EPISODE · Jun 1, 2026 · 20 MIN
1064-微管动力学调控心肌细胞生长方向
from 聊聊Sci
这项研究揭示了微管动力学如何精准调控心肌细胞的生长方向与心脏重塑。实验表明，微管稳定性的增加会重定向mRNA出口与蛋白质合成，并加固闰盘结构，从而导致细胞增宽和心室壁增厚的向心性肥大。相反，微管去稳定化会破坏闰盘的完整性，诱导细胞拉伸，进而导致心腔扩张的离心性重塑。通过对小鼠模型和人类心脏样本的观察，研究证实了这种微管介导的分子机制在心脏病理适应中的关键作用。这些发现不仅阐明了心脏生长在空间协调上的基本原理，还为治疗肥厚型或扩张型心肌病提供了潜在的干预靶点。References:Scarborough E A, Randell R M, Uchida K, et al. Microtubule dynamics control the direction of cardiomyocyte growth[J]. Science, 2026: eadz1970.前往小宇宙评论区与主播互动
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