HAX1-Overexpression Augments Cardioprotective Efficacy of Stem Cell-Based Therapy Through Mediating Hippo-Yap Signaling
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Published:2024-05-07
Issue:6
Volume:20
Page:1569-1586
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ISSN:2629-3269
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Container-title:Stem Cell Reviews and Reports
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language:en
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Short-container-title:Stem Cell Rev and Rep
Author:
Cai Wen-Feng, Jiang Lin, Liang Jialiang, Dutta Suchandrima, Huang Wei, He Xingyu, Wu Zhichao, Paul Christian, Gao Xiang, Xu Meifeng, Kanisicak Onur, Zheng Junmeng, Wang YigangORCID
Abstract
AbstractAlthough stem/progenitor cell therapy shows potential for myocardial infarction repair, enhancing the therapeutic efficacy could be achieved through additional genetic modifications. HCLS1-associated protein X-1 (HAX1) has been identified as a versatile modulator responsible for cardio-protective signaling, while its role in regulating stem cell survival and functionality remains unknown. In this study, we investigated whether HAX1 can augment the protective potential of Sca1+ cardiac stromal cells (CSCs) for myocardial injury. The overexpression of HAX1 significantly increased cell proliferation and conferred enhanced resistance to hypoxia-induced cell death in CSCs. Mechanistically, HAX1 can interact with Mst1 (a prominent conductor of Hippo signal transduction) and inhibit its kinase activity for protein phosphorylation. This inhibition led to enhanced nuclear translocation of Yes-associated protein (YAP) and activation of downstream therapeutic-related genes. Notably, HAX1 overexpression significantly increased the pro-angiogenic potential of CSCs, as demonstrated by elevated expression of vascular endothelial growth factors. Importantly, implantation of HAX1-overexpressing CSCs promoted neovascularization, protected against functional deterioration, and ameliorated cardiac fibrosis in ischemic mouse hearts. In conclusion, HAX1 emerges as a valuable and efficient inducer for enhancing the effectiveness of cardiac stem or progenitor cell therapeutics.
Graphical Abstract
Funder
National Heart, Lung, and Blood Institute American Heart Association
Publisher
Springer Science and Business Media LLC
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