1
|
d'Avenia M, Citro R, De Marco M, Veronese A, Rosati A, Visone R, Leptidis S, Philippen L, Vitale G, Cavallo A, Silverio A, Prota C, Gravina P, De Cola A, Carletti E, Coppola G, Gallo S, Provenza G, Bossone E, Piscione F, Hahne M, De Windt LJ, Turco MC, De Laurenzi V. A novel miR-371a-5p-mediated pathway, leading to BAG3 upregulation in cardiomyocytes in response to epinephrine, is lost in Takotsubo cardiomyopathy. Cell Death Dis 2015; 6:e1948. [PMID: 26512958 PMCID: PMC4632305 DOI: 10.1038/cddis.2015.280] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Revised: 07/31/2015] [Accepted: 08/05/2015] [Indexed: 02/08/2023]
Abstract
Molecular mechanisms protecting cardiomyocytes from stress-induced death, including tension stress, are essential for cardiac physiology and defects in these protective mechanisms can result in pathological alterations. Bcl2-associated athanogene 3 (BAG3) is expressed in cardiomyocytes and is a component of the chaperone-assisted autophagy pathway, essential for homeostasis of mechanically altered cells. BAG3 ablation in mice results in a lethal cardiomyopathy soon after birth and mutations of this gene have been associated with different cardiomyopathies including stress-induced Takotsubo cardiomyopathy (TTC). The pathogenic mechanism leading to TTC has not been defined, but it has been suggested that the heart can be damaged by excessive epinephrine (epi) spillover in the absence of a protective mechanism. The aim of this study was to provide more evidence for a role of BAG3 in the pathogenesis of TTC. Therefore, we sequenced BAG3 gene in 70 TTC patients and in 81 healthy donors with the absence of evaluable cardiovascular disease. Mutations and polymorphisms detected in the BAG3 gene included a frequent nucleotide change g2252c in the BAG3 3′-untranslated region (3′-UTR) of Takotsubo patients (P<0.05), resulting in loss of binding of microRNA-371a-5p (miR-371a-5p) as evidenced by dual-luciferase reporter assays and argonaute RNA-induced silencing complex catalytic component 2/pull-down assays. Moreover, we describe a novel signaling pathway in cardiomyocytes that leads to BAG3 upregulation on exposure to epi through an ERK-dependent upregulation of miR-371a-5p. In conclusion, the presence of a g2252c polymorphism in the BAG3 3′-UTR determines loss of miR-371a-5p binding and results in an altered response to epi, potentially representing a new molecular mechanism that contributes to TTC pathogenesis.
Collapse
Affiliation(s)
- M d'Avenia
- Department of Pharmacy (DIFARMA), University of Salerno, Fisciano, Italy.,Biouniversa s.r.l., c/o University of Salerno, Fisciano, Italy.,Department of Biomedical Sciences and Human Oncology, University of Bari, Bari, Italy
| | - R Citro
- 'Cuore' Department, University Hospital 'San Giovanni di Dio e Ruggi d'Aragona', Salerno, Italy
| | - M De Marco
- Department of Pharmacy (DIFARMA), University of Salerno, Fisciano, Italy.,Biouniversa s.r.l., c/o University of Salerno, Fisciano, Italy
| | - A Veronese
- Dipartimento di Scienze Mediche, Orali e Biotecnologiche, CeSI, Universita' 'G. D'Annunzio' di Chieti e Pescara, Pescara, Italy
| | - A Rosati
- Department of Pharmacy (DIFARMA), University of Salerno, Fisciano, Italy.,Biouniversa s.r.l., c/o University of Salerno, Fisciano, Italy
| | - R Visone
- Dipartimento di Scienze Mediche, Orali e Biotecnologiche, CeSI, Universita' 'G. D'Annunzio' di Chieti e Pescara, Pescara, Italy
| | - S Leptidis
- Faculty of Health, Medicine and Life Sciences, Department of Cardiology, CARIM School for Cardiovascular Diseases, Maastricht University, Maastricht, The Netherlands
| | - L Philippen
- Faculty of Health, Medicine and Life Sciences, Department of Cardiology, CARIM School for Cardiovascular Diseases, Maastricht University, Maastricht, The Netherlands
| | - G Vitale
- 'Cuore' Department, University Hospital 'San Giovanni di Dio e Ruggi d'Aragona', Salerno, Italy
| | - A Cavallo
- 'Cuore' Department, University Hospital 'San Giovanni di Dio e Ruggi d'Aragona', Salerno, Italy
| | - A Silverio
- 'Cuore' Department, University Hospital 'San Giovanni di Dio e Ruggi d'Aragona', Salerno, Italy
| | - C Prota
- 'Cuore' Department, University Hospital 'San Giovanni di Dio e Ruggi d'Aragona', Salerno, Italy
| | - P Gravina
- Department of Laboratory Medicine, 'Tor Vergata' University, Rome, Italy
| | - A De Cola
- Dipartimento di Scienze Mediche, Orali e Biotecnologiche, CeSI, Universita' 'G. D'Annunzio' di Chieti e Pescara, Pescara, Italy
| | - E Carletti
- Dipartimento di Scienze Mediche, Orali e Biotecnologiche, CeSI, Universita' 'G. D'Annunzio' di Chieti e Pescara, Pescara, Italy
| | - G Coppola
- Transfusional Department, University Hospital 'San Giovanni di Dio e Ruggi d'Aragona', Salerno, Italy
| | - S Gallo
- Transfusional Department, University Hospital 'San Giovanni di Dio e Ruggi d'Aragona', Salerno, Italy
| | - G Provenza
- Division of Cardiology San Francesco d'Assisi, Hospital of Oliveto Citra, Salerno, Italy
| | - E Bossone
- 'Cuore' Department, University Hospital 'San Giovanni di Dio e Ruggi d'Aragona', Salerno, Italy
| | - F Piscione
- 'Cuore' Department, University Hospital 'San Giovanni di Dio e Ruggi d'Aragona', Salerno, Italy
| | - M Hahne
- Institut de Genetique Moleculaire de Montpellier, CNRS UMR5535, Montpellier, France
| | - L J De Windt
- Faculty of Health, Medicine and Life Sciences, Department of Cardiology, CARIM School for Cardiovascular Diseases, Maastricht University, Maastricht, The Netherlands
| | - M C Turco
- Biouniversa s.r.l., c/o University of Salerno, Fisciano, Italy.,Department of Medicine and Surgery, University of Salerno, Fisciano, Italy
| | - V De Laurenzi
- Biouniversa s.r.l., c/o University of Salerno, Fisciano, Italy.,Dipartimento di Scienze Mediche, Orali e Biotecnologiche, CeSI, Universita' 'G. D'Annunzio' di Chieti e Pescara, Pescara, Italy
| |
Collapse
|