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飞蛋白INTU通过依赖乳毛的HH信号调节小鼠肺部的生长和模式
Huiqing Zeng1, Shimaa Ali2, Aswathy Sebastian3
1Department of Biology, Eberly College of Science, Huck Institute of Life Sciences, The Pennsylvania State University, University Park, PA, 16802, USA.
Developmental biology
|July 19, 2024
概括
失去内转 (Intu) 通过损害乳头功能和刺信号来破坏胚胎肺部发育. 这会影响肺部生长,模式和呼吸道平滑肌肉分化,这对于预防先天性肺部缺陷至关重要.
科学领域:
- 发育生物学 发展生物学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 先天性肺形可以在出生时致命.
- 了解肺部发育机制是预防和早期干预的关键.
- 逆转 (Intu) 是一种影响乳毛和平面极性的基因.
研究的目的:
- 研究Inturned (Intu) 在小鼠胚胎肺部发育中的作用.
- 阐明Intu影响肺部生长和模式的分子机制.
- 在肺形态发生过程中确定Intu,毛功能和刺 (Hh) 信号之间的联系.
主要方法:
- 对反向 (Intu) 突变小鼠胚胎的分析.
- 评估初级眼的数量和分布.
- 对 (Hh) 信号通路目标基因表达 (Gli1, Ptch1) 的定量分析.
- 使用光滑激素激活Hh通路的药理激活.
- 转录组分析 (RNA测序) 用于识别差异表达基因 (DEG).
主要成果:
- 失去Intu会严重扰乱肺部生长和分支形态发生.
- 缺少直觉会导致肺组织中初级的数量减少.
- 刺 (Hh) 信号在Intu突变肺部受损,由减少Gli1和Ptch1表达体现出来.
- Hh通路的激活在野生型的肺部中拯救了管体发生,但不是Intu突变肺部.
- 转录组学揭示了因图突变体中DEGs中肌肉分化基因的丰富.
- 左肺和右肺之间的不对称基因表达在Intu突变体中减少.
结论:
- 逆转 (Intu) 对于胚胎肺部发育至关重要,通过依赖毛细胞的刺 (Hh) 信号来调节生长和模式.
- 在Intu突变体中,受损的毛功能和Hh信号有助于肺部形态遗传缺陷.
- 直觉在呼吸道平滑肌肉分化和肺部不对称性中起作用.
- 了解Intu的功能为预防严重的先天性肺形提供了洞察力.
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