在介酶干细胞衍生的细胞外囊泡行为行为中,miR-21的影响
Miriam Morente-López1, Rocio Mato-Basalo1, Sergio Lucio-Gallego1
1Grupo de Terapia Celular y Medicina Regenerativa, Dpto. de Fisioterapia, Medicina y Ciencias Biomédicas. Facultad de Ciencias de la Salud, Universidade da Coruña, INIBIC-CHUAC, CICA, 15006, A Coruña, Spain.
Stem cell research & therapy
|December 22, 2023
概括
像miR-21这样的微RNA调节细胞衰老和炎症. 在中酶干细胞细胞外囊中抑制miR-21可减少与衰老相关的分泌表型 (SASP) 和炎症标志物.
科学领域:
- 老年学和再生医学的研究.
- 细胞生物学和分子机制
- 生物技术和治疗学
背景情况:
- 细胞衰老,一种不可逆转的增长停止状态,与衰老和慢性炎症有关.
- 衰老细胞释放的与衰老相关的分泌表型 (SASP) 驱动局部和全身炎症.
- 微RNAs (miRNAs) 是细胞过程的关键调节者,包括衰老和炎症.
研究的目的:
- 研究miR-21在调节衰老相关分泌表型 (SASP) 和炎症形成中的作用.
- 为了确定中细胞干细胞 (MSC) 衍生的细胞外囊泡 (EVs) 中miR-21抑制对SASP和炎症的影响.
- 为了确定miR-21抑制后EVs中的特定蛋白质载荷变化及其功能后果.
主要方法:
- 人类带 stromal mesenchymal干细胞 (MSCs) 经过基因改造,使用lentivirus转导抑制miR-21-5p.
- 炮弹蛋白质组分析是在从修改的MSCs中衍生出来的细胞外囊泡 (EV) 上进行的,以分析蛋白质载荷.
- 修改EVs对SASP和受体细胞中的炎症标记物的近影响得到了评估.
主要成果:
- 鉴定出Syndecan-1 (SDC1) 是由miR-21抑制的MSCs (MSC-miR21−-EVs) 在EV中显著下调的蛋白质,并且SDC1与炎症和EV产生有关.
- MSC-miR21−-EVs在受体细胞中显示出对SASP和炎症标记物的统计学上显著的抑制作用.
- 相反,接受细胞治疗的EVs从miR-21过度表达MSCs (MSC-miR-21+-EVs) 显示了SASP和炎症标志物的显著增加.
结论:
- miR-21在炎症和SASP调节过程中起着至关重要的作用.
- 在miR-21对SASP和通过EVs的炎症观察到的影响中,SDC1是关键的调解者.
- 在MSC衍生的EV中准miR-21为与年龄相关的炎症性疾病提供了潜在的治疗策略.
关键词:
细胞外囊泡 (EV) 是一种细胞外囊泡.燃烧起来的 燃烧起来的介质细胞干细胞 (MSC)老化相关的分泌表型 (SASP)合成甘-1 (SDC1) 是一种合成甘.在 miR-21-5p (miR-21) 中.更多相关视频
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