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- Title
ZO-1 regulates the migration of mesenchymal stem cells in cooperation with α-catenin in response to breast tumor cells.
- Authors
Park, Aran; Choi, Sanghyuk; Do, Jungbeom; Kim, Youngjae; Kim, Kyung-Sup; Koh, Eunjin; Park, Ki-Sook
- Abstract
Mesenchymal stem cells are recruited from the bone marrow into breast tumors, contributing to the creation of a tumor microenvironment that fosters tropism for breast tumors. However, the intrinsic mechanisms underlying the recruitment of bone marrow-derived mesenchymal stem cells (MSCs) into the breast tumor microenvironment are still under investigation. Our discoveries identified zonula occludens-1 (ZO-1) as a specific intrinsic molecule that plays a vital role in mediating the collective migration of MSCs towards breast tumor cells and transforming growth factor beta (TGF-β), which is a crucial factor secreted by breast tumor cells. Upon migration in response to MDA-MB-231 cells and TGF-β, MSCs showed increased formation of adherens junction-like structures (AJs) expressing N-cadherin and α-catenin at their cell-cell contacts. ZO-1 was found to be recruited into the AJs at the cell-cell contacts between MSCs. Additionally, ZO-1 collaborated with α-catenin to regulate AJ formation, dependently on the SH3 and GUK domains of the ZO-1 protein. ZO-1 knockdown led to the impaired migration of MSCs in response to the stimuli and subsequent downregulation of AJs formation at the cell-cell contacts during MSCs migration. Overall, our study highlights the novel role of ZO-1 in guiding MSC migration towards breast tumor cells, suggesting its potential as a new strategy for controlling and re-engineering the breast tumor microenvironment.
- Subjects
MESENCHYMAL stem cells; BREAST; BREAST tumors; TRANSFORMING growth factors-beta; WNT signal transduction; BONE marrow cancer
- Publication
Cell Death Discovery, 2024, Vol 10, Issue 1, p1
- ISSN
2058-7716
- Publication type
Article
- DOI
10.1038/s41420-023-01793-4