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Liang W, Fan Y, Lu H, Chang Z, Hu W, Sun J, Wang H, Zhu T, Wang J, Adili R, Garcia-Barrio MT, Holinstat M, Eitzman D, Zhang J, Chen YE. KLF11 (Krüppel-Like Factor 11) Inhibits Arterial Thrombosis via Suppression of Tissue Factor in the Vascular Wall. Arterioscler Thromb Vasc Biol 2020; 39:402-412. [PMID: 30602303 DOI: 10.1161/atvbaha.118.311612] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Objective- Mutations in Krüppel like factor-11 ( KLF11), a gene also known as maturity-onset diabetes mellitus of the young type 7, contribute to the development of diabetes mellitus. KLF11 has anti-inflammatory effects in endothelial cells and beneficial effects on stroke. However, the function of KLF11 in the cardiovascular system is not fully unraveled. In this study, we investigated the role of KLF11 in vascular smooth muscle cell biology and arterial thrombosis. Approach and Results- Using a ferric chloride-induced thrombosis model, we found that the occlusion time was significantly reduced in conventional Klf11 knockout mice, whereas bone marrow transplantation could not rescue this phenotype, suggesting that vascular KLF11 is critical for inhibition of arterial thrombosis. We further demonstrated that vascular smooth muscle cell-specific Klf11 knockout mice also exhibited significantly reduced occlusion time. The expression of tissue factor (encoded by the F3 gene), a main initiator of the coagulation cascade, was increased in the artery of Klf11 knockout mice, as determined by real-time quantitative polymerase chain reaction and immunofluorescence. Furthermore, vascular smooth muscle cells isolated from Klf11 knockout mouse aortas showed increased tissue factor expression, which was rescued by KLF11 overexpression. In human aortic smooth muscle cells, small interfering RNA-mediated knockdown of KLF11 increased tissue factor expression. Consistent results were observed on adenovirus-mediated overexpression of KLF11. Mechanistically, KLF11 downregulates F3 at the transcriptional level as determined by reporter and chromatin immunoprecipitation assays. Conclusions- Our data demonstrate that KLF11 is a novel transcriptional suppressor of F3 in vascular smooth muscle cells, constituting a potential molecular target for inhibition of arterial thrombosis.
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Affiliation(s)
- Wenying Liang
- From the Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor (W.L., Y.F., H.L., Z.C., W.H., J.S., H.W., T.Z., J.W., M.T.G.-B., D.E., J.Z., Y.E.C.)
| | - Yanbo Fan
- From the Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor (W.L., Y.F., H.L., Z.C., W.H., J.S., H.W., T.Z., J.W., M.T.G.-B., D.E., J.Z., Y.E.C.)
| | - Haocheng Lu
- From the Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor (W.L., Y.F., H.L., Z.C., W.H., J.S., H.W., T.Z., J.W., M.T.G.-B., D.E., J.Z., Y.E.C.)
| | - Ziyi Chang
- From the Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor (W.L., Y.F., H.L., Z.C., W.H., J.S., H.W., T.Z., J.W., M.T.G.-B., D.E., J.Z., Y.E.C.)
| | - Wenting Hu
- From the Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor (W.L., Y.F., H.L., Z.C., W.H., J.S., H.W., T.Z., J.W., M.T.G.-B., D.E., J.Z., Y.E.C.)
| | - Jinjian Sun
- From the Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor (W.L., Y.F., H.L., Z.C., W.H., J.S., H.W., T.Z., J.W., M.T.G.-B., D.E., J.Z., Y.E.C.)
| | - Huilun Wang
- From the Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor (W.L., Y.F., H.L., Z.C., W.H., J.S., H.W., T.Z., J.W., M.T.G.-B., D.E., J.Z., Y.E.C.)
| | - Tianqing Zhu
- From the Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor (W.L., Y.F., H.L., Z.C., W.H., J.S., H.W., T.Z., J.W., M.T.G.-B., D.E., J.Z., Y.E.C.)
| | - Jintao Wang
- From the Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor (W.L., Y.F., H.L., Z.C., W.H., J.S., H.W., T.Z., J.W., M.T.G.-B., D.E., J.Z., Y.E.C.)
| | - Reheman Adili
- Department of Pharmacology, University of Michigan, Ann Arbor (R.A., M.H.)
| | - Minerva T Garcia-Barrio
- From the Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor (W.L., Y.F., H.L., Z.C., W.H., J.S., H.W., T.Z., J.W., M.T.G.-B., D.E., J.Z., Y.E.C.)
| | - Michael Holinstat
- Department of Pharmacology, University of Michigan, Ann Arbor (R.A., M.H.)
| | - Daniel Eitzman
- From the Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor (W.L., Y.F., H.L., Z.C., W.H., J.S., H.W., T.Z., J.W., M.T.G.-B., D.E., J.Z., Y.E.C.)
| | - Jifeng Zhang
- From the Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor (W.L., Y.F., H.L., Z.C., W.H., J.S., H.W., T.Z., J.W., M.T.G.-B., D.E., J.Z., Y.E.C.)
| | - Y Eugene Chen
- From the Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor (W.L., Y.F., H.L., Z.C., W.H., J.S., H.W., T.Z., J.W., M.T.G.-B., D.E., J.Z., Y.E.C.)
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Pan Q, Liu H, Zheng C, Zhao Y, Liao X, Wang Y, Chen Y, Zhao B, Lazartigues E, Yang Y, Ma X. Microvesicles Derived from Inflammation-Challenged Endothelial Cells Modulate Vascular Smooth Muscle Cell Functions. Front Physiol 2017; 7:692. [PMID: 28127288 PMCID: PMC5226944 DOI: 10.3389/fphys.2016.00692] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 12/27/2016] [Indexed: 12/13/2022] Open
Abstract
Purpose: Microvesicles (MV) can modulate the function of recipient cells by transferring their contents. Our previous study highlighted that MV released from tumor necrosis factor-α (TNF-α) plus serum deprivation (SD)-stimulated endothelial progenitor cells, induce detrimental effects on endothelial cells. In this study, we investigated the potential effects of endothelial MV (EMV) on proliferation, migration, and apoptosis of human brain vascular smooth cells (HBVSMC). Methods: EMV were prepared from human brain microvascular endothelial cells (HBMEC) cultured in a TNF-α plus SD medium. RNase-EMV were made by treating EMV with RNase A for RNA depletion. The proliferation, apoptosis and migration abilities of HBVSMC were determined after co-culture with EMV or RNase-EMV. The Mek1/2 inhibitor, PD0325901, was used for pathway analysis. Western blot was used for analyzing the proteins of Mek1/2, Erk1/2, phosphorylation Erk1/2, activated caspase-3 and Bcl-2. The level of miR-146a-5p was measured by qRT-PCR. Results: (1) EMV significantly promoted the proliferation and migration of HBVSMC. The effects were accompanied by an increase in Mek1/2 and p-Erk1/2, which could be abolished by PD0325901; (2) EMV decreased the apoptotic rate of HBVSMC by approximately 35%, which was accompanied by cleaved caspase-3 down-regulation and Bcl-2 up-regulation; (3) EMV increased miR-146a-5p level in HBVSMC by about 2-folds; (4) RNase-treated EMV were less effective than EMV on HBVSMC activities and miR-146a-5p expression. Conclusion: EMV generated under inflammation challenge can modulate HBVSMC function and fate via their carried RNA. This is associated with activation of theMek1/2/Erk1/2 pathway and caspase-3/Bcl-2 regulation, during which miR-146a-5p may play an important role. The data suggest that EMV derived from inflammation-challenged endothelial cells are detrimental to HBVSMC homeostatic functions, highlighting potential novel therapeutic targets for vascular diseases.
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Affiliation(s)
- Qunwen Pan
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Institute of Neurology, Affiliated Hospital of Guangdong Medical University Zhanjiang, China
| | - Hua Liu
- College of Health Science, Wuhan Sports University Wuhan, China
| | - Chunyan Zheng
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Institute of Neurology, Affiliated Hospital of Guangdong Medical University Zhanjiang, China
| | - Yuhui Zhao
- Department of Neurology and Stroke Center, The First Affiliated Hospital, Sun Yat-Sen University Guangzhou, China
| | - Xiaorong Liao
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Institute of Neurology, Affiliated Hospital of Guangdong Medical University Zhanjiang, China
| | - Yan Wang
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Institute of Neurology, Affiliated Hospital of Guangdong Medical University Zhanjiang, China
| | - Yanfang Chen
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Institute of Neurology, Affiliated Hospital of Guangdong Medical UniversityZhanjiang, China; Department of Pharmacology and Toxicology, Boonshoft School of Medicine, Wright State UniversityDayton, OH, USA
| | - Bin Zhao
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Institute of Neurology, Affiliated Hospital of Guangdong Medical University Zhanjiang, China
| | - Eric Lazartigues
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences New Orleans, LA, USA
| | - Yi Yang
- College of Health Science, Wuhan Sports University Wuhan, China
| | - Xiaotang Ma
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Institute of Neurology, Affiliated Hospital of Guangdong Medical University Zhanjiang, China
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Chang X, Zhang B, Lihua L, Feng Z. T3 inhibits the calcification of vascular smooth muscle cells and the potential mechanism. Am J Transl Res 2016; 8:4694-4704. [PMID: 27904672 PMCID: PMC5126314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 11/02/2016] [Indexed: 06/06/2023]
Abstract
OBJECTIVE This study aimed to investigate the potential molecular mechanism underlying the T3 induced vascular calcification and phenotype transformation of vascular smooth muscle cells (VSMCs). METHODS Rat thoracic aortic smooth muscle cells (A7r5) were cultured in vitro and randomly assigned into normal control group, calcification group, T3 group and inhibitor group. RESULTS When compared with normal control group, the osteocalcin content, ALP activity, Osterix and Runx2 mRNA expression and OPN protein expression increased significantly (P<0.01), and the protein expression of SMα and SM22α reduced dramatically in A7r5 cells of calcification group (P<0.01). After T3 treatment, the osteocalcin content and ALP activity reduced markedly, mRNA expression of Osterix and Runx2 and OPN protein expression reduced significantly. However, MMI (inhibitor of T3) was able to block the above effects of T3. When compared with calcification group, Osterix and Runx2 mRNA expression and OPN protein expression increased markedly (P<0.01). In addition, the protein expression of ERK1/2, p-ERK, Akt and p-Akt increased significantly in calcification group. In the presence of integrin αvβ3/ERK blocker (PD98059) and/or PI3K/Akt antagonist (LY294002), T3 was still able to inhibit the calcification, and this effect was similar to that after treatment with inhibitors alone. Moreover, LY294002 had a better inhibitory effect as compared to PD98059. CONCLUSION T3 may act on PI3K/Akt signaling pathway to inhibit the phenotype transformation of VSMC, which then suppresses the calcium/phosphate induced calcification of rat VSMCs. Thus, T3 is an endogenous molecule that can protect the blood vessels against calcification.
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Affiliation(s)
- Xiaodan Chang
- Department of Neonatology, Affiliated Bayi Children’s Hospital, Clinical Medical College in PLA Army General Hospital, Southern Medical UniversityBeijing 100007, China
- Department of Neonatology, The Second Central Hospital of Baoding CityBaoding 072750, China
| | - Baohong Zhang
- Department of Pediatrics, The Hospital of Tsinghua UniversityBeijing 100084, China
| | - Li Lihua
- Department of Pediatrics, Beijing Luhe Hospital Affiliated to Capital Medical UniversityBeijing 101149, China
| | - Zhichun Feng
- Department of Neonatology, Affiliated Bayi Children’s Hospital, Clinical Medical College in PLA Army General Hospital, Southern Medical UniversityBeijing 100007, China
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