通过向SDF1来调节神经细胞-码细胞相互作用的乙醇诱导的干扰,外体转运的miR-126通过向SDF1来调节
概括
乙醇通过破坏神经细胞 (NCC) 和斑点细胞 (PC) 之间的相互作用来破坏胎儿发育. 从暴露于乙醇的NCC中携带miR-126的外体抑制PC中的SDF1,导致胎儿酒精谱系障碍 (FASD) 的面缺陷.
科学领域:
- 发展生物学 发展生物学
- 细胞生物学 细胞生物学
- 遗传学 是一个遗传学.
背景情况:
- 头骨神经细胞 (NCC) 和脑上支柱状细胞 (PC) 对于头骨面部发育至关重要.
- 乙醇暴露会破坏NCC和PC功能,导致胎儿酒精谱系障碍 (FASD).
- 乙醇破坏NCC-PC相互作用的确切机制尚不清楚.
研究的目的:
- 在乙醇暴露下,研究人类NCCs (hNCCs) 和人类PCs (hPCs) 之间的相互作用.
- 阐明外体和microRNAs在乙醇诱导的面发育缺陷中的作用.
- 在NCC-PC通信中识别受到乙醇影响的分子通路.
主要方法:
- 建立了人类NCC-hPC共同培养系统,并利用斑马鱼胚胎进行体内研究.
- 分析了乙醇和从暴露于乙醇的细胞 (ExoEtOH) 中衍生出来的外体对细胞迁移和相互作用的影响.
- 研究了SDF1,miR-126和外体细胞介导细胞间通信的作用.
主要成果:
- 乙醇暴露在体外和斑马鱼胚胎中破坏了协调的hNCC-hPC相互作用.
- 暴露于乙醇的hNCCs (ExoEtOH) 的外体模拟了乙醇的破坏性作用.
- ExoEtOH将miR-126传递给hPCs,抑制SDF1表达并导致发育异常,这些异常通过SDF1过度表达或miR-126抑制得到挽救.
结论:
- 乙醇通过改变NCC和PC之间的外体细胞介导通信来破坏面发育.
- 从暴露于乙醇的NCC中通过外体传递的miR-126在PC中抑制SDF1,导致FASD相关缺陷方面发挥着关键作用.
- 针对miR-126/SDF1通路为FASD提供了潜在的治疗策略.
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