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后代的遗传多样性调节了养育经验,预测了对Chd8的不同易感性
Manal Tabbaa1,2, Alexis Gamez1, A'Di Dust3
1Division of Neurology, Department of Pediatrics and Developmental Neuroscience and Neurogenetics Program, Children's Hospital Los Angeles, The Saban Research Institute, Los Angeles, CA 90027, USA.
遗传背景和早期生活经历在小鼠模型中显著影响神经发育障碍表型. 了解这些因素对于建模人类疾病异质性至关重要.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
- 发展生物学 发展生物学
背景情况:
- 鼠标模型对于研究人类疾病至关重要,特别是与CHD8.8等基因相关的神经发育障碍.
- 自闭症谱系障碍 (ASD) 的临床异质性强调了需要了解影响表型变异性的因素.
- 遗传背景影响Chd8哈普洛因不足小鼠的特征干扰,这表明对表型变异性的遗传影响更广泛.
研究的目的:
- 研究遗传多样性如何影响后代的行为和对早期生活经验的反应.
- 确定遗传背景是否影响对神经发育障碍的易感性.
- 探索遗传学和早期环境之间的相互作用,以塑造与Chd8哈普洛缺陷相关的表型.
主要方法:
- 系统地观察由基因相同的母亲抚养的基因多样性小鼠后代.
- 对幼和母相互作用的行为分析.
- 机器学习用于识别早期生活经验,预测断奶后的行为和认知特征.
主要成果:
- 在幼和母的行为中观察到显著的菌株差异.
- 早期生活垃圾经验被确定为性依赖性断奶后社会,焦虑类和认知特征障碍的强有力的预测因素.
- 在Chd8的表型变异性是受遗传背景和早期环境因素的影响.
结论:
- 疾病模型中的后代表型是遗传遗传因素和早期生活经验的结合.
- 纳入遗传多样性对于准确建模神经发育障碍中表型异质性背后的机制至关重要.
- 这项研究强调了在神经发育障碍的背景下考虑基因环境相互作用的重要性.
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