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Yang W, Wu Z, Cai S, Li Z, Wang W, Wu J, Luo H, Ye X. Tumor lymphangiogenesis index reveals the immune landscape and immunotherapy response in lung adenocarcinoma. Front Immunol 2024; 15:1354339. [PMID: 38638428 PMCID: PMC11024352 DOI: 10.3389/fimmu.2024.1354339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 03/25/2024] [Indexed: 04/20/2024] Open
Abstract
Background Lymphangiogenesis (LYM) has an important role in tumor progression and is strongly associated with tumor metastasis. However, the clinical application of LYM has not progressed as expected. The potential value of LYM needs to be further developed in lung adenocarcinoma (LUAD) patients. Methods The Sequencing data and clinical characteristics of LUAD patients were downloaded from The Cancer Genome Atlas and GEO databases. Multiple machine learning algorithms were used to screen feature genes and develop the LYM index. Immune cell infiltration, immune checkpoint expression, Tumor Immune Dysfunction and Exclusion (TIDE) algorithm and drug sensitivity analysis were used to explore the correlation of LYM index with immune profile and anti-tumor therapy. Results We screened four lymphangiogenic feature genes (PECAM1, TIMP1, CXCL5 and PDGFB) to construct LYM index based on multiple machine learning algorithms. We divided LUAD patients into the high LYM index group and the low LYM index group based on the median LYM index. LYM index is a risk factor for the prognosis of LUAD patients. In addition, there was a significant difference in immune profile between high LYM index and low LYM index groups. LUAD patients in the low LYM index group seemed to benefit more from immunotherapy based on the results of TIDE algorithm. Conclusion Overall, we confirmed that the LYM index is a prognostic risk factor and a valuable predictor of immunotherapy response in LUAD patients, which provides new evidence for the potential application of LYM.
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Affiliation(s)
- Weichang Yang
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
- Jiangxi Key Laboratory of Molecular Medicine, Nanchang, Jiangxi, China
| | - Zhijian Wu
- Department of Cardiology, The Second Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
| | - Shanshan Cai
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
| | - Zhouhua Li
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
| | - Wenjun Wang
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
| | - Juan Wu
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
| | - Hongdan Luo
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
| | - Xiaoqun Ye
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
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Zhang H, Bai Z, Zhu L, Liang Y, Fan X, Li J, Wen H, Shi T, Zhao Q, Wang Z. Hydrogen sulfide donors: Therapeutic potential in anti-atherosclerosis. Eur J Med Chem 2020; 205:112665. [DOI: 10.1016/j.ejmech.2020.112665] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 07/09/2020] [Accepted: 07/12/2020] [Indexed: 12/15/2022]
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Tseng CC, Wu LY, Tsai WC, Ou TT, Wu CC, Sung WY, Kuo PL, Yen JH. Differential Expression Profiles of the Transcriptome and miRNA Interactome in Synovial Fibroblasts of Rheumatoid Arthritis Revealed by Next Generation Sequencing. Diagnostics (Basel) 2019; 9:diagnostics9030098. [PMID: 31426562 PMCID: PMC6787660 DOI: 10.3390/diagnostics9030098] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 08/08/2019] [Accepted: 08/13/2019] [Indexed: 12/12/2022] Open
Abstract
Using next-generation sequencing to decipher the molecular mechanisms underlying aberrant rheumatoid arthritis synovial fibroblasts (RASF) activation, we performed transcriptome-wide RNA-seq and small RNA-seq on synovial fibroblasts from rheumatoid arthritis (RA) subject and normal donor. Differential expression of mRNA and miRNA was integrated with interaction analysis, functional annotation, regulatory network mapping and experimentally verified miRNA–target interaction data, further validated with microarray expression profiles. In this study, 3049 upregulated mRNA and 3552 downregulated mRNA, together with 50 upregulated miRNA and 35 downregulated miRNA in RASF were identified. Interaction analysis highlighted contribution of miRNA to altered transcriptome. Functional annotation revealed metabolic deregulation and oncogenic signatures of RASF. Regulatory network mapping identified downregulated FOXO1 as master transcription factor resulting in altered transcriptome of RASF. Differential expression in three miRNA and corresponding targets (hsa-miR-31-5p:WASF3, hsa-miR-132-3p:RB1, hsa-miR-29c-3p:COL1A1) were also validated. The interactions of these three miRNA–target genes were experimentally validated with past literature. Our transcriptomic and miRNA interactomic investigation identified gene signatures associated with RASF and revealed the involvement of transcription factors and miRNA in an altered transcriptome. These findings help facilitate our understanding of RA with the hope of serving as a springboard for further discoveries relating to the disease.
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Affiliation(s)
- Chia-Chun Tseng
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Internal Medicine, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung 80145, Taiwan
| | - Ling-Yu Wu
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Wen-Chan Tsai
- Division of Rheumatology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
| | - Tsan-Teng Ou
- Division of Rheumatology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
| | - Cheng-Chin Wu
- Division of Rheumatology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
| | - Wan-Yu Sung
- Division of Rheumatology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
| | - Po-Lin Kuo
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
- Institute of Biomedical Science, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan.
| | - Jeng-Hsien Yen
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
- Division of Rheumatology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan.
- Institute of Biomedical Science, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan.
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4
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Ye Q, Pang S, Zhang W, Guo X, Wang J, Zhang Y, Liu Y, Wu X, Jiang F. Therapeutic Targeting of RNA Polymerase I With the Small-Molecule CX-5461 for Prevention of Arterial Injury-Induced Neointimal Hyperplasia. Arterioscler Thromb Vasc Biol 2017; 37:476-484. [PMID: 28062495 DOI: 10.1161/atvbaha.116.308401] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 12/21/2016] [Indexed: 01/09/2023]
Abstract
OBJECTIVE RNA polymerase I (Pol I)-dependent rRNA synthesis is a determinant factor in ribosome biogenesis and thus cell proliferation. The importance of dysregulated Pol I activity in cardiovascular disease, however, has not been recognized. Here, we tested the hypothesis that specific inhibition of Pol I might prevent arterial injury-induced neointimal hyperplasia. APPROACH AND RESULTS CX-5461 is a novel selective Pol I inhibitor. Using this tool, we demonstrated that local inhibition of Pol I blocked balloon injury-induced neointima formation in rat carotid arteries in vivo. Neointimal development was associated with augmented rDNA transcriptional activity as evidenced by the increased phosphorylation of upstream binding factor-1. The beneficial effect of CX-5461 was mainly mediated by inducing G2/M cell cycle arrest of proliferating smooth muscle cells without obvious apoptosis. CX-5461 did not induce p53 stabilization but increased p53 phosphorylation and acetylation and activated the ataxia telangiectasia mutated/ataxia telangiectasia and Rad3-related (ATR) pathway. Inhibition of ATR, but not of ataxia telangiectasia mutated, abolished the cytostatic effect of CX-5461 and p53 phosphorylation. In addition, inhibition of p53 or knockdown of the p53 target GADD45 mimicked the effect of ATR inhibition. In vivo experiments showed that the levels of phospho-p53 and acetyl-p53, and activity of the ataxia telangiectasia mutated/ATR pathway were all augmented in CX-5461-treated vessels. CONCLUSIONS Pol I can be therapeutically targeted to inhibit the growth of neointima, supporting that Pol I is a novel biological target for preventing arterial restenosis. Mechanistically, Pol I inhibition elicited G2/M cell cycle arrest in smooth muscle cells via activation of the ATR-p53 axis.
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Affiliation(s)
- Qing Ye
- From the School of Basic Medicine, Shandong University, Jinan, Shandong Province, China (Q.Y., S.P., W.Z., X.G., J.W., Y.L., F.J.); Key Laboratory of Cardiovascular Remodeling and Function Research & The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, China (X.W.); and Department of Cardiology, Qing Dao Central Hospital, Qing Dao, Shandong Province, China (Y.Z.)
| | - Shu Pang
- From the School of Basic Medicine, Shandong University, Jinan, Shandong Province, China (Q.Y., S.P., W.Z., X.G., J.W., Y.L., F.J.); Key Laboratory of Cardiovascular Remodeling and Function Research & The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, China (X.W.); and Department of Cardiology, Qing Dao Central Hospital, Qing Dao, Shandong Province, China (Y.Z.)
| | - Wenjing Zhang
- From the School of Basic Medicine, Shandong University, Jinan, Shandong Province, China (Q.Y., S.P., W.Z., X.G., J.W., Y.L., F.J.); Key Laboratory of Cardiovascular Remodeling and Function Research & The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, China (X.W.); and Department of Cardiology, Qing Dao Central Hospital, Qing Dao, Shandong Province, China (Y.Z.)
| | - Xiaotong Guo
- From the School of Basic Medicine, Shandong University, Jinan, Shandong Province, China (Q.Y., S.P., W.Z., X.G., J.W., Y.L., F.J.); Key Laboratory of Cardiovascular Remodeling and Function Research & The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, China (X.W.); and Department of Cardiology, Qing Dao Central Hospital, Qing Dao, Shandong Province, China (Y.Z.)
| | - Jianli Wang
- From the School of Basic Medicine, Shandong University, Jinan, Shandong Province, China (Q.Y., S.P., W.Z., X.G., J.W., Y.L., F.J.); Key Laboratory of Cardiovascular Remodeling and Function Research & The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, China (X.W.); and Department of Cardiology, Qing Dao Central Hospital, Qing Dao, Shandong Province, China (Y.Z.)
| | - Yongtao Zhang
- From the School of Basic Medicine, Shandong University, Jinan, Shandong Province, China (Q.Y., S.P., W.Z., X.G., J.W., Y.L., F.J.); Key Laboratory of Cardiovascular Remodeling and Function Research & The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, China (X.W.); and Department of Cardiology, Qing Dao Central Hospital, Qing Dao, Shandong Province, China (Y.Z.)
| | - Yang Liu
- From the School of Basic Medicine, Shandong University, Jinan, Shandong Province, China (Q.Y., S.P., W.Z., X.G., J.W., Y.L., F.J.); Key Laboratory of Cardiovascular Remodeling and Function Research & The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, China (X.W.); and Department of Cardiology, Qing Dao Central Hospital, Qing Dao, Shandong Province, China (Y.Z.)
| | - Xiao Wu
- From the School of Basic Medicine, Shandong University, Jinan, Shandong Province, China (Q.Y., S.P., W.Z., X.G., J.W., Y.L., F.J.); Key Laboratory of Cardiovascular Remodeling and Function Research & The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, China (X.W.); and Department of Cardiology, Qing Dao Central Hospital, Qing Dao, Shandong Province, China (Y.Z.)
| | - Fan Jiang
- From the School of Basic Medicine, Shandong University, Jinan, Shandong Province, China (Q.Y., S.P., W.Z., X.G., J.W., Y.L., F.J.); Key Laboratory of Cardiovascular Remodeling and Function Research & The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, China (X.W.); and Department of Cardiology, Qing Dao Central Hospital, Qing Dao, Shandong Province, China (Y.Z.).
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5
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Cheung SH, Kwok WK, To KF, Lau JYW. Anti-atherogenic effect of hydrogen sulfide by over-expression of cystathionine gamma-lyase (CSE) gene. PLoS One 2014; 9:e113038. [PMID: 25397776 PMCID: PMC4232559 DOI: 10.1371/journal.pone.0113038] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2014] [Accepted: 10/17/2014] [Indexed: 12/17/2022] Open
Abstract
Hydrogen sulfide (H2S) is an important gaseous signaling molecule that functions in physiological and pathological conditions, such as atherosclerosis. H2S dilates vessels and therefore has been suggested as an anti-atherogenic molecule. Since cystathionine gamma-lyase (CSE) enzyme is responsible for producing H2S in the cardiovascular system, we hypothesized that up-regulation of CSE expression in vivo with preservation of H2S bioactivity can slow down plaque formation and, can serve as a therapeutic strategy against atherosclerosis. In this study, C57BL/6 wild type mice (WT), ApoE knockout mice (KO) and transgenic ApoE knockout mice overexpressing CSE (Tg/KO) at four weeks of age were weaned. They were then fed with either normal or atherogenic diet for 12 weeks. At week 16, serial plasma lipid levels, body weight, and blood pressure were measured prior to euthanization of the mice and the size of atherosclerotic plaques at their aortic roots was measured. Tg/KO mice showed an increase in endogenous H2S production in aortic tissue, reduced atherosclerotic plaque sizes and attenuation in plasma lipid profiles. We also showed an up-regulation in plasma glutathionine peroxidase that could indicate reduced oxidative stress. Furthermore, there was an increase in expression of p-p53 and down regulation of inflammatory nuclear factor-kappa B (NF-κB) in aorta. To conclude, alteration of endogenous H2S by CSE gene activation was associated with reduced atherosclerosis in ApoE-deficient mice. Up-regulation of CSE/H2S pathway attenuates atherosclerosis and this would be a potential target for therapeutic intervention against its formation.
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Affiliation(s)
- Sau Ha Cheung
- Department of Surgery, Faculty of Medicine, the Chinese University of Hong Kong, Hong Kong SAR, People's Republic of China
| | - Wai Kei Kwok
- Department of Surgery, Faculty of Medicine, the Chinese University of Hong Kong, Hong Kong SAR, People's Republic of China
| | - Ka Fai To
- Department of Anatomical and Cellular Pathology, Faculty of Medicine, the Chinese University of Hong Kong, Hong Kong SAR, People's Republic of China
| | - James Yun Wong Lau
- Department of Surgery, Faculty of Medicine, the Chinese University of Hong Kong, Hong Kong SAR, People's Republic of China
- * E-mail:
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6
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Pinkaew D, Le RJ, Chen Y, Eltorky M, Teng BB, Fujise K. Fortilin reduces apoptosis in macrophages and promotes atherosclerosis. Am J Physiol Heart Circ Physiol 2013; 305:H1519-29. [PMID: 24043250 DOI: 10.1152/ajpheart.00570.2013] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Atherosclerosis, a deadly disease insufficiently addressed by cholesterol-lowering drugs, needs new therapeutic strategies. Fortilin, a 172-amino acid multifunctional polypeptide, binds p53 and blocks its transcriptional activation of Bax, thereby exerting potent antiapoptotic activity. Although fortilin-overexpressing mice reportedly exhibit hypertension and accelerated atherosclerosis, it remains unknown if fortilin, not hypertension, facilitates atherosclerosis. Our objective was to test the hypothesis that fortilin in and of itself facilitates atherosclerosis by protecting macrophages against apoptosis. We generated fortilin-deficient (fortilin(+/-)) mice and wild-type counterparts (fortilin(+/+)) on a LDL receptor (Ldlr)(-/-) apolipoprotein B mRNA editing enzyme, catalytic polypeptide 1 (Apobec1)(-/-) hypercholesterolemic genetic background, incubated them for 10 mo on a normal chow diet, and assessed the degree and extent of atherosclerosis. Despite similar blood pressure and lipid profiles, fortilin(+/-) mice exhibited significantly less atherosclerosis in their aortae than their fortilin(+/+) littermate controls. Quantitative immunostaining and flow cytometry analyses showed that the atherosclerotic lesions of fortilin(+/-) mice contained fewer macrophages than those of fortilin(+/+) mice. In addition, there were more apoptotic cells in the intima of fortilin(+/-) mice than in the intima of fortilin(+/+) mice. Furthermore, peritoneal macrophages from fortilin(+/-) mice expressed more Bax and underwent increased apoptosis, both at the baseline level and in response to oxidized LDL. Finally, hypercholesterolemic sera from Ldlr(-/-)Apobec1(-/-) mice induced fortilin in peritoneal macrophages more robustly than sera from control mice. In conclusion, fortilin, induced in the proatherosclerotic microenvironment in macrophages, protects macrophages against Bax-induced apoptosis, allows them to propagate, and accelerates atherosclerosis. Anti-fortilin therapy thus may represent a promising next generation antiatherosclerotic therapeutic strategy.
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Affiliation(s)
- Decha Pinkaew
- Division of Cardiology, Department of Internal Medicine, University of Texas Medical Branch, Galveston, Texas
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7
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Xu L, Liu JT, Liu N, Lu PP, Pang XM. Effects of Panax notoginseng saponins on proliferation and apoptosis of vascular smooth muscle cells. JOURNAL OF ETHNOPHARMACOLOGY 2011; 137:226-230. [PMID: 21619919 DOI: 10.1016/j.jep.2011.05.020] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2010] [Revised: 05/10/2011] [Accepted: 05/11/2011] [Indexed: 05/30/2023]
Abstract
AIM OF THE STUDY Atherosclerosis is a common cardiovascular disease, and linked with the development of many cardiovascular complications, such as myocardial ischemia and stroke. Although pathogenesis of atherosclerosis is not completely elucidated, increasing evidence has demonstrated that abnormal proliferation of vascular smooth muscle cells (VSMCs) plays an important role in formation of atherosclerosis. Previous studies showed that saponins from Panax notoginseng (PNS) possess anti-atherosclerotic properties. However, the mechanism of PNS against atherosclerosis is not well understood. Therefore, the present study observed the effects of PNS on proliferation and apoptosis of VSMCs. MATERIALS AND METHODS Rat VSMCs were cultured, and platelet-derived growth factor (PDGF) was used to stimulate cell proliferation. The viability of VSMCs was assessed with the MTT method. VSMCs apoptosis was detected by flow cytometry. Expressions of apoptosis related protein p53, Bax, caspase-3 and Bcl-2 were determined using Western blot. RESULTS Pretreatment of the cells with PNS (200, 400, 800 μg/mL) significantly inhibited proliferation of PDGF-stimulated VSMCs, and induced apoptosis of the proliferated VSMCs in a concentration-dependent way. Western blot analysis showed that PNS upregulated expressions of pro-apoptotic protein p53, Bax and caspase-3, downregulated expression of anti-apoptotic protein Bcl-2, and enlarged Bax/Bcl-2 ratio in the proliferated VSMCs induced by PDGF. CONCLUSIONS This study demonstrates that PNS both inhibits VSMCs proliferation and induces VSMCs apoptosis through upregulating p53, Bax, caspase-3 expressions and downregulating Bcl-2 expression, which constitute the pharmacological basis of its anti-atherosclerotic action.
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MESH Headings
- Animals
- Apoptosis/drug effects
- Blotting, Western
- Cardiovascular Agents/isolation & purification
- Cardiovascular Agents/pharmacology
- Caspase 3/metabolism
- Cell Proliferation/drug effects
- Cell Survival/drug effects
- Cells, Cultured
- Dose-Response Relationship, Drug
- Flow Cytometry
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/pathology
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/metabolism
- Myocytes, Smooth Muscle/pathology
- Panax notoginseng/chemistry
- Plant Extracts/isolation & purification
- Plant Extracts/pharmacology
- Platelet-Derived Growth Factor/metabolism
- Proto-Oncogene Proteins c-bcl-2/metabolism
- Rats
- Rats, Sprague-Dawley
- Saponins/isolation & purification
- Saponins/pharmacology
- Time Factors
- Tumor Suppressor Protein p53/metabolism
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Affiliation(s)
- Li Xu
- Department of Pharmacology, Xi'an Jiaotong University School of Medicine, Xi'an 710061, China
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8
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Chen Y, Fujita T, Zhang D, Doan H, Pinkaew D, Liu Z, Wu J, Koide Y, Chiu A, Lin CCJ, Chang JY, Ruan KH, Fujise K. Physical and functional antagonism between tumor suppressor protein p53 and fortilin, an anti-apoptotic protein. J Biol Chem 2011; 286:32575-85. [PMID: 21795694 DOI: 10.1074/jbc.m110.217836] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Tumor suppressor protein p53, our most critical defense against tumorigenesis, can be made powerless by mechanisms such as mutations and inhibitors. Fortilin, a 172-amino acid polypeptide with potent anti-apoptotic activity, is up-regulated in many human malignancies. However, the exact mechanism by which fortilin exerts its anti-apoptotic activity remains unknown. Here we present significant insight. Fortilin binds specifically to the sequence-specific DNA binding domain of p53. The interaction of fortilin with p53 blocks p53-induced transcriptional activation of Bax. In addition, fortilin, but not a double point mutant of fortilin lacking p53 binding, inhibits p53-dependent apoptosis. Furthermore, cells with wild-type p53 and fortilin, but not cells with wild-type p53 and the double point mutant of fortilin lacking p53 binding, fail to induce Bax gene and apoptosis, leading to the formation of large tumor in athymic mice. Our results suggest that fortilin is a novel p53-interacting molecule and p53 inhibitor and that it is a logical molecular target in cancer therapy.
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Affiliation(s)
- Yanjie Chen
- Division of Cardiology, Department of Internal Medicine, University of Texas Medical Branch, Galveston, Texas 77555, USA
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9
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Pons D, Jukema JW. Epigenetic histone acetylation modifiers in vascular remodelling - new targets for therapy in cardiovascular disease. Neth Heart J 2011; 16:30-2. [PMID: 18612391 DOI: 10.1007/bf03086114] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Affiliation(s)
- D Pons
- Department of Cardiology, Leiden University Medical Centre, Leiden, and the Interuniversity Cardiology Institute of the Netherlands, Utrecht, the Netherlands
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10
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Wu Y, Han W, Liu GN. A DNA enzyme targeting Egr-1 inhibits rat vascular smooth muscle cell proliferation by down-regulation of cyclin D1 and TGF-β1. Braz J Med Biol Res 2010; 43:17-24. [PMID: 19936545 DOI: 10.1590/s0100-879x2009007500014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2009] [Accepted: 11/10/2009] [Indexed: 11/22/2022] Open
Affiliation(s)
- Y. Wu
- The First Affiliated Hospital of China Medical University, China
| | - W. Han
- The First Affiliated Hospital of China Medical University, China
| | - G.-N. Liu
- The First Affiliated Hospital of China Medical University, China
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11
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Baskar R, Sparatore A, Del Soldato P, Moore PK. Effect of S-diclofenac, a novel hydrogen sulfide releasing derivative inhibit rat vascular smooth muscle cell proliferation. Eur J Pharmacol 2008; 594:1-8. [DOI: 10.1016/j.ejphar.2008.07.029] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2008] [Revised: 07/03/2008] [Accepted: 07/10/2008] [Indexed: 12/31/2022]
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12
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Pons D, de Vries FR, van den Elsen PJ, Heijmans BT, Quax PH, Jukema JW. Epigenetic histone acetylation modifiers in vascular remodelling: new targets for therapy in cardiovascular disease. Eur Heart J 2008; 30:266-77. [DOI: 10.1093/eurheartj/ehn603] [Citation(s) in RCA: 130] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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13
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Sedding DG, Homann M, Seay U, Tillmanns H, Preissner KT, Braun-Dullaeus RC. Calpain counteracts mechanosensitive apoptosis of vascular smooth muscle cells in vitro and in vivo. FASEB J 2007; 22:579-89. [PMID: 17846083 DOI: 10.1096/fj.07-8853com] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Mechanical forces contribute to vascular remodeling processes. Elevated mechanical stress causes apoptosis of vascular smooth muscle cells (VSMCs) within the media. This study examined the role of the cystein protease calpain in force-induced vascular cell apoptosis and its effect on injury-induced vascular remodeling processes. VSMCs were exposed to cyclic tensile force in vitro, which resulted in increased p53 protein expression and transcriptional activity as well as a significant increase of apoptotic VSMCs. Apoptosis was prevented by the p53 inhibitor pifithrin and by p53 antisense oligonucleotides, indicating dependency of force-induced apoptosis on p53. Simultaneously, calpain activity increased by mechanical stress. Prevention of calpain activation by calpeptin or antisense oligonucleotides augmented strain-induced p53 expression and transcriptional activity, resulting in a further increase of apoptotic rate. p53 protein was directly disintegrated by activated calpain. The in vivo relevance of the findings was tested: pharmacologic inhibition of initial calpain activation augmented early apoptosis of medial VSMCs 24 h after balloon injury in a p53-dependent manner but resulted in a marked increase in late neointima formation. We conclude that calpain counteracts mechanically induced excessive VSMC apoptosis through its p53-degrading properties, which identifies calpain as a key regulator of mechanosensitive remodeling processes of the vascular wall.
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MESH Headings
- Animals
- Apoptosis/drug effects
- Calpain/pharmacology
- Carotid Arteries/cytology
- Carotid Arteries/drug effects
- Carotid Arteries/metabolism
- Cells, Cultured
- Enzyme Activation
- Hydroxymethylglutaryl-CoA Reductase Inhibitors/metabolism
- Male
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/metabolism
- Myocytes, Smooth Muscle/cytology
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/metabolism
- Rats
- Rats, Sprague-Dawley
- Tumor Suppressor Protein p53/genetics
- Tumor Suppressor Protein p53/metabolism
- Up-Regulation
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Affiliation(s)
- Daniel G Sedding
- Internal Medicine/Cardiology, Dresden University of Technology, Fetscherstrasse 76, D-01307 Dresden, Germany
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Bonafé M, Salvioli S, Barbi C, Trapassi C, Tocco F, Storci G, Invidia L, Vannini I, Rossi M, Marzi E, Mishto M, Capri M, Olivieri F, Antonicelli R, Memo M, Uberti D, Nacmias B, Sorbi S, Monti D, Franceschi C. The different apoptotic potential of the p53 codon 72 alleles increases with age and modulates in vivo ischaemia-induced cell death. Cell Death Differ 2004; 11:962-73. [PMID: 15131588 DOI: 10.1038/sj.cdd.4401415] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
A common arginine to proline polymorphism is harboured at codon 72 of the human p53 gene. In this investigation, we found that fibroblasts and lymphocytes isolated from arginine allele homozygote centenarians and sexagenarians (Arg+) undergo an oxidative-stress-induced apoptosis at a higher extent than cells obtained from proline allele carriers (Pro+). At variance, the difference in apoptosis susceptibility between Arg+ and Pro+ is not significant when cells from 30-year-old people are studied. Further, we found that Arg+ and Pro+ cells from centenarians differ in the constitutive levels of p53 protein and p53/MDM2 complex, as well as in the levels of oxidative stress-induced p53/Bcl-xL complex and mitochondria-localised p53. Consistently, all these differences are less evident in cells from 30-year-old people. Finally, we investigated the in vivo functional relevance of the p53 codon 72 genotype in a group of old patients (66-99 years of age) affected by acute myocardial ischaemia, a clinical condition in which in vivo cell death occurs. We found that Arg+ patients show increased levels of Troponin I and CK-MB, two serum markers that correlate with the extent of the ischaemic damage in comparison to Pro+ patients. In conclusion, these data suggest that p53 codon 72 polymorphism contributes to a genetically determined variability in apoptotic susceptibility among old people, which has a potentially relevant role in the context of an age-related pathologic condition, such as myocardial ischaemia.
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Affiliation(s)
- M Bonafé
- Department of Experimental Pathology, University of Bologna, Bologna, Italy.
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Mnjoyan ZH, Fujise K. Profound negative regulatory effects by resveratrol on vascular smooth muscle cells: a role of p53–p21WAF1/CIP1 pathway. Biochem Biophys Res Commun 2003; 311:546-52. [PMID: 14592451 DOI: 10.1016/j.bbrc.2003.10.023] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
We investigated the role of resveratrol, a polyphenol rich in red wine, in cell cycle progression and apoptosis of vascular smooth muscle cells (VSMCs). Resveratrol inhibited the growth of human aortic VSMCs at concentrations as low as 1 microM. This was due to the profound dose-dependent inhibition of DNA synthesis by resveratrol. DNA synthesis was more effectively inhibited when cells were pretreated with resveratrol. Resveratrol caused a dose-dependent increase in intracellular p53 and p21(WAF1/CIP1) levels. At lower concentrations (6.25-12.5 microM), resveratrol effectively blocked cell cycle progression of serum-stimulated VSMCs without inducing apoptosis, while the higher concentration of resveratrol (25 microM) selectively induced apoptosis in the same VSMCs. Intriguingly, however, the same high concentration of resveratrol could not induce apoptosis in quiescent VSMCs. These differential biological effects of resveratrol on quiescent and proliferating VSMCs suggest that resveratrol may be capable of selectively eliminating abnormally proliferating VSMCs of the arterial walls in vivo.
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MESH Headings
- Aorta/anatomy & histology
- Aorta/drug effects
- Aorta/growth & development
- Aorta/metabolism
- Apoptosis/drug effects
- Cell Division/drug effects
- Cells, Cultured
- Cyclin-Dependent Kinase Inhibitor p21
- Cyclins/metabolism
- DNA Replication/drug effects
- Dose-Response Relationship, Drug
- Humans
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/growth & development
- Muscle, Smooth, Vascular/metabolism
- Resveratrol
- Stilbenes/metabolism
- Stilbenes/pharmacology
- Tumor Suppressor Protein p53/metabolism
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Affiliation(s)
- Zakar H Mnjoyan
- Research Center for Cardiovascular Diseases, Institute of Molecular Medicine for the Prevention of Human Diseases, The University of Texas Health Science Center at Houston, Houston, TX, USA
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