JP6176924B2 - 医薬製剤 - Google Patents
医薬製剤 Download PDFInfo
- Publication number
- JP6176924B2 JP6176924B2 JP2012532657A JP2012532657A JP6176924B2 JP 6176924 B2 JP6176924 B2 JP 6176924B2 JP 2012532657 A JP2012532657 A JP 2012532657A JP 2012532657 A JP2012532657 A JP 2012532657A JP 6176924 B2 JP6176924 B2 JP 6176924B2
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- Prior art keywords
- hcg
- mol
- sialylation
- rhcg
- sialic acid
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
- A61K38/16—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
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Description
以下に、本発明について以下の実施例および添付の図面を用いてより詳細に記載する。
ヒトhCG
FiddesおよびGoodman (1979)に従い、hCGαポリペプチド遺伝子のコード領域を使用した。配列はAH007338として登録されており、構築の時点で、このタンパク質配列には他の変異体は存在しなかった。本明細書ではこの配列をSEQ ID 1と称する。
α2,3-シアリルトランスフェラーゼ: KitagawaおよびPaulson (1994)に従い、βガラクトシドα2,3-シアリルトランスフェラーゼ4(α2,3-シアリルトランスフェラーゼ、ST3GAL4)遺伝子のコード領域を使用した。この配列はL23767として登録されており、本明細書ではSEQ ID 3と称する。
hCGαポリペプチドのコード配列(AH007338, SEQ ID 1)およびhCGβポリペプチドのコード配列(NP_000728, SEQ ID 2)をPCRで増幅した(プライマーはそれぞれ、CGa-fwおよびCGa-rev、CGb-fwおよびCGb-revの組み合わせで使用)。
CGa-fw 5'-CCAGGATCCGCCACCATGGATTACTACAGAAAAATATGC-3'
CGa-rev 5'-GGATGGCTAGCTTAAGATTTGTGATAATAAC-3'
CGb-fw 5'-CCAGGCGCGCCACCATGGAGATGTTCCAGGGGCTGC -3'
CGb-rev 5'- CCGGGTTAACTTATTGTGGGAGGATCGGGG-3'
βガラクトシドα-2,3-シアリルトランスフェラーゼ4のコード配列(ST3、L23767、SEQ ID 3)のPCR増幅を、プライマー、2,3STfwおよび2,3STrevを使用して行った。
2,3STfw 5'-CCAGGATCCGCCACCATGTGTCCTGCAGGCTGGAAGC-3'
2,3STrev 5'-TTTTTTTCTTAAGTCAGAAGGACGTGAGGTTCTTG-3'
βガラクトサミドα-2,6-シアリルトランスフェラーゼ1のコード配列(ST6、NM_003032、SEQ ID 4)のPCR増幅を、プライマー、2,6STfwおよび2,6STrevを使用して行った。
2,6STfw 5'-CCAGGATCCGCCACCATGATTCACACCAACCTGAAG-3'
2,6STrev 5'-TTTTTTTCTTAAGTTAGCAGTGAATGGTCCGG-3'
クローンのトランスフェクション、単離、およびスクリーニング
hCGを生成するPer.C6クローンを作製するために、1つのプラスミドからhCGの両ポリペプチド鎖を発現させた(実施例1参照)。
高度にシアリル化されたhCGを生成するPer.C6クローンを作製するために、既にhCGの両ポリペプチド鎖を発現することが確認されているPer.C6細胞(実施例4参照)において、別のプラスミド(実施例2参照)からα2,3-シアリルトランスフェラーゼを発現させた。実施例4に記載するPER.C6(登録商標)細胞から作製したクローンについて、その特性(生産性、良好な増殖プロファイル、機能性タンパク質の生成、および生成されるシアリル化含有hCG)に基づく選択を行った。
上記のように作製したα、βヘテロダイマー(実施例4)はシアリル化のレベルが低く、非常に塩基性の高いIEFプロファイルを示した。上記(実施例5a)のように、Per.C6細胞におけるhCGおよびα2,3-シアリルトランスフェラーゼの共発現により、hCGのみを発現する細胞に比較して、高レベルのシアリル化hCGが得られる。
電気泳動は、電場による溶媒中での荷電分子の移動と定義される。電場による生体分子の移動度は電場の強度、分子の正味荷電、分子のサイズおよび形状、分子が移動する溶媒のイオン強度および特性に依存する。
レクチンに基づくグリカン識別法を用いて、複合糖質の分析を行った。この方法によれば、ニトロセルロースに結合した糖タンパク質および複合糖質を特性決定することができる。レクチンは特定の部分(例えばα2,3結合型シアル酸)を選択的に認識する。適用したレクチンはステロイド・ハプテンであるジゴキシゲニンとコンジュゲートし、これによって結合したレクチンの免疫学的検出が可能となる。
シアル酸はタンパク質に結合した炭水化物であってモノサッカライドと見なされ、他のモノサッカライド(例えばガラクトース、マンノース、グルコサミン、ガラクトサミン、およびフコース)と化合して存在する。本発明の精製rhCG上の総シアル酸を、Stantonらの方法に基づく方法を用いて測定した(J. Biochem. Biophys. Methods. 30 (1995), 37 - 48)。
α2,3-シアリルトランスフェラーゼで改変したPer.C6組換えhCG(例えば実施例5a、実施例5b)の総シアル酸含量を測定したところ、(タンパク質のモル数に対するシアル酸のモル数の比で)15 mol/mol以上、例えば18 mol/mol以上、例えば19.1 mol/molであった。これはOvitrelle(総シアル酸含量 17.6 mol/mol)に匹敵する。
α2,3-シアリルトランスフェラーゼで改変したPer.C6組換えhCG(080019-19)(上記実施例5bの方法で調製したもの)の総シアル酸含量を測定したところ、(タンパク質のモル数に対するシアル酸のモル数の比で)20 mol/molであった。この場合も、これはOvitrelle(総シアル酸含量 17.6 mol/mol)を凌ぐものである。この事例(080019-19)について試験を行い、α2,3およびα2,6シアル酸の相対量を定量した(実施例8C)。
精製rhCG((080019-19)の例および実施例5で調製した他の2つの例)上のα2,3およびα2,6シアル酸の相対量(%)を、既知の方法、すなわち順相(NP-)HPLCを用いて測定した。
精製rhCG(実施例8Cで使用した3つのサンプル)から抽出したグリカン上のモノ-、ジ-、トリ-、およびテトラ-シアリル化構造の相対量(%)を既知の方法で測定した。
α2,3-シアリルトランスフェラーゼを用いて操作したPer.C6組換えhCGサンプル(例えば実施例5a、5b)の代謝クリアランス速度(MCR)を測定するために、意識のあるメス・ラット(クローン毎に3検体)の尾静脈にrhCGをボーラス注射し(サンプルのELISA定量(DRG社、EIA 1288)に基づき、1-10 μg/ラット)、時間=0とした。試験サンプル注射の1、2、4、8、12、24、および32時間後に、尾の先端部から血液サンプル(400μL)を採取した。遠心分離によって血清を回収し、ELISA(DRG社、EIA 1288)によってhCG含量のアッセイを行った。α2,3-シアリルトランスフェラーゼで操作したPer.C6 hCGサンプルのMCRは、半減期が標準物質と同程度であることを示した(図5)。図6は、α2,3-シアリルトランスフェラーゼで操作した他のhCGサンプルの半減期が標準物質と比較して向上されることを示している(図6)。
hCGバイオアッセイを実施し、hCG特異的活性を測定した。活性の測定はUSP(USP Monographs:Chorionic Gonadotropin, USPC Official 8/1/09-11/30/09)に従い、Ovitrelleを標準物質として用いて行った。Ovitrelleの生体活性は26,000 IU/mgである(Curr Med Res Opin. 2005 Dec; 21(12): 1969 - 76)。許容限界(acceptance limit)は>21,000 IU hCG/mgである。α2,3-シアリルトランスフェラーゼで操作したヒト細胞系由来組換えhCGサンプル(シアル酸含量 19.1 mol/mol、実施例8参照)の生体活性は27,477 IU hCG/mgであった。
無血清培地中で懸濁培養したPER.C6細胞において組換えhCGを生成させる方法を開発した。方法は以下に記載するが、いくつかのhCG生成PER.C6細胞系に適用される。
Andersen CY, Westergaard LG, and van Wely M. (2004). FSH isoform composition of commercial gonadotrophin preparations: a neglected aspect? Reprod Biomed Online. 9(2), 231-236.
Bassett RM, and Driebergen R. (2005). Continued improvements in the quality and consistency of follitropin alfa, recombinant human FSH. Reprod Biomed Online. 10(2), 169-177.
D'Antonio M., Borrelli F. , Datola A., Bucci R. , Mascia M. , Polletta P., Piscitelli D., and Papoian R. (1999) Biological characterization of recombinant human follicle stimulating hormone isoforms. Human Reproduction 14, 1160-1167
Fiddes, J. C. and Goodman, H. M. (1979) Isolation, cloning and sequence analysis of the cDNA for the alpha-subunit of human chorionic gonadotropin. Nature, 281, 351-356.
Fiddes, J. C. and Goodman, H. M. (1980) The cDNA for the beta-subunit of human chorionic gonadotropin suggests evolution of a gene by readthrough into the 3'-untranslated region. Nature, 286, 684-387.
Kagawa Y, Takasaki S, Utsumi J, Hosoi K, Shimizu H, Kochibe N, and Kobata A. (1988). Comparative study of the asparagine-linked sugar chains of natural human interferon-beta 1 and recombinant human interferon-beta 1 produced by three different mammalian cells. J Biol Chem. 263(33), 17508-17515.
Lowry OH, Rosebrough NJ, Farr AL, Randall RJ. (1951) Protein measurement with the Folin phenol reagent. J Biol Chem. 193(1), 265-75.
Lowry, PJ, McLean, C, Jones RL and Satgunasingam N. (1976) Purification of anterior pituitary and hypothalamic hormones Clin Pathol Suppl (Assoc Clin Pathol). 7, 16−21.
Royle L, Radcliffe CM, Dwek RA and Rudd PM (2006) Methods in Molecular Biology, ed I Brockhausen-Schutzbach (Humana Press), 347: Glycobiology protocols, 125-144.
Steelman SL, and Pohley FM. (1953) Assay of the follicle stimulating hormone based on the augmentation with human chorionic gonadotropin. Endocrinology. 53(6), 604-616.
Svensson EC, Soreghan B, and Paulson JC. (1990) Organization of the beta-galactoside alpha 2,6-sialyltransferase gene. Evidence for the transcriptional regulation of terminal glycosylation. J Biol Chem. 265(34):20863-20868.
Takeuchi M, Takasaki S, Miyazaki H, Kato T, Hoshi S, Kochibe N, and Kobata A (1988). Comparative study of the asparagine-linked sugar chains of human erythropoietins purified from urine and the culture medium of recombinant Chinese hamster ovary cells. J Biol Chem. 263(8), 3657-3663.
Ulloa-Aguirre A, Midgley AR Jr, Beitins IZ, and Padmanabhan V. (1995). Follicle-stimulating isohormones: characterization and physiological relevance. Endocr Rev.16(6), 765-787.
Ulloa-Aguirre A, Timossi C, Barrios-de-Tomasi J, Maldonado A, and Nayudu P. (2003). Impact of carbohydrate heterogeneity in function of follicle-stimulating hormone: studies derived from in vitro and in vivo models. Biol Reprod. 69(2), 379-389.
Claims (14)
- α2,3−およびα2,6−シアリル化を含有する組換えhCG(rhCG)を含んでなる医薬組成物であって、組換えhCGが、モノ(1S)、ジ(2S)、トリ(3S)、およびテトラ(4S)シアリル化構造を含有する、医薬組成物。
- 全シアル酸の10%〜90%がα2,3−シアリル化である、請求項1に記載の医薬組成物。
- 組換えhCGが、15 mol/molまたはそれ以上であるシアル酸含量(タンパク質のモル数に対するシアル酸のモル数の比で)を有する、請求項1または2記載の医薬組成物。
- 組換えhCGが、15 mol/molから25 mol/molのシアル酸含量を有する、請求項1−3のいずれかに記載の医薬組成物。
- 組換えhCGが、総シアリル化の10%もしくはそれ以上のα2,3−シアリル化を有し、および/または、総シアリル化の50%もしくはそれ未満のα2,6−シアリル化を有する、請求項1−4のいずれかに記載される医薬組成物。
- 組換えhCGが、総シアリル化の45%から80%のα2,3−シアリル化を有する、請求項1−5のいずれかに記載される医薬組成物。
- 組換えhCGが、総シアリル化の20%から55%のα2,6−シアリル化を有する、請求項1−4のいずれかに記載される医薬組成物。
- 組換えhCGが、α2,8−シアリル化を更に含有する、請求項1−7のいずれかに記載される医薬組成物。
- 組換えhCGが、6重量%またはそれ以上のシアル酸含量を有する、請求項1−8のいずれかに記載される医薬組成物。
- 請求項1−9のいずれかに記載される医薬組成物の製造方法であって、組換えhCGが、ヒト細胞系で生成または発現させることを含む、製造方法。
- 細胞系がα2,3−シアリルトランスフェラーゼをコードする遺伝子を用いて改変したものである、請求項10記載の製造方法。
- 組換えhCGが、内因性シアリルトランスフェラーゼ活性によって生成されたα2,6結合型シアル酸(α2,6−シアリル化)を含有する、請求項10または11に記載される製造方法。
- FSHおよび/またはLHを更に含有した、請求項1−9のいずれかに記載の医薬組成物。
- 組換えhCGが、1S:2S:3S:4S=0.2−1:35−40:2.5−7:0.5−1の比率であるシアリル化構造の相対量を有する、請求項1−9のいずれかに記載の医薬組成物。
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WO2013093760A2 (en) * | 2011-12-19 | 2013-06-27 | Grifols, S.A. | Compositions, methods, and kits for preparing sialylated recombinant proteins |
CN108646019B (zh) | 2012-12-10 | 2021-06-25 | 生化学工业株式会社 | 新重组因子c、其制造方法、及内毒素的测定法 |
JP2018500934A (ja) * | 2014-12-22 | 2018-01-18 | エフ.ホフマン−ラ ロシュ アーゲーF. Hoffmann−La Roche Aktiengesellschaft | Cmp依存性シアリダーゼ活性 |
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WO2016207353A1 (en) | 2015-06-26 | 2016-12-29 | Ferring B.V. | Methods of purification and/or viral inactivation |
JP2021522268A (ja) * | 2018-04-30 | 2021-08-30 | フェリング ベスローテン フェンノートシャップ | 制御された卵巣刺激のための組成物 |
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JP2018076296A (ja) * | 2009-10-05 | 2018-05-17 | フェリング ベスローテン フェンノートシャップ | 医薬製剤 |
JP2020000246A (ja) * | 2009-10-05 | 2020-01-09 | フェリング ベスローテン フェンノートシャップ | 医薬製剤 |
JP2021176867A (ja) * | 2009-10-05 | 2021-11-11 | フェリング ベスローテン フェンノートシャップ | 医薬製剤 |
JP7196244B2 (ja) | 2009-10-05 | 2022-12-26 | フェリング ベスローテン フェンノートシャップ | 医薬製剤 |
JP7292153B2 (ja) | 2009-10-05 | 2023-06-16 | フェリング ベスローテン フェンノートシャップ | 医薬製剤 |
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