移植的ENSCs与肠滑肌形成功能连接,并在nNOS缺乏的小鼠中恢复结肠运动性
Ryo Hotta1, Ahmed Rahman1, Sukhada Bhave1
1Department of Pediatric Surgery, Massachusetts General Hospital, Boston, MA, USA.
Stem cell research & therapy
|September 4, 2023
概括
使用肠道神经干细胞 (ENSCs) 进行基于细胞的疗法在治疗结肠不运动方面表现有前途. 多次注射ENSCs改善了小鼠的肠道功能和神经肌肉连接,这表明了优化的临床试验设计.
科学领域:
- 胃肠病学 胃肠病学
- 再生医学是一种再生医学.
- 神经科学是一个神经科学.
背景情况:
- 肠道神经病变由于肠道神经系统异常导致显著的发病率和高医疗费用.
- 目前用于肠道神经病变的治疗方法不令人满意.
- 基于细胞的疗法提供了一种新的策略,通过替换异常的肠道神经元来恢复肠道功能.
研究的目的:
- 研究肠道神经干细胞 (ENSC) 移植在结肠不运动的小鼠模型中的疗效.
- 评估ENSC移植后结肠的功能恢复.
- 为了确定单个和多个注射点对治疗结果的影响.
主要方法:
- 肠神经干细胞 (ENSC) 被分离出来,形成神经圈 (NS).
- 通过单次或多次注射,NS被移植到nNOS-/-小鼠的结肠介质中 (结肠不运动的模型).
- 用电肌图 (EMG),电场刺激 (EFS),光遗传学和结肠直肠运动测量来评估功能结果.
主要成果:
- 移植的ENSCs在接收者结肠内分化为基神经元.
- 与单次注射相比,多次ENSC注射导致了更大的覆盖面积和显著改善的结肠功能.
- 改善包括增加结肠肌肉活动 (EMG),更快的直肠珠驱逐和增加便输出.
- 光遗传学和EFS证实恢复了神经肌肉通信和平滑肌肉放松.
结论:
- 在小鼠模型中,移植的ENSC可以建立功能神经肌肉连接,并改善结肠运动缺陷.
- 多个输送点可增强治疗反应,为优化临床试验设计提供基础.
- 这项研究支持基于ENSC的细胞疗法在治疗肠道神经病变和恢复肠道功能方面的潜力.
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