Long Noncoding RNA-Enriched Vesicles Secreted by Hypoxic Cardiomyocytes Drive Cardiac Fibrosis
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Long Noncoding RNA-Enriched Vesicles Secreted by Hypoxic Cardiomyocytes Drive Cardiac Fibrosis. / Kenneweg, Franziska; Bang, Claudia; Xiao, Ke; Boulanger, Chantal M; Loyer, Xavier; Mazlan, Stephane; Schroen, Blanche; Hermans-Beijnsberger, Steffie; Foinquinos, Ariana; Hirt, Marc N; Eschenhagen, Thomas; Funcke, Sandra; Stojanovic, Stevan; Genschel, Celina; Schimmel, Katharina; Just, Annette; Pfanne, Angelika; Scherf, Kristian; Dehmel, Susann; Raemon-Buettner, Stella M; Fiedler, Jan; Thum, Thomas.
in: MOL THER-NUCL ACIDS, Jahrgang 18, 06.12.2019, S. 363-374.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Long Noncoding RNA-Enriched Vesicles Secreted by Hypoxic Cardiomyocytes Drive Cardiac Fibrosis
AU - Kenneweg, Franziska
AU - Bang, Claudia
AU - Xiao, Ke
AU - Boulanger, Chantal M
AU - Loyer, Xavier
AU - Mazlan, Stephane
AU - Schroen, Blanche
AU - Hermans-Beijnsberger, Steffie
AU - Foinquinos, Ariana
AU - Hirt, Marc N
AU - Eschenhagen, Thomas
AU - Funcke, Sandra
AU - Stojanovic, Stevan
AU - Genschel, Celina
AU - Schimmel, Katharina
AU - Just, Annette
AU - Pfanne, Angelika
AU - Scherf, Kristian
AU - Dehmel, Susann
AU - Raemon-Buettner, Stella M
AU - Fiedler, Jan
AU - Thum, Thomas
N1 - Copyright © 2019 The Author(s). Published by Elsevier Inc. All rights reserved.
PY - 2019/12/6
Y1 - 2019/12/6
N2 - Long non-coding RNAs (lncRNAs) have potential as novel therapeutic targets in cardiovascular diseases, but detailed information about the intercellular lncRNA shuttling mechanisms in the heart is lacking. Here, we report an important novel crosstalk between cardiomyocytes and fibroblasts mediated by the transfer of lncRNA-enriched extracellular vesicles (EVs) in the context of cardiac ischemia. lncRNA profiling identified two hypoxia-sensitive lncRNAs: ENSMUST00000122745 was predominantly found in small EVs, whereas lncRNA Neat1 was enriched in large EVs in vitro and in vivo. Vesicles were taken up by fibroblasts, triggering expression of profibrotic genes. In addition, lncRNA Neat1 was transcriptionally regulated by P53 under basal conditions and by HIF2A during hypoxia. The function of Neat1 was further elucidated in vitro and in vivo. Silencing of Neat1 in vitro revealed that Neat1 was indispensable for fibroblast and cardiomyocyte survival and affected fibroblast functions (reduced migration capacity, stalled cell cycle, and decreased expression of fibrotic genes). Of translational importance, genetic loss of Neat1 in vivo resulted in an impaired heart function after myocardial infarction highlighting its translational relevance.
AB - Long non-coding RNAs (lncRNAs) have potential as novel therapeutic targets in cardiovascular diseases, but detailed information about the intercellular lncRNA shuttling mechanisms in the heart is lacking. Here, we report an important novel crosstalk between cardiomyocytes and fibroblasts mediated by the transfer of lncRNA-enriched extracellular vesicles (EVs) in the context of cardiac ischemia. lncRNA profiling identified two hypoxia-sensitive lncRNAs: ENSMUST00000122745 was predominantly found in small EVs, whereas lncRNA Neat1 was enriched in large EVs in vitro and in vivo. Vesicles were taken up by fibroblasts, triggering expression of profibrotic genes. In addition, lncRNA Neat1 was transcriptionally regulated by P53 under basal conditions and by HIF2A during hypoxia. The function of Neat1 was further elucidated in vitro and in vivo. Silencing of Neat1 in vitro revealed that Neat1 was indispensable for fibroblast and cardiomyocyte survival and affected fibroblast functions (reduced migration capacity, stalled cell cycle, and decreased expression of fibrotic genes). Of translational importance, genetic loss of Neat1 in vivo resulted in an impaired heart function after myocardial infarction highlighting its translational relevance.
U2 - 10.1016/j.omtn.2019.09.003
DO - 10.1016/j.omtn.2019.09.003
M3 - SCORING: Journal article
C2 - 31634682
VL - 18
SP - 363
EP - 374
JO - MOL THER-NUCL ACIDS
JF - MOL THER-NUCL ACIDS
SN - 2162-2531
ER -