酸作为线粒体功能的关键调节剂和人类淋巴细胞内皮细胞的屏障完整性
Maria Novella Nicese1,2, Roel Bijkerk1,2, Anton Jan Van Zonneveld1,2
1Department of Internal Medicine, Division of Nephrology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands.
International journal of molecular sciences
|September 9, 2023
概括
丁酸盐是一种肠道微生物产品,通过增强屏障完整性和线粒体功能来保护脏内皮细胞. 这一发现为管理慢性病 (CKD) 和心血管健康提供了新的见解.
科学领域:
- 心血管和脏的恒常性.
- 肠道微生物群和新陈代谢
- 内皮细胞生物学 内皮细胞生物学
背景情况:
- 肠道微生物群的组成在慢性病 (CKD) 中发生变化.
- 在CKD患者中观察到肠道细菌减少短链脂肪酸 (SCFA) 的产生.
- 酸和酸等SCFA具有已知的预防心血管疾病和CKD的保护作用,但它们的机制尚不清楚.
研究的目的:
- 调查丁酸盐和酸盐对人类球微血管内皮细胞 (hgMVECs) 的作用.
- 探索这些SCFA对内皮细胞增殖,线粒体功能和屏障完整性的影响.
主要方法:
- 培养hgMVECs和暴露于丁酸盐和酸盐.
- 评估细胞增殖,线粒体质量和新陈代谢.
- 评估单层完整性,包括VE-cadherin和Claudin-5的表达.
- 测量氧气消耗对脂聚糖 (LPS) 的反应.
主要成果:
- 乙酸对hgMVECs没有显著影响.
- 丁酸盐降低了hgMVEC的扩散.
- 丁酸盐通过上调VE-cadherin和Claudin-5表达来增强内皮屏障的完整性.
- 丁酸盐促进了线粒体生物发生,并减少了LPS诱导的氧气消耗,这表明它对LPS毒性有保护作用.
结论:
- 丁酸盐在维持内皮完整性和代谢平衡中起着至关重要的作用.
- 这些发现凸显了丁酸盐作为CKD和相关心血管并发症的治疗剂的潜力.
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