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富含miR-145的BMSC衍生的外体通过TGFBR2抑制在老老鼠中改善神经性勃起功能障碍

Yude Hong^1,2, Zejia Feng¹, Yunlong Ge³

¹Department of Urology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China.

Regenerative therapy

|May 1, 2025

概括

用miR-145 (Exo-145) 设计的外体细胞通过减少细胞死亡和纤维化,有效地治疗老老鼠的神经性勃起功能障碍. 这为老年患者提供了一个有前途的无细胞疗法.

科学领域:

再生医学是一种再生医学.
细胞生物学细胞生物学
泌尿器科泌尿器科泌尿器科泌尿器科

背景情况:

神经性勃起功能障碍 (ED) 是老年男性前列腺切除术后的一个常见并发症.
它源于洞体光滑肌细胞 (CCSMC) 亡和纤维化.
目前的治疗方法有局限性,需要新的治疗策略.

研究的目的:

为了比较miR-145修饰的外体 (Exo-145) 与未修饰的外体 (Exo) 在老老鼠中具有双边洞穴神经损伤 (BCNI) 的疗效.
阐明EXO-145在治疗神经性勃起障碍时的潜在机制.

主要方法:

患有BCNI的老老鼠接受了Sham,BCNI,Exo或Exo-145的治疗.
勃起功能通过ICP/MAP比率进行评估.
使用TUNEL和马森三色染色方法量化了亡和纤维化.
在体外研究中,CCSMCs中使用了H2O2诱导的氧化应激,通过流细胞计和西欧斑点分析.

主要成果:

与Exo.145相比,Exo-145在BCNI大鼠中显著改善了勃起功能 (ICP/MAP).
埃克索-145显著降低了CCSMC细胞亡和洞穴性纤维化.
在体外,Exo-145通过调节与亡相关的蛋白质 (Bax,Bcl-2,Cleaved Caspase-3) 来保护CCSMCs免受氧化应激.
TGFBR2被确定为miR-145.5的直接目标.

结论:

对于老年的神经性ED,EXO-145表现出比EXO更优越的治疗效果.
该机制涉及向TGFBR2以减轻细胞亡和纤维化.
在老年患者中,EXO-145代表了神经性ED的潜在无细胞疗法.

关键词:

洞穴神经受伤的情况勃起功能障碍是因为勃起功能障碍.外基因组是外基因组的组成部分.这是TGFBR2的TGFBR2.在 miR-14545 里面.

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