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Qi L, Yin Y, Sun M. m6A-mediated lncRNA NEAT1 plays an oncogenic role in non-small cell lung cancer by upregulating the HMGA1 expression through binding miR-361-3p. Genes Genomics 2023; 45:1537-1547. [PMID: 37688756 DOI: 10.1007/s13258-023-01442-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 08/18/2023] [Indexed: 09/11/2023]
Abstract
BACKGROUND Lung cancer is the most common primary malignant tumor of the lung, and 85% of lung cancer is non-small cell lung cancer (NSCLC). The N6-methyladenosine (m6A) and long noncoding RNAs (lncRNAs) have been widely reported to participate in the development of non-small cell lung cancer. OBJECTIVE However, the potential molecular mechanisms of m6A-regulated lncRNAs in NSCLC still need further investigation. METHODS The expression levels and the role of lncRNA NEAT1 in NSCLC tissues or cells were measured by RT-qPCR, Western blot, cell counting kit 8 (CCK-8), flow cytometry assay. RNA immunoprecipitation (RIP) was used to measure the levels of m6A modification of NEAT1. Bioinformatics analysis and dual-luciferase reporter gene assay were detected the relationship between miR-361-3p and NEAT1/HMGA1. Mouse xenograft tumor models were established to confirm the effects of lncRNA NEAT1 in vivo. RESULTS In this study, we verified whether m6A-modified lncRNA nuclear enriched abundant transcript 1 (NEAT1) is involved in NSCLC progression via miR-361-3p/HMGA1 axis. Firstly, we found that lncRNA NEAT1 was upregulated in NSCLC, and was associated with a poor survival in NSCLC patients. Methyltransferase like 3 (METTL3)-mediated m6A modification stabilized and upregulated NEAT1 expression. Next, function experiment indicated that depletion of METTL3 and NEAT1 induced cell apoptosis and inhibited cell proliferation, epithelial-mesenchymal transition (EMT). Likewise, in vivo experiments further supported the oncogenic role of NEAT1 in NSCLC. In addition, the molecular mechanism was uncovered in our study, and we found that lncRNA NEAT1 promoted the expression of high-mobility group AT-hook 1 (HMGA1) by sponging miR-361-3p and then promoted tumorigenesis of NSCLC. CONCLUSION In conclusion, our findings demonstrated that METTL3-mediated m6A modification accelerated NSCLC progression by regulating the NEAT1/miR-361-3p/HMGA1 axis, which provides important targets for the treatment of NSCLC.
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Affiliation(s)
- Li Qi
- Department of Oncology and Radiotherapy, The Second Affiliated Hospital of Harbin Medical University, No.246 Xuefu Road, Nangang District, Harbin, 150001, China.
| | - Yue Yin
- Department of Oncology and Radiotherapy, The Second Affiliated Hospital of Harbin Medical University, No.246 Xuefu Road, Nangang District, Harbin, 150001, China
| | - Mengqi Sun
- Department of Oncology and Radiotherapy, Shenzhen People's Hospital, Shenzhen, 518020, China
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Sosa LDV, Picech F, Perez P, Gutierrez S, Leal RB, De Paul A, Torres A, Petiti JP. Regulation of FGF2-induced proliferation by inhibitory GPCR in normal pituitary cells. Front Endocrinol (Lausanne) 2023; 14:1183151. [PMID: 37576961 PMCID: PMC10414184 DOI: 10.3389/fendo.2023.1183151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 07/13/2023] [Indexed: 08/15/2023] Open
Abstract
Introduction Intracellular communication is essential for the maintenance of the anterior pituitary gland plasticity. The aim of this study was to evaluate whether GPCR-Gαi modulates basic fibroblast growth factor (FGF2)-induced proliferative activity in normal pituitary cell populations. Methods Anterior pituitary primary cell cultures from Wistar female rats were treated with FGF2 (10ng/mL) or somatostatin analog (SSTa, 100nM) alone or co-incubated with or without the inhibitors of GPCR-Gαi, pertussis toxin (PTX, 500nM), MEK inhibitor (U0126, 100µM) or PI3K inhibitor (LY 294002, 10 μM). Results FGF2 increased and SSTa decreased the lactotroph and somatotroph BrdU uptak2e (p<0.05) whereas the FGF2-induced S-phase entry was prevented by SSTa co-incubation in both cell types, with these effects being reverted by PTX, U0126 or LY294002 pre-incubation. The inhibition of lactotroph and somatotroph mitosis was associated with a downregulation of c-Jun expression, a decrease of phosphorylated (p) ERK and pAKT. Furthermore, SSTa was observed to inhibit the S-phase entry induced by FGF2, resulting in a further increase in the number of cells in the G1 phase and a concomitant reduction in the number of cells in the S phases (p< 0.05), effects related to a decrease of cyclin D1 expression and an increase in the expression of the cell cycle inhibitors p27 and p21. Discussion In summary, the GPCR-Gαi activated by SSTa blocked the pro-proliferative effect of FGF2 in normal pituitary cells via a MEK-dependent mechanism, which acts as a mediator of both anti and pro-mitogenic signals, that may regulate the principal effectors of the G1 to S-phase transition.
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Affiliation(s)
- Liliana del V. Sosa
- Universidad Nacional de Córdoba, Facultad de Ciencias Médicas, Centro de Microscopía Electrónica, Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas Técnicas (CONICET), Instituto de Investigaciones en Ciencias de la Salud (INICSA), Córdoba, Argentina
| | - Florencia Picech
- Universidad Nacional de Córdoba, Facultad de Ciencias Médicas, Centro de Microscopía Electrónica, Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas Técnicas (CONICET), Instituto de Investigaciones en Ciencias de la Salud (INICSA), Córdoba, Argentina
| | - Pablo Perez
- Universidad Nacional de Córdoba, Facultad de Ciencias Médicas, Centro de Microscopía Electrónica, Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas Técnicas (CONICET), Instituto de Investigaciones en Ciencias de la Salud (INICSA), Córdoba, Argentina
| | - Silvina Gutierrez
- Universidad Nacional de Córdoba, Facultad de Ciencias Médicas, Centro de Microscopía Electrónica, Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas Técnicas (CONICET), Instituto de Investigaciones en Ciencias de la Salud (INICSA), Córdoba, Argentina
| | - Rodrigo Bainy Leal
- Universidade Federal de Santa Catarina, Florianópolis, Departamento de Bioquímica e Programa de Pós-graduação em Bioquímica, Centro de Ciências Biológicas, Santa Catarina, Brazil
| | - Ana De Paul
- Universidad Nacional de Córdoba, Facultad de Ciencias Médicas, Centro de Microscopía Electrónica, Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas Técnicas (CONICET), Instituto de Investigaciones en Ciencias de la Salud (INICSA), Córdoba, Argentina
| | - Alicia Torres
- Universidad Nacional de Córdoba, Facultad de Ciencias Médicas, Centro de Microscopía Electrónica, Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas Técnicas (CONICET), Instituto de Investigaciones en Ciencias de la Salud (INICSA), Córdoba, Argentina
| | - Juan Pablo Petiti
- Universidad Nacional de Córdoba, Facultad de Ciencias Médicas, Centro de Microscopía Electrónica, Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas Técnicas (CONICET), Instituto de Investigaciones en Ciencias de la Salud (INICSA), Córdoba, Argentina
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Jia X, Chen X, Gao C, Wang H, Yang C, Jiang LH, Fan Y. Functional cooperation between IK Ca and TRPC1 channels regulates serum-induced vascular smooth muscle cell proliferation via mediating Ca 2+ influx and ERK1/2 activation. Cell Prolif 2022; 56:e13385. [PMID: 36562293 PMCID: PMC10068941 DOI: 10.1111/cpr.13385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 12/06/2022] [Accepted: 12/08/2022] [Indexed: 12/24/2022] Open
Abstract
The increased proliferation of vascular smooth muscle cells (VSMCs) contributes to the pathogenesis of vascular diseases. The intermediate conductance calcium-activated potassium (IKCa ) channel plays a critical role in VSMC proliferation by raising the intracellular calcium concentration ([Ca2+ ]i ), but the underlying mechanism is still not unclear. Here we investigated the cooperation between IKCa and transient receptor potential canonical 1 (TRPC1) channels in mediating extracellular Ca2+ entry, which in turn activates downstream Ca2+ signalling in the regulation of VSMC proliferation using serum-induced cell proliferation model. Serum-induced cell proliferation was accompanied with up-regulation of IKCa expression and an increase in [Ca2+ ]i . Serum-induced cell proliferation and increase in [Ca2+ ]i were suppressed by IKCa inhibition with TRAM-34 or IKCa knockdown. Serum-induced cell proliferation was strongly reduced by the removal of extracellular Ca2+ with EGTA or intracellular Ca2+ with BAPTA-AM and, additionally, by TRPC1 knockdown. Moreover, the increase in [Ca2+ ]i induced by serum or by IKCa activation with 1-EBIO was attenuated by TRPC1 knockdown. Finally, serum induced ERK1/2 activation, which was attenuated by treatment with TRAM-34 or BAPTA-AM, as well as TRPC1 knockdown. Consistently, serum-induced cell proliferation was suppressed by ERK1/2 inhibition with PD98059. Taken together, these results suggest that the IKCa and TRPC1 channels cooperate in mediating Ca2+ influx that activates the ERK1/2 pathway to promote cell proliferation, thus providing new mechanistic insights into VSMC proliferation.
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Affiliation(s)
- Xiaoling Jia
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, and with the School of Engineering Medicine, Beihang University, Beijing, China
| | - Xinlan Chen
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, and with the School of Engineering Medicine, Beihang University, Beijing, China
| | - Chao Gao
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, and with the School of Engineering Medicine, Beihang University, Beijing, China
| | - Haikun Wang
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, and with the School of Engineering Medicine, Beihang University, Beijing, China
| | - Chengxi Yang
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, and with the School of Engineering Medicine, Beihang University, Beijing, China
| | - Lin-Hua Jiang
- Sino-UK Joint Laboratory of Brain Function and Injury of Henan Province, and Department of Physiology and Pathophysiology, Xinxiang Medical University, Xinxiang, China.,A4245-Transplantation, Immunology and Inflammation, Faculty of Medicine, University of Tours, Tours, France.,School of Biomedical Sciences, Faculty of Biological Sciences, University of Leeds, Leeds, UK
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, and with the School of Engineering Medicine, Beihang University, Beijing, China
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Shu C, Hou L, Chen Q, Zhu T, Yang J, Luo X, Su Y, Wang Y. Irradiation with a red light-emitting diode enhances the proliferation of stem cells of apical papilla via the ERK5 signalling pathway. Lasers Med Sci 2022; 37:2259-2268. [PMID: 35022873 DOI: 10.1007/s10103-021-03492-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 12/06/2021] [Indexed: 11/27/2022]
Abstract
This Querystudy aimed to investigate the effects of low-energy red light-emitting diode (LED) irradiation on the proliferation of stem cells from apical papilla (SCAPs) and preliminarily elucidated the underlying molecular mechanisms. SCAPs were isolated and identified in vitro. The light source was a 10 W red LED with continuous output and a wavelength of 600-700 nm. SCAPs were irradiated with 0 (control group), 0.5 J/cm2, 1 J/cm2, 3 J/cm2, or 5 J/cm2. Cell Counting Kit-8 (CCK-8) assays were used to analyze cell proliferation rates and determine the most effective concentration of extracellular signal-regulated kinase 5 (ERK5) blocker, BIX02189. A real-time polymerase chain reaction (RT-PCR) was carried out to determine the involvement of the ERK5 signalling pathway and proliferation-associated genes (C-Jun, Jun B, and Cyclin D1). 5-Ethynyl-2'-deoxyuridine (EDU) was used to analyze cell cycle kinetic parameters. CCK-8 assay results suggested that SCAPs in red LED groups exhibited a higher proliferation rate than those in the control group, and 10 μmol/L BIX02189 was the most effective blocker. The RT-PCR results demonstrate that red LEDs upregulated the expression of the ERK5, C-Jun, Jun B, and Cyclin D1 genes, and BIX02189 successfully blocked the ERK5 signalling pathway. The results of EdU staining indicated that red LED promoted DNA synthesis activity and that BIX02189 suppressed cells into S phase. Red LEDs irradiation enhances the proliferation of SCAPs via the ERK5 signalling pathway by upregulating the expression of C-Jun, Jun B, and Cyclin D1.
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Affiliation(s)
- Chunxia Shu
- School of Stomatology Southwest Medical University, Lu Zhou, 646000, China
- Suining First People's Hospital, Suining, 629000, China
| | - Lan Hou
- School of Stomatology Southwest Medical University, Lu Zhou, 646000, China
| | - Qiang Chen
- The TCM Hospital of Longquanyi District, Chengdu, 610100, China
| | - Tingting Zhu
- School of Stomatology of Qingdao University, Qingdao, 266003, China
| | - Juan Yang
- School of Stomatology Southwest Medical University, Lu Zhou, 646000, China
| | - Xiang Luo
- School of Stomatology Southwest Medical University, Lu Zhou, 646000, China
| | - Yutong Su
- School of Stomatology Southwest Medical University, Lu Zhou, 646000, China
| | - Yao Wang
- The Affiliated Stomatology Hospital of Southwest Medical University, Lu Zhou, 646000, China.
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Fukutin Protein Participates in Cell Proliferation by Enhancing Cyclin D1 Expression through Binding to the Transcription Factor Activator Protein-1: An In Vitro Study. Int J Mol Sci 2021; 22:ijms222212153. [PMID: 34830034 PMCID: PMC8622492 DOI: 10.3390/ijms222212153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 10/30/2021] [Accepted: 11/08/2021] [Indexed: 11/16/2022] Open
Abstract
The causative gene of Fukuyama congenital muscular dystrophy (fukutin) is involved in formation of the basement membrane through glycosylation of alpha-dystroglycan. However, there are other proposed functions that have not been fully understood. Using cultured astrocytes (1321N1), we found nuclear localization of fukutin and a positive relationship between fukutin expression and cell proliferation. Among potential proteins regulating cell proliferation, we focused on cyclin D1, by reverse-transcription polymerase chain reaction, Western blotting, immunocytochemistry, enzyme-linked immunosorbent assay (ELISA), and sandwich ELISA. Expression of cyclin D1 was significantly downregulated by fukutin knockdown and significantly upregulated by fukutin overexpression. Moreover, fukutin was proven to bind to the activator protein-1 (AP-1) binding site of cyclin D1 promoter, as well as the AP-1 component c-Jun. The c-Jun phosphorylation status was not significantly influenced by knockdown or overexpression of fukutin. The present results provide in vitro evidence for a novel function of fukutin, which participates in cell proliferation by enhancing cyclin D1 expression through forming a complex with AP-1. It is likely that fukutin is a potential cofactor of AP-1.
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Tian X, Xue Y, Xie G, Zhou Y, Xiao H, Ding F, Zhang M. (-)-Epicatechin ameliorates cigarette smoke-induced lung inflammation via inhibiting ROS/NLRP3 inflammasome pathway in rats with COPD. Toxicol Appl Pharmacol 2021; 429:115674. [PMID: 34403689 DOI: 10.1016/j.taap.2021.115674] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 07/29/2021] [Accepted: 08/05/2021] [Indexed: 11/19/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) with increased morbidity and mortality is a worldwide healthcare challenge closely associated with cigarette smoking (CS). Currently, there is no effective therapeutic strategy to control inflammation in COPD patients. The present study tested the protective effects of (-)-Epicatechin (EC), a type of flavonoid, on CS-induced COPD and the underlying mechanism. Also, EC repressed the production of reactive oxygen species (ROS) and improved human bronchial epithelial cell viability after cigarette smoke extract (CSE) treatment. Further studies demonstrated that EC promotes ubiquitin-mediated Keap1 degradation by upregulating tripartite motif-containing protein 25 (TRIM25) expression and enhances the nuclear localization of Nrf2 protein. Also, EC dramatically inhibits the activation of NLRP3 inflammasome and reduces the CSE-induced pyroptosis, as indicated by decreasing lactate dehydrogenase release and the number of caspase-1-positive cells. Importantly, Nrf2 knockdown reversed the protective effect of EC on human bronchial epithelial cells, at least partially. Consistent with the results in vitro, EC inhibits the activation of NLRP3 inflammasome and relieves the CS-induced lung inflammation, as evident from decreased interleukin (IL)-1β and IL-18 secretion in a COPD rat model. In conclusion, this study revealed the protective effect of EC on experimental COPD rats and elucidated the mechanism of EC promoting Nrf2 activity, which might provide a novel therapeutic strategy for COPD.
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Affiliation(s)
- Xue Tian
- Department of Respiratory and Critical Care Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine,100 Haining Road, Shanghai 200080, PR China
| | - Yishu Xue
- Department of Respiratory and Critical Care Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine,100 Haining Road, Shanghai 200080, PR China
| | - Guogang Xie
- Department of Respiratory and Critical Care Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine,100 Haining Road, Shanghai 200080, PR China
| | - Yan Zhou
- Department of Respiratory and Critical Care Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine,100 Haining Road, Shanghai 200080, PR China
| | - Hui Xiao
- Department of Respiratory and Critical Care Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine,100 Haining Road, Shanghai 200080, PR China
| | - Fengming Ding
- Department of Respiratory and Critical Care Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine,100 Haining Road, Shanghai 200080, PR China
| | - Min Zhang
- Department of Respiratory and Critical Care Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine,100 Haining Road, Shanghai 200080, PR China..
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7
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Wang W, Zhao T, Geng K, Yuan G, Chen Y, Xu Y. Smoking and the Pathophysiology of Peripheral Artery Disease. Front Cardiovasc Med 2021; 8:704106. [PMID: 34513948 PMCID: PMC8429807 DOI: 10.3389/fcvm.2021.704106] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Accepted: 07/31/2021] [Indexed: 12/15/2022] Open
Abstract
Smoking is one of the most important preventable factors causing peripheral artery disease (PAD). The purpose of this review is to comprehensively analyze and summarize the pathogenesis and clinical characteristics of smoking in PAD based on existing clinical, in vivo, and in vitro studies. Extensive searches and literature reviews have shown that a large amount of data exists on the pathological process underlying the effects of cigarette smoke and its components on PAD through various mechanisms. Cigarette smoke extracts (CSE) induce endothelial cell dysfunction, smooth muscle cell remodeling and macrophage phenotypic transformation through multiple molecular mechanisms. These pathological changes are the molecular basis for the occurrence and development of peripheral vascular diseases. With few discussions on the topic, we will summarize recent insights into the effect of smoking on regulating PAD through multiple pathways and its possible pathogenic mechanism.
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Affiliation(s)
- Weiming Wang
- The State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China.,Department of General Surgery (Vascular Surgery), The Affiliated Hospital of Southwest Medical University, Luzhou, China.,Key Laboratory of Medical Electrophysiology, Ministry of Education and Medical Electrophysiological Key Laboratory of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, China
| | - Tingting Zhao
- The State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Kang Geng
- The State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Gang Yuan
- The State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Yue Chen
- Department of Nuclear Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Youhua Xu
- The State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
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Yamaguchi R, Guo X, Zheng J, Zhang J, Han J, Shioya A, Uramoto H, Mochizuki T, Yamada S. PRDX4 Improved Aging-Related Delayed Wound Healing in Mice. J Invest Dermatol 2021; 141:2720-2729. [PMID: 34029576 DOI: 10.1016/j.jid.2021.04.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 03/15/2021] [Accepted: 04/14/2021] [Indexed: 01/09/2023]
Abstract
Aging-related delayed wound healing is an issue of concern worldwide. Oxidative stress is involved in wound healing. Antioxidative enzymes have various roles in this process. PRDX4, a member of the PRDX family, is upregulated after injury. To investigate the effects of PRDX4 on aging-related wound healing, we subjected C57BL/6J (wild-type), human Prdx4‒transgenic (i.e., hPrdx4+/+), Prdx4-knockout (i.e., Prdx4-/y) mice of three age groups (young, adult, and aged) to skin wound formation. The overexpression of PRDX4 accelerated wound healing in adult and aged mice but not in young mice. Aged hPrdx4+/+ mice showed reduced oxidative stress and inflammation, lower numbers of neutrophils, increased macrophage infiltration, increased angiogenesis, and increased GF levels. The granulation tissue of adult and aged hPrdx4+/+ mice was richer in fibroblasts than that in the matched wild-type mice. PRDX4 deficiency was associated with mortality in adult and aged mice. In vitro, the overexpression of PRDX4 promoted the proliferation and migration of fibroblasts derived from adult or aged mice and made fibroblasts more resistant to the cytotoxicity of hydrogen peroxide. PRDX4 is essential for wound healing and can improve the healing process from multiple aspects, suggesting that it may be very beneficial to wound treatment, especially for the elderly.
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Affiliation(s)
- Reimon Yamaguchi
- Department of Pathology and Laboratory Medicine, School of Medicine, Kanazawa Medical University, Uchinada, Japan; Department of Dermatology, School of Medicine, Kanazawa Medical University, Uchinada, Japan
| | - Xin Guo
- Department of Pathology and Laboratory Medicine, School of Medicine, Kanazawa Medical University, Uchinada, Japan.
| | - Jianbo Zheng
- Department of Pathology and Laboratory Medicine, School of Medicine, Kanazawa Medical University, Uchinada, Japan
| | - Jing Zhang
- Department of Pathology and Laboratory Medicine, School of Medicine, Kanazawa Medical University, Uchinada, Japan
| | - Jia Han
- Department of Pathology and Laboratory Medicine, School of Medicine, Kanazawa Medical University, Uchinada, Japan
| | - Akihiro Shioya
- Department of Pathology and Laboratory Medicine, School of Medicine, Kanazawa Medical University, Uchinada, Japan
| | - Hidetaka Uramoto
- Department of Thoracic Surgery, School of Medicine, Kanazawa Medical University, Uchinada, Japan
| | - Takashi Mochizuki
- Department of Dermatology, School of Medicine, Kanazawa Medical University, Uchinada, Japan
| | - Sohsuke Yamada
- Department of Pathology and Laboratory Medicine, School of Medicine, Kanazawa Medical University, Uchinada, Japan
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Zhao Z, Wang X, Zhang R, Ma B, Niu S, Di X, Ni L, Liu C. Melatonin attenuates smoking-induced atherosclerosis by activating the Nrf2 pathway via NLRP3 inflammasomes in endothelial cells. Aging (Albany NY) 2021; 13:11363-11380. [PMID: 33839695 PMCID: PMC8109127 DOI: 10.18632/aging.202829] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 01/07/2021] [Indexed: 12/30/2022]
Abstract
Substantial evidence suggests that the effects of smoking in atherosclerosis are associated with inflammation mediated by endothelial cells. However, the mechanisms and potential drug therapies for smoking-induced atherosclerosis remain to be clarified. Considering that melatonin exerts beneficial effects in cardiovascular diseases, we examined its effects on cigarette smoke-induced vascular injury. We found that cigarette smoke extract (CSE) treatment induced NLRP3-related pyroptosis in human aortic endothelial cells (HAECs). CSE also induced ROS generation and upregulated the Nrf2 pathway in HAECs. Furthermore, pretreatment of HAECs with Nrf2-specific siRNA and an Nrf2 activator revealed that Nrf2 can inhibit CSE-induced ROS/NLRP3 activation. Nrf2 also improved cell viability and the expression of VEGF and eNOS in CSE-treated HAECs. In balloon-induced carotid artery injury model rats exposed to cigarette smoke, melatonin treatment reduced intimal hyperplasia in the carotid artery. Mechanistic studies revealed that compared with the control group, Nrf2 activation was increased in the melatonin group, whereas ROS levels and the NLRP3 inflammasome pathway were inhibited. These results reveal that melatonin might effectively protect against smoking-induced vascular injury and atherosclerosis through the Nrf2/ROS/NLRP3 signaling pathway. Overall, these observations provide compelling evidence for the clinical use of melatonin to reduce smoking-related inflammatory vascular injury and atherosclerosis.
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Affiliation(s)
- Zhewei Zhao
- Department of Vascular Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Xuebin Wang
- Department of Vascular Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Rui Zhang
- Department of Vascular Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Baitao Ma
- Department of Vascular Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Shuai Niu
- Department of Vascular Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Xiao Di
- Department of Vascular Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Leng Ni
- Department of Vascular Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Changwei Liu
- Department of Vascular Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
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Tanaka Y, Murata M, Oda Y, Furue M, Ito T. Nectin Cell Adhesion Molecule 4 (NECTIN4) Expression in Cutaneous Squamous Cell Carcinoma: A New Therapeutic Target? Biomedicines 2021; 9:biomedicines9040355. [PMID: 33808400 PMCID: PMC8067104 DOI: 10.3390/biomedicines9040355] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 03/22/2021] [Accepted: 03/26/2021] [Indexed: 12/24/2022] Open
Abstract
Cutaneous squamous cell carcinoma (cSCC) is the second most common skin cancer, and its incidence is rising because of the aging population. Nectin cell adhesion molecule 4 (NECTIN4) is involved in the progression of tumors and has attracted interest as a potential therapeutic target. However, little is known about the expression and significance of NECTIN4 in cSCC. The aim of this study was to determine the expression and function of NECTIN4 in cSCC. Immunohistological NECTIN4 expression was investigated in tissues from 34 cSCC patients. Using an A431 human SCC cell line, the role of NECTIN4 in the regulation of cell–cell attachment and migration and proliferation was assessed. NECTIN4 was expressed in most cSCC tissues and on the plasma membrane of A431 cells. Silencing of NECTIN4 prevented cell–cell attachment and induced the expression migration-related molecules, leading to an increase in cell migration. Knockdown of NECTIN4 downregulated extracellular signal-regulated kinase signaling, decreased cyclin D1 expression, and inhibited cell proliferation. These results show that NECTIN4 is expressed in cSCC and functions in the regulation of cell–cell interactions, as well as in the migration and proliferation of SCC cells. NECTIN4-targeted therapy may serve as a novel and promising treatment for cSCC.
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Affiliation(s)
- Yuka Tanaka
- Department of Dermatology, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan; (Y.T.); (M.M.); (M.F.)
| | - Maho Murata
- Department of Dermatology, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan; (Y.T.); (M.M.); (M.F.)
| | - Yoshinao Oda
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan;
| | - Masutaka Furue
- Department of Dermatology, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan; (Y.T.); (M.M.); (M.F.)
- Research and Clinical Center for Yusho and Dioxin, Kyushu University Hospital, Fukuoka 812-8582, Japan
| | - Takamichi Ito
- Department of Dermatology, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan; (Y.T.); (M.M.); (M.F.)
- Correspondence: ; Tel.: +81-92-642-5585
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11
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Duan H, Feng X, Huang X. Effects of insulin on the proliferation and global gene expression profile of A7r5 cells. Mol Biol Rep 2021; 48:1205-1215. [PMID: 33555531 DOI: 10.1007/s11033-021-06200-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 01/28/2021] [Indexed: 11/28/2022]
Abstract
Insulin contributes to atherosclerosis, but the potential mechanisms are kept unclear. In this study, insulin promoted proliferation of A7r5 cells. Microarray analysis indicated that insulin significantly changed 812 probe sets of genes, including 405 upregulated and 407 downregulated ones (fold change ≥ 1.5 or ≤ - 1.5; p < 0.05). Gene ontology analysis showed that the differentially expressed genes were involved in a number of processes, including the regulation of cell proliferation/migration/cycle, apoptotic process, oxidative stress, inflammatory response, mitogen-activated protein kinase (MAPK) activity, lipid metabolic process and extracellular matrix organization. Moreover, Kyoto Encyclopedia of Genes and Genomes pathway analysis indicated that the genes were involved in biosynthesis of amino acids, fatty acid metabolism, glycolysis/gluconeogenesis, metabolic pathways, regulation of autophagy, cell cycle and apoptosis, as well as the PI3K-Akt, MAPK, mTOR and NF-κB signaling pathways. Additionally, insulin enhanced phosphorylation of MAPK kinase 1/2 and Akt, suggesting activation of the MAPK and PI3K-Akt signaling pathways. Inhibition of ERK1/2 reduced insulin-induced proliferation. This study revealed the proliferative effects of insulin and displayed global gene expression profile of A7r5 cells stimulated by insulin, suggesting new insight into the molecular pathogenesis of insulin promoting atherosclerosis.
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Affiliation(s)
- Huiming Duan
- Guangxi Key Laboratory of Chinese Medicine Foundation Research, Guangxi University of Chinese Medicine, Nanning, 530200, China.,Guangxi Scientific Experimental Center of Traditional Chinese Medicine, Guangxi University of Chinese Medicine, Nanning, 530200, China
| | - Xiaotao Feng
- Guangxi Key Laboratory of Chinese Medicine Foundation Research, Guangxi University of Chinese Medicine, Nanning, 530200, China. .,Guangxi Scientific Experimental Center of Traditional Chinese Medicine, Guangxi University of Chinese Medicine, Nanning, 530200, China.
| | - Xiaoqi Huang
- Laboratory of Medical Molecular Biology, The First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, 530023, China
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12
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Wang B, Chan YL, Zhou S, Saad S, Chen H, Oliver BG. Offspring sex affects the susceptibility to maternal smoking-induced lung inflammation and the effect of maternal antioxidant supplementation in mice. JOURNAL OF INFLAMMATION-LONDON 2020; 17:24. [PMID: 32774172 PMCID: PMC7409429 DOI: 10.1186/s12950-020-00253-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 07/30/2020] [Indexed: 02/08/2023]
Abstract
Background Cigarette smoke exposure (SE) during pregnancy is the largest modifiable risk factor for the development of lung disorders in offspring. We have previously shown that maternal L-Carnitine treatment can reduce the adverse impacts of maternal SE on renal and brain disorders in offspring. Here, we investigated the effect of maternal L-Carnitine supplementation on lung inflammatory pathways, autophagy, and mitophagy markers in the offspring in response to maternal SE. Methods Female BALB/c mice (8 weeks) were exposed to cigarette smoke for 6 weeks prior to mating, during gestation and lactation. Some of the SE dams were given L-Carnitine supplementation (1.5 mM in drinking water, SE + LC) during gestation and lactation. Lungs from the offspring were studied at birth and adulthood (13 weeks). Results At birth, in male offspring, there were increased levels of inflammatory markers (phosphorylated(p)-ERK1,2, p-P38 MAPK, p- NF-κB), and inflammasome marker (NLRP3), as well as mitophagy fission marker Drp-1 and autophagosome marker (LC3A/B-II) in the lung. Maternal L-Carnitine supplementation significantly reduced NLRP3 level. In contrast, maternal SE only increased IL1-β in female offspring, which was reversed by maternal L-Carnitine supplementation. At 13 weeks, there was an increase in LC3A/B-II and p- NF-κB in the male SE offspring with reduced p-JNK1,2, which were partially normalised by maternal L-Carnitine treatment. Female offspring were not affected by maternal SE at this age. Conclusion Maternal SE had adverse impacts on the male offspring’s lung, which were partially alleviated by maternal L-Carnitine supplementation. Females seem to be less affected by the adverse effects of maternal SE.
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Affiliation(s)
- Baoming Wang
- Faculty of Science, School of Life Sciences, University of Technology Sydney, Sydney, NSW 2007 Australia.,Respiratory Cellular and Molecular Biology, Woolcock Institute of Medical Research, The University of Sydney, Sydney, NSW 2037 Australia
| | - Yik Lung Chan
- Faculty of Science, School of Life Sciences, University of Technology Sydney, Sydney, NSW 2007 Australia.,Respiratory Cellular and Molecular Biology, Woolcock Institute of Medical Research, The University of Sydney, Sydney, NSW 2037 Australia
| | - Shengyu Zhou
- School of Nursing, Shandong University, Jinan, 250012 Shandong China.,Department of Pulmonary Medicine, Qilu Hospital of Shandong University, Jinan, 250012 Shandong China
| | - Sonia Saad
- Renal Group Kolling Institute, Royal North Shore Hospital, St Leonards, NSW 2065 Australia
| | - Hui Chen
- Faculty of Science, School of Life Sciences, University of Technology Sydney, Sydney, NSW 2007 Australia
| | - Brian G Oliver
- Faculty of Science, School of Life Sciences, University of Technology Sydney, Sydney, NSW 2007 Australia.,Respiratory Cellular and Molecular Biology, Woolcock Institute of Medical Research, The University of Sydney, Sydney, NSW 2037 Australia
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Ma B, Chen Y, Wang X, Zhang R, Niu S, Ni L, Di X, Han Q, Liu C. Cigarette smoke exposure impairs lipid metabolism by decreasing low-density lipoprotein receptor expression in hepatocytes. Lipids Health Dis 2020; 19:88. [PMID: 32384892 PMCID: PMC7210682 DOI: 10.1186/s12944-020-01276-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 05/01/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Cigarette smoke (CS) exposure impairs serum lipid profiles and the function of vascular endothelial cells, which accelerates the atherosclerosis. However, the precise mechanism and effect on the expression of low-density lipoprotein receptor (LDLR) in the liver by CS exposure is still unclear. METHODS In this study, adult male C57BL/6 J mice were divided into three groups, with one group being exposed to CS for 6 weeks. HepG2 cells were treated with CS extract at concentrations of 1, 2.5, 5, and 10%. RESULTS The serum levels of total cholesterol (TC), triglycerides (TGs), and low-density lipoprotein cholesterol (LDL-C) for the CS-exposure group were significantly higher than those in the control group (P < 0.05). Moreover, CS exposure decreased the LDLR expression in the hepatocytes and promoted inflammation in the blood vessel walls. Melatonin was intraperitoneally injected at 10 mg/kg/d for 6 weeks alongside CS exposure, and this significantly decreased the levels of TC, TGs, and LDL-C and decreased the expression of intercellular adhesion molecule-1 and the infiltration of cluster determinant 68-cells. In vitro, CS extract prepared by bubbling CS through phosphate-buffered saline decreased the LDLR expression in HepG2 cells in a time- and concentration-dependent manner, and this effect was prevented by pretreatment with 100 μM melatonin. CONCLUSIONS In conclusion, CS exposure impaired lipid metabolism and decreased LDLR expression in hepatocytes, and these effects could be prevented by melatonin supplementation. These findings implied that melatonin has the potential therapeutic applicability in the prevention of lipid metabolic disorder in smokers.
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MESH Headings
- Animals
- Antigens, CD/genetics
- Antigens, CD/metabolism
- Antigens, Differentiation, Myelomonocytic/genetics
- Antigens, Differentiation, Myelomonocytic/metabolism
- Antioxidants/pharmacology
- Cholesterol, HDL/blood
- Cholesterol, LDL/blood
- Cigarette Smoking/adverse effects
- Complex Mixtures/pharmacology
- Dyslipidemias/etiology
- Dyslipidemias/genetics
- Dyslipidemias/metabolism
- Dyslipidemias/prevention & control
- Gene Expression Regulation
- Hep G2 Cells
- Hepatocytes/drug effects
- Hepatocytes/metabolism
- Hepatocytes/pathology
- Humans
- Hypolipidemic Agents/pharmacology
- Intercellular Adhesion Molecule-1/genetics
- Intercellular Adhesion Molecule-1/metabolism
- Lipid Metabolism/drug effects
- Lipid Metabolism/genetics
- Liver/drug effects
- Liver/metabolism
- Liver/pathology
- Male
- Melatonin/pharmacology
- Mice
- Mice, Inbred C57BL
- Receptors, LDL/genetics
- Receptors, LDL/metabolism
- Triglycerides/blood
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Affiliation(s)
- Baitao Ma
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Yunfei Chen
- Medical Science Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Xuebin Wang
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Rui Zhang
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Shuai Niu
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Leng Ni
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Xiao Di
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Qin Han
- Medical Science Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Changwei Liu
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China.
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14
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Shang L, Wang K, Liu D, Qin S, Huang J, Zhao Y, Pang Y. TMEM16A regulates the cell cycle of pulmonary artery smooth muscle cells in high-flow-induced pulmonary arterial hypertension rat model. Exp Ther Med 2020; 19:3275-3281. [PMID: 32266023 PMCID: PMC7132240 DOI: 10.3892/etm.2020.8589] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 08/20/2019] [Indexed: 12/11/2022] Open
Abstract
High-flow-induced pulmonary arterial hypertension (PAH) has attained global notoriety, the mechanism of which remains elusive. The present study investigated the regulation of Anoctamin-1, also known as transmembrane member 16A (TMEM16A), in the cell cycle progression of pulmonary artery smooth muscle cells (PASMCs) from a PAH rat model induced by high pulmonary blood flow. A total of 30 Sprague-Dawley rats were randomly assigned into control, sham and shunt groups. A rat model of high pulmonary blood flow-induced PAH was established by surgery using abdominal aorta-inferior vena cava fistula. Right ventricular pressure, right ventricular hypertrophy index and pulmonary arteriole structural remodeling were assessed 11 weeks following operation. The cell cycle statuses of PASMCs was assessed via flow cytometry, whereas western blot analysis was performed to measure the expression of cyclin D1, CDK2, p27KIP and cyclin E in primary PASMCs isolated from rats. The expression of cyclin E and cyclin D1 was revealed to be increased in the shunt group compared with the control group, which was accompanied with an increased expression of TMEM16A in the shunt group. Changes in the ratio of PASMCs in the G0/G1, S and G2/M phases of cycle induced by PAH were reversed by TMEM16A knockdown. The expression of cyclin E and cyclin D1 in the shunt group was significantly higher compared with the control group in vitro, which was reversed by TMEM16A-siRNA transfection. In conclusion, TMEM16A may be involved in high pulmonary blood flow-induced PAH by regulating PASMC cell cycle progression.
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Affiliation(s)
- Lifeng Shang
- Department of Pediatrics, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guanxi 530021, P.R. China
| | - Kai Wang
- Department of Pediatrics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Dongli Liu
- Department of Pediatrics, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guanxi 530021, P.R. China
| | - Suyuan Qin
- Department of Pediatrics, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guanxi 530021, P.R. China
| | - Jinglin Huang
- Department of Pediatrics, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guanxi 530021, P.R. China
| | - Yijue Zhao
- Department of Pediatrics, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guanxi 530021, P.R. China
| | - Yusheng Pang
- Department of Pediatrics, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guanxi 530021, P.R. China
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15
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Wang X, Bian Y, Zhang R, Liu X, Ni L, Ma B, Zeng R, Zhao Z, Song X, Liu C. Melatonin alleviates cigarette smoke-induced endothelial cell pyroptosis through inhibiting ROS/NLRP3 axis. Biochem Biophys Res Commun 2019; 519:402-408. [DOI: 10.1016/j.bbrc.2019.09.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 09/04/2019] [Indexed: 01/29/2023]
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16
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Suliman HB, Nozik-Grayck E. Mitochondrial Dysfunction: Metabolic Drivers of Pulmonary Hypertension. Antioxid Redox Signal 2019; 31:843-857. [PMID: 30604624 PMCID: PMC6751393 DOI: 10.1089/ars.2018.7705] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Significance: Pulmonary hypertension (PH) is a progressive disease characterized by pulmonary vascular remodeling and lung vasculopathy. The disease displays progressive dyspnea, pulmonary artery uncoupling and right ventricular (RV) dysfunction. The overall survival rate is ranging from 28-72%. Recent Advances: The molecular events that promote the development of PH are complex and incompletely understood. Metabolic impairment has been proposed to contribute to the pathophysiology of PH with evidence for mitochondrial dysfunction involving the electron transport chain proteins, antioxidant enzymes, apoptosis regulators, and mitochondrial quality control. Critical Issues: It is vital to characterize the mechanisms by which mitochondrial dysfunction contribute to PH pathogenesis. This review focuses on the currently available publications that supports mitochondrial mechanisms in PH pathophysiology. Future Directions: Further studies of these metabolic mitochondrial alterations in PH could be viable targets of diagnostic and therapeutic intervention.
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Affiliation(s)
- Hagir B Suliman
- Department of Anesthesiology, Duke University Medical Centers, Durham, North Carolina
| | - Eva Nozik-Grayck
- Department of Pediatrics, Cardiovascular Pulmonary Research Labs and Pediatric Critical Care Medicine, University of Colorado Denver, Aurora, Colorado
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17
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High Glucose-Induced ROS Production Stimulates Proliferation of Pancreatic Cancer via Inactivating the JNK Pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:6917206. [PMID: 30584464 PMCID: PMC6280312 DOI: 10.1155/2018/6917206] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 08/06/2018] [Accepted: 09/23/2018] [Indexed: 12/31/2022]
Abstract
Aberrant glucose metabolism of diabetes mellitus or hyperglycemia stimulates pancreatic tumorigenesis and progression. Hyperglycemic environment can increase the ROS level of tumors, but the role of upregulation of ROS levels in pancreatic cancer (PC) still remains controversial. Here, the same as other reports, we demonstrate that high glucose promoted pancreatic cancer cell growth and resulted in an increase in the level of ROS. However, it is interesting that the phosphorylation of JNK was reduced. When treating PC cells with N-acetyl-L-cysteine (NAC), the intracellular ROS generation is repressed, but the expression of phosphorylation of JNK and c-Jun increased. Moreover, the JNK inhibitor SP600125 significantly promoted cell proliferation and suppressed cell apoptosis of pancreatic cancer cells under high glucose conditions. Collectively, high levels of ROS induced by high glucose conditions stimulated the proliferation of pancreatic cancer cells, and it may be achieved by inactivating the JNK pathway.
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18
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Shi J, Ma X, Su Y, Song Y, Tian Y, Yuan S, Zhang X, Yang D, Zhang H, Shuai J, Cui W, Ren F, Plikus MV, Chen Y, Luo J, Yu Z. MiR-31 Mediates Inflammatory Signaling to Promote Re-Epithelialization during Skin Wound Healing. J Invest Dermatol 2018; 138:2253-2263. [PMID: 29605672 PMCID: PMC6153075 DOI: 10.1016/j.jid.2018.03.1521] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 03/16/2018] [Accepted: 03/19/2018] [Indexed: 11/18/2022]
Abstract
Wound healing is essential for skin repair after injury, and it consists of hemostasis, inflammation, re-epithelialization, and remodeling phases. Successful re-epithelialization, which relies on proliferation and migration of epidermal keratinocytes, requires a reduction in tissue inflammation. Therefore, understanding the molecular mechanism underlying the transition from inflammation to re-epithelialization will help to better understand the principles of wound healing. Currently, the in vivo functions of specific microRNAs in wound healing are not fully understood. We observed that miR-31 expression is strongly induced in wound edge keratinocytes, and is directly regulated by the activity of NF-κB and signal transducer and activator of transcription 3 signaling pathways during the inflammation phase. We used miR-31 loss-of-function mouse models to demonstrate that miR-31 promotes keratinocyte proliferation and migration. Mechanistically, miR-31 activates the Ras/mitogen-activated protein kinase signaling by directly targeting Rasa1, Spred1, Spred2, and Spry4, which are negative regulators of the Ras/mitogen-activated protein kinase pathway. Knockdown of these miR-31 targets at least partially rescues the delayed scratch wound re-epithelialization phenotype observed in vitro in miR-31 knockdown keratinocytes. Taken together, these findings identify miR-31 as an important cell-autonomous mediator during the transition from inflammation to re-epithelialization phases of wound healing, suggesting a therapeutic potential for miR-31 in skin injury repair.
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Affiliation(s)
- Jianyun Shi
- Beijing Advanced Innovation Center for Food Nutrition and Human Health and State Key Laboratories for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Xianghui Ma
- Beijing Advanced Innovation Center for Food Nutrition and Human Health and State Key Laboratories for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Yang Su
- Beijing Advanced Innovation Center for Food Nutrition and Human Health and State Key Laboratories for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Yongli Song
- Beijing Advanced Innovation Center for Food Nutrition and Human Health and State Key Laboratories for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Yuhua Tian
- Beijing Advanced Innovation Center for Food Nutrition and Human Health and State Key Laboratories for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Shukai Yuan
- Department of Biochemistry and Molecular Biology, Basic Medical College, Tianjin Medical University, Tianjin, China
| | - Xiuqing Zhang
- College of Food Science and Nutritional Engineering, China Agricultural University, Haidian District, Beijing, China
| | - Dong Yang
- College of Food Science and Nutritional Engineering, China Agricultural University, Haidian District, Beijing, China
| | - Hao Zhang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Haidian District, Beijing, China
| | - Jianwei Shuai
- Department of Physics and State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, Xiamen University, Xiamen, China
| | - Wei Cui
- Beijing Advanced Innovation Center for Food Nutrition and Human Health and State Key Laboratories for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China; Institute of Reproductive and Developmental Biology, Faculty of Medicine, Imperial College London, London, UK
| | - Fazheng Ren
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Haidian District, Beijing, China
| | - Maksim V Plikus
- Department of Developmental and Cell Biology, Sue and Bill Gross Stem Cell Research Center, Center for Complex Biological Systems, University of California Irvine, Irvine, California, USA
| | - Yaoxing Chen
- Laboratory of Anatomy of Domestic Animals, College of Animal Medicine, China Agricultural University, Beijing, China.
| | - Jie Luo
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Haidian District, Beijing, China.
| | - Zhengquan Yu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health and State Key Laboratories for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China.
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Oxymatrine synergistically enhances antitumor activity of oxaliplatin in colon carcinoma through PI3K/AKT/mTOR pathway. Apoptosis 2018; 21:1398-1407. [PMID: 27671687 DOI: 10.1007/s10495-016-1297-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Oxymatrine (OMT), one of the main active components of extracts from the dry roots of Sophora flavescens, has been reported to possess many pharmacological properties including cancer-preventive and anti-cancer effects. The aim of the present study is to explore the efficiency of combination therapy with OMT and oxaliplatin (OXA) and identify the in vitro and in vivo cytotoxicity on colon cancer lines (HT29 and SW480) and mice model. Cells were treated with OMT and/or OXA and subjected to cell viability, colony formation, apoptosis, cell cycle, western blotting, xenograft tumorigenicity assay and immunohistochemistry. The results demonstrated that OMT and OXA inhibited the proliferation of colon cancer cells, and combination therapy of OMT and OXA resulted in a combination index < 1, indicating a synergistic effect. Co-treatment with OMT and OXA caused G0/G1 phase arrest by upregulating P21, P27 and downregulating cyclin D, and induced apoptosis through decreasing the expression of p-PI3K, p-AKT, p-mTOR, p-p70S6K. In addition, pretreatment with a specific PI3K/AKT activator (IGF-1) significantly neutralized the pro-apoptotic activity of OXA + OMT, demonstrating the important role of PI3K/AKT in this process. Moreover, in nude mice model, co-treatment displayed more efficient inhibition of tumor weight and volume on SW480 xenograft mouse model than single-agent treatment with OXA or OMT. Immunohistochemistry analysis suggests the combinations greatly suppressed tumor proliferation, which consistent with our in vitro results. In conclusion, our findings highlight that the combination therapy with OMT and OXA exerted synergistic antitumor effects in colon cancer cells through PI3K/AKT/mTOR pathway and combination treatment with OMT and OXA would be a promising therapeutic strategy for colon carcinoma treatment.
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Metformin synergistically enhances antitumor activity of cisplatin in gallbladder cancer via the PI3K/AKT/ERK pathway. Cytotechnology 2017; 70:439-448. [PMID: 29110119 DOI: 10.1007/s10616-017-0160-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Accepted: 10/26/2017] [Indexed: 12/11/2022] Open
Abstract
Metformin (Met) is a widely used antidiabetic drug and has demonstrated interesting anticancer effects in various cancer models, alone or in combination with chemotherapeutic drugs. The aim of the present study is to investigate the synergistic effect of Met with cisplatin (Cis) on the tumor growth inhibition of gallbladder cancer cells (GBC-SD and SGC-996) and explore the underlying mechanism. Cells were treated with Met and/or Cis and subjected to cell viability, colony formation, apoptosis, cell cycle, western blotting, xenograft tumorigenicity assay and immunohistochemistry. The results demonstrated that Met and Cis inhibited the proliferation of gallbladder cancer cells, and combination treatment with Met and Cis resulted in a combination index < 1, indicating a synergistic effect. Co-treatment with Met and Cis caused G0/G1 phase arrest by upregulating P21, P27 and downregulating CyclinD1, and induced apoptosis through decreasing the expression of p-PI3K, p-AKT, and p-ERK. In addition, pretreatment with a specific AKT activator (IGF-1) significantly neutralized the pro-apoptotic activity of Met + Cis, suggesting the key role of AKT in this process. More importantly, in nude mice model, Met and Cis in combination displayed more efficient inhibition of tumor weight and volume in the SGC-996 xenograft mouse model than Met or Cis alone. Immunohistochemistry analysis suggests the combinations greatly suppressed tumor proliferation, which is consistent with our in vitro results. In conclusion, our findings indicate that the combination therapy with Met and Cis exerted synergistic antitumor effects in gallbladder cancer cells through PI3K/AKT/ERK pathway, and combination treatment with Met and Cis would be a promising therapeutic strategy for gallbladder cancer patients.
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Ma JW, Zhang Y, Ye JC, Li R, Wen YL, Huang JX, Zhong XY. Tetrandrine Exerts a Radiosensitization Effect on Human Glioma through Inhibiting Proliferation by Attenuating ERK Phosphorylation. Biomol Ther (Seoul) 2017; 25:186-193. [PMID: 27829269 PMCID: PMC5340544 DOI: 10.4062/biomolther.2016.044] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 05/21/2016] [Accepted: 07/28/2016] [Indexed: 01/17/2023] Open
Abstract
Tetrandrine (Tet), a bisbenzylisoquinoline alkaloid, has been reported to have a radiosensitization effect on tumors. However, its effects on human glioma and the specific molecular mechanisms of these effects remain unknown. In this study, we demonstrated that Tet has a radiosensitization effect on human glioma cells. It has been hypothesized that Tet has a radiosensitization effect on glioma cells by affecting the glioma cell cycle and DNA repair mechanism and that ERK mediates these activities. Therefore, we conducted detailed analyses of the effects of Tet on the cell cycle by performing flow cytometric analysis and on DNA repair by detecting the expression of phosphorylated H2AX by immunofluorescence. We used western blot analysis to investigate the role of ERK in the effect of Tet on the cell cycle and DNA repair. The results revealed that Tet exerts its radiosensitization effect on glioma cells by inhibiting proliferation and decreasing the expression of phosphorylated ERK and its downstream proteins. In summary, our data indicate that ERK is involved in Tet-induced radiosensitization of glioma cells via inhibition of glioma cell proliferation or of the cell cycle at G0/G1 phase.
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Affiliation(s)
- Ji-Wei Ma
- Division of Pathology, Guangdong Province Key Laboratory of Molecular Immunology and Antibody Engineering, Medical College, Jinan University, Guangzhou 510632, China
| | - Yong Zhang
- Division of Pathology, Guangdong Province Key Laboratory of Molecular Immunology and Antibody Engineering, Medical College, Jinan University, Guangzhou 510632, China
| | - Ji-Cheng Ye
- Division of Pathology, Guangdong Province Key Laboratory of Molecular Immunology and Antibody Engineering, Medical College, Jinan University, Guangzhou 510632, China
| | - Ru Li
- Division of Pathology, Guangdong Province Key Laboratory of Molecular Immunology and Antibody Engineering, Medical College, Jinan University, Guangzhou 510632, China
| | - Yu-Lin Wen
- Division of Pathology, Guangdong Province Key Laboratory of Molecular Immunology and Antibody Engineering, Medical College, Jinan University, Guangzhou 510632, China
| | - Jian-Xian Huang
- Division of Pathology, Guangdong Province Key Laboratory of Molecular Immunology and Antibody Engineering, Medical College, Jinan University, Guangzhou 510632, China
| | - Xue-Yun Zhong
- Division of Pathology, Guangdong Province Key Laboratory of Molecular Immunology and Antibody Engineering, Medical College, Jinan University, Guangzhou 510632, China
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22
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Qiu F, Liang CL, Liu H, Zeng YQ, Hou S, Huang S, Lai X, Dai Z. Impacts of cigarette smoking on immune responsiveness: Up and down or upside down? Oncotarget 2017; 8:268-284. [PMID: 27902485 PMCID: PMC5352117 DOI: 10.18632/oncotarget.13613] [Citation(s) in RCA: 332] [Impact Index Per Article: 47.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Accepted: 11/12/2016] [Indexed: 01/08/2023] Open
Abstract
Cigarette smoking is associated with numerous diseases and poses a serious challenge to the current healthcare system worldwide. Smoking impacts both innate and adaptive immunity and plays dual roles in regulating immunity by either exacerbation of pathogenic immune responses or attenuation of defensive immunity. Adaptive immune cells affected by smoking mainly include T helper cells (Th1/Th2/Th17), CD4+CD25+ regulatory T cells, CD8+ T cells, B cells and memory T/B lymphocytes while innate immune cells impacted by smoking are mostly DCs, macrophages and NK cells. Complex roles of cigarette smoke have resulted in numerous diseases, including cardiovascular, respiratory and autoimmune diseases, allergies, cancers and transplant rejection etc. Although previous reviews have described the effects of smoking on various diseases and regional immunity associated with specific diseases, a comprehensive and updated review is rarely seen to demonstrate impacts of smoking on general immunity and, especially on major components of immune cells. Here, we aim to systematically and objectively review the influence of smoking on major components of both innate and adaptive immune cells, and summarize cellular and molecular mechanisms underlying effects of cigarette smoking on the immune system. The molecular pathways impacted by cigarette smoking involve NFκB, MAP kinases and histone modification. Further investigations are warranted to understand the exact mechanisms responsible for smoking-mediated immunopathology and to answer lingering questions over why cigarette smoking is always harmful rather than beneficial even though it exerts dual effects on immune responses.
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Affiliation(s)
- Feifei Qiu
- Section of Immunology, Guangdong Provincial Academy of Chinese Medical Sciences and Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, Guangdong, China
| | - Chun-Ling Liang
- Section of Immunology, Guangdong Provincial Academy of Chinese Medical Sciences and Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, Guangdong, China
| | - Huazhen Liu
- Section of Immunology, Guangdong Provincial Academy of Chinese Medical Sciences and Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, Guangdong, China
| | - Yu-Qun Zeng
- Department of Nephrology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Shaozhen Hou
- School of Chinese Materia Medica, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Song Huang
- School of Chinese Materia Medica, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Xiaoping Lai
- School of Chinese Materia Medica, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Zhenhua Dai
- Section of Immunology, Guangdong Provincial Academy of Chinese Medical Sciences and Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, Guangdong, China
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23
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Li H, Wang Y, Chen L, Han L, Li L, He H, Li Y, Huang N, Ren H, Pei F, Li G, Cheng J, Wang W. The role of MIF, cyclinD1 and ERK in the development of pulmonary hypertension in broilers. Avian Pathol 2016; 46:202-208. [PMID: 27706945 DOI: 10.1080/03079457.2016.1245409] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Pulmonary hypertension (PH) is a major disease in the broiler breeding industry. During PH, the pulmonary artery undergoes remodelling, which is caused by pulmonary vascular smooth muscle cell proliferation. CyclinD1 regulates cell proliferation. This study investigated the role of cyclinD1 in the development of PH in broilers, and which bioactivators and signalling pathway are involved in the pathological process. The PH group contained 3-4-week-old broilers with clinical PH, and the healthy group broilers from the same flock without PH. Histopathology indicated pulmonary arterial walls were thicker in the PH group compared with the healthy group. Target gene expressions of macrophage migration inhibitory factor (MIF), extracellular signal-regulated kinase (ERK), and cyclinD1 detected by quantitative real-time PCR were upregulated in the PH group compared with the healthy group. Immunohistochemistry showed MIF, phosphorylated ERK (p-ERK) and cyclinD1 were present on pulmonary vascular walls; MIF was present in the cytoplasm of arterial endothelial cells and smooth muscle cells; p-ERK and cyclinD1 were present in smooth muscle cell cytoplasm. Western blotting demonstrated that MIF, p-ERKand cyclinD1 levels were significantly higher (P < 0.01) in the PH group compared with the healthy group. In summary, increased MIF in PH broiler pulmonary arteries upregulated cyclinD1 via the ERK signalling pathway to induce pulmonary vascular smooth muscle cell proliferation, causing pulmonary artery remodelling and hypertension.
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Affiliation(s)
- Haoyun Li
- a College of Animal Science and Technology , Shanxi Agricultural University , Taigu , People's Republic of China
| | - Yanmei Wang
- a College of Animal Science and Technology , Shanxi Agricultural University , Taigu , People's Republic of China
| | - Lingli Chen
- a College of Animal Science and Technology , Shanxi Agricultural University , Taigu , People's Republic of China
| | - Lijuan Han
- a College of Animal Science and Technology , Shanxi Agricultural University , Taigu , People's Republic of China
| | - Lifang Li
- a College of Animal Science and Technology , Shanxi Agricultural University , Taigu , People's Republic of China
| | - Han He
- a College of Animal Science and Technology , Shanxi Agricultural University , Taigu , People's Republic of China
| | - Yuan Li
- a College of Animal Science and Technology , Shanxi Agricultural University , Taigu , People's Republic of China
| | - Nan Huang
- a College of Animal Science and Technology , Shanxi Agricultural University , Taigu , People's Republic of China
| | - Hao Ren
- a College of Animal Science and Technology , Shanxi Agricultural University , Taigu , People's Republic of China
| | - Fangying Pei
- a College of Animal Science and Technology , Shanxi Agricultural University , Taigu , People's Republic of China
| | - Guilan Li
- a College of Animal Science and Technology , Shanxi Agricultural University , Taigu , People's Republic of China
| | - Jia Cheng
- a College of Animal Science and Technology , Shanxi Agricultural University , Taigu , People's Republic of China
| | - Wenkui Wang
- a College of Animal Science and Technology , Shanxi Agricultural University , Taigu , People's Republic of China
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24
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Wu H, Cheng X, Ji X, He Y, Jing X, Wu H, Zhao R. Cortactin contributes to the tumorigenicity of colorectal cancer by promoting cell proliferation. Oncol Rep 2016; 36:3497-3503. [PMID: 27805253 DOI: 10.3892/or.2016.5207] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 06/25/2016] [Indexed: 11/06/2022] Open
Abstract
Cortactin is a scaffolding protein that regulates Arp2/3-mediated actin polymerization. We showed in a previous study that cortactin was highly expressed in human stage II-III colorectal cancer (CRC) tissues. In the present study, using colony formation and CCK-8 assays, we showed that overexpression of cortactin accelerated the proliferation of CRC cells. Flow cytometric assays revealed that cortactin promoted G1/S phase cell cycle transition. Later, we constructed the phosphorylation mutation of cortactin at the Tyr421 residue. Colony formation and CCK-8 assays showed that cortactin/Tyr421A lost its ability to promote cell proliferation. Western blot analysis indicated that cortactin activated cyclin D1, but not cortactin/Tyr421A. Further study in nude mice revealed that there was a greater decrease in both tumor volume and tumor weight in animals injected with SW480/cortactin/Tyr421A cells than in those injected with SW480/cortactin/WT cells. Thus, the present study demonstrates that the cortactin Tyr421 residue is required to promote cell proliferation both in vitro and in vivo.
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Affiliation(s)
- Huo Wu
- Department of General Surgery, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200025, P.R. China
| | - Xi Cheng
- Department of General Surgery, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200025, P.R. China
| | - Xiaopin Ji
- Department of General Surgery, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200025, P.R. China
| | - Yonggang He
- Department of General Surgery, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200025, P.R. China
| | - Xiaoqian Jing
- Department of General Surgery, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200025, P.R. China
| | - Haoxuan Wu
- Department of General Surgery, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200025, P.R. China
| | - Ren Zhao
- Department of General Surgery, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200025, P.R. China
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25
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Sun X, Wei B, Liu S, Guo C, Wu N, Liu Q, Sun MZ. Anxa5 mediates the in vitro malignant behaviours of murine hepatocarcinoma Hca-F cells with high lymph node metastasis potential preferentially via ERK2/p-ERK2/c-Jun/p-c-Jun(Ser73) and E-cadherin. Biomed Pharmacother 2016; 84:645-654. [PMID: 27697636 DOI: 10.1016/j.biopha.2016.09.086] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 09/10/2016] [Accepted: 09/22/2016] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE Annexin A5 (Anxa5) is associated with the progression of some cancers, while its role and regulation mechanism in tumor lymphatic metastasis is rarely reported. This study aims to investigate the influence of Anxa5 knockdown on the malignant behaviours of murine hepatocarcinoma Hca-F cell line with high lymph node metastatic (LNM) potential and the underlying regulation mechanism. METHODS RNA interfering was performed to silence Anxa5 in Hca-F. Monoclonal shRNA-Anxa5- Hca-F cells were obtained via G418 screening by limited dilution method. Quantitative real-time RT-PCR (qRT-PCR) and Western blotting (WB) were applied to measure Anxa5 expression levels. CCK-8, Boyden transwell-chamber and in situ LN adhesion assays were performed to explore the effects of Anxa5 on the proliferation, migration, invasion and adhesion capacities of Hca-F. WB and qRT-PCR were used to detect the level changes of key molecules in corresponding signal pathways. RESULTS We obtained two monoclonal shRNA-Anxa5-transfected Hca-F cell lines with stable knockdowns of Anxa5. Anxa5 knockdown resulted in significantly reduced proliferation, migration, invasion and in situ LN adhesion potentials of Hca-F in proportion to its knockdown extent. Anxa5 downregulation enhanced E-cadherin levels in Hca-F. Moreover, Anxa5 affected Hca-F behaviours specifically via ERK2/p-ERK2/c-Jun/p-c-Jun(Ser73) instead of p38MAPK/c-Jun, Jnk/c-Jun and AKT/c-Jun pathways. CONCLUSIONS Anxa5 mediates the in vitro malignant behaviours of murine hepatocarcinoma Hca-F cells via ERK2/c-Jun/p-c-Jun(Ser73) and ERK2/E-cadherin pathways. It is an important molecule in metastasis (especially LNM) and a potential therapeutic target for hepatocarcinoma.
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Affiliation(s)
- Xujuan Sun
- Department of Biotechnology, Dalian Medical University, Dalian 116044, China
| | - Bin Wei
- Department of Biotechnology, Dalian Medical University, Dalian 116044, China
| | - Shuqing Liu
- Department of Biochemistry, Dalian Medical University, Dalian 116044, China
| | - Chunmei Guo
- Department of Biotechnology, Dalian Medical University, Dalian 116044, China
| | - Na Wu
- Department of Biotechnology, Dalian Medical University, Dalian 116044, China
| | - Qinlong Liu
- Department of General Surgery, The 2nd Affiliated Hospital, Dalian Medical University, Dalian 116027, China.
| | - Ming-Zhong Sun
- Department of Biotechnology, Dalian Medical University, Dalian 116044, China.
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26
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Inhibitory effect of NBL1 on PDGF-BB-induced human PASMC proliferation through blockade of PDGFβ-p38MAPK pathway. Biosci Rep 2016; 36:BSR20160199. [PMID: 27474499 PMCID: PMC5006314 DOI: 10.1042/bsr20160199] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Accepted: 07/28/2016] [Indexed: 12/26/2022] Open
Abstract
Pulmonary artery remodelling is a key feature in the pathological progress of pulmonary arterial hypertension (PAH). Moreover, excessive proliferation of pulmonary arterial smooth muscle cells (PASMCs) plays a critical role in the pathogenesis of pulmonary artery remodelling. Neuroblastoma suppressor of tumorigenicity 1 (NBL1) has been previously shown to induce growth inhibition in tumour cells. However, the effect of NBL1 in the regulation of human PASMC proliferation remains unclear. In cultured human PASMCs, we observed a dose-dependent inhibitory effect of NBL1 on platelet derived growth factor (PDGF)-BB-induced cell growth, DNA synthesis and proliferating cell nuclear antigen (PCNA) expression, as measured by MTS assay, 5-ethynil-2-deoxyuridine (EdU) analysis and western blots respectively. We also detected the expression and activities of cell-cycle positive regulators (cyclin D1, cyclin E, CDK2, CDK4 and CDK6) and negative regulators (p21 and p27) in human PASMCs by western blots and co-immuoprecipitation (IP). Our results show that NBL1-induced growth suppression is associated with the decreased activity of cyclin D1–CDK4 and the decreased phosphorylation of p27 in PDGF-BB-treated human PASMCs. By western blots using the phosphor-specific antibodies, we further demonstrated that NBL1 induced growth suppression is mediated by blockade of the up-stream PDGF-receptor β (PDGFRβ)-p38 mitogen-activated protein kinase (MAPK). In conclusion, our results suggest that NBL1 could inhibit PDGF-BB-induced human PASMC proliferation, and the underlying mechanism is associated with the decreased cyclin D1–CDK4 activity and up-regulated p27 by decreasing the phosphorylation of p27 via blockade of PDGFRβ-p38MAPK signal cascade. Our findings may provide a potential therapeutic target for PAH.
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27
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Deng QF, Sun X, Liang ZF, Zhang ZQ, Yu DX, Zhong CY. Cigarette smoke extract induces the proliferation of normal human urothelial cells through the NF-κB pathway. Oncol Rep 2016; 35:2665-72. [PMID: 26883573 DOI: 10.3892/or.2016.4623] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2015] [Accepted: 12/07/2015] [Indexed: 11/06/2022] Open
Abstract
Bladder cancer is a common genitourinary malignant disease worldwide. Convincing evidence shows that cigarette smoke (CS) is a crucial risk factor for bladder cancer, yet the role of the NF-κB signaling pathway in the development of CS-associated bladder cancer has not been fully elucidated. In the present study, we found that exposure to cigarette smoke extract (CSE) induced proliferation and triggered the transition of normal human urothelial cells from G1 to S phase. Moreover, CSE exposure enhanced the expression of cyclin D1 and proliferating cell nuclear antigen (PCNA) and decreased the expression of p21 in SV-HUC-1 cells. Furthermore, the levels of nuclear NF-κB p65/p50 were significantly elevated by CSE. Pre-treatment with the NF-κB inhibitor (PDTC) reversed CSE-triggered cell proliferation. Taken together, our study revealed that CSE induced proliferation of normal human urothelial cells through the NF-κB pathway, and these data enhance our understanding of the CSE-related carcinogenesis of bladder cancer.
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Affiliation(s)
- Qi-Fei Deng
- Department of Urology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Xin Sun
- Department of Urology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Zhao-Feng Liang
- Department of Nutrition and Food Safety, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, P.R. China
| | - Zhi-Qiang Zhang
- Department of Urology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - De-Xin Yu
- Department of Urology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Cai-Yun Zhong
- Department of Nutrition and Food Safety, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, P.R. China
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28
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Pastorkova Z, Skarda J, Andel J. The role of microRNA in metastatic processes of non-small cell lung carcinoma. Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub 2016; 160:343-57. [PMID: 27108604 DOI: 10.5507/bp.2016.021] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Accepted: 04/08/2016] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND MicroRNAs are small non-coding one-stranded RNA molecules that play an important role in the post-transcriptional regulation of genes. Bioinformatic predictions indicate that each miRNA can regulate hundreds of target genes. MicroRNA expression can be associated with various cellular processes leading to the metastasis of malignant tumours including non-small cell lung carcinoma. This review summarizes current knowledge on the role of microRNAs in NSCLC metastasis to the brain and lymph nodes. METHODS A search of the NCBI/PubMed database for publications on expression levels and the mechanisms of microRNA action in NSCLC metastasis. RESULTS AND CONCLUSION Dysregulation of microRNAs in NSCLC can be associated with brain and lymph node metastasis. There are differences in microRNA expression profiling between NSCLC with and without metastases but it is currently not possible to reliably predict the site of metastasis in NSCLC. Based on data from RNAmicroarrays, bioinformatics analysis is able to predict the target genes of highlighted microRNAs, providing us with complex information about cancer cell features such as enhanced proliferation, migration and invasion. Such microRNAs may then be knocked-down using siRNAs or substituted with miRNA mimics. RNA microarray profiling may thus be a useful tool to select up- or down-regulated microRNAs. A number of authors suggest that microRNAs could serve as biomarkers and therapeutic targets in the treatment of NSCLC metastasis.
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Affiliation(s)
- Zuzana Pastorkova
- Department of Clinical and Molecular Pathology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Czech Republic
| | - Jozef Skarda
- Department of Clinical and Molecular Pathology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Czech Republic
| | - Jozef Andel
- Department of Oncology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Czech Republic
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29
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Liu Y, Bi T, Dai W, Wang G, Qian L, Gao Q, Shen G. Oxymatrine synergistically enhances the inhibitory effect of 5-fluorouracil on hepatocellular carcinoma in vitro and in vivo. Tumour Biol 2015; 37:7589-97. [PMID: 26687645 DOI: 10.1007/s13277-015-4642-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 12/13/2015] [Indexed: 12/27/2022] Open
Abstract
Oxymatrine (OMT), one of the main active components of extracts from the dry roots of Sophora flavescens, has long been employed clinically to treat cancers. Here, we investigated the synergistic effect of OMT with 5-fluorouracil (5-Fu) on the tumor growth inhibition of hepatocellular carcinoma cells (HCC; Hep-G2 and SMMC-7721) and explored the underlying mechanism. Cells were treated with OMT and/or 5-Fu and subjected to cell viability, colony formation, apoptosis, cell cycle, western blotting, xenograft tumorigenicity assay, and immunohistochemistry. OMT and 5-Fu inhibited the proliferation of Hep-G2 and SMMC-7721 cells, and combination treatment with OMT and 5-Fu resulted in a combination index <1, indicating a synergistic effect. Co-treatment with OMT and 5-Fu caused G0/G1 phase arrest by upregulating P21 and P27 and downregulating cyclin D, and induced apoptosis through increasing the production of reactive oxygen species (ROS) and decreasing the levels of p-ERK. In addition, the inhibition of ROS respectively reversed the cell death induced by 5-Fu + OMT, suggesting the key roles of ROS in the process. More importantly, 5-Fu and OMT in combination exhibit much superior tumor weight and volume inhibition on SMMC-7721 xenograft mouse model in comparison to 5-Fu or OMT alone. Immunohistochemistry analysis suggests the combinations greatly suppressed tumor proliferation, which was consistent with our in vitro results. Taken together, our findings indicated that OMT sensitizes HCC to 5-Fu treatment by the suppression of ERK activation through the overproduction of ROS, and combination treatment with OMT and 5-Fu would be a promising therapeutic strategy for HCC treatment.
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Affiliation(s)
- Yan Liu
- Department of General Surgery, Wujiang No. 1 People's Hospital, Suzhou, 215200, China
| | - Tingting Bi
- Department of Geriatric Ward, Wujiang No. 1 People's Hospital, Suzhou, 215200, China
| | - Wei Dai
- Department of General Surgery, Wujiang No. 1 People's Hospital, Suzhou, 215200, China
| | - Gang Wang
- Department of General Surgery, Wujiang No. 1 People's Hospital, Suzhou, 215200, China
| | - Liqiang Qian
- Department of General Surgery, Wujiang No. 1 People's Hospital, Suzhou, 215200, China
| | - Quangen Gao
- Department of General Surgery, Wujiang No. 1 People's Hospital, Suzhou, 215200, China.
| | - Genhai Shen
- Department of General Surgery, Wujiang No. 1 People's Hospital, Suzhou, 215200, China.
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30
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Huang W, Lv B, Zeng H, Shi D, Liu Y, Chen F, Li F, Liu X, Zhu R, Yu L, Jiang X. Paracrine Factors Secreted by MSCs Promote Astrocyte Survival Associated With GFAP Downregulation After Ischemic Stroke via p38 MAPK and JNK. J Cell Physiol 2015; 230:2461-75. [DOI: 10.1002/jcp.24981] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 02/23/2015] [Accepted: 03/02/2015] [Indexed: 12/16/2022]
Affiliation(s)
- Weiyi Huang
- The National Key Clinic Specialty; The Neurosurgery Institute of Guangdong Province; Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration; Department of Neurosurgery, Zhujiang Hospital; Southern Medical University; Guangzhou China
| | - Bingke Lv
- The National Key Clinic Specialty; The Neurosurgery Institute of Guangdong Province; Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration; Department of Neurosurgery, Zhujiang Hospital; Southern Medical University; Guangzhou China
| | - Huijun Zeng
- The National Key Clinic Specialty; The Neurosurgery Institute of Guangdong Province; Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration; Department of Neurosurgery, Zhujiang Hospital; Southern Medical University; Guangzhou China
| | - Dandan Shi
- Department of Anatomy; Key Laboratory of Construction and Detection of Guangdong Province; Southern Medical University; Guangzhou China
| | - Yi Liu
- The National Key Clinic Specialty; The Neurosurgery Institute of Guangdong Province; Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration; Department of Neurosurgery, Zhujiang Hospital; Southern Medical University; Guangzhou China
| | - Fanfan Chen
- The National Key Clinic Specialty; The Neurosurgery Institute of Guangdong Province; Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration; Department of Neurosurgery, Zhujiang Hospital; Southern Medical University; Guangzhou China
| | - Feng Li
- The National Key Clinic Specialty; The Neurosurgery Institute of Guangdong Province; Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration; Department of Neurosurgery, Zhujiang Hospital; Southern Medical University; Guangzhou China
| | - Xinghui Liu
- Department of Anatomy; Key Laboratory of Construction and Detection of Guangdong Province; Southern Medical University; Guangzhou China
| | - Rong Zhu
- Department of Anatomy; Key Laboratory of Construction and Detection of Guangdong Province; Southern Medical University; Guangzhou China
| | - Lei Yu
- Department of Anatomy; Key Laboratory of Construction and Detection of Guangdong Province; Southern Medical University; Guangzhou China
| | - Xiaodan Jiang
- The National Key Clinic Specialty; The Neurosurgery Institute of Guangdong Province; Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration; Department of Neurosurgery, Zhujiang Hospital; Southern Medical University; Guangzhou China
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