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The skin and mucous membranes serve as the primary line of defense against pathogens by providing both physical and chemical protection. These barriers are essential in preventing the entry and establishment of microbes, thereby maintaining the integrity of the host.
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
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自然益生菌可以改善遗传不育.

Chee Kiang Ewe1, Oded Rechavi1

  • 1Department of Neurobiology, Wise Faculty of Life Sciences and Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel.

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此摘要是机器生成的。

饮食等环境因素可以逆转C. elegans的遗传不育,这表明饮食诱导的表观遗传记忆会影响进化. 这项研究强调了微生物和饮食如何影响跨代表观遗传.

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科学领域:

  • 表观遗传学和发育生物学
  • 微生物学和宿主-病原体相互作用.
  • 进化生物学是进化的生物学.

背景情况:

  • 在C. elegans中破坏小RNA路径或染色质修饰剂可以导致致命的生殖系 (Mrt) 现型,导致跨代逐渐不孕,特别是在更高的温度下.
  • 这种Mrt表型与表观遗传记忆的遗传有关.
  • 在标准实验室条件下,C. elegans野生分离物通常表现出Mrt表型.

研究的目的:

  • 调查自然相关的微生物和饮食对C. elegans致命生殖线 (Mrt) 现型的影响.
  • 探索饮食诱导的表观遗传记忆在跨代遗传中的作用.
  • 了解塑造进化轨迹的潜在饮食基因相互作用.

主要方法:

  • 暴露C. elegans野生分离物与自然相关的细菌和微型菌.
  • 在不同的环境和饮食条件下观察死亡生殖系 (Mrt) 现型.
  • 在多代人之间评估表观遗传记忆持久性.

主要成果:

  • 与Mrt表型相关的不育性在C. elegans暴露于自然相关的细菌和微型菌时被防止.
  • 观察到饮食诱导的表观遗传记忆可以持续多代.
  • 有证据表明,饮食基因相互作用可以调节非遗传遗传.

结论:

  • 自然相关的微生物和饮食可以抵消C. elegans的致命生殖系 (Mrt) 现型.
  • 饮食诱导的表观遗传记忆在跨代遗传中起着重要作用.
  • 这些发现揭示了饮食,基因和表观遗传学之间的复杂相互作用,这些相互作用可能会影响进化.