JP6533626B2 - 核酸及びキトサンを含む温度感応性ハイドロゲル組成物 - Google Patents
核酸及びキトサンを含む温度感応性ハイドロゲル組成物 Download PDFInfo
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- JP6533626B2 JP6533626B2 JP2018536253A JP2018536253A JP6533626B2 JP 6533626 B2 JP6533626 B2 JP 6533626B2 JP 2018536253 A JP2018536253 A JP 2018536253A JP 2018536253 A JP2018536253 A JP 2018536253A JP 6533626 B2 JP6533626 B2 JP 6533626B2
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- chitosan
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- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
むしろ、ここで紹介される内容が徹底し、完全になり、当業者に本発明の思想を十分に伝達するために提供するものである。
<実施例1.核酸−キトサンハイドロゲルの製造>
<比較例1、比較対象の核酸−キトサンハイドロゲルの製造>
Claims (13)
- 核酸及びキトサンを含み、
前記核酸及びキトサンの重量比が20:1〜10000:1である、温度感応性ハイドロゲル組成物。 - 前記核酸及びキトサンの重量比が50:1〜2000:1である、請求項1に記載の温度感応性ハイドロゲル組成物。
- 前記核酸及びキトサンの重量比が100:1〜1000:1である、請求項2に記載の温度感応性ハイドロゲル組成物。
- 前記核酸の含有量が組成物の総重量を基準として0.01重量%〜3重量%であることを特徴とする、請求項1に記載の温度感応性ハイドロゲル組成物。
- 前記核酸は、デオキシリボ核酸(deoxyribonucleic acid、DNA)、
リボ核酸(ribonucleic acid、RNA)またはこれらの混合物であることを特徴とする、請求項4に記載の温度感応性ハイドロゲル組成物。 - 前記キトサンの含有量が組成物の総重量を基準として、1×10−6重量%〜0.15重量%であることを特徴とする、請求項1に記載の温度感応性ハイドロゲル組成物。
- 前記キトサンは、分子量が3kDa〜1,000kDaであることを特徴とする、請求項6に記載の温度感応性ハイドロゲル組成物。
- 前記温度感応性ハイドロゲル組成物は、高分子物質を追加成分として含むことを特徴とする、請求項1に記載の温度感応性ハイドロゲル組成物。
- 前記高分子物質は、ヒアルロン酸(hyaluronic acid)、ポリガンマグルタミン酸(poly−γ−glutamic acid)、セルロース(cellulose)、ポリアクリル酸(polyacrylic acid)、ポリアミノ酸(polyamino acid)、アルジネート(alginate)、これらの誘導体及びこれらの組合せからなる群から選択される1種以上であることを特徴とする、請求項8に記載の温度感応性ハイドロゲル組成物。
- 請求項1〜9のいずれか1項に記載の温度感応性ハイドロゲル組成物の製造方法であって、
1)核酸の貯蔵溶液を製造するステップ;
2)キトサン貯蔵溶液を製造するステップ;
3)前記ステップ1)の核酸貯蔵溶液及び前記ステップ2)のキトサン貯蔵溶液を核酸及びキトサンの重量比が20:1〜10000:1になるように混合して攪拌するステップ;と
4)前記ステップ3)の核酸−キトサン混合液を攪拌しながら常温に下げるステップ;と
を含むことを特徴とする、温度感応性ハイドロゲル組成物の製造方法。 - 前記製造方法は、
1)核酸を緩衝溶液(buffer)に入れ、60℃〜70℃で攪拌しながら1時間〜2時間溶解させて核酸貯蔵溶液を製造するステップと、
2)キトサンを酸性緩衝溶液に溶解させてキトサン貯蔵溶液を製造するステップと、
3)前記ステップ1)の核酸貯蔵溶液及び前記ステップ2)のキトサン貯蔵溶液を核酸及びキトサンの重量比が20:1〜10000:1になるように混合して55℃〜65℃で1時間〜2時間攪拌するステップと、
4)前記ステップ3)の核酸−キトサン混合液を攪拌しながら常温に下げるステップと、
を含むことを特徴とする、請求項10に記載の温度感応性ハイドロゲル組成物の製造方法。 - 前記温度感応性ハイドロゲル組成物は、浸透圧が100mOsm〜500mOsmであることを特徴とする、請求項10に記載の温度感応性ハイドロゲル組成物の製造方法。
- 前記温度感応性ハイドロゲル組成物は、pHが6〜8であることを特徴とする、請求項10に記載の温度感応性ハイドロゲル組成物の製造方法。
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