Biophysical forces mediated by respiration maintain lung alveolar epithelial cell fate.
Biophysical forces mediated by respiration maintain lung alveolar epithelial cell fate.
复制标题
由呼吸介导的生物物理力维持肺泡上皮细胞的命运。
DOI:
10.1016/j.cell.2023.02.010
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发表时间:
2023
期刊:
影响因子:
64.5
通讯作者:
Zhou,Su
中科院分区:
文献类型:
--
作者:
Shiraishi,Kazushige;Shah,ParishaP;Morley,MichaelP;Loebel,Claudia;Santini,GarrettT;Katzen,Jeremy;Basil,MariaC;Lin,SusanM;Planer,JosephD;Cantu,Edward;Jones,DakotaL;Nottingham,AnaN;Li,Shanru;Cardenas-Diaz,FabianL;Zhou,Su
Lungs undergo mechanical strain during breathing, but how these biophysical forces affect cell fate and tissue homeostasis are unclear. We show that biophysical forces through normal respiratory motion actively maintain alveolar type 1 (AT1) cell identity and restrict these cells from reprogramming into AT2 cells in the adult lung. AT1 cell fate is maintained at homeostasis by Cdc42- and Ptk2-mediated actin remodeling and cytoskeletal strain, and inactivation of these pathways causes a rapid reprogramming into the AT2 cell fate. This plasticity induces chromatin reorganization and changes in nuclear lamina-chromatin interactions, which can discriminate AT1 and AT2 cell identity. Unloading the biophysical forces of breathing movements leads to AT1-AT2 cell reprogramming, revealing that normal respiration is essential to maintain alveolar epithelial cell fate. These data demonstrate the integral function of mechanotransduction in maintaining lung cell fate and identifies the AT1 cell as an important mechanosensor in the alveolar niche.
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