在小鼠胃类动物中确定细胞类型特定调节者的交叉系系依赖性
Luca Braccioli1, Teun van den Brand1, Noemi Alonso Saiz1
1Division of Gene Regulation, Netherlands Cancer Institute, 1066 CX Amsterdam, the Netherlands.
Developmental cell
|March 18, 2025
概括
鼠类胃体揭示了哺乳动物发育必不可少的基因调节网络. 组织间的沟通对于脊髓形成至关重要,突出了对发育生物学的新见解.
科学领域:
- 发展生物学 发展生物学
- 基因组学就是基因组学.
- 干细胞生物学 干细胞生物学
背景情况:
- 基因表达对发育至关重要,但在体内哺乳动物的胚胎发生涉及复杂的多细胞相互作用.
- 基因组学的进步允许基因调节程序推断,但与子宫内复杂性作斗争.
- 胃类药物提供了一个体外模型来研究哺乳动物的发育,并克服体内限制.
研究的目的:
- 通过使用时间解决的单细胞染色质可访问性来划分小鼠胃体发育期间的调节特征.
- 确定胃类动物发育过渡的关键驱动因素.
- 研究组织间沟通在脊髓形成中的作用.
主要方法:
- 时间解析的单细胞染色质可访问性分析小鼠胃类动物.
- 研究了转录因子OCT4,SOX2和TBXT的作用.
- 研究了MSGN1和CDX2基因表达和切除对胃类细胞发育的影响.
- 用野生型和转基因细胞 (ΔMSGN1) 创建的嵌合体胃类动物.
主要成果:
- 确定了OCT4,SOX2和TBXT作为来自双强祖先的胃类发育的关键驱动因素.
- 中皮分化的特点是MSGN1,脊髓分化的特点是CDX2.
- 缺少CDX2 (ΔCDX) 的胃质素无法形成脊髓.
- 移除MSGN1抑制了对轴半皮和脊髓发育.
- 奇默的胃体证明,组织间的沟通是脊髓形成所必需的.
结论:
- 鼠类胃类动物有效地模拟了哺乳动物的发育,并揭示了关键的基因调节程序.
- MSGN1和CDX2分别在中皮和脊髓发育中起着至关重要的作用.
- 胃体内组织间的沟通对于适当的脊髓发育至关重要,为发育过程提供了洞察力.
关键词:
染色质可访问性 染色质可访问性这是一种胃化物 (gastruloid).组织间的沟通.这里是 mesoderm 和 mesoderm 的区别.一个单细胞的ATAC-seqq.脊髓是指脊髓中的一些部分.转录因子的转录因子更多相关视频
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