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Kim JK, Qu X, Chen CT, Smith JJ, Sanchez-Vega F, Garcia-Aguilar J. Identifying Diagnostic MicroRNAs and Investigating Their Biological Implications in Rectal Cancer. JAMA Netw Open 2021; 4:e2136913. [PMID: 34860243 PMCID: PMC8642786 DOI: 10.1001/jamanetworkopen.2021.36913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
IMPORTANCE Accurate clinical staging is important in rectal cancer because it determines the appropriate treatment and prognosis. Despite the use of multiple diagnostic imaging tools, it is sometimes difficult to clinically distinguish stage I tumors from stage II or III locally advanced disease. Identification of differentiating microRNAs (miRNAs) between these 2 groups may improve the clinical diagnostic power and provide insight into the biology of tumor progression. OBJECTIVES To investigate differences in the expression of miRNAs in stage I vs stage II or III rectal cancers and integrate matched mRNA profiling data to identify possible functional roles of these miRNAs. DESIGN, SETTING, AND PARTICIPANTS The primary tumor specimens from patients who were enrolled in 2 prospective clinical trials between March 24, 2004, and November 16, 2012 (American College of Surgeons Oncology Group [ACOSOG] Z6041 and Timing of Rectal Cancer Response to Chemoradiation [TIMING]) were sequenced to arrive at a set of 127 cases (41 stage I and 86 stage II or III tumors) with matched miRNA and messenger RNA (mRNA) profiling data. These findings were also evaluated in an independent cohort of 127 patient specimens (29 stage I and 98 stage II or III tumors) from The Cancer Genome Atlas Rectum Adenocarcinoma (TCGA-READ) that also had matched miRNA and mRNA data. Data analysis was performed from September 1, 2019, to September 1, 2020. MAIN OUTCOMES AND MEASURES Alterations in miRNA expression between stage I and stage II or III tumors and their potential gene targets. RESULTS A total of 254 pretreatment rectal adenocarcinoma specimens were analyzed in this study as 2 distinct cohorts: 127 samples in the ACOSOG/TIMING (stage I group: 27 [66%] male; mean [SD] age, 64.4 [10.8] years; stage II or III group: 47 [55%] male; mean [SD] age, 57.0 [11.4] years), and another 127 samples from TCGA-READ (stage I group: 17 [59%] male; mean [SD] age, 63.6 [12.0] years; stage II or III group: 48 [49%] male; mean [SD] age, 64.5 [11.4] years). A total of 19 miRNAs were overexpressed in stage II or III vs stage I tumors in both cohorts. This miRNA signature had an excellent discriminative value for distinguishing stage II or III from stage I rectal tumors (area under the curve, 0.88; 95% CI, 0.83-0.94 in ACOSOG/TIMING cohort and area under the curve, 0.84; 95% CI, 0.77-0.91 in the TCGA-READ cohort). Integrative analysis revealed 3 miRNA-mRNA pairs that exhibited significant correlations in both cohorts: miR-31-5p-SATB2, miR-143-3p-KLF5, and miR-204-5p-EZR. CONCLUSIONS AND RELEVANCE This diagnostic study found that many of the dysregulated miRNAs in stage II or III vs stage I rectal cancers have biological implications for tumor progression. The results of this study suggest that these miRNAs could assist as diagnostic biomarkers to better identify patients with locally advanced rectal cancer.
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Affiliation(s)
- Jin K. Kim
- Department of Surgery, Colorectal Service, Memorial Sloan Kettering Cancer Center, New York
| | - Xuan Qu
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York
| | - Chin-Tung Chen
- Department of Surgery, Colorectal Service, Memorial Sloan Kettering Cancer Center, New York
| | - J. Joshua Smith
- Department of Surgery, Colorectal Service, Memorial Sloan Kettering Cancer Center, New York
| | - Francisco Sanchez-Vega
- Department of Surgery, Colorectal Service, Memorial Sloan Kettering Cancer Center, New York
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York
| | - Julio Garcia-Aguilar
- Department of Surgery, Colorectal Service, Memorial Sloan Kettering Cancer Center, New York
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Yue W, Sun J, Zhang J, Chang Y, Shen Q, Zhu Z, Yu S, Wu X, Peng S, Li N, Hua J. Mir-34c affects the proliferation and pluripotency of porcine induced pluripotent stem cell (piPSC)-like cells by targeting c-Myc. Cells Dev 2021; 166:203665. [PMID: 33994350 DOI: 10.1016/j.cdev.2021.203665] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 01/30/2021] [Accepted: 02/09/2021] [Indexed: 12/28/2022]
Abstract
MicroRNAs are important regulators in stem cells, which involve in gene regulation, including cell proliferation, differentiation and apoptosis. As an important one, miR-34c participates in various processes by targeting protein-coding genes. It is generally considered as a tumor suppressor and cell adhesion inhibitor. However, whether miR-34c has effects on pluripotent stem cells is not clear. Here, by mir-34c mimics transfection, the function of miR-34c on porcine induced pluripotent stem cell (piPSC)-like cells was investigated. Bioinformatics analyses showed that c-Myc is miR-34c's candidate target, which was confirmed by dual Luciferase assay. The knockout of miR-34c indicated that mir-34c affects the proliferation and pluripotency of piPSC-like cells by targeting c-Myc. Our study explored the regulatory mechanism of miR-34c on piPSC-like cells, providing a reference for the establishment of true porcine PSCs.
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Affiliation(s)
- Wei Yue
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Jing Sun
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Juqing Zhang
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yongxing Chang
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Qiaoyan Shen
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Zhenshuo Zhu
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Shuai Yu
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xiaolong Wu
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Sha Peng
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Na Li
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Jinlian Hua
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi 712100, China.
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Zheng H, Wang JJ, Yang XR, Yu YL. Upregulation of miR-34c after silencing E2F transcription factor 1 inhibits paclitaxel combined with cisplatin resistance in gastric cancer cells. World J Gastroenterol 2020; 26:499-513. [PMID: 32089626 PMCID: PMC7015722 DOI: 10.3748/wjg.v26.i5.499] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 12/13/2019] [Accepted: 01/01/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND MicroRNA 34c (miR-34c) has been reported to be associated with malignant types of cancer, however, it remains unknown whether miR-34c is involved in chemoresistance in gastric cancer (GC).
AIM To investigate the effect of miR-34c and its upstream transcription factor E2F1 on paclitaxel combined with cisplatin resistance in GC cells.
METHODS Paired GC tissues and adjacent normal tissues were randomly sampled from 74 GC patients. miR-34c and E2F1 were detected by real-time quantitative PCR (qPCR) and Western blot. In addition, the drug resistance of GC cells to paclitaxel and cisplatin was induced by concentration gradient increasing methods, and changes in miR-34c and E2F1 during this process were measured. Furthermore, E2F1 and miR-34c overexpression or underexpression vectors were constructed and transfected into drug-resistant GC cells. MTT was employed to test the sensitivity of cells to paclitaxel combined with cisplatin, qPCR was adopted to detect the expression of miR-34c, Western blot was applied to detect the expression levels of E2F1, drug resistance-related proteins and apoptosis-related proteins, and flow cytometry was used for the determination of cell apoptosis and cell cycle status.
RESULTS E2F1 was overexpressed while miR-34c was underexpressed in GC. After inducing GC cells to be resistant to paclitaxel and cisplatin, E2F1 expression increased while miR-34c expression decreased. Both silencing E2F1 and over-expressing miR-34c could increase the sensitivity of drug-resistant GC cells to paclitaxel combined with cisplatin, promote cell apoptosis and inhibit cell proliferation. Among which, silencing E2F1 could reduce the expression of drug resistance-related proteins and apoptosis-related proteins, while over-expression of miR-34c could upregulate the expression of apoptosis-related proteins without affecting the expression of MDR-1, MRP and other drug resistance-related proteins. Rescue experiments demonstrated that inhibiting miR-34c could significantly weaken the sensitization of drug resistant cells, and Si E2F1 to paclitaxel combined with cisplatin.
CONCLUSION E2F1 inhibits miR-34c to promote the proliferation of GC cells and enhance the resistance to paclitaxel combined with cisplatin, and silencing E2F1 is conducive to improving the efficacy of paclitaxel combined with cisplatin in GC cells.
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Affiliation(s)
- Hong Zheng
- Department of Pathology, the Affiliated Hospital of Zunyi Medical University, Zunyi 563003, Guizhou Province, China
| | - Jin-Jing Wang
- Department of Pathology, the Affiliated Hospital of Zunyi Medical University, Zunyi 563003, Guizhou Province, China
| | - Xiao-Rong Yang
- Department of Pathology, the Affiliated Hospital of Zunyi Medical University, Zunyi 563003, Guizhou Province, China
| | - Yong-Lin Yu
- Department of Pathology, the Affiliated Hospital of Zunyi Medical University, Zunyi 563003, Guizhou Province, China
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He Y, Liu C, Song P, Pang Z, Mo Z, Huang C, Yan T, Sun M, Fa X. Investigation of miRNA- and lncRNA-mediated competing endogenous RNA network in cholangiocarcinoma. Oncol Lett 2019; 18:5283-5293. [PMID: 31612038 PMCID: PMC6781644 DOI: 10.3892/ol.2019.10852] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 03/08/2019] [Indexed: 12/17/2022] Open
Abstract
Cholangiocarcinoma (CCA) is a biliary malignancy which is prone to lymphatic metastasis and has a high mortality rate. This disease lacks effective therapeutic targets and prognostic molecular biomarkers. The aim of the current study was to investigate differentially expressed genes and elucidate their association with CCA and the underlying mechanisms of action. mRNAs, long non-coding RNAs (lncRNAs) and microRNAs (miRNAs) obtained from 36 CCA samples and nine normal samples from The Cancer Genome Atlas were integrated. Subsequently, 1,095 differentially expressed (DE) mRNAs and 75 DE miRNAs were identified using a threshold of |log2 fold change|>2 and an adjusted P<0.01. Weighted gene co-expression network analysis was used to identify the DEmRNAs that could be key target genes in CCA. A total of 12 hub DEmRNAs were identified as targetable genes. Furthermore, the hub DEmRNAs-DElncRNAs pairs were identified using the miRTarBase and miRcode databases. Cytoscape software was used to construct and visualize the protein-protein interactions and the competing endogenous RNA network. Survival time analysis and correlation analysis were used to further evaluate the hub genes. The results obtained in the current study suggested that spalt like transcription factor 3 and OPCML intronic transcript 1 may serve an important role in the development and progression of CCA.
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Affiliation(s)
- Yanxin He
- Department of Surgery, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450014, P.R. China
| | - Chao Liu
- Department of Surgery, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450014, P.R. China
| | - Pan Song
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450014, P.R. China
| | - Zhigang Pang
- Department of Surgery, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450014, P.R. China
| | - Zhuomao Mo
- College of Traditional Chinese Medicine of Jinan University, Institute of Integrated Traditional Chinese and Western Medicine of Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Chuiguo Huang
- Department of Urology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450014, P.R. China
| | - Tingting Yan
- The Nethersole School of Nursing, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong 999077, P.R. China
| | - Meng Sun
- Department of Gynecology and Obstetrics, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450014, P.R. China
| | - Xianen Fa
- Department of Surgery, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450014, P.R. China
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The Role of Abnormal Methylation of Wnt5a Gene Promoter Regions in Human Epithelial Ovarian Cancer: A Clinical and Experimental Study. Anal Cell Pathol (Amst) 2018; 2018:6567081. [PMID: 30079293 PMCID: PMC6069701 DOI: 10.1155/2018/6567081] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2017] [Revised: 02/10/2018] [Accepted: 02/26/2018] [Indexed: 12/28/2022] Open
Abstract
Objective In the current study, the role of abnormal methylation of Wnt5a gene promoter regions in human epithelial ovarian cancer was investigated. Methods Wnt5a expressions were examined by immunohistochemistry in epithelial ovarian tissues (30 normal and 79 human EOC tissues). SKOV3 cells were treated with different concentrations of 5-Aza-CdR (0.5, 5, and 50 μmol/L). The methylation status of the Wnt5a promoter was analyzed using a methylation-specific polymerase chain reaction (MSP), and the expression level of Wnt5a mRNA was detected using quantitative real-time polymerase chain reaction (qRT-PCR). Cell proliferation was measured by MTT assay, and apoptosis was analyzed using flow cytometry. Results (1) Compared with normal tissues, Wnt5a expressions were reduced or lost in EOC (P < 0.05). Wnt5a expression had a close relationship with histological grade, FIGO stage, and lymph node metastasis (P = 0.005, P = 0.022, and P = 0.037, resp.). (2) Wnt5a abnormal methylation status existed in ovarian cancer tissues and was higher than that of normal ovarian tissue (P < 0.01). (3) Before treatment with 5-Aza-CdR, the promoter of the Wnt5a gene was methylated in SKOV3 cells; accordingly, Wnt5a mRNA levels were low to absent in SKOV3 cells. (4) Following 5-Aza-CdR treatment, MSP analysis revealed complete demethylation of the Wnt5a promoter in the SKOV3 cell line, particularly at 5 μmol/L 5-Aza-CdR. Wnt5a expression increased in SKOV3 cells following treatment with a demethylating agent (P ≤ 0.001). (5) The growth rate of the cells was inhibited in a dose-dependent manner by treatment with 5-Aza-CdR. (6) The cell apoptosis rate increased gradually after treatment with 0.5, 5, and 50 μmol/L 5-Aza-CdR. The apoptosis rate exists in a dose-dependent relationship with 5-Aza-CdR concentration (F = 779.73, P < 0.01). Conclusions Wnt5a gene region promoter aberrant methylation existed in epithelial ovarian cancer, and abnormal methylation of Wnt5a gene promoter regions may be a new target for the treatment of epithelial ovarian cancer.
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Yang S, Dong F, Li D, Sun H, Wu B, Sun T, Wang Y, Shen P, Ji F, Zhou D. Persistent distention of colon damages interstitial cells of Cajal through Ca 2+ -ERK-AP-1-miR-34c-SCF deregulation. J Cell Mol Med 2017; 21:1881-1892. [PMID: 28580775 PMCID: PMC5571545 DOI: 10.1111/jcmm.13108] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 01/02/2017] [Indexed: 12/30/2022] Open
Abstract
Gastrointestinal motility disorders (GMDs) are attributed to loss of interstitial cells of Cajal (ICC), whose survival and function are deeply dependent on the activation of KIT/SCF signalling. Based on the facts that gastrointestinal distention is common in GMD patients and SCF produced by smooth muscle cells (SMCs) is usually decreased before ICC loss, we considered a possible contribution of persistent gastrointestinal distention/stretch to SCF deficiency. In this study, chronic colonic distention mouse model, diabetic gastrointestinal paresis mouse model, cultured mouse colonic SMCs and colon specimens from Hirschsprung's disease patients were used. The results showed that SCF was clearly decreased in distent colon of mice and patients, and microRNA array and real-time PCR indicated a concomitant increase of miR-34c in distent colon. A negative regulation of miR-34c on SCF expression was confirmed by luciferase reporter assays together with knock-down and overexpression of miR-34c in cultured colonic SMCs. Using EMSA and ChIP assays, we further consolidated that in response to persistent stretch, the transcription factor AP-1/c-Jun was highly activated in colonic SMCs and significantly promoted miR-34c transcription by binding to miR-34c promoter. Knock-down or overexpression of AP-1/c-Jun in cultured colonic SMCs leads to down- or up-regulation of miR-34c, respectively. In addition, the activation of AP-1/c-Jun was through ERK1/2 signalling provoked by Ca2+ overload in colonic SMCs that were subject to persistent stretch. In conclusion, our data demonstrated that persistent distention/stretch on colonic SMCs could suppress SCF production probably through Ca2+ -ERK-AP-1-miR-34c deregulation, resulting in ICC loss or impairment and GMD progress.
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Affiliation(s)
- Shu Yang
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Beijing, China
| | - Fang Dong
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Dandan Li
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Beijing, China
| | - Haimei Sun
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Beijing, China
| | - Bo Wu
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Beijing, China
| | - Tingyi Sun
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Beijing, China
| | - Yaxi Wang
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Ping Shen
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Fengqing Ji
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Beijing, China
| | - Deshan Zhou
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Beijing, China
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7
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Wang Y, Sun T, Sun H, Yang S, Li D, Zhou D. SCF/C-Kit/JNK/AP-1 Signaling Pathway Promotes Claudin-3 Expression in Colonic Epithelium and Colorectal Carcinoma. Int J Mol Sci 2017; 18:ijms18040765. [PMID: 28383479 PMCID: PMC5412349 DOI: 10.3390/ijms18040765] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Revised: 03/29/2017] [Accepted: 03/30/2017] [Indexed: 12/12/2022] Open
Abstract
Claudin-3 is a major protein of tight junctions (TJs) in the intestinal epithelium and is critical for maintaining cell-cell adhesion, barrier function, and epithelium polarity. Recent studies have shown high claudin-3 levels in several solid tumors, but the regulation mechanism of claudin-3 expression remains poorly understood. In the present study, colorectal cancer (CRC) tissues, HT-29 and DLD-1 CRC cell lines, CRC murine model (C57BL/6 mice) and c-kit loss-of-function mutant mice were used. We demonstrated that elevated claudin-3 levels were positively correlated with highly expressed c-kit in CRC tissues based upon analysis of protein expression. In vitro, claudin-3 expression was clearly increased in CRC cells by overexpressed c-kit or stimulated by exogenous recombinant human stem cell factor (rhSCF), while significantly decreased by the treatment with c-kit or c-Jun N-terminal kinase (JNK) inhibitors. Chromatin immunoprecipitation (ChIP) and luciferase reporter assay showed that SCF/c-kit signaling significantly promoted activator protein-1 (AP-1) binding with CLDN-3 promoter and enhanced its transcription activity. Furthermore, decreased expression of claudin-3 was obtained in the colonic epithelium from the c-Kit loss-of-function mutant mice. In conclusion, SCF/c-kit-JNK/AP-1 signaling pathway significantly promoted claudin-3 expression in colonic epithelium and CRC, which could contribute to epithelial barrier function maintenance and to CRC development.
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Affiliation(s)
- Yaxi Wang
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China.
- Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Beijing 100069, China.
| | - Tingyi Sun
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China.
- Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Beijing 100069, China.
- Cancer Institute of Capital Medical University, Beijing 100069, China.
| | - Haimei Sun
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China.
- Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Beijing 100069, China.
- Cancer Institute of Capital Medical University, Beijing 100069, China.
| | - Shu Yang
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China.
- Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Beijing 100069, China.
- Cancer Institute of Capital Medical University, Beijing 100069, China.
| | - Dandan Li
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China.
- Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Beijing 100069, China.
| | - Deshan Zhou
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China.
- Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Beijing 100069, China.
- Cancer Institute of Capital Medical University, Beijing 100069, China.
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Wang M, Liu C, Su Y, Zhang K, Zhang Y, Chen M, Ge M, Gu L, Lu T, Li N, Yu Z, Meng Q. miRNA-34c inhibits myoblasts proliferation by targeting YY1. Cell Cycle 2017; 16:1661-1672. [PMID: 28125315 DOI: 10.1080/15384101.2017.1281479] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
miRNAs are increasingly being implicated as key regulators of cell proliferation, apoptosis, and differentiation. miRNA-34c appears to play a crucial role in cancer pathogenesis wherein it exerts its effect as a tumor suppressor. However, the role of miR-34c in myoblast proliferation remains poorly understood. Here, we found that overexpression miR-34c inhibited myoblasts proliferation by reducing the protein and mRNA expression of cell cycle genes. In contrast, blocking the function of miR-34c promoted myoblasts proliferation and increased the protein and mRNA expression of cell cycle genes. Moreover, miR-34c directly targeted YY1 and inhibited its expression. Similar to overexpression miR-34c, knockdown of YY1 by siRNA suppressed myoblasts proliferation. Our study provides novel evidence for a role of miR-34c in inhibiting myoblasts proliferation by repressing YY1. Thus, miR-34c has the potential to be used to enhance skeletal muscle development and regeneration.
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Affiliation(s)
- Meng Wang
- a The State Key Laboratory for Agrobiotechnology, College of Biological Sciences, China Agricultural University , Beijing , China
| | - Chuncheng Liu
- a The State Key Laboratory for Agrobiotechnology, College of Biological Sciences, China Agricultural University , Beijing , China
| | - Yang Su
- a The State Key Laboratory for Agrobiotechnology, College of Biological Sciences, China Agricultural University , Beijing , China
| | - Kuo Zhang
- a The State Key Laboratory for Agrobiotechnology, College of Biological Sciences, China Agricultural University , Beijing , China
| | - Yuying Zhang
- a The State Key Laboratory for Agrobiotechnology, College of Biological Sciences, China Agricultural University , Beijing , China
| | - Min Chen
- a The State Key Laboratory for Agrobiotechnology, College of Biological Sciences, China Agricultural University , Beijing , China
| | - Mengxu Ge
- a The State Key Laboratory for Agrobiotechnology, College of Biological Sciences, China Agricultural University , Beijing , China
| | - Lijie Gu
- a The State Key Laboratory for Agrobiotechnology, College of Biological Sciences, China Agricultural University , Beijing , China
| | - Tianyu Lu
- a The State Key Laboratory for Agrobiotechnology, College of Biological Sciences, China Agricultural University , Beijing , China
| | - Ning Li
- a The State Key Laboratory for Agrobiotechnology, College of Biological Sciences, China Agricultural University , Beijing , China
| | - Zhengquan Yu
- a The State Key Laboratory for Agrobiotechnology, College of Biological Sciences, China Agricultural University , Beijing , China
| | - Qingyong Meng
- a The State Key Laboratory for Agrobiotechnology, College of Biological Sciences, China Agricultural University , Beijing , China
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