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本帖最后由 顾汉现 于 2022-2-27 11:26 编辑
p53 指导上皮修复过程中的前导细胞行为、迁移和清除
领研网
2022/02/21
论文
论文标题:p53 directs leader cell behavior, migration, and clearance during epithelial repair
作者:Kasia Kozyrska, Giulia Pilia, Medhavi Vishwakarma, Laura Wagstaff, Maja Goschorska, Silvia Cirillo, Saad Mohamad, Kelli Gallacher, Rafael E. Carazo Salas, Eugenia Piddini
期刊:Science
发表时间:2022/02/11
数字识别码:10.1126/science.abl8876
摘要:Epithelial cells migrate across wounds to repair injured tissue. Leader cells at the front of migrating sheets often drive this process. However, it is unclear how leaders emerge from an apparently homogeneous epithelial cell population. We characterized leaders emerging from epithelial monolayers in cell culture and found that they activated the stress sensor p53, which was sufficient to initiate leader cell behavior. p53 activated the cell cycle inhibitor p21WAF1/CIP1, which in turn induced leader behavior through inhibition of cyclin-dependent kinase activity. p53 also induced crowding hypersensitivity in leader cells such that, upon epithelial closure, they were eliminated by cell competition. Thus, mechanically induced p53 directs emergence of a transient population of leader cells that drive migration and ensures their clearance upon epithelial repair.
所属学科:
细胞生物学
导读(一晴)前导细胞驱动上皮细胞迁移从而修复受损组织,然而它们是如何从明显同质上皮细胞群体中脱颖而出的尚不清楚。研究发现从上皮单层中出现的前导细胞激活了应激传感器p53,进而激活细胞周期抑制剂p21WAF1/CIP1,通过抑制周期蛋白依赖性激酶活性诱导前导行为。P53还介导了前导细胞对细胞聚集的敏感反应,使其在上皮愈合时被其他细胞竞争淘汰。因此,p53引导了短暂的前导细胞群的出现,驱动迁移,并确保其在上皮修复时被清除。
文章标签
前导细胞
上皮细胞
细胞迁移
组织修复
应激传感器p53
https://www.science.org/doi/10.1126/science.abl8876
https://www.linkresearcher.com/t ... e-aca4-5a2445748350
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