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Ma Y, Chiao YA, Clark R, Flynn ER, Yabluchanskiy A, Ghasemi O, Zouein F, Lindsey ML, Jin YF. Deriving a cardiac ageing signature to reveal MMP-9-dependent inflammatory signalling in senescence. Cardiovasc Res 2015; 106:421-31. [PMID: 25883218 DOI: 10.1093/cvr/cvv128] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2014] [Accepted: 04/02/2015] [Indexed: 01/26/2023] Open
Abstract
AIMS Cardiac ageing involves the progressive development of cardiac fibrosis and diastolic dysfunction coordinated by MMP-9. Here, we report a cardiac ageing signature that encompasses macrophage pro-inflammatory signalling in the left ventricle (LV) and distinguishes biological from chronological ageing. METHODS AND RESULTS Young (6-9 months), middle-aged (12-15 months), old (18-24 months), and senescent (26-34 months) mice of both C57BL/6J wild type (WT) and MMP-9 null were evaluated. Using an identified inflammatory pattern, we were able to define individual mice based on their biological, rather than chronological, age. Bcl6, Ccl24, and Il4 were the strongest inflammatory markers of the cardiac ageing signature. The decline in early-to-late LV filling ratio was most strongly predicted by Bcl6, Il1r1, Ccl24, Crp, and Cxcl13 patterns, whereas LV wall thickness was most predicted by Abcf1, Tollip, Scye1, and Mif patterns. With age, there was a linear increase in cardiac M1 macrophages and a decrease in cardiac M2 macrophages in WT mice; of which, both were prevented by MMP-9 deletion. In vitro, MMP-9 directly activated young macrophage polarization to an M1/M2 mid-transition state. CONCLUSION Our results define the cardiac ageing inflammatory signature and assign MMP-9 roles in mediating the inflammaging profile by indirectly and directly modifying macrophage polarization. Our results explain early mechanisms that stimulate ageing-induced cardiac fibrosis and diastolic dysfunction.
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Affiliation(s)
- Yonggang Ma
- San Antonio Cardiovascular Proteomics Center, San Antonio, TX 78229, USA Mississippi Center for Heart Research, Department of Physiology and Biophysics, University of Mississippi Medical Center, 2500 North State St., Jackson, MS 39216-4505, USA
| | - Ying Ann Chiao
- San Antonio Cardiovascular Proteomics Center, San Antonio, TX 78229, USA Department of Pathology, University of Washington, Seattle, WA, USA
| | - Ryan Clark
- San Antonio Cardiovascular Proteomics Center, San Antonio, TX 78229, USA Mississippi Center for Heart Research, Department of Physiology and Biophysics, University of Mississippi Medical Center, 2500 North State St., Jackson, MS 39216-4505, USA
| | - Elizabeth R Flynn
- San Antonio Cardiovascular Proteomics Center, San Antonio, TX 78229, USA Mississippi Center for Heart Research, Department of Physiology and Biophysics, University of Mississippi Medical Center, 2500 North State St., Jackson, MS 39216-4505, USA
| | - Andriy Yabluchanskiy
- San Antonio Cardiovascular Proteomics Center, San Antonio, TX 78229, USA Mississippi Center for Heart Research, Department of Physiology and Biophysics, University of Mississippi Medical Center, 2500 North State St., Jackson, MS 39216-4505, USA
| | - Omid Ghasemi
- San Antonio Cardiovascular Proteomics Center, San Antonio, TX 78229, USA Department of Electrical and Computer Engineering, The University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249, USA
| | - Fouad Zouein
- San Antonio Cardiovascular Proteomics Center, San Antonio, TX 78229, USA Mississippi Center for Heart Research, Department of Physiology and Biophysics, University of Mississippi Medical Center, 2500 North State St., Jackson, MS 39216-4505, USA
| | - Merry L Lindsey
- San Antonio Cardiovascular Proteomics Center, San Antonio, TX 78229, USA Mississippi Center for Heart Research, Department of Physiology and Biophysics, University of Mississippi Medical Center, 2500 North State St., Jackson, MS 39216-4505, USA Research Services, G.V. (Sonny) Montgomery Veterans Affairs Medical Center, Jackson, MS, USA
| | - Yu-Fang Jin
- San Antonio Cardiovascular Proteomics Center, San Antonio, TX 78229, USA Department of Electrical and Computer Engineering, The University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249, USA
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