1
|
Francisco J, Byun J, Zhang Y, Kalloo OB, Mizushima W, Oka S, Zhai P, Sadoshima J, Del Re DP. The tumor suppressor RASSF1A modulates inflammation and injury in the reperfused murine myocardium. J Biol Chem 2019; 294:13131-13144. [PMID: 31311858 DOI: 10.1074/jbc.ra119.008970] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 07/11/2019] [Indexed: 12/29/2022] Open
Abstract
Inflammation is a central feature of cardiovascular disease, including myocardial infarction and heart failure. Reperfusion of the ischemic myocardium triggers a complex inflammatory response that can exacerbate injury and worsen heart function, as well as prevent myocardial rupture and mediate wound healing. Therefore, a more complete understanding of this process could contribute to interventions that properly balance inflammatory responses for improved outcomes. In this study, we leveraged several approaches, including global and regional ischemia/reperfusion (I/R), genetically modified mice, and primary cell culture, to investigate the cell type-specific function of the tumor suppressor Ras association domain family member 1 isoform A (RASSF1A) in cardiac inflammation. Our results revealed that genetic inhibition of RASSF1A in cardiomyocytes affords cardioprotection, whereas myeloid-specific deletion of RASSF1A exacerbates inflammation and injury caused by I/R in mice. Cell-based studies revealed that RASSF1A negatively regulates NF-κB and thereby attenuates inflammatory cytokine expression. These findings indicate that myeloid RASSF1A antagonizes I/R-induced myocardial inflammation and suggest that RASSF1A may be a promising target in immunomodulatory therapy for the management of acute heart injury.
Collapse
Affiliation(s)
- Jamie Francisco
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, New Jersey Medical School, Rutgers University, Newark, New Jersey 07103
| | - Jaemin Byun
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, New Jersey Medical School, Rutgers University, Newark, New Jersey 07103
| | - Yu Zhang
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, New Jersey Medical School, Rutgers University, Newark, New Jersey 07103
| | - Olivia Berman Kalloo
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, New Jersey Medical School, Rutgers University, Newark, New Jersey 07103
| | - Wataru Mizushima
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, New Jersey Medical School, Rutgers University, Newark, New Jersey 07103
| | - Shinichi Oka
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, New Jersey Medical School, Rutgers University, Newark, New Jersey 07103
| | - Peiyong Zhai
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, New Jersey Medical School, Rutgers University, Newark, New Jersey 07103
| | - Junichi Sadoshima
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, New Jersey Medical School, Rutgers University, Newark, New Jersey 07103
| | - Dominic P Del Re
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, New Jersey Medical School, Rutgers University, Newark, New Jersey 07103.
| |
Collapse
|