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Deng G, Zeng F, Su J, Zhao S, Hu R, Zhu W, Hu S, Chen X, Yin M. BET inhibitor suppresses melanoma progression via the noncanonical NF-κB/SPP1 pathway. Am J Cancer Res 2020; 10:11428-11443. [PMID: 33052224 PMCID: PMC7546000 DOI: 10.7150/thno.47432] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Accepted: 08/30/2020] [Indexed: 12/12/2022] Open
Abstract
Background: Bromodomain and extra-terminal domain (BET) inhibitors have shown profound efficacy against hematologic malignancies and solid tumors in preclinical studies. However, the underlying molecular mechanism in melanoma is not well understood. Here we identified secreted phosphoprotein 1 (SPP1) as a melanoma driver and a crucial target of BET inhibitors in melanoma. Methods: Bioinformatics analysis and meta-analysis were used to evaluate the SPP1 expression in normal tissues, primary melanoma, and metastatic melanoma. Real-time PCR (RT-PCR) and Western blotting were employed to quantify SPP1 expression in melanoma cells and tissues. Cell proliferation, wound healing, and Transwell assays were carried out to evaluate the effects of SPP1 and BET inhibitors in melanoma cells in vitro. A xenograft mouse model was used to investigate the effect of SPP1 and BET inhibitors on melanoma in vivo. Chromatin immunoprecipitation (ChIP) assay was performed to evaluate the regulatory mechanism of BET inhibitors on SPP1. Results: SPP1 was identified as a melanoma driver by bioinformatics analysis, and meta-analysis determined it to be a diagnostic and prognostic biomarker for melanoma. SPP1 overexpression was associated with poor melanoma prognosis, and silencing SPP1 suppressed melanoma cell proliferation, migration, and invasion. Through a pilot drug screen, we identified BET inhibitors as ideal therapeutic agents that suppressed SPP1 expression. Also, SPP1 overexpression could partially reverse the suppressive effect of BET inhibitors on melanoma. We further demonstrated that bromodomain-containing 4 (BRD4) regulated SPP1 expression. Notably, BRD4 did not bind directly to the SPP1 promoter but regulated SPP1 expression through NFKB2. Silencing of NFKB2 resembled the phenotype of BET inhibitors treatment and SPP1 silencing in melanoma. Conclusion: Our findings highlight SPP1 as an essential target of BET inhibitors and provide a novel mechanism by which BET inhibitors suppress melanoma progression via the noncanonical NF-κB/SPP1 pathway.
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Milocco A, Scuor N, Lughi V, Lamberti G, Barba AA, Divittorio R, Grassi G, Perkan A, Grassi M, Abrami M. Thermal gelation modeling of a pluronic‐alginate blend following coronary angioplasty. J Appl Polym Sci 2020. [DOI: 10.1002/app.48539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Alessio Milocco
- Department of Engineering and ArchitectureTrieste University, via Valerio 6, I‐34127 Trieste Italy
| | - Nicola Scuor
- Department of Engineering and ArchitectureTrieste University, via Valerio 6, I‐34127 Trieste Italy
| | - Vanni Lughi
- Department of Engineering and ArchitectureTrieste University, via Valerio 6, I‐34127 Trieste Italy
| | - Gaetano Lamberti
- Department of Industrial EngineeringUniversity of Salerno, Via Giovanni Paolo II, 132, I‐84084 Fisciano SA Italy
| | - Anna Angela Barba
- Department of PharmacySalerno University, Via Giovanni Paolo II, 132, I‐84084 Fisciano SA Italy
| | - Rosario Divittorio
- Department of Engineering and ArchitectureTrieste University, via Valerio 6, I‐34127 Trieste Italy
| | - Gabriele Grassi
- Department of Life SciencesCattinara University Hospital, Trieste University, Strada di Fiume 447, I‐34149 Trieste Italy
| | - Andrea Perkan
- Struttura Complessa di Cardiologia, Azienda per l'Assistenza Sanitaria n. 1 Triestina, Cattinara Hospital, Strada di Fiume 447, I‐34149 Trieste Italy
| | - Mario Grassi
- Department of Engineering and ArchitectureTrieste University, via Valerio 6, I‐34127 Trieste Italy
| | - Michela Abrami
- Department of Engineering and ArchitectureTrieste University, via Valerio 6, I‐34127 Trieste Italy
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Chen Y, Ou Y, Dong J, Yang G, Zeng Z, Liu Y, Liu B, Li W, He X, Lan T. Osteopontin promotes collagen I synthesis in hepatic stellate cells by miRNA-129-5p inhibition. Exp Cell Res 2017; 362:343-348. [PMID: 29196165 DOI: 10.1016/j.yexcr.2017.11.035] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 11/14/2017] [Accepted: 11/28/2017] [Indexed: 12/18/2022]
Abstract
Activation of hepatic stellate cells (HSCs) is an essential event in the initiation and progression of liver fibrosis. HSCs are believed to be the major source of collagen-producing myofibroblasts in fibrotic livers. A key feature in the pathogenesis of liver fibrosis is fibrillar Collagen I (Col 1) deposition. Osteopontin (OPN), an extracellular matrix (ECM) cytokine expressed in HSCs, could drive fibrogenesis by modulating the HSC pro-fibrogenic phenotype and Col 1 expression. Here, we aimed to investigate the molecular mechanism of OPN regulating the activation of HSCs. Our results showed that hepatic expression of OPN was increased in patients with liver fibrosis. In addition, hepatic OPN was positively correlated with Col 1 and α-SMA. Recombinant OPN (rOPN) upregulated Col 1 and α-SMA expression in LX-2 cells. However, OPN knockdown downregulated Col 1 expression. The 3'-UTR of the collagen 1 (Col 1) was identified to bind miR-129-5p. Transfection of miR-129-5p mimic in HSC resulted in a marked reduction of Col 1 expression. Conversely, a decrease in miR-129-5p in HSCs transfected by anti-sense miR-129-5p (AS-miR-129-5p) caused Col 1 upregulation. Furthermore, luciferase reporter assay showed that miR-129-5p directly target the 3'-UTR of Col1α1 mRNA via repressing its post-transcriptional activities. Finally, miR-129-5p level was decreased in fibrotic liver of human, and reduced by rOPN treatment. In contrast, miR-129-5p was induced in HSCs transfected by OPN siRNA. These data suggested that OPN induces Col 1 expression via suppression of miR-129-5p in HSCs.
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Affiliation(s)
- Yinghua Chen
- Organ Transplantation Center, the First Affiliat ed Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Yitao Ou
- Guangdong Pharmaceutical University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou 511436, China
| | - Jiale Dong
- Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Guizhi Yang
- Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Zhi Zeng
- Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Ying Liu
- Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Bing Liu
- Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Weidong Li
- Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Xiaoshun He
- Organ Transplantation Center, the First Affiliat ed Hospital of Sun Yat-sen University, Guangzhou 510080, China.
| | - Tian Lan
- Guangdong Pharmaceutical University, Guangzhou 510006, China.
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Cao C, Luo X, Ji X, Wang Y, Zhang Y, Zhang P, Zhong L. Osteopontin regulates the proliferation of rat aortic smooth muscle cells in response to gingipains treatment. Mol Cell Probes 2017; 33:51-56. [PMID: 28302392 DOI: 10.1016/j.mcp.2017.03.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2016] [Revised: 03/11/2017] [Accepted: 03/11/2017] [Indexed: 12/25/2022]
Abstract
OBJECTIVE The present study aimed to explore the possible effects of osteopontin (OPN) in the proliferation of rat aortic smooth muscle cells (RASMCs) stimulated by gingipains. METHODS The proliferation of RASMCs in response to active gingipains treatment was evaluated by CCK-8 assay. OPN siRNA was designed, constructed and transfected into RASMCs at different concentrations. The cell cycle of RASMCs was analyzed by flow cytometry. OPN, α-SMA and calponin expression were examined by real-time PCR and western blot analysis. RESULTS Gingipains promoted the proliferation of RASMCs and OPN expression. With siRNA-mediated OPN expression knockdown, the cell cycle of RASMCs was blocked in the G0/G1 phase. Furthermore, the expression of specific differentiation markers, α-SMA and calponin, also decreased. CONCLUSIONS These results demonstrate that OPN has an impact on the proliferation and differentiation of RASMCs stimulated by gingipains.
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Affiliation(s)
- Chong Cao
- Department of Periodontology, Caochong Dental Clinic, Urumqi 830054, China
| | - Xin Luo
- Department of Pharmacology, The Basic Medical Sciences College of Xinjiang Medical University, Urumqi 830054, China
| | - Xiaowei Ji
- Department of Periodontology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - Yao Wang
- Department of Stomatology, The Affiliated Hospital of Hangzhou Normal University, Hangzhou 310015, China
| | - Yuan Zhang
- Medical College of Hangzhou Normal University, Hangzhou 311121, China; Department of Stomatology, The Affiliated Hospital of Hangzhou Normal University, Hangzhou 310015, China
| | - Pengtao Zhang
- Medical College of Hangzhou Normal University, Hangzhou 311121, China; Department of Stomatology, The Affiliated Hospital of Hangzhou Normal University, Hangzhou 310015, China
| | - Liangjun Zhong
- Medical College of Hangzhou Normal University, Hangzhou 311121, China; Department of Stomatology, The Affiliated Hospital of Hangzhou Normal University, Hangzhou 310015, China.
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Jang MA, Lee SJ, Baek SE, Park SY, Choi YW, Kim CD. α-Iso-Cubebene Inhibits PDGF-Induced Vascular Smooth Muscle Cell Proliferation by Suppressing Osteopontin Expression. PLoS One 2017; 12:e0170699. [PMID: 28114367 PMCID: PMC5256966 DOI: 10.1371/journal.pone.0170699] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 01/09/2017] [Indexed: 12/31/2022] Open
Abstract
α-Iso-cubebene (ICB) is a dibenzocyclooctadiene lignin contained in Schisandra chinensis (SC), a well-known medicinal herb that ameliorates cardiovascular symptoms. Thus, we examined the effect of ICB on vascular smooth muscle cell (VSMC) proliferation, a key feature of diverse vascular diseases. When VSMCs primary cultured from rat thoracic aorta were stimulated with PDGF (1-10 ng/ml), cell proliferation and osteopontin (OPN) expression were concomitantly up-regulated, but these effects were attenuated when cells were treated with MPIIIB10, a neutralizing monoclonal antibody for OPN. In aortic tissues exposed to PDGF, sprouting VSMC numbers increased, which was attenuated in tissues from OPN-deficient mice. Furthermore, VSMC proliferation and OPN expression induced by PDGF were attenuated dose-dependently by ICB (10 or 30 μg/ml). Reporter assays conducted using OPN promoter-luciferase constructs showed that the promoter region 538-234 bp of the transcription start site was responsible for transcriptional activity enhancement by PDGF, which was significantly inhibited by ICB. Putative binding sites for AP-1 and C/EBPβ in the indicated promoter region were suggested by TF Search, and increased binding of AP-1 and C/EBPβ in PDGF-treated VSMCs was demonstrated using a ChIP assay. The increased bindings of AP-1 and C/EBPβ into OPN promoter were attenuated by ICB. Moreover, the PDGF-induced expression of OPN was markedly attenuated in VSMCs transfected with siRNA for AP-1 and C/EBPβ. These results indicate that ICB inhibit VSMC proliferation by inhibiting the AP-1 and C/EBPβ signaling pathways and thus downregulating OPN expression.
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Affiliation(s)
- Min A. Jang
- Department of Pharmacology, School of Medicine, Pusan National University, Gyeongnam, Republic of Korea
- Gene & Cell Therapy Research Center for Vessel-associated Diseases, Pusan National University, Gyeongnam, Republic of Korea
| | - Seung Jin Lee
- College of Pharmacy, Pusan National University, Busan, Republic of Korea
| | - Seung Eun Baek
- Department of Pharmacology, School of Medicine, Pusan National University, Gyeongnam, Republic of Korea
- Gene & Cell Therapy Research Center for Vessel-associated Diseases, Pusan National University, Gyeongnam, Republic of Korea
| | - So Youn Park
- Department of Pharmacology, School of Medicine, Pusan National University, Gyeongnam, Republic of Korea
- Gene & Cell Therapy Research Center for Vessel-associated Diseases, Pusan National University, Gyeongnam, Republic of Korea
| | - Young Whan Choi
- College of Natural Resources & Life Sciences, Pusan National University, Gyeongnam, Republic of Korea
| | - Chi Dae Kim
- Department of Pharmacology, School of Medicine, Pusan National University, Gyeongnam, Republic of Korea
- Gene & Cell Therapy Research Center for Vessel-associated Diseases, Pusan National University, Gyeongnam, Republic of Korea
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The inhibition of calpains ameliorates vascular restenosis through MMP2/TGF-β1 pathway. Sci Rep 2016; 6:29975. [PMID: 27453531 PMCID: PMC4958998 DOI: 10.1038/srep29975] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Accepted: 06/28/2016] [Indexed: 01/16/2023] Open
Abstract
Restenosis limits the efficacy of vascular percutaneous intervention, in which vascular smooth muscle cell (VSMC) proliferation and activation of inflammation are two primary causal factors. Calpains influence VSMC proliferation and collagen synthesis. However, the roles of calpastatin and calpains in vascular restenosis remain unclear. Here, restenosis was induced by ligating the left carotid artery, and VSMCs were pretreated with platelet-derived growth factor (PDGF)-BB. Adenovirus vector carrying MMP2 sequence and specific small interfering RNA against calpain-1/2 were introduced. Finally, restenosis enhanced the expression of calpain-1/2, but reduced calpastatin content. In calpastatin transgenic mice, lumen narrowing was attenuated gradually and peaked on days 14-21. Cell proliferation and migration as well as collagen synthesis were inhibited in transgenic mice, and expression of calpain-1/2 and MMP2/transforming growth factor-β1 (TGF-β1). Consistently, in VSMCs pretreated with PDGF-BB, calpastatin induction and calpains inhibition suppressed the proliferation and migration of VSMCs and collagen synthesis, and reduced expression of calpain-1/2 and MMP2/TGF-β1. Moreover, simvastatin improved restenosis indicators by suppressing the HIF-1α/calpains/MMP2/TGF-β1 pathway. However, MMP2 supplementation eliminated the vascular protection of calpastatin induction and simvastatin. Collectively, calpains inhibition plays crucial roles in vascular restenosis by preventing neointimal hyperplasia at the early stage via suppression of the MMP2/TGF-β1 pathway.
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Amin M, Pushpakumar S, Muradashvili N, Kundu S, Tyagi SC, Sen U. Regulation and involvement of matrix metalloproteinases in vascular diseases. FRONT BIOSCI-LANDMRK 2016; 21:89-118. [PMID: 26709763 PMCID: PMC5462461 DOI: 10.2741/4378] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Matrix metalloproteinases (MMPs) are a family of zinc dependent endopeptidases whose main function is to degrade and deposit structural proteins within the extracellular matrix (ECM). A dysregulation of MMPs is linked to vascular diseases. MMPs are classified into collagenases, gelatinases, membrane-type, metalloelastase, stromelysins, matrilysins, enamelysins, and unclassified subgroups. The production of MMPs is stimulated by factors such as oxidative stress, growth factors and inflammation which lead to its up- or down-regulation with subsequent ECM remodeling. Normally, excess activation of MMPs is controlled by their endogenous inhibitors, tissue inhibitors of metalloproteinases (TIMPs). An imbalance of MMPs and TIMPs has been implicated in hypertension, atherosclerotic plaque formation and instability, aortic aneurysms and varicose vein wall remodeling. Also, recent evidence suggests epigenetic regulation of some MMPs in angiogenesis and atherosclerosis. Over the years, pharmacological inhibitors of MMPs have been used to modify or prevent the development of the disease with some success. In this review, we discuss recent advances in MMP biology, and their involvement in the manifestation of vascular disease.
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Affiliation(s)
- Matthew Amin
- Department of Physiology and Biophysics, University of Louisville, School of Medicine, Louisville, KY-40202
| | - Sathnur Pushpakumar
- Department of Physiology and Biophysics, University of Louisville, School of Medicine, Louisville, KY-40202
| | - Nino Muradashvili
- Department of Physiology and Biophysics, University of Louisville, School of Medicine, Louisville, KY-40202
| | - Sourav Kundu
- Department of Physiology and Biophysics, University of Louisville, School of Medicine, Louisville, KY-40202
| | - Suresh C Tyagi
- Department of Physiology and Biophysics, University of Louisville, School of Medicine, Louisville, KY-40202
| | - Utpal Sen
- Department of Physiology and Biophysics, University of Louisville, School of Medicine, Louisville, KY-40202,
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Temporal regulation of venous extracellular matrix components during arteriovenous fistula maturation. J Vasc Access 2014; 16:93-106. [PMID: 25262757 DOI: 10.5301/jva.5000290] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/28/2014] [Indexed: 01/08/2023] Open
Abstract
PURPOSE The venous limb of arteriovenous fistulae (AVF) adapts to the arterial environment by dilation and wall thickening; however, the temporal regulation of the expression of extracellular matrix (ECM) components in the venous limb of the maturing AVF has not been well characterized. We used a murine model of AVF maturation that recapitulates human AVF maturation to determine the temporal pattern of expression of these ECM components. METHODS Aortocaval fistulae were created in C57BL/6J mice and the venous limb was analyzed on postoperative days 1, 3, 7, 21, and 42. A gene microarray analysis was performed on day 7; results were confirmed by qPCR, histology, and immunohistochemistry. Proteases, protease inhibitors, collagens, glycoproteins, and other non-collagenous proteins were characterized. RESULTS The maturing AVF has increased expression of many ECM components, including increased collagen and elastin. Matrix metalloproteinases (MMPs) and tissue inhibitor of metalloproteinase 1 (TIMP1) showed increased mRNA and protein expression during the first 7 days of maturation. Increased collagen and elastin expression was also significant at day 7. Expression of structural proteins was increased later during AVF maturation. Osteopontin (OPN) expression was increased at day 1 and sustained during AVF maturation. CONCLUSIONS During AVF maturation, there is significantly increased expression of ECM components, each of which shows distinct temporal patterns during AVF maturation. Increased expression of regulatory proteins such as MMP and TIMP precedes increased expression of structural proteins such as collagen and elastin, potentially mediating a controlled pattern of ECM degradation and vessel remodeling without structural failure.
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