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Updated: Feb 22, 2026

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在温度依赖性性别确定过程中,甲的阴道发育和基因表达
Shinnosuke Okano1, Yukima Yoshizawa1, Shouei Nobuchi1
1Department of Biological Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, Niijuku 6-3-1, Katsushika, Tokyo 125-8585, Japan.
Developmental biology
|February 20, 2026
概括
在壁虎中,温度依赖性性别决定 (TSD) 涉及早期的基因路径分歧. 独特的基因调节,包括KDM6B,突出显示了爬行动物的TSD背后的多种分子机制.
科学领域:
- 生殖生物学 生殖生物学
- 发展生物学 发展生物学
- 遗传学 是一个遗传学.
背景情况:
- 温度依赖性性别决定 (TSD) 在爬行动物中很常见,但其在状动物中的分子基础尚不清楚.
- 了解TSD机制对于爬行动物保护和进化研究至关重要.
研究的目的:
- 调查甲 (Eublepharis macularius) 发生性腺发育和TSD的分子机制.
- 为了确定关键的基因和调节途径参与温度敏感的性别确定在状爬行动物.
主要方法:
- 子的性腺发育的组织学和转录学分析.
- 温度转移实验以确定温度敏感期 (TSP).
- 基因表达造型,以识别性别和温度之间不同调节的基因.
主要成果:
- 该TSP在胚胎阶段36结束;男性和女性的途径在阶段34分离,在组织学分化之前.
- 男性相关基因 (AMH,DMRT1,SOX9) 的上调先于女性标记物 (FOXL2,CYP19A1).
- 与海相比,甲甲表现出独特的KDM6B调节,在温暖的温度下早期激活,并确定了RNA拼接基因作为早期温度响应因素.
结论:
- 淋巴体区分的核心基因网络被保留,但上游热敏调节在TSD爬行动物之间有所不同.
- 子是研究环境对生殖腺命运和TSD演变的影响的一个有价值的模型.
- 转录后调节可能在TSD级联中发挥作用.
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