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MAP Kinase Phosphatase-5 Deficiency Protects Against Pressure Overload-Induced Cardiac Fibrosis

Publication ,  Journal Article
Zhong, C; Min, K; Zhao, Z; Zhang, C; Gao, E; Huang, Y; Zhang, X; Baldini, M; Roy, R; Yang, X; Koch, WJ; Bennett, AM; Yu, J
Published in: Frontiers in Immunology
December 21, 2021

Cardiac fibrosis, a pathological condition due to excessive extracellular matrix (ECM) deposition in the myocardium, is associated with nearly all forms of heart disease. The processes and mechanisms that regulate cardiac fibrosis are not fully understood. In response to cardiac injury, macrophages undergo marked phenotypic and functional changes and act as crucial regulators of myocardial fibrotic remodeling. Here we show that the mitogen-activated protein kinase (MAPK) phosphatase-5 (MKP-5) in macrophages is involved in pressure overload-induced cardiac fibrosis. Cardiac pressure overload resulting from transverse aortic constriction (TAC) leads to the upregulation of gene expression in the heart. In mice lacking MKP-5, p38 MAPK and JNK were hyperactivated in the heart, and TAC-induced cardiac hypertrophy and myocardial fibrosis were attenuated. MKP-5 deficiency upregulated the expression of the ECM-degrading matrix metalloproteinase-9 () in the Ly6C (M2-type) cardiac macrophage subset. Consistent with findings, MKP-5 deficiency promoted MMP-9 expression and activity of pro-fibrotic macrophages in response to IL-4 stimulation. Furthermore, using pharmacological inhibitors against p38 MAPK, JNK, and ERK, we demonstrated that MKP-5 suppresses MMP-9 expression through a combined effect of p38 MAPK/JNK/ERK, which subsequently contributes to the inhibition of ECM-degrading activity. Taken together, our study indicates that pressure overload induces MKP-5 expression and facilitates cardiac hypertrophy and fibrosis. MKP-5 deficiency attenuates cardiac fibrosis through MAPK-mediated regulation of MMP9 expression in Ly6C cardiac macrophages.

Duke Scholars

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Published In

Frontiers in Immunology

DOI

EISSN

1664-3224

Publication Date

December 21, 2021

Volume

12

Publisher

Frontiers Media SA

Related Subject Headings

  • 3204 Immunology
  • 3105 Genetics
  • 3101 Biochemistry and cell biology
  • 1108 Medical Microbiology
  • 1107 Immunology
 

Citation

APA
Chicago
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MLA
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Zhong, C., Min, K., Zhao, Z., Zhang, C., Gao, E., Huang, Y., … Yu, J. (2021). MAP Kinase Phosphatase-5 Deficiency Protects Against Pressure Overload-Induced Cardiac Fibrosis. Frontiers in Immunology, 12. https://doi.org/10.3389/fimmu.2021.790511
Zhong, Chao, Kisuk Min, Zhiqiang Zhao, Cheng Zhang, Erhe Gao, Yan Huang, Xinbo Zhang, et al. “MAP Kinase Phosphatase-5 Deficiency Protects Against Pressure Overload-Induced Cardiac Fibrosis.” Frontiers in Immunology 12 (December 21, 2021). https://doi.org/10.3389/fimmu.2021.790511.
Zhong C, Min K, Zhao Z, Zhang C, Gao E, Huang Y, et al. MAP Kinase Phosphatase-5 Deficiency Protects Against Pressure Overload-Induced Cardiac Fibrosis. Frontiers in Immunology. 2021 Dec 21;12.
Zhong, Chao, et al. “MAP Kinase Phosphatase-5 Deficiency Protects Against Pressure Overload-Induced Cardiac Fibrosis.” Frontiers in Immunology, vol. 12, Frontiers Media SA, Dec. 2021. Crossref, doi:10.3389/fimmu.2021.790511.
Zhong C, Min K, Zhao Z, Zhang C, Gao E, Huang Y, Zhang X, Baldini M, Roy R, Yang X, Koch WJ, Bennett AM, Yu J. MAP Kinase Phosphatase-5 Deficiency Protects Against Pressure Overload-Induced Cardiac Fibrosis. Frontiers in Immunology. Frontiers Media SA; 2021 Dec 21;12.

Published In

Frontiers in Immunology

DOI

EISSN

1664-3224

Publication Date

December 21, 2021

Volume

12

Publisher

Frontiers Media SA

Related Subject Headings

  • 3204 Immunology
  • 3105 Genetics
  • 3101 Biochemistry and cell biology
  • 1108 Medical Microbiology
  • 1107 Immunology