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Erschienen in: Journal of Cardiovascular Translational Research 6/2022

20.05.2022 | Original Article

Dual Specific Phosphatase 7 Exacerbates Dilated Cardiomyopathy, Heart Failure, and Cardiac Death by Inactivating the ERK1/2 Signaling Pathway

verfasst von: Jing Liu, Yihen Yin, Jing Ni, Peiyu Zhang, Wei-ming Li, Zheng Liu

Erschienen in: Journal of Cardiovascular Translational Research | Ausgabe 6/2022

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Abstract

Heart failure is one of the most common but complicated end-stage syndromes in clinical practice. Dilated cardiomyopathy is a myocardial structural abnormality that is associated with heart failure. Dual-specificity phosphatases (DUSPs) are a group of protein phosphatases that regulate signaling pathways in numerous diseases; however, their physiological and pathological impact on cardiovascular disease remains unknown. In the present study, we generated two transgenic mouse models, a DUSP7 knockout and a cardiac-specific DUSP7 overexpressor. Mice overexpressing DUSP7 showed an exacerbated disease phenotype, including severe dilated cardiomyopathy, heart failure, and cardiac death. We further demonstrated that high levels of DUSP7 inhibited ERK1/2 phosphorylation and influenced downstream c-MYC, c-FOS, and c-JUN gene expression but did not affect upstream activators. Taken together, our study reveals a novel molecular mechanism for DUSP7 and provides a new therapeutic target and clinical path to alleviate dilated cardiomyopathy and improve cardiac function.

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Metadaten
Titel
Dual Specific Phosphatase 7 Exacerbates Dilated Cardiomyopathy, Heart Failure, and Cardiac Death by Inactivating the ERK1/2 Signaling Pathway
verfasst von
Jing Liu
Yihen Yin
Jing Ni
Peiyu Zhang
Wei-ming Li
Zheng Liu
Publikationsdatum
20.05.2022
Verlag
Springer US
Erschienen in
Journal of Cardiovascular Translational Research / Ausgabe 6/2022
Print ISSN: 1937-5387
Elektronische ISSN: 1937-5395
DOI
https://doi.org/10.1007/s12265-022-10268-3

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