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Lin H, Gao D, Wang S, Wang Z, Guan H, Wang Y, Zhou Y. Inhibition of circ_0000231 suppresses oxidized low density lipoprotein-induced apoptosis, autophagy and inflammation in human umbilical vein endothelial cells by regulating miR-590-5p/PDCD4 axis. Clin Hemorheol Microcirc 2024:CH231696. [PMID: 37066904 DOI: 10.3233/ch-231696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
BACKGROUND Circular RNAs (circRNAs) are the emerging informative RNAs, involved in cardiovascular diseases including atherosclerosis (AS). Endothelial injury is the initial qualitative change of AS. Thus, the objective of this study was to confirm the dysregulation and mechanism of circ_0000231 in cell model of AS at early stage in human umbilical vein endothelial cells (HUVECs) induced by oxidized low-density lipoprotein (ox-LDL). METHODS The expression of circ_0000231, miR-590-5p and programmed cell death 4 (PDCD4) was detected using real-time quantitative PCR and western blot. Cell injury was measured with MTT, flow cytometry, caspase-3 activity assay and enzyme-linked immunosorbent assay (ELISA). The interaction among circ_0000231, miR-590-5p and PDCD4 was validated by dual-luciferase reporter assay, RNA immunoprecipitation (RIP) and pull-down assays. RESULTS Stress ox-LDL decreased cell viability, and increased apoptosis rate and caspase-3 activity in HUVECs in a dose- and time-dependent manner in concomitant with promotions of interleukin-6, interleukin-1β, tumor necrosis factor-α, LC3-II/I and Beclin-1 levels. Besides, circ_0000231 and PDCD4 expressions were upregulated, and miR-590-5p was downregulated in ox-LDL-stimulated HUVECs. Functionally, knockdown of circ_0000231 and overexpression of miR-590-5p could suppress ox-LDL-elicited above effects on apoptosis, autophagy and inflammatory response, accompanied with PDCD4 downregulation. Physically, miR-590-5p could directly interact with circ_0000231 and PDCD4. CONCLUSION Downregulation of circ_0000231 suppresses HUVECs from ox-LDL-induced injury partially through regulating miR-590-5p/PDCD4 axis via competing endogenous RNA mechanism, showing a novel potential target for the pathology and treatment of endothelial injury in AS.
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Affiliation(s)
- Haiyan Lin
- Department of Cardiology, Ningbo Medical Treatment Center Lihuili Hospital, Ningbo University, China
| | - Da Gao
- Department of Cardiology, Ningbo Medical Treatment Center Lihuili Hospital, Ningbo University, China
| | - Shengjie Wang
- Department of Cardiology, Ningbo Medical Treatment Center Lihuili Hospital, Ningbo University, China
| | - Zicheng Wang
- Department of Cardiology, Ningbo Medical Treatment Center Lihuili Hospital, Ningbo University, China
| | - Haiwang Guan
- Department of Cardiology, Ningbo Medical Treatment Center Lihuili Hospital, Ningbo University, China
| | - Yanwei Wang
- Department of Cardiology, Ningbo Medical Treatment Center Lihuili Hospital, Ningbo University, China
| | - Ying Zhou
- Department of Cardiology, Zhejiang Provincial People's Hospital, China
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Lu W, Wan G, Zhu H, Zhu T, Zhang X. MiR-497-5p regulates ox-LDL-induced dysfunction in vascular endothelial cells by targeting VEGFA/p38/MAPK pathway in atherosclerosis. Heliyon 2024; 10:e28887. [PMID: 38601630 PMCID: PMC11004747 DOI: 10.1016/j.heliyon.2024.e28887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 03/21/2024] [Accepted: 03/26/2024] [Indexed: 04/12/2024] Open
Abstract
Background The impairment of endothelial cells triggered by oxidized low-density lipoprotein (ox-LDL) stands as a critical event in the advancement of atherosclerosis (AS). MiR-497-5p has been recognized as a potential predictor for AS, but its precise involvement in ox-LDL-induced endothelial cell dysfunction remains to be elucidated. Methods An in vitro AS cell model was established by exposing human umbilical vein endothelial cells (HUVECs) to 100 μg/mL ox-LDL for 24 h. The assessment of endothelial cell function included evaluating cell viability, caspase-3 activity, inflammatory factors, and oxidative markers. Molecular mechanisms were elucidated through quantitative real-time PCR, Western blot analysis, and luciferase reporter assays. Results Our investigation revealed that exposure to ox-LDL led to an upregulation in miR-497-5p and p-p38 levels, while downregulating the expression of vascular endothelial growth factor A (VEGFA) and phosphorylated (p)-endothelial nitric oxide synthase (p-eNOS) in HUVECs. Ox-LDL exposure resulted in decreased cell viability and angiogenic capacity, coupled with increased apoptosis, inflammation, and oxidative stress in HUVECs, partially mediated by the upregulation of miR-497-5p. We confirmed VEGFA as a direct target of miR-497-5p. Interfering with VEGFA expression significantly reversed the effects mediated by miR-497-5p silencing in HUVECs exposed to ox-LDL. Conclusions In summary, our findings demonstrate that miR-497-5p exacerbates ox-LDL-induced dysfunction in HUVECs through the activation of the p38/MAPK pathway, mediated by the targeting of VEGFA.
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Affiliation(s)
- Wei Lu
- Department of Cardiovascular Surgery, The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's Hospital, Quzhou, 324000, China
| | - Guoqing Wan
- School of Pharmacy, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - He Zhu
- Zhejiang Chinese Medical University, Zhejiang, China
| | - Tao Zhu
- Zhejiang Chinese Medical University, Zhejiang, China
| | - Xinmei Zhang
- Department of Cardiovascular Surgery, The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's Hospital, Quzhou, 324000, China
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Zhang YM, Wang GH, Xu MJ, Jin G. OGG1 prevents atherosclerosis-induced vascular endothelial cell injury through mediating DNA damage repair. Clin Hemorheol Microcirc 2024:CH232082. [PMID: 38363604 DOI: 10.3233/ch-232082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
OBJECTIVE This study was designed to investigate the role of 8-oxoguanine DNA glycosylase 1 (OGG1) in preventing atherosclerosis-induced vascular EC injury, thereby providing a theoretical basis for the exploration of drug targets and treatment methods for atherosclerosis. METHODS Human umbilical vein cell line (EA.hy926) was treated with ox-LDL to construct an in vitro atherosclerotic cell model. pcDNA3.1-OGG1 was transfected into EA.hy926 cells to overexpress OGG1. qRT-PCR, CCK-8 assay, flow cytometry, oil red O staining, ELISA, comet assay and western blot were used to evaluate the OGG1 expression, viability, apoptosis level, lipid droplet content, 8-OHdG level and DNA damage of cells in each group. RESULTS Compared with the Control group, ox-LDL stimulation of endothelial cells significantly decreased cell viability, promoted apoptosis and DNA damage, and increased intracellular levels of 8-OHdG and γH2AX, while decreasing protein levels of PPARγ, FASN, FABP4, RAD51 and POLB. However, overexpression of OGG1 can significantly inhibit ox-LDL damage to endothelial cells, promote lipid metabolism, decrease lipid droplet content, and improve DNA repair function. CONCLUSION Over-expression of OGG1 improves DNA repair. Briefly, OGG1 over-expression enhances the DNA damage repair of ECs by regulating the expression levels of γH2AX, RAD51 and POLB, thereby enhancing cell viability and reducing apoptosis.
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Affiliation(s)
- Yi-Ming Zhang
- Health Management Physical Examination Center, Shaoxing People's Hospital, Shaoxing, Zhejiang, China
| | - Guo-Hua Wang
- Health Management Physical Examination Center, Shaoxing People's Hospital, Shaoxing, Zhejiang, China
| | - Miao-Jun Xu
- Health Management Physical Examination Center, Shaoxing People's Hospital, Shaoxing, Zhejiang, China
| | - Gan Jin
- Health Management Physical Examination Center, Shaoxing People's Hospital, Shaoxing, Zhejiang, China
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4
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Men X, Hu A, Xu T. CircLZIC regulates ox-LDL-induced HUVEC cell proliferation and apoptosis via Micro-330-5p/NOTCH2 axis in atherosclerosis. Clin Hemorheol Microcirc 2024; 87:115-127. [PMID: 38277288 PMCID: PMC11191521 DOI: 10.3233/ch-232063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2024]
Abstract
Atherosclerosis (AS) is a major chronic non-communicable disease and a primary cause of cardiovascular disease. Recent studies have shown that circRNAs are potential epigenetic factors that regulate vascular endothelial inflammatory responses and AS progression. Therefore, identification of the circRNAs that regulate ox-LDL levels is a critical step to understanding the pathology of AS. Our study is aim to investigate how circLZIC regulates atherosclerosis (AS) via the Micro-330-5p/NOTCH2 regulatory axis. The results showed that CircLZIC and NOTCH2 are highly expressed in human AS clinical samples, while Micro-330-5p is expressed locally. The CCK-8 experiment results showed that circLZIC promotes the proliferation of HUVECS cells. Flow cytometry analysis showed that circLZIC act as an inhibitor of HUVEC cell apoptosis. The expression level of Micro-330-5p can be up-regulated by transfection of small interfering RNA against circLZIC. Further, Starbase predicted that Micro-330-5p could target and regulate NOTCH2. Next, we confirmed that overexpression of Micro-330-5p could significantly reduce the expression of fluorescein using the double Luciferase reporter assay. RIP-qRT-PCR experiment showed that Micro-330-5p and NOTCH2 mRNAs are effectively enriched by ago2 protein. Further, we found that knocking down circLZIC increases the expression of Micro-330-5p and promotes cell apoptosis, while inhibiting the expression of NOTCH2 and cell activity. On the other hand, co-transfection of Micro-330-5p inhibitor decreases Micro-330-5p expression and inhibit cell apoptosis, while increasing NOTCH2 expression and cell activity. In conclusion, CircLZIC regulates HUVEC cell activity by the Micro-330-5p/NOTCH2 signaling pathway, suggesting that circLZIC plays a key role in atherosclerosis development.
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Affiliation(s)
- Xingping Men
- Department of Cardiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong, China
| | - Aizhen Hu
- Department of Cardiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong, China
| | - Tingting Xu
- Department of Cardiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong, China
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Chen W, Liu Y, Li L, Liang B, Wang S, Xu X, Xing D, Wu X. The potential role and mechanism of circRNAs in foam cell formation. Noncoding RNA Res 2023; 8:315-325. [PMID: 37032721 PMCID: PMC10074414 DOI: 10.1016/j.ncrna.2023.03.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 03/02/2023] [Accepted: 03/18/2023] [Indexed: 03/29/2023] Open
Abstract
Atherosclerosis is a significant risk factor for coronary heart disease (CHD) and myocardial infarction (MI). Atherosclerosis develops during foam cell generation, which is caused by an imbalance in cholesterol uptake, esterification, and efflux. LOX-1, SR-A1, and CD36 all increased cholesterol uptake. ACAT1 and ACAT2 promote free cholesterol (FC) esterification to cholesteryl esters (CE). The hydrolysis of CE to FC was aided by nCEH. FC efflux was promoted by ABCA1, ABCG1, ADAM10, and apoA-I. SR-BI promotes not only cholesterol uptake but also FC efflux. Circular RNAs (circRNAs), which are single-stranded RNAs with a closed covalent circular structure, have emerged as promising biomarkers and therapeutic targets for atherosclerosis due to their highly tissue, cell, and disease state-specific expression profiles. Numerous studies have shown that circRNAs regulate foam cell formation, acting as miRNA sponges to influence atherosclerosis development by regulating the expression of SR-A1, CD36, ACAT2, ABCA1, ABCG1, ADAM10, apoA-I, SR-B1. Several circRNAs, including circ-Wdr91, circ 0004104, circRNA0044073, circRNA_0001805, circDENND1B, circRSF1, circ 0001445, and circRNA 102682, are potential biomarkers for atherosclerosis to better evaluate cardiovascular risk. It is difficult to deliver synthetic therapeutic circRNAs to the desired target tissues. Nanotechnology, such as GA-RM/GZ/PL, may be an important solution to this problem. In this review, we focus on the potential role and mechanism of circRNA/miRNA axis in foam cell formation in the hopes of discovering new targets for the diagnosis, prevention, and treatment of atherosclerosis.
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Affiliation(s)
- Wujun Chen
- Department of Orthopedics, Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong, 266071, China
| | - Yihui Liu
- Department of Radiotherapy, Affiliated Hospital of Weifang Medical University, Key Laboratory of Precision Radiation Therapy for Tumors in Weifang City, School of Medical Imaging, Weifang Medical University, Weifang, Shandong, 261031, China
| | - Ling Li
- Department of Pharmacy, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, 519000, China
| | - Bing Liang
- Department of Orthopedics, Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong, 266071, China
| | - Shuai Wang
- Department of Radiotherapy, Affiliated Hospital of Weifang Medical University, Key Laboratory of Precision Radiation Therapy for Tumors in Weifang City, School of Medical Imaging, Weifang Medical University, Weifang, Shandong, 261031, China
| | - Xiaodan Xu
- Department of Pathology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230022, China
- Corresponding author.
| | - Dongming Xing
- Department of Orthopedics, Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong, 266071, China
- School of Life Sciences, Tsinghua University, Beijing, 100084, China
- Corresponding author. Department of Orthopedics, Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong, 266071, China.
| | - Xiaolin Wu
- Department of Orthopedics, Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong, 266071, China
- Corresponding author. Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong, 266071, China.
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6
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Dergunova LV, Vinogradina MA, Filippenkov IB, Limborska SA, Dergunov AD. Circular RNAs Variously Participate in Coronary Atherogenesis. Curr Issues Mol Biol 2023; 45:6682-6700. [PMID: 37623241 PMCID: PMC10453518 DOI: 10.3390/cimb45080422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 08/03/2023] [Accepted: 08/11/2023] [Indexed: 08/26/2023] Open
Abstract
Over the past decade, numerous studies have shown that circular RNAs (circRNAs) play a significant role in coronary artery atherogenesis and other cardiovascular diseases. They belong to the class of non-coding RNAs and arise as a result of non-canonical splicing of premature RNA, which results in the formation of closed single-stranded circRNA molecules that lack 5'-end caps and 3'-end poly(A) tails. circRNAs have broad post-transcriptional regulatory activity. Acting as a sponge for miRNAs, circRNAs compete with mRNAs for binding to miRNAs, acting as competing endogenous RNAs. Numerous circRNAs are involved in the circRNA-miRNA-mRNA regulatory axes associated with the pathogenesis of cardiomyopathy, chronic heart failure, hypertension, atherosclerosis, and coronary artery disease. Recent studies have shown that сirc_0001445, circ_0000345, circ_0093887, сircSmoc1-2, and circ_0003423 are involved in the pathogenesis of coronary artery disease (CAD) with an atheroprotective effect, while circ_0002984, circ_0029589, circ_0124644, circ_0091822, and circ_0050486 possess a proatherogenic effect. With their high resistance to endonucleases, circRNAs are promising diagnostic biomarkers and therapeutic targets. This review aims to provide updated information on the involvement of atherogenesis-related circRNAs in the pathogenesis of CAD. We also discuss the main modern approaches to detecting and studying circRNA-miRNA-mRNA interactions, as well as the prospects for using circRNAs as biomarkers and therapeutic targets for the treatment of cardiovascular diseases.
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Affiliation(s)
- Liudmila V. Dergunova
- Laboratory of Human Molecular Genetics, National Research Center “Kurchatov Institute”, Kurchatov Sq. 2, Moscow 123182, Russia; (M.A.V.); (I.B.F.); (S.A.L.)
| | - Margarita A. Vinogradina
- Laboratory of Human Molecular Genetics, National Research Center “Kurchatov Institute”, Kurchatov Sq. 2, Moscow 123182, Russia; (M.A.V.); (I.B.F.); (S.A.L.)
| | - Ivan B. Filippenkov
- Laboratory of Human Molecular Genetics, National Research Center “Kurchatov Institute”, Kurchatov Sq. 2, Moscow 123182, Russia; (M.A.V.); (I.B.F.); (S.A.L.)
| | - Svetlana A. Limborska
- Laboratory of Human Molecular Genetics, National Research Center “Kurchatov Institute”, Kurchatov Sq. 2, Moscow 123182, Russia; (M.A.V.); (I.B.F.); (S.A.L.)
| | - Alexander D. Dergunov
- Laboratory of Structural Fundamentals of Lipoprotein Metabolism, National Medical Research Center for Therapy and Preventive Medicine, Petroverigsky Street 10, Moscow 101990, Russia;
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7
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Triska J, Mathew C, Zhao Y, Chen YE, Birnbaum Y. Circular RNA as Therapeutic Targets in Atherosclerosis: Are We Running in Circles? J Clin Med 2023; 12:4446. [PMID: 37445481 DOI: 10.3390/jcm12134446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 06/26/2023] [Accepted: 06/29/2023] [Indexed: 07/15/2023] Open
Abstract
Much attention has been paid lately to harnessing the diagnostic and therapeutic potential of non-coding circular ribonucleic acids (circRNAs) and micro-RNAs (miRNAs) for the prevention and treatment of cardiovascular diseases. The genetic environment that contributes to atherosclerosis pathophysiology is immensely complex. Any potential therapeutic application of circRNAs must be assessed for risks, benefits, and off-target effects in both the short and long term. A search of the online PubMed database for publications related to circRNA and atherosclerosis from 2016 to 2022 was conducted. These studies were reviewed for their design, including methods for developing atherosclerosis and the effects of the corresponding atherosclerotic environment on circRNA expression. Investigated mechanisms were recorded, including associated miRNA, genes, and ultimate effects on cell mechanics, and inflammatory markers. The most investigated circRNAs were then further analyzed for redundant, disparate, and/or contradictory findings. Many disparate, opposing, and contradictory effects were observed across experiments. These include levels of the expression of a particular circRNA in atherosclerotic environments, attempted ascertainment of the in toto effects of circRNA or miRNA silencing on atherosclerosis progression, and off-target, cell-specific, and disease-specific effects. The high potential for detrimental and unpredictable off-target effects downstream of circRNA manipulation will likely render the practice of therapeutic targeting of circRNA or miRNA molecules not only complicated but perilous.
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Affiliation(s)
- Jeffrey Triska
- Department of Medicine, Baylor College of Medicine, Houston, TX 77030, USA
| | - Christo Mathew
- Department of Medicine, Baylor College of Medicine, Houston, TX 77030, USA
| | - Yang Zhao
- Cardiovascular Center, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
| | - Yuqing E Chen
- Cardiovascular Center, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
| | - Yochai Birnbaum
- Section of Cardiology, Department of Medicine, Baylor College of Medicine, Houston, TX 77030, USA
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8
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Kawaguchi S, Moukette B, Hayasaka T, Haskell AK, Mah J, Sepúlveda MN, Tang Y, Kim IM. Noncoding RNAs as Key Regulators for Cardiac Development and Cardiovascular Diseases. J Cardiovasc Dev Dis 2023; 10:jcdd10040166. [PMID: 37103045 PMCID: PMC10143661 DOI: 10.3390/jcdd10040166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 04/06/2023] [Accepted: 04/10/2023] [Indexed: 04/28/2023] Open
Abstract
Noncoding RNAs (ncRNAs) play fundamental roles in cardiac development and cardiovascular diseases (CVDs), which are a major cause of morbidity and mortality. With advances in RNA sequencing technology, the focus of recent research has transitioned from studies of specific candidates to whole transcriptome analyses. Thanks to these types of studies, new ncRNAs have been identified for their implication in cardiac development and CVDs. In this review, we briefly describe the classification of ncRNAs into microRNAs, long ncRNAs, and circular RNAs. We then discuss their critical roles in cardiac development and CVDs by citing the most up-to-date research articles. More specifically, we summarize the roles of ncRNAs in the formation of the heart tube and cardiac morphogenesis, cardiac mesoderm specification, and embryonic cardiomyocytes and cardiac progenitor cells. We also highlight ncRNAs that have recently emerged as key regulators in CVDs by focusing on six of them. We believe that this review concisely addresses perhaps not all but certainly the major aspects of current progress in ncRNA research in cardiac development and CVDs. Thus, this review would be beneficial for readers to obtain a recent picture of key ncRNAs and their mechanisms of action in cardiac development and CVDs.
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Affiliation(s)
- Satoshi Kawaguchi
- Department of Anatomy, Cell Biology, and Physiology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Bruno Moukette
- Department of Anatomy, Cell Biology, and Physiology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Taiki Hayasaka
- Department of Anatomy, Cell Biology, and Physiology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Angela K Haskell
- Department of Anatomy, Cell Biology, and Physiology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Jessica Mah
- Department of Anatomy, Cell Biology, and Physiology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Marisa N Sepúlveda
- Department of Anatomy, Cell Biology, and Physiology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Yaoliang Tang
- Vascular Biology Center, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
| | - Il-Man Kim
- Department of Anatomy, Cell Biology, and Physiology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
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Zhou Z, Hu Q, Guo H, Wang X. CircSEC11A knockdown alleviates oxidative stress and apoptosis and promotes cell proliferation and angiogenesis by regulating miR-29a-3p/SEMA3A axis in OGD-induced human brain microvascular endothelial cells (HBMECs). Clin Hemorheol Microcirc 2023; 84:247-262. [PMID: 36872771 DOI: 10.3233/ch-221689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
BACKGROUND Circular RNA (circRNA) has been found to play an important role in the progression of many diseases, including ischemic stroke. However, the regulatory mechanism of circSEC11A in ischemic stroke progression need to further investigation. METHODS Human brain microvascular endothelial cells (HBMECs) were stimulated by oxygen glucose deprivation (OGD). CircSEC11A, SEC11A mRNA and miR (microRNA)-29a-3p were quantified by quantitative real-time PCR (qRT-PCR). SEMA3A, BAX and BCL2 protein level was quantified by western blot. Oxidative stress, cell proliferation, angiogenesis and apoptosis abilities were gauged by oxidative stress assay kit, 5-Ethynyl-2'-Deoxyuridine (EdU) staining, tube formation assay and flow cytometry assays, respectively. Direct relationship between miR-29a-3p and circSEC11A or SEMA3A was validated by dual-luciferase reporter assay, RIP assay and RNA pull-down assay. RESULTS CircSEC11A was upregulated in OGD-induced HBMECs. OGD promoted the oxidative stress and apoptosis and inhibited cell proliferation and angiogenesis, while circSEC11A knockdown relieved the effects. CircSEC11A functioned as the sponge for miR-29a-3p, and miR-29a-3p inhibitor reversed the effects of si-circSEC11A on OGD-induced HBMECs oxidative injuries. Moreover, SEMA3A served as the target gene of miR-29a-3p. MiR-29a-3p inhibition ameliorated OGD-induced HBMECs oxidative injuries, while SEMA3A overexpression rescued the impacts of miR-29a-3p mimic. CONCLUSION CircSEC11A promoted the malignant progression in OGD-induced HBMECs through the mediation of miR-29a-3p/SEMA3A axis. This study has provided the new insight into the underlying application of circSEC11A in cell model of ischemic stroke.
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Affiliation(s)
- Ziying Zhou
- Department of Neurology, Wuhan Puren Hospital Affiliated to Wuhan University of Science and Technology, Wuhan, Hubei, China
| | - Qian Hu
- Department of Neurology, Wuhan Puren Hospital Affiliated to Wuhan University of Science and Technology, Wuhan, Hubei, China
| | - Hongmei Guo
- Department of Neurology, Wuhan Puren Hospital Affiliated to Wuhan University of Science and Technology, Wuhan, Hubei, China
| | - Xijia Wang
- Department of Neurology, Wuhan Puren Hospital Affiliated to Wuhan University of Science and Technology, Wuhan, Hubei, China
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10
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Zhang Z, Qin S, Wang R, Fang Z, Wang Y, Li F. Circ_0003575 knockdown alleviates ox-LDL-induced human aortic endothelial cell dysfunction in atherosclerosis by miR-637/TRAF6 axis. Clin Hemorheol Microcirc 2023; 85:173-187. [PMID: 37599528 DOI: 10.3233/ch-231858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
BACKGROUND Circular RNAs (circRNAs) are involved in the progression of atherosclerosis (AS). The present study aimed to determine the functions and mechanism of circ_0003575 in AS. METHODS Oxidized low-density lipoprotein (ox-LDL) was used to induce human aortic endothelial cells (HAECs) to establish an AS cell model. Cell Counting Kit-8 (CCK-8) assay and 5'-ethynyl-2'-deoxyuridine (EdU) assay were conducted to assess cell proliferation. Flow cytometry analysis was utilized to quantify cell apoptosis. Tube formation assay was performed to analyze angiogenesis ability. Enzyme linked immunosorbent assay (ELISA) was used to examine the concentrations of inflammatory factors. Quantitative real-time polymerase chain reaction (qRT-PCR) and western blot were manipulated for the expression of circ_0003575, microRNA-637 (miR-637) and TNF receptor associated factor 6 (TRAF6). Dual-luciferase reporter assay and RNA immunoprecipitation (RIP) assay were adopted to estimate the downstream targets of circ_0003575. RESULTS Ox-LDL treatment repressed the proliferation and angiogenesis and promoted the apoptosis and inflammation in HAECs. Circ_0003575 knockdown ameliorated ox-LDL-induced injury of HAECs. Circ_0003575 interacted with mi-R-637, which directly targeted TRAF6. Inhibition of miR-637 reversed the impacts of circ_0003575 knockdown on HAEC injury. Moreover, miR-637 overexpression promoted cell proliferation and angiogenesis and inhibited cell apoptosis and inflammation by targeting TRAF6 in ox-LDL-treated HAECs. Further, circ_0003575 silencing inhibited the activation of NF-κB pathway. CONCLUSION Circ_0003575 knockdown alleviated ox-LDL-induced HAEC damage by regulating miR-637/TRAF6 and NF-κB pathways.
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Affiliation(s)
- Zhanshuai Zhang
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Hebei North University, Zhangjiakou City, Hebei, China
| | - Shaoqiang Qin
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Hebei North University, Zhangjiakou City, Hebei, China
| | - Rui Wang
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Hebei North University, Zhangjiakou City, Hebei, China
| | - Zhiqin Fang
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Hebei North University, Zhangjiakou City, Hebei, China
| | - Yaling Wang
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Hebei North University, Zhangjiakou City, Hebei, China
| | - Fangjiang Li
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Hebei North University, Zhangjiakou City, Hebei, China
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11
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Zhu L, Zhao P, Meng X, Jin H, Tuo B. Circ_0091822 aggravates ox-LDL-induced endothelial cell injury through targeting the miR-661/RAB22A axis. Clin Hemorheol Microcirc 2022; 83:47-59. [PMID: 36057815 DOI: 10.3233/ch-221453] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Endothelial dysfunction is considered to be an important factor in the pathogenesis of atherosclerosis. Circular RNAs (circRNAs) have been confirmed to participate in the development of atherosclerosis. Nevertheless, the role and mechanism of circ_0091822 in atherosclerosis have not been studied yet. METHODS The expression of circ_0091822, miR-661 and RAB22A were analyzed by quantitative real-time polymerase chain reaction (qRT-PCR). The levels of interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) were estimated by enzyme-linked immunosorbent assay (ELISA). Cell viability was analyzed by Cell Counting Kit-8 (CCK-8) assay, cell proliferation was evaluated by EdU assay, and cell apoptosis was gauged by flow cytometry. Western blot was performed to assess the protein levels of Bax, Cleaved-caspase-3 and RAB22A. The interaction among miR-661 and circ_0091822 or RAB22A was verified by dual-luciferase reporter assayRESULTS:Ox-LDL enhanced the expression of circ_0091822 in HUVECs. It also constrained proliferation, promotes apoptosis and inflammation in HUVECs, and down-regulation of circ_0091822 attenuated these effects. Mechanically, circ_0091822 could serve as a sponge of miR-661, miR-661 interference rescued circ_0091822 inhibition-mediated effect on the biological functions in ox-LDL-induced HUVECs. Additionally, RAB22A was a target of miR-661, and its overexpression could partially overturn the negative regulation of miR-661 on ox-LDL-treated HUVECs injury. Importantly, circ_0091822 sponged miR-661 to positively regulate RAB22A expression. CONCLUSION Circ_0091822 contributed to cell injury by targeting miR-661/RAB22A axis in ox-LDL-stimulated HUVECs.
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Affiliation(s)
- Lingfeng Zhu
- Department of Cardiology, Luodian Hospital, Shanghai, China
| | - Ping Zhao
- Department of Cardiology, Luodian Hospital, Shanghai, China
| | - Xianwei Meng
- Department of Cardiology, Luodian Hospital, Shanghai, China
| | - Hong Jin
- Department of Cardiology, Luodian Hospital, Shanghai, China
| | - Baojuan Tuo
- Department of Internal Medicine, Yuepu Community Health Centre, Shanghai, China
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