EPISODE · Jun 28, 2026 · 17 MIN
1196-朊病毒介导的变异调控与进化适应
from 聊聊Sci
该研究揭示了朊病毒蛋白自组装在调节基因组稳定性和突变率方面的关键作用。研究人员发现,酿酒酵母中多种与核酸结合的蛋白可以通过朊病毒态的切换,可逆地改变基因组维护路径,从而影响生物体在压力环境下的适应能力。这种蛋白驱动的表观遗传机制能够显著提升或抑制突变频率,并促进减数分裂过程中的遗传重组与表型多样化。实验表明,通过靶向控制朊病毒维持的关键因子 Hsp104,可以有效阻断致病真菌产生耐药性的进化过程。总之,这项发现为理解蛋白质构象记忆如何驱动快速进化提供了全新的视角,并为抗击耐药性提供了潜在的治疗靶点。References:Van Elgort A, Jakobson C M, Chen Y R, et al. Prion-based protein self-assembly tunes mutagenesis to enable rapid adaptation[J]. Cell, 2026.前往小宇宙评论区与主播互动
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1196-朊病毒介导的变异调控与进化适应
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