4
- 235000017281 sodium acetate Nutrition 0.000 claims description 4
- 239000001509 sodium citrate Substances 0.000 claims description 4
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 4
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 4
- 235000011152 sodium sulphate Nutrition 0.000 claims description 4
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 4
- GYSCBCSGKXNZRH-UHFFFAOYSA-N 1-benzothiophene-2-carboxamide Chemical compound C1=CC=C2SC(C(=O)N)=CC2=C1 GYSCBCSGKXNZRH-UHFFFAOYSA-N 0.000 claims description 3
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 3
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 3
- 235000011151 potassium sulphates Nutrition 0.000 claims description 3
- 235000011083 sodium citrates Nutrition 0.000 claims description 3
- 235000011008 sodium phosphates Nutrition 0.000 claims description 3
- YWYZEGXAUVWDED-UHFFFAOYSA-N triammonium citrate Chemical compound [NH4+].[NH4+].[NH4+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O YWYZEGXAUVWDED-UHFFFAOYSA-N 0.000 claims description 3
- ADLXTJMPCFOTOO-BQYQJAHWSA-N (E)-non-2-enoic acid Chemical compound CCCCCC\C=C\C(O)=O ADLXTJMPCFOTOO-BQYQJAHWSA-N 0.000 claims description 2
- 239000004254 Ammonium phosphate Substances 0.000 claims description 2
- 229910000148 ammonium phosphate Inorganic materials 0.000 claims description 2
- 235000019289 ammonium phosphates Nutrition 0.000 claims description 2
- 210000001124 body fluid Anatomy 0.000 claims description 2
- 239000010839 body fluid Substances 0.000 claims description 2
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims description 2
- 235000013336 milk Nutrition 0.000 claims description 2
- 239000008267 milk Substances 0.000 claims description 2
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- 210000002381 plasma Anatomy 0.000 claims description 2
- 210000002966 serum Anatomy 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims 1
- MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical compound OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 claims 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 claims 1
- 235000018102 proteins Nutrition 0.000 description 202
- 239000002245 particle Substances 0.000 description 52
- 238000001556 precipitation Methods 0.000 description 44
- 150000002500 ions Chemical class 0.000 description 43
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- 125000000524 functional group Chemical group 0.000 description 25
- 229910052751 metal Inorganic materials 0.000 description 25
- 239000002184 metal Substances 0.000 description 25
- JKMHFZQWWAIEOD-UHFFFAOYSA-N 2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanesulfonic acid Chemical compound OCC[NH+]1CCN(CCS([O-])(=O)=O)CC1 JKMHFZQWWAIEOD-UHFFFAOYSA-N 0.000 description 23
- 210000004027 cell Anatomy 0.000 description 23
- 239000000758 substrate Substances 0.000 description 22
- 229960002446 octanoic acid Drugs 0.000 description 21
- 238000000746 purification Methods 0.000 description 21
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- 239000005635 Caprylic acid (CAS 124-07-2) Substances 0.000 description 17
- 238000002474 experimental method Methods 0.000 description 17
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- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 14
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- 229910052739 hydrogen Inorganic materials 0.000 description 7
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- VSIIXMUUUJUKCM-UHFFFAOYSA-D pentacalcium;fluoride;triphosphate Chemical compound [F-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O VSIIXMUUUJUKCM-UHFFFAOYSA-D 0.000 description 7
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- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 5
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- CXKWCBBOMKCUKX-UHFFFAOYSA-M methylene blue Chemical compound [Cl-].C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 CXKWCBBOMKCUKX-UHFFFAOYSA-M 0.000 description 5
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- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 description 1
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- GPKJTRJOBQGKQK-UHFFFAOYSA-N quinacrine Chemical compound C1=C(OC)C=C2C(NC(C)CCCN(CC)CC)=C(C=CC(Cl)=C3)C3=NC2=C1 GPKJTRJOBQGKQK-UHFFFAOYSA-N 0.000 description 1
- SOUHUMACVWVDME-UHFFFAOYSA-N safranin O Chemical compound [Cl-].C12=CC(N)=CC=C2N=C2C=CC(N)=CC2=[N+]1C1=CC=CC=C1 SOUHUMACVWVDME-UHFFFAOYSA-N 0.000 description 1
- 125000000467 secondary amino group Chemical group [H]N([*:1])[*:2] 0.000 description 1
- 238000001542 size-exclusion chromatography Methods 0.000 description 1
- VGTPCRGMBIAPIM-UHFFFAOYSA-M sodium thiocyanate Chemical compound [Na+].[S-]C#N VGTPCRGMBIAPIM-UHFFFAOYSA-M 0.000 description 1
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- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
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- 239000002888 zwitterionic surfactant Substances 0.000 description 1
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
- C07K1/30—Extraction; Separation; Purification by precipitation
- C07K1/303—Extraction; Separation; Purification by precipitation by salting out
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
- B01D15/08—Selective adsorption, e.g. chromatography
- B01D15/26—Selective adsorption, e.g. chromatography characterised by the separation mechanism
- B01D15/36—Selective adsorption, e.g. chromatography characterised by the separation mechanism involving ionic interaction
-
- 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
- C07K1/30—Extraction; Separation; Purification by precipitation
-
- 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
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
- C07K16/2863—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants against receptors for growth factors, growth regulators
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/32—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against translation products of oncogenes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Biochemistry (AREA)
- Biophysics (AREA)
- General Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Analytical Chemistry (AREA)
- Immunology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oncology (AREA)
- Peptides Or Proteins (AREA)
Description
本願は、2013年2月6日に出願された米国の仮出願第61/761,646号、2013年2月14日に出願された仮出願第61/764,966号、2013年6月4日に出願された仮出願第61/831,099号、2013年6月29日に出願された仮出願第61/859,772号および2013年11月22日に出願された仮出願第61/907,877号の優先権を主張するものであり、参照することによって、その全体が本願に組み込まれるものとする。
式中、各Rは独立に水素または炭素数1〜4のアルキルであって、少なくとも一つのRは、必要に応じてリンカーを介して、固体支持体への付着サイトであり、X、YおよびZはそれぞれ独立した(CH2)nであり、nは2〜6の整数であり、CH2 基は必要に応じてOまたはNHにより置換されてもよい。
遠心分離および膜濾過により、1.2g/Lの抗HER2モノクローナルIgGを含有する1Lの細胞培養上清を清澄化した。この抗体の等電点は、約8.6である。1%のアラントインを添加した後、エタクリジンを最終濃度が0.025%になるように添加した。固体を濾過により除去した。等比率の正に帯電した金属親和性粒子(Bio Works TREN hi−sub)、負に帯電した金属親和性粒子(Chelex−100)および正に帯電した疎水性粒子(Dowex AG1x2 400−mesh)を結合させた。20mLのこの混合粒子を1.6×10cmのカラムに充填し、概ね生理的状態に平衡化し、300cm/hrの線流速で試料をカラムに通した。処理後のHER2には、165,663ppmの宿主細胞タンパク質が混入していた。それをpH7の18%PEG−6000溶液中で沈殿させた。上清を、平均サイズ0.22μmの孔を有する非帯電膜に通す濾過により除去した。沈殿物を50mMヘペス、18%PEG、pH7.0に再懸濁し、上清を、同じ膜による濾過により再度除去した。その後、抗体を50mMヘペス、pH7.0に溶解した。並列実験では、NaClを元の試料に添加し、塩濃度を200mMにした。200mMのNaClも再懸濁緩衝液に添加した。追加の並列実験では、NaCl濃度を400、800および1000mMに高めた。混入した宿主細胞タンパク質の濃度として、各実験での再溶解した抗体溶液中のものを測定した。そのレベルは、NaCl無添加:16,544ppm、200mMNaCl添加:1,984ppm、400mMNaCl添加:605ppm、800mMNaCl添加:50ppm、1000mMNaCl添加:32ppmであった。
120mg/LのモノクローナルIgMクローン529を含有する1Lの細胞培養上清を遠心分離および膜濾過により清澄化した。この抗体の等電点は約6.0であった。固体塩化ナトリウムを添加して、最終伝導能を25mS/cmとした。1%のアラントインを加えた後、エタクリジンを最終濃度が0.025%になるように添加した。固体を濾過により除去した。等比率の強陰イオン交換粒子(Macroprep High−Q)、負に帯電した金属親和性粒子(Chelex−100)および強陽イオン交換粒子(Macroprep High−S)を結合させた。20mLのこの混合粒子を1.6×10cmのカラムに充填し、概ね生理的状態に平衡化し、200cm/hrの線流速で試料をカラムに通した。処理後のHER2には、165,663ppmの宿主細胞タンパク質が混入していた。対照実験では、抗体を13%のPEG−6000で沈殿させ、25mS/cmの伝導能で洗浄し、精製した。残存した宿主タンパク質混入は1,383ppmだった。並列実験では、抗体を同じ手段で精製したが、47mS/cmの伝導能で行った。残存した宿主タンパク質混入は、69ppmであった。次いで、陰イオン交換および陽イオン交換クロマトグラフィーによる精製は、宿主タンパク質混入を3ppm未満に低下させた。
Claims (17)
- タンパク質調製物から抗体を精製する方法であって、該方法は、過飽和状態のアラントインの存在下、タンパク質調製物と、ヘプタン酸、オクタン酸、オクテン酸、ノナン酸、ノネノン酸及びデカン酸からなる群から選択される電気陰性有機添加剤又はエタクリジンとを接触し、かつ固体を除去してクロマチンの少なくとも90%を除去することにより前記タンパク質調製物を調整した後、
(1)生理的濃度より高濃度の非タンパク質沈殿塩の存在下に、前記抗体を非イオン性有機ポリマーにより沈殿させ、前記抗体の沈殿物を得ることを含むか、または
(2)生理的濃度より高濃度の非タンパク質沈殿塩の非存在下に、前記抗体を非イオン性有機ポリマーにより沈殿させて沈殿物を得た後、生理的濃度より高濃度の前記非タンパク質沈殿塩の存在下に該沈殿物を非イオン性有機ポリマーにより洗浄することを含み、
該沈殿または洗浄ステップは、実質的にタンパク質沈殿塩の非存在下において、行われてもよく、前記抗体の等電点の0.5pH単位以内の値に前記タンパク質調製物のpHを調節することなく行われてもよい、抗体を精製する方法。 - 前記(1)に先立って、前記調製物と、固体に固定化された2(アミノエチル)アミン(TREN)とを接触させることを更に含む、請求項1に記載の方法。
- 電気陰性有機添加剤が、オクタン酸である、請求項1に記載の方法。
- 前記(1)に先立って、前記調製物と、イミノ二酢酸又はニトリロ酢酸とを接触させることを更に含む、請求項1に記載の方法。
- 前記アラントインは、0.6〜50%、0.7〜20%、0.8〜10%、0.9〜5%、及び1〜2%からなる群から選択される範囲における過飽和の状態で含有されている、請求項1に記載の方法。
- 非イオン性有機ポリマーがポリエチレングリコール(PEG)である、請求項1に記載の方法。
- ポリマーサイズは、1000〜12000ダルトン(D)、2000〜8000Dおよび3000〜6000Dからなる群から選択される範囲内であるか、または1500D、3500D、4000Dおよび6000Dからなる群から選択される範囲内である、請求項1に記載の方法。
- 非タンパク質沈殿塩が、酢酸ナトリウム、酢酸カリウム、塩化ナトリウム、塩化カリウムおよびそれらの組み合せからなる群から選択される一つを有する、請求項1に記載の方法。
- 前記タンパク質調製物が細胞培養産物であり、非タンパク質沈殿塩を、前記細胞培養産物に、非イオン性有機ポリマーの添加後の塩濃度が生理的濃度よりも少なくとも約0.05M〜約2.0Mの範囲の増分で高い、十分な量で添加する、請求項1に記載の方法。
- 前記タンパク質調製物が細胞培養産物であり、個々の塩または非タンパク質沈殿塩の組み合せを前記細胞培養産物に添加して全体としての塩濃度を正常な生理的塩含有量よりも高くし、かつ非タンパク質沈殿塩の過剰を非イオン性有機ポリマーの添加と一体となって維持する、請求項1に記載の方法。
- 最終塩濃度が正常な生理的濃度よりも少なくとも0.05Mの増分で高くなるように、非イオン性有機ポリマーの添加とともに前記非タンパク質沈殿塩を前記タンパク質調製物に添加する、請求項1に記載の方法。
- タンパク質調製物の正味塩濃度が正常な生理的値よりも高くなるように、非タンパク質沈殿塩を200mM〜2M、300mM〜1.5M、400mM〜1M、及び500mM〜800mMからなる群から選択される範囲内で添加する、請求項1に記載の方法。
- 前記(1)において、非タンパク質沈殿塩が少なくとも0.2Mの濃度で洗浄液に含まれ、前記沈殿物中に既に存在する前記非タンパク質沈殿塩の過剰量を維持する、請求項1に記載の方法。
- 前記(1)又は(2)において、前記沈殿物を、前記抗体を沈殿状態に維持できる十分な濃度の一つまたは複数のタンパク質沈殿塩により洗浄する、請求項1に記載の方法。
- 前記タンパク質沈殿塩が、硫酸ナトリウム、硫酸カリウム、硫酸アンモニウム、リン酸ナトリウム、リン酸カリウム、リン酸アンモニウム、クエン酸ナトリウム、クエン酸カリウム、クエン酸アンモニウムおよびそれらの組み合せからなる群から選択される、請求項14に記載の方法。
- 前記抗体が、自然に発生するタンパク質、組換えタンパク質、モノクローナル抗体、IgG抗体またはIgM抗体である、請求項1に記載の方法。
- 調製物が、体液、ミルク、血漿、血清または細胞培養産物である、請求項1に記載の方法。
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US61/907,877 | 2013-11-22 | ||
PCT/SG2014/000047 WO2014123485A1 (en) | 2013-02-06 | 2014-02-05 | Protein purification methods |
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US8362217B2 (en) | 2006-12-21 | 2013-01-29 | Emd Millipore Corporation | Purification of proteins |
US8569464B2 (en) | 2006-12-21 | 2013-10-29 | Emd Millipore Corporation | Purification of proteins |
WO2008079280A1 (en) | 2006-12-21 | 2008-07-03 | Millipore Corporation | Purification of proteins |
JP2012511929A (ja) | 2008-12-16 | 2012-05-31 | イー・エム・デイー・ミリポア・コーポレイシヨン | 攪拌タンク反応器及び方法 |
EP2571903B1 (en) | 2010-05-17 | 2019-09-04 | EMD Millipore Corporation | Stimulus responsive polymers for the purification of biomolecules |
KR20150122650A (ko) * | 2013-02-28 | 2015-11-02 | 에이전시 포 사이언스, 테크놀로지 앤드 리서치 | 상승된 전도도에서 비이온성 유기 폴리머들의 존재에서의 단백질 정제 |
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