胚胎性发育的体质控制是由JAK/STAT通路调解的
Matthew Wawersik1, Allison Milutinovich, Abbie L Casper
1Biology Department, The Johns Hopkins University, Baltimore, Maryland 21218, USA.
Nature
|July 29, 2005
概括
转录的Janus酶/信号转换器和激活器 (JAK/STAT) 途径从男性体质组织发送信号到Drosophila生殖细胞. 这一途径对于男性生殖线性发育至关重要.
科学领域:
- 发展生物学 发展生物学
- 遗传学 是一个遗传学.
- 细胞生物学 细胞生物学
背景情况:
- 性繁殖依赖于不同的男性和女性生殖细胞 (精子和卵子) 的发展.
- 身体组织会影响生殖线的性别确定,例如在小鼠和Drosophila等生物体.
- 身体细胞控制生殖系性别决定的精确机制在很大程度上是未知的.
研究的目的:
- 为了研究体质组织如何影响Drosophila的生殖系性别确定.
- 为了确定涉及到体与胚芽细胞通信的特定信号通路,以确定性别.
主要方法:
- 利用Drosophila胚胎性腺体作为一个模型系统.
- 研究了 janus 激酶/信号转换器和转录激活器 (JAK/STAT) 途径的作用.
- 检查了JAK/STAT连接体的表达,未配对 (upd),以性别特定的方式.
主要成果:
- 该JAK/STAT通路介导从体质性腺到Drosophila中的生殖线的性别特异信号.
- 阴性生殖腺以男性特有的方式表达"未配对" (upd) 的JAK/STAT连接体.
- JAK/STAT通路对于雄性生殖细胞在发生性腺形成期间的行为至关重要,并且可以诱导雌性生殖细胞的男性类行为.
结论:
- JAK/STAT通路是体性腺信号的关键调解者,它调节了Drosophila的男性生殖线性发育.
- 这项研究提供了通过JAK/STAT途径对所马受控的生殖系性别决定的直接证据.
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