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Bu S, Singh A, Nguyen HC, Peddi B, Bhatt K, Ravendranathan N, Frisbee JC, Singh KK. Protein Disulfide Isomerase 4 Is an Essential Regulator of Endothelial Function and Survival. Int J Mol Sci 2024; 25:3913. [PMID: 38612722 PMCID: PMC11011381 DOI: 10.3390/ijms25073913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 03/29/2024] [Accepted: 03/29/2024] [Indexed: 04/14/2024] Open
Abstract
Endothelial autophagy plays an important role in the regulation of endothelial function. The inhibition of endothelial autophagy is associated with the reduced expression of protein disulfide isomerase 4 (PDIA-4); however, its role in endothelial cells is not known. Here, we report that endothelial cell-specific loss of PDIA-4 leads to impaired autophagic flux accompanied by loss of endothelial function and apoptosis. Endothelial cell-specific loss of PDIA-4 also induced marked changes in endothelial cell architecture, accompanied by the loss of endothelial markers and the gain of mesenchymal markers consistent with endothelial-to-mesenchymal transition (EndMT). The loss of PDIA-4 activated TGFβ-signaling, and inhibition of TGFβ-signaling suppressed EndMT in PDIA-4-silenced endothelial cells in vitro. Our findings help elucidate the role of PDIA-4 in endothelial autophagy and endothelial function and provide a potential target to modulate endothelial function and/or limit autophagy and EndMT in (patho-)physiological conditions.
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Affiliation(s)
- Shuhan Bu
- Department of Medical Biophysics, Schulich School of Medicine and Dentistry, University of Western Ontario, 1151 Richmond St. N., London, ON N6A 3K7, Canada; (S.B.); (A.S.); (H.C.N.); (B.P.); (K.B.); (N.R.); (J.C.F.)
| | - Aman Singh
- Department of Medical Biophysics, Schulich School of Medicine and Dentistry, University of Western Ontario, 1151 Richmond St. N., London, ON N6A 3K7, Canada; (S.B.); (A.S.); (H.C.N.); (B.P.); (K.B.); (N.R.); (J.C.F.)
| | - Hien C. Nguyen
- Department of Medical Biophysics, Schulich School of Medicine and Dentistry, University of Western Ontario, 1151 Richmond St. N., London, ON N6A 3K7, Canada; (S.B.); (A.S.); (H.C.N.); (B.P.); (K.B.); (N.R.); (J.C.F.)
- Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON N6A 3K7, Canada
| | - Bharatsinai Peddi
- Department of Medical Biophysics, Schulich School of Medicine and Dentistry, University of Western Ontario, 1151 Richmond St. N., London, ON N6A 3K7, Canada; (S.B.); (A.S.); (H.C.N.); (B.P.); (K.B.); (N.R.); (J.C.F.)
| | - Kriti Bhatt
- Department of Medical Biophysics, Schulich School of Medicine and Dentistry, University of Western Ontario, 1151 Richmond St. N., London, ON N6A 3K7, Canada; (S.B.); (A.S.); (H.C.N.); (B.P.); (K.B.); (N.R.); (J.C.F.)
| | - Naresh Ravendranathan
- Department of Medical Biophysics, Schulich School of Medicine and Dentistry, University of Western Ontario, 1151 Richmond St. N., London, ON N6A 3K7, Canada; (S.B.); (A.S.); (H.C.N.); (B.P.); (K.B.); (N.R.); (J.C.F.)
| | - Jefferson C. Frisbee
- Department of Medical Biophysics, Schulich School of Medicine and Dentistry, University of Western Ontario, 1151 Richmond St. N., London, ON N6A 3K7, Canada; (S.B.); (A.S.); (H.C.N.); (B.P.); (K.B.); (N.R.); (J.C.F.)
| | - Krishna K. Singh
- Department of Medical Biophysics, Schulich School of Medicine and Dentistry, University of Western Ontario, 1151 Richmond St. N., London, ON N6A 3K7, Canada; (S.B.); (A.S.); (H.C.N.); (B.P.); (K.B.); (N.R.); (J.C.F.)
- Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON N6A 3K7, Canada
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2
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Duan J, Huang Z, Nice EC, Xie N, Chen M, Huang C. Current advancements and future perspectives of long noncoding RNAs in lipid metabolism and signaling. J Adv Res 2023; 48:105-123. [PMID: 35973552 PMCID: PMC10248733 DOI: 10.1016/j.jare.2022.08.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 08/04/2022] [Accepted: 08/10/2022] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND The investigation of lncRNAs has provided a novel perspective for elucidating mechanisms underlying diverse physiological and pathological processes. Compelling evidence has revealed an intrinsic link between lncRNAs and lipid metabolism, demonstrating that lncRNAs-induced disruption of lipid metabolism and signaling contribute to the development of multiple cancers and some other diseases, including obesity, fatty liver disease, and cardiovascular disease. AIMOF REVIEW The current review summarizes the recent advances in basic research about lipid metabolism and lipid signaling-related lncRNAs. Meanwhile, the potential and challenges of targeting lncRNA for the therapy of cancers and other lipid metabolism-related diseases are also discussed. KEY SCIENTIFIC CONCEPT OF REVIEW Compared with the substantial number of lncRNA loci, we still know little about the role of lncRNAs in metabolism. A more comprehensive understanding of the function and mechanism of lncRNAs may provide a new standpoint for the study of lipid metabolism and signaling. Developing lncRNA-based therapeutic approaches is an effective strategy for lipid metabolism-related diseases.
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Affiliation(s)
- Jiufei Duan
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, and Collaborative Innovation Center for Biotherapy, 610041 Chengdu, China
| | - Zhao Huang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, and Collaborative Innovation Center for Biotherapy, 610041 Chengdu, China
| | - Edouard C Nice
- Department of Biochemistry and Molecular Biology, Monash University, Clayton, VIC, Australia
| | - Na Xie
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, and Collaborative Innovation Center for Biotherapy, 610041 Chengdu, China.
| | - Mingqing Chen
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, 430079 Wuhan, China.
| | - Canhua Huang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, and Collaborative Innovation Center for Biotherapy, 610041 Chengdu, China.
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Nguyen HC, Bu S, Nikfarjam S, Rasheed B, Michels DCR, Singh A, Singh S, Marszal C, McGuire JJ, Feng Q, Frisbee JC, Qadura M, Singh KK. Loss of fatty acid binding protein 3 ameliorates lipopolysaccharide-induced inflammation and endothelial dysfunction. J Biol Chem 2023; 299:102921. [PMID: 36681124 PMCID: PMC9988587 DOI: 10.1016/j.jbc.2023.102921] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 12/03/2022] [Accepted: 12/09/2022] [Indexed: 01/20/2023] Open
Abstract
Circulating fatty acid-binding protein 3 (FABP3) is an effective biomarker of myocardial injury and peripheral artery disease (PAD). The endothelium, which forms the inner most layer of every blood vessel, is exposed to higher levels of FABP3 in PAD or following myocardial injury, but the pathophysiological role of endothelial FABP3, the effect of FABP3 exposure on endothelial cells, and related mechanisms are unknown. Here, we aimed to evaluate the pathophysiological role of endothelial FABP3 and related mechanisms in vitro. Our molecular and functional in vitro analyses show that (1) FABP3 is basally expressed in endothelial cells; (2) inflammatory stress in the form of lipopolysaccharide (LPS) upregulated endothelial FABP3 expression; (3) loss of endogenous FABP3 protected endothelial cells against LPS-induced endothelial dysfunction; however, exogenous FABP3 exposure exacerbated LPS-induced inflammation; (4) loss of endogenous FABP3 protected against LPS-induced endothelial dysfunction by promoting cell survival and anti-inflammatory and pro-angiogenic signaling pathways. Together, these findings suggest that gain-of endothelial FABP3 exacerbates, whereas loss-of endothelial FABP3 inhibits LPS-induced endothelial dysfunction by promoting cell survival and anti-inflammatory and pro-angiogenic signaling. We propose that an increased circulating FABP3 in myocardial injury or PAD patients may be detrimental to endothelial function, and therefore, therapies aimed at inhibiting FABP3 may improve endothelial function in diseased states.
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Affiliation(s)
- Hien C Nguyen
- Department of Medical Biophysics, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada; Department of Anatomy and Cell Biology, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
| | - Shuhan Bu
- Department of Medical Biophysics, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
| | - Sepideh Nikfarjam
- Department of Medical Biophysics, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada; Department of Anatomy and Cell Biology, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
| | - Berk Rasheed
- Department of Medical Biophysics, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada; Department of Anatomy and Cell Biology, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
| | - David C R Michels
- Department of Medical Biophysics, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
| | - Aman Singh
- Department of Medical Biophysics, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
| | - Shweta Singh
- Department of Applied Science, Fanshawe College, London, Ontario, Canada
| | - Caroline Marszal
- Department of Medical Biophysics, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
| | - John J McGuire
- Department of Medical Biophysics, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
| | - Qingping Feng
- Physiology and Pharmacology, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
| | - Jefferson C Frisbee
- Department of Medical Biophysics, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
| | - Mohammad Qadura
- Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada
| | - Krishna K Singh
- Department of Medical Biophysics, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada; Department of Anatomy and Cell Biology, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada.
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Transcriptomics of angiotensin II-induced long noncoding and coding RNAs in endothelial cells. J Hypertens 2022; 40:1303-1313. [PMID: 35762471 DOI: 10.1097/hjh.0000000000003140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Angiotensin II (Ang II)-induced endothelial dysfunction plays an important role in the pathogenesis of cardiovascular diseases such as systemic hypertension, cardiac hypertrophy and atherosclerosis. Recently, long noncoding RNAs (lncRNAs) have been shown to play an essential role in the pathobiology of cardiovascular diseases; however, the effect of Ang II on lncRNAs and coding RNAs expression in endothelial cells has not been evaluated. Accordingly, we sought to evaluate the expression profiles of lncRNAs and coding RNAs in endothelial cells following treatment with Ang II. METHODS Human umbilical vein endothelial cells (HUVECs) were cultured and treated with Ang II (10-6 mol/l) for 24 h. The cells were then profiled for the expression of lncRNAs and mRNAs using the Arraystar Human lncRNA Expression Microarray V3.0. RESULTS In HUVECs following Ang II treatment, from a total of 30 584 lncRNA targets screened, 25 targets were significantly upregulated, while 69 were downregulated. In the same HUVECs samples, from 26 106 mRNA targets screened, 28 targets were significantly upregulated and 67 were downregulated. Of the differentially expressed lncRNAs, RP11-354P11.2 and RP11-360F5.1 were the most upregulated (11-fold) and downregulated (three-fold) lncRNAs, respectively. Assigning the differentially regulated genes into functional groups using bioinformatics reveals numerous genes involved in the nucleotide excision repair and ECM-receptor interaction. CONCLUSION This is the first study to profile the Ang II-induced differentially expressed lncRNAs and mRNAs in human endothelial cells. Our results reveal novel targets and substantially extend the list of potential candidate genes involved in Ang II-induced endothelial dysfunction and cardiovascular diseases.
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Cheng L, Wang H, Maboh R, Mao G, Wu X, Chen H. LncRNA LINC00281/Annexin A2 Regulates Vascular Smooth Muscle Cell Phenotype Switching via the Nuclear Factor-Kappa B Signaling Pathway. J Cardiovasc Transl Res 2022; 15:971-984. [PMID: 35478454 DOI: 10.1007/s12265-022-10242-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 03/21/2022] [Indexed: 12/28/2022]
Abstract
Abnormal phenotype switch in vascular smooth muscle cells (VSMCs) plays an important role in the initiation and progression of vascular proliferative diseases. Annexin A2 (ANXA2), related to the pro-inflammatory response, contributes to the proliferation and migration of VSMCs. This study explored the mechanisms involved in the regulation of VSMC phenotype modulation via ANXA2. The results revealed that ANXA2 promotes the phosphorylation of p65 and co-translocates with p65 into the nucleus, resulting in VSMC proliferation, migration, and dedifferentiation. Based on bioinformatics predictions and RNA immunoprecipitation assays, LINC00281 was confirmed to be an upstream regulator of ANXA2. Taken together, ANXA2, which is negatively regulated by the long noncoding RNA (lncRNA) LINC00281, has significant importance in the regulation of VSMC proliferation, migration, and phenotype switching via the nuclear factor-kappa B (NF-кB) p65 signaling pathway. This indicates that the lncRNA LINC00281/ANXA2/NF-кB p65 signaling pathway might be a new therapeutic target for vascular proliferative diseases.
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Affiliation(s)
- Lan Cheng
- The Shengli Clinical Medical College of Fujian Medical University, Fuzhou, 350001, China
| | - Huan Wang
- Hypertension Laboratory, Fujian Provincial Cardiovascular Disease Institute, Fujian Provincial Hospital, Fuzhou, 350001, China
| | - ReneNfornah Maboh
- The Shengli Clinical Medical College of Fujian Medical University, Fuzhou, 350001, China
| | - Gaowei Mao
- The Shengli Clinical Medical College of Fujian Medical University, Fuzhou, 350001, China
| | - Xiaoying Wu
- Hypertension Laboratory, Fujian Provincial Cardiovascular Disease Institute, Fujian Provincial Hospital, Fuzhou, 350001, China
| | - Hui Chen
- The Shengli Clinical Medical College of Fujian Medical University, Fuzhou, 350001, China. .,Hypertension Laboratory, Fujian Provincial Cardiovascular Disease Institute, Fujian Provincial Hospital, Fuzhou, 350001, China.
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Anderson KM, Anderson DM. LncRNAs at the heart of development and disease. Mamm Genome 2022; 33:354-365. [PMID: 35048139 DOI: 10.1007/s00335-021-09937-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 11/26/2021] [Indexed: 10/19/2022]
Abstract
Long noncoding RNAs (LncRNAs) have emerged as a diverse class of functional molecules that contribute to nearly every facet of mammalian cardiac development and disease. Recent examples show that lncRNAs can be important co-regulators of cardiac patterning and morphogenesis and modulators of the pathogenic signaling that drives heart disease. The flexibility and chemical nature of RNA allows lncRNAs to utilize diverse mechanisms, mediating their effects through their sequence, structure, and molecular interactions with DNA, protein, and other RNAs. In vivo, i.e., animal, studies of individual lncRNAs highlight their ability to balance conserved cardiac gene expression networks, serve as specific and early biomarkers, and indicate their promise as useful therapeutic targets to treat human heart disease. Here, we review recent functionally characterized lncRNAs in cardiac biology and pathology and provide a perspective on emerging approaches to decipher the role of lncRNAs in the heart.
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Affiliation(s)
- Kelly M Anderson
- Department of Medicine, Cardiovascular Research Institute, University of Rochester Medical Center, 601 Elmwood Avenue, Box CVRI, Rochester, NY, 14642, USA
| | - Douglas M Anderson
- Department of Medicine, Cardiovascular Research Institute, University of Rochester Medical Center, 601 Elmwood Avenue, Box CVRI, Rochester, NY, 14642, USA.
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Bu S, Singh KK. Epigenetic Regulation of Autophagy in Cardiovascular Pathobiology. Int J Mol Sci 2021; 22:ijms22126544. [PMID: 34207151 PMCID: PMC8235464 DOI: 10.3390/ijms22126544] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 06/12/2021] [Accepted: 06/16/2021] [Indexed: 02/07/2023] Open
Abstract
Cardiovascular diseases (CVDs) are the number one cause of debilitation and mortality worldwide, with a need for cost-effective therapeutics. Autophagy is a highly conserved catabolic recycling pathway triggered by various intra- or extracellular stimuli to play an essential role in development and pathologies, including CVDs. Accordingly, there is great interest in identifying mechanisms that govern autophagic regulation. Autophagic regulation is very complex and multifactorial that includes epigenetic pathways, such as histone modifications to regulate autophagy-related gene expression, decapping-associated mRNA degradation, microRNAs, and long non-coding RNAs; pathways are also known to play roles in CVDs. Molecular understanding of epigenetic-based pathways involved in autophagy and CVDs not only will enhance the understanding of CVDs, but may also provide novel therapeutic targets and biomarkers for CVDs.
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Affiliation(s)
| | - Krishna K. Singh
- Correspondence: ; Tel.: +1-519-661-2111 (ext. 80542) (Office) or (ext. 85683) (Lab)
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