Aqp1 Enhances Migration of Bone Marrow Mesenchymal Stem Cells Through Regulation of FAK and beta-Catenin
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AbstractBone marrow mesenchymal stem cells (MSCs) have the potential to migrate to the site of injury and regulate the repair process. Aquaporin 1 (Aqp1) is a water channel molecule and a regulator of endothelial cell migration. To study the role of Apq1 in MSC migration, we manipulated the expression of the Aqp1 gene in MSCs and explored its effects on MSC migration both in vitro and in vivo. Overexpression of Aqp1 promoted MSC migration, while depletion of Aqp1 impaired MSC migration in vitro. When the green fluorescent protein (GFP) labeled Aqp1 overexpressing MSCs were systemically injected into rats with a femoral fracture, there were significantly more GFP-MSCs found at the fracture gap in the Aqp1-GFP-MSC-treated group compared to the GFP-MSC group. To elucidate the underlying mechanism, we screened several migration-related regulators. The results showed that -catenin and focal adhesion kinase (FAK) were upregulated in the Aqp1-MSCs and downregulated in the Aqp1-depleted MSCs, while C-X-C chemokine receptor type 4 had no change. Furthermore, -catenin and FAK were co-immunoprecipitated with Aqp1, and depletion of FAK abolished the Aqp1 effects on MSC migration. This study demonstrates that Aqp1 enhances MSC migration ability mainly through the FAK pathway and partially through the -catenin pathway. Our finding suggests a novel function of Aqp1 in governing MSC migration, and this may aid MSC therapeutic applications.
All Author(s) ListMeng FB, Rui YF, Xu LL, Wan C, Jiang XH, Li G
Journal nameStem Cells and Development
Year2014
Month1
Day1
Volume Number23
Issue Number1
PublisherMary Ann Liebert
Pages66 - 75
ISSN1547-3287
eISSN1557-8534
LanguagesEnglish-United Kingdom
Web of Science Subject CategoriesCell & Tissue Engineering; CELL & TISSUE ENGINEERING; Cell Biology; Hematology; HEMATOLOGY; Medicine, Research & Experimental; MEDICINE, RESEARCH & EXPERIMENTAL; Research & Experimental Medicine; Transplantation; TRANSPLANTATION

Last updated on 2020-20-05 at 01:11