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Global secretome analysis of resident cardiac progenitor cells from wild‐type and transgenic heart failure mice: Why ambience matters

Resident cardiac progenitor cells (CPCs) have gained attention in cardiac regenerative medicine primarily due to their paracrine activity. In our current study we determined the role of pathological conditions such as heart failure on the autocrine‐paracrine action of stem cell antigen‐1 (Sca‐1) exp...

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Bibliographic Details
Published in:Journal of cellular physiology 2019-07, Vol.234 (7), p.10111-10122
Main Authors: Samal, Rasmita, Sappa, Praveen Kumar, Gesell Salazar, Manuela, Wenzel, Kristin, Reinke, Yvonne, Völker, Uwe, Felix, Stephan Burkhard, Hammer, Elke, Könemann, Stephanie
Format: Article
Language:English
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Summary:Resident cardiac progenitor cells (CPCs) have gained attention in cardiac regenerative medicine primarily due to their paracrine activity. In our current study we determined the role of pathological conditions such as heart failure on the autocrine‐paracrine action of stem cell antigen‐1 (Sca‐1) expressing CPC. This comparative secretome profiling of Sca‐1+ cells derived from transgenic heart failure (αMHC–cyclin‐T1/Gαq overexpression [Cyc] cells) versus healthy (wild‐type [Wt] cells) mice, achieved via mass‐spectrometric quantification, enabled the identification of over 700 proteins. Our results demonstrate that the heart failure milieu caused a 2‐fold enrichment of extracellular matrix proteins (ECM) like biglycan, versican, collagen XII, and angiogenic factors like heparan sulfate proteoglycan 2, plasminogen activator inhibitor 1 in the secretome. We further elucidated the direct influence of the secretome on the functional behavior of Sca‐1 + cells via in vitro tube forming assay. Secreted factors present in the diseased milieu induced tube formation in Cyc cells (1.7‐fold; p 
ISSN:0021-9541
1097-4652
DOI:10.1002/jcp.27677