不同的监管网络控制了类和类蛇的毒素基因表达
Cassandra M Modahl1,2, Summer Xia Han3,4, Jory van Thiel5,6
1Department of Biological Sciences, Faculty of Science, National University of Singapore, Singapore, Singapore. Cassandra.Modahl@lstmed.ac.uk.
BMC genomics
|February 16, 2024
概括
蛇毒的进化涉及类和类蛇的独特基因调节. 对比基因组学揭示了独特的转录因子和microRNA在毒药生产中的作用,突出了独立的进化路径.
科学领域:
- 进化生物学是进化的生物学.
- 基因组学就是基因组学.
- 分子生物学分子生物学
背景情况:
- 蛇毒腺提供了进化新奇性的洞察力.
- 蛇家族Elapidae和Viperidae表现出不同的毒毒毒素样式.
- 有限的研究存在于elapid蛇毒素基因调节.
研究的目的:
- 为了研究虫毒腺中的基因表达和microRNA概况.
- 为了比较elapids和viperids之间的毒液生产调节.
- 为了识别elapid和viperid毒素基因中的cis-和trans-acting调节元素.
主要方法:
- 高通量RNA测序elapid毒液腺体 (奶制与未奶制).
- 对类和类蛇毒系统进行比较基因组学分析.
- 识别涉及毒药生产的转录因子和微RNA.
主要成果:
- 存在保存的途径 (未折叠的蛋白质反应,Notch信号传递,胆固醇稳态).
- 观察到的基因组甲基化,转录因子 (elapids中的Sp1,viperids中的NFI) 和microRNA的差异.
- 在毒素基因促进体中发现的Sp1和NFI cis调节元素,每个家族都有独特的元素.
- 不同的microRNA档案表明,elapid和viperid毒素基因之间存在差异性的转录后调节.
结论:
- 类和类蛇表现出独立的毒素基因调节.
- 多种不同的调节机制有助于毒性表型.
- 相对的转录基因组和基因组分析揭示了毒素系统的进化分歧.
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