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01.09.2016 | Original Contribution | Ausgabe 5/2016 Open Access

Basic Research in Cardiology 5/2016

Mesenchymal stem cells attenuate inflammatory processes in the heart and lung via inhibition of TNF signaling

Zeitschrift:
Basic Research in Cardiology > Ausgabe 5/2016
Autoren:
Alessandra Martire, Fikru B. Bedada, Shizuka Uchida, Jochen Pöling, Marcus Krüger, Henning Warnecke, Manfred Richter, Thomas Kubin, Susanne Herold, Thomas Braun
Wichtige Hinweise

Electronic supplementary material

The online version of this article (doi:10.​1007/​s00395-016-0573-2) contains supplementary material, which is available to authorized users.
S. Herold is member of the German Center for Lung Research (DZL).
T. Braun is member of the German Center for Lung Research (DZL) and German Center for Cardiovascular Research (DZHK).

Abstract

Mesenchymal stem cells (MSC) have been used to treat different clinical conditions although the mechanisms by which pathogenetic processes are affected are still poorly understood. We have previously analyzed the homing of bone marrow-derived MSC to diseased tissues characterized by a high degree of mononuclear cell infiltration and postulated that MSC might modulate inflammatory responses. Here, we demonstrate that MSC mitigate adverse tissue remodeling, improve organ function, and extend lifespan in a mouse model of inflammatory dilative cardiomyopathy (DCM). Furthermore, MSC attenuate Lipopolysaccharide-induced acute lung injury indicating a general role in the suppression of inflammatory processes. We found that MSC released sTNF-RI, which suppressed activation of the NFκBp65 pathway in cardiomyocytes during DCM in vivo. Substitution of MSC by recombinant soluble TNF-R partially recapitulated the beneficial effects of MSC while knockdown of TNF-R prevented MSC-mediated suppression of the NFκBp65 pathway and improvement of tissue pathology. We conclude that sTNF-RI is a major part of the paracrine machinery by which MSC effect local inflammatory reactions.

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