JP6530394B2 - 混入物除去方法 - Google Patents
混入物除去方法 Download PDFInfo
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- JP6530394B2 JP6530394B2 JP2016532164A JP2016532164A JP6530394B2 JP 6530394 B2 JP6530394 B2 JP 6530394B2 JP 2016532164 A JP2016532164 A JP 2016532164A JP 2016532164 A JP2016532164 A JP 2016532164A JP 6530394 B2 JP6530394 B2 JP 6530394B2
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- 238000012421 spiking Methods 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 239000012086 standard solution Substances 0.000 description 1
- 238000007655 standard test method Methods 0.000 description 1
- 125000003696 stearoyl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 150000003431 steroids Chemical class 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
- 229940095064 tartrate Drugs 0.000 description 1
- 229940124597 therapeutic agent Drugs 0.000 description 1
- 229940126585 therapeutic drug Drugs 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- BSVBQGMMJUBVOD-UHFFFAOYSA-N trisodium borate Chemical compound [Na+].[Na+].[Na+].[O-]B([O-])[O-] BSVBQGMMJUBVOD-UHFFFAOYSA-N 0.000 description 1
- 241001515965 unidentified phage Species 0.000 description 1
- 229940014499 ursodeoxycholate Drugs 0.000 description 1
- 229960001661 ursodiol Drugs 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 244000052613 viral pathogen Species 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Images
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- 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
- C07K14/775—Apolipopeptides
-
- A—HUMAN NECESSITIES
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- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/06—Antihyperlipidemics
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- A61P3/08—Drugs for disorders of the metabolism for glucose homeostasis
- A61P3/10—Drugs for disorders of the metabolism for glucose homeostasis for hyperglycaemia, e.g. antidiabetics
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- C07K1/14—Extraction; Separation; Purification
- C07K1/34—Extraction; Separation; Purification by filtration, ultrafiltration or reverse osmosis
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Description
Apo A−Iタンパク質濃度
概略するに、溶液中のApo A−Iタンパク質濃度は、希釈剤としてWFI(注射用水)を典型的には5〜30g/Lで使用し、280nmの吸光度を決定することによって測定した。タンパク質の計算は以下に従った:
1mMのEDTA(Titriplex)を含む4.6MのGuHCl溶液を、WFI(注射用水)、GuHCl塩およびEDTAから調製した。4.6MのGuHCl溶液のpHをNaOHでpH7.2〜7.4に調節した。
1mMのEDTA(Titriplex)を含む1.7MのGuHCl溶液は、WFI(注射用水)、GuHCl塩およびEDTAから調製した。1.7MのGuHCl溶液のpHはNaOHでpH7.2〜7.4に調節した。
透析濾過溶液は、WFIおよびNaClから調製した。透析濾過溶液の伝導度は1.0〜1.2mS/cmであった。
Apo A−I沈殿物の溶解
Apo A−I沈殿物を、4.6Mの塩酸グアニジン(GuHCl)に溶解し、均質化し、pHを7.3±0.1に調節した。
濾過溶液を、深層濾過で清澄化して、残余の濾過助剤を除去した。フィルターを注射用水(WFI)で予洗し、4.6MのGuHCl溶液で後洗浄した。後洗浄物と濾過物を組み合わせて、濾液中のGuHCl濃度は約3.5Mに達した。組み合わせた濾液を回収し、0〜30g/Lの範囲のApo A−I濃度を得た。
熱処理ではpHを7.1〜7.5に調節した。GuHCl濃度を以下の式にしたがって計算し、少なくとも3.0Mに調節した。
GuHCl=−41.4−(0.0170×タンパク質[g/L])+(41.5×密度[g/cm3])
ウイルス濾過工程の前に、混合物をWFIで希釈して、最終GuHCl濃度を1.5〜2.0M、Apo A−I濃度を0〜30g/Lの範囲とした。
ウイルス濾過工程の目的は、物理的にウイルス粒子を除去することであった。
Apo A−I試料にMVMを1000:1の比率でスパイクした。スパイクした試料を、プラノバBioEXウイルス除去フィルターに通して濾過した。様々な時間点で濾液の試料を取り出し、残存ウイルス感染力について評価した。
− 試験系の細胞毒性を測定した。
− ウイルスストックの力価を測定した。
− ウイルスの安定性を測定した。
− 干渉を測定した。
− クリアランスを測定した。
細胞毒性は、ウイルス不含試験系を使用して、細胞培養培地で連続希釈して、試料中の最終細胞毒性効果を測定する非放射活性細胞生存性分析により分析した。増殖活性がポジティブコントロールの60%未満に至った試料を、細胞毒性を有するとみなした。
ウイルス干渉は、ウイルス不含試験系の非細胞毒性濃度を、ストックウイルスの連続希釈に用いることによって、TCID50エンドポイントタイトレーションにより実施した。干渉は、干渉アッセイで得られたウイルス力価と、培養培地で実施したストックウイルスの標準TCID50分析で得られたウイルス力価とを直接比較して分析した。
ウイルス力価は、TCID50(組織培養感染用量50%)により決定した。脱塩試料の3倍連続希釈物を使用した。ウイルス感染力は、96ウェルプレート中の指標細胞のエンドポイントタイトレーションによって分析した。
BAを使用してウイルス測定分析の検出限界を低下させた。ウイルス感染性は、元試料の3mlに相当する9mlの各脱塩試料を、2つの96ウェルプレート上で指標細胞に分配させて分析した。
マイクロタイタープレート上でTCID50により計算されたウイルス力価の計算
ウイルス力価およびその誤差を、Spearman&Karberの方法(Excel Makro:kaerber3_111.xls)を使用して計算した。インプット数は、力価測定から得た。
このプロセスのウイルス減少率(LRF)は、「Virus validation studies: the design、contribution and interpretation of studies validating the inactivation and removal of viruses」(CPMP/BWP/268/95/Final;1996年2月14日)およびthe Bundesgesundheitsamt and the Paul−Ehrlich−Institute、Bundesamt fur Sera und Impfstoffe(1994年5月4日)の要件にしたがって、計算した。
細胞毒性
細胞毒性は、ウイルス不含試験系のいずれのロットでも観察されなかった。
3mlの試料を用いたバルク分析により、検出限界を、≦−0.0006log TCID50/ml(95%信頼限界)まで低下させた。試験した全ての試料は、ウイルス感染性が陰性であった。したがって、MVMの完全な除去が両方の実験の濾過を通して達成された。
この試験は、ウイルス濾過が試験物質からMVMを除去する有効性の決定を目的とした。MVMを、非常に強健な小型のノンエンベロープウイルスおよびB19Vについてのモデルウイルスとして使用した。
− 試験系の細胞毒性
− ウイルスストックの力価
− 干渉
− クリアランス
Claims (13)
- アポリポタンパク質A−I(Apo A−I)を精製するための方法であって、
a)Apo A−Iと塩酸グアニジン(GuHCl)とを含む溶液を用意する工程;および
b)該溶液を15nm〜35nmの範囲の孔径を有するフィルターを通して濾過する工程
を含み、
ここで、該溶液は、1.3〜3.0Mの範囲内の濃度でGuHClを含む前記方法。 - 溶液は、5〜30g/L、または5〜20g/L、または7〜12g/Lの範囲内のApo A−Iタンパク質濃度を含む、請求項1に記載の方法。
- 溶液は、Apo A−Iの凝集を減少させるまたは阻害する濃度でGuHClを含む、請求項1または2に記載の方法。
- 溶液は、1.5〜2.0Mの範囲内の濃度でGuHClを含む、請求項3に記載の方法。
- 溶液のpHは、7.1〜7.5の範囲内である、請求項1〜4のいずれか1項に記載の方法。
- 濾過は、0.2〜3.4バールの範囲内の圧力、および18〜26℃の範囲内の温度で実行される、請求項1〜5のいずれか1項に記載の方法。
- 溶液は、
1)Apo A−I沈殿物を4.0〜4.6MのGuHClに懸濁する工程;ならびに/または
2)該懸濁物を5〜30g/Lの範囲内のApo A−Iタンパク質濃度および/もしくは1.3M〜3.0Mの範囲内のGuHCl濃度に希釈する工程
の1つまたはそれ以上によって調製される、請求項1〜6のいずれか1項に記載の方法。 - 工程a)の前に、ウイルス不活化のために熱処理工程が実行される、または工程b)の後に、ウイルス不活化のために熱処理工程が実行される、請求項1または7に記載の方法。
- 熱処理は、
溶液のpHを6.6〜8.0の範囲内に調節する工程;および続けて
該溶液を55〜61℃の温度で30分〜4時間加熱する工程
を含む、請求項8に記載の方法。 - pHが6.6〜8.0の範囲内である溶液は、2.7M〜3.9Mの範囲内の濃度のGuHClを含む、請求項9に記載の方法。
- pHが6.6〜8.0の範囲内である溶液のpHは、7.0〜8.0の範囲内である、請求項9または10に記載の方法。
- pHが6.6〜8.0の範囲内である溶液は、
1)Apo A−I沈殿物を4.0〜4.6MのGuHClに懸濁する工程;ならびに
2)GuHCl濃度を2.7M〜3.9Mの範囲内に、およびpHを6.6〜8.0の範囲内に調節する工程
によって調製される、請求項9〜11のいずれか1項に記載の方法。 - 再構成HDL製剤を製造する方法であって、
請求項1〜12のいずれか1項に記載の方法によりApo A−Iを製造する工程;および
Apo A−1を脂質と組み合わせ;それにより再構成HDL製剤を製造する工程
を含む前記方法。
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CN105452291A (zh) | 2016-03-30 |
WO2015017888A8 (en) | 2015-10-01 |
CN109701004B (zh) | 2022-11-08 |
EP3030578A4 (en) | 2017-04-26 |
AU2014305646A1 (en) | 2016-02-18 |
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