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Suhardi VJ, Oktarina A, Hammad M, Niu Y, Li Q, Thomson A, Lopez J, McCormick J, Ayturk UM, Greenblatt MB, Ivashkiv LB, Bostrom MPG, Yang X. Prevention and treatment of peri-implant fibrosis by functionally inhibiting skeletal cells expressing the leptin receptor. Nat Biomed Eng 2024:10.1038/s41551-024-01238-y. [PMID: 39085645 DOI: 10.1038/s41551-024-01238-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 06/25/2024] [Indexed: 08/02/2024]
Abstract
The cellular and molecular mediators of peri-implant fibrosis-a most common reason for implant failure and for surgical revision after the replacement of a prosthetic joint-remain unclear. Here we show that peri-implant fibrotic tissue in mice and humans is largely composed of a specific population of skeletal cells expressing the leptin receptor (LEPR) and that these cells are necessary and sufficient to generate and maintain peri-implant fibrotic tissue. In a mouse model of tibial implantation and osseointegration that mimics partial knee arthroplasty, genetic ablation of LEPR+ cells prevented peri-implant fibrosis and the implantation of LEPR+ cells from peri-implant fibrotic tissue was sufficient to induce fibrosis in secondary hosts. Conditional deletion of the adhesion G-protein-coupled receptor F5 (ADGRF5) in LEPR+ cells attenuated peri-implant fibrosis while augmenting peri-implant bone formation, and ADGRF5 inhibition by the intra-articular or systemic administration of neutralizing anti-ADGRF5 in the mice prevented and reversed peri-implant fibrosis. Pharmaceutical agents that inhibit the ADGRF5 pathway in LEPR+ cells may be used to prevent and treat peri-implant fibrosis.
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Affiliation(s)
- Vincentius Jeremy Suhardi
- Department of Orthopedic Surgery, Hospital for Special Surgery, New York, NY, USA
- Research Institute, Hospital for Special Surgery, New York, NY, USA
| | | | - Mohammed Hammad
- Research Institute, Hospital for Special Surgery, New York, NY, USA
| | - Yingzhen Niu
- Research Institute, Hospital for Special Surgery, New York, NY, USA
- Department of Joint Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, P. R. China
| | - Qingdian Li
- Research Institute, Hospital for Special Surgery, New York, NY, USA
- Department of Orthopedics, Guangdong Provincial People's Hospital, Southern Medical University, Guangzhou, P. R. China
| | - Andrew Thomson
- Research Institute, Hospital for Special Surgery, New York, NY, USA
| | - Juan Lopez
- Research Institute, Hospital for Special Surgery, New York, NY, USA
| | - Jason McCormick
- Flow Cytometry Core Facility, Weill Cornell Medicine, New York, NY, USA
| | - Ugur M Ayturk
- Research Institute, Hospital for Special Surgery, New York, NY, USA
- Department of Orthopedic Surgery, Weill Cornell Medicine, New York, NY, USA
| | - Matthew B Greenblatt
- Research Institute, Hospital for Special Surgery, New York, NY, USA
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, USA
| | | | - Mathias P G Bostrom
- Department of Orthopedic Surgery, Hospital for Special Surgery, New York, NY, USA
- Research Institute, Hospital for Special Surgery, New York, NY, USA
- Department of Orthopedic Surgery, Weill Cornell Medicine, New York, NY, USA
| | - Xu Yang
- Research Institute, Hospital for Special Surgery, New York, NY, USA.
- Department of Orthopedic Surgery, Weill Cornell Medicine, New York, NY, USA.
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Zhang B, Dong S, Wang J, Huang T, Zhao P, Xu J, Liu D, Fu L, Wang L, Wang G, Zou C. NOTCH4 ΔL12_16 sensitizes lung adenocarcinomas to EGFR-TKIs through transcriptional down-regulation of HES1. Nat Commun 2023; 14:3183. [PMID: 37268635 DOI: 10.1038/s41467-023-38833-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 05/18/2023] [Indexed: 06/04/2023] Open
Abstract
Resistance to epidermal growth factor tyrosine kinase inhibitors (EGFR-TKI) remains one of the major challenges in lung adenocarcinoma (LUAD) therapy. Here, we find an increased frequency of the L12_16 amino acid deletion mutation in the signal peptide region of NOTCH4 (NOTCH4ΔL12_16) in EGFR-TKI-sensitive patients. Functionally, exogenous induction of NOTCH4ΔL12_16 in EGFR-TKI -resistant LUAD cells sensitizes them to EGFR-TKIs. This process is mainly mediated by the reduction of the intracellular domain of NOTCH4 (NICD4) caused by the NOTCH4ΔL12_16 mutation, which results in a lower localization of NOTCH4 in the plasma membrane. Mechanistically, NICD4 transcriptionally upregulates the expression of HES1 by competitively binding to the gene promoter relative to p-STAT3. Because p-STAT3 can downregulate the expression of HES1 in EGFR-TKI-resistant LUAD cells, the reduction of NICD4 induced by NOTCH4ΔL12_16 mutation leads to a decrease in HES1. Moreover, inhibition of the NOTCH4-HES1 pathway using inhibitors and siRNAs abolishes the resistance of EGFR-TKI. Overall, we report that the NOTCH4ΔL12_16 mutation sensitizes LUAD patients to EGFR-TKIs through transcriptional down-regulation of HES1 and that targeted blockade of this signaling cohort could reverse EGFR-TKI -resistance in LUAD, providing a potential approach to overcome resistance to EGFR-TKI -therapy.
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Affiliation(s)
- Bin Zhang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, Guangdong, PR China
| | - Shaowei Dong
- Department of Hematology and Oncology, Shenzhen Children's Hospital, Shenzhen, Guangdong, PR China
| | - Jian Wang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, Guangdong, PR China
| | - Tuxiong Huang
- Department of Pharmacology and International Cancer Center, Shenzhen University Medical School, Shenzhen, Guangdong, PR China
| | - Pan Zhao
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, Guangdong, PR China
| | - Jing Xu
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, Guangdong, PR China
| | - Dongcheng Liu
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, Guangdong, PR China
| | - Li Fu
- Department of Pharmacology and International Cancer Center, Shenzhen University Medical School, Shenzhen, Guangdong, PR China
| | - Lingwei Wang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, Guangdong, PR China
| | - Guangsuo Wang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, Guangdong, PR China
| | - Chang Zou
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, Guangdong, PR China.
- School of Medicine, Life and Health Sciences, The Chinese University of Hong Kong (Shenzhen), Shenzhen, Guangdong, PR China.
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Wang L, Zhu T, Feng D, Li R, Zhang C. Polyphenols from Chinese Herbal Medicine: Molecular Mechanisms and Therapeutic Targets in Pulmonary Fibrosis. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2022; 50:1063-1094. [PMID: 35475972 DOI: 10.1142/s0192415x22500434] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Pulmonary fibrosis (PF) is a highly confounding and fatal pathological process with finite treatment options. Multiple factors such as oxidative and immune/inflammation involve key pathological processes in chronic lung disease, and their intimate interactions mediate chronic lung damage, denudation of the alveolar epithelium, hyperproliferation of type II alveolar epithelial cells (AECIIs), proliferation and differentiation of fibroblasts, and the permeability of microvessels. We reviewed the classic mechanism of PF and highlighted a few emerging mechanisms for studying complex networks in lung disease pathology. Polyphenols, as a multi-target drug, has excellent potential in the treatment of pulmonary fibrosis. We then reviewed recent advances in discovering phenolic compounds from fruits, tea, and medical herbs with the bioactivities of simultaneously regulating multiple factors (e.g., oxidative stress, inflammation, autophagy, apoptosis, pyroptosis) for minimizing pulmonary fibrosis injury. These compounds include resveratrol, curcumin, salvianolic acid B, epigallocatechin-3-gallate, gallic acid, corilagin. Each phenolic compound can exert its anti-PF effect through various mechanisms, and the signaling pathways involved in different phenolic compounds are not the same. This review summarized the available evidence on phenolic compounds' effectiveness in pulmonary diseases and explored the molecular mechanisms and therapeutic targets of phenolic compounds from Chinese herbal medicine with the properties of inhibition of ongoing fibrogenesis and resolution of existing fibrosis.
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Affiliation(s)
- Lei Wang
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China.,Sino-Jan Joint Lab of Natural Health Products Research, School of Traditional Chinese Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Ting Zhu
- Institute of Neuroregeneration and Neurorehabilitation, Qingdao University, Qingdao 266071, P. R. China
| | - Deqin Feng
- State Key Laboratory of Microbial Resources, Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Renshi Li
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China.,Sino-Jan Joint Lab of Natural Health Products Research, School of Traditional Chinese Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Chaofeng Zhang
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China.,Sino-Jan Joint Lab of Natural Health Products Research, School of Traditional Chinese Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
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Wang Y, Cao Z, Liu F, Ou Y. Clinical significance of activated Wnt/β-catenin signaling in apoptosis inhibition of oral cancer. Open Life Sci 2021; 16:1045-1052. [PMID: 34632073 PMCID: PMC8480266 DOI: 10.1515/biol-2021-0104] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 07/25/2021] [Accepted: 08/12/2021] [Indexed: 11/15/2022] Open
Abstract
Wnt/β-catenin signaling is an evolutionarily conserved pathway and plays a crucial role in regulating cancer cell proliferation and tumorigenesis. However, the molecular mechanism behind the Wnt/β-catenin signaling-mediated carcinogenesis and apoptosis resistance in oral squamous cell carcinoma is not well characterized so far. In the present study, we have investigated the effect of β-catenin depletion of the perversely activated Wnt/β-catenin signaling pathway on apoptosis resistance and tumorigenesis of the human OSCC cell line SCC-55. RT-PCR and western blot analysis demonstrated that the Wnt/β-catenin signaling pathway and its downstream targets such as DKK1 and AXIN2 are aberrantly activated in SCC-55 cells. Furthermore, upon silencing (RNA interference) of β-catenin in SCC-55, cells became more sensitive toward the chemotherapeutic drugs and thus resulted in apoptotic cell death. Meanwhile, flow cytometry analysis confirmed the enhanced apoptosis and activation of caspases in β-catenin RNAi cells. Besides ensuing β-catenin-siRNA transfection, the cell proliferation and cancer colony generating efficiencies are significantly impeded compared to the non-transfected cells. Furthermore, the tumorigenicity was inhibited by the downregulation of OCT-4 in β-catenin-silenced SCC-55 cells. Altogether, Wnt/β-catenin signaling could potentially target anti-cancer drugs to induce apoptosis and achieve a better clinical outcome.
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Affiliation(s)
- Yufeng Wang
- Department of Stomatology, Huzhou Central Hospital, Affiliated Central Hospital of Huzhou University, No. 1558 Third Ring North Road, Huzhou, Zhejiang, 313000, China
| | - Zheng Cao
- Department of Stomatology, Huzhou Central Hospital, Affiliated Central Hospital of Huzhou University, No. 1558 Third Ring North Road, Huzhou, Zhejiang, 313000, China
| | - Fengjia Liu
- Department of Stomatology, Huzhou Central Hospital, Affiliated Central Hospital of Huzhou University, No. 1558 Third Ring North Road, Huzhou, Zhejiang, 313000, China
| | - Yuejian Ou
- Department of Stomatology, Huzhou Central Hospital, Affiliated Central Hospital of Huzhou University, No. 1558 Third Ring North Road, Huzhou, Zhejiang, 313000, China
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Li Q, Huang L. MiR-148a-3p Regulates the Invasion and Odontoblastic Differentiation of Human Dental Pulp Stem Cells via the Wnt1/ β-Catenin Pathway. Int J Stem Cells 2021; 14:434-446. [PMID: 34456188 PMCID: PMC8611305 DOI: 10.15283/ijsc20118] [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: 07/21/2020] [Revised: 04/20/2021] [Accepted: 05/17/2021] [Indexed: 11/09/2022] Open
Abstract
Background and Objectives MiR-148a-3p has been reported to regulate the differentiation of marrow stromal cell osteoblast. In this study, whether miR-148a-3p regulated the odontoblastic differentiation of human dental pulp stem cells (hDPSCs) or not was explored. Methods and Results The hDPSCs were isolated and identified via flow cytometry. Targets of miR-148a-3p were identified via bioinformatics and dual-luciferase reporter assay. After the cell was cultured in the odontogenic differentiation medium or infected, cell viability, invasion, and odontoblastic differentiation were detected via MTT, transwell, and Alizarin Red S staining, respectively. The miR-148a-3p, Wnt1, β-catenin, DSPP, DMP-1, RUNX2, OCN, and Smad4 expressions were determined by RT-qPCR and Western blot. The hDPSCs odontoblastic differentiation downregulated the miR-148a-3p expression and upregulated Wnt1 expression. Wnt1 was determined as the target for miR-148a-3p. MiR-148a-3p mimic and siWnt1 suppressed the cell viability, invasion, and odontoblastic differentiation of hDPSCs and inhibited the Wnt1, β-catenin, DSPP, DMP-1, RUNX2, OCN, and Smad4 expressions. In contrast, miR-148a-3p inhibitor and overexpressed Wnt1 promoted the cell viability, invasion, and odontoblastic differentiation of hDPSCs, and upregulated the Wnt1, β-catenin, DSPP, DMP-1, RUNX2, OCN, and Smad4 expressions. Also, miR-148a-3p mimic and inhibitor reversed the effects of Wnt1 overexpression and siWnt1. Conclusions MiR-148a-3p modulated the invasion and odontoblastic differentiation of hDPSCs through the Wnt1/β-catenin pathway.
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Affiliation(s)
- Qiong Li
- Department of Oral and Maxillofacial Surgery, Jingmen NO.1 People's Hospital, Jingmen, China
| | - Lei Huang
- Department of Oral and Maxillofacial Surgery, Jingmen NO.1 People's Hospital, Jingmen, China
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Wnt/β-catenin signaling may induce senescence of chondrocytes in osteoarthritis. Exp Ther Med 2020; 20:2631-2638. [PMID: 32765756 PMCID: PMC7401843 DOI: 10.3892/etm.2020.9022] [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: 05/29/2019] [Accepted: 05/28/2020] [Indexed: 12/19/2022] Open
Abstract
Osteoarthritis (OA) is an autoimmune disease associated with increasing age. Typically, chondrocyte senescence is believed to serve an important role in the development and progression of OA. However, the specific mechanisms underlying chondrocyte senescence have not been fully addressed. The present study hypothesized that the Wnt/β-catenin signaling may represent a major regulator of chondrocyte senescence. In addition, the acetylated levels of p53 and sirtuin-1 (SIRT-1) were examined as putative markers for chondrocyte senescence, since activation of p53 is considered an important step in the regulation of senescence. The Wnt/β-catenin signaling pathway was activated using LiCl and inhibited using the Wnt signaling pathway inhibitor, dickkopf-1 (DKK1) in order to evaluate the role of this pathway in the development of OA. Senescent cells were detected using the senescence-associated indicator acidic senescence-associated β-galactosidase (SA-β-gal). The effects of p53 and p16 on chondrocyte senescence were assessed via activation of Wnt/β-catenin signaling using Wnt-1. In addition, β-catenin was transfected into chondrocytes to induce activation of the Wnt/β-catenin signaling pathway. Finally, a rabbit model of OA was used to assess whether the observed effects on the Wnt/β-catenin signaling pathway and the induction of chondrocyte senescence were perpetuated. Activation of Wnt/β-catenin signaling increased the expression levels of SA-β-gal, p53, p16 and acetylated p53. Transfection of β-catenin in chondrocytes increased the expression levels of acetylated p53 and decreased the expression levels of SIRT-1, which in turn deacetylated p53 and modulated its activity. Finally, the role of the Wnt/β-catenin signaling pathway was confirmed in the development of OA using a rabbit model with this condition. The present study suggested that activation of the Wnt/β-catenin signaling pathway promoted chondrocyte senescence, through downregulation of SIRT-1 and increased the expression of acetylated p53.
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Combined Activation of Guanylate Cyclase and Cyclic AMP in Lung Fibroblasts as a Novel Therapeutic Concept for Lung Fibrosis. BIOMED RESEARCH INTERNATIONAL 2019; 2019:1345402. [PMID: 30984775 PMCID: PMC6431482 DOI: 10.1155/2019/1345402] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 12/19/2018] [Accepted: 01/28/2019] [Indexed: 12/21/2022]
Abstract
Remodelling of the peripheral lung tissue and fibrotic foci are the main pathologies of idiopathic pulmonary fibrosis (IPF), a disease that is difficult to treat. TGF-β activation of peripheral lung fibroblasts is indicated as the major cause of tissue remodelling in IPF and is resulting in fibroblast hyperplasia and deposition of extracellular matrix. Soluble guanylate cyclase (sGC) stimulators combined with cyclic AMP (cAMP) activators have been reported to reduce proliferation and matrix deposition in other conditions than IPF. Therefore, this drug combination may present a novel therapeutic concept for IPF. This study investigated the effect of BAY 41-2272 and forskolin on remodelling parameters in primary human lung fibroblasts. The study determined TGF-β induced proliferation by direct cell counts after 3 days; and deposition of collagen type-I, type III, and fibronectin. BAY 41-2272 significantly reduced TGF-β induced fibroblast proliferation, but did not reduce viability. This inhibitory effect was further supported by forskolin. Both BAY 41-2272 and forskolin alone reduced TGF-β induced collagen and fibronectin de novo synthesis as well as deposition. This effect was significantly stronger when the two compounds were combined. Furthermore, the TGF-β induced expression of fibrilar α-smooth muscle actin was reduced by BAY 41-2272 and this effect was strengthened by forskolin. In addition, BAY 41-2272 and forskolin reduced TGF-β induced β-catenin. All effects of BAY 41-2272 were concentration dependent. The findings suggest that BAY 41-2272 in combination with cAMP stimulation may present a novel therapeutic strategy to reduce tissue remodelling in IPF.
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Zhou J, Yi Z, Fu Q. Dynamic decreased expression and hypermethylation of secreted frizzled-related protein 1 and 4 over the course of pulmonary fibrosis in mice. Life Sci 2019; 218:241-252. [PMID: 30586565 DOI: 10.1016/j.lfs.2018.12.041] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 12/18/2018] [Accepted: 12/22/2018] [Indexed: 01/08/2023]
Abstract
Aberrantly activated Wnt signaling pathway and dysregulation of extracellular antagonists of Wnt signaling have been revealed in pulmonary fibrosis. In this study we evaluated the expression of secreted frizzled-related proteins (SFRPs) and their aberrant promoter methylation to investigate the involvement of epigenetic regulation in pulmonary fibrosis. The pulmonary fibrosis induced by intratracheal injection of bleomycin (BLM) into mice was adopted. The transcription and relative protein expression of SFRPs were detected at Day 7 (D7), D14, and D21. DNA methylation analysis was performed by methylation-specific polymerase chain reaction (MSP). A DNA methyltransferase (DNMT) inhibitor (5-aza-2'-deoxycytidine; 5-aza) was used for demethylation and the relative β-catenin expression levels were measured to assess overactivity of the canonical Wnt signaling pathway. The transcription and protein expression of SFRP1 significantly decreased at D14 and D21, whereas the transcription and protein expression of SFRP4 significantly decreased at D7 and stayed downregulated until D21. The significantly hypermethylated promoters of SFRP1 and SFRP4 resulted in impaired transcription and decreased expression during pulmonary fibrosis in mice. Besides, reactivation of SFRP1 and SFRP4 by 5-aza reduced β-catenin mRNA and protein expression in vivo and in vitro. Animal experiments confirmed that 5-aza could significantly alleviate bleomycin-induced pulmonary fibrosis in mice. Thus, changes of promoter hypermethylation might downregulate SFRP1 and SFRP4 at different stages of pulmonary fibrosis, and the finding supports the usefulness of DNMT inhibitors, which might effectively reverse activation of β-catenin and reduce pulmonary fibrosis in mice. These data provide a possible new direction in the research on pulmonary fibrosis treatments.
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Affiliation(s)
- Junfei Zhou
- Department of Rheumatology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, PR China
| | - Zheng Yi
- Department of Rheumatology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, PR China.
| | - Qiang Fu
- Department of Rheumatology, The First Affiliated Hospital of University of South China, HengYang 421001, PR China
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Cai R, Qimuge N, Ma M, Wang Y, Tang G, Zhang Q, Sun Y, Chen X, Yu T, Dong W, Yang G, Pang W. MicroRNA-664-5p promotes myoblast proliferation and inhibits myoblast differentiation by targeting serum response factor and Wnt1. J Biol Chem 2018; 293:19177-19190. [PMID: 30323063 DOI: 10.1074/jbc.ra118.003198] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 10/02/2018] [Indexed: 01/23/2023] Open
Abstract
MicroRNAs (miRNAs) are noncoding RNAs that regulate gene expression at the post-transcriptional level and are involved in the regulation of the formation, maintenance, and function of skeletal muscle. Using miRNA sequencing and bioinformatics analysis, we previously found that the miRNA miR-664-5p is significantly differentially expressed in longissimus dorsi muscles of Rongchang pigs. However, the molecular mechanism by which miR-664-5p regulates myogenesis remains unclear. In this study, using flow cytometry, 5-ethynyl-2'-deoxyuridine staining, and cell count and immunofluorescent assays, we found that cell-transfected miR-664-5p mimics greatly promoted proliferation of C2C12 mouse myoblasts by increasing the proportion of cells in the S- and G2-phases and up-regulating the expression of cell cycle genes. Moreover, miR-664-5p inhibited myoblast differentiation by down-regulating myogenic gene expression. In contrast, miR-664-5p inhibitor repressed myoblast proliferation and promoted myoblast differentiation. Mechanistically, using dual-luciferase reporter gene experiments, we demonstrated that miR-664-5p directly targets the 3'-UTR of serum response factor (SRF) and Wnt1 mRNAs. We also observed that miR-664-5p inhibits both mRNA and protein levels of SRF and Wnt1 during myoblast proliferation and myogenic differentiation, respectively. Furthermore, the activating effect of miR-664-5p on myoblast proliferation was attenuated by SRF overexpression, and miR-664-5p repressed myogenic differentiation by diminishing the accumulation of nuclear β-catenin. Of note, miR-664-5p's inhibitory effect on myogenic differentiation was abrogated by treatment with Wnt1 protein, the key activator of the Wnt/β-catenin signaling pathway. Collectively, our findings suggest that miR-664-5p controls SRF and canonical Wnt/β-catenin signaling pathways in myogenesis.
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Affiliation(s)
- Rui Cai
- From the Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Naren Qimuge
- From the Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Meilin Ma
- From the Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Yingqian Wang
- From the Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Guorong Tang
- From the Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Que Zhang
- From the Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Yunmei Sun
- From the Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Xiaochang Chen
- From the Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Taiyong Yu
- From the Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Wuzi Dong
- From the Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Gongshe Yang
- From the Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Weijun Pang
- From the Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
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Fang CX, Ma CM, Jiang L, Wang XM, Zhang N, Ma JN, Wu TH, Zhang ZH, Zhao GD, Zhao YD. p38 MAPK is Crucial for Wnt1- and LiCl-Induced Epithelial Mesenchymal Transition. Curr Med Sci 2018; 38:473-481. [DOI: 10.1007/s11596-018-1903-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Revised: 01/25/2018] [Indexed: 12/18/2022]
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Zhang C, Yang P, Chen Y, Liu J, Yuan X. Expression of DACT1 in children with asthma and its regulation mechanism. Exp Ther Med 2018; 15:2674-2680. [PMID: 29456669 DOI: 10.3892/etm.2018.5706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 04/28/2017] [Indexed: 11/05/2022] Open
Abstract
The aim of the present study was to detect DACT1 expression levels in the lungs of children with asthma, and to investigate its role and molecular mechanisms in regulating the expression of inflammatory factors in RAW264.7 cells. DACT1, DACT2 and DACT3 expression was analyzed in biopsy specimens from 10 cases of newly diagnosed children with asthma and 10 healthy controls by reverse transcription-quantitative polymerase chain reaction, and their expression was confirmed in RAW264.7 cells. DACT1 expression was silenced by small interfering RNA or enhanced by transfection of pcDNA-3.1-DACT1 in RAW264.7 cells, and expression of β-catenin and inflammatory factors, interleukin (IL) 5, IL6 and IL13, was analyzed. Nuclear translocation of β-catenin was detected by western blot analysis, and the effect of DACT1 on β-catenin was investigated with rescue experiments. Regulation of the Wnt signaling pathway by DACT1 and β-catenin was analyzed in RAW264.7 cells after recombinant Wnt5A stimulation. DACT1, DACT2 and DACT3 were significantly upregulated in specimens from children with asthma compared with controls (P<0.05) and the expression of DACT1 was significantly more increased compared with DACT2 and DACT3 (P<0.05). Inhibition of DACT1 expression significantly suppressed IL5, IL6 and IL13 mRNA expression levels compared with the control (P<0.05), while upregulated DACT1 expression significantly increased IL5, IL6 and IL13 mRNA expression (P<0.05). DACT1 inhibited the expression and nuclear translocation of β-catenin, while overexpression of β-catenin significantly inhibited the biological function of DACT1 (P<0.05). Overexpression of β-catenin also significantly suppressed the upregulation of IL5, IL6 and IL13 mRNA induced by pcDNA3.1-DACT1 transfection (P<0.05). Following the addition of Wnt5A, overexpression of DACT1 inhibited the expression and nuclear translocation of β-catenin, and upregulated IL5, IL6 and IL13 mRNA expression. In conclusion, DACT1 was indicated to be upregulated in lung tissues from children with asthma, which could induce higher pro-inflammatory factor expression. DACT1 may act via inhibiting the expression and nuclear translocation of β-catenin, a factor in the Wnt signaling pathway. The present results suggested that DACT1 may be a potential target for the treatment of asthma.
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Affiliation(s)
- Cunxue Zhang
- Department of Pediatrics, The First People's Hospital of Jining, Jining, Shandong 272000, P.R. China
| | - Peili Yang
- Department of Pediatrics, The First People's Hospital of Jining, Jining, Shandong 272000, P.R. China
| | - Yan Chen
- Department of Pediatrics, The First People's Hospital of Jining, Jining, Shandong 272000, P.R. China
| | - Jing Liu
- Institute of Stem Cell and Regenerative Medicine, Medical College, Xiamen University, Xiamen, Fujian 361102, P.R. China
| | - Xiutai Yuan
- Department of Pediatrics, The First People's Hospital of Jining, Jining, Shandong 272000, P.R. China
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Kolahian S, Fernandez IE, Eickelberg O, Hartl D. Immune Mechanisms in Pulmonary Fibrosis. Am J Respir Cell Mol Biol 2016; 55:309-22. [DOI: 10.1165/rcmb.2016-0121tr] [Citation(s) in RCA: 176] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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Notch4 promotes gastric cancer growth through activation of Wnt1/β-catenin signaling. Mol Cell Biochem 2014; 401:165-74. [PMID: 25511451 DOI: 10.1007/s11010-014-2304-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Accepted: 12/10/2014] [Indexed: 12/13/2022]
Abstract
Gastric cancer (GC) is one of the most common cancers and lethal malignancies in the world. Discovering novel biomarkers that correlate with GC may provide opportunities to reduce the severity of GC. As one of Notch receptor family members in mammals, Notch4 plays an important role in carcinogenesis of several tumors. However, the precise function and mechanism of Notch4 in GC remain undefined. To address this question, we investigated whether Notch4 could be involved in GC progression. We found that Notch4 was activated by overexpressing exogenous intracellular domain of Notch4 (ICN4), and Notch4 activation promoted GC growth in vitro and in vivo, while Notch4 inhibition using ICN4 siRNA had opposite effects. In addition, Notch4 activation induced expression and activation of Wnt1, β-catenin and downstream target genes, c-Myc and cyclin D1, in GC cells, while Notch4 inhibition had opposite effects. Moreover, β-catenin depletion by siRNA attenuated cell proliferation induced by Notch4 activation. Therefore, our results revealed that Notch4 activates Wnt1/β-catenin signaling to regulate GC growth.
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