JP2018531905A - チモシンベータ4を含む眼科用製剤の製造方法 - Google Patents
チモシンベータ4を含む眼科用製剤の製造方法 Download PDFInfo
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- JP2018531905A JP2018531905A JP2018511451A JP2018511451A JP2018531905A JP 2018531905 A JP2018531905 A JP 2018531905A JP 2018511451 A JP2018511451 A JP 2018511451A JP 2018511451 A JP2018511451 A JP 2018511451A JP 2018531905 A JP2018531905 A JP 2018531905A
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- thymosin
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Abstract
Description
本発明の製造方法は、不活性ガスの存在下でチモシンβ4を含む眼科用製剤を製造して、チモシンβ4と酸素との接触を遮断することによりチモシンβ4の酸化を防止し、その薬理活性を長期間維持する。したがって、本発明の製造方法により製造された眼科用製剤は、チモシンβ4の薬理活性を長期間安定した状態に維持することができる。
本発明は、チモシンβ4を含む眼科用製剤の製造方法であって、チモシンβ4を含む組成物を、不活性ガスの存在下で容器に充填し、該容器を密封する工程を含む方法を提供する。
以下、本発明をより明確に理解するために、以下の実施例によって本発明をさらに詳細に説明する。しかしながら、本発明の実施例は、異なる変形または変更を含むことができ、本発明の範囲は以下の実施例の範囲内に限定されると解釈されない。
工程1:チモシンβ4を含む眼科用製剤の製造
加圧可能なステンレス製攪拌槽に注射用滅菌水30gを入れ、5℃に冷却しながら、約120ml/分の速度で、溶液中に沈めたスパージャーを通して窒素ガスをバブリングして、溶液中に溶解した酸素を除去した。冷却した溶液に、塩化ナトリウム4.89g、塩化カルシウム573mg、塩化カルシウム水和物366.72mg、塩化マグネシウム6水和物229mg、酢酸ナトリウム水和物2.98g、およびクエン酸ナトリウム水和物1.30gを加え、温度を3〜7℃に保ちながら攪拌溶解した。得られた溶液に、チモシンβ4アセテート(Bachem Inc.、米国、配列番号:1)764mg(純度およびペプチド補正量)を加え、3℃〜7℃で攪拌して完全に溶解させた。各成分とチモシンβ4を溶解させながら、チモシンβ4が酸素と接触するのを妨げるために窒素を連続的に供給した。得られた溶液に水酸化ナトリウムおよび塩酸を加えてpHを7.0に調節し、次いで、注射用滅菌水82gを加え、チモシンβ4の濃度を1mg/mlに調節した。得られた混合物を、0.2μmのポリエーテルスルホン(PES)滅菌フィルター(製品番号:MCY4440EKVPH4、Pall Corporation)を用いて窒素加圧下で滅菌ろ過して、ろ過溶液を得た。
工程1で得られたろ過された滅菌溶液を0.27ml/バイアルにて低密度ポリエチレンバイアルに入れ、窒素ガスをバイアルに充填しながら密封した。次いで、バイアルを、窒素バックフラッシュ下でアルミパウチ中に密封して、眼科用製剤を製造した。製造した眼科用用品を、2℃〜8℃で保存した。
実施例1の工程1および2を不活性ガスを使用せずに大気下(O2の存在下)で行ったこと以外は、実施例1と同様にして眼科用製剤を製造した。
実施例1の工程1を不活性ガスを使用せずに大気下(O2の存在下)で行ったこと以外は、実施例1と同様にして眼科用製剤を製造した。
(1)純度分析
第1表および第2表の条件下で高速液体クロマトグラフィー(HPLC)Agilent 1200装置を使用して、上記実施例および比較例で製造した眼科用製剤の純度の変化を、製造直後から12ヶ月後まで分析し、HPLCによる結果を第3表に示す。
上記実施例および比較例で製造した眼科用製剤中の不純物の量を以下のようにして測定し、その結果を第3表に示す。
保存期間中の安定性を調べるために、上記実施例1および比較例1および2で製造された眼科用製剤を、5±3℃(冷蔵条件)および25℃、相対湿度(RH)40%の条件下で12ヶ月間保存した。そして、試験例(1)および(2)と同様の方法を用いて、眼科用製剤の純度および不純物(チモシンβ4スルホキシド)における変化を分析した。測定結果を第4表および第5表に示す。
Claims (11)
- チモシンβ4を含む眼科用製剤の製造方法であって、チモシンβ4を含む組成物を、不活性ガスの存在下で容器に充填し、密封する工程を含む方法。
- 不活性ガスが、窒素またはアルゴンである、請求項1に記載の方法。
- チモシンβ4を含む眼科用製剤中のチモシンβ4の量が、0.05% (w/v)〜0.5% (w/v)の範囲にある、請求項1に記載の方法。
- 容器が、ガラス容器、ポリプロピレン容器、および低密度ポリエチレン容器からなる群から選択される、請求項1に記載の方法。
- チモシンβ4を含む組成物が、不活性ガスの存在下で溶媒とチモシンβ4を混合することによって製造される、請求項1に記載の方法。
- チモシンβ4を含む組成物のpHが、6.8〜7.2の範囲にある、請求項1に記載の方法。
- 組成物のpHが、塩酸、酢酸およびリン酸からなる群から選択される酸を用いることによって調節される、請求項6に記載の方法。
- 組成物のpHが、水酸化ナトリウム、水酸化カリウムおよび炭酸水素ナトリウムからなる群から選択される塩基を用いることによって調節される、請求項6に記載の方法。
- チモシンβ4を含む組成物が、フィルターを用いるろ過の工程を通して得られる、請求項1に記載の方法。
- 組成物を含む密封容器を、不活性ガスの存在下、パウチに供給するステップをさらに含む、請求項1に記載の方法。
- 請求項1〜10に記載の方法のいずれか1つによって製造された眼科用製剤。
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