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Matrix-transmitted paratensile signaling enables myofibroblast-fibroblast cross talk in fibrosis expansion.


ABSTRACT: While the concept of intercellular mechanical communication has been revealed, the mechanistic insights have been poorly evidenced in the context of myofibroblast-fibroblast interaction during fibrosis expansion. Here we report and systematically investigate the mechanical force-mediated myofibroblast-fibroblast cross talk via the fibrous matrix, which we termed paratensile signaling. Paratensile signaling enables instantaneous and long-range mechanotransduction via collagen fibers (less than 1 s over 70 ?m) to activate a single fibroblast, which is intracellularly mediated by DDR2 and integrin signaling pathways in a calcium-dependent manner through the mechanosensitive Piezo1 ion channel. By correlating in vitro fibroblast foci growth models with mathematical modeling, we demonstrate that the single-cell-level spatiotemporal feature of paratensile signaling can be applied to elucidate the tissue-level fibrosis expansion and that blocking paratensile signaling can effectively attenuate the fibroblast to myofibroblast transition at the border of fibrotic and normal tissue. Our comprehensive investigation of paratensile signaling in fibrosis expansion broadens the understanding of cellular dynamics during fibrogenesis and inspires antifibrotic intervention strategies targeting paratensile signaling.

SUBMITTER: Liu L 

PROVIDER: S-EPMC7245086 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature

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Matrix-transmitted paratensile signaling enables myofibroblast-fibroblast cross talk in fibrosis expansion.

Liu Longwei L   Yu Hongsheng H   Zhao Hui H   Wu Zhaozhao Z   Long Yi Y   Zhang Jingbo J   Yan Xiaojun X   You Zhifeng Z   Zhou Lyu L   Xia Tie T   Shi Yan Y   Xiao Bailong B   Wang Yingxiao Y   Huang Chenyu C   Du Yanan Y  

Proceedings of the National Academy of Sciences of the United States of America 20200501 20


While the concept of intercellular mechanical communication has been revealed, the mechanistic insights have been poorly evidenced in the context of myofibroblast-fibroblast interaction during fibrosis expansion. Here we report and systematically investigate the mechanical force-mediated myofibroblast-fibroblast cross talk via the fibrous matrix, which we termed paratensile signaling. Paratensile signaling enables instantaneous and long-range mechanotransduction via collagen fibers (less than 1  ...[more]

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