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Chen Y, Ning J, Shu L, Wen L, Yan B, Wang Z, Hu J, Zhou X, Tao Y, Xia X, Huang J. CPLX2 is a novel tumor suppressor and improves the prognosis in glioma. J Neurooncol 2024; 167:63-74. [PMID: 38427133 DOI: 10.1007/s11060-023-04548-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 12/16/2023] [Indexed: 03/02/2024]
Abstract
BACKGROUND Glioma is a type of malignant cancer that affect the central nervous system. New predictive biomarkers have been investigated in recent years, but the clinical prognosis for glioma remains poor. The function of CPLX2 in glioma and the probable molecular mechanism of tumor suppression were the focus of this investigation. METHODS The glioma transcriptome profile was downloaded from The Cancer Genome Atlas (TCGA) and Chinese Glioma Genome Atlas (CGGA) databases for analysis of CPLX2 expression in glioma. RT-qPCR was performed to detect the expression of CPLX2 in 68 glioma subjects who have been followed up. Kaplan-Meier survival analyses were conducted to assess the effect of CPLX2 on the prognosis of glioma patients. The knockdown and overexpressed cell lines of CPLX2 were constructed to investigate the impact of CPLX2 on glioma. The cell growth, colony formation, and tumor formation in xenograft were performed. RESULTS The expression of CPLX2 was downregulated in glioma and was negatively correlated with the grade of glioma. The higher expression of CPLX2 predicted a longer survival, as indicated by the analysis of Kaplan-Meier survival curves. Overexpressed CPLX2 impaired tumorigenesis in glioma progression both in vivo and in vitro. Knocking down CPLX2 promoted the proliferation of glioma cells. The analysis of GSEA and co-expression analysis revealed that CPLX2 may affect the malignancy of glioma by regulating the hypoxia and inflammation pathways. CONCLUSIONS Our data indicated that CPLX2 functions as a tumor suppressor and could be used as a potential prognostic marker in glioma.
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Affiliation(s)
- Yuanbing Chen
- Department of Neurosurgery, Third Xiangya Hospital, Central South University, 410008, Changsha, Hunan, China
| | - Jieling Ning
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, 410008, Changsha, Hunan, China
- Department of Dermatology, Xiangya Hospital, Central South University, 410008, Changsha, Hunan, China
| | - Long Shu
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Department of Pathology, Xiangya Hospital, Central South University, 410078, Changsha, Hunan, China
- NHC Key Laboratory of Carcinogenesis (Central South University), Cancer Research Institute and School of Basic Medicine, Central South University, 410078, Changsha, Hunan, China
| | - Lingzhi Wen
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Department of Pathology, Xiangya Hospital, Central South University, 410078, Changsha, Hunan, China
- NHC Key Laboratory of Carcinogenesis (Central South University), Cancer Research Institute and School of Basic Medicine, Central South University, 410078, Changsha, Hunan, China
| | - Bokang Yan
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Department of Pathology, Xiangya Hospital, Central South University, 410078, Changsha, Hunan, China
- NHC Key Laboratory of Carcinogenesis (Central South University), Cancer Research Institute and School of Basic Medicine, Central South University, 410078, Changsha, Hunan, China
| | - Zuli Wang
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Department of Pathology, Xiangya Hospital, Central South University, 410078, Changsha, Hunan, China
- NHC Key Laboratory of Carcinogenesis (Central South University), Cancer Research Institute and School of Basic Medicine, Central South University, 410078, Changsha, Hunan, China
| | - Junhong Hu
- Department of Neurosurgery, Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China
| | - Xiaokun Zhou
- Department of Neurosurgery, Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China
| | - Yongguang Tao
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Department of Pathology, Xiangya Hospital, Central South University, 410078, Changsha, Hunan, China
- NHC Key Laboratory of Carcinogenesis (Central South University), Cancer Research Institute and School of Basic Medicine, Central South University, 410078, Changsha, Hunan, China
| | - Xuewei Xia
- Department of Neurosurgery, Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China.
| | - Jun Huang
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, 410008, Changsha, Hunan, China.
- Department of Neurosurgery, Xiangya Hospital, Central South University, 410008, Changsha, Hunan, China.
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Ghafouri-Fard S, Harsij A, Hussen BM, Abdullah SR, Baniahmad A, Taheri M, Sharifi G. A review on the role of long non-coding RNA prostate androgen-regulated transcript 1 (PART1) in the etiology of different disorders. Front Cell Dev Biol 2023; 11:1124615. [PMID: 36875771 PMCID: PMC9974648 DOI: 10.3389/fcell.2023.1124615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 02/06/2023] [Indexed: 02/17/2023] Open
Abstract
LncRNA prostate androgen-regulated transcript 1 (PART1) is an important lncRNA in the carcinogenesis whose role has been firstly unraveled in prostate cancer. Expression of this lncRNA is activated by androgen in prostate cancer cells. In addition, this lncRNA has a role in the pathogenesis intervertebral disc degeneration, myocardial ischemia-reperfusion injury, osteoarthritis, osteoporosis and Parkinson's disease. Diagnostic role of PART1 has been assessed in some types of cancers. Moreover, dysregulation of PART1 expression is regarded as a prognostic factor in a variety of cancers. The current review provides a concise but comprehensive summary of the role of PART1 in different cancers and non-malignant disorders.
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Affiliation(s)
- Soudeh Ghafouri-Fard
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Atefeh Harsij
- Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Bashdar Mahmud Hussen
- Department of Pharmacognosy, College of Pharmacy, Hawler Medical University, Erbil, Kurdistan Region, Iraq
| | - Snur Rasool Abdullah
- Medical Laboratory Science, Lebanese French University, Erbil, Kurdistan Region, Iraq
| | - Aria Baniahmad
- Institute of Human Genetics, Jena University Hospital, Jena, Germany
| | - Mohammad Taheri
- Urology and Nephrology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Skull Base Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Guive Sharifi
- Skull Base Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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3
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Ran R, Gong CY, Wang ZQ, Zhou WM, Zhang SB, Shi YQ, Ma CW, Zhang HH. Long non‑coding RNA PART1: dual role in cancer. Hum Cell 2022; 35:1364-1374. [PMID: 35864416 DOI: 10.1007/s13577-022-00752-y] [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] [Received: 03/29/2022] [Accepted: 07/14/2022] [Indexed: 12/24/2022]
Abstract
Increasing evidence has shown that long non-coding RNAs (lncRNAs), which are non-coding endogenous single-stranded RNAs, play an essential role in various physiological and pathological processes through transcriptional interference, post-transcriptional regulation, and epigenetic modification. Moreover, lncRNAs, as oncogenes or tumor suppressor genes, play an important role in the occurrence and development of human cancers. Prostate androgen-regulated transcript 1 (PART1) was initially identified as a carcinogenic lncRNA in prostate adenomas. The upregulated expression of PART1 plays a tumor-promoting role in liver, prostate, lung cancers, and other tumors. In contrast, the expression of PART1 is downregulated in esophageal squamous cell carcinoma, glioma, and other tumors, which may inhibit the tumor. PART1 plays a dual role in cancer and regulates cell proliferation, apoptosis, invasion, and metastasis through a variety of potential mechanisms. These findings suggest that PART1 is a promising tumor biomarker and therapeutic target. This article reviews the biological functions, related mechanisms, and potential clinical significance of PART1 in a variety of human cancers.
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Affiliation(s)
- Rui Ran
- Lanzhou University Second Hospital, 82 Cuiying Men, Lanzhou, 730000, People's Republic of China.,Orthopaedics Key Laboratory of Gansu Province, Lanzhou, 730000, People's Republic of China
| | - Chao-Yang Gong
- Lanzhou University Second Hospital, 82 Cuiying Men, Lanzhou, 730000, People's Republic of China.,Orthopaedics Key Laboratory of Gansu Province, Lanzhou, 730000, People's Republic of China
| | - Zhi-Qiang Wang
- Lanzhou University Second Hospital, 82 Cuiying Men, Lanzhou, 730000, People's Republic of China.,Orthopaedics Key Laboratory of Gansu Province, Lanzhou, 730000, People's Republic of China
| | - Wen-Ming Zhou
- Lanzhou University Second Hospital, 82 Cuiying Men, Lanzhou, 730000, People's Republic of China.,Orthopaedics Key Laboratory of Gansu Province, Lanzhou, 730000, People's Republic of China
| | - Shun-Bai Zhang
- Lanzhou University Second Hospital, 82 Cuiying Men, Lanzhou, 730000, People's Republic of China.,Orthopaedics Key Laboratory of Gansu Province, Lanzhou, 730000, People's Republic of China
| | - Yong-Qiang Shi
- Lanzhou University Second Hospital, 82 Cuiying Men, Lanzhou, 730000, People's Republic of China.,Orthopaedics Key Laboratory of Gansu Province, Lanzhou, 730000, People's Republic of China
| | - Chun-Wei Ma
- Lanzhou University Second Hospital, 82 Cuiying Men, Lanzhou, 730000, People's Republic of China.,Orthopaedics Key Laboratory of Gansu Province, Lanzhou, 730000, People's Republic of China
| | - Hai-Hong Zhang
- Lanzhou University Second Hospital, 82 Cuiying Men, Lanzhou, 730000, People's Republic of China.
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You Y, Liu T, Shen J. Research progress in myosin light chain 9 in malignant tumors. ZHONG NAN DA XUE XUE BAO. YI XUE BAN = JOURNAL OF CENTRAL SOUTH UNIVERSITY. MEDICAL SCIENCES 2021; 46:1153-1158. [PMID: 34911847 PMCID: PMC10930228 DOI: 10.11817/j.issn.1672-7347.2021.200814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Indexed: 11/03/2022]
Abstract
Myosin light chain 9 (MYL9) is a regulatory light chain of myosin, which plays an important role in various biological processes including cell contraction, proliferation and invasion. MYL9 expresses abnormally in several malignancies including lung cancer, breast cancer, prostate cancer, malignant melanoma and others, which is closely related to the poor prognosis, but the clinical significance for its expression varies with different types of cancer tissues. Further elucidating the molecular mechanism of MYL9 in various types of malignant tumor metastasis is of great significance for cancer prevention and treatment. At the same time, as a molecular marker and potential target, MYL9 may have great clinical value in the early diagnosis, prognosis prediction, and targeted treatment of malignant tumors.
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Affiliation(s)
- Yimeng You
- Fujian Institute of Hematology; Fujian Provincial Key Laboratory on Hematology; Department of Hematology, Union Hospital Affiliated to Fujian Medical University, Fuzhou 350001, China.
| | - Tingbo Liu
- Fujian Institute of Hematology; Fujian Provincial Key Laboratory on Hematology; Department of Hematology, Union Hospital Affiliated to Fujian Medical University, Fuzhou 350001, China
| | - Jianzhen Shen
- Fujian Institute of Hematology; Fujian Provincial Key Laboratory on Hematology; Department of Hematology, Union Hospital Affiliated to Fujian Medical University, Fuzhou 350001, China.
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5
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Deng Y, Liu L, Feng W, Lin Z, Ning Y, Luo X. High Expression of MYL9 Indicates Poor Clinical Prognosis of Epithelial Ovarian Cancer. Recent Pat Anticancer Drug Discov 2021; 16:533-539. [PMID: 34551701 DOI: 10.2174/1574891x16666210706153740] [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: 09/03/2020] [Revised: 02/06/2021] [Accepted: 02/27/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND The prognosis of Epithelial Ovarian Cancer (EOC) is poor, but the prognostic biomarkers are neither sensitive nor specific. Therefore, it is very important to search novel prognostic biomarkers for EOC. OBJECTIVES The present study aimed to investigate Myosin Light Chain 9(MYL9) expression in Epithelial Ovarian Cancer (EOC) tissues (including paraffin-embedded and fresh tissue samples) and its relationship with clinicopathological characteristics, as well as its potential prognostic value in patients with EOC. METHODS Between March 2009 and December 2018, all of 184 paraffin-embedded cancer tissues from patients with EOC and 41 paratumor tissues, pathologically confirmed at the Memorial Hospital of Sun Yat-sen University and Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, were collected for the present study and were assessed for MYL9 protein expression patterns using Immunohistochemistry (IHC). Furthermore, from August 2013 to November 2019, 16 fresh EOC tissues and their paired paratumor tissues, pathologically confirmed at the Integrated Hospital of Traditional Chinese Medicine, Southern Medical University were analyzed using Reverse-Transcription Quantitative PCR (RT-qPCR) to detect MYL9 mRNA expression levels. RESULTS The results showed that MYL9 expression was higher in cancer tissues compared with that in paratumor tissues, and MYL9 overexpression was associated with shorter Recurrence Free Survival (RFS) and Overall Survival (OS) of EOC patients. Furthermore, multivariate Cox model analysis indicated that MYL9 overexpression was an independent poor survival prediction in patients with EOC. CONCLUSION MYL9 is upregulated in EOC and may serve as a useful patent of prognostic biomarker in EOC, and it may demonstrate an important value for the clinical treatment and supervision of patients with EOC.
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Affiliation(s)
- Yuao Deng
- Department of Gynecology and Obstetrics, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, 510630, China
| | - Longyang Liu
- Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, 13 Shiliugang ST, Guangzhou, 510315, China
| | - Weifeng Feng
- The First Affiliated Hospital of Jinan University, Guangzhou, 510632, China
| | - Zhongqiu Lin
- Department of Gynecology Oncology, The Memorial Hospital of Sun Yat-sen University, Guangzhou, 510120, China
| | - Yingxia Ning
- Department of Gynaecology and Obstetrics, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China
| | - Xin Luo
- Department of Gynecology and Obstetrics, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, 510630, China
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Chen J, Meng E, Lin Y, Shen Y, Hu C, Zhou G, Yuan C. The Role of Tumor-related LncRNA PART1 in cancer. Curr Pharm Des 2021; 27:4152-4159. [PMID: 34225608 DOI: 10.2174/1381612827666210705161955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 06/01/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND As we all know, long non-coding RNA (lncRNA) affects tumor progression, which has caused a great upsurge in recent years. It can also affect the growth, migration, and invasion of tumors. When we refer to the abnormal expression of lncRNA, we will find it associated with malignant tumors. In addition, lncRNA has been proved to be a key targeted gene for the treatment of some diseases. PART1, a member of lncRNA, has been reported as a regulator in the process of tumor occurrence and development. This study aims to reveal the biological functions, specific mechanisms, and clinical significance of PART1 in various tumor cells. METHODS Through the careful search of PUBMED, the mechanisms of the effect of PART1 on tumorigenesis and development are summarized. RESULTS On the one hand, the up-regulated expression of PART1 plays a tumor-promoting role in tumors, including lung cancer, prostate cancer, bladder cancer and so on. On the other hand, PART1 is down-regulated in gastric cancer, glioma and other tumors to play a tumor inhibitory role. In addition, PART1 regulates tumor growth mainly by targeting microRNA such as miR-635, directly regulating the expression of proteins such as FUS/EZH2, affecting signal pathways such as the Toll-like receptor pathway, or regulating immune cells. CONCLUSION PART1 is closely related to tumors by regulating a variety of molecular mechanisms. In addition, PART1 can be used as a clinical marker for the early diagnosis of tumors and plays an important role in tumor-targeted therapy.
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Affiliation(s)
- Jinlan Chen
- College of Medical Science, China Three Gorges University, Yichang 443002, China
| | - Enqing Meng
- College of Medical Science, China Three Gorges University, Yichang 443002, China
| | - Yexiang Lin
- College of Medical Science, China Three Gorges University, Yichang 443002, China
| | - Yujie Shen
- College of Medical Science, China Three Gorges University, Yichang 443002, China
| | - Chengyu Hu
- College of Medical Science, China Three Gorges University, Yichang 443002, China
| | - Gang Zhou
- College of Traditional Chinese Medicine, China Three Gorges University, Yichang, China
| | - Chengfu Yuan
- College of Medical Science, China Three Gorges University, Yichang 443002, China
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Cruickshank BM, Wasson MCD, Brown JM, Fernando W, Venkatesh J, Walker OL, Morales-Quintanilla F, Dahn ML, Vidovic D, Dean CA, VanIderstine C, Dellaire G, Marcato P. LncRNA PART1 Promotes Proliferation and Migration, Is Associated with Cancer Stem Cells, and Alters the miRNA Landscape in Triple-Negative Breast Cancer. Cancers (Basel) 2021; 13:cancers13112644. [PMID: 34072264 PMCID: PMC8198907 DOI: 10.3390/cancers13112644] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 05/22/2021] [Accepted: 05/25/2021] [Indexed: 01/03/2023] Open
Abstract
Triple-negative breast cancers (TNBCs) are aggressive, lack targeted therapies and are enriched in cancer stem cells (CSCs). Novel therapies which target CSCs within these tumors would likely lead to improved outcomes for TNBC patients. Long non-coding RNAs (lncRNAs) are potential therapeutic targets for TNBC and CSCs. We demonstrate that lncRNA prostate androgen regulated transcript 1 (PART1) is enriched in TNBCs and in Aldefluorhigh CSCs, and is associated with worse outcomes among basal-like breast cancer patients. Although PART1 is androgen inducible in breast cancer cells, analysis of patient tumors indicates its androgen regulation has minimal clinical impact. Knockdown of PART1 in TNBC cell lines and a patient-derived xenograft decreased cell proliferation, migration, tumor growth, and mammosphere formation potential. Transcriptome analyses revealed that the lncRNA affects expression of hundreds of genes (e.g., myosin-Va, MYO5A; zinc fingers and homeoboxes protein 2, ZHX2). MiRNA 4.0 GeneChip and TaqMan assays identified multiple miRNAs that are regulated by cytoplasmic PART1, including miR-190a-3p, miR-937-5p, miR-22-5p, miR-30b-3p, and miR-6870-5p. We confirmed the novel interaction between PART1 and miR-937-5p. In general, miRNAs altered by PART1 were less abundant than PART1, potentially leading to cell line-specific effects in terms miRNA-PART1 interactions and gene regulation. Together, the altered miRNA landscape induced by PART1 explains most of the protein-coding gene regulation changes (e.g., MYO5A) induced by PART1 in TNBC.
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Affiliation(s)
- Brianne M. Cruickshank
- Department of Pathology, Faculty of Medicine, Dalhousie University, Halifax, NS B3H 4R2, Canada; (B.M.C.); (M.-C.D.W.); (J.M.B.); (W.F.); (J.V.); (O.L.W.); (M.L.D.); (D.V.); (C.A.D.); (C.V.); (G.D.)
| | - Marie-Claire D. Wasson
- Department of Pathology, Faculty of Medicine, Dalhousie University, Halifax, NS B3H 4R2, Canada; (B.M.C.); (M.-C.D.W.); (J.M.B.); (W.F.); (J.V.); (O.L.W.); (M.L.D.); (D.V.); (C.A.D.); (C.V.); (G.D.)
| | - Justin M. Brown
- Department of Pathology, Faculty of Medicine, Dalhousie University, Halifax, NS B3H 4R2, Canada; (B.M.C.); (M.-C.D.W.); (J.M.B.); (W.F.); (J.V.); (O.L.W.); (M.L.D.); (D.V.); (C.A.D.); (C.V.); (G.D.)
| | - Wasundara Fernando
- Department of Pathology, Faculty of Medicine, Dalhousie University, Halifax, NS B3H 4R2, Canada; (B.M.C.); (M.-C.D.W.); (J.M.B.); (W.F.); (J.V.); (O.L.W.); (M.L.D.); (D.V.); (C.A.D.); (C.V.); (G.D.)
| | - Jaganathan Venkatesh
- Department of Pathology, Faculty of Medicine, Dalhousie University, Halifax, NS B3H 4R2, Canada; (B.M.C.); (M.-C.D.W.); (J.M.B.); (W.F.); (J.V.); (O.L.W.); (M.L.D.); (D.V.); (C.A.D.); (C.V.); (G.D.)
| | - Olivia L. Walker
- Department of Pathology, Faculty of Medicine, Dalhousie University, Halifax, NS B3H 4R2, Canada; (B.M.C.); (M.-C.D.W.); (J.M.B.); (W.F.); (J.V.); (O.L.W.); (M.L.D.); (D.V.); (C.A.D.); (C.V.); (G.D.)
| | | | - Margaret L. Dahn
- Department of Pathology, Faculty of Medicine, Dalhousie University, Halifax, NS B3H 4R2, Canada; (B.M.C.); (M.-C.D.W.); (J.M.B.); (W.F.); (J.V.); (O.L.W.); (M.L.D.); (D.V.); (C.A.D.); (C.V.); (G.D.)
| | - Dejan Vidovic
- Department of Pathology, Faculty of Medicine, Dalhousie University, Halifax, NS B3H 4R2, Canada; (B.M.C.); (M.-C.D.W.); (J.M.B.); (W.F.); (J.V.); (O.L.W.); (M.L.D.); (D.V.); (C.A.D.); (C.V.); (G.D.)
| | - Cheryl A. Dean
- Department of Pathology, Faculty of Medicine, Dalhousie University, Halifax, NS B3H 4R2, Canada; (B.M.C.); (M.-C.D.W.); (J.M.B.); (W.F.); (J.V.); (O.L.W.); (M.L.D.); (D.V.); (C.A.D.); (C.V.); (G.D.)
| | - Carter VanIderstine
- Department of Pathology, Faculty of Medicine, Dalhousie University, Halifax, NS B3H 4R2, Canada; (B.M.C.); (M.-C.D.W.); (J.M.B.); (W.F.); (J.V.); (O.L.W.); (M.L.D.); (D.V.); (C.A.D.); (C.V.); (G.D.)
| | - Graham Dellaire
- Department of Pathology, Faculty of Medicine, Dalhousie University, Halifax, NS B3H 4R2, Canada; (B.M.C.); (M.-C.D.W.); (J.M.B.); (W.F.); (J.V.); (O.L.W.); (M.L.D.); (D.V.); (C.A.D.); (C.V.); (G.D.)
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Paola Marcato
- Department of Pathology, Faculty of Medicine, Dalhousie University, Halifax, NS B3H 4R2, Canada; (B.M.C.); (M.-C.D.W.); (J.M.B.); (W.F.); (J.V.); (O.L.W.); (M.L.D.); (D.V.); (C.A.D.); (C.V.); (G.D.)
- Department of Microbiology and Immunology, Faculty of Medicine, Dalhousie University, Halifax, NS B3H 4R2, Canada
- Correspondence: ; Tel.: +1-(902)-494-4239
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8
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Cheng H, Sharen G, Wang Z, Zhou J. LncRNA UCA1 Enhances Cisplatin Resistance by Regulating CYP1B1-mediated Apoptosis via miR-513a-3p in Human Gastric Cancer. Cancer Manag Res 2021; 13:367-377. [PMID: 33469378 PMCID: PMC7813468 DOI: 10.2147/cmar.s277399] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 11/11/2020] [Indexed: 12/18/2022] Open
Abstract
Background Chemoresistance contributes to treatment failure of gastric cancer (GC) patients but the molecular mechanism of chemoresistance in GC is still unclear. Long-chain noncoding RNA (lncRNA) urothelial cancer associated 1 (UCA1) is associated with resistance to chemotherapy drugs. Methods We detected the expression of UCA1 in 53 pairs of GC tumor tissue and adjacent normal tissue, human normal gastric mucosa cells (GES-1) and human GC cells (HGC-27, SNU-5, AGS, SGC-7901, and NCI-N87) using RT-qPCR. Small RNA interference technology was used to knock down the expression of UCA1 in gastric cancer cells. CCK8 solution was used to detect cell viability. Flow cytometry was used to detect apoptosis, and Western blotting was used to detect protein expression. Results UCA1 was highly expressed in GC tissues and cells, and knockdown of UCA1 increased chemosensitivity to cisplatin by inducing cell apoptosis. Furthermore, UCA1 promoted CYP1B1 expression by binding to miR-513a-3p in human GC cells in vitro, and UCA1/CYP1B1 expression was negatively related to miR-513a-3p expression, while UCA1 expression was positively related to CYP1B1 expression in human GC tissues. Moreover, overexpression of miR-513a-3p or knockdown of CYP1B1 increased chemosensitivity to cisplatin, and knockdown of miR-513a-3p or overexpression of CYP1B1 decreased chemosensitivity to cisplatin by inducing cell apoptosis in human GC cells. Importantly, overexpression of CYP1B1 reduced chemosensitivity to cisplatin which increased by knockdown of UCA1, and knockdown of CYP1B1 increased chemosensitivity to cisplatin which decreased by knockdown of miR-513a-3p in human GC cells. Conclusion The lncRNA UCA1/miR-513a-3p/CYP1B1 axis regulates cisplatin resistance in human GC cells; hence, it is a potential target for treating chemoresistance in GC.
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Affiliation(s)
- Haidong Cheng
- Department of Gastroenterology, Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010059, People's Republic of China
| | - Gaowa Sharen
- Department of Pathological Anatomy, College of Basic Medicine of Inner Mongolia Medical University, Hohhot 010059, People's Republic of China
| | - Zhaoyang Wang
- Department of Gastroenterology, Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010059, People's Republic of China
| | - Jing Zhou
- Department of Pharmacology, College of Basic Medicine of Inner Mongolia Medical University, Hohhot 010059, People's Republic of China
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9
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Comprehensive Analysis of a ceRNA Network Identifies lncR-C3orf35 Associated with Poor Prognosis in Osteosarcoma. BIOMED RESEARCH INTERNATIONAL 2020; 2020:3178037. [PMID: 33015161 PMCID: PMC7525295 DOI: 10.1155/2020/3178037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 08/27/2020] [Accepted: 09/11/2020] [Indexed: 12/15/2022]
Abstract
Osteosarcoma is a highly malignant bone cancer which primarily occurs in children and young adults. Increasing evidence indicates that long noncoding RNAs (lncRNAs), which function as competing endogenous RNAs (ceRNAs) that sponge microRNAs (miRNAs) and messenger RNAs (mRNAs), play a pivotal role in the pathogenesis and progression of cancers. The regulatory mechanisms of lncRNA-mediated ceRNAs in osteosarcoma have not been fully elucidated. In this study, we identified differentially expressed lncRNAs, miRNAs, and mRNAs in osteosarcoma based on RNA microarray profiles in the Gene Expression Omnibus (GEO) database. A ceRNA network was constructed utilizing bioinformatic tools. Kaplan-Meier survival analysis showed that lncR-C3orf35 and HMGB1 were associated with poor prognosis of osteosarcoma patients. Furthermore, results of Gene Set Enrichment Analysis (GSEA) suggested that lncR-C3orf35 may be involved in cellular invasion, the Toll-like receptor signaling pathway, and immune cell infiltration in the tumor microenvironment. Further analysis showed that patients with osteosarcoma metastasis expressed higher levels of lncR-C3orf35 and HMGB1 compared to metastasis-free patients. Moreover, the metastasis-free survival rate of the high lncR-C3orf35/HMGB1 expression group was significantly lower than that of the low expression group. The ESTIMATE algorithm was used to calculate the immune score and stromal scores for each sample. High lncR-C3orf35 and HMGB1 levels were correlated with low immune scores. ImmuCellAI analysis revealed that a low proportion of macrophage infiltration was associated with high lncR-C3orf35 and HMGB1 expression. The differential expression of lncR-C3orf35, miR-142-3p, and HMGB1 was further verified by quantitative real-time PCR. This study indicates that lncR-C3orf35 could be considered as a novel potential biomarker and therapeutic target of osteosarcoma, which may contribute to a better understanding of ceRNA regulatory mechanisms.
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Long noncoding RNA PART1 restrains aggressive gastric cancer through the epigenetic silencing of PDGFB via the PLZF-mediated recruitment of EZH2. Oncogene 2020; 39:6513-6528. [PMID: 32901105 DOI: 10.1038/s41388-020-01442-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 07/19/2020] [Accepted: 08/21/2020] [Indexed: 01/26/2023]
Abstract
Current reports refer to the role of long noncoding RNA (lncRNA) prostate androgen-regulated transcript 1 (PART1) as a tumor suppressor in some types of cancer but as an oncogene in other kinds of cancer. In gastric cancer, it had been reported to be downregulated. However, the clinical significance and underlying mechanism of PART1 function in gastric cancer remains undefined. Here, seven differential expression levels of noncoding RNAs (DE-lncRNAs) were screened from gastric cancer through a probe reannotation of a human exon array. PART1 was selected for further study because of its high fold change number. In our cohort, PART1 was identified as a significant downregulated lncRNA in gastric cancer tissues by qPCR and in situ hybridization (ISH), and its low expression was significantly correlated with postoperative metastasis and short overall survival time after surgery. Through the results of gain-of-function experiments, PART1 was confirmed as a tumor suppressor that can decrease not only cell viability, migration, and invasion in vitro but also tumorigenesis and tumor metastasis in vivo. Mechanistically, RNA pull-down and RNA-binding protein immunoprecipitation (RIP) showed that PART1 interacts with androgen receptor (AR), and then, promyelocytic leukemia zinc finger (PLZF) is upregulated in an androgen-independent manner. In a chain reaction, chromatin immunoprecipitation (ChIP) assay additionally illustrated that PLZF upregulation increased the enrichment of EZH2 and H3K27 trimethylation in the platelet-derived growth factor (PDGFB) promotor, thereby inhibition of PDGFB and the subsequent PDGFRβ/PI3K/Akt signaling pathway. Based on these findings, we showed PART1 plays a tumor suppressor role by promoting PLZF expression followed by recruitment of EZH2 to mediate epigenetic PDGFB silencing and downstream PI3K/Akt inhibition, suggesting that PART1 has a key role in restraining the aggressive ability of GC cells and providing a novel perspective on lncRNAs in GC progression.
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Liu M, Li J, Huang Z, Li Y. Gastric cancer risk-scoring system based on analysis of a competing endogenous RNA network. Transl Cancer Res 2020; 9:3889-3902. [PMID: 35117756 PMCID: PMC8798172 DOI: 10.21037/tcr-19-2977] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Accepted: 04/17/2020] [Indexed: 12/24/2022]
Abstract
Background Long noncoding RNAs (lncRNAs) can play vital roles in tumor initiation, progression, invasion, and metastasis. However, the functional role of the lncRNA-based competing endogenous RNA (ceRNA) networks in gastric cancer (GC) is still unclear. We aimed to identify novel lncRNAs and their association with GC prognosis. Methods The lncRNA, miRNA, and mRNA expression profiles of GC patients data were obtained from The Cancer Genome Atlas (TCGA) database. Differentially expressed genes (DEGs) were identified using the edge-R package. Then, the relationship among lncRNAs-miRNAs-mRNAs was integrated into a constructed ceRNA network with Cytoscape software. Using Cox regression analysis, a risk score system based on DEGs associated with patient prognosis in GC was established. Finally, a nomogram was founded to predict the prognosis of GC patients. Results A total of 971 differentially expressed lncRNAs (DElncRNAs), 144 differentially expressed miRNAs (DEmiRNAs) and 2,789 differentially expressed mRNAs (DEmRNAs) were identified and found to be associated with GC risk. Using the bioinformatics method, a ceRNA network involving 62 DElncRNAs, 21 DEmiRNAs and 59 DEmRNAs was constructed. Based on the results of the Cox regression analysis, a risk-scoring system involving 3 lncRNAs (i.e., ADAMTS9-AS1, C15orf54, and AL391152.1) was set up for the survival analysis of GC patients. The area under the receiver operating characteristic (ROC) curve for the risk-scoring system was 0.674, with a C-index of 0.64 [95% confidence interval (CI): 0.59–0.69, P=2.806485e−08]. Univariate and multivariate Cox regression analyses demonstrated that the risk-scoring system was an independent prognostic factor for GC. The risk-scoring system is positively associated with advanced tumor grade. The expression of these 3 lncRNAs were validated in GEPIA database. A nomogram based on these 3 lncRNAs was created to predict the prognosis of GC patients. Conclusions Our study established a novel lncRNA-expression-based ceRNA network and an ADAMTS9-AS1-C15orf54-AL391152.1-based risk-scoring system, which can be used to predict the prognosis of GC patients.
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Affiliation(s)
- Min Liu
- Department of Respiratory Medicine, The Affiliated Hospital of Hunan Academy of Chinese Medicine, Changsha 41006, China
| | - Jing Li
- Department of Oncology, The First Hospital of Hunan University of Chinese Medicine, Changsha 410007, China
| | - Zhengkai Huang
- College of Integrated Chinese Medicine and Western Medicine, Hunan University of Chinese Medicine, Changsha 410208, China
| | - Yuejun Li
- Department of Oncology, The Third Affiliated Hospital of Hunan University of Chinese Medicine, Zhuzhou 412000, China.,Department of Oncology, The First Affiliated Hospital of Hunan College of Chinese Medicine, Zhuzhou 412000, China
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