尿路分泌年龄相关变化的遗传驱动因素
Wouter H van Megen1, Jeroen H F de Baaij1, Gary A Churchill2
1Department of Medical Biosciences, Radboudumc, Nijmegen, The Netherlands.
Physiological genomics
|July 22, 2024
概括
老龄化增加了小鼠的尿分泌量,与遗传变异有关. 虽然Oit3基因变异与年轻小鼠的水平有关,但它们不会影响处理. TRPM6基因表达的变化可能会影响老老鼠的分泌.
科学领域:
- 遗传学 遗传学 是一个
- 生理学 生理学 生理学
- 衰老研究研究 衰老研究
背景情况:
- 尿道 (Mg2+) 排泄表现出与年龄相关的变化,但其机制尚未完全理解.
- 遗传性在尿路Mg2+分泌的个体变异中起着重要作用.
研究的目的:
- 在小鼠中调查依赖年龄的尿液Mg2+分泌的遗传基础.
- 为了确定与不同生命阶段的Mg2+处理相关的候选基因.
主要方法:
- 尿液中的Mg2+分泌量在6个月,12个月和18个月的多样性异种 (DO) 老鼠中被测量.
- 进行了定量特征局部 (QTL) 分析,以确定与Mg2+分泌相关的遗传局部.
- 产生了Oit3淘汰赛 (Oit3-/-) 鼠标并进行了表征,以评估Oit3.3的作用.
- 用RNA测序 (RNA-Seq) 来分析基因表达,包括Trpm6.
主要成果:
- 在小鼠中,尿液中的Mg2+分泌量随年龄的增长而增加 (6个月和12个月和18个月).
- QTL分析发现了染色体10上的位点,与6个月的Mg2+分泌有关,Oit3作为候选基因. Oit3淘汰赛并没有改变尿路Mg2+的分泌.
- 19号染色体上的QTL与12个月和18个月的Mg2+分泌有关,其中含有TRPM6基因. Trpm6 mRNA表达与QTL效应相反相关.
结论:
- 在小鼠中,Oit3和Trpm6的遗传变异与不同年龄的尿路Mg2+分泌有关.
- OIT3不太可能是脏Mg2+处理的主要决定因素.
- TRPM6表达的变化可能会导致尿路Mg2+分泌的年龄相关变化.
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