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Zhang L, Cao L, Liu J, Duan L, Zhou W, Li T, Guan L, Wu X, Zhang H. Identification of a novel MSI-related ceRNA network for predicting the prognosis and immunotherapy response of gastric cancer. Aging (Albany NY) 2023; 15:204794. [PMID: 37310469 PMCID: PMC10292885 DOI: 10.18632/aging.204794] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 05/03/2023] [Indexed: 06/14/2023]
Abstract
BACKGROUND Mounting evidence has underscored the pivotal role of the competitive endogenous RNA (ceRNA) regulatory networks among various cancers. However, the behavior characteristics and complexity of the ceRNA network in Gastric cancer (GC) remains unclear. In this study, we aimed to clarify a Microsatellite instability (MSI)-related ceRNA regulatory network and identify potential prognostic markers associated with GC. METHODS AND RESULTS We extracted transcriptome data of GC patients from The Cancer Genome Atlas (TCGA) and identified differentially expressed lncRNAs, miRNAs and mRNAs based on MSI status. A hub ceRNA network including 1 lncRNAs (MIR99AHG), 2 miRNAs and 26 mRNAs specific to MSI was established in GC. We further constructed a prognostic model with seven target mRNAs by Lasso Cox regression, which yielded AUC values of 0.76. The prognostic model was further validated in an external independent dataset that integrated three GEO datasets. The characterization of immune cell infiltration and immunotherapy effects between high-risk and low-risk groups were then analyzed. Immune cell infiltration was significantly different between high- and low-risk groups based on risk scores. GC patients with lower risk scores correlated with better immune checkpoint inhibitor therapy (ICI) response. We further validated the expression and regulatory relationship of the ceRNA network in vitro experiments, and also confirmed the relationship between MIR99AHG and PD-L1. CONCLUSIONS Our research provides in-depth insights on the role of MSI-related ceRNA in GC and the prognosis and ICIs therapy response of GC patients can be assessed by the risk model based on MSI-related ceRNA network.
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Affiliation(s)
- Lei Zhang
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an 710032, Shaanxi Province, China
| | - Lu Cao
- Department of Biomedical Engineering, Air Force Hospital of Eastern Theater Command, Nanjing 210001, Jiangsu Province, China
| | - Jinqiang Liu
- State Key Laboratory of Cancer Biology and National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi’an 710032, Shaanxi Province, China
| | - Lili Duan
- State Key Laboratory of Cancer Biology and National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi’an 710032, Shaanxi Province, China
| | - Wei Zhou
- State Key Laboratory of Cancer Biology and National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi’an 710032, Shaanxi Province, China
| | - Ting Li
- State Key Laboratory of Cancer Biology and National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi’an 710032, Shaanxi Province, China
| | - Lei Guan
- State Key Laboratory of Cancer Biology and National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi’an 710032, Shaanxi Province, China
| | - Xiaoming Wu
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an 710032, Shaanxi Province, China
| | - Huqin Zhang
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an 710032, Shaanxi Province, China
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Tang J, Chen J, Wang Y, Zhou S. The role of
MiRNA
‐433 in malignant tumors of digestive tract as tumor suppressor. Cancer Rep (Hoboken) 2022; 5:e1694. [PMID: 35976177 PMCID: PMC9458491 DOI: 10.1002/cnr2.1694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 07/18/2022] [Accepted: 07/27/2022] [Indexed: 12/24/2022] Open
Abstract
Background MicroRNAs (miRNAs) are a class of short non‐coding RNAs with a length of approximate 22 nuclei acids that can be expressed both as an oncogene and tumor suppressor gene in human cancers. MiRNAs can participate in the post‐ transcriptional regulation of gene expression, and regulate the several cancer‐related processes, including proliferation, apoptosis, metastasis, etc. Recent findings Expression of miRNA‐433 has been reported to vary in different tumors and affected by various factors. We have summarized the different previous studies and found that miRNA‐433 can significantly inhibit the growth of the cancer cells not only in malignant tumors of the digestive tract, but also in lung cancer, breast cancer, cervical cancer, ovarian cancer, bladder cancer, renal carcinoma, glioma, retinoblastoma and osteosarcoma. Conclusion When the expression of miRNA‐433 was up‐regulated, the proliferation, metastasis and invasion abilities of the malignant tumor cells were significantly inhibited. At the same time, the potential mechanisms through which miRNA‐433 can suppress the growth and metastasis of the cancer cells were found to be basically the same, and involved modulation of the specific signaling pathways or target genes in the malignant tumors. Overall, it can be concluded that miRNA‐433 can serve as potential and valuable therapeutic target.
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Affiliation(s)
- Jie Tang
- General Surgery The Second Affiliated Hospital of Bengbu Medical College Bengbu China
| | - Jiawei Chen
- General Surgery The Second Affiliated Hospital of Bengbu Medical College Bengbu China
| | - Yongqiang Wang
- General Surgery The Second Affiliated Hospital of Bengbu Medical College Bengbu China
| | - Shaobo Zhou
- General Surgery The Second Affiliated Hospital of Bengbu Medical College Bengbu China
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3
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Tang SY, Zhou PJ, Meng Y, Zeng FR, Deng GT. Gastric cancer: An epigenetic view. World J Gastrointest Oncol 2022; 14:90-109. [PMID: 35116105 PMCID: PMC8790429 DOI: 10.4251/wjgo.v14.i1.90] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 05/17/2021] [Accepted: 12/23/2021] [Indexed: 02/06/2023] Open
Abstract
Gastric cancer (GC) poses a serious threat worldwide with unfavorable prognosis mainly due to late diagnosis and limited therapies. Therefore, precise molecular classification and search for potential targets are required for diagnosis and treatment, as GC is complicated and heterogeneous in nature. Accumulating evidence indicates that epigenetics plays a vital role in gastric carcinogenesis and progression, including histone modifications, DNA methylation and non-coding RNAs. Epigenetic biomarkers and drugs are currently under intensive evaluations to ensure efficient clinical utility in GC. In this review, key epigenetic alterations and related functions and mechanisms are summarized in GC. We focus on integration of existing epigenetic findings in GC for the bench-to-bedside translation of some pivotal epigenetic alterations into clinical practice and also describe the vacant field waiting for investigation.
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Affiliation(s)
- Si-Yuan Tang
- Department of Gastroenterology, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, China
| | - Pei-Jun Zhou
- Cancer Research Institute, School of Basic Medicine Science, Central South University, School of Basic Medicine Science, Central South University 410008, Hunan Province, China
| | - Yu Meng
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, China
| | - Fu-Rong Zeng
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, China
| | - Guang-Tong Deng
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, China
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Lv S, Liu L, Yang B, Zhao X. Association of miR-9-5p and NFIC in the progression of gastric cancer. Hum Exp Toxicol 2022; 41:9603271221084671. [PMID: 35481447 DOI: 10.1177/09603271221084671] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND Gastric cancer is the most common malignant neoplasm of digestive system. Herein, we aim to detect the expression of nuclear factor I C (NFIC) in gastric cancer cells, and to explore the effect and mechanism of its expression on the development of gastric cancer. METHODS qPCR and Western blot assays were carried out to detect NFIC expression. Then, BGC-823 and SGC-7901 cell lines were selected to perform the following functional experiments. The function of NFIC on gastric cancer cells was analyzed by biological experiments. The associations between miR-9-5p and NFIC were searched on the bioinformatics website and identified by dual luciferase assay. The effects of miR-9-5p and NFIC on cells were verified by co-transfection experiments. The related genes expression was examined by Western blot. RESULTS A marked augmentation of NFIC was observed in gastric cancer cells. Knockdown of NFIC significantly inhibited the viability, colony formation, invasion, and migration of gastric cancer cells. Overexpression of miR-9-5p obviously suppressed the viability, colony formation, invasion, and migration of gastric cancer cells, and this phenomenon was aggravated by si-NFIC. Additionally, the expression levels of PCNA, vimentin, and Snail were obviously decreased after miR-9-5p mimic or/and si-NFIC treatment. CONCLUSIONS These results suggested that NFIC was highly expressed in gastric cancer cells, and knockdown of NFIC suppressed the growth and mobility of gastric cancer cells; miR-9-5p was identified as an upstream regulator of NFIC and suppressed the malignant behaviors of gastric cancer cells by targeting NFIC through affecting PCNA, vimentin, and Snail expression.
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Affiliation(s)
- Shihong Lv
- Department of Gastroenterology, The Second Affiliated Hospital of Mudanjiang Medical College, Mudanjiang, China
| | - Lei Liu
- Department of Gastroenterology, The Second Affiliated Hospital of Mudanjiang Medical College, Mudanjiang, China
| | - Baijing Yang
- Department of Gastroenterology, The Second Affiliated Hospital of Mudanjiang Medical College, Mudanjiang, China
| | - Xiaohua Zhao
- Respiratory Department, The Second Affiliated Hospital of Mudanjiang Medical College, Mudanjiang, China
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5
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Guo Y, Yin J, Dai Y, Guan Y, Chen P, Chen Y, Huang C, Lu YJ, Zhang L, Song D. A Novel CpG Methylation Risk Indicator for Predicting Prognosis in Bladder Cancer. Front Cell Dev Biol 2021; 9:642650. [PMID: 34540821 PMCID: PMC8440888 DOI: 10.3389/fcell.2021.642650] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 08/05/2021] [Indexed: 01/15/2023] Open
Abstract
Purpose Bladder cancer (BLCA) is one of the most common cancers worldwide. In a large proportion of BLCA patients, disease recurs and/or progress after resection, which remains a major clinical issue in BLCA management. Therefore, it is vital to identify prognostic biomarkers for treatment stratification. We investigated the efficiency of CpG methylation for the potential to be a prognostic biomarker for patients with BLCA. Patients and Methods Overall, 357 BLCA patients from The Cancer Genome Atlas (TCGA) were randomly separated into the training and internal validation cohorts. Least absolute shrinkage and selector operation (LASSO) and support vector machine-recursive feature elimination (SVM-RFE) were used to select candidate CpGs and build the methylation risk score model, which was validated for its prognostic value in the validation cohort by Kaplan–Meier analysis. Hazard curves were generated to reveal the risk nodes throughout the follow-up. Gene Set Enrichment Analysis (GSEA) was used to reveal the potential biological pathways associated with the methylation model. Quantitative real-time polymerase chain reaction (PCR) and western blotting were performed to verify the expression level of the methylated genes. Results After incorporating the CpGs obtained by the two algorithms, CpG methylation of eight genes corresponding to TNFAIP8L3, KRTDAP, APC, ZC3H3, COL9A2, SLCO4A1, POU3F3, and ADARB2 were prominent candidate predictors in establishing a methylation risk score for BLCA (MRSB), which was used to divide the patients into high- and low-risk progression groups (p < 0.001). The effectiveness of the MRSB was validated in the internal cohort (p < 0.001). In the MRSB high-risk group, the hazard curve exhibited an initial wide, high peak within 10 months after treatment, whereas some gentle peaks around 2 years were noted. Furthermore, a nomogram comprising MRSB, age, sex, and tumor clinical stage was developed to predict the individual progression risk, and it performed well. Survival analysis implicated the effectiveness of MRSB, which remains significant in all the subgroup analysis based on the clinical features. A functional analysis of MRSB and the corresponding genes revealed potential pathways affecting tumor progression. Validation of quantitative real-time PCR and western blotting revealed that TNFAIP8L3 was upregulated in the BLCA tissues. Conclusion We developed the MRSB, an eight-gene-based methylation signature, which has great potential to be used to predict the post-surgery progression risk of BLCA.
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Affiliation(s)
- Yufeng Guo
- Department of Urology, The First Affiliated Hospital & Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Jianjian Yin
- Department of Pharmacology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Yuanheng Dai
- Department of Urology, The First Affiliated Hospital & Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Yudong Guan
- Department of Urology, The First Affiliated Hospital & Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Pinjin Chen
- Department of Urology, The First Affiliated Hospital & Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Yongqiang Chen
- Department of Urology, The First Affiliated Hospital & Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Chenzheng Huang
- Department of Pharmacology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Yong-Jie Lu
- Department of Urology, The First Affiliated Hospital & Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China.,Centre for Cancer Biomarkers and Biotherapeutics, Barts Cancer Institute, Queen Mary University of London, London, United Kingdom
| | - Lirong Zhang
- Department of Pharmacology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Dongkui Song
- Department of Urology, The First Affiliated Hospital & Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China
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6
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Chen X, Li X, Wang J, Zhao L, Peng X, Zhang C, Liu K, Huang G, Lai Y. Breast invasive ductal carcinoma diagnosis with a three-miRNA panel in serum. Biomark Med 2021; 15:951-963. [PMID: 34293926 DOI: 10.2217/bmm-2020-0785] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Aim: Breast cancer, especially invasive ductal carcinoma (IDC), is the cause of a great clinical burden. miRNA could be considered as a noninvasive biomarkers for IDC diagnosis. Materials & methods: Two hundred and sixty participants (135 IDC patients and 125 healthy controls) were enrolled in a three-cohort study. The expression of 28 miRNAs in serum were detected with quantitative reverse transcription-PCR. Bioinformatic analysis was used for predicting the target genes of three selected miRNAs. Results: The expression level of seven miRNAs (miR-9-5p, miR-34b-3p, miR-1-3p, miR-146a-5p, miR-20a-5p, miR-34a-5p, miR-125b-5p) was discrepant at the validation cohort. Through statistical test, a three-miRNA panel (miR-9-5p, miR-34b-3p, miR-146a-5p) was significant for IDC diagnosis (AUC = 0.880, sensitivity = 86.25%, specificity = 81.25%). Conclusion: The three-miRNA panel in serum could be used as a noninvasive biomarker in the diagnosis of IDC.
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Affiliation(s)
- Xuan Chen
- Shantou University Medical College, Shantou, Guangdong, 515041, China
- Department of Urology, Guangdong & Shenzhen Key Laboratory of Male Reproductive Medicine & Genetics, Peking University Shenzhen Hospital, Shenzhen, Guangdong, 518036, China
| | - Xinji Li
- Shantou University Medical College, Shantou, Guangdong, 515041, China
- Department of Urology, Guangdong & Shenzhen Key Laboratory of Male Reproductive Medicine & Genetics, Peking University Shenzhen Hospital, Shenzhen, Guangdong, 518036, China
| | - Jingyao Wang
- Department of Urology, Guangdong & Shenzhen Key Laboratory of Male Reproductive Medicine & Genetics, Peking University Shenzhen Hospital, Shenzhen, Guangdong, 518036, China
| | - Liwen Zhao
- Department of Urology, Guangdong & Shenzhen Key Laboratory of Male Reproductive Medicine & Genetics, Peking University Shenzhen Hospital, Shenzhen, Guangdong, 518036, China
- Anhui Medical University, Hefei, Anhui, 230032, China
| | - Xiqi Peng
- Shantou University Medical College, Shantou, Guangdong, 515041, China
- Department of Urology, Guangdong & Shenzhen Key Laboratory of Male Reproductive Medicine & Genetics, Peking University Shenzhen Hospital, Shenzhen, Guangdong, 518036, China
| | - Chunduo Zhang
- Department of Urology, Guangdong & Shenzhen Key Laboratory of Male Reproductive Medicine & Genetics, Peking University Shenzhen Hospital, Shenzhen, Guangdong, 518036, China
| | - Kaihao Liu
- Department of Urology, Guangdong & Shenzhen Key Laboratory of Male Reproductive Medicine & Genetics, Peking University Shenzhen Hospital, Shenzhen, Guangdong, 518036, China
- Anhui Medical University, Hefei, Anhui, 230032, China
| | - Guocheng Huang
- Shantou University Medical College, Shantou, Guangdong, 515041, China
- Department of Urology, Guangdong & Shenzhen Key Laboratory of Male Reproductive Medicine & Genetics, Peking University Shenzhen Hospital, Shenzhen, Guangdong, 518036, China
| | - Yongqing Lai
- Department of Urology, Guangdong & Shenzhen Key Laboratory of Male Reproductive Medicine & Genetics, Peking University Shenzhen Hospital, Shenzhen, Guangdong, 518036, China
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Mahmoud MM, Sanad EF, Hamdy NM. MicroRNAs' role in the environment-related non-communicable diseases and link to multidrug resistance, regulation, or alteration. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:36984-37000. [PMID: 34046834 DOI: 10.1007/s11356-021-14550-w] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 05/19/2021] [Indexed: 05/28/2023]
Abstract
The discovery of microRNAs (miRNAs) 20 years ago has advocated a new era of "small molecular genetics." About 2000 miRNAs are present that regulate one third of the genome. MiRNA dysregulated expression arising as a response to our environment insult or stress or changes may contribute to several diseases, namely non-communicable diseases, including tumor growth. Their presence in body fluids, reflecting level alteration in various cancers, merit circulating miRNAs as the "next-generation biomarkers" for early-stage tumor diagnosis and/or prognosis. Herein, we performed a comprehensive literature search focusing on the origin, biosynthesis, and role of miRNAs and summarized the foremost studies centering on miR value as non-invasive biomarkers in different environment-related non-communicable diseases, including various cancer types. Moreover, during chemotherapy, many miRNAs were linked to multidrug resistance, via modulating numerous, environment triggered or not, biological processes and/or pathways that will be highlighted as well.
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Affiliation(s)
- Marwa M Mahmoud
- Biochemistry Department, Faculty of Pharmacy, Ain Shams University, 11566, Abassia, Cairo, Egypt
| | - Eman F Sanad
- Biochemistry Department, Faculty of Pharmacy, Ain Shams University, 11566, Abassia, Cairo, Egypt
| | - Nadia M Hamdy
- Biochemistry Department, Faculty of Pharmacy, Ain Shams University, 11566, Abassia, Cairo, Egypt.
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8
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Cai JL, Zhu GQ, Du JX, Wang B, Wan JL, Xiao K, Dai Z. Identification and validation of a new gene signature predicting prognosis of hepatocellular carcinoma patients by network analysis of stemness indices. Expert Rev Gastroenterol Hepatol 2021; 15:699-709. [PMID: 33131341 DOI: 10.1080/17474124.2021.1845142] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Background: Stem cells play an important role in hepatocellular carcinoma (HCC). However, their precise effect on HCC tumorigenesis and progression remains unclear. The present study aimed to characterize stem cell-related gene expression in HCC.Methods: The mRNA expression-based stemness index (mRNAsi) was used to analyze the clinical characteristics and prognosis of HCC patients. The weighted gene co-expression network analysis (WGCNA) was used to construct a gene co-expression network of 374 HCC patients. Finally, six genes were used to construct the prognosis signature.Results: HCC patients had a higher mRNAsi score than healthy people, suggesting poor prognosis. Two gene modules highly related to mRNAsi were identified. Multivariate Cox analysis was carried out to establish a Cox proportional risk regression model. The risk score for each patient was the sum of the product of each gene expression and its coefficient. Survival analysis suggested that the low-risk group had a significantly better prognosis.Conclusions: The established six-gene signature was able to predict patient prognosis accurately. This new signature should be verified in prospective studies in order to determine patient prognosis in clinical decision-making.
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Affiliation(s)
- Jia-Liang Cai
- Key Laboratory of Carcinogenesis and Cancer Invasion, Fudan University, Ministry of Education, Shanghai, China
| | - Gui-Qi Zhu
- Key Laboratory of Carcinogenesis and Cancer Invasion, Fudan University, Ministry of Education, Shanghai, China
| | - Jun-Xian Du
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Biao Wang
- Key Laboratory of Carcinogenesis and Cancer Invasion, Fudan University, Ministry of Education, Shanghai, China
| | - Jing-Lei Wan
- Key Laboratory of Carcinogenesis and Cancer Invasion, Fudan University, Ministry of Education, Shanghai, China
| | - Kun Xiao
- Department of Liver Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Zhi Dai
- Key Laboratory of Carcinogenesis and Cancer Invasion, Fudan University, Ministry of Education, Shanghai, China
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9
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Chen W, Yu J, Xie R, Zhou T, Xiong C, Zhang S, Zhong M. Roles of the SNHG7/microRNA‑9‑5p/DPP4 ceRNA network in the growth and 131I resistance of thyroid carcinoma cells through PI3K/Akt activation. Oncol Rep 2021; 45:3. [PMID: 33649840 PMCID: PMC7877006 DOI: 10.3892/or.2021.7954] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 07/31/2020] [Indexed: 02/01/2023] Open
Abstract
Radioactive iodine (RAI, 131I) therapy is the main treatment for thyroid carcinoma (TC). Long noncoding RNA (lncRNA)/microRNA (miR) competing endogenous RNA (ceRNA) networks have aroused great interest for their roles in gene expression. The present study aimed to investigate the effect of lncRNA SNHG7 on the growth and 131I resistance of TC. Differentially expressed lncRNAs in TC and paracancerous tissues were analyzed. The binding of miR-9-5p with small nucleolar RNA host gene 7 (SNHG7) and dipeptidyl-peptidase 4 (DPP4) was identified. Gain- and loss-of-function analyses of SNHG7 and miR-9-5p were performed to determine their effects on the growth and 131I resistance of TC cells. The activity of the PI3K/Akt pathway was evaluated. Consequently, upregulated SNHG7 was revealed in TC tissues and correlated with 131I resistance. Silencing of SNHG7 or overexpressing miR-9-5p inhibited the growth and 131I resistance of TC cells. SNHG7 acted as a ceRNA of miR-9-5p to enhance DPP4 expression. Overexpressed SNHG7 increased DPP4 expression and activated the PI3K/Akt signaling pathway by sponging miR-9-5p. The in vitro results were reproduced in vivo. In summary, the present study provided evidence that the SNHG7/miR-9-5p/DPP4 ceRNA network could promote the growth and 131I resistance of TC cells via PI3K/Akt activation. The present study may offer novel options for TC treatment.
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Affiliation(s)
- Wanzhi Chen
- Department of Thyroid Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Jichun Yu
- Department of Thyroid Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Rong Xie
- Department of Thyroid Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Tao Zhou
- Department of Thyroid Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Chengfeng Xiong
- Department of Thyroid Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Shuyong Zhang
- Department of Thyroid Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Meijun Zhong
- Department of Thyroid Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
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Li Q, Yu D, Yu Z, Gao Q, Chen R, Zhou L, Wang R, Li Y, Qian Y, Zhao J, Rosell R, Tao M, Xie Y, Xu C. TIPE3 promotes non-small cell lung cancer progression via the protein kinase B/extracellular signal-regulated kinase 1/2-glycogen synthase kinase 3β-β-catenin/Snail axis. Transl Lung Cancer Res 2021; 10:936-954. [PMID: 33718034 PMCID: PMC7947417 DOI: 10.21037/tlcr-21-147] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Background Tumor necrosis factor-α-induced protein 8-like 3 (TNFAIP8L3, also called TIPE3) has been shown to activate PI3K-AKT and MEK-ERK pathways. However, the roles of TIPE3 in progression of lung cancer are largely unknown. Methods Immunohistochemistry and western blotting were carried out to analyze the expression of TIPE3 in lung cancer clinical tissues and cells. TIPE3-overexpressing and knock-down NSCLC cell lines were established by transfer of TIPE3 coding sequence and shRNA, respectively. In vitro functional assays were performed to assess the effects of TIPE3 on proliferation and metastasis of NSCLC cells. Tumor xenograft mouse model was used to examine the roles of TIPE3 in growth of NSCLC cells in vivo. Western blotting, immunofluorescence, and immunohistochemistry were conducted to evaluate the association of TIPE3 and molecules related to AKT/ERK1/2-GSK3β-β-catenin/Snail pathway. PI3K, MEK, or GSK3β kinase and proteasome inhibition assays as well as β-Trcp and STUB1 siRNA assays were employed to determine the contribution of AKT/ERK1/2-GSK3β signaling and ubiquitin-proteasome pathway to the regulatory effects of TIPE3 on expression of β-catenin, Snail1, and Slug. Results We demonstrated that TIPE3 was elevated in lung cancer tissues and cells. The expression level of TIPE3 was positively correlated with malignant clinicopathological characteristics of lung cancer patients, such as tumor size, pathologic stage, and lymph node metastasis. Knockdown of TIPE3 suppressed the proliferation and growth of NSCLC cells as well as their migration and invasion ability, whereas TIPE3 overexpression facilitated these biological processes. Mechanistic data showed that TIPE3 promoted AKT and ERK1/2 signaling, inactivated GSK3β activity, and enhanced the expression and transcriptional activity of β-catenin, Snail1, and Slug in NSCLC cells. Kinase or proteasome inhibition and β-Trcp or STUB1 knockdown assays further revealed that TIPE3 upregulated β-catenin, Snail1, and Slug via the AKT/ERK1/2-GSK3β pathway, in an ubiquitin-proteasome-dependent manner. More importantly, clinical data demonstrated that the expression level of TIPE3 was positively associated with the activation of AKT/ERK1/2-GSK3β-β-catenin/Snail pathway in lung cancer. Conclusions Our findings indicate that upregulation of TIPE3 promotes the progression of human NSCLC considerably by activating β-catenin, Snail1, and Slug transcriptional signaling via the AKT/ERK1/2-GSK3β axis. Therefore, TIPE3 may represent a potential therapeutic target for NSCLC.
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Affiliation(s)
- Qiang Li
- Department of Oncology, the First Affiliated Hospital of Soochow University, Suzhou, China.,Department of Chemotherapy, Jiangxi Cancer Hospital of Nanchang University, Nanchang, China
| | - Dongmei Yu
- Department of Oncology, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Zhengyuan Yu
- Department of Oncology, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Qian Gao
- Department of Oncology, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Ruifang Chen
- Department of Oncology, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Lin Zhou
- Department of Oncology, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Rong Wang
- Department of Oncology, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Yan Li
- Department of Oncology, Suzhou Ninth People's Hospital, Suzhou, China
| | - Yulan Qian
- Department of Oncology, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Jun Zhao
- Department of Cardio-Thoracic Surgery, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Rafael Rosell
- Catalan Institute of Oncology, Badalona, Spain.,Cancer Biology and Precision Medicine Program of the Germans Trias i Pujol Research Institute, Badalona (IGTP), Barcelona, Spain
| | - Min Tao
- Department of Oncology, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Yufeng Xie
- Department of Oncology, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Chun Xu
- Department of Cardio-Thoracic Surgery, the First Affiliated Hospital of Soochow University, Suzhou, China
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11
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Ma N, Li X, Wei H, Zhang H, Zhang S. Circular RNA circNFATC3 acts as a miR-9-5p sponge to promote cervical cancer development by upregulating SDC2. Cell Oncol (Dordr) 2021; 44:93-107. [PMID: 32902825 DOI: 10.1007/s13402-020-00555-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/21/2020] [Indexed: 10/23/2022] Open
Abstract
PURPOSE Circular RNAs (circRNAs) constitute a class of regulatory RNAs that are thought to play important roles in tumor initiation and progression. Several studies have reported that circRNAs may be involved in various biological processes via networks of competing endogenous RNAs (ceRNAs). However, the regulatory roles and underlying mechanisms of circRNAs in cervical cancer (CC) still largely remain to be resolved. METHODS CircNFATC3 (hsa_circ_0005615) expression was assessed in CC cell lines (SiHa, H8) using circRNA microarray analysis, whereas qRT-PCR was used to detect circNFATC3 and miR-9-5p expression in primary human CC tissues and cell lines. The tumor promoting role of circNFATC3 was verified in CC cells using a series of functional assays, and interactions between circNFATC3, miR-9-5p and syndecan-2 (SDC2) were investigated using dual-luciferase reporter assays. SDC2 protein expression was detected using Western blotting and immunohistochemistry. The tumor promoting role of circNFATC3 was confirmed in vivo using a CC xenograft model. RESULTS We found that circNFATC3 expression was upregulated in primary CC tissues and positively correlated with CC tumor size and stromal invasion. In addition, we found that exogenous circNFATC3 overexpression enhanced the proliferation, migration and invasion of HeLa cells, while its knockdown reduced the malignancy of SiHa cells. We also found that circNFATC3 may act directly as a miR-9-5p sponge to regulate SDC2 expression and its downstream signaling pathways, thereby enhancing CC development. CONCLUSION Our data indicate that circNFATC3 sponges miR-9-5p to regulate SDC2 expression and, thereby, to promote CC tumor development.
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Affiliation(s)
- Ningye Ma
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang City, 110004, China
| | - Xinhui Li
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang City, 110004, China
| | - Heng Wei
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang City, 110004, China
| | - Huijie Zhang
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang City, 110004, China
| | - Shulan Zhang
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang City, 110004, China.
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12
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Cui L, Chen S, Wang D, Yang Q. LINC01116 promotes proliferation and migration of endometrial stromal cells by targeting FOXP1 via sponging miR-9-5p in endometriosis. J Cell Mol Med 2020; 25:2000-2012. [PMID: 33372387 PMCID: PMC7882988 DOI: 10.1111/jcmm.16039] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/08/2020] [Accepted: 10/10/2020] [Indexed: 02/06/2023] Open
Abstract
Endometriosis is a common multi-factorial gynaecological disease. Recent studies have revealed that long non-coding RNAs (lncRNAs) are involved in the pathogenesis of endometriosis. In the present study, the expression profiles of lncRNAs in 6 pairs of endometriosis ectopic endometrium (ecEM) and eutopic endometrium (euEM) tissues were analysed by RNA sequencing. From the profiles, LINC01116 was found to be up-regulated in ecEM tissues compared to euEM tissues and was verified by quantitative real-time PCR (qRT-PCR). Then, functional experiments demonstrated that LINC01116 promoted the proliferation and migration of ectopic primary endometrial stromal cells (ESCs), while miR-9-5p exerted the opposite effects. Dual-luciferase reporter assays verified that LINC01116 directly sponged miR-9-5p and relieved the suppression of its target, Forkhead box protein P1 (FOXP1). Rescue experiments further demonstrated that LINC01116 could promote proliferation and migration of ESCs by targeting FOXP1 via sponging miR-9-5p. Overall, our study illuminates that LINC01116 promotes the progression of endometriosis through the miR-9-5p/FOXP1 axis. This finding provides a novel therapeutic target for patients with endometriosis.
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Affiliation(s)
- Liangyi Cui
- Department of Obstetrics & Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Silei Chen
- Department of Obstetrics & Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Dandan Wang
- Department of Obstetrics & Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Qing Yang
- Department of Obstetrics & Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
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13
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Ying M, Feng H, Zhang X, Liu R, Ning H. MiR-9-5p Inhibits the Proliferation, Migration and Invasion of Choroidal Melanoma by Targeting BRAF. Technol Cancer Res Treat 2020; 19:1533033820956987. [PMID: 33138697 PMCID: PMC7645805 DOI: 10.1177/1533033820956987] [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] [Indexed: 12/20/2022] Open
Abstract
Objective: According to different reports, miR-9-5p either facilitates or suppresses the
occurrence of tumors. BRAF is a serine/threonine kinase involved in the MAPK
pathway and is a proto-oncogene promoting the progression of many tumors,
especially melanoma. The present study aimed to reveal the mechanism of
action of miR-9-5p and BRAF in choroidal melanoma (CM). Methods: RT-qPCR was used to detect the expression of miR-9-5p in CM cells after
transfection with miR-9-5p mimics and inhibitor. EdU assay and Transwell
assay, respectively, showed the proliferation, migration and invasion of CM
cells after transfection with miR-9-5p mimics and inhibitor. A
bioinformatics website was used for target prediction and the dual
luciferase reporter assay was used to verify the interaction between
miR-9-5p and BRAF. RT-qPCR and Western blot were performed to examine the
expression of BRAF mRNA and protein, respectively. The BRAF protein was
knocked down by siRNAs and then examined by Western blot. The effects of
BRAF in CM cells were investigated by EdU assay and Transwell assay.
Overexpressing BRAF and transfecting miR-9-5p mimics into choroidal melanoma
cells confirmed the interaction between miR-9-5p and BRAF. Results: miR-9-5p could bind to the BRAF mRNA 3’UTR and inhibit the transcription and
translation of BRAF, thereby suppressing the proliferation, migration and
invasion of CM cell lines. Moreover, silencing BRAF inhibited the
progression of CM cells. Conclusions: In conclusion, this study is the first to investigate the association among
BRAF, miR-9-5p and the progression of CM cells. In addition, the interaction
between BRAF and miR-9-5p was explored for the first time in CM. Thus, our
study suggests that miR-9-5p, BRAF and their interaction may act as
potential therapeutic targets for CM.
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Affiliation(s)
- Manman Ying
- Department of Ophthalmology, The First Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Hao Feng
- Department of Ophthalmology, The First Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Xiaonan Zhang
- Department of Ophthalmology, The First Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Ran Liu
- Department of Ophthalmology, The First Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Hong Ning
- Department of Ophthalmology, The First Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
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14
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Zhao X, Weng W, Long Y, Pan W, Li Z, Sun F. LINC00665/miR-9-5p/ATF1 is a novel axis involved in the progression of colorectal cancer. Hum Cell 2020; 33:1142-1154. [PMID: 32776307 DOI: 10.1007/s13577-020-00393-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 06/17/2020] [Indexed: 02/08/2023]
Abstract
Long noncoding RNAs (lncRNAs) are abnormally expressed in many malignant tumors and involved in regulating the malignant phenotypes of cancer cells. However, the role of LINC00665 in colorectal cancer (CRC) and its regulatory mechanism remain unclear. In this study, real-time polymerase chain reaction (RT-PCR) was used to detect the expressions of LINC00665, miR-9-5p and activating transcription factor 1 (ATF1) mRNA in CRC tissues. The expression of ATF1 in CRC tissues was also detected by immunohistochemistry and Western blot. CCK-8 and colony formation assays were employed to detect cell proliferation. Cell cycle and apoptosis were detected by flow cytometry analysis. Scratch healing assay and Transwell test were exploited to detect cell migration and invasion. The targeting relationships between LINC00665 and miR-9-5p, and miR-9-5p and ATF1 were validated by dual luciferase reporter assay. We found that LINC00665 was significantly overexpressed in CRC tissues, and it was also negatively correlated with the expression of miR-9-5p and positively associated with the expression of ATF1. Besides, LINC00665 promoted the proliferation, migration and invasion of CRC cells, and inhibited cell apoptosis by sponging miR-9-5p. ATF1 was proved to be the downstream target of miR-9-5p and was indirectly regulated by LINC00665. Collectively, it is concluded that LINC00665 contributes to the progression of CRC by regulating miR-9-5p/ATF1 axis.
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Affiliation(s)
- Xuhong Zhao
- Department of Clinical Laboratory, Yangpu Hospital, Tongji University School of Medicine, Shanghai, 200090, People's Republic of China
| | - Wenhao Weng
- Department of Clinical Laboratory, Yangpu Hospital, Tongji University School of Medicine, Shanghai, 200090, People's Republic of China
| | - Yin Long
- Department of Clinical Laboratory, Yangpu Hospital, Tongji University School of Medicine, Shanghai, 200090, People's Republic of China
| | - Weijie Pan
- Department of Clinical Laboratory, Yangpu Hospital, Tongji University School of Medicine, Shanghai, 200090, People's Republic of China
| | - Zhi Li
- Department of Clinical Laboratory, Yangpu Hospital, Tongji University School of Medicine, Shanghai, 200090, People's Republic of China.
| | - Fenyong Sun
- Department of Clinical Laboratory, Shanghai 10th People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai, 200072, People's Republic of China.
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15
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Jin L, Zhang N, Zhang Q, Ding G, Yang Z, Zhang Z. Serum microRNAs as potential new biomarkers for cisplatin resistance in gastric cancer patients. PeerJ 2020; 8:e8943. [PMID: 32328349 PMCID: PMC7164432 DOI: 10.7717/peerj.8943] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Accepted: 03/18/2020] [Indexed: 12/19/2022] Open
Abstract
Background microRNAs (miRNAs) have been studied for their role in the early detection of several diseases. However, there is no current information on the systematic screening of serum-derived cisplatin resistance biomarkers in gastric cancer (GC). Methods Cisplatin-resistant GC cell lines were screened for dysregulated miRNAs using small RNA sequencing (sRNA-seq) and miRNAs were functionally annotated using bioinformatics analyses. Real-time quantitative polymerase chain reaction (RT-qPCR) was used to validate the miRNA-relative transcription levels in GC cells and in 74 GC patients. We analyzed the associations between the clinical characteristics of the patients and their miRNA expression. Receiver operating characteristic (ROC) analysis was used to evaluate the diagnostic value for serum-derived cisplatin resistance. Results Seven miRNAs were identified from 35 differentially expressed miRNAs between the MGC803/DDP and MGC803 cells in a public database. We found four miRNA candidates (miR-9-3p, miR-9-5p, miR-146a-5p, and miR-433-3p) that were significantly associated with chemotherapy responses in GC cells and patients. miR-9-5p (AUC = 0.856, 95% CI [0.773–0.939], p < 0.0001) and a combined group (miR-9-5p + miR-9-3p + miR-433-3p) (AUC = 0.915, 95% CI [0.856–0.975], P < 0.0001) distinguished chemoresistant GC patients from chemosensitive GC patients. Conclusions Our study reveals the potential therapeutic use of two serum-based biomarkers, miR-9-5p and a combined group (miR-9-5p + miR-9-3p + miR-433-3p), as indicators for the successful use of cisplatin in GC patients.
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Affiliation(s)
- Lei Jin
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, China.,National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Nan Zhang
- National Clinical Research Center for Digestive Diseases, Beijing, China.,Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Qian Zhang
- National Clinical Research Center for Digestive Diseases, Beijing, China.,Clinical Epidemiology and EBM Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Guoqian Ding
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, China.,National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Zhenghan Yang
- National Clinical Research Center for Digestive Diseases, Beijing, China.,Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Zhongtao Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, China.,National Clinical Research Center for Digestive Diseases, Beijing, China
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16
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Recurrence-Associated Multi-RNA Signature to Predict Disease-Free Survival for Ovarian Cancer Patients. BIOMED RESEARCH INTERNATIONAL 2020; 2020:1618527. [PMID: 32149080 PMCID: PMC7044477 DOI: 10.1155/2020/1618527] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 12/12/2019] [Accepted: 12/23/2019] [Indexed: 02/07/2023]
Abstract
Ovarian cancer (OvCa) is an intractable gynecological malignancy due to the high recurrence rate. Several molecular biomarkers have been previously screened for early identifying patients with a high recurrence risk and poor prognosis. However, all the known studies focused on a single type of RNAs, not integrating various types. This study was to construct a new multi-RNA-based model to predict the recurrence and prognosis for OvCa patients by using the messenger RNA (mRNA, including long noncoding RNA (lncRNA)) and microRNA (miRNA) sequencing data of The Cancer Genome Atlas database. After univariate Cox regression and least absolute shrinkage and selection operator analyses, a multi-RNA-based signature (2 miRNAs: hsa-miR-508, hsa-miR-506; 1 lncRNA: TM4SF1-AS1; 11 mRNAs: MAGI3, SLAMF7, GLI2, PDK1, ARID3A, PLEKHG4B, TNFAIP8L3, C1QTNF3, NDUFAF1, CH25H, TMEM129) was generated and used to establish a risk score model. The high- and low-risk patients classified by the median risk score exhibited significantly different recurrence risks (89% versus 61%, p < 0.001) and survival time (the area under the receiver operating characteristic curve (AUC) = 0.901 for 5-year disease-free survival (DFS)). This risk model was independent of other clinical features and superior to pathologic staging for DFS prediction (AUC, 0.906 versus 0.524; C-index, 0.633 versus 0.510). Furthermore, some new interaction axes were revealed to explain the possible functions of these RNAs (competing endogenous RNA: TM4SF1-AS1-miR-186-STEAP2, LINC00536-miR-508-STEAP2, LINC00475-miR-506-TMEM129; coexpression: LINC00598-PLEKHG4B). In conclusion, this multi-RNA-based risk model may be clinically useful to stratify OvCa patients with different recurrence risks and survival outcomes and included RNAs may be potential therapeutic targets.
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17
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Li F, Dai B, Ni X. Long non-coding RNA cancer susceptibility candidate 2 (CASC2) alleviates the high glucose-induced injury of CIHP-1 cells via regulating miR-9-5p/PPARγ axis in diabetes nephropathy. Diabetol Metab Syndr 2020; 12:68. [PMID: 32774472 PMCID: PMC7409641 DOI: 10.1186/s13098-020-00574-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 07/27/2020] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND High glucose (HG) induced podocytes injury plays an important role in diabetes nephropathy (DN) development. Long noncoding RNA cancer susceptibility candidate 2 (CASC2) was found to be decreased in serum of DN patients. We aimed to explore the function and possible mechanism of CASC2 in HG induced podocytes injury. METHODS Under normal glucose (NG), HG and mannitol stimulated podocyte conditions, the levels of CASC2, microRNA-9-5p (miR-9-5p) and peroxisome proliferator-activated receptor gamma (PPARγ) were examined by quantitative real-time polymerase chain reaction (qRT-PCR). Podocyte injury was evaluated by measuring cell viability and apoptosis of CIHP-1 cells were checked by cell counting kit-8 (CCK-8) assay and flow cytometry, respectively. Western blot was used to detect all protein levels. Dual-luciferase reporter, RNA immunoprecipitation (RIP) and RNA pull-down assays were performed to confirm the relationship between CASC2 and miR-9-5p. RESULTS HG stimulation inhibited the expression levels of CASC2 and PPARγ, but promoted the expression of miR-9-5p. HG could restrain cell viability, autophagy and facilitate apoptosis in CIHP-1 cells, while CASC2 overexpression could reverse HG-induced podocytes injury. Furthermore, CASC2 could be used as a ceRNA to adsorb miR-9-5p, and miR-9-5p mimic overturned the effects of CASC2 on cell viability, autophagy and apoptosis in HG-stimulated podocytes. Additionally, PPARγ was a target gene of miR-9-5p, and CASC2 could weaken the HG-induced podocytes injury by up-regulating PPARγ. CONCLUSION CASC2 increased cell viability, autophagy and inhibited cell apoptosis by regulating miR-9-5p/PPARγ axis, thus reducing the HG-induced podocytes injury.
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Affiliation(s)
- Feng Li
- Department of Nephrology, Heze Mudan People’s Hospital, Heze, Shandong China
| | - Bo Dai
- Department of Nephrology, Liaocheng People’s Hospital, Liaocheng, Shandong China
| | - Xiquan Ni
- Department of Nephrology, Tai’an Campus of the 960th Hospital of the Chinese People’s Liberation Army, No.217 Huanshan Road, Taishan District, Tai’an, 271000 Shandong China
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18
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Dong Y, Li X, Lin Z, Zou W, Liu Y, Qian H, Jia J. HOXC-AS1-MYC regulatory loop contributes to the growth and metastasis in gastric cancer. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2019; 38:502. [PMID: 31870402 PMCID: PMC6929373 DOI: 10.1186/s13046-019-1482-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 11/15/2019] [Indexed: 01/01/2023]
Abstract
BACKGROUND Gastric cancer (GC) is one of the most prevalent and deadly malignancies worldwide. Accumulating reports have indicated the participation of long non-coding RNAs (lncRNAs) in the onset and progression of GC. METHODS GSE109476 data was utilized to screen out lncRNAs dysregulated in GC. Gene expressions were determined by qRT-PCR and western blot. Both in vitro and in vivo experiments were carried out to assess the function of HOXC-AS1 in GC. The association between genes was verified via RIP, ChIP, CoIP, RNA pull down and luciferase reporter assays, as appropriate. RESULTS HOXC-AS1 was discovered to be upregulated in GC and located both in cytoplasm and in nucleus in GC cells. Functionally, inhibition of HOXC-AS1 restrained GC cell growth and metastasis both in vitro and in vivo. Moreover, HOXC-AS1 was proved to be trans-activated by c-MYC in GC. In return, HOXC-AS1 positively regulated MYC expression in GC through targeting miR-590-3p/MYC axis in cytoplasm and modulating BRG1/β-catenin complex-activated MYC transcription in nucleus. Furthermore, the rescue assays verified that MYC mediated HOXC-AS1-affected GC progression. CONCLUSION Our research illustrated a feedback loop of HOXC-AS1-MYC in aggravating GC cell growth and metastasis, highlighting HOXC-AS1 as a promising target for GC diagnosis and treatment.
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Affiliation(s)
- Yangyang Dong
- 2nd Department of Gastrointestinal Surgery, Quanzhou First Hospital Affiliated to Fujian Medical University, 248-252 East Street, Licheng District, Quanzhou City, 362000, Fujian Province, China.
| | - Xinyu Li
- 2nd Department of Gastrointestinal Surgery, Quanzhou First Hospital Affiliated to Fujian Medical University, 248-252 East Street, Licheng District, Quanzhou City, 362000, Fujian Province, China
| | - Zhibin Lin
- 2nd Department of Gastrointestinal Surgery, Quanzhou First Hospital Affiliated to Fujian Medical University, 248-252 East Street, Licheng District, Quanzhou City, 362000, Fujian Province, China
| | - Wenbing Zou
- 2nd Department of Gastrointestinal Surgery, Quanzhou First Hospital Affiliated to Fujian Medical University, 248-252 East Street, Licheng District, Quanzhou City, 362000, Fujian Province, China
| | - Yan Liu
- 2nd Department of Gastrointestinal Surgery, Quanzhou First Hospital Affiliated to Fujian Medical University, 248-252 East Street, Licheng District, Quanzhou City, 362000, Fujian Province, China
| | - Huiyang Qian
- 2nd Department of Gastrointestinal Surgery, Quanzhou First Hospital Affiliated to Fujian Medical University, 248-252 East Street, Licheng District, Quanzhou City, 362000, Fujian Province, China
| | - Jing Jia
- 2nd Department of Gastrointestinal Surgery, Quanzhou First Hospital Affiliated to Fujian Medical University, 248-252 East Street, Licheng District, Quanzhou City, 362000, Fujian Province, China
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