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Yue Y, Lv W, Zhang L, Kang W. MiR-147b influences vascular smooth muscle cell proliferation and migration via targeting YY1 and modulating Wnt/β-catenin activities. Acta Biochim Biophys Sin (Shanghai) 2018; 50:905-913. [PMID: 30060075 DOI: 10.1093/abbs/gmy086] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Indexed: 01/06/2023] Open
Abstract
Cardiovascular disease is the leading cause of death worldwide. Dysregulation of microRNAs (miRNAs) has been found to be associated with cardiovascular diseases such as atherosclerosis. In the present study, we examined the role of miR-147b in the proliferation and migration of vascular smooth muscle cells (VSMCs). Quantitative real-time PCR was performed to determine the expression levels of miR-147b and Yin Yang 1 (YY1) mRNA. CCK-8, transwell migration and wound healing assays were used to determine cell proliferation and migration of VSMCs, respectively. Luciferase reporter assay confirmed the downstream target of miR-147b. The protein level of YY1 was measured by western blot analysis. Platelet-derived growth factor-bb (PDGF-bb) treatment promoted cell proliferation and increased miR-147b expression in VSMCs. Overexpression of miR-147b enhanced cell proliferation and migration of VSMCs, while knock-down of miR-147b suppressed cell proliferation and migration of VSMCs or PDGF-bb-treated VSMCs. Further, bioinformatics prediction and luciferase reporter assay showed that YY1 was a downstream target of miR-147b, and miR-147b negatively regulated the mRNA and protein expression of YY1 in VSMCs. Overexpression of YY1 inhibited cell proliferation and migration of VSMCs and attenuated the effects of miR-147b overexpression on cell proliferation and migration. In addition, overexpression of miR-147b increased the Wnt/β-catenin signaling activities in VSMCs. In conclusion, our results suggest that miR-147b plays important roles in the control of cell proliferation and migration of VSMCs possibly via targeting YY1.
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Affiliation(s)
- Yulun Yue
- Department of Clinical Laboratory, The Affiliated Baoji Hospital of Xi'an Medical University, Xi'an, China
| | - Wenyan Lv
- Department of Clinical Laboratory, The Affiliated Baoji Hospital of Xi'an Medical University, Xi'an, China
| | - Lin Zhang
- Department of Clinical Laboratory, The Affiliated Baoji Hospital of Xi'an Medical University, Xi'an, China
| | - Wei Kang
- Xi'an Tianbo Medical Laboratory, Xi'an, China
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52
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Yang S, Yin J, Hou X. Inhibition of miR-135b by SP-1 promotes hypoxia-induced vascular endothelial cell injury via HIF-1α. Exp Cell Res 2018; 370:31-38. [PMID: 29883713 DOI: 10.1016/j.yexcr.2018.06.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 05/22/2018] [Accepted: 06/04/2018] [Indexed: 12/24/2022]
Abstract
Myocardial hypoxia-induced endothelial cell apoptosis contributes to cardiac dysfunction, such as myocardial infarction (MI), myocardial ischemia, and heart failure. Thus, it is important to investigate the molecular mechanisms of vascular endothelial cells (VECs) during exposure to hypoxia. SP-1 is an important regulator of cytokines associated with cell functions. We found that SP-1 expression increased in human umbilical vein endothelial cells (HUVECs) exposed to hypoxia by western blot. Then the SP-1 siRNA was transfected into HUVECs under hypoxic condition. MTT assay showed that hypoxia reduced the cell proliferation, but SP-1 siRNA reversed that. Transfection with si-SP-1 also reversed cell apoptosis and reactive oxygen species (ROS) production increased by hypoxia treatment. Moreover, inflammatory phenotype were increased in hypoxia induced HUVECs, including ICAM-1,VCAM-1 levels as well as TNFα, IL-6 and IL-1β secretion, and the si-SP-1 also reversed this effect of hypoxia. Additionally, si-SP-1 increased expression of miR-135b and reduced expression of hypoxia-inducible factor 1-α (HIF-1α), which is the target gene of miR-135b. To investigate the underlying mechanism of SP-1 on hypoxia induced HUVECs injury, the anti-miR-135b or HIF-1α agonist (CoCl2) were used. Finally, the result indicated that both anti-miR-135b or CoCl2 treatment reversed the effects of SP-1 siRNA under hypoxia. In conclusion, the SP-1/miR-135b/HIF-1α axis may play a critical role in hypoxia-induced vascular endothelial injury. Our study thus provides novel insights into the role of this transcription factor and miRNAs in the pathogenesis of hypoxia-induced cardiac dysfunctions.
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Affiliation(s)
- Songbai Yang
- Department of Vascular surgery, China-Japan Union Hospital, Jilin University, Changchun, 130000 Jilin, China
| | - Jian Yin
- Department of Vascular surgery, China-Japan Union Hospital, Jilin University, Changchun, 130000 Jilin, China
| | - Xuhui Hou
- Department of Vascular surgery, China-Japan Union Hospital, Jilin University, Changchun, 130000 Jilin, China.
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53
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Shao L, Chen Z, Soutto M, Zhu S, Lu H, Romero-Gallo J, Peek R, Zhang S, El-Rifai W. Helicobacter pylori-induced miR-135b-5p promotes cisplatin resistance in gastric cancer. FASEB J 2018; 33:264-274. [PMID: 29985646 DOI: 10.1096/fj.201701456rr] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Helicobacter pylori infection is a major risk factor for the development of gastric cancer. Aberrant expression of microRNAs is strongly implicated in gastric tumorigenesis; however, their contribution in response to H. pylori infection has not been fully elucidated. In this study, we evaluated the expression of miR-135b-5p and its role in gastric cancer. We describe the overexpression of miR-135b-5p in human gastric cancer tissue samples compared with normal tissue samples. Furthermore, we found that miR-135b-5p is also up-regulated in gastric tumors from the trefoil factor 1-knockout mouse model. Infection with H. pylori induced the expression of miR-135b-5p in the in vitro and in vivo models. miR-135b-5p induction was mediated by NF-κB. Treatment of gastric cancer cells with TNF-α induced miR-135b-5p in a NF-κB-dependent manner. Mechanistically, we found that miR-135b-5p targets Krüppel-like factor 4 (KLF4) and binds to its 3' UTR, leading to reduced KLF4 expression. Functionally, high levels of miR-135b-5p suppress apoptosis and induce cisplatin resistance. Our results uncovered a mechanistic link between H. pylori infection and miR-135b-5p-KLF4, suggesting that targeting miR-135b-5p could be a potential therapeutic approach to circumvent resistance to cisplatin.-Shao, L., Chen, Z., Soutto, M., Zhu, S., Lu, H., Romero-Gallo, J., Peek, R., Zhang, S., El-Rifai, W. Helicobacter pylori-induced miR-135b-5p promotes cisplatin resistance in gastric cancer.
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Affiliation(s)
- Linlin Shao
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, Beijing, China.,Department of Veterans Affairs, Miami Healthcare System, Miami, Florida, USA
| | - Zheng Chen
- Department of Veterans Affairs, Miami Healthcare System, Miami, Florida, USA.,Department of Surgery, Sylvester Comprehensive Cancer Center, University of Miami, Miami, Florida, USA; and
| | - Mohammed Soutto
- Department of Veterans Affairs, Miami Healthcare System, Miami, Florida, USA
| | - Shoumin Zhu
- Department of Surgery, Sylvester Comprehensive Cancer Center, University of Miami, Miami, Florida, USA; and
| | - Heng Lu
- Department of Surgery, Sylvester Comprehensive Cancer Center, University of Miami, Miami, Florida, USA; and
| | - Judith Romero-Gallo
- Division of Gastroenterology, Hematology, and Nutrition, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Richard Peek
- Division of Gastroenterology, Hematology, and Nutrition, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Shutian Zhang
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Wael El-Rifai
- Department of Veterans Affairs, Miami Healthcare System, Miami, Florida, USA.,Department of Surgery, Sylvester Comprehensive Cancer Center, University of Miami, Miami, Florida, USA; and
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54
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Li S, Sun W, Zheng H, Tian F. Microrna-145 accelerates the inflammatory reaction through activation of NF-κB signaling in atherosclerosis cells and mice. Biomed Pharmacother 2018; 103:851-857. [PMID: 29710501 DOI: 10.1016/j.biopha.2018.03.173] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 03/28/2018] [Accepted: 03/28/2018] [Indexed: 12/31/2022] Open
Abstract
Atherosclerosis (AS) is a chronic inflammation, which is a major cause of morbidity and mortality in the world. Accumulative evidences have demonstrated that miRNAs exert crucial roles in the development of AS. However, the effects of miR-145 and its underlying molecular mechanism remain incompletely clear. The aim of the present study is to explore the function of miR-145 in the occurrence and development of AS through investigating its role in inflammatory reactions. High-fat diet (HFD)-treated ApoE-/- mice were used as an in vivo model of atherosclerosis (AS). OxLDL-induced macrophages was employed as cell models of atherosclerosis. RT-PCR was used to evaluate the transfected efficiency of miR-145 mimic and inhibitor. RT-PCR and ELISA were performed to detect the expression of miR-145, and inflammatory cytokines such as tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), C-C motif chemokine ligand 2 (CCL-2), CCL-4 and CCL-7. Western blotting was used to evaluate the protein expression of nuclear factor κB (NF-κB) and its related proteins such as phosphorylated-signal transducer and activator of transcription 3 (p-STAT3), p-IκBα and acetylated p65 (ac-p65). Hematoxylin and eosin (H&E) staining were conducted to examine atherosclerotic lesion. Immunohistochemistry was carried out to detect the expression of α-smooth muscle Actin (α-SMA) and CD68. Luciferase reporter assay were carried out to examine the effect of miR-145 on the transcriptional activity of NF-κB. Our results showed that over-expression of miR-145 promoted the expression of IL-1β, TNF-α, CCL-2, CCL-4 and CCL-7 through promotion of NF-κB, p-IκBα, p-STAT3 and ac-p65 expression in vivo and in vitro. Besides, down-regulation of miR-145 expression relieved the aortic sinus lesion, increased the number of VSMCs and decreased the number of macrophages. In conclusion, our study demonstrated that miR-145 accelerated the inflammatory reaction through activation of NF-κB signaling in AS.
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Affiliation(s)
- Sheng Li
- Department of Cardiology, Jining No. 1 People's Hospital, Jining City, Shandong Province, 272000, China
| | - Wenlei Sun
- Department of Cardiology, Jining No. 1 People's Hospital, Jining City, Shandong Province, 272000, China
| | - Hongjian Zheng
- Department of Cardiology, Jining No. 1 People's Hospital, Jining City, Shandong Province, 272000, China
| | - Feifei Tian
- Department of Cardiology, Jining No. 1 People's Hospital, Jining City, Shandong Province, 272000, China.
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55
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Varghese JF, Patel R, Yadav UCS. Novel Insights in the Metabolic Syndrome-induced Oxidative Stress and Inflammation-mediated Atherosclerosis. Curr Cardiol Rev 2018; 14:4-14. [PMID: 28990536 PMCID: PMC5872260 DOI: 10.2174/1573403x13666171009112250] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 09/09/2017] [Accepted: 09/28/2017] [Indexed: 02/06/2023] Open
Abstract
Context: Atherosclerosis is a progressive pathological process and a leading cause of mor-tality worldwide. Clinical research and epidemiological studies state that atherosclerosis is caused by an amalgamation of metabolic and inflammatory deregulation involving three important pathological events including Endothelial Dysfunction (ED), Foam Cell Formation (FCF), and Vascular Smooth Muscle Cells (VSMCs) proliferation and migration. Objectives: Research in recent years has identified Metabolic Syndrome (MS), which involves factors such as obesity, insulin resistance, dyslipidemia and diabetes, to be responsible for the pathophysiol-ogy of atherosclerosis. These factors elevate oxidative stress and inflammation-induced key signalling molecules and various microRNAs (miRs). In present study, we have reviewed recently identified molecular targets in the pathophysiology of atherosclerosis. Methods: Scientific literature obtained from databases such as university library, PubMed and Google along with evidences from published experimental work in relevant journals has been sum-marized in this review article. Results: The molecular events and cell signalling implicated in atherogenic processes of ED, FCF and VSMCs hyperplasia are sequential and progressive, and involve cross talks at many levels. Specific molecules such as transcription factors, inflammatory cytokines and chemokines and miRs have been identified playing crucial role in most of the events leading to atherosclerosis. Conclusion: Studies associated with MS induced oxidative stress- and inflammation- mediated sig-nalling pathways along with critical miRs help in better understanding of the pathophysiology of ath-erosclerosis. Several key molecules discussed in this review could be potent target for the prevention and treatment of atherosclerosis.
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Affiliation(s)
- Johnna F Varghese
- School of Life Sciences, Central University of Gujarat, Gandhinagar, Gujarat - 382030, India
| | - Rohit Patel
- School of Life Sciences, Central University of Gujarat, Gandhinagar, Gujarat - 382030, India
| | - Umesh C S Yadav
- School of Life Sciences, Central University of Gujarat, Gandhinagar, Gujarat - 382030, India
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56
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Wei J, Zhang Y, Li Z, Wang X, Chen L, Du J, Liu J, Liu J, Hou Y. GCH1 attenuates cardiac autonomic nervous remodeling in canines with atrial-tachypacing via tetrahydrobiopterin pathway regulated by microRNA-206. Pacing Clin Electrophysiol 2018; 41:459-471. [PMID: 29436714 DOI: 10.1111/pace.13289] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 01/04/2018] [Accepted: 01/15/2018] [Indexed: 12/22/2022]
Abstract
BACKGROUND/AIMS Cardiac autonomic nerve remodeling (ANR) is an important mechanism of atrial fibrillation (AF). GTP cyclohydrolase I, encoded by GCH1, is the rate-limiting enzyme in de novo synthesis of tetrahydrobiopterin (BH4), an essential cofactor for nitric oxide (NO) synthesis. Previous studies reported that increased BH4 and NO content negatively regulated nerve regeneration. This study investigated the effects of GCH1 on ANR via BH4 pathway, regulated by microRNA-206 (miR-206). METHODS AND RESULTS In canines, atrial tachypacing (A-TP), together with miR-206 overexpression, increased PGP9.5 level and inhibited GCH1 expression by quantitative real-time polymerase chain reaction and western blot analysis. GCH1 was validated to be a direct target of miR-206 by luciferase assays. Meanwhile, miR-206 overexpression by lentiviruses infection into right superior pulmonary vein fat pad decreased GCH1 expression to ∼40% and further reduced BH4 and NO content compared with the control canines. After infection of GCH1 overexpression lentiviruses for two weeks, atrial effective refractory period was increased compared with the control group (105.8 ± 1.537 ms vs 99.17 ± 2.007 ms, P < 0.05). Moreover, GCH1 overexpression attenuated canines' atrial PGP9.5 level to ∼56% of the controls. In myocardial cells, transfection of GCH1 overexpression lentiviruses also decreased PGP9.5 expression to 26% of the control group. In patients, plasma was collected and miR-206 expression was upregulated in AF patients (n = 18) than the controls (n = 12). CONCLUSIONS Our findings suggested that GCH1 downregulation exacerbated ANR by decreasing atrial BH4 and NO content modulated by miR-206 in A-TP canines. This indicates that GCH1 may prevent the initiation of AF through inhibiting ANR.
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Affiliation(s)
- Jinqiu Wei
- Department of Examination Center, Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Yujiao Zhang
- Department of Cardiology, Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Zhan Li
- Department of Cardiology, Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Ximin Wang
- Department of Cardiology, Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Linlin Chen
- Department of Special Examination, Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Juanjuan Du
- Department of Cardiology, Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Jing Liu
- Medical Research Center, Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Ju Liu
- Medical Research Center, Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Yinglong Hou
- Department of Cardiology, Shandong Provincial Qianfoshan Hospital, Jinan, China
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57
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Li P, Fan JB, Gao Y, Zhang M, Zhang L, Yang N, Zhao X. miR-135b-5p inhibits LPS-induced TNFα production via silencing AMPK phosphatase Ppm1e. Oncotarget 2018; 7:77978-77986. [PMID: 27793001 PMCID: PMC5363637 DOI: 10.18632/oncotarget.12866] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 10/05/2016] [Indexed: 12/13/2022] Open
Abstract
AMPK activation in monocytes could suppress lipopolysaccharide (LPS)-induced tissue-damaging TNFa production. We are set to provoke AMPK activation via microRNA (“miRNA”) downregulating its phosphatase Ppm1e. In human U937 and THP-1 monocytes, forced expression of microRNA-135b-5p (“miR-135b-5p”) downregulated Ppm1e and activated AMPK signaling. Further, LPS-induced TNFα production in above cells was dramatically attenuated. Ppm1e shRNA knockdown in U937 cells also activated AMPK and inhibited TNFα production by LPS. AMPK activation is required for miR-135b-induced actions in monocytes, AMPKα shRNA knockdown or T172A dominant negative mutation almost abolished miR-135b-5p's suppression on LPS-induced TNFα production. Significantly, miR-135b-5p inhibited LPS-induced reactive oxygen species (ROS) production, NFκB activation and TNFα mRNA expression in human macrophages. AMPKα knockdown or mutation again abolished above actions by miR-135b-5p. We conclude that miR-135b-5p expression downregulates Ppm1e to activate AMPK signaling, which inhibits LPS-induced TNFα production via suppressing ROS production and NFκB activation.
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Affiliation(s)
- Ping Li
- Department of Emergency, The Second Affiliated Hospital of Xi'an Jiao Tong University, Xi'an, China
| | - Jian-Bo Fan
- Department of Orthopaedics, The Second Affiliated Hospital of Nantong University, Nantong, China
| | - Yanxia Gao
- Department of Emergency, The Second Affiliated Hospital of Xi'an Jiao Tong University, Xi'an, China
| | - Ming Zhang
- Department of Emergency, The Second Affiliated Hospital of Xi'an Jiao Tong University, Xi'an, China
| | - Li Zhang
- Department of Emergency, The Second Affiliated Hospital of Xi'an Jiao Tong University, Xi'an, China
| | - Ning Yang
- Department of Emergency, The Second Affiliated Hospital of Xi'an Jiao Tong University, Xi'an, China
| | - Xiaojing Zhao
- Department of Emergency, The Second Affiliated Hospital of Xi'an Jiao Tong University, Xi'an, China
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58
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Li ZW, Zhu YR, Zhou XZ, Zhuo BB, Wang XD. microRNA-135b expression silences Ppm1e to provoke AMPK activation and inhibit osteoblastoma cell proliferation. Oncotarget 2018; 8:26424-26433. [PMID: 28460435 PMCID: PMC5432269 DOI: 10.18632/oncotarget.15477] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 02/08/2017] [Indexed: 12/25/2022] Open
Abstract
Forced-activation of AMP-activated protein kinase (AMPK) can possibly inhibit osteoblastoma cells. Here, we aim to provoke AMPK activation via microRNA silencing its phosphatase Ppm1e (protein phosphatase Mg2+/Mn2+-dependent 1e). We showed that microRNA-135b-5p (“miR-135b-5p”), the anti-Ppm1e microRNA, was significantly downregulated in human osteoblastoma tissues. It was correlated with Ppm1e upregulation and AMPKα1 de-phosphorylation. Forced-expression of miR-135b-5p in human osteoblastoma cells (MG-63 and U2OS lines) silenced Ppm1e, and induced a profound AMPKα1 phosphorylation (at Thr-172). Osteoblastoma cell proliferation was inhibited after miR-135b-5p expression. Intriguingly, Ppm1e shRNA knockdown similarly induced AMPKα1 phosphorylation, causing osteoblastoma cell proliferation. Reversely, AMPKα1 shRNA knockdown or dominant negative mutation almost abolished miR-135b-5p's actions in osteoblastoma cells. Further in vivo studies demonstrated that U2OS tumor growth in mice was dramatically inhibited after expressing miR-135b-5p or Ppm1e shRNA. Together, our results suggest that miR-135b-induced Ppm1e silence induces AMPK activation to inhibit osteoblastoma cell proliferation.
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Affiliation(s)
- Zheng-Wei Li
- The Center of Diagnosis and Treatment for Children's Bone Diseases, The Children's Hospital Affiliated to Soochow University, Suzhou, China
| | - Yun-Rong Zhu
- Department of Orthopedics, The Affiliated Jiangyin Hospital of Medical College of Southeast University, Jiangyin City, China
| | - Xiao-Zhong Zhou
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, China.,Department of Orthopedics, The First People's Hospital of SuQian, SuQian, China
| | - Bao-Biao Zhuo
- The Center of Diagnosis and Treatment for Children's Bone Diseases, The Children's Hospital Affiliated to Soochow University, Suzhou, China
| | - Xiao-Dong Wang
- The Center of Diagnosis and Treatment for Children's Bone Diseases, The Children's Hospital Affiliated to Soochow University, Suzhou, China
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59
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Identification of DNA-PKcs as a primary resistance factor of salinomycin in osteosarcoma cells. Oncotarget 2018; 7:79417-79427. [PMID: 27765904 PMCID: PMC5346724 DOI: 10.18632/oncotarget.12712] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 09/26/2016] [Indexed: 01/01/2023] Open
Abstract
Malignant osteosarcoma (OS) is still a deadly disease for many affected patients. The search for the novel anti-OS agent is extremely urgent and important. Our previous study has proposed that salinomycin is a novel anti-OS agent. Here we characterized DNA-dependent protein kinase catalytic subunit (DNA-PKcs) as a primary salinomycin resistance factor in OS cells. DNA-PKcs inhibitors (NU7026, NU7441 and LY294002) or DNA-PKcs shRNA knockdown dramatically potentiated salinomycin-induced death and apoptosis of OS cells (U2OS and MG-63 lines). Further, forced-expression of microRNA-101 (“miR-101”) downregulated DNA-PKcs and augmented salinomycin's cytotoxicity against OS cells. Reversely, over-expression of DNA-PKcs in OS cells inhibited salinomycin's lethality. For the mechanism study, we show that DNA-PKcs is required for salinomycin-induced pro-survival autophagy activation. DNA-PKcs inhibition (by NU7441), shRNA knockdown or miR-101 expression inhibited salinomycin-induced Beclin-1 expression and autophagy induction. Meanwhile, knockdown of Beclin-1 by shRNA significantly sensitized salinomycin-induced OS cell lethality. In vivo, salinomycin administration suppressed U2OS xenograft tumor growth in severe combined immuno-deficient (SCID) mice, and its anti-tumor activity was dramatically potentiated with co-administration of the DNA-PKcs inhibitor NU7026. Together, these results suggest that DNA-PKcs could be a primary resistance factor of salinomycin in OS cells. DNA-PKcs inhibition or silence may thus significantly increase salinomycin's sensitivity in OS cells.
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60
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Zhang BF, Jiang H, Chen J, Guo X, Hu Q, Yang S. KDM3A inhibition attenuates high concentration insulin‑induced vascular smooth muscle cell injury by suppressing MAPK/NF‑κB pathways. Int J Mol Med 2017; 41:1265-1274. [PMID: 29286083 PMCID: PMC5819917 DOI: 10.3892/ijmm.2017.3351] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 11/13/2017] [Indexed: 12/25/2022] Open
Abstract
Previous studies have indicated that lysine (K)-specific demethylase 3A (KDM3A) is associated with diverse diabetes-associated cardiovascular complications in response to high glucose levels. However, the effects of KDM3A on the pathological progression of cardiovascular injuries in response to high insulin levels remain unknown. The present study aimed to explore whether KDM3A knockdown may attenuate high insulin-induced vascular smooth muscle cell (VSMC) dysfunction, and to further investigate the underlying mechanisms. Primary VSMCs were isolated from the thoracic aorta of Sprague-Dawley rats. Lentiviral vectors encoding control-small interfering (si)RNA or KDM3A-siRNA were transduced into VSMCs for 72 h, and cells were subsequently incubated in medium containing 100 nM insulin for a further 5 days. Cellular proli feration, migration and apoptosis were measured by Cell Counting kit-8, Transwell chamber assay and flow cytometry, respectively. Reactive oxygen species (ROS) were detected using the dihydroethidium fluorescent probe. The mRNA expression levels of interleukin-6 and monocyte chemotactic protein-1 were measured by reverse transcription-quantitative polymerase chain reaction. Furthermore, the protein expression levels of KDM3A, mitogen-activated protein kinases (MAPKs), nuclear factor (NF)-κB/p65, B-cell lymphoma 2 (Bcl-2)-associated X protein and Bcl-2 were evaluated by western blotting. Lentivirus transduction with KDM3A-siRNA markedly reduced the elevated expression of KDM3A induced by high insulin stimulation in VSMCs. In addition, inhibition of KDM3A significantly ameliorated insulin-induced VSMC proliferation and migration, which was accompanied by decreased ROS levels, cell apoptosis and inflammatory cytokine levels. Furthermore, KDM3A gene silencing mitigated phosphorylation of MAPKs and NF-κB/p65 activation. In conclusion, KDM3A inhibition may exert numerous protective effects on high insulin-stimulated VSMCs, and the underlying mechanisms may be partly associated with inactivation of MAPK/NF-κB signaling pathways.
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Affiliation(s)
- Bo-Fang Zhang
- Department of Cardiology, Renmin Hospital of Wuhan University, Cardiovascular Research Institute, Wuhan University, Hubei Key Laboratory of Cardiology, Wuhan, Hubei 430060, P.R. China
| | - Hong Jiang
- Department of Cardiology, Renmin Hospital of Wuhan University, Cardiovascular Research Institute, Wuhan University, Hubei Key Laboratory of Cardiology, Wuhan, Hubei 430060, P.R. China
| | - Jing Chen
- Department of Cardiology, Renmin Hospital of Wuhan University, Cardiovascular Research Institute, Wuhan University, Hubei Key Laboratory of Cardiology, Wuhan, Hubei 430060, P.R. China
| | - Xin Guo
- Department of Cardiology, Renmin Hospital of Wuhan University, Cardiovascular Research Institute, Wuhan University, Hubei Key Laboratory of Cardiology, Wuhan, Hubei 430060, P.R. China
| | - Qi Hu
- Department of Cardiology, Renmin Hospital of Wuhan University, Cardiovascular Research Institute, Wuhan University, Hubei Key Laboratory of Cardiology, Wuhan, Hubei 430060, P.R. China
| | - Shuo Yang
- Department of Cardiology, Renmin Hospital of Wuhan University, Cardiovascular Research Institute, Wuhan University, Hubei Key Laboratory of Cardiology, Wuhan, Hubei 430060, P.R. China
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61
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Nanoudis S, Pikilidou M, Yavropoulou M, Zebekakis P. The Role of MicroRNAs in Arterial Stiffness and Arterial Calcification. An Update and Review of the Literature. Front Genet 2017; 8:209. [PMID: 29312437 PMCID: PMC5733083 DOI: 10.3389/fgene.2017.00209] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2017] [Accepted: 11/28/2017] [Indexed: 12/20/2022] Open
Abstract
Arterial stiffness is an independent risk factor for fatal and non-fatal cardiovascular events, such as systolic hypertension, coronary artery disease, stroke, and heart failure. Moreover it reflects arterial aging which in many cases does not coincide with chronological aging, a fact that is in large attributed to genetic factors. In addition to genetic factors, microRNAs (miRNAs) seem to largely affect arterial aging either by advancing or by regressing arterial stiffness. MiRNAs are small RNA molecules, ~22 nucleotides long that can negatively control their target gene expression posttranscriptionally. Pathways that affect main components of stiffness such as fibrosis and calcification seem to be influenced by up or downregulation of specific miRNAs. Identification of this aberrant production of miRNAs can help identify epigenetic changes that can be therapeutic targets for prevention and treatment of vascular diseases. The present review summarizes the specific role of the so far discovered miRNAs that are involved in pathways of arterial stiffness.
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Affiliation(s)
- Sideris Nanoudis
- Hypertension Excellence Center, 1st Department of Internal Medicine, AHEPA University Hospital, Thessaloniki, Greece
| | - Maria Pikilidou
- Hypertension Excellence Center, 1st Department of Internal Medicine, AHEPA University Hospital, Thessaloniki, Greece
| | - Maria Yavropoulou
- Division of Endocrinology and Metabolism, AHEPA University Hospital, Thessaloniki, Greece
| | - Pantelis Zebekakis
- Hypertension Excellence Center, 1st Department of Internal Medicine, AHEPA University Hospital, Thessaloniki, Greece
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Zhang Z, Che X, Yang N, Bai Z, Wu Y, Zhao L, Pei H. miR-135b-5p Promotes migration, invasion and EMT of pancreatic cancer cells by targeting NR3C2. Biomed Pharmacother 2017; 96:1341-1348. [PMID: 29196101 DOI: 10.1016/j.biopha.2017.11.074] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 11/13/2017] [Accepted: 11/13/2017] [Indexed: 12/27/2022] Open
Abstract
The exact mechanisms of metastasis for pancreatic cancer remain to be uncovered. This study aimed to elucidate the potential functional mechanism of miR-135b-5p in migration, invasion and epithelial-to-mesenchymal transition (EMT) of pancreatic cancer cells. By real-time PCR and analysis of GEO database, we determined the up-regulated expression of miR-135b-5p in pancreatic cancer tissues and cell lines. Clinically, highly expressed miR-135b-5p was closely related to advanced TNM stage, more lymph node metastasis, more distant metastasis and worse overall survival (OS) and disease-free survival (DFS). Functionally, Transwell assays indicated that miR-135b-5p was a promoter for migration and invasion of pancreatic cancer cells. Additionally, immunohistochemistry staining and Western blot showed that highly expressed miR-135b-5p accelerated EMT process of pancreatic cancer cells. Furthermore, a series of experiments and rescue experiments revealed that Nuclear Receptor Subfamily 3 Group C Member 2 (NR3C2) was the target of miR-135b-5p in pancreatic cancer cells, mediating the promotion effects of miR-135b-5p on the tumor cells migration, invasion and EMT. In conclusion, miR-135b-5p, maybe a novel therapeutic target for pancreatic cancer, promoted migration, invasion and EMT of pancreatic cancer cells by targeting NR3C2.
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Affiliation(s)
- Zhengliang Zhang
- Department of Emergency, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Xiangming Che
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Ni Yang
- Department of Emergency, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Zhenghai Bai
- Department of Emergency, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Yuan Wu
- Department of Emergency, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Li Zhao
- Department of Emergency, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Honghong Pei
- Department of Emergency, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China.
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Upregulation of miR-126-3p promotes human saphenous vein endothelial cell proliferation in vitro and prevents vein graft neointimal formation ex vivo and in vivo. Oncotarget 2017; 8:106790-106806. [PMID: 29290989 PMCID: PMC5739774 DOI: 10.18632/oncotarget.22365] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 08/27/2017] [Indexed: 11/25/2022] Open
Abstract
Poor long-term patency of vein grafts remains an obstacle in coronary artery bypass grafting (CABG) surgery using an autologous saphenous vein graft. Recent studies have revealed that miR-126-3p promotes vascular integrity and angiogenesis. We aimed to identify the role of miR-126-3p in the setting of vein graft disease and investigate the value of miR-126-3p agomir as a future gene therapy in vein graft failure. Expression analysis of circulating miR-126-3p in plasma from CABG patients established the basic clues that miR-126-3p participates in CABG. The in vitro results indicated that elevated miR-126-3p expression significantly improved proliferation and migration in human saphenous vein endothelial cells (HSVECs) by targeting sprouty-related protein-1 (SPRED-1) and phosphatidylinositol-3-kinase regulatory subunit 2 (PIK3R2), but not in human saphenous vein smooth muscle cells (HSVSMCs). Moreover, the therapeutic potential of miR-126-3p agomir was demonstrated in cultured human saphenous vein (HSV) ex vivo. Finally, local delivery of miR-126-3p agomir was confirmed to enhance reendothelialization and attenuate neointimal formation in a rat vein arterialization model. In conclusion, we provide evidence that upregulation of miR-126-3p by agomir possesses potential clinical value in the prevention and treatment of autologous vein graft restenosis in CABG.
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Zhang R, Sui L, Hong X, Yang M, Li W. MiR-448 promotes vascular smooth muscle cell proliferation and migration in through directly targeting MEF2C. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:22294-22300. [PMID: 28799067 DOI: 10.1007/s11356-017-9771-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 07/13/2017] [Indexed: 06/07/2023]
Abstract
Abnormal proliferation and migration of vascular smooth muscle cells (VSMCs) is a critical process in various cardiovascular diseases such as coronary artery disease (CAD), atherosclerosis, stroke, and hypertension. MicroRNAs (miRNAs) are small, short, and noncoding RNAs that inhibit gene expression through binding to the 3'-UTR (3' untranslated regions) of target gene mRNAs. We showed that the expression of miR-448 was upregulated in VSMCs from coronary atherosclerotic plaques compared with normal coronary artery tissues. We also found that PDGF-bb promoted VSMCs proliferation and could induce miR-448 expression. Ectopic miR-448 expression induced VSMCs proliferation. Overexpression of miR-448 induced ki-67 mRNA and protein expression. Moreover, we identified MEF2C was a direct target of miR-448 in VSMCs. Overexpression of miR-448 promoted VSMCs migration. Furthermore, overexpression of MEF2C decreased miR-448-induced VSMCs proliferation and migration. These evidences suggested that miR-448 played an important role in the proliferation and migration of VSMCs.
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Affiliation(s)
- Ruihong Zhang
- Department of Cardiovascular, the First Affiliated Hospital of Harbin Medical University, Harbin, 150001, People's Republic of China
| | - Li Sui
- Department of Emergency, the First Affiliated Hospital of Harbin Medical University, Harbin, 150001, People's Republic of China
| | - Xiaojian Hong
- Department of Cardiovascular, the First Affiliated Hospital of Harbin Medical University, Harbin, 150001, People's Republic of China
| | - Mao Yang
- Department of Cardiovascular, the Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, People's Republic of China
| | - Weimin Li
- Department of Cardiovascular, the First Affiliated Hospital of Harbin Medical University, Harbin, 150001, People's Republic of China.
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65
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Lin N, An Y. Blockade of 146b-5p promotes inflammation in atherosclerosis-associated foam cell formation by targeting TRAF6. Exp Ther Med 2017; 14:5087-5092. [PMID: 29201219 DOI: 10.3892/etm.2017.5121] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 06/22/2017] [Indexed: 12/12/2022] Open
Abstract
Atherosclerosis (AS) is a chronic inflammation in response to lipid accumulation. Increasing evidence has demonstrated that numerous microRNAs (miRs) have critical roles in inflammatory responses. A previous study suggested that miR-146b-5p is possibly associated with AS; however, its exact role has remained largely elusive. The present study aimed to investigate the potential role of miR-146b-5p in AS and to explore the underlying mechanism. Fist, the levels of miR-146b-5p were determined in foam cells and clinical specimens from patients with AS by reverse-transcription quantitative PCR. The role of miR-146b-5p in AS was then investigated by using miR-146b-5p inhibitor. The results demonstrated that the expression levels of miR-146b-5p were elevated in the lesions of patients with AS. In addition, the levels of miR-146b-5p in THP-1 cells stimulated with phorbol 12-myristate 13-acetate (100 nM) to induce their differentiation into macrophages were dose- and time-dependently elevated by oxidized low-density lipoprotein treatment applied for inducing foam cell formation. miR-146b-5p was also revealed to directly target tumor necrosis factor receptor-associated factor 6 (TRAF6), which functions as a signal transducer in the nuclear factor-κB (NF-κB) pathway. Furthermore, the present study reported for the first time that miR-146b-5p inhibition promotes the inflammatory response and enhances lipid uptake during foam cell formation. In conclusion, miR-146b-5p inhibition promoted chronic inflammation and had a detrimental role during AS-associated foam cell formation by targeting TRAF6.
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Affiliation(s)
- Nan Lin
- Department of Clinical Medicine, Medical College, Qingdao University, Qingdao, Shandong 266021, P.R. China.,Division of Cardiology, The Affiliated Hospital of Jining Medical University, Jining, Shandong 272100, P.R. China
| | - Yi An
- Division of Cardiology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266100, P.R. China
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Li M, Liu Q, Lei J, Wang X, Chen X, Ding Y. MiR-362-3p inhibits the proliferation and migration of vascular smooth muscle cells in atherosclerosis by targeting ADAMTS1. Biochem Biophys Res Commun 2017; 493:270-276. [PMID: 28890348 DOI: 10.1016/j.bbrc.2017.09.031] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 09/06/2017] [Indexed: 11/17/2022]
Abstract
Atherosclerosis is a progressive condition of the large arteries that can cause coronary artery disease (CAD). Growing amounts of evidence have indicated that microRNAs (miRNAs, miRs) can be used as diagnostic biomarkers in many cellular processes associated with CAD. MiR-362-3p has been implicated in many biological cellular functions. However, little is known about the role of miR-362-3p during atherosclerosis. In the present study, significant downregulation of miR-362-3p was observed in 110 atherosclerotic CAD patients and not in the 84 controls. The upregulation of miR-362-3p was demonstrated to inhibit vascular smooth muscle cell (VSMC) proliferation and migration, and impede the G1/S cell cycle transition. Bioinformatics analysis indicated that a disintegrin and metalloproteinase with thrombospondin motifs 1 (ADAMTS1) was a direct target of miR-362-3p. Subsequent experiments demonstrated that miR-362-3p binds to the 3'-untranslated region (UTR) of ADAMTS1 and decreases its levels of mRNA and protein expression. Overexpression of ADAMTS1 partially restored the miR-362-3p-mediated inhibition of VSMC proliferation, cell cycle, and migration. Upregulation of ADAMTS1 in plasma samples was detected in atherosclerotic CAD patients. Taken together, our findings suggested that miR-362-3p inhibits the proliferation and migration of VSMCs by directly targeting ADAMTS1, which might provide novel insight into the molecular mechanisms underlying the action of miR-362-3p in atherosclerosis.
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Affiliation(s)
- Meiling Li
- Department of Clinical Research Center, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Qing Liu
- Department of Clinical Research Center, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
| | - Jiayan Lei
- Department of Human Resources, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Xiaoliang Wang
- Department of Laboratory Medicine, University-Town Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Xiaoyun Chen
- Department of Clinical Research Center, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Yanhui Ding
- Department of Clinical Research Center, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
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Wu Z, He Y, Li D, Fang X, Shang T, Zhang H, Zheng X. Long noncoding RNA MEG3 suppressed endothelial cell proliferation and migration through regulating miR-21. Am J Transl Res 2017; 9:3326-3335. [PMID: 28804550 PMCID: PMC5553882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Accepted: 01/10/2017] [Indexed: 06/07/2023]
Abstract
Long non-coding RNAs (lncRNAs) act critical roles in many biological processes, including cell proliferation, apoptosis, development, invasion and migration. LncRNA maternally expressed gene 3 (MEG3) is found to be downregulated in several tumors; however, its role in the atherosclerosis is still unknown. In the present study, we demonstrated that MEG3 expression level was downregulated in the coronary artery disease (CAD) tissues compared to in the control tissues. We also showed that TNF-α enhanced EC cell proliferation. In addition, the expression of MEG3 was increased in EC after treated with TNF-α. Overexpression of MEG3 suppressed EC cell proliferation and inhibited the expression of cyclin D1, ki-67 and PCNA. Elevated expression of MEG3 suppressed the type I collagen, type V collagen and proteoglycan expression. In addition, we showed that elevated expression of MEG3 suppressed the miR-21 expression in the EC and promoted the expression of RhoB and PTEN, which were the direct target genes of miR-21. We demonstrated that miR-21 expression level was upregulated in the CAD tissues compared to in the control tissues. Moreover, miR-21 expression was reversely correlated with MEG3 expression in the CAD tissues. Overexpression of MEG3 suppressed EC cell proliferation and type I collagen, type V collagen and proteoglycan expression through inhibiting miR-21 expression. These results suggested that MEG3 played a critical role in regulating EC proliferation and type I collagen, type V collagen and proteoglycan expression partly through suppressing miR-21 expression.
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Affiliation(s)
- Ziheng Wu
- Department of Vascular Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhou 310000, Zhejiang, People’s Republic of China
| | - Yangyan He
- Department of Vascular Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhou 310000, Zhejiang, People’s Republic of China
| | - Donglin Li
- Department of Vascular Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhou 310000, Zhejiang, People’s Republic of China
| | - Xin Fang
- Department of Vascular Surgery, Hangzhou First People’s HospitalHangzhou 310000, People’s Republic of China
| | - Tao Shang
- Department of Vascular Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhou 310000, Zhejiang, People’s Republic of China
| | - Hongkun Zhang
- Department of Vascular Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhou 310000, Zhejiang, People’s Republic of China
| | - Xiangtao Zheng
- Department of Vascular Surgery, The First Affiliated Hospital of Wenzhou Medical UniversityWenzhou 325015, People’s Republic of China
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Exosomal microRNAs in giant panda (Ailuropoda melanoleuca) breast milk: potential maternal regulators for the development of newborn cubs. Sci Rep 2017; 7:3507. [PMID: 28615713 PMCID: PMC5471263 DOI: 10.1038/s41598-017-03707-8] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Accepted: 05/03/2017] [Indexed: 11/09/2022] Open
Abstract
The physiological role of miRNAs is widely understood to include fine-tuning the post-transcriptional regulation of a wide array of biological processes. Extensive studies have indicated that exosomal miRNAs in the bodily fluids of various organisms can be transferred between living cells for the delivery of gene silencing signals. Here, we illustrated the expression characteristics of exosomal miRNAs in giant panda breast milk during distinct lactation periods and highlighted the enrichment of immune- and development-related endogenous miRNAs in colostral and mature giant panda milk. These miRNAs are stable, even under certain harsh conditions, via the protection of extracellular vesicles. These findings indicate that breast milk may facilitate the dietary intake of maternal miRNAs by infants for the regulation of postnatal development. We also detected exogenous plant miRNAs from the primary food source of the giant panda (bamboo) in the exosomes of giant panda breast milk that were associated with regulatory roles in basic metabolism and neuron development. This result suggested that dietary plant miRNAs are absorbed by host cells and subsequently secreted into bodily fluids as potential cross-kingdom regulators. In conclusion, exosomal miRNAs in giant panda breast milk may be crucial maternal regulators for the development of intrinsic 'slink' newborn cubs.
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69
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Zhang X, Shi H, Wang Y, Hu J, Sun Z, Xu S. Down-regulation of hsa-miR-148b inhibits vascular smooth muscle cells proliferation and migration by directly targeting HSP90 in atherosclerosis. Am J Transl Res 2017; 9:629-637. [PMID: 28337290 PMCID: PMC5340697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Accepted: 01/27/2017] [Indexed: 06/06/2023]
Abstract
The abnormal proliferation and migration of vascular smooth muscle cells (VSMCs) are crucial pathological processes that are involved in atherosclerosis. Growing evidence suggests that microRNAs (miRNAs) play critical roles in VSMCs functions. Here, we analyzed the expression of four atherosclerosis-related miRNAs and found that hsa-miR-148b was significantly down-regulated in plaques from atherosclerotic patients compared to a healthy control group. The restoration of hsa-miR-148b function in cells transfected with a hsa-miR-148b mimicmarkedly inhibited VSMCs proliferation and migration compared to a hsa-miR-148b mimic control. Furthermore, we discovered that heat shock protein 90 (HSP90) was a direct target of hsa-miR-148b in VSMCs. Hsa-miR-148b suppressed HSP90 expression by directly binding its 3'-untranslated region (UTR). In addition, the expression of hsa-miR-148b was negatively correlated with the HSP90 mRNA levels in plaques of atherosclerotic patients. Interestingly, the overexpression of HSP90 partly abrogated the hsa-miR-148b-mediated inhibition of VSMCs proliferation and migration. Our study provides the first evidence that hsa-miR-148b has anti-proliferative and migratory functions by targeting HSP90 in VSMCs and may aidin the development of new biomarkers and potential therapeutic targets for atherosclerosis.
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Affiliation(s)
- Xinqi Zhang
- Department of Emergency, General Hospital of Jinan Military RegionJinan 250031, P. R. China
| | - Hua Shi
- Department of Urology, Guizhou Provincial People’s HospitalGuiyang 550002, P. R. China
| | - Yuanlin Wang
- Department of Urology, Guizhou Provincial People’s HospitalGuiyang 550002, P. R. China
| | - Jianxin Hu
- Department of Urology, Guizhou Provincial People’s HospitalGuiyang 550002, P. R. China
| | - Zhaolin Sun
- Department of Urology, Guizhou Provincial People’s HospitalGuiyang 550002, P. R. China
| | - Shuxiong Xu
- Department of Urology, Guizhou Provincial People’s HospitalGuiyang 550002, P. R. China
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Li K, Wang Y, Zhang A, Liu B, Jia L. miR-379 Inhibits Cell Proliferation, Invasion, and Migration of Vascular Smooth Muscle Cells by Targeting Insulin-Like Factor-1. Yonsei Med J 2017; 58:234-240. [PMID: 27873518 PMCID: PMC5122642 DOI: 10.3349/ymj.2017.58.1.234] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 05/29/2016] [Accepted: 05/30/2016] [Indexed: 01/12/2023] Open
Abstract
PURPOSE MicroRNAs are small non-coding RNAs that play important roles in vascular smooth muscle cell (VSMC) function. This study investigated the role of miR-379 on proliferation, invasion, and migration of VSMCs and explored underlying mechanisms thereof. MATERIALS AND METHODS MicroRNA, mRNA, and protein levels were determined by quantitative real-time PCR and western blot. The proliferative, invasive, and migratory abilities of VSMCs were measured by CCK-8, invasion, and wound healing assay, respectively. Luciferase reporter assay was used to confirm the target of miR-379. RESULTS Platelet-derived growth factor-bb was found to promote cell proliferation and suppress miR-379 expression in VSMCs. Functional assays demonstrated that miR-379 inhibited cell proliferation, cell invasion, and migration. Flow cytometry results further showed that miR-379 induced apoptosis in VSMCs. TargetScan analysis and luciferase report assay confirmed that insulin-like growth factor-1 (IGF-1) 3'UTR is a direct target of miR-379, and mRNA and protein levels of miR-379 and IGF-1 were inversely correlated. Rescue experiments showed that enforced expression of IGF-1 sufficiently overcomes the inhibitory effect of miR-379 on cell proliferation, invasion, and migration in VSMCs. CONCLUSION Our results suggest that miR-379 plays an important role in regulating VSMCs proliferation, invasion, and migration by targeting IGF-1.
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Affiliation(s)
- Kai Li
- Department of Cardiology, The First Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi Province, China
| | - Yong Wang
- Department of Cardiology, The First Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi Province, China.
| | - Anji Zhang
- Department of Cardiology, The First Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi Province, China
| | - Baixue Liu
- Department of Cardiology, The First Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi Province, China
| | - Li Jia
- Department of Cardiology, The First Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi Province, China
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Function, Role, and Clinical Application of MicroRNAs in Vascular Aging. BIOMED RESEARCH INTERNATIONAL 2016; 2016:6021394. [PMID: 28097140 PMCID: PMC5209603 DOI: 10.1155/2016/6021394] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Revised: 11/07/2016] [Accepted: 11/23/2016] [Indexed: 01/31/2023]
Abstract
Vascular aging, a specific type of organic aging, is related to age-dependent changes in the vasculature, including atherosclerotic plaques, arterial stiffness, fibrosis, and increased intimal thickening. Vascular aging could influence the threshold, process, and severity of various cardiovascular diseases, thus making it one of the most important risk factors in the high mortality of cardiovascular diseases. As endothelial cells (ECs) and vascular smooth muscle cells (VSMCs) are the main cell biological basis of these pathology changes of the vasculature, the structure and function of ECs and VSMCs play a key role in vascular aging. MicroRNAs (miRNAs), small noncoding RNAs, have been shown to regulate the expression of multiple messenger RNAs (mRNAs) posttranscriptionally, contributing to many crucial aspects of cell biology. Recently, miRNAs with functions associated with aging or aging-related diseases have been studied. In this review, we will summarize the reported role of miRNAs in the process of vascular aging with special emphasis on EC and VSMC functions. In addition, the potential application of miRNAs to clinical practice for the diagnosis and treatment of cardiovascular diseases will also be discussed.
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Gao Y, Peng J, Ren Z, He NY, Li Q, Zhao XS, Wang MM, Wen HY, Tang ZH, Jiang ZS, Wang GX, Liu LS. Functional regulatory roles of microRNAs in atherosclerosis. Clin Chim Acta 2016; 460:164-71. [DOI: 10.1016/j.cca.2016.06.044] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 06/29/2016] [Accepted: 06/30/2016] [Indexed: 01/24/2023]
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Chistiakov DA, Orekhov AN, Bobryshev YV. Cardiac-specific miRNA in cardiogenesis, heart function, and cardiac pathology (with focus on myocardial infarction). J Mol Cell Cardiol 2016; 94:107-121. [PMID: 27056419 DOI: 10.1016/j.yjmcc.2016.03.015] [Citation(s) in RCA: 198] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Revised: 02/09/2016] [Accepted: 03/24/2016] [Indexed: 12/21/2022]
Abstract
Cardiac miRNAs (miR-1, miR133a, miR-208a/b, and miR-499) are abundantly expressed in the myocardium. They play a central role in cardiogenesis, heart function and pathology. While miR-1 and miR-133a predominantly control early stages of cardiogenesis supporting commitment of cardiac-specific muscle lineage from embryonic stem cells and mesodermal precursors, miR-208 and miR-499 are involved in the late cardiogenic stages mediating differentiation of cardioblasts to cardiomyocytes and fast/slow muscle fiber specification. In the heart, miR-1/133a control cardiac conductance and automaticity by regulating all phases of the cardiac action potential. miR-208/499 located in introns of the heavy chain myosin genes regulate expression of sarcomeric contractile proteins. In cardiac pathology including myocardial infarction (MI), expression of cardiac miRNAs is markedly altered that leads to deleterious effects associated with heart wounding, arrhythmia, increased apoptosis, fibrosis, hypertrophy, and tissue remodeling. In acute MI, circulating levels of cardiac miRNAs are significantly elevated making them to be a promising diagnostic marker for early diagnosis of acute MI. Great cardiospecific capacity of these miRNAs is very helpful for enhancing regenerative properties and survival of stem cell and cardiac progenitor transplants and for reprogramming of mature non-cardiac cells to cardiomyocytes.
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Affiliation(s)
- Dimitry A Chistiakov
- Department of Molecular Genetic Diagnostics and Cell Biology, Division of Laboratory Medicine, Institute of Pediatrics, Research Center for Children's Health, 119991 Moscow, Russia
| | - Alexander N Orekhov
- Institute of General Pathology and Pathophysiology, Russian Academy of Sciences, Moscow 125315, Russia; Department of Biophysics, Biological Faculty, Moscow State University, Moscow 119991, Russia; Institute for Atherosclerosis Research, Skolkovo Innovative Center, Moscow 121609, Russia
| | - Yuri V Bobryshev
- Institute of General Pathology and Pathophysiology, Russian Academy of Sciences, Moscow 125315, Russia; Faculty of Medicine, School of Medical Sciences, University of New South Wales, Sydney, NSW 2052, Australia; School of Medicine, University of Western Sydney, Campbelltown, NSW 2560, Australia.
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74
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Yang ZM, Chen LH, Hong M, Chen YY, Yang XR, Tang SM, Yuan QF, He ZY, Chen WW. Serum MicroRNA Profiling and Bioinformatics of Patients with Spleen-Deficiency Syndrome. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2016; 2016:8726720. [PMID: 27994634 PMCID: PMC5141567 DOI: 10.1155/2016/8726720] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 09/08/2016] [Accepted: 10/05/2016] [Indexed: 01/22/2023]
Abstract
To investigate serum microRNA (miRNA) profile and bioinformatics of patients with spleen-deficiency syndrome (SDS) and explore pathogenesis of SDS patients from miRNA levels, 10 patients with type 2 diabetes mellitus (T2DM), within which 5 patients were with SDS and the remaining were with blood stasis syndrome (BSS), and 5 healthy volunteers were recruited. Serum miRNA profiles of SDS patients were identified by quantitative PCR array. Target prediction and functional annotation for miRNAs were performed by miRSystem database. The present study identified 11 candidate serum miRNAs for SDS patients, and their targets were significantly enriched in 18 KEGG pathways and 7 GO molecular functions. Those enriched KEGG pathways included (1) metabolisms of carbohydrate, protein, amino acid, and fatty acid, (2) signaling pathways of insulin, ErbB, chemokine, calcium, and type II diabetes mellitus, (3) invasions of bacterium, Escherichia coli, and Shigella (Shigellosis), and (4) endocytosis and phagocytosis. Those enriched GO molecular functions were mainly involved in transcription regulation and regulation of metabolism. Our findings might elucidate the pathogenesis of SDS patients with disorders of substance metabolism and hypoimmunity from miRNA levels, as well as providing some miRNA biomarkers for clinical syndrome differentiation of SDS.
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Affiliation(s)
- Ze-Min Yang
- School of Basic Courses, Guangdong Pharmaceutical University, No. 280 Waihuan Road East, Higher Education Mega Center, Panyu District, Guangzhou 510006, China
- *Ze-Min Yang:
| | - Long-Hui Chen
- Pi-Wei Institute, Guangzhou University of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou 510405, China
| | - Min Hong
- Department of Traditional Chinese Medicine, First Affiliated Hospital of Guangdong Pharmaceutical University, No. 19 Nonglinxia Road, Guangzhou 510080, China
| | - Ying-Yu Chen
- Department of Traditional Chinese Medicine, First Affiliated Hospital of Guangdong Pharmaceutical University, No. 19 Nonglinxia Road, Guangzhou 510080, China
| | - Xiao-Rong Yang
- Clinical Laboratory, First Affiliated Hospital of Guangdong Pharmaceutical University, No. 19 Nonglinxia Road, Guangzhou 510080, China
| | - Si-Meng Tang
- School of Basic Courses, Guangdong Pharmaceutical University, No. 280 Waihuan Road East, Higher Education Mega Center, Panyu District, Guangzhou 510006, China
| | - Qian-Fa Yuan
- School of Basic Courses, Guangdong Pharmaceutical University, No. 280 Waihuan Road East, Higher Education Mega Center, Panyu District, Guangzhou 510006, China
| | - Zhen-Yu He
- School of Basic Courses, Guangdong Pharmaceutical University, No. 280 Waihuan Road East, Higher Education Mega Center, Panyu District, Guangzhou 510006, China
| | - Wei-Wen Chen
- Pi-Wei Institute, Guangzhou University of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou 510405, China
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Role and Function of MicroRNAs in Extracellular Vesicles in Cardiovascular Biology. BIOMED RESEARCH INTERNATIONAL 2015; 2015:161393. [PMID: 26558258 PMCID: PMC4618108 DOI: 10.1155/2015/161393] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 09/07/2015] [Accepted: 09/15/2015] [Indexed: 01/08/2023]
Abstract
Intercellular communication mediated by extracellular vesicles is crucial for preserving vascular integrity and in the development of cardiovascular disease. Extracellular vesicles consist of apoptotic bodies, microvesicles, and exosomes that can be found in almost every fluid compartment of the body like blood, saliva, and urine. In the recent years, a lot of reports came up suggesting that major cardiovascular and metabolic pathologies like atherogenesis, heart failure, or diabetes are highly influenced by transfer of microRNAs via extracellular vesicles leading to altered protein expression and phenotypes of recipient cells. The following review will summarize the fast developing field of intercellular signaling in cardiovascular biology by microRNA-containing extracellular vesicles.
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