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Tang XM, Dai J, Sun HL. Thermal pretreatment promotes the protective effect of HSP70 against tendon adhesion in tendon healing by increasing HSP70 expression. Mol Med Rep 2019; 20:205-215. [PMID: 31115522 PMCID: PMC6579999 DOI: 10.3892/mmr.2019.10240] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 04/02/2019] [Indexed: 12/14/2022] Open
Abstract
Tendon adhesion is a substantial challenge for tendon repair. Thermal pretreatment (TP) may decrease inflammation by upregulating heat shock proteins (HSPs). The present study intends to identify the function that TP serves when combined with HSP70 overexpression in tendon healing and adhesion in rats. Sprague‑Dawley male rats were used to establish a surgically ablative tendon postoperative suture model, and the positive expression of the HSP70 protein was measured using immunohistochemistry. Changes to the blood vessels and collagenous fiber, in addition to the maximum tensile strength and the tendon sliding distance, were detected under a microscope. Finally, HSP70, tumor growth factor β (TGF‑β), and insulin‑like growth factor 1 (IGF‑1) mRNA and protein levels were all determined by employing reverse transcription‑quantitative polymerase chain reaction and western blot analysis methods. The positive expression of the HSP70 protein increased following TP. Furthermore, TP reduced the infiltration of inflammatory cells and improved the collagenous arrangement, accompanied by an increased maximum tensile force and tendon gliding distance following surgery. In addition, TP increased the mRNA and protein expression levels of HSP70, TGF‑β and IGF‑1. Altogether, TP increases HSP70 expression, thereby reducing postoperative traumatic inflammation and establishing tendon adhesion and promoting tendon healing. Thus, TP may be a potential strategy for the treatment of tendon adhesion.
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Affiliation(s)
- Xiao-Ming Tang
- Department of Orthopedics, The Affiliated Huai'an No. 1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China
| | - Jian Dai
- Department of Orthopedics, The Affiliated Huai'an No. 1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China
| | - Hai-Lang Sun
- Department of Orthopedics, The Affiliated Huai'an No. 1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China
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Qiu G, Ma D, Li F, Sun D, Zeng Z. lnc-PKD2-2-3, identified by long non-coding RNA expression profiling, is associated with pejorative tumor features and poor prognosis, enhances cancer stemness and may serve as cancer stem-cell marker in cholangiocarcinoma. Int J Oncol 2019; 55:45-58. [PMID: 31059014 PMCID: PMC6561618 DOI: 10.3892/ijo.2019.4798] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 03/21/2019] [Indexed: 12/24/2022] Open
Abstract
The present study aimed to explore the long non-coding RNA (lncRNA) expression profiles and correlation of lnc-PKD2-2-3 with tumor features and prognosis, and to investigate its effect on regulating cancer-cell stemness and its potential as a cancer stem cell (CSC) marker in cholangiocarcinoma (CCA). lncRNA expression profiles were determined in 3 pairs of CCA tumors and adjacent tissues by microarray analysis, and lnc-PKD2-2-3 expression was then validated in 60 paired samples by reverse transcription-quantitative polymerase chain reaction (RT-qPCR). Expression of common CSC markers [(CD44, CD133 and octamer-binding transcription factor 4 (OCT4)], CD44+CD133+ cell proportions, sphere formation efficiency and drug resistance to 5-fluorouracil (5-FU) were measured following ectopic overexpression of lnc-PKD2-2-3 or silencing via small hairpin RNA lentivirus transfection into the TFK-1 and Huh-28 CCA cell lines. Finally, lnc-PKD2-2-3 expression was measured in CCA stem-like cells and normal CCA cells. The results from the microarray analysis identified a total of 4,223 upregulated and 4,596 downregulated lncRNAs between CCA tumor tissue and paired adjacent tissue, which were enriched in regulating cancer-associated pathways. RT-qPCR validation revealed that lnc-PKD2-2-3 was upregulated in CCA and associated with a higher Eastern Cooperative Oncology Group performance score, poor differentiation, advanced TNM stage, increased carcinoembryonic antigen and poor overall survival in CCA patients. In vitro, lnc-PKD2-2-3 increased CD44, CD133 and OCT4 expression as well as the CD44+CD133+ cell proportion, raised the sphere formation efficiency and enhanced drug resistance to 5-FU in TFK-1 and Huh-28 cells. In addition, lnc-PKD2-2-3 was positively correlated with CSC markers in CCA tumor tissues and was markedly upregulated in CCA stem-like cells compared with that in normal CCA cells. In conclusion, lnc-PKD2-2-3, selected by lncRNA expression profiling, was associated with pejorative tumor features and poor prognosis, enhanced cancer stemness and may serve as a CSC marker in CCA.
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Affiliation(s)
- Gongcai Qiu
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Donglai Ma
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Fujun Li
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Dongsheng Sun
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Zhaolin Zeng
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
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Zhang H, Wang X, Huang H, Wang Y, Zhang F, Wang S. Hsa_circ_0067997 promotes the progression of gastric cancer by inhibition of miR-515-5p and activation of X chromosome-linked inhibitor of apoptosis (XIAP). ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2019; 47:308-318. [PMID: 30688097 DOI: 10.1080/21691401.2018.1553787] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Circular RNAs (circRNAs) have been revealed to play vital roles in modulating gene expression and participate in several pathological responses including gastric cancer (GC). However, the larger numbers of the circRNAs in GC progression remain undetermined. In the present study, four GC related circRNAs expression profiles from the Gene Expression Omnibus (GEO) database were enrolled. We identified hsa_ circRNA_00067997 (circ_0067997) as an oncogene in GC. qRT-PCR was used to validate the expression of circ_0067997 in GC tissues and cell lines. The results revealed that circ_0067997 was upregulated in GC, and high circ_0067997 expression was associated with the poor overall survival rate of GC patients. Knockdown of circ_0067997 significantly reduced cell viability, inhibited colony formation, and attenuated invasive ability, whereas overexpression of circ_0067997 exhibited opposed effects. Circ_0067997 was identified to be a sponge for miR-515-5p directly. Moreover, XIAP was demonstrated to be targeted and regulated by miR-515-5p. In conclusion, circ_0067997 was identified to be an oncogene in GC by regulating miR-515-5p/XIAP axis.
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Affiliation(s)
- Haibo Zhang
- a Department of Gastroenterology , The People's Hospital of Anyang city , Anyang , China.,b Graduate School, Xinxiang Medical University , Xinxiang , China
| | - Xiumin Wang
- a Department of Gastroenterology , The People's Hospital of Anyang city , Anyang , China
| | - Hongchun Huang
- a Department of Gastroenterology , The People's Hospital of Anyang city , Anyang , China
| | - Yongfeng Wang
- c Department of Pathology , The People's Hospital of Anyang city , Anyang , China
| | - Fangfang Zhang
- d The Third Clinical College, Xinxiang Medical University , Xinxiang , China.,e Collaborative Innovation Laboratory , Xinxiang Medical University , Xinxiang , China
| | - Shaofang Wang
- b Graduate School, Xinxiang Medical University , Xinxiang , China.,f Department of Respiratory Medicine , The People's Hospital of Anyang city , Anyang , China
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Gong F, Dong D, Zhang T, Xu W. Long non-coding RNA FENDRR attenuates the stemness of non-small cell lung cancer cells via decreasing multidrug resistance gene 1 (MDR1) expression through competitively binding with RNA binding protein HuR. Eur J Pharmacol 2019; 853:345-352. [PMID: 30981768 DOI: 10.1016/j.ejphar.2019.04.022] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 04/07/2019] [Accepted: 04/08/2019] [Indexed: 10/27/2022]
Abstract
The roles of long non-coding RNA (lncRNA) FENDRR in non-small cell lung cancer (NSCLC) cells progression have never been revealed. As cancer stem cells (CSCs) act important roles in tumor progression, here, we focused on FENDRR roles in NSCLC cell stemness. We found that lncRNA FENDRR expression was significantly decreased in lung cancer tissues and cells, especially in NSCLC cells. Then we constructed NSCLC cells with FENDRR stable overexpression and revealed that FENDRR overexpression attenuated the stemness of NSCLC cells, evident by decreased stemness markers expression and capacity of cell spheroid formation. Mechanistically, we found that FENDRR could directly and specifically bind to the 3' untranslated region (3'UTR) of multidrug resistance gene 1 (MDR1), hinder the binding of RNA binding protein HuR to MDR1 3'UTR and thus decrease MDR1 expression. Finally, we demonstrated that FENDRR exerted its effects on NSCLC cell stemness through the HuR/MDR1 axis. Our results suggest that FENDRR attenuates NSCLC cell stemness through inhibiting the HuR/MDR1 axis.
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Affiliation(s)
- Fangchao Gong
- Department of Thoracic Surgery, The First Hospital of Jilin University, Changchun, Jilin, 130021, China
| | - Dong Dong
- Department of Radiology, The First Hospital of Jilin University, Changchun, Jilin, 130021, China
| | - Ting Zhang
- Department of Abdominal Ultrasound, The First Hospital of Jilin University, Changchun, Jilin, 130021, China
| | - Weiling Xu
- Department of Radiology, The First Hospital of Jilin University, Changchun, Jilin, 130021, China.
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MIR100HG: a credible prognostic biomarker and an oncogenic lncRNA in gastric cancer. Biosci Rep 2019; 39:BSR20190171. [PMID: 30886062 PMCID: PMC6449568 DOI: 10.1042/bsr20190171] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 03/07/2019] [Accepted: 03/11/2019] [Indexed: 12/24/2022] Open
Abstract
The MIR100HG expression was observed to be up-regulated or down-regulated in human cancer tissues depending on tumor types. However, there was no report about the role of MIR100HG in gastric cancer. In our study, we first found levels of MIR100HG expression were increased in gastric cancer cell lines and tissue samples compared with normal gastric epithelial cell line and adjacent normal gastric mucosa tissue samples, respectively. Moreover, high MIR100HG expression was positively associated with clinical stage, tumor invasion, lymph node metastasis, and distant metastasis in gastric cancer patients. Survival analysis showed MIR100HG expression was negative correlated with clinical outcome in gastric cancer patients from The Cancer Genome Atlas (TCGA) database or our study, and high MIR100HG expression served as an independent poor prognostic factor for gastric cancer patient's overall survival. The study in vitro suggested down-regulation of MIR100HG expression inhibits cell proliferation, migration, and invasion in gastric cancer. In conclusion, MIR100HG is a credible prognostic biomarker and functions as an oncogenic lncRNA in gastric cancer.
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Zhang Y, Fang Z, Guo X, Dong H, Zhou K, Huang Z, Xiao Z. lncRNA B4GALT1-AS1 promotes colon cancer cell stemness and migration by recruiting YAP to the nucleus and enhancing YAP transcriptional activity. J Cell Physiol 2019; 234:18524-18534. [PMID: 30912138 DOI: 10.1002/jcp.28489] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 02/19/2019] [Accepted: 02/20/2019] [Indexed: 12/21/2022]
Abstract
Here, an RNA-sequencing assay revealed long noncoding RNAs (lncRNAs) with an ectopic expression between colon cancer (CC) and normal colon epithelial cells, in which lncRNA B4GALT1-AS1 exhibited the highest change. A 3-(4,5-dimethythiazol-2-yl)-2,5-diphenyl tetrazolium bromide assay indicated that B4GALT1-AS1 knockdown had no effect on CC cell viability, however, cell clone formation analysis showed that B4GALT1-AS1 knockdown attenuated the capacity of cell clone formation. Additionally, gene set enrichment analysis of this data set revealed that positive enrichment of stem cell-differentiated signatures and negative embryonic stem cell function and adult tissue stem module were observed in CC cells with B4GALT1-AS1 knockdown. Furthermore, B4GALT1-AS1 knockdown suppressed the stemness-marker expression, the ability of cell spheroid formation, and ALDH1 activity in CC cells. Mechanistically, RNA-sequencing data found that the Hippo pathway in cancer was shown on pathways mostly upregulated by B4GALT1-AS1 knockdown, and B4GALT1-AS1 directly bound to the yes-associated protein (YAP), a downstream executor of the Hippo pathway, and B4GALT1-AS1 knockdown promoted the nuclear cytoplasm translocation of YAP and decreased YAP transcriptional activity. Notably, YAP overexpression attenuated the inhibitory effects mediated by B4GALT1-AS1 knockdown. Our results identify the direct binding of lncRNA B4GALT1-AS1 to YAP, which is responsible for CC cell stemness.
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Affiliation(s)
- Yang Zhang
- Department of Colorectal and Anal Surgery, Hepatobiliary and Enteric Surgery Center, Xiangya Hospital, Central South University, Changsha, China
| | - Zhixue Fang
- Department of General Surgery, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan, China
| | - Xiong Guo
- Department of Colorectal and Anal Surgery, Hepatobiliary and Enteric Surgery Center, Xiangya Hospital, Central South University, Changsha, China
| | - Hongyu Dong
- Department of General Surgery, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan, China
| | - Ke Zhou
- Department of General Surgery, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan, China
| | - Zhongcheng Huang
- Department of General Surgery, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan, China
| | - Zhigang Xiao
- Department of General Surgery, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan, China
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Wu H, He Y, Chen H, Liu Y, Wei B, Chen G, Lin H, Lin H. LncRNA THOR increases osteosarcoma cell stemness and migration by enhancing SOX9 mRNA stability. FEBS Open Bio 2019; 9:781-790. [PMID: 30984551 PMCID: PMC6443997 DOI: 10.1002/2211-5463.12620] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 02/11/2019] [Accepted: 02/20/2019] [Indexed: 12/31/2022] Open
Abstract
Although the long non-coding RNA THOR has been reported to promote cancer stem cell expansion in liver cancer and gastric cancer, its effects on osteosarcoma (OS) cells remain unclear. Here, we investigated the roles of THOR in the stemness and migration of OS cells. We report that the level of THOR is remarkably upregulated in OS cell spheroids compared to that in OS adherent cells. THOR overexpression increased spheroid formation ability and aldehyde dehydrogenase 1 (ALDH1) activity in OS adherent cells, and the opposite effect was observed in spheroids with THOR knockdown. Additionally, the spheroids formed by OS adherent cells exhibited a stronger migration ability, which was attenuated by THOR knockdown, and THOR overexpression increased OS cell migration. Mechanistically, mRNA stability, luciferase reporter, and RNA-RNA in vitro interaction assays indicated that THOR can directly bind to the middle region of the SOX9 3'-untranslated region (UTR), and enhances its mRNA stability, thereby increasing its expression. Notably, SOX9 knockdown reduced the ability of THOR overexpression to promote the stemness of OS cells. These findings indicate that the lncRNA THOR can promote the stemness and migration of OS cells by directly binding to the middle region of SOX9 3'UTR, thereby enhancing SOX9 mRNA stability and increasing its expression; thus, we provide information that may be of use in identifying potential targets for OS treatment.
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Affiliation(s)
- Haojun Wu
- The Orthopaedic Center The Affiliated Hospital of Guangdong Medical University Zhanjiang China
| | - Yanxia He
- The Operating Room The Affiliated Hospital of Guangdong Medical University Zhanjiang China
| | - Hang Chen
- The Orthopaedic Center The Affiliated Hospital of Guangdong Medical University Zhanjiang China
| | - Yanzhi Liu
- Department of Pharmacology The Affiliated Hospital of Guangdong Medical University Zhanjiang China
| | - Bo Wei
- The Orthopaedic Center The Affiliated Hospital of Guangdong Medical University Zhanjiang China
| | - Guanghua Chen
- The Orthopaedic Center The Affiliated Hospital of Guangdong Medical University Zhanjiang China
| | - Han Lin
- The Orthopaedic Center The Affiliated Hospital of Guangdong Medical University Zhanjiang China
| | - Hao Lin
- The Orthopaedic Center The Affiliated Hospital of Guangdong Medical University Zhanjiang China
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58
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Cao M, Zhao J, Hu G. Genome-wide methods for investigating long noncoding RNAs. Biomed Pharmacother 2019; 111:395-401. [PMID: 30594777 PMCID: PMC6401243 DOI: 10.1016/j.biopha.2018.12.078] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 11/27/2018] [Accepted: 12/17/2018] [Indexed: 12/21/2022] Open
Abstract
Long noncoding RNAs (lncRNAs) are large RNA transcripts that do not code for proteins but exert their effects in the form of RNA. To date many thousands of lncRNAs have been identified, their molecular functions and mechanisms of action however are largely unknown. The development of high-throughput experimental technologies, such as ChIRP (Chromatin isolation by RNA purification), CHART (Capture Hybridization Analysis of RNA Targets), RAP (RNA antisense purification), RIP (RNA Immunoprecipitation), CLIP (cross-linking and immunoprecipitation) and RNA pull-down, has led to a rapid expansion of lncRNA research and resulted in many publicly-available databases. This review provides an overview of the current methodologies available for discovering and investigating functions of lncRNAs in various human diseases. A comparison and application of these methods are also included. Finally, this paper surveys current databases containing annotations, interactome networks and functions of lncRNAs. The appropriate use of these methods and databases will provide not only high-resolution functional features of lncRNAs, but also enhance our understanding of the underlying mechanisms by which lncRNAs regulate a variety of biological processes.
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Affiliation(s)
- Mei Cao
- Core Laboratory, School of Medicine, Sichuan Provincial People's Hospital Affiliated to University of Electronic Science and Technology of China, Chengdu, 610072, People's Republic of China
| | - Jian Zhao
- Key Laboratory of Biological Resource and Ecological Environment of Chinese Education Ministry, College of Life Sciences, Sichuan University, No.24 South Section 1, Yihuan Road, Chengdu, 610064, People's Republic of China.
| | - Guoku Hu
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE, USA.
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