一个Co-MOF封装的微针贴片激活低氧诱导因子-1,以预先保护移植的片免受远端缺血性亡
Cheng Lu1, Miao Chen1, Yuanyuan Zhao1
1Department of Hand and Podiatric Surgery, Orthopedics Center, The First Hospital of Jilin University, Jilin University, Changchun 130031, PR China.
Acta biomaterialia
|June 13, 2024
概括
这项研究开发了一种金属有机框架微针贴片 (Co-MOF@MN) 用于移植. Co-MOF@MN贴片通过提供离子来激活缺氧诱导因子-1 (HIF-1),减少损伤并改善血液供应,从而提高了片的存活率.
科学领域:
- 生物材料科学 生物材料科学
- 再生医学是一种再生医学.
- 纳米技术纳米技术
背景情况:
- 片移植面临着缺血性亡的挑战,需要改进预治疗策略.
- 化 (CoCl2) 通过缺氧诱导因子-1 (HIF-1) 增强细胞对缺血/缺氧的耐受性,但有毒性问题.
- 开发安全有效的输送方法对于临床应用至关重要.
研究的目的:
- 开发一种基于的新型金属有机框架,封装在微针贴片中 (Co-MOF@MN),用于持续通过皮肤输送CO2+.
- 评估Co-MOF@MN作为对片移植进行最少侵入性预治疗的有效性,以减轻缺血-再输血损伤.
- 调查Co-MOF@MN在激活HIF-1通路和改善片生存的潜在机制.
主要方法:
- 使用甲醇基聚合物制造微针 (MN) 补丁,用于通过皮肤输送Co-MOF纳米颗粒.
- 使用氧气-葡萄糖剥夺/恢复 (OGD/R) 细胞模型进行体外评估,以评估HIF-1α通路激活和保护作用.
- 在体内评估使用大鼠背穿孔器片模型来评估片存活率,血液供应和氧化损伤.
主要成果:
- Co-MOF@MN贴片证明了有效的CO2+通过皮肤传递,具有水触发释放和最小的侵入性.
- 同MOF@MN治疗显著降低了反氧化损伤,并改善了叶片关键区域的血液供应.
- 与大鼠模型中的对照组相比,Co-MOF@MN治疗组的叶生存率大幅增加.
结论:
- Co-MOF@MN系统提供了一种有前途的战略,可以安全有效地通过皮肤传递离子,克服传统化的局限性.
- 这种方法激活了HIF-1α通路,提供了对缺血-再输液损伤的显著预防,并提高了移植时的片存活率.
- MOF纳米颗粒和微针技术的组合满足了临床要求,在片移植中进行最少侵入性和均的治疗.
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