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Updated: Feb 7, 2026

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血管組織工学応用における抗血栓性および抗石灰化特性を有する生体模倣二層ヒドロゲルコーティング
Shisong Chen1, Qin Li1, Chao Ye1
1Department of Cardiovascular Surgery Laboratory, Changhai Hospital, Navy Medical University, Shanghai 200433, China.
Regenerative biomaterials
|February 6, 2026
まとめ
新規二層ヒドロゲルコーティングは、心血管組織工学用の脱細胞化細胞外マトリックス(dECM)スキャフォールドを強化します。この生体模倣コーティングは、耐久性を向上させ、血管移植片の性能を向上させるために石灰化と血栓症を防止します。
背景:
- 脱細胞化細胞外マトリックス(dECM)は心血管組織工学の有望視されていますが、耐久性の向上が必要です。
- 石灰化および抗血栓特性を有するdECMスキャフォールドの強化は、臨床的成功のために不可欠です。
研究 の 目的:
- 心血管応用における特性を向上させるために、脱細胞化浮袋(ASB)用の生体模倣二層ヒドロゲルコーティングを開発および評価すること。
- コーティングの生体適合性、血液適合性、抗石灰化、および抗血栓効果を *in vitro* および *in vivo* の両方で評価すること。
主な方法:
- 二層ヒドロゲルコーティングの作製:内側の内皮模倣(HCT)層と外側の親水性メタクリレート化シルクフィブロイン(SilMA)層。
- 細胞除去された浮袋(ASB)へのコーティングの適用、安定性を高めるための相互貫入ネットワークの作成。
- 包括的な *in vitro* (生体適合性、血液適合性、抗菌性、抗石灰化)および *in vivo* (皮下インプラテーション、血液循環モデル、ウサギシャントアッセイ、ラット頸動脈置換モデル)評価。
主要な成果:
- 二層ヒドロゲルコーティング(H/S)は、優れた生体適合性、血液適合性、抗菌活性、および抗石灰化特性を示しました。
- H/Sコーティングは、血液循環およびウサギシャントモデルにおいて優れた抗凝固特性を示しました。
- ラット頸動脈置換モデルでは、H/Sコーティングは内皮化、血管リモデリングを促進し、石灰化と血栓症を防止し、ASBの耐久性を大幅に向上させました。
結論:
- 開発された内皮模倣親水性二層ヒドロゲルコーティングは、dECMスキャフォールドの生体安定性、血液適合性、および抗血栓特性を効果的に強化します。
- この表面修飾戦略は、心血管応用における組織工学スキャフォールドの性能と耐久性を向上させる大きな可能性を秘めています。
- H/Sコーティングは、より堅牢で機能的な血管移植片を作成するための有望な進歩を表しています。
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