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Mariadoss AVA, Wang CZ. Exploring the Cellular and Molecular Mechanism of Discoidin Domain Receptors (DDR1 and DDR2) in Bone Formation, Regeneration, and Its Associated Disease Conditions. Int J Mol Sci 2023; 24:14895. [PMID: 37834343 PMCID: PMC10573612 DOI: 10.3390/ijms241914895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/01/2023] [Accepted: 10/02/2023] [Indexed: 10/15/2023] Open
Abstract
The tyrosine kinase family receptor of discoidin domain receptors (DDR1 and DDR2) is known to be activated by extracellular matrix collagen catalytic binding protein receptors. They play a remarkable role in cell proliferation, differentiation, migration, and cell survival. DDR1 of the DDR family regulates matrix-metalloproteinase, which causes extracellular matrix (ECM) remodeling and reconstruction during unbalanced homeostasis. Collagenous-rich DDR1 triggers the ECM of cartilage to regenerate the cartilage tissue in osteoarthritis (OA) and temporomandibular disorder (TMD). Moreover, DDR2 is prominently present in the fibroblasts, smooth muscle cells, myofibroblasts, and chondrocytes. It is crucial in generating and breaking collagen vital cellular activities like proliferation, differentiation, and adhesion mechanisms. However, the deficiency of DDR1 rather than DDR2 was detrimental in cases of OA and TMDs. DDR1 stimulated the ECM cartilage and improved bone regeneration. Based on the above information, we made an effort to outline the advancement of the utmost promising DDR1 and DDR2 regulation in bone and cartilage, also summarizing their structural, biological activity, and selectivity.
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Affiliation(s)
| | - Chau-Zen Wang
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan;
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Regeneration Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Physiology, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
- College of Professional Studies, National Pingtung University of Science and Technology, Pingtung 912301, Taiwan
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2
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Luangmonkong T, Parichatikanond W, Olinga P. Targeting collagen homeostasis for the treatment of liver fibrosis: Opportunities and challenges. Biochem Pharmacol 2023; 215:115740. [PMID: 37567319 DOI: 10.1016/j.bcp.2023.115740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 07/24/2023] [Accepted: 08/08/2023] [Indexed: 08/13/2023]
Abstract
Liver fibrosis is an excessive production, aberrant deposition, and deficit degradation of extracellular matrix (ECM). Patients with unresolved fibrosis ultimately undergo end-stage liver diseases. To date, the effective and safe strategy to cease fibrosis progression remains an unmet clinical need. Since collagens are the most abundant ECM protein which play an essential role in fibrogenesis, the suitable regulation of collagen homeostasis could be an effective strategy for the treatment of liver fibrosis. Therefore, this review provides a brief overview on the dysregulation of ECM homeostasis, focusing on collagens, in the pathogenesis of liver fibrosis. Most importantly, promising therapeutic mechanisms related to biosynthesis, deposition and extracellular interactions, and degradation of collagens, together with preclinical and clinical antifibrotic evidence of drugs affecting each target are orderly criticized. In addition, challenges for targeting collagen homeostasis in the treatment of liver fibrosis are discussed.
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Affiliation(s)
- Theerut Luangmonkong
- Department of Pharmacology, Faculty of Pharmacy, Mahidol University, Thailand; Centre of Biopharmaceutical Science for Healthy Ageing (BSHA), Faculty of Pharmacy, Mahidol University, Bangkok, Thailand.
| | - Warisara Parichatikanond
- Department of Pharmacology, Faculty of Pharmacy, Mahidol University, Thailand; Centre of Biopharmaceutical Science for Healthy Ageing (BSHA), Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
| | - Peter Olinga
- Department of Pharmaceutical Technology and Biopharmacy, University of Groningen, The Netherlands
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3
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Gong H, Xu HM, Zhang DK. Focusing on discoidin domain receptors in premalignant and malignant liver diseases. Front Oncol 2023; 13:1123638. [PMID: 37007062 PMCID: PMC10050580 DOI: 10.3389/fonc.2023.1123638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 03/03/2023] [Indexed: 03/17/2023] Open
Abstract
Discoidin domain receptors (DDRs) are receptor tyrosine kinases on the membrane surface that bind to extracellular collagens, but they are rarely expressed in normal liver tissues. Recent studies have demonstrated that DDRs participate in and influence the processes underlying premalignant and malignant liver diseases. A brief overview of the potential roles of DDR1 and DDR2 in premalignant and malignant liver diseases is presented. DDR1 has proinflammatory and profibrotic benefits and promotes the invasion, migration and liver metastasis of tumour cells. However, DDR2 may play a pathogenic role in early-stage liver injury (prefibrotic stage) and a different role in chronic liver fibrosis and in metastatic liver cancer. These views are critically significant and first described in detail in this review. The main purpose of this review was to describe how DDRs act in premalignant and malignant liver diseases and their potential mechanisms through an in-depth summary of preclinical in vitro and in vivo studies. Our work aims to provide new ideas for cancer treatment and accelerate translation from bench to bedside.
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Titus AS, V H, Kailasam S. Coordinated regulation of cell survival and cell cycle pathways by DDR2-dependent SRF transcription factor in cardiac fibroblasts. Am J Physiol Heart Circ Physiol 2020; 318:H1538-H1558. [PMID: 32412792 DOI: 10.1152/ajpheart.00740.2019] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Relative resistance to apoptosis and the ability to proliferate and produce a collagen-rich scar determine the critical role of cardiac fibroblasts in wound healing and tissue remodeling following myocardial injury. Identification of cardiac fibroblast-specific factors and mechanisms underlying these aspects of cardiac fibroblast function is therefore of considerable scientific and clinical interest. In the present study, gene knockdown and overexpression approaches and promoter binding assays showed that discoidin domain receptor 2 (DDR2), a mesenchymal cell-specific collagen receptor tyrosine kinase localized predominantly in fibroblasts in the heart, acts via ERK1/2 MAPK-activated serum response factor (SRF) transcription factor to enhance the expression of antiapoptotic cIAP2 in cardiac fibroblasts, conferring resistance against oxidative injury. Furthermore, DDR2 was found to act via ERK1/2 MAPK-activated SRF to transcriptionally upregulate Skp2 that in turn facilitated post-translational degradation of p27, the cyclin-dependent kinase inhibitor that causes cell cycle arrest, to promote G1-S transition, as evidenced by Rb phosphorylation, increased proliferating cell nuclear antigen (PCNA) levels, and flow cytometry. DDR2-dependent ERK1/2 MAPK activation also suppressed forkhead box O 3a (FoxO3a)-mediated transcriptional induction of p27. Inhibition of the binding of collagen type I to DDR2 using WRG-28 indicated the obligate role of collagen type I in the activation of DDR2 and its regulatory role in cell survival and cell cycle protein expression. Notably, DDR2 levels positively correlated with SRF, cIAP2, and PCNA levels in cardiac fibroblasts from spontaneously hypertensive rats. To conclude, DDR2-mediated ERK1/2 MAPK activation facilitates coordinated regulation of cell survival and cell cycle progression in cardiac fibroblasts via SRF.NEW & NOTEWORTHY Relative resistance to apoptosis and the ability to proliferate and produce a collagen-rich scar enable cardiac fibroblasts to play a central role in myocardial response to injury. This study reports novel findings that mitogen-stimulated cardiac fibroblasts exploit a common regulatory mechanism involving collagen receptor (DDR2)-dependent activation of ERK1/2 MAPK and serum response factor to achieve coordinated regulation of apoptosis resistance and cell cycle progression, which could facilitate their survival and function in the injured myocardium.
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Affiliation(s)
- Allen Sam Titus
- Division of Cellular and Molecular Cardiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, India
| | - Harikrishnan V
- Division of Cellular and Molecular Cardiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, India
| | - Shivakumar Kailasam
- Division of Cellular and Molecular Cardiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, India
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Yang Q, Luo C, Zhang X, Liu Y, Wang Z, Cacciamani P, Shi J, Cui Y, Wang C, Sinha B, Peng B, Tong G, Das G, Shah E, Gao Y, Li W, Tu Y, Qian D, Shah K, Akbar M, Zhou S, Song BJ, Wang X. Tartary buckwheat extract alleviates alcohol-induced acute and chronic liver injuries through the inhibition of oxidative stress and mitochondrial cell death pathway. Am J Transl Res 2020; 12:70-89. [PMID: 32051738 PMCID: PMC7013218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 12/18/2019] [Indexed: 06/10/2023]
Abstract
Alcohol use disorder (AUD) is an enormous public health problem that poses significant social, medical, and economic burdens. Under AUD, the liver is one of the most adversely affected organs. As current therapies and protective drugs for AUD-mediated liver injury are very limited, the prevention and therapy of alcoholic liver disease are urgently needed. The present study aims to investigate the beneficial effects of tartary buckwheat extract (TBE), the important component of Maopu tartary buckwheat liquor, on both alcoholic-induced acute and chronic liver injuries. We show that the TBE administration, similar to curcumin, significantly reduces the elevated serum aspartate aminotransferase and alanine aminotransferase levels, improves liver index, alleviates the elevated contents of hepatic malondialdehye, and restores the decreased contents of hepatic glutathione both in acute and chronic liver injuries in alcohol-exposed rats. Furthermore, histopathological analyses show that a medium dose of TBE (16.70 ml/kg body weight) alleviates hepatocyte morphology changes in both acute and chronic alcohol exposure models. We also show the protective effects of TBE on the cell death rates of alcohol-exposed primary cultured hepatocytes, HepG2 hepatoma, and Huh 7 hepatoma cells. Furthermore, we demonstrate that TBE exerts hepatoprotection partly through inhibiting the mitochondrial cell death pathway by reducing cytochrome c release, caspase-9 and -3 activities, and the number of TUNEL-positive cells. These effects of TBE were accompanied by enhanced levels of Bcl-2 and Bcl-xL and autophagic cell death pathway by reducing Beclin-1 expression, as well as through promoting its anti-oxidant capacity by suppressing reactive oxygen species production. This study demonstrates, for the first time, the protective effect of TBE against alcohol-induced acute and chronic liver injury in vivo and in vitro. Given the dietary nature of tartary buckwheat, pueraria, lycium barbarum, and hawthorn, the oral intake of TBE or liquor contained TBE, e.g., Maopu Tartary buckwheat liquor, compared with pure liquor consumption alone, may have the potential to alleviate alcoholic-induced liver injuries.
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Affiliation(s)
- Qiang Yang
- Hubei Provincial Key Lab for Quality and Safety of Traditional Chinese Medicine Health Food, Jing Brand Research InstituteDaye, Hubei, China
| | - Chengliang Luo
- Brigham and Women’s Hospital, Harvard Medical SchoolBoston, MA, USA
- Department of Forensic Medicine, Medical College of Soochow UniversitySuzhou, Jiangsu, China
| | - Xinmu Zhang
- Brigham and Women’s Hospital, Harvard Medical SchoolBoston, MA, USA
| | - Yuancai Liu
- Hubei Provincial Key Lab for Quality and Safety of Traditional Chinese Medicine Health Food, Jing Brand Research InstituteDaye, Hubei, China
| | - Zufeng Wang
- Brigham and Women’s Hospital, Harvard Medical SchoolBoston, MA, USA
- Department of Forensic Medicine, Medical College of Soochow UniversitySuzhou, Jiangsu, China
| | | | - Jiao Shi
- Hubei Provincial Key Lab for Quality and Safety of Traditional Chinese Medicine Health Food, Jing Brand Research InstituteDaye, Hubei, China
| | - Yongchun Cui
- Brigham and Women’s Hospital, Harvard Medical SchoolBoston, MA, USA
| | - Chunling Wang
- Brigham and Women’s Hospital, Harvard Medical SchoolBoston, MA, USA
| | - Bharati Sinha
- Brigham and Women’s Hospital, Harvard Medical SchoolBoston, MA, USA
| | - Bin Peng
- Brigham and Women’s Hospital, Harvard Medical SchoolBoston, MA, USA
| | - Guoqiang Tong
- Hubei Provincial Key Lab for Quality and Safety of Traditional Chinese Medicine Health Food, Jing Brand Research InstituteDaye, Hubei, China
| | - Gapika Das
- Brigham and Women’s Hospital, Harvard Medical SchoolBoston, MA, USA
| | - Elisha Shah
- Brigham and Women’s Hospital, Harvard Medical SchoolBoston, MA, USA
| | - Yuan Gao
- Departments of Orthopedic Surgery, Brigham and Women’s Hospital, Harvard Medical SchoolBoston, MA, USA
| | - Wei Li
- Brigham and Women’s Hospital, Harvard Medical SchoolBoston, MA, USA
| | - Yanyang Tu
- Brigham and Women’s Hospital, Harvard Medical SchoolBoston, MA, USA
| | - Dongyang Qian
- Departments of Orthopedic Surgery, Brigham and Women’s Hospital, Harvard Medical SchoolBoston, MA, USA
| | - Khalid Shah
- Brigham and Women’s Hospital, Harvard Medical SchoolBoston, MA, USA
| | - Mohammed Akbar
- Division of Neuroscience & Behavior, National Institute on Alcohol Abuse and Alcoholism, National Institutes of HealthRockville, MD, USA
| | - Shuanhu Zhou
- Departments of Orthopedic Surgery, Brigham and Women’s Hospital, Harvard Medical SchoolBoston, MA, USA
| | - Byoung-Joon Song
- Section of Molecular Pharmacology and Toxicology, Laboratory of Membrane Biochemistry and Biophysics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of HealthRockville, MD, USA
| | - Xin Wang
- Brigham and Women’s Hospital, Harvard Medical SchoolBoston, MA, USA
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6
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Han K, Zhang Y, Yang Z. Cilostazol protects rats against alcohol-induced hepatic fibrosis via suppression of TGF-β1/CTGF activation and the cAMP/Epac1 pathway. Exp Ther Med 2019; 17:2381-2388. [PMID: 30867723 PMCID: PMC6395972 DOI: 10.3892/etm.2019.7207] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 11/23/2018] [Indexed: 02/06/2023] Open
Abstract
Alcohol abuse and chronic alcohol consumption are major causes of alcoholic liver disease worldwide, particularly alcohol-induced hepatic fibrosis (AHF). Liver fibrosis is an important public health concern because of its high morbidity and mortality. The present study examined the mechanisms and effects of the phosphodiesterase III inhibitor cilostazol on AHF. Rats received alcohol infusions via gavage to induce liver fibrosis and were treated with colchicine (positive control) or cilostazol. The serum alcohol dehydrogenase (ADH) and acetaldehyde dehydrogenase (ALDH) activities and the albumin/globulin (A/G), enzymes and hyaluronic acid (HA), type III precollagen (PC III), laminin (LA), and type IV collagen (IV-C) levels were measured using commercially available kits. α-smooth muscle actin (α-SMA), collagen I and III, transforming growth factor-β1 (TGF-β1), connective tissue growth factor (CTGF), adenosine 3',5'-cyclic monophosphate (cAMP) and exchange protein directly activated by cAMP (Epac) 1/2 expression in liver tissue were measured using western blotting. The results demonstrated that cilostazol significantly increased the serum ADH and ALDH activities and decreased the liver hydroxyproline levels. Cilostazol increased the serum A/G ratio and inhibited the total serum protein, enzymes, HA, PCIII, LA and IV-C levels. Western blotting revealed that cilostazol effectively decreased liver α-SMA, collagen I and III, TGF-β1 and CTGF expression. Cilostazol significantly increased the cAMP and Epac1 levels in hepatic tissue. The present study suggests that cilostazol protects rats against AHF via suppression of TGF-β1/CTGF activation and the cAMP/Epac1 pathway.
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Affiliation(s)
- Kun Han
- Department of Gastroenterology, Xi'an Central Hospital, Xi'an, Shaanxi 710003, P.R. China
| | - Yanting Zhang
- Department of Gastroenterology, Xi'an Central Hospital, Xi'an, Shaanxi 710003, P.R. China
| | - Zhenwei Yang
- Department of Gastroenterology, Xi'an Central Hospital, Xi'an, Shaanxi 710003, P.R. China
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7
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Wang Z, Zhang Y, Pinkas DM, Fox AE, Luo J, Huang H, Cui S, Xiang Q, Xu T, Xun Q, Zhu D, Tu Z, Ren X, Brekken RA, Bullock AN, Liang G, Ding K, Lu X. Design, Synthesis, and Biological Evaluation of 3-(Imidazo[1,2- a]pyrazin-3-ylethynyl)-4-isopropyl- N-(3-((4-methylpiperazin-1-yl)methyl)-5-(trifluoromethyl)phenyl)benzamide as a Dual Inhibitor of Discoidin Domain Receptors 1 and 2. J Med Chem 2018; 61:7977-7990. [PMID: 30075624 PMCID: PMC6287892 DOI: 10.1021/acs.jmedchem.8b01045] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Discoidin-domain receptors 1 and 2 (DDR1 and DDR2) are new potential targets for anti-inflammatory-drug discovery. A series of heterocycloalkynylbenzimides were designed and optimized to coinhibit DDR1 and DDR2. One of the most promising compounds, 5n, tightly bound to DDR1 and DDR2 proteins with Kd values of 7.9 and 8.0 nM; potently inhibited the kinases with IC50 values of 9.4 and 20.4 nM, respectively; and was significantly less potent for a panel of 403 wild-type kinases at 1.0 μM. DDR1- and DDR2-kinase inhibition by 5n was validated by Western-blotting analysis in primary human lung fibroblasts. The compound also dose-dependently inhibited lipopolysaccharide (LPS)-induced interleukin 6 (IL-6) release in vitro and exhibited promising in vivo anti-inflammatory effects in an LPS-induced-acute-lung-injury (ALI) mouse model. Compound 5n may serve as a lead compound for new anti-inflammatory drug discovery.
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Affiliation(s)
- Zhen Wang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), Guangzhou City Key Laboratory of Precision Chemical Drug Development, School of Pharmacy , Jinan University , 601 Huangpu Avenue West , Guangzhou 510632 , China.,Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences , 190 Kaiyuan Avenue , Guangzhou 510530 , China
| | | | - Daniel M Pinkas
- Structural Genomics Consortium , University of Oxford , Old Road Campus Research Building, Roosevelt Drive , Oxford OX3 7DQ , U.K
| | - Alice E Fox
- Structural Genomics Consortium , University of Oxford , Old Road Campus Research Building, Roosevelt Drive , Oxford OX3 7DQ , U.K
| | - Jinfeng Luo
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences , 190 Kaiyuan Avenue , Guangzhou 510530 , China
| | - Huocong Huang
- Nancy B. and Jake L. Hamon Centre for Therapeutic Oncology Research, Departments of Surgery and Pharmacology , University of Texas Southwestern Medical Center at Dallas , 5323 Harry Hines Boulevard , Dallas , Texas 75390 , United States
| | - Shengyang Cui
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences , 190 Kaiyuan Avenue , Guangzhou 510530 , China
| | - Qiuping Xiang
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences , 190 Kaiyuan Avenue , Guangzhou 510530 , China
| | | | - Qiuju Xun
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences , 190 Kaiyuan Avenue , Guangzhou 510530 , China
| | - Dongsheng Zhu
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences , 190 Kaiyuan Avenue , Guangzhou 510530 , China
| | - Zhengchao Tu
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences , 190 Kaiyuan Avenue , Guangzhou 510530 , China
| | - Xiaomei Ren
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), Guangzhou City Key Laboratory of Precision Chemical Drug Development, School of Pharmacy , Jinan University , 601 Huangpu Avenue West , Guangzhou 510632 , China
| | - Rolf A Brekken
- Nancy B. and Jake L. Hamon Centre for Therapeutic Oncology Research, Departments of Surgery and Pharmacology , University of Texas Southwestern Medical Center at Dallas , 5323 Harry Hines Boulevard , Dallas , Texas 75390 , United States
| | - Alex N Bullock
- Structural Genomics Consortium , University of Oxford , Old Road Campus Research Building, Roosevelt Drive , Oxford OX3 7DQ , U.K
| | | | - Ke Ding
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), Guangzhou City Key Laboratory of Precision Chemical Drug Development, School of Pharmacy , Jinan University , 601 Huangpu Avenue West , Guangzhou 510632 , China
| | - Xiaoyun Lu
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), Guangzhou City Key Laboratory of Precision Chemical Drug Development, School of Pharmacy , Jinan University , 601 Huangpu Avenue West , Guangzhou 510632 , China
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El-Sisi AEDES, Sokar SS, Shebl AM, Mohamed DZ. Antifibrotic effect of diethylcarbamazine combined with hesperidin against ethanol induced liver fibrosis in rats. Biomed Pharmacother 2017; 89:1196-1206. [DOI: 10.1016/j.biopha.2017.03.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Revised: 03/03/2017] [Accepted: 03/05/2017] [Indexed: 02/09/2023] Open
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Peixoto E, Atorrasagasti C, Malvicini M, Fiore E, Rodriguez M, Garcia M, Finocchieto P, Poderoso JJ, Corrales F, Mazzolini G. SPARC gene deletion protects against toxic liver injury and is associated to an enhanced proliferative capacity and reduced oxidative stress response. Oncotarget 2016; 10:4169-4179. [PMID: 31289615 PMCID: PMC6609249 DOI: 10.18632/oncotarget.9456] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 03/31/2016] [Indexed: 12/27/2022] Open
Abstract
SPARC, also known as osteonectin and BM-40, is a matricellular protein with a number of biological functions. Hepatic SPARC expression is induced in response to thioacetamide, bile-duct ligation, and acute injuries such as concanavalin A and lipopolysacharide (LPS)/D-galactosamine. We have previously demonstrated that the therapeutic inhibition of SPARC or SPARC gene deletion protected mice against liver injury. We investigated the mechanisms involved in the protective effect of SPARC inhibition in mice. We performed a proteome analysis of livers from SPARC+/+ and SPARC−/− mice chronically treated with thioacetamide. Catalase activity, carbonylation levels, oxidative stress response, and mitochondrial function were studied. Genomic analysis revealed that SPARC−/− mice had an increased expression of cell proliferation genes. Proteins involved in detoxification of reactive oxygen species such as catalase, peroxirredoxine-1, and glutathione-S-transferase P1 and Mu1 were highly expressed as evidenced by proteome analysis; hepatic catalase activity was increased in SPARC−/− mice. Oxidative stress response and carbonylation levels were lower in livers from SPARC−/− mice. Hepatic mitochondria showed lower levels of nitrogen reactive species in the SPARC−/− concanavalin A-treated mice. Mitochondrial morphology was preserved, and its complex activity reduced in SPARC−/− mice. In conclusion, our data suggest that the protection associated with SPARC gene deletion may be partially due to a higher proliferative capacity of hepatocytes and an enhanced oxidative stress defense in SPARC−/− mice after liver injury.
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Affiliation(s)
- Estanislao Peixoto
- Gene Therapy Laboratory, Instituto de Investigaciones Médicas Aplicadas-CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Buenos Aires, Argentina
| | - Catalina Atorrasagasti
- Gene Therapy Laboratory, Instituto de Investigaciones Médicas Aplicadas-CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Buenos Aires, Argentina
| | - Mariana Malvicini
- Gene Therapy Laboratory, Instituto de Investigaciones Médicas Aplicadas-CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Buenos Aires, Argentina
| | - Esteban Fiore
- Gene Therapy Laboratory, Instituto de Investigaciones Médicas Aplicadas-CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Buenos Aires, Argentina
| | - Marcelo Rodriguez
- Gene Therapy Laboratory, Instituto de Investigaciones Médicas Aplicadas-CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Buenos Aires, Argentina
| | - Mariana Garcia
- Gene Therapy Laboratory, Instituto de Investigaciones Médicas Aplicadas-CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Buenos Aires, Argentina
| | | | | | | | - Guillermo Mazzolini
- Gene Therapy Laboratory, Instituto de Investigaciones Médicas Aplicadas-CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Buenos Aires, Argentina
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10
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Yang Y, Yang F, Wu X, Lv X, Li J. EPAC activation inhibits acetaldehyde-induced activation and proliferation of hepatic stellate cell via Rap1. Can J Physiol Pharmacol 2015; 94:498-507. [PMID: 26854595 DOI: 10.1139/cjpp-2015-0437] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Hepatic stellate cells (HSCs) activation represents an essential event during alcoholic liver fibrosis (ALF). Previous studies have demonstrated that the rat HSCs could be significantly activated after exposure to 200 μmol/L acetaldehyde for 48 h, and the cAMP/PKA signaling pathways were also dramatically upregulated in activated HSCs isolated from alcoholic fibrotic rat liver. Exchange protein activated by cAMP (EPAC) is a family of guanine nucleotide exchange factors (GEFs) for the small Ras-like GTPases Rap, and is being considered as a vital mediator of cAMP signaling in parallel with the principal cAMP target protein kinase A (PKA). Our data showed that both cAMP/PKA and cAMP/EPAC signaling pathways were involved in acetaldehyde-induced HSCs. Acetaldehyde could reduce the expression of EPAC1 while enhancing the expression of EPAC2. The cAMP analog Me-cAMP, which stimulates the EPAC/Rap1 pathway, could significantly decrease the proliferation and collagen synthesis of acetaldehyde-induced HSCs. Furthermore, depletion of EPAC2, but not EPAC1, prevented the activation of HSC measured as the production of α-SMA and collagen type I and III, indicating that EPAC1 appears to have protective effects on acetaldehyde-induced HSCs. Curiously, activation of PKA or EPAC perhaps has opposite effects on the synthesis of collagen and α-SMA: EPAC activation by Me-cAMP increased the levels of GTP-bound (activated) Rap1 while PKA activation by Phe-cAMP had no significant effects on such binding. These results suggested that EPAC activation could inhibit the activation and proliferation of acetaldehyde-induced HSCs via Rap1.
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Affiliation(s)
- Yan Yang
- a School of Pharmacy, Anhui Medical University, Meishan Road, Hefei, Anhui Province 230032, China.,b Institute for Liver Disease of Anhui Medical University, Meishan Road, Hefei, Anhui Province 230032, China
| | - Feng Yang
- a School of Pharmacy, Anhui Medical University, Meishan Road, Hefei, Anhui Province 230032, China.,b Institute for Liver Disease of Anhui Medical University, Meishan Road, Hefei, Anhui Province 230032, China
| | - Xiaojuan Wu
- a School of Pharmacy, Anhui Medical University, Meishan Road, Hefei, Anhui Province 230032, China.,b Institute for Liver Disease of Anhui Medical University, Meishan Road, Hefei, Anhui Province 230032, China
| | - Xiongwen Lv
- a School of Pharmacy, Anhui Medical University, Meishan Road, Hefei, Anhui Province 230032, China.,b Institute for Liver Disease of Anhui Medical University, Meishan Road, Hefei, Anhui Province 230032, China
| | - Jun Li
- a School of Pharmacy, Anhui Medical University, Meishan Road, Hefei, Anhui Province 230032, China.,b Institute for Liver Disease of Anhui Medical University, Meishan Road, Hefei, Anhui Province 230032, China
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11
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Zhao J, Peng L, Luo Z, Cui R, Yan M. Inhibitory effects of dimethyl α-ketoglutarate in hepatic stellate cell activation. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2015; 8:5471-5477. [PMID: 26191252 PMCID: PMC4503123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Accepted: 03/30/2015] [Indexed: 06/04/2023]
Abstract
AIM The activation of Hepatic stellate cell (HSC) is a pivotal event in the initiation and progression of hepatic fibrosis and a major source of collagen deposition. A recent study found that autophagy fuels the HSC activation. α-ketoglutarate (AKG), an intermediate in the Kerbs CYCLE, has been shown to regulate the level of autophagy. In this study, we aim to investigate the potential effect of dimethyl α-ketoglutarate (DMKG), a membrane-permeable esters of AKG, on the activation of HSC. METHODS HSC and hepatocyte cell lines were treated with DMKG at gradient concentrations, MTT assay was used to assess the cell viability. Concentrations of DMKG that did not affect the cell survival were added to the culture media of HSC cells. Real-time PCR and western blot analysis was carried out to evaluate the expression of fibrogenic genes in HSC after culture for 24 hours. RESULTS Low dose of DMKG had little cytotoxicity to both HSCs and hepatocytes, while HSCs were more vulnerable to high dose of DMKG than hepatocytes. More importantly, DMKG inhibited the expression of α-SMA and collagen I significantly in HSCs detected by real-time PCR and western blot analysis at the concentrations that didn't decrease cell viability. CONCLUSIONS DMKG has a significant role of inhibiting the activation of HSC and may attenuate hepatic fibrosis safely.
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Affiliation(s)
- Jianjian Zhao
- Department of Geriatric Gastroenterology, Qilu Hospital of Shandong UniversityJinan, Shandong, China
- Key Laboratory of Cardiovascular Remodeling, Qilu Hospital of Shandong UniversityJinan, Shandong, China
| | - Lei Peng
- Department of Geriatric Gastroenterology, Qilu Hospital of Shandong UniversityJinan, Shandong, China
| | - Zheng Luo
- Department of Geriatric Gastroenterology, Qilu Hospital of Shandong UniversityJinan, Shandong, China
| | - Ruibing Cui
- Department of Geriatric Gastroenterology, Qilu Hospital of Shandong UniversityJinan, Shandong, China
| | - Ming Yan
- Department of Geriatric Gastroenterology, Qilu Hospital of Shandong UniversityJinan, Shandong, China
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12
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Yang J, Ao N, Du J, Wang X, He Y. Protective effect of liraglutide against ER stress in the liver of high-fat diet-induced insulin-resistant rats. Endocrine 2015; 49:106-18. [PMID: 25471281 DOI: 10.1007/s12020-014-0480-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Accepted: 11/11/2014] [Indexed: 12/12/2022]
Abstract
The purpose of this study was to investigate whether the glucagon-like peptide-1 (GLP-1) analog liraglutide can alleviate endoplasmic reticulum (ER) stress and insulin resistance (IR) in the liver of high-fat diet-induced insulin-resistant rats. Eighty-five male Sprague-Dawley rats were fed with normal chow or a high-fat diet for 12 weeks. The IR was evaluated using the hyperinsulinemic-euglycemic clamp technique. The rats in the HF group were further divided into four groups and were treated with or without liraglutide by subcutaneous injection. Body weight (BW), fasting blood glucose (FBG), fasting insulin (FINS), and insulin sensitivity were measured. The expression of ER stress marker GRP78 and its signaling mediators, such as IRE1α, PERK, and ATF6, in the liver were examined. The ultrastructure of the ER in the liver was examined by transmission electron microscopy. The expression levels of chemerin in the liver and the serum were also measured. After 4 weeks of liraglutide treatment, the BW, FBG, and FINS levels were significantly reduced, and the insulin sensitivity was increased compared with the HF only rats. Liraglutide reduced the expression of GRP78 and chemerin in liver tissue at both the mRNA and protein levels. Interestingly, the chemerin mRNA was closely correlated with the level of GRP78 mRNA, while the level of chemerin in serum was also associated with the FINS level. As a representative GLP-1 analog, liraglutide can suppress ER stress and reduce chemerin expression in the liver of rats exposed to a high-fat diet.
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Affiliation(s)
- Jing Yang
- Department of Endocrinology and Metabolism, The First Affiliated Hospital, China Medical University, Shenyang, 110001, China
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13
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Wang Q, Dai X, Yang W, Wang H, Zhao H, Yang F, Yang Y, Li J, Lv X. Caffeine protects against alcohol-induced liver fibrosis by dampening the cAMP/PKA/CREB pathway in rat hepatic stellate cells. Int Immunopharmacol 2015; 25:340-52. [PMID: 25701503 DOI: 10.1016/j.intimp.2015.02.012] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 01/26/2015] [Accepted: 02/09/2015] [Indexed: 12/20/2022]
Abstract
Alcoholic liver fibrosis (ALF) is characterized by hyperplasia of extracellular matrix under long-term alcohol stimulation. Hepatic stellate cell (HSC) activation plays an important role in promoting hepatic fibrogenesis. Caffeine, as the main active component of coffee and tea, was widely consumed in daily life. It was always a thought that caffeine can reduce the probability of suffering from liver diseases. In this study, we attempt to validate the hypothesis that caffeine inhibits activation of HSCs which were isolated from rat ALF model. The rats were gavaged by ethanol to establish ALF model and then treated with different concentrations of caffeine or colchicine. Serum was collected to measure the contents of serum alanine aminotransferase (ALT), aspartate transaminase (AST), hyaluronic acid (HA), laminin (LN), N-terminal peptide of type III procollagen (PIIINP) and type IV collagen (CIV). Then liver tissues were obtained for hematoxylin-eosin staining and Sirius-red staining. Others were treated through liver perfusion to isolate primary rat HSCs. Interestingly, we found that caffeine significantly decreased ALT, AST, HA, LN, PIIINP and CIV levels and reversed liver fibrosis in rat ALF models. Results of immunohistochemistry, real-time PCR and western blot indicated that caffeine could reduce fibrosis and inhibit cAMP/PKA/CREB signal pathway in HSC. Caffeine has a preventive effect on ALF. The mechanism may be interpreted that caffeine inhibits the cAMP/PKA/CREB signal pathway through adenosine A2A receptors in HSC.
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Affiliation(s)
- Qi Wang
- School of Pharmacy, Anhui Medical University, Mei Shan Road, Hefei, Anhui Province, 230032, China; Institute for Liver Disease of Anhui Medical University, Mei Shan Road, Hefei, Anhui Province, 230032, China.
| | - Xuefei Dai
- The Fourth Affiliated Hospital of Anhui Medical University, Tun Xi Road, Hefei, Anhui Province, 230000, China
| | - Wanzhi Yang
- The First Hospital of Anqing, Xiao Su Road, Anqing, Anhui Province, 246003, China
| | - He Wang
- School of Pharmacy, Anhui Medical University, Mei Shan Road, Hefei, Anhui Province, 230032, China; Institute for Liver Disease of Anhui Medical University, Mei Shan Road, Hefei, Anhui Province, 230032, China
| | - Han Zhao
- School of Pharmacy, Anhui Medical University, Mei Shan Road, Hefei, Anhui Province, 230032, China; Institute for Liver Disease of Anhui Medical University, Mei Shan Road, Hefei, Anhui Province, 230032, China
| | - Feng Yang
- School of Pharmacy, Anhui Medical University, Mei Shan Road, Hefei, Anhui Province, 230032, China; Institute for Liver Disease of Anhui Medical University, Mei Shan Road, Hefei, Anhui Province, 230032, China
| | - Yan Yang
- School of Pharmacy, Anhui Medical University, Mei Shan Road, Hefei, Anhui Province, 230032, China; Institute for Liver Disease of Anhui Medical University, Mei Shan Road, Hefei, Anhui Province, 230032, China
| | - Jun Li
- School of Pharmacy, Anhui Medical University, Mei Shan Road, Hefei, Anhui Province, 230032, China; Institute for Liver Disease of Anhui Medical University, Mei Shan Road, Hefei, Anhui Province, 230032, China
| | - Xiongwen Lv
- School of Pharmacy, Anhui Medical University, Mei Shan Road, Hefei, Anhui Province, 230032, China; Institute for Liver Disease of Anhui Medical University, Mei Shan Road, Hefei, Anhui Province, 230032, China.
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14
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Li Y, Lu X, Ren X, Ding K. Small Molecule Discoidin Domain Receptor Kinase Inhibitors and Potential Medical Applications. J Med Chem 2015; 58:3287-301. [DOI: 10.1021/jm5012319] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yupeng Li
- State Key Laboratory
of Respiratory Diseases, Guangzhou Institutes of Biomedicine and Health,
Chinese Academy of Sciences, No. 190
Kaiyuan Avenue, Guangzhou 510530, China
- University of Chinese Academy of Sciences, No. 19 Yuquan Road, Beijing 100049, China
| | - Xiaoyun Lu
- State Key Laboratory
of Respiratory Diseases, Guangzhou Institutes of Biomedicine and Health,
Chinese Academy of Sciences, No. 190
Kaiyuan Avenue, Guangzhou 510530, China
| | - Xiaomei Ren
- State Key Laboratory
of Respiratory Diseases, Guangzhou Institutes of Biomedicine and Health,
Chinese Academy of Sciences, No. 190
Kaiyuan Avenue, Guangzhou 510530, China
| | - Ke Ding
- State Key Laboratory
of Respiratory Diseases, Guangzhou Institutes of Biomedicine and Health,
Chinese Academy of Sciences, No. 190
Kaiyuan Avenue, Guangzhou 510530, China
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15
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Leitinger B. Discoidin domain receptor functions in physiological and pathological conditions. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2014; 310:39-87. [PMID: 24725424 DOI: 10.1016/b978-0-12-800180-6.00002-5] [Citation(s) in RCA: 243] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The discoidin domain receptors, DDR1 and DDR2, are nonintegrin collagen receptors that are members of the receptor tyrosine kinase family. Both DDRs bind a number of different collagen types and play important roles in embryo development. Dysregulated DDR function is associated with progression of various human diseases, including fibrosis, arthritis, and cancer. By interacting with key components of the extracellular matrix and displaying distinct activation kinetics, the DDRs form a unique subfamily of receptor tyrosine kinases. DDR-facilitated cellular functions include cell migration, cell survival, proliferation, and differentiation, as well as remodeling of extracellular matrices. This review summarizes the current knowledge of DDR-ligand interactions, DDR-initiated signal pathways and the molecular mechanisms that regulate receptor function. Also discussed are the roles of DDRs in development and disease progression.
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Affiliation(s)
- Birgit Leitinger
- National Heart and Lung Institute, Imperial College London, London, United Kingdom.
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16
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Peixoto E, Atorrasagasti C, Aquino JB, Militello R, Bayo J, Fiore E, Piccioni F, Salvatierra E, Alaniz L, García MG, Bataller R, Corrales F, Gidekel M, Podhajcer O, Colombo MI, Mazzolini G. SPARC (secreted protein acidic and rich in cysteine) knockdown protects mice from acute liver injury by reducing vascular endothelial cell damage. Gene Ther 2014; 22:9-19. [PMID: 25410742 DOI: 10.1038/gt.2014.102] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Revised: 09/19/2014] [Accepted: 09/24/2014] [Indexed: 12/24/2022]
Abstract
Secreted protein, acidic and rich in cysteine (SPARC) is involved in many biological process including liver fibrogenesis, but its role in acute liver damage is unknown. To examine the role of SPARC in acute liver injury, we used SPARC knock-out (SPARC(-/-)) mice. Two models of acute liver damage were used: concanavalin A (Con A) and the agonistic anti-CD95 antibody Jo2. SPARC expression levels were analyzed in liver samples from patients with acute-on-chronic alcoholic hepatitis (AH). SPARC expression is increased on acute-on-chronic AH patients. Knockdown of SPARC decreased hepatic damage in the two models of liver injury. SPARC(-/-) mice showed a marked reduction in Con A-induced necroinflammation. Infiltration by CD4+ T cells, expression of tumor necrosis factor-α and interleukin-6 and apoptosis were attenuated in SPARC(-/-) mice. Sinusoidal endothelial cell monolayer was preserved and was less activated in Con A-treated SPARC(-/-) mice. SPARC knockdown reduced Con A-induced autophagy of cultured human microvascular endothelial cells (HMEC-1). Hepatic transcriptome analysis revealed several gene networks that may have a role in the attenuated liver damaged found in Con A-treated SPARC(-/-) mice. SPARC has a significant role in the development of Con A-induced severe liver injury. These results suggest that SPARC could represent a therapeutic target in acute liver injury.
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Affiliation(s)
- E Peixoto
- Liver Unit, Gene Therapy Laboratory, Facultad de Ciencias Biomédicas, Universidad Austral, Buenos Aires, Argentina
| | - C Atorrasagasti
- 1] Liver Unit, Gene Therapy Laboratory, Facultad de Ciencias Biomédicas, Universidad Austral, Buenos Aires, Argentina [2] CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Buenos Aires, Argentina
| | - J B Aquino
- 1] Liver Unit, Gene Therapy Laboratory, Facultad de Ciencias Biomédicas, Universidad Austral, Buenos Aires, Argentina [2] CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Buenos Aires, Argentina
| | - R Militello
- Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, Mendoza, Argentina
| | - J Bayo
- Liver Unit, Gene Therapy Laboratory, Facultad de Ciencias Biomédicas, Universidad Austral, Buenos Aires, Argentina
| | - E Fiore
- Liver Unit, Gene Therapy Laboratory, Facultad de Ciencias Biomédicas, Universidad Austral, Buenos Aires, Argentina
| | - F Piccioni
- Liver Unit, Gene Therapy Laboratory, Facultad de Ciencias Biomédicas, Universidad Austral, Buenos Aires, Argentina
| | - E Salvatierra
- Molecular and Cellular Therapy Laboratory, Fundación Instituto Leloir, Buenos Aires, Argentina
| | - L Alaniz
- 1] Liver Unit, Gene Therapy Laboratory, Facultad de Ciencias Biomédicas, Universidad Austral, Buenos Aires, Argentina [2] CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Buenos Aires, Argentina
| | - M G García
- 1] Liver Unit, Gene Therapy Laboratory, Facultad de Ciencias Biomédicas, Universidad Austral, Buenos Aires, Argentina [2] CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Buenos Aires, Argentina
| | - R Bataller
- 1] University of North Carolina at Chapel Hill, Chapel Hill, NC, USA [2] Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - F Corrales
- CIMA, Universidad de Navarra, Pamplona, España
| | - M Gidekel
- 1] Universidad de la Frontera, Temuco, Chile. [2] Universidad Autónoma de Chile, Santiago, Chile
| | - O Podhajcer
- Molecular and Cellular Therapy Laboratory, Fundación Instituto Leloir, Buenos Aires, Argentina
| | - M I Colombo
- 1] CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Buenos Aires, Argentina [2] Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, Mendoza, Argentina
| | - G Mazzolini
- 1] Liver Unit, Gene Therapy Laboratory, Facultad de Ciencias Biomédicas, Universidad Austral, Buenos Aires, Argentina [2] CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Buenos Aires, Argentina
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17
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Miao L, Wang Y, Zhu S, Shi M, Li Y, Ding J, Yang J, Ye Q, Cai H, Zhang D, Liu H, Song Y. Identification of novel driver mutations of the discoidin domain receptor 2 (DDR2) gene in squamous cell lung cancer of Chinese patients. BMC Cancer 2014; 14:369. [PMID: 24885564 PMCID: PMC4039546 DOI: 10.1186/1471-2407-14-369] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2013] [Accepted: 05/20/2014] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Although many of the recently approved genomically targeted therapies have improved outcomes for patients in non-small-cell lung cancer (NSCLC) with lung adenocarcinoma, little is known about the genomic alterations that drive lung squamous cell cancer (SCC) and development of effective targeted therapies in lung SCC is a promising area to be further investigated. Discoidin domain receptor 2 (DDR2), is a novel receptor tyrosine kinases that respond to several collagens and involved in tissue repair, primary and metastatic cancer progression. METHODS Expression of DDR2 mRNA was analyzed in 54 lung SCC tissues by qRT-PCR. Over-expression approaches were used to investigate the biological functions of DDR2 and its' mutations in lung SCC cells. Conventional Sanger sequencing was used to investigate the mutations of DDR2 gene in 86 samples. The effect of DDR2 and its' mutations on proliferation was evaluated by MTT and colony formation assays; cell migration and invasion was evaluated by trasnwell assays. Lung SCC cells stably transfected with pEGFP-DDR2 WT, pEGFP-DDR2-S131C or empty vector were injection into nude mice to study the effect of DDR2 and its' mutation on tumorigenesis in vivo. Protein and mRNA expression levels of E-cadherin and MMP2 were determined by qRT-PCR and western blot analysis. Differences between groups were tested for significance using Student's t-test (two-tailed). RESULTS In this study, we found that DDR2 mRNA levels were significantly decreased in 54 lung SCC tissues compared with normal lung tissues. Moreover, there were 3 novel DDR2 mutations (G531V, S131C, T681I) in 4 patients and provide the mutation rate of 4.6% in the 86 patients with lung SCC. The mutation of S131C in DDR2 could promote lung SCC cells proliferation, migration and invasion via inducing MMP-2, but reducing E-cadherin expression. CONCLUSIONS These data indicated that the novel DDR2 mutation may contribute to the development and progression of lung SCC and this effect may be associated with increased proliferation and invasiveness, at least in part, via regulating E-cadherin expression.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Yong Song
- Department of Respiratory Medicine, Jinling Hospital, Medical School of Nanjing University, East Zhongshan Road 305#, Nanjing 210002, Jiangsu Province China.
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18
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Liu P, Feng Y, Dong C, Yang D, Li B, Chen X, Zhang Z, Wang Y, Zhou Y, Zhao L. Administration of BMSCs with muscone in rats with gentamicin-induced AKI improves their therapeutic efficacy. PLoS One 2014; 9:e97123. [PMID: 24824427 PMCID: PMC4019657 DOI: 10.1371/journal.pone.0097123] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2014] [Accepted: 04/14/2014] [Indexed: 12/15/2022] Open
Abstract
The therapeutic action of bone marrow-derived mesenchymal stem cells (BMSCs) in acute kidney injury (AKI) has been reported by several groups. However, recent studies indicated that BMSCs homed to kidney tissues at very low levels after transplantation. The lack of specific homing of exogenously infused cells limited the effective implementation of BMSC-based therapies. In this study, we provided evidence that the administration of BMSCs combined with muscone in rats with gentamicin-induced AKI intravenously, was a feasible strategy to drive BMSCs to damaged tissues and improve the BMSC-based therapeutic effect. The effect of muscone on BMSC bioactivity was analyzed in vitro and in vivo. The results indicated that muscone could promote BMSC migration and proliferation. Some secretory capacity of BMSC still could be improved in some degree. The BMSC-based therapeutic action was ameliorated by promoting the recovery of biochemical variables in urine or blood, as well as the inhibition of cell apoptosis and inflammation. In addition, the up-regulation of CXCR4 and CXCR7 expression in BMSCs could be the possible mechanism of muscone amelioration. Thus, our study indicated that enhancement of BMSCs bioactivities with muscone could increase the BMSC therapeutic potential and further developed a new therapeutic strategy for the treatment of AKI.
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Affiliation(s)
- Pengfei Liu
- Department of Regeneration Medicine, School of Pharmaceutical Science, Jilin University, Changchun, P.R. China
- Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, P.R. China
| | - Yetong Feng
- Department of Regeneration Medicine, School of Pharmaceutical Science, Jilin University, Changchun, P.R. China
- Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, P.R. China
| | - Chao Dong
- Department of Regeneration Medicine, School of Pharmaceutical Science, Jilin University, Changchun, P.R. China
| | - Dandan Yang
- Department of Regeneration Medicine, School of Pharmaceutical Science, Jilin University, Changchun, P.R. China
- Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, P.R. China
| | - Bo Li
- Department of Regeneration Medicine, School of Pharmaceutical Science, Jilin University, Changchun, P.R. China
- Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, P.R. China
| | - Xin Chen
- Department of Laboratory Medicine, Second Clinical Medical College of Jinan University, Shenzhen People's Hospital, Shenzhen, P.R. China
| | - Zhongjun Zhang
- Department of Anesthesiology, Second Clinical Medical College of Jinan University, Shenzhen People's Hospital, Shenzhen, P.R. China
| | - Yi Wang
- Department of Regeneration Medicine, School of Pharmaceutical Science, Jilin University, Changchun, P.R. China
- * E-mail: (LZ); (YZ); (YW)
| | - Yulai Zhou
- Department of Regeneration Medicine, School of Pharmaceutical Science, Jilin University, Changchun, P.R. China
- * E-mail: (LZ); (YZ); (YW)
| | - Lei Zhao
- Department of Anesthesiology, Second Clinical Medical College of Jinan University, Shenzhen People's Hospital, Shenzhen, P.R. China
- * E-mail: (LZ); (YZ); (YW)
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