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Sharma S, Patel F, Ara H, Bess E, Shum A, Bhattarai S, Subedi U, Bell DS, Bhuiyan MS, Sun H, Batinic-Haberle I, Panchatcharam M, Miriyala S. Rotenone-Induced 4-HNE Aggresome Formation and Degradation in HL-1 Cardiomyocytes: Role of Autophagy Flux. Int J Mol Sci 2022; 23:ijms23094675. [PMID: 35563066 PMCID: PMC9105393 DOI: 10.3390/ijms23094675] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 04/21/2022] [Accepted: 04/22/2022] [Indexed: 11/22/2022] Open
Abstract
Reactive oxygen species (ROS) cause oxidative stress by generating reactive aldehydes known as 4-hydroxynonenal (4-HNE). 4-HNE modifies protein via covalent adduction; however, little is known about the degradation mechanism of 4-HNE-adducted proteins. Autophagy is a dynamic process that maintains cellular homeostasis by removing damaged organelles and proteins. In this study, we determined the role of a superoxide dismutase (SOD) mimetic MnTnBuOE-2-PyP5+ (MnP, BMX-001) on rotenone-induced 4-HNE aggresome degradation in HL-1 cardiomyocytes. A rotenone treatment (500 nM) given for 24 h demonstrated both increased ROS and 4-HNE aggresome accumulation in HL-1 cardiomyocytes. In addition, cardiomyocytes treated with rotenone displayed an increase in the autophagy marker LC3-II, as shown by immunoblotting and immunofluorescence. A pre-treatment with MnP (20 µM) for 24 h attenuated rotenone-induced ROS formation. An MnP pre-treatment showed decreased 4-HNE aggresomes and LC3-II formation. A rotenone-induced increase in autophagosomes was attenuated by a pre-treatment with MnP, as shown by fluorescent-tagged LC3 (tfLC3). Rotenone increased tubulin hyperacetylation through the ROS-mediated pathway, which was attenuated by MnP. The disruption of autophagy caused HL-1 cell death because a 3-methyladenine inhibitor of autophagosomes caused reduced cell death. Yet, rapamycin, an inducer of autophagy, increased cell death. These results indicated that a pre-treatment with MnP decreased rotenone-induced 4-HNE aggresomes by enhancing the degradation process.
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Affiliation(s)
- Sudha Sharma
- Department of Cellular Biology and Anatomy, Louisiana State University Health Sciences Center, Shreveport, LA 71103, USA; (S.S.); (F.P.); (H.A.); (E.B.); (A.S.); (S.B.); (U.S.); (D.S.B.); (H.S.)
| | - Foram Patel
- Department of Cellular Biology and Anatomy, Louisiana State University Health Sciences Center, Shreveport, LA 71103, USA; (S.S.); (F.P.); (H.A.); (E.B.); (A.S.); (S.B.); (U.S.); (D.S.B.); (H.S.)
| | - Hosne Ara
- Department of Cellular Biology and Anatomy, Louisiana State University Health Sciences Center, Shreveport, LA 71103, USA; (S.S.); (F.P.); (H.A.); (E.B.); (A.S.); (S.B.); (U.S.); (D.S.B.); (H.S.)
| | - Ezra Bess
- Department of Cellular Biology and Anatomy, Louisiana State University Health Sciences Center, Shreveport, LA 71103, USA; (S.S.); (F.P.); (H.A.); (E.B.); (A.S.); (S.B.); (U.S.); (D.S.B.); (H.S.)
| | - Alika Shum
- Department of Cellular Biology and Anatomy, Louisiana State University Health Sciences Center, Shreveport, LA 71103, USA; (S.S.); (F.P.); (H.A.); (E.B.); (A.S.); (S.B.); (U.S.); (D.S.B.); (H.S.)
| | - Susmita Bhattarai
- Department of Cellular Biology and Anatomy, Louisiana State University Health Sciences Center, Shreveport, LA 71103, USA; (S.S.); (F.P.); (H.A.); (E.B.); (A.S.); (S.B.); (U.S.); (D.S.B.); (H.S.)
| | - Utsab Subedi
- Department of Cellular Biology and Anatomy, Louisiana State University Health Sciences Center, Shreveport, LA 71103, USA; (S.S.); (F.P.); (H.A.); (E.B.); (A.S.); (S.B.); (U.S.); (D.S.B.); (H.S.)
| | - Daquonte Sanard Bell
- Department of Cellular Biology and Anatomy, Louisiana State University Health Sciences Center, Shreveport, LA 71103, USA; (S.S.); (F.P.); (H.A.); (E.B.); (A.S.); (S.B.); (U.S.); (D.S.B.); (H.S.)
| | - Md. Shenuarin Bhuiyan
- Department of Pathology and Translational Pathobiology, Louisiana State University Health Sciences Center, Shreveport, LA 71103, USA;
| | - Hong Sun
- Department of Cellular Biology and Anatomy, Louisiana State University Health Sciences Center, Shreveport, LA 71103, USA; (S.S.); (F.P.); (H.A.); (E.B.); (A.S.); (S.B.); (U.S.); (D.S.B.); (H.S.)
| | - Ines Batinic-Haberle
- Department of Radiation Oncology, Duke University School of Medicine, Durham, NC 27710, USA;
| | - Manikandan Panchatcharam
- Department of Cellular Biology and Anatomy, Louisiana State University Health Sciences Center, Shreveport, LA 71103, USA; (S.S.); (F.P.); (H.A.); (E.B.); (A.S.); (S.B.); (U.S.); (D.S.B.); (H.S.)
- Correspondence: (M.P.); (S.M.); Tel.: +1-3-186-756-938 (M.P.); +1-3-186-758-326 (S.M.)
| | - Sumitra Miriyala
- Department of Cellular Biology and Anatomy, Louisiana State University Health Sciences Center, Shreveport, LA 71103, USA; (S.S.); (F.P.); (H.A.); (E.B.); (A.S.); (S.B.); (U.S.); (D.S.B.); (H.S.)
- Correspondence: (M.P.); (S.M.); Tel.: +1-3-186-756-938 (M.P.); +1-3-186-758-326 (S.M.)
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