JP2008532753A - 電気濾過方法 - Google Patents
電気濾過方法 Download PDFInfo
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- JP2008532753A JP2008532753A JP2008501188A JP2008501188A JP2008532753A JP 2008532753 A JP2008532753 A JP 2008532753A JP 2008501188 A JP2008501188 A JP 2008501188A JP 2008501188 A JP2008501188 A JP 2008501188A JP 2008532753 A JP2008532753 A JP 2008532753A
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- 238000011043 electrofiltration Methods 0.000 title claims abstract description 32
- 239000012528 membrane Substances 0.000 claims abstract description 74
- 238000000034 method Methods 0.000 claims abstract description 65
- 230000005684 electric field Effects 0.000 claims abstract description 47
- 239000012466 permeate Substances 0.000 claims abstract description 40
- 229920000642 polymer Polymers 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims abstract description 7
- 238000000926 separation method Methods 0.000 claims description 31
- 102000004169 proteins and genes Human genes 0.000 claims description 16
- 108090000623 proteins and genes Proteins 0.000 claims description 16
- 239000000243 solution Substances 0.000 claims description 16
- 239000012141 concentrate Substances 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 15
- 235000018102 proteins Nutrition 0.000 claims description 15
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 6
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 claims description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 4
- 239000004471 Glycine Substances 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 4
- 239000007983 Tris buffer Substances 0.000 claims description 4
- 241000700605 Viruses Species 0.000 claims description 4
- 239000000470 constituent Substances 0.000 claims description 4
- 239000008151 electrolyte solution Substances 0.000 claims description 4
- YMAWOPBAYDPSLA-UHFFFAOYSA-N glycylglycine Chemical compound [NH3+]CC(=O)NCC([O-])=O YMAWOPBAYDPSLA-UHFFFAOYSA-N 0.000 claims description 4
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 3
- 108091032973 (ribonucleotides)n+m Proteins 0.000 claims description 2
- IHPYMWDTONKSCO-UHFFFAOYSA-N 2,2'-piperazine-1,4-diylbisethanesulfonic acid Chemical compound OS(=O)(=O)CCN1CCN(CCS(O)(=O)=O)CC1 IHPYMWDTONKSCO-UHFFFAOYSA-N 0.000 claims description 2
- 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 claims description 2
- AJTVSSFTXWNIRG-UHFFFAOYSA-N 2-[bis(2-hydroxyethyl)amino]ethanesulfonic acid Chemical compound OCC[NH+](CCO)CCS([O-])(=O)=O AJTVSSFTXWNIRG-UHFFFAOYSA-N 0.000 claims description 2
- UXFQFBNBSPQBJW-UHFFFAOYSA-N 2-amino-2-methylpropane-1,3-diol Chemical compound OCC(N)(C)CO UXFQFBNBSPQBJW-UHFFFAOYSA-N 0.000 claims description 2
- SSVKQUFYQFAQLZ-UHFFFAOYSA-N 2-morpholin-4-ylpropane-1-sulfonic acid Chemical compound OS(=O)(=O)CC(C)N1CCOCC1 SSVKQUFYQFAQLZ-UHFFFAOYSA-N 0.000 claims description 2
- HBAQYPYDRFILMT-UHFFFAOYSA-N 8-[3-(1-cyclopropylpyrazol-4-yl)-1H-pyrazolo[4,3-d]pyrimidin-5-yl]-3-methyl-3,8-diazabicyclo[3.2.1]octan-2-one Chemical class C1(CC1)N1N=CC(=C1)C1=NNC2=C1N=C(N=C2)N1C2C(N(CC1CC2)C)=O HBAQYPYDRFILMT-UHFFFAOYSA-N 0.000 claims description 2
- 108020004414 DNA Proteins 0.000 claims description 2
- 108010008488 Glycylglycine Proteins 0.000 claims description 2
- OWXMKDGYPWMGEB-UHFFFAOYSA-N HEPPS Chemical compound OCCN1CCN(CCCS(O)(=O)=O)CC1 OWXMKDGYPWMGEB-UHFFFAOYSA-N 0.000 claims description 2
- QNAYBMKLOCPYGJ-REOHCLBHSA-N L-alanine Chemical compound C[C@H](N)C(O)=O QNAYBMKLOCPYGJ-REOHCLBHSA-N 0.000 claims description 2
- HNDVDQJCIGZPNO-YFKPBYRVSA-N L-histidine Chemical compound OC(=O)[C@@H](N)CC1=CN=CN1 HNDVDQJCIGZPNO-YFKPBYRVSA-N 0.000 claims description 2
- FSVCELGFZIQNCK-UHFFFAOYSA-N N,N-bis(2-hydroxyethyl)glycine Chemical compound OCCN(CCO)CC(O)=O FSVCELGFZIQNCK-UHFFFAOYSA-N 0.000 claims description 2
- MKWKNSIESPFAQN-UHFFFAOYSA-N N-cyclohexyl-2-aminoethanesulfonic acid Chemical compound OS(=O)(=O)CCNC1CCCCC1 MKWKNSIESPFAQN-UHFFFAOYSA-N 0.000 claims description 2
- JOCBASBOOFNAJA-UHFFFAOYSA-N N-tris(hydroxymethyl)methyl-2-aminoethanesulfonic acid Chemical compound OCC(CO)(CO)NCCS(O)(=O)=O JOCBASBOOFNAJA-UHFFFAOYSA-N 0.000 claims description 2
- 108091034117 Oligonucleotide Proteins 0.000 claims description 2
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 2
- JLCPHMBAVCMARE-UHFFFAOYSA-N [3-[[3-[[3-[[3-[[3-[[3-[[3-[[3-[[3-[[3-[[3-[[5-(2-amino-6-oxo-1H-purin-9-yl)-3-[[3-[[3-[[3-[[3-[[3-[[5-(2-amino-6-oxo-1H-purin-9-yl)-3-[[5-(2-amino-6-oxo-1H-purin-9-yl)-3-hydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methyl [5-(6-aminopurin-9-yl)-2-(hydroxymethyl)oxolan-3-yl] hydrogen phosphate Polymers Cc1cn(C2CC(OP(O)(=O)OCC3OC(CC3OP(O)(=O)OCC3OC(CC3O)n3cnc4c3nc(N)[nH]c4=O)n3cnc4c3nc(N)[nH]c4=O)C(COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3CO)n3cnc4c(N)ncnc34)n3ccc(N)nc3=O)n3cnc4c(N)ncnc34)n3ccc(N)nc3=O)n3ccc(N)nc3=O)n3ccc(N)nc3=O)n3cnc4c(N)ncnc34)n3cnc4c(N)ncnc34)n3cc(C)c(=O)[nH]c3=O)n3cc(C)c(=O)[nH]c3=O)n3ccc(N)nc3=O)n3cc(C)c(=O)[nH]c3=O)n3cnc4c3nc(N)[nH]c4=O)n3cnc4c(N)ncnc34)n3cnc4c(N)ncnc34)n3cnc4c(N)ncnc34)n3cnc4c(N)ncnc34)O2)c(=O)[nH]c1=O JLCPHMBAVCMARE-UHFFFAOYSA-N 0.000 claims description 2
- 235000004279 alanine Nutrition 0.000 claims description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 2
- 229910021529 ammonia Inorganic materials 0.000 claims description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 2
- 239000004327 boric acid Substances 0.000 claims description 2
- 239000003792 electrolyte Substances 0.000 claims description 2
- 150000004676 glycans Chemical class 0.000 claims description 2
- 229940043257 glycylglycine Drugs 0.000 claims description 2
- HNDVDQJCIGZPNO-UHFFFAOYSA-N histidine Natural products OC(=O)C(N)CC1=CN=CN1 HNDVDQJCIGZPNO-UHFFFAOYSA-N 0.000 claims description 2
- 239000004310 lactic acid Substances 0.000 claims description 2
- 235000014655 lactic acid Nutrition 0.000 claims description 2
- 229920001542 oligosaccharide Polymers 0.000 claims description 2
- 150000002482 oligosaccharides Chemical class 0.000 claims description 2
- 229920001282 polysaccharide Polymers 0.000 claims description 2
- 239000005017 polysaccharide Substances 0.000 claims description 2
- 108090000765 processed proteins & peptides Proteins 0.000 claims description 2
- 102000004196 processed proteins & peptides Human genes 0.000 claims description 2
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 claims description 2
- VECXFAFHWMJFJG-UHFFFAOYSA-N OCCC(CO)(CO)C(O)=N Chemical compound OCCC(CO)(CO)C(O)=N VECXFAFHWMJFJG-UHFFFAOYSA-N 0.000 claims 1
- 125000004029 hydroxymethyl group Chemical group [H]OC([H])([H])* 0.000 claims 1
- 238000001962 electrophoresis Methods 0.000 description 15
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- 239000012228 culture supernatant Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000011091 antibody purification Methods 0.000 description 3
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- 229940021013 electrolyte solution Drugs 0.000 description 3
- 239000012526 feed medium Substances 0.000 description 3
- 239000012527 feed solution Substances 0.000 description 3
- 239000000499 gel Substances 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 239000002504 physiological saline solution Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000002415 sodium dodecyl sulfate polyacrylamide gel electrophoresis Methods 0.000 description 3
- 238000000108 ultra-filtration Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- -1 Polypropylene Polymers 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000872 buffer Substances 0.000 description 2
- 238000011210 chromatographic step Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005370 electroosmosis Methods 0.000 description 2
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- HNXGGWNCFXZSAI-UHFFFAOYSA-N 2-morpholin-2-ylethanesulfonic acid Chemical compound OS(=O)(=O)CCC1CNCCO1 HNXGGWNCFXZSAI-UHFFFAOYSA-N 0.000 description 1
- HYRHLJWTFKJITA-UHFFFAOYSA-N 3-hydroxy-2-(hydroxymethyl)propanamide Chemical compound NC(=O)C(CO)CO HYRHLJWTFKJITA-UHFFFAOYSA-N 0.000 description 1
- 241000191291 Abies alba Species 0.000 description 1
- 102000009027 Albumins Human genes 0.000 description 1
- 108010088751 Albumins Proteins 0.000 description 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 1
- 102000001554 Hemoglobins Human genes 0.000 description 1
- 108010054147 Hemoglobins Proteins 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 238000001042 affinity chromatography Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
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- 230000008901 benefit Effects 0.000 description 1
- 229920001222 biopolymer Polymers 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
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- 239000000919 ceramic Substances 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 239000012501 chromatography medium Substances 0.000 description 1
- 239000007979 citrate buffer Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011026 diafiltration Methods 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000000909 electrodialysis Methods 0.000 description 1
- 239000003480 eluent Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 210000004408 hybridoma Anatomy 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000003014 ion exchange membrane Substances 0.000 description 1
- 239000003446 ligand Substances 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 238000009931 pascalization Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D57/00—Separation, other than separation of solids, not fully covered by a single other group or subclass, e.g. B03C
- B01D57/02—Separation, other than separation of solids, not fully covered by a single other group or subclass, e.g. B03C by electrophoresis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
- B01D61/425—Electro-ultrafiltration
-
- 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
- C07K1/24—Extraction; Separation; Purification by electrochemical means
-
- 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
- C07K1/34—Extraction; Separation; Purification by filtration, ultrafiltration or reverse osmosis
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Genetics & Genomics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Biophysics (AREA)
- General Health & Medical Sciences (AREA)
- Electrochemistry (AREA)
- Medicinal Chemistry (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Urology & Nephrology (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Peptides Or Proteins (AREA)
Abstract
Description
molecules having a high molecular weight)”が特許文献2に説明されている。特許文献2には、透析の分離技術から始まって、
1種以上の分離膜を用いた可能な電池デザインそして希釈液および濃縮液用のいろいろなチャンバが記述されている。その膜は荷電していない膜およびイオン交換膜の両方であってもよい。その方法は膜を透過する透過液流れ無し(古典的な膜電気泳動)にか或は圧力による強制的な流れを伴わせて実施可能である(また以下に電気濾過としても記述する)。それは上述したデザインでか或は平行に位置する多数の通路を用いて実施可能であり、その結果として、その方法の膜領域、従って費用効果が向上するばかりでなく恐らくは多数の分離段階を連続的に実施することが可能になる。特許文献2には、BSAとヘモブロビンの分離が実施例に記述されている。その手順は一定の電圧および一定の圧力(67ミリバールの膜透過圧力)で実施され、電圧は比較的高く(160V)かつ膜透過流量は比較的低い(0.1から0.2m/秒)。そのようなパラメーター組み合わせを用いると、工業規模の時に熱の除去に対して問題が起こりかつ分離用膜の所で蛋白質の濃度が偏るであろう。
れは一般に限外濾過による濃縮および再緩衝化に続くアフィニティークロマトグラフィー段階から成る。後者は高い選択性を示しはするが、工業規模では数多くの欠点を有する。挙げられる例は下記である:
・ 処理(一般に追加的クロマトグラフィー段階)後に必要な毒性リガンド蛋白質Aが洗い流される危険性があること
・ 溶離液が示すpHが低く(<3)、それによって、その媒体にその方法の次の段階を受けさせることができるようにさらなる再緩衝化段階が必要であること。
発酵に由来する蛋白質を通常に精製する時、少なくとも上述した数の工程段階を用いて実施される。そのように工程が複雑なことから、それに伴って費用が高くなるが、本発明に従う新規な方法を用いると費用を低くすることができる。
膜電気泳動および電気濾過は今日まで産業規模でも生産規模でも実施されていない。加うるに、大部分のケースで生理学的食塩水濃度の液体が示す伝導率よりも実質的に低い伝導率を示すモデル溶液、例えば細胞培養媒体のモデル溶液などが選択されていた。
過去に実施された電気濾過の実験は一定電流または一定電圧のいずれかで行われた。そのような方法におけるバイオテクノロジー媒体および生成物溶液が示す伝導率は相対的に高いことから、電場内で高い可動性を達成、従って工程の高い生産性を達成するには、電気濾過中の伝導率を低くする必要がある。従って、そのような方法をいやしくも実験室規模以外およびモデル溶液を用いた方法以外の様式で実施することができるようにしようとする場合には下記を注目する必要がある:
を用いて中性または正電荷を有する二次的成分を除去する。
流プロファイルを指定するか、或は電流を供給材料媒体の伝導率の関数として調節する。
Uはかけられた電圧であり、そしてdは電極の間隔である。
かつ操作パラメーターを最適にすることによって、驚くべきことに、高分子を精製する時の生産性および選択性を向上させることができた。
たは強酸と弱塩基の組み合わせで構成させる。
22、24、26そして戻りライン23、25、27に通して再循環させそして電気泳動分離モジュール7の中に通して流す。膜を透過する透過液の流量を調整する目的で濃縮液用チャンバの気体空間部の中にライン12から来る窒素で圧力をかけるが、これを、下流の圧力制御装置8を用いて実施する。その下流の圧力制御装置を同様にレベルプローブ(level probe)10で調節する。
図1に示したプラントおよび図2に概略を示したモジュール7aを用いてモノクローナル抗体の分離および濃縮を実施した。発酵後に限外濾過(膜の孔径が2μm)を用いて生成物が入っている細胞培養媒体を細胞および細胞部分から分離した。前記抗体はハイブリドーマ細胞が発現するIgG型であり、それの発酵を0.8Lの撹拌型生物反応槽内で実施した。その抗体が示した等電点は6.5で大きさは150kDであった。
電場を高くしかつそれに関係させて膜を透過する透過液の透過速度を高くした電気濾過。
m/m0(HSA):濃縮液中のHSAの質量が基になった残存分率 [−]
m/m0(IgG):濃縮液中のIgGの質量が基になった残存分率 [−]
Claims (9)
- 荷電高分子および粒子を膜を電場で用いる電気濾過により精製する時の選択性および生産性を向上させる方法であって、上述した電場と前記膜を透過する透過液の流量の比率を一定に保持することを特徴とする方法。
- 電場を500から5000V/mにすることを特徴とする請求項1記載の方法。
- 濃縮液用チャンバと透過液用チャンバの間の透過液の流量を分離膜を透過する液体の流れが確保されるように調整することを特徴とする請求項1記載の方法。
- 下記の物質:蛋白質、ペプチド、DNA、RNA、オリゴヌクレオチド、オリゴ糖、多糖、ウイルス、ウイルス構成物質、細胞、細胞構成物質、鏡像異性体、ジアステレオマーの中の1種以上に処理を受けさせる前請求項記載の方法。
- 蛋白質がモノクローナルもしくはポリクローナル抗体である前請求項記載の方法。
- 膜の孔径が1から1000nmであることを特徴とする前請求項記載の方法。
- 出発溶液の伝導率が20から0.5mS/cmであることを特徴とする前請求項記載の方法。
- 用いる電解質が弱酸と弱塩基、弱酸と強塩基または強酸と弱塩基の組み合わせである前請求項のいずれか記載の方法。
- 電解質の溶液に下記の物質:ホウ酸、燐酸、N−2−(アセトアミド)−2−アミノエタンスルホン酸、N−2−(アセトアミド)イミノジ酢酸、アラニン、2−アミノ−2−メチル−1,3−プロパンジオール、アンモニア、N,N−ビス(2−ヒドロキシエチル)−2−アミノエタンスルホン酸、N,N−ビス(2−ヒドロキシエチル)グリシン、2,2−ビス(ヒドロキシエチル)イミノトリス(ヒドロキシメチル)メタン、2−(シクロヘキシルアミノ)エタンスルホン酸、酢酸、グリシン、グリシルグリシン、2−[4−(2−ヒドロキシエチル)1−ピペラジニル]エタンスルホン酸、3−[4−(2−ヒドロキシエチル)1−ピペラジニル]プロパンスルホン酸、ヒスチジン、イミダゾール、乳酸、2−モルホリノエタンスルホン酸、2−モルホリノプロパンスルホン酸、ピペラジン−1,4−ビス(2−エタンスルホン酸)、N−[トリス(ヒドロキシメチル)メチル]−2−アミノエタンスルホン酸、N−[トリス(ヒドロキシメチル)メチル]グリシン、トリエタノールアミン、トリス(ヒドロキシメチル)アミノメタン、クエン酸の中の1種以上を含ませることを特徴とする前請求項のいずれか記載の方法。
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AU2006224893B2 (en) | 2011-03-03 |
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