人体近管上皮细胞的抗miR吸收主要是通过巨细胞
Emily K Glover1, Rolando Berlinguer-Palmini2, Emily R Thompson3
1Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle Upon Tyne, UK. emily.glover@newcastle.ac.uk.
Scientific reports
|August 28, 2025
概括
微RNA抑制剂 (antimiRs) 可以在没有转染剂的情况下在体外输入人类细胞. 马克罗皮诺细胞是靠近管上皮细胞吸收抗miR的主要途径.
科学领域:
- 生物医学
- 分子生物学
- 脏医学
背景情况:
- 微RNA抑制剂 (antimiRs) 对脏疾病,如缺血再输液损伤具有治疗潜力.
- 针对细胞的有效输送仍然是一个挑战.
- 之前的研究表明,在外置 perfusion 模型中,抗miRs 的内细胞吸收.
研究的目的:
- 在体外研究人类近壁管内皮细胞 (PTEC) 的抗miR吸收.
- 确定负责抗miR进入PTEC的特定内细胞机制.
- 确定是否需要转染试剂在体外向PTEC输送抗miR.
主要方法:
- 从捐赠中分离出原始人类PTEC并培养.
- 通过光显微镜和光信号的量化来评估AntimiR的吸收.
- 使用内细胞标志物和温度依赖的吸收试验证实了内细胞.
- 通过使用受体介导的内细胞酶 (美加林) 和巨细胞酶的抑制剂,研究了特定的内细胞路径.
主要成果:
- 在试验室中,PTEC显示了光标记的抗miR药物的显著吸收.
- 吸收呈现出囊泡状的模式, 这与内细胞形成一致.
- 抗miR的吸收取决于温度,并与内细胞标志物同时局部化.
- 抑制巨细胞形成显著降低了抗miR的吸收,而抑制巨素则没有影响.
结论:
- 在不需要转染试剂的情况下,可以有效地将抗miRs输送到人体初级PTEC中.
- 抗miR进入PTEC的主要内细胞通路是巨细胞.
- 这些发现支持治疗病的非病毒性抗miR输送策略的潜力.
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