Mechanical stretching boosts expansion and regeneration of intestinal organoids through fueling stem cell self-renewal

Meng F.; Shen C.; Yang L.Ni C.Huang J.Lin K.Cao Z.Xu S.Cui W.Wang X.Zhou B.Xiong C.Wang J.Zhao B.

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Mechanical stretching boosts expansion and regeneration of intestinal organoids through fueling stem cell self-renewal

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© 2022, The Author(s).Intestinal organoids, derived from intestinal stem cell self-organization, recapitulate the tissue structures and behaviors of the intestinal epithelium, which hold great potential for the study of developmental biology, disease modeling, and regenerative medicine. The intestinal epithelium is exposed to dynamic mechanical forces which exert profound effects on gut development. However, the conventional intestinal organoid culture system neglects the key role of mechanical microenvironments but relies solely on biological factors. Here, we show that adding cyclic stretch to intestinal organoid cultures remarkably up-regulates the signature gene expression and proliferation of intestinal stem cells. Furthermore, mechanical stretching stimulates the expansion of SOX9+ progenitors by activating the Wnt/β-Catenin signaling. These data demonstrate that the incorporation of mechanical stretch boosts the stemness of intestinal stem cells, thus benefiting organoid growth. Our findings have provided a way to optimize an organoid generation system through understanding cross-talk between biological and mechanical factors, paving the way for the application of mechanical forces in organoid-based models.

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《cell regeneration》 |2022年第1期|共页
作者
Meng F.; Shen C.; Yang L.Ni C.Huang J.Lin K.Cao Z.Xu S.Cui W.Wang X.Zhou B.Xiong C.Wang J.Zhao B.;
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作者单位

Shandong Key Laboratory of Biophysics Institute of Biophysics Dezhou University;

Department of Mechanics and Engineering Science College of Engineering Peking University;

State Key Laboratory of Genetic Engineering School of Life Sciences Zhongshan Hospital Fudan UniversityBeijing Innovation Center for Engineering Science and Advanced Technology College of Engineering Peking UniversityWenzhou Institute University of Chinese Academy of Sciences Oujiang Laboratory;

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正文语种英语
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Intestinal organoid; Lgr5+ stem cell; Mechanical stretching; Regeneration; Wnt/β-catenin signaling;

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Mechanical stretching boosts expansion and regeneration of intestinal organoids through fueling stem cell self-renewal

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