从脂肪介质干细胞中获得的条件介质,用 pituitary adenylate cyclase-activating polypeptide (PACAP) 刺激,减轻RINm5F胰腺β细胞功能障碍
Aymé Oliva-Cárdenas1, Alejandro Ávalos-Rodríguez2, Guadalupe Díaz-Rosas3
1Doctorado en Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana, Ciudad de México, Mexico.
Molecular biology reports
|July 9, 2025
概括
来自PACAP预先调节的介质介质介质介质细胞 (MSCs) 保护胰腺β细胞免受氧化损伤. 这种MSCs衍生的介质增强了细胞活力,减少了细胞亡,并恢复了胰岛素分泌,提供了潜在的治疗策略.
科学领域:
- 细胞生物学 细胞生物学
- 再生医学是一种再生医学.
- 内分泌学 在内分泌学.
背景情况:
- 介酶体 stromal 细胞 (MSCs) 通过分泌的生物活性分子具有再生潜力.
- 下垂体腺酸环酶激活聚 (PACAP) 影响细胞活力,细胞亡和炎症.
- 对于PACAP在调节MSCs分泌基因组中的作用,其治疗应用尚未得到充分研究.
研究的目的:
- 为了研究PACAP预先条件的MSCs衍生条件介质 (CM) 对胰腺β细胞的恢复的影响.
- 评估RINm5F细胞中抗氧化损伤的保护机制.
主要方法:
- 从Sprague-Dawley大鼠脂肪组织中分离出MSC,并用PACAP进行预先条件.
- MTT测定确定了MSC活力和线粒体代谢的最佳PACAP度.
- RINm5F细胞受到氧化应激 (高葡萄糖和链条毒素),并评估了PACAP-MSCs CM的保护作用.
主要成果:
- PACAP显著增强了MSCs的线粒体代谢.
- PACAP-MSCs CM治疗增加了RINm5F细胞活力,并恢复了线粒体膜潜力.
- CM降低了活性氧物种 (ROS) 和亡,增强了谷氨过氧化酶 (GPx) 活性,并在受损的β细胞中改善了胰岛素分泌.
结论:
- 来自PACAP预先条件的MSCs的条件介质有效地逆转胰腺β细胞的氧化损伤和亡.
- 保护作用很可能通过刺激抗氧化剂反应和潜在的其他补偿机制来调节.
- 这表明,对于涉及胰腺β细胞功能障碍的疾病来说,这是一个有前途的治疗方法.
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