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Hu Y, Zheng L, Zhang J, Shen Y, Zhang X, Lin L. LncRNA-MALAT1 is a promising biomarker for prognostic evaluation of tongue squamous cell carcinoma. Eur Arch Otorhinolaryngol 2020; 277:3155-3160. [PMID: 32383096 DOI: 10.1007/s00405-020-06023-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 04/27/2020] [Indexed: 01/04/2023]
Abstract
PURPOSE MALAT1 is recognized as an oncogenic lncRNA in various malignancies. Here, the authors aim to explore the association of MALAT1 expression and prognostic implication in tongue squamous cell carcinoma (SCC). METHODS The tongue tissues of 128 tongue SCC cases satisfying strict follow-up criteria and 28 normal cases were subjected to qRT-PCR assay for monitoring MALAT1 expression. Chi-square test was applied to explore the correlation between MALAT1 expression and clinicopathological features of tongue SCC. Kaplan-Meier analysis was used to calculate survival rates. Cox proportional hazard analysis was adopted to analyze the relationship between prognostic factors and patient survival. RESULTS The expression of MALAT1 was upregulated in tongue SCC, compared to normal tongue tissues. The expression level of MALAT1 was correlated to differentiation and stage of tongue SCC, and high MALAT1 expression was associated with low disease-free survival and overall survival rates. Moreover, advanced tongue SCC patients with high MALAT1 level had lower disease-free survival and decreased overall survival rate than patients with low MALAT1 level. These results revealed that MALAT1 overexpression can be considered as a significant prognostic factor to independently predict the disease-free survival and overall survival rate of tongue SCC. CONCLUSIONS The expression level of MALAT1 is closely related with progression of tongue SCC. Furthermore, MALAT1 can serve as an independent biomarker for prognostic evaluation of tongue SCC.
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Affiliation(s)
- Yuqian Hu
- Institute of Molecular Medicine, Medical College of Eastern Liaoning University, Dandong, 118000, China
| | - Linlin Zheng
- Institute of Molecular Medicine, Medical College of Eastern Liaoning University, Dandong, 118000, China
| | - Jinhui Zhang
- Institute of Molecular Medicine, Medical College of Eastern Liaoning University, Dandong, 118000, China
| | - Yue Shen
- Institute of Molecular Medicine, Medical College of Eastern Liaoning University, Dandong, 118000, China
| | - Xiaoyan Zhang
- Department of Pathology, Fifth People's Hospital of Shenyang City, Shenyang Tumor Hospital, Shenyang, 110023, China.
| | - Lijuan Lin
- Institute of Molecular Medicine, Medical College of Eastern Liaoning University, Dandong, 118000, China.
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Wang Y, Sun B, Wen X, Hao D, Du D, He G, Jiang X. The Roles of lncRNA in Cutaneous Squamous Cell Carcinoma. Front Oncol 2020; 10:158. [PMID: 32185124 PMCID: PMC7059100 DOI: 10.3389/fonc.2020.00158] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 01/29/2020] [Indexed: 02/05/2023] Open
Abstract
Cutaneous squamous cell carcinoma derives from keratinocytes and is the second most common cause of non-melanoma skin cancer. Cutaneous squamous cell carcinoma (cSCC) develops rapidly and is also the leading cause of death in non-melanoma cancers. Lymph node metastasis occurs in 5% of cSCC patients, and some patients may even metastasize to the viscera. Patients with regional lymphatic metastasis or distant metastases have a <20% 10-year survival rate, indicating the substantial challenge in treating advanced and metastatic cSCC. Some lncRNAs have been found to be abnormally overexpressed in many tumor tissues, so that they can be considered as potential new biomarkers or targets that can be used in the diagnosis and treatment of cSCC in the future. In this review, we summarize the role of lncRNA in cutaneous squamous cell carcinoma to make a better understanding of mutations in cSCC and lay the foundation for effective target therapy of cSCC.
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Affiliation(s)
- Yujia Wang
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
| | - Bensen Sun
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
| | - Xiang Wen
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
| | - Dan Hao
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
| | - Dan Du
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
| | - Gu He
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Xian Jiang
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
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Tian S, Wang C, Zhang J, Yu D. The cox-filter method identifies respective subtype-specific lncRNA prognostic signatures for two human cancers. BMC Med Genomics 2020; 13:18. [PMID: 32024523 PMCID: PMC7003323 DOI: 10.1186/s12920-020-0691-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 01/29/2020] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND The most common histological subtypes of esophageal cancer are squamous cell carcinoma (ESCC) and adenocarcinoma (EAC). It has been demonstrated that non-marginal differences in gene expression and somatic alternation exist between these two subtypes; consequently, biomarkers that have prognostic values for them are expected to be distinct. In contrast, laryngeal squamous cell cancer (LSCC) has a better prognosis than hypopharyngeal squamous cell carcinoma (HSCC). Likewise, subtype-specific prognostic signatures may exist for LSCC and HSCC. Long non-coding RNAs (lncRNAs) hold promise for identifying prognostic signatures for a variety of cancers including esophageal cancer and head and neck squamous cell carcinoma (HNSCC). METHODS In this study, we applied a novel feature selection method capable of identifying specific prognostic signatures uniquely for each subtype - the Cox-filter method - to The Cancer Genome Atlas esophageal cancer and HSNCC RNA-Seq data, with the objectives of constructing subtype-specific prognostic lncRNA expression signatures for esophageal cancer and HNSCC. RESULTS By incorporating biological relevancy information, the lncRNA lists identified by the Cox-filter method were further refined. The resulting signatures include genes that are highly related to cancer, such as H19 and NEAT1, which possess perfect prognostic values for esophageal cancer and HNSCC, respectively. CONCLUSIONS The Cox-filter method is indeed a handy tool to identify subtype-specific prognostic lncRNA signatures. We anticipate the method will gain wider applications.
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Affiliation(s)
- Suyan Tian
- Division of Clinical Research, The First Hospital of Jilin University, 1Xinmin Street, Changchun, Jilin, 130021, People's Republic of China.
| | - Chi Wang
- Department of Biostatistics, College of Public Health, University of Kentucky, 800 Rose St, Lexington, KY, 40536, USA
- Markey Cancer Center, University of Kentucky, 800 Rose St, Lexington, KY, 40536, USA
| | - Jing Zhang
- School of Life Science, 2699 Qianjin Street, Changchun, Jilin, 130012, People's Republic of China
| | - Dan Yu
- Department of Otolaryngology Head and Neck Surgery, The Second Hospital of Jilin University, 218 Ziqiang Road, Changchun, Jilin, 130041, People's Republic of China.
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Ghafouri-Fard S, Mohammad-Rahimi H, Jazaeri M, Taheri M. Expression and function of long non-coding RNAs in head and neck squamous cell carcinoma. Exp Mol Pathol 2020; 112:104353. [DOI: 10.1016/j.yexmp.2019.104353] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Revised: 11/25/2019] [Accepted: 12/04/2019] [Indexed: 12/31/2022]
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55
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Pentenero M, Bowers L, Jayasinghe R, Cheong SC, Farah CS, Kerr AR, Alevizos I. World Workshop on Oral Medicine VII: Functional pathways involving differentially expressed lncRNAs in oral squamous cell carcinoma. Oral Dis 2020; 25 Suppl 1:79-87. [PMID: 31140691 DOI: 10.1111/odi.13051] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2019] [Accepted: 01/27/2019] [Indexed: 12/14/2022]
Abstract
Long non-coding RNAs (lncRNA) modulate gene expression at the epigenetic, transcriptional and post-transcriptional levels and are involved in tumorigenesis. They can form complex secondary and tertiary structures and have been shown to act as precursors, enhancers, reservoirs and decoys in the complex endogenous RNA network. They were first reported in relation to oral squamous cell carcinoma (OSCC) in 2013. Here, we summarise the functional roles and pathways of the most commonly studied lncRNAs in OSCC. Existing research demonstrates the involvement of lncRNA within pivotal pathways leading to the development and spread of OSCC, including interactions with key cancer-associated microRNAs such as miR-21. The number of studies on lncRNA and OSCC remains limited in this new field. As evidence grows, the tissue-specific expression patterns of lncRNAs should further advance our understanding of the altered regulatory networks in OSCC and possibly reveal new biomarkers and therapeutic targets.
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Affiliation(s)
- Monica Pentenero
- Department of Oncology, Oral Medicine and Oral Oncology Unit, University of Turin, Turin, Italy
| | - Leah Bowers
- Department of Stomatology, Division of Oral Medicine, Medical University of South Carolina, Charleston, Charleston, SC, USA
| | - Ruwan Jayasinghe
- Department of Oral Medicine and Periodontology, Faculty of Dental Sciences, University of Peradeniya, Peradeniya, Sri Lanka
| | - Sok Ching Cheong
- Head and Neck Cancer Research Team, Cancer Research Malaysia, Subang Jaya,, Selangor, Malaysia
| | - Camile S Farah
- Australian Centre for Oral Oncology Research & Education, UWA Dental School, Faculty of Health and Medical Sciences, University of Western Australia, Perth, Western Australia, Australia
| | | | - Ilias Alevizos
- Sjogren's Syndrome and Salivary Gland Dysfunction Unit, NIDCR/NIH, Bethesda, MD, USA
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56
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Progress in the study of long noncoding RNA in tongue squamous cell carcinoma. Oral Surg Oral Med Oral Pathol Oral Radiol 2020; 129:51-58. [DOI: 10.1016/j.oooo.2019.08.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 08/13/2019] [Accepted: 08/25/2019] [Indexed: 12/12/2022]
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57
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Qiu JJ, Lin XJ, Tang XY, Zheng TT, Zhang XY, Hua KQ. Long noncoding RNA TC0101441 induces epithelial-mesenchymal transition in epithelial ovarian cancer metastasis by downregulating KiSS1. Int J Cancer 2019; 146:2588-2598. [PMID: 31577838 DOI: 10.1002/ijc.32692] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 08/23/2019] [Accepted: 09/02/2019] [Indexed: 12/17/2022]
Abstract
Peritoneal metastasis is a critical feature and clinical challenge in epithelial ovarian cancer (EOC). We previously identified a novel long noncoding RNA (lncRNA, TC0101441) in epithelial ovarian cancer (EOC) using microarrays. However, the impact of TC0101441 on EOC metastasis and prognosis remains unclear. TC0101441 expression in EOC tissues and its correlation with clinicopathological factors and prognosis were examined. A series of in vitro and in vivo assays were performed to elucidate the roles and mechanism of TC0101441 in EOC metastasis. We found that TC0101441 levels were elevated in EOC tissues compared with those in normal controls and significantly correlated with an advanced clinical stage and lymph node metastasis. TC0101441 was determined to be an independent prognostic predictor of overall survival (OS) and disease-free survival (DFS). Furthermore, loss-of-function assays showed that TC0101441 promoted the invasive and metastatic capacities of EOC cells both in vitro and in vivo. Mechanistically, the prometastatic effects of TC0101441 were linked to the induction of epithelial-mesenchymal transition (EMT). Importantly, KiSS1 was identified as a downstream target gene of TC0101441 and was downregulated by TC0101441 in EOC cells. After TC0101441 was silenced, the corresponding phenotypes of EOC cell invasion and EMT were reversed by the overexpression of KiSS1. Taken together, our data suggest that TC0101441 functions as a potential promigratory/invasive oncogene by promoting EMT and metastasis in EOC through downregulation of KiSS1, which may represent a novel prognostic marker and therapeutic target in EOC.
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Affiliation(s)
- Jun-Jun Qiu
- Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China.,Obstetrics and Gynecology Department of Shanghai Medical College, Fudan University, Shanghai, China.,Shanghai Key Laboratory of Female Reproductive Endocrine-Related Diseases, Shanghai, China
| | - Xiao-Jing Lin
- Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China.,Obstetrics and Gynecology Department of Shanghai Medical College, Fudan University, Shanghai, China.,Shanghai Key Laboratory of Female Reproductive Endocrine-Related Diseases, Shanghai, China
| | - Xiao-Yan Tang
- Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China.,Obstetrics and Gynecology Department of Shanghai Medical College, Fudan University, Shanghai, China.,Shanghai Key Laboratory of Female Reproductive Endocrine-Related Diseases, Shanghai, China
| | - Ting-Ting Zheng
- Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China.,Obstetrics and Gynecology Department of Shanghai Medical College, Fudan University, Shanghai, China.,Shanghai Key Laboratory of Female Reproductive Endocrine-Related Diseases, Shanghai, China
| | - Xu-Yin Zhang
- Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China.,Obstetrics and Gynecology Department of Shanghai Medical College, Fudan University, Shanghai, China.,Shanghai Key Laboratory of Female Reproductive Endocrine-Related Diseases, Shanghai, China
| | - Ke-Qin Hua
- Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China.,Obstetrics and Gynecology Department of Shanghai Medical College, Fudan University, Shanghai, China.,Shanghai Key Laboratory of Female Reproductive Endocrine-Related Diseases, Shanghai, China
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Metastasis Associated Lung Adenocarcinoma Transcript 1: An update on expression pattern and functions in carcinogenesis. Exp Mol Pathol 2019; 112:104330. [PMID: 31712117 DOI: 10.1016/j.yexmp.2019.104330] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 11/03/2019] [Indexed: 12/28/2022]
Abstract
The Metastasis Associated Lung Adenocarcinoma Transcript 1 (MALAT1) is among long non-coding RNAs (lncRNAs) which has disapproved the old term of "junk DNA" which was used for majority of human genome which are not transcribed to proteins. An extensive portion of literature points to the fundamental role of this lncRNA in tumorigenesis process of diverse cancers ranging from solid tumors to leukemia. Being firstly identified in lung cancer, it has prognostic and diagnostic values in several cancer types. Consistent with the proposed oncogenic roles for this lncRNA, most of studies have shown up-regulation of MALAT1 in malignant tissues compared with non-malignant/normal tissues of the same source. However, few studies have shown down-regulation of MALAT1 in breast cancer, endometrial cancer, colorectal cancer and glioma. In the current study, we have conducted a comprehensive literature search and provided an up-date on the role of MALAT1 in cancer biology. Our investigation underscores a potential role as a diagnostic/prognostic marker and a putative therapeutic target for MALAT1.
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Wen J, Chen L, Tian H, Li J, Zhang M, Cao Q, Zhang W, Chen S, Shi L. Effect of MALAT1 Polymorphisms on Papillary Thyroid Cancer in a Chinese Population. J Cancer 2019; 10:5714-5721. [PMID: 31788131 PMCID: PMC6879318 DOI: 10.7150/jca.28887] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 01/05/2019] [Indexed: 12/13/2022] Open
Abstract
Background: Long noncoding RNA MALAT1 has been previously reported in the carcinogenesis of several tumors, and its potential functional polymorphisms have also been investigated in various diseases. However, the relationship between these polymorphisms and the susceptibility of thyroid cancer has still been largely unknown. In the present study, we aimed to explore the association between MALAT1 polymorphisms and thyroid cancer (TC) susceptibility, as well as potential biological function in TC. Methods: We conducted a case-control study with 1134 papillary thyroid cancer (PTC) patients and 1228 controls to evaluate the potential correlation between MALAT1 genetic variations (single nucleotide polymorphism, SNP) and the risk of PTC. More detailed molecular mechanisms were explored by luciferase assay, cell counting kit-8 (CCK-8), and flow cytometry. Results: MALAT1 SNP rs619586 was identified as a significantly protective factor of PTC susceptibility (P = 0.017, OR= 0.76, 95%CI = 0.60-0.95). Further functional experiments of rs619586 indicated that G allele of rs619586 could significantly decrease MALAT1expression, reduce PTC proliferation, and directly increase PTC apoptosis. Conclusions: Our findings suggested that MALAT1 SNP rs619586 could serve as a potential indicator for PTC susceptibility and pathogenesis.
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Affiliation(s)
- Jing Wen
- Department of Ultrasonics, the Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China.,Department of Pathophysiology, the Institute of Basic Medicine, Guizhou Medical University, Guiyang 550004, China
| | - Liang Chen
- Department of General Surgery, Wujiang NO.1 People's Hospital, Suzhou 215200, China
| | - Hua Tian
- Department of acute infectious disease Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - Ji Li
- Department of Pathophysiology, the Institute of Basic Medicine, Guizhou Medical University, Guiyang 550004, China.,Central Laboratory, the Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
| | - Miao Zhang
- Department of Endocrinology, the Hospital Affiliated to Guizhou Medical University, Guiyang 550004, China
| | - Qing Cao
- College of Medicine, Henan University of Science and Technology, Luoyang 471023, China
| | - Wei Zhang
- Department of Thyroid Surgery, the Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
| | - Shi Chen
- Department of Public Health Sciences, University of North Carolina Charlotte, Charlotte, NC 28223, USA
| | - Lixin Shi
- Department of Pathophysiology, the Institute of Basic Medicine, Guizhou Medical University, Guiyang 550004, China.,Department of Endocrinology, the Hospital Affiliated to Guizhou Medical University, Guiyang 550004, China
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Zhang J, Jiang T, Liang X, Shu S, Xiang X, Zhang W, Guo T, Xie W, Deng W, Tang X. lncRNA MALAT1 mediated high glucose-induced HK-2 cell epithelial-to-mesenchymal transition and injury. J Physiol Biochem 2019; 75:443-452. [PMID: 31388927 DOI: 10.1007/s13105-019-00688-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 05/26/2019] [Indexed: 01/10/2023]
Abstract
Epithelial-to-mesenchymal transition (EMT) and injury of tubular cells play critical roles in the pathogenesis of diabetic nephropathy (DN). lncRNA metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) has been shown to be involved in DN progression. However, whether MALAT1 induces EMT and injury in tubular cells is unclear. Here, we investigated the effects of MALAT1 on human proximal tubular cells (HK-2 cells) and the underlying mechanism. We performed qPCR to detect MALAT1, E-cadherin, α-smooth muscle actin (α-SMA), kidney injury molecule 1 (KIM-1), and neutrophil gelatinase-associated lipocalin (NGAL). Additionally, we conducted Western blot analyses to measure E-cadherin, α-SMA, cyclin D1, c-Myc, and β-catenin in HK-2 cells cultured with normal glucose and high glucose (HG) and in transfected cells or cells treated with LiCl and DKK-1. The β-catenin localization was observed using immunofluorescence, and the protein levels of NGAL and KIM-1 were evaluated by ELISA. We found that HG-upregulated MALAT1 decreased E-cadherin and increased α-SMA, KIM-1, NGAL, cyclin D1, c-Myc, and β-catenin in HK-2 cells. LiCl exposure increased the expression of α-SMA but decreased that of E-cadherin on the base of knocking down MALAT1, and decreased NGAL and KIM-1 expression. DKK-1 showed the opposite effects. Our results suggested that upregulated MALAT1 induced EMT in HG-treated HK-2 cells through activating the Wnt/β-catenin pathway. However, MALAT1-mediated injury in HK-2 cells was not mediated by activation of the Wnt/β-catenin pathway. Our results indicate that MALAT1 might serve as a novel therapeutic target for suppressing the progression of DN.
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Affiliation(s)
- Jun Zhang
- Department of Nephrology, Zhujiang Hospital of Southern Medical University, 253 Gongye Road, Guangzhou, 510282, Guangdong, People's Republic of China
| | - Tingting Jiang
- Department of Nephrology, Zhujiang Hospital of Southern Medical University, 253 Gongye Road, Guangzhou, 510282, Guangdong, People's Republic of China
- Department of Nephrology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi Province, 530021, China
| | - Xiujie Liang
- Department of Medicine/Physiology, University of Fribourg, Chemin du Musée 5, 1700, Fribourg, Switzerland
| | - Shuangshuang Shu
- Department of Nephrology, Nanfang Hospital of Southern Medical University, Guangzhou, Guangdong Province, China
| | - Xiaohong Xiang
- Department of Nephrology, Second Xiangya Hospital of Central South University, Changsha, Hunan Province, China
| | - Wenying Zhang
- Department of Nephrology, Zhujiang Hospital of Southern Medical University, 253 Gongye Road, Guangzhou, 510282, Guangdong, People's Republic of China
| | - Tingting Guo
- Department of Nephrology, Zhujiang Hospital of Southern Medical University, 253 Gongye Road, Guangzhou, 510282, Guangdong, People's Republic of China
| | - Wei Xie
- Department of Nephrology, Zhujiang Hospital of Southern Medical University, 253 Gongye Road, Guangzhou, 510282, Guangdong, People's Republic of China
| | - Weiqian Deng
- Department of Nephrology, Fifth Affiliated Hospital of Southern Medical University, 566 Congcheng Road, Conghua District, Guangzhou, 510900, Guangdong, People's Republic of China.
| | - Xun Tang
- Department of Nephrology, Zhujiang Hospital of Southern Medical University, 253 Gongye Road, Guangzhou, 510282, Guangdong, People's Republic of China.
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Qiu X, Lei Z, Wang Z, Xu Y, Liu C, Li P, Wu H, Gong Z. Knockdown of LncRNA RHPN1-AS1 Inhibits Cell Migration, Invasion and Proliferation in Head and Neck Squamous Cell Carcinoma. J Cancer 2019; 10:4000-4008. [PMID: 31417644 PMCID: PMC6692605 DOI: 10.7150/jca.29029] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 05/26/2019] [Indexed: 12/27/2022] Open
Abstract
Previous studies have revealed that long non-coding RNAs (lncRNAs) are involved in head and neck squamous cell carcinoma (HNSCC) progression. However, the detailed roles of lncRNA RHPN1-AS1 remain to be elucidated. In this study, by analyzing online RNA-Seq data, we found that RHPN1-AS1 was upregulated in HNSCC tissues and that its expression level was associated with neoplasm histologic grade. High expression of RHPN1-AS1 was also confirmed in HNSCC tissues. Knockdown of RHPN1-AS1 inhibited tumor cell migration, invasion and proliferation in HNSCC. Furthermore, inhibition of RHPN1-AS1 suppressed the expression of epithelial-mesenchymal transition (EMT)-related genes (β-Catenin, Claudin-1 and Vimentin) in HNSCC cells. Collectively, our results suggest that RHPN1-AS1, acting as an oncogene, may be a potential diagnostic and therapeutic target in HNSCC.
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Affiliation(s)
- Xiaowen Qiu
- Department of Stomatology, Second Xiangya Hospital, Central South University, Changsha 410011, Hunan, China.,Department of Stomatology, Haikou people's Hospital, Haikou 570208, Hainan, China
| | - Zhuo Lei
- Xiangya Stomatological Hospital & School of Stomatology, Central South University, Changsha 410008, Hunan, China
| | - Zeyou Wang
- Department of Laboratory Medicine, Second Xiangya Hospital, Central South University, Changsha 410011, Hunan, China
| | - Yuming Xu
- Department of Stomatology, Second Xiangya Hospital, Central South University, Changsha 410011, Hunan, China
| | - Chang Liu
- Department of Stomatology, Second Xiangya Hospital, Central South University, Changsha 410011, Hunan, China
| | - Panchun Li
- Department of Stomatology, Second Xiangya Hospital, Central South University, Changsha 410011, Hunan, China
| | - Hanjiang Wu
- Department of Stomatology, Second Xiangya Hospital, Central South University, Changsha 410011, Hunan, China
| | - Zhaojian Gong
- Department of Stomatology, Second Xiangya Hospital, Central South University, Changsha 410011, Hunan, China
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Li GQ, Fang YX, Liu Y, Meng FR, Wu X, Zhang CW, Zhang Y, Liu D, Gao B. MALAT1-Driven Inhibition of Wnt Signal Impedes Proliferation and Inflammation in Fibroblast-Like Synoviocytes Through CTNNB1 Promoter Methylation in Rheumatoid Arthritis. Hum Gene Ther 2019; 30:1008-1022. [PMID: 30909750 DOI: 10.1089/hum.2018.212] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Fibroblast-like synoviocytes (FLSs) participate in the pathogenesis of rheumatoid arthritis (RA). Emerging evidence has highlighted the role of long non-coding RNA metastasis associated lung adenocarcinoma transcript 1 (MALAT1) and its potential involvement in RA. In this study, we test the hypothesis that the MALAT1 might inhibit proliferation and inflammatory response of FLSs in RA. The expression of MALAT1 was examined in synovial tissues from patients with RA. The effect of MALAT1 on cultured FLSs was analyzed by introducing overexpressed MALAT1 or short hairpin RNA (shRNA) against MALAT1. To validate whether methylation of CTNNB1 promoter was affected by MALAT1 alternation, we assessed the recruitment of DNA methyltransferases to CTNNB1 promoter. In cultured FLSs with shRNA-mediated CTNNB1 knockdown or activated Wnt signaling, we found the interaction between CTNNB1 and Wnt signaling. MALAT1 expression was reduced in synovial tissues of RA. MALAT1 could bind to CTNNB1 promoter region and recruit methyltransferase to promote CTNNB1 promoter methylation, thereby inhibiting CTNNB1. Notably, MALAT1 could suppress the transcription and expression of CTNNB1, thereby modulating the Wnt signaling pathway. Silenced MALAT1 stimulated the nucleation of β-catenin and the secretion of inflammatory cytokines including interleukin-6, interleukin-10, and tumor necrosis factor-α. Additionally, shRNA-mediated MALAT1 silencing elevated proliferation and suppressed apoptosis of FLSs accompanied. These findings provide evidence for the inhibitory effect of MALAT1 on proliferation and inflammation of FLSs by promoting CTNNB1 promoter methylation and inhibiting the Wnt signaling pathway. Therefore, this study provides a candidate therapeutic target for RA.
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Affiliation(s)
- Guo-Qing Li
- 1Department of Rheumatology, Affiliated Hospital of Yangzhou University, Yangzhou, P.R. China
| | - Yu-Xuan Fang
- 1Department of Rheumatology, Affiliated Hospital of Yangzhou University, Yangzhou, P.R. China.,2Clinical Medical College, Dalian Medical University, Dalian, P.R. China
| | - Ying Liu
- 1Department of Rheumatology, Affiliated Hospital of Yangzhou University, Yangzhou, P.R. China.,2Clinical Medical College, Dalian Medical University, Dalian, P.R. China
| | - Fan-Ru Meng
- 1Department of Rheumatology, Affiliated Hospital of Yangzhou University, Yangzhou, P.R. China.,2Clinical Medical College, Dalian Medical University, Dalian, P.R. China
| | - Xia Wu
- 1Department of Rheumatology, Affiliated Hospital of Yangzhou University, Yangzhou, P.R. China.,2Clinical Medical College, Dalian Medical University, Dalian, P.R. China
| | - Chun-Wang Zhang
- 1Department of Rheumatology, Affiliated Hospital of Yangzhou University, Yangzhou, P.R. China.,2Clinical Medical College, Dalian Medical University, Dalian, P.R. China
| | - Yu Zhang
- 1Department of Rheumatology, Affiliated Hospital of Yangzhou University, Yangzhou, P.R. China
| | - Dan Liu
- 1Department of Rheumatology, Affiliated Hospital of Yangzhou University, Yangzhou, P.R. China
| | - Bo Gao
- 3Department of Rheumatology, Affiliated Changzhou Second Hospital of Nanjing Medical University, Changzhou, P.R. China
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Pentenero M, Bowers LM, Jayasinghe R, Yap T, Cheong SC, Kerr AR, Farah CS, Alevizos I. World Workshop on Oral Medicine VII: Clinical evidence of differential expression of lncRNAs in oral squamous cell carcinoma: A scoping review. Oral Dis 2019; 25 Suppl 1:88-101. [PMID: 31140697 PMCID: PMC6544174 DOI: 10.1111/odi.13076] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2019] [Revised: 02/08/2019] [Accepted: 02/22/2019] [Indexed: 12/13/2022]
Abstract
BACKGROUND Long non-coding RNAs (lncRNAs) have important roles in regulating gene expression pertaining to cell proliferation, survival, migration and genomic stability. Dysregulated expression of lncRNAs is implicated in cancer initiation, progression and metastasis. OBJECTIVES To explore, map and summarize the extent of evidence from clinical studies investigating the differential expression of lncRNAs in oral/tongue squamous cell carcinoma. METHODS PubMed, Scopus and Web of Science were used as search engines. Clinical, full-length, English language studies were included. PRISMA-ScR protocol was used to evaluate and present results. The present scoping review summarizes relationships of the differential expression of lncRNAs with the presence of tumour and with clinicopathological features including survival. RESULTS Almost half of the investigated transcripts have been explored in more than one study, yet not always with consistent results. The collected data were also compared to the limited studies investigating oral epithelial dysplasia. Data are not easily comparable, first because of different methods used to define what differential expression is, and second because only a limited number of studies performed multivariate analyses to identify clinicopathological features associated with the differentially expressed lncRNAs. CONCLUSIONS Standard methods and more appropriate data analyses are needed in order to achieve reliable results from future studies.
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Affiliation(s)
- Monica Pentenero
- Department of Oncology, Oral Medicine and Oral Oncology Unit, University of Turin, Turin, Italy
| | - Leah M Bowers
- Department of Stomatology, Division of Oral Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - Ruwan Jayasinghe
- Department of Oral Medicine and Periodontology, Faculty of Dental Sciences, University of Peradeniya, Peradeniya, Sri Lanka
| | - Tami Yap
- Melbourne Dental School, University of Melbourne, Melbourne, Victoria, Australia
| | - Sok Ching Cheong
- Head and Neck Cancer Research Team, Cancer Research Malaysia, Subang Jaya, Selangor, Malaysia
| | | | - Camile S Farah
- Australian Centre for Oral Oncology Research & Education, UWA Dental School, Faculty of Health and Medical Sciences, University of Western Australia, Perth, Western Australia, Australia
| | - Ilias Alevizos
- Sjogren's Syndrome and Salivary Gland Dysfunction Unit, NIDCR/NIH, Bethesda, MD, USA
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64
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Song Y, Pan Y, Liu J. Functional analysis of lncRNAs based on competitive endogenous RNA in tongue squamous cell carcinoma. PeerJ 2019; 7:e6991. [PMID: 31179185 PMCID: PMC6544013 DOI: 10.7717/peerj.6991] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 04/21/2019] [Indexed: 02/05/2023] Open
Abstract
Backround Tongue squamous cell carcinoma (TSCC) is the most common malignant tumor in the oral cavity. An increasing number of studies have suggested that long noncoding RNA (lncRNA) plays an important role in the biological process of disease and is closely related to the occurrence and development of disease, including TSCC. Although many lncRNAs have been discovered, there remains a lack of research on the function and mechanism of lncRNAs. To better understand the clinical role and biological function of lncRNAs in TSCC, we conducted this study. Methods In this study, 162 tongue samples, including 147 TSCC samples and 15 normal control samples, were investigated and downloaded from The Cancer Genome Atlas (TCGA). We constructed a competitive endogenous RNA (ceRNA) regulatory network. Then, we investigated two lncRNAs as key lncRNAs using Kaplan-Meier curve analysis and constructed a key lncRNA-miRNA-mRNA subnetwork. Furthermore, gene set enrichment analysis (GSEA) was carried out on mRNAs in the subnetwork after multivariate survival analysis of the Cox proportional hazards regression model. Results The ceRNA regulatory network consists of six differentially expressed miRNAs (DEmiRNAs), 29 differentially expressed lncRNAs (DElncRNAs) and six differentially expressed mRNAs (DEmRNAs). Kaplan-Meier curve analysis of lncRNAs in the TSCC ceRNA regulatory network showed that only two lncRNAs, including LINC00261 and PART1, are correlated with the total survival time of TSCC patients. After we constructed the key lncRNA-miRNA -RNA sub network, the GSEA results showed that key lncRNA are mainly related to cytokines and the immune system. High expression levels of LINC00261 indicate a poor prognosis, while a high expression level of PART1 indicates a better prognosis.
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Affiliation(s)
- Yidan Song
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yihua Pan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jun Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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65
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miR-425-5p decreases LncRNA MALAT1 and TUG1 expressions and suppresses tumorigenesis in osteosarcoma via Wnt/β-catenin signaling pathway. Int J Biochem Cell Biol 2019; 111:42-51. [PMID: 30986552 DOI: 10.1016/j.biocel.2019.04.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 03/25/2019] [Accepted: 04/09/2019] [Indexed: 12/14/2022]
Abstract
Multiple miRNAs have been recognized as critical regulators in osteosarcoma (OS) carcinogenesis. miR-425-5p was demonstrated to be downregulated in the serum of OS patients. However, the detailed roles of miR-425-5p in OS progression and its underlying molecular mechanism are far from being addressed. In our study, the reduced expression of miR-425-5p was observed in OS tissues and cells. Functional analyses showed that miR-425-5p overexpression suppressed OS cell proliferation, invasion and migration in vitro. Moreover, miR-425-5p upregulation decreased the expressions of MALAT1 and TUG1 in OS cells via directly binding them. miR-425-5p upregulation strikingly abrogated the activation of Wnt/β-catenin signaling pathway induced by MALAT1 and TUG1 overexpression in OS cells. Finally, we validated that miR-425-5p hindered OS tumor growth, and suppressed MALAT1 and TUG1 expressions and the Wnt/β-catenin signaling pathway in vivo. Our findings concluded that miR-425-5p suppressed the tumorigenesis of OS via decreasing MALAT1 and TUG1 expressions through inactivation of the Wnt/β-catenin signaling pathway, contributing to a better understanding of the molecular mechanism of the tumorigenesis of OS.
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66
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Wang J, Zhang X, Chen W, Hu X, Li J, Liu C. Regulatory roles of long noncoding RNAs implicated in cancer hallmarks. Int J Cancer 2019; 146:906-916. [PMID: 30873588 DOI: 10.1002/ijc.32277] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 02/18/2019] [Accepted: 03/11/2019] [Indexed: 12/16/2022]
Abstract
Cancer cells acquire numerous biological properties (designated "cancer hallmarks"), such as cell survival and energy metabolism, that facilitate tumor growth and metastatic dissemination during development. To date, eight hallmarks of cancer have been identified that provide a logical framework for understanding the remarkable diversity of neoplastic diseases, as proposed by Douglas Hanahan and Robert A. Weinberg. Long noncoding RNAs (lncRNAs), a category of transcripts widely demonstrated to exert significant regulatory effects on biological processes, have attracted considerable research attention due to their association with the occurrence and development of cancer. The mechanisms by which lncRNAs exert their functions require elucidation to optimize their potential utility as alternative biomarkers and therapeutic targets during tumor occurrence and progression. In this review, we have discussed recent research progress on lncRNAs involved in various cancer hallmarks and their related mechanisms of action, with a view to providing an updated picture of their immense therapeutic potential in the fight against cancer.
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Affiliation(s)
- Jun Wang
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, Yunnan, China.,Department of Oncology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xuan Zhang
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, Yunnan, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Wen Chen
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, Yunnan, China.,State Key Laboratory of Developmental Biology of Freshwater Fish, School of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - Xiang Hu
- State Key Laboratory of Developmental Biology of Freshwater Fish, School of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - Jing Li
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Changning Liu
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, Yunnan, China.,State Key Laboratory of Developmental Biology of Freshwater Fish, School of Life Sciences, Hunan Normal University, Changsha, Hunan, China
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Dai J, Mu JW, Mu H. Long non-coding RNA CRNDE regulates cell proliferation, migration, invasion, epithelial-mesenchymal transition and apoptosis in oral squamous cell carcinoma. Oncol Lett 2019; 17:3330-3340. [PMID: 30867767 PMCID: PMC6396137 DOI: 10.3892/ol.2019.9978] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Accepted: 10/17/2018] [Indexed: 12/14/2022] Open
Abstract
The present study aimed to investigate whether the long non-coding RNA (lncRNA) colorectal neoplasia differentially expressed (CRNDE) can promote the migration and invasion of human oral squamous cell carcinoma (OSCC) cells via the regulation of epithelial-mesenchymal transition (EMT). CAL-27 and SCC-15 cells were classified into a control group, a small interfering negative control (si-NC) group (cells transfected with control siRNA) and an si-CRNDE group (cells transfected with CRNDE siRNA). The expression of CRNDE in OSCC tissues and cell lines was detected by in situ hybridization (ISH) and reverse transcription-quantitative polymerase chain reaction. An MTT assay was used to detect cell proliferation, flow cytometry was performed to determine cell apoptosis, wound-healing and Transwell assays were conducted to evaluate cell metastasis, and immunofluorescence staining and western blotting were performed to measure the expression of proteins associated with EMT. Tumor-bearing mouse models were established, and the tumor volumes were recorded. An immunohistochemical assay was performed to determine the expression of EMT-related proteins. CRNDE expression was increased in OSCC tissues and cell lines compared with that in normal tissues and cell lines. Compared with the control group, the si-CRNDE group displayed a reduction in the expression of CRNDE, in the proliferation, migration and invasion of cells, in the protein expression of N-cadherin, vimentin and Snail, and in the expression of proteins in the Wnt/β-catenin pathway. However, an increase was displayed in the apoptosis of cells and the expression of E-cadherin. Compared with the control group of tumor-bearing nude mice, the sh-CRNDE group demonstrated slowed tumor growth, reduced tumor weight and elevated E-cadherin, as well as reduced expression of N-cadherin, vimentin and Snail. In conclusion, silencing CRNDE may inhibit EMT, thus decreasing the migration and invasion of human OSCC cells by repressing the activation of the Wnt/β-catenin signaling pathway, thereby restricting cell growth and promoting cell apoptosis.
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Affiliation(s)
- Jing Dai
- Department of Stomatology, Jingzhou Central Hospital, The Second Clinical Medical College, Yangtze University, Jingzhou, Hubei 434020, P.R. China
| | - Jing-Wen Mu
- Department of Stomatology, Dongfang Hospital Beijing University of Chinese Medicine, Beijing 100078, P.R. China
| | - Hong Mu
- Department of Stomatology, Dongfang Hospital Beijing University of Chinese Medicine, Beijing 100078, P.R. China
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68
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Zhu M, Zhang C, Chen D, Chen S, Zheng H. lncRNA MALAT1 potentiates the progression of tongue squamous cell carcinoma through regulating miR-140-5p-PAK1 pathway. Onco Targets Ther 2019; 12:1365-1377. [PMID: 30863103 PMCID: PMC6388959 DOI: 10.2147/ott.s192069] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Tongue squamous cell carcinoma (TSCC) is the second most common malignancy in oral carcinoma. lncRNA metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) was regarded as an oncogenic factor in various carcinomas. However, its underlying molecular mechanisms in the development and progression of TSCC have not been well featured till now. METHODS The expressions of MALAT1, miR-140-5p and p21 (RAC1)-activated kinase 1 (PAK1) mRNA were measured by RT-qPCR assay. The protein level of PAK1 was determined by western blot analysis. Cell viability was detected by Cell Counting Kit-8 assay. Transwell chamber was used to detect cell migratory and invasive capability. Luciferase reporter assay, RNA-binding protein immunoprecipitation (RIP) assay and biotin pull-down assay were applied to evaluate the relationship between MALAT1, miR-140-5p and PAK1. Xenograft experiments were performed to assess the effect and mechanism of MALAT1 in TSCC tumor growth. RESULTS The expression of MALAT1 and p21 (RAC1)-activated kinase 1 (PAK1) was upregulated and microRNA-140-5p (miR-140-5p) expression was downregulated in TSCC tissues and cells. MALAT1 knockdown induced miR-140-5p expression by direct interaction. Moreover, MALAT1 knockdown inhibited proliferation, migration, and invasion by upregulating miR-140-5p expression in TSCC cells. Additionally, PAK1 was identified as a direct target of miR-140-5p. Also, MALAT1 knockdown inhibited PAK1 expression by upregulating miR-140-5p in TSCC cells. Furthermore, miR-140-5p overexpression curbed the proliferation, migration, and invasion of TSCC cells by targeting PAK1. Finally, MALAT1 knockdown inhibited tumor growth by upregulating miR-140-5p and downregulating PAK1 in mouse xenograft models of TSCC. CONCLUSION MALAT1 contributed to TSCC progression via miR-140-5p-PAK1 regulatory axis, highlighting a potential target for TSCC management.
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Affiliation(s)
- Minhui Zhu
- Department of Otorhinolaryngology- Head and Neck Surgery, Changhai Hospital, Second Military Medical University, Shanghai 200433, China, ;
| | - Caiyun Zhang
- Department of Otorhinolaryngology- Head and Neck Surgery, Changhai Hospital, Second Military Medical University, Shanghai 200433, China, ;
| | - Donghui Chen
- Department of Otorhinolaryngology- Head and Neck Surgery, Changhai Hospital, Second Military Medical University, Shanghai 200433, China, ;
| | - Shicai Chen
- Department of Otorhinolaryngology- Head and Neck Surgery, Changhai Hospital, Second Military Medical University, Shanghai 200433, China, ;
| | - Hongliang Zheng
- Department of Otorhinolaryngology- Head and Neck Surgery, Changhai Hospital, Second Military Medical University, Shanghai 200433, China, ;
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69
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Sun Y, Ma L. New Insights into Long Non-Coding RNA MALAT1 in Cancer and Metastasis. Cancers (Basel) 2019; 11:cancers11020216. [PMID: 30781877 PMCID: PMC6406606 DOI: 10.3390/cancers11020216] [Citation(s) in RCA: 190] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 02/07/2019] [Accepted: 02/11/2019] [Indexed: 12/12/2022] Open
Abstract
Metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) is one of the most abundant, long non-coding RNAs (lncRNAs) in normal tissues. This lncRNA is highly conserved among mammalian species, and based on in vitro results, has been reported to regulate alternative pre-mRNA splicing and gene expression. However, Malat1 knockout mice develop and grow normally, and do not show alterations in alternative splicing. While MALAT1 was originally described as a prognostic marker of lung cancer metastasis, emerging evidence has linked this lncRNA to other cancers, such as breast cancer, prostate cancer, pancreatic cancer, glioma, and leukemia. The role described for MALAT1 is dependent on the cancer types and the experimental model systems. Notably, different or opposite phenotypes resulting from different strategies for inactivating MALAT1 have been observed, which led to distinct models for MALAT1's functions and mechanisms of action in cancer and metastasis. In this review, we reflect on different experimental strategies used to study MALAT1's functions, and discuss the current mechanistic models of this highly abundant and conserved lncRNA.
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Affiliation(s)
- Yutong Sun
- Department of Molecular and Cellular Oncology, the University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
| | - Li Ma
- Department of Experimental Radiation Oncology, the University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
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70
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Yang Z, Xie Q, Chen Z, Ni H, Xia L, Zhao Q, Chen Z, Chen P. Resveratrol suppresses the invasion and migration of human gastric cancer cells via inhibition of MALAT1-mediated epithelial-to-mesenchymal transition. Exp Ther Med 2018; 17:1569-1578. [PMID: 30783423 PMCID: PMC6364244 DOI: 10.3892/etm.2018.7142] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 11/22/2018] [Indexed: 12/18/2022] Open
Abstract
Resveratrol, a natural polyphenolic phytoalexin, was reported to exert multiple anticancer effects as a traditional Chinese medicine. However, research regarding the anticancer mechanism of resveratrol for the treatment and prevention of gastric cancer has reported conflicting results. In the present study, it was determined that resveratrol inhibited cell viability in a dose-dependent manner in the human gastric cancer cell line BGC823. Cell migration and invasion were suppressed significantly following treatment with 200 µM resveratrol. Additionally, resveratrol inhibited metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) expression, which was overexpressed in gastric cancer cells. Further experiments revealed that MALAT1 knockdown suppressed cell viability, migration, invasion and epithelial-to-mesenchymal transition in BGC823 cells. The present study indicated that resveratrol inhibited migration and invasion in human gastric cancer cells via suppressing MALAT1-mediated epithelial-to-mesenchymal transition, providing novel evidence for understanding the anticancer mechanism of resveratrol.
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Affiliation(s)
- Zhuying Yang
- Department of Medical Oncology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310006, P.R. China.,Department of Gastroenterology, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang 310012, P.R. China
| | - Qigui Xie
- Department of Gastroenterology, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang 310012, P.R. China
| | - Zhanlei Chen
- Department of Gastroenterology, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang 310012, P.R. China
| | - Haibin Ni
- Department of Gastrointestinal Pancreatic Surgery, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang 310012, P.R. China
| | - Liang Xia
- Department of Gastroenterology, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang 310012, P.R. China
| | - Qiufeng Zhao
- Department of Gastroenterology, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang 310012, P.R. China
| | - Zhiyun Chen
- The Second Central Laboratory, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310006, P.R. China
| | - Peifeng Chen
- Department of Medical Oncology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310006, P.R. China
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71
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Abstract
Purpose The research of long non-coding RNAs (lncRNAs) has become a new passion with the discovery of abundant new lncRNAs and extensive investigation of their roles in various diseases, especially in cancers. Metastasis associated in lung adenocarcinoma transcript 1 (MALAT1) emerges as a hotspot, which has been reported to be involved in dysregulation of cell signaling and closely correlated with cancer development, progression, and response to therapy. This review is a brief update of the current knowledge related to the role of MALAT1 in cancer-associated molecular pathways and pathophysiology and possible determinants for MALAT1 to function as a biomarker, aiming to stimulate the basic investigation of lncRNA MALAT1 as well as its translation to clinical applications. Methods We have selected vast literature from electronic databases including studies associated with its clinical significance and the pivotal functions in cancer processes such as cell proliferation, apoptosis, metastasis, immunity, angiogenesis, and drug resistance. Results Studies have shown that aberrant expression of MALAT1 is related to cancer pathophysiology with the potential to be translated clinically and MALAT1 can regulate cancer processes by interacting with molecules, such as proteins, RNAs and DNAs, and further altering different signal pathways. Conclusion MALAT1 lncRNA promises to be a potential biomarker for cancer diagnosis as well as prognosis. Additionally, it might be a therapeutic target for human cancers.
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Affiliation(s)
- Zhi-Xing Li
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, People's Republic of China, .,Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, 410078, People's Republic of China,
| | - Qiong-Ni Zhu
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, People's Republic of China, .,Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, 410078, People's Republic of China,
| | - Hai-Bo Zhang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, People's Republic of China, .,Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, 410078, People's Republic of China,
| | - Yang Hu
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, People's Republic of China, .,Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, 410078, People's Republic of China,
| | - Guo Wang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, People's Republic of China, .,Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, 410078, People's Republic of China,
| | - Yuan-Shan Zhu
- Department of Medicine, Weill Cornell Medicine, New York, NY, 10065, USA,
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72
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Li Y, Xu Z, Li J, Ban S, Duan C, Liu W. Interleukin-18 expression in oral squamous cell carcinoma: its role in tumor cell migration and invasion, and growth of tumor cell xenografts. FEBS Open Bio 2018; 8:1953-1963. [PMID: 30524946 PMCID: PMC6275252 DOI: 10.1002/2211-5463.12532] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2018] [Revised: 08/16/2018] [Accepted: 09/20/2018] [Indexed: 12/30/2022] Open
Abstract
Oral squamous cell carcinoma (OSCC) is one of the most common head and neck malignancies. Advanced stages of the disease are associated with poor survival, highlighting a need for new treatment modalities. We previously showed that the proinflammatory cytokine interleukin‐18 (IL‐18) has a tumor suppressive role in OSCC. Here, we investigated the effects of IL‐18 on proliferation, migration, and invasion of OSCC cells ex vivo and in vitro, and in nude mouse xenografts. We report that expression of tankyrase 2 (TNKS2), β‐catenin, and N‐cadherin was higher in tumor cells than in normal mucosae, whereas the expression of IL‐18 and E‐cadherin was higher in normal than in tumor tissues. Elevated expression of IL‐18 (P < 0.01) and E‐cadherin (P = 0.034) was associated with tumor differentiation, whereas expression of TNKS2 (P < 0.01), β‐catenin (P = 0.012), and N‐cadherin (P < 0.01) was associated with tumor de‐differentiation. Furthermore, compared with the vector control, IL‐18 overexpression promoted tumor cell migration and invasion (P < 0.01), but inhibited growth of tumor cell xenografts (P < 0.05). At the protein level, expression levels of IL‐18 (P < 0.01), TNKS2 (P = 0.045), β‐catenin (P = 0.028), and N‐cadherin (P = 0.068) were upregulated in tumor cells after IL‐18 overexpression compared with those of the vector control mice, whereas expression levels of E‐cadherin (P = 0.045) were decreased. In conclusion, our data suggest that IL‐18 overexpression induces oral SCC cell invasion and metastasis by promoting the tumor cell epithelial–mesenchymal transition via the Wnt/β‐catenin signaling pathway.
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Affiliation(s)
- Yuyang Li
- Department of Dental Implantology School and Hospital of Stomatology Jilin University Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling Changchun Jilin China
| | - Zhiming Xu
- Department of Oral and Maxillofacial Surgery School and Hospital of Stomatology Jilin University Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling Changchun Jilin China
| | - Jia Li
- Department of Oral and Maxillofacial Surgery School and Hospital of Stomatology Jilin University Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling Changchun Jilin China
| | - Shuofeng Ban
- Department of Oral and Maxillofacial Surgery School and Hospital of Stomatology Jilin University Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling Changchun Jilin China
| | - Congcong Duan
- Department of Oral and Maxillofacial Surgery School and Hospital of Stomatology Jilin University Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling Changchun Jilin China
| | - Weiwei Liu
- Department of Oral and Maxillofacial Surgery School and Hospital of Stomatology Jilin University Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling Changchun Jilin China
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73
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Lei L, Chen J, Huang J, Lu J, Pei S, Ding S, Kang L, Xiao R, Zeng Q. Functions and regulatory mechanisms of metastasis‐associated lung adenocarcinoma transcript 1. J Cell Physiol 2018; 234:134-151. [PMID: 30132842 DOI: 10.1002/jcp.26759] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 04/26/2018] [Indexed: 12/19/2022]
Affiliation(s)
- Li Lei
- Department of Dermatology, Xiangya Hospital Central South University Changsha Hunan China
- Department of Hunan Key Laboratory of Skin Cancer and Psoriasis Xiangya Hospital, Central South University Changsha Hunan China
| | - Jing Chen
- Department of Dermatology Third Xiangya Hospital, Central South University Changsha Hunan China
| | - Jinhua Huang
- Department of Dermatology Third Xiangya Hospital, Central South University Changsha Hunan China
| | - Jianyun Lu
- Department of Dermatology Third Xiangya Hospital, Central South University Changsha Hunan China
| | - Shiyao Pei
- Department of Dermatology Third Xiangya Hospital, Central South University Changsha Hunan China
| | - Shu Ding
- Department of Dermatology Third Xiangya Hospital, Central South University Changsha Hunan China
| | - Liyang Kang
- Department of Dermatology Third Xiangya Hospital, Central South University Changsha Hunan China
| | - Rong Xiao
- Department of Dermatology Second Xiangya Hospital, Central South University Changsha Hunan China
| | - Qinghai Zeng
- Department of Dermatology Third Xiangya Hospital, Central South University Changsha Hunan China
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Chen W, You J, Zheng Q, Zhu YY. Downregulation of lncRNA OGFRP1 inhibits hepatocellular carcinoma progression by AKT/mTOR and Wnt/β-catenin signaling pathways. Cancer Manag Res 2018; 10:1817-1826. [PMID: 29997441 PMCID: PMC6033083 DOI: 10.2147/cmar.s164911] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Introduction Increasing evidence demonstrates that long noncoding RNAs (lncRNAs) play important roles in the progression of hepatocellular carcinoma (HCC) by regulating gene expression. However, the identification of functional lncRNAs in HCC remains insufficient. Our study aimed to investigate the function of lncRNA OGFRP1, which has not been functionally researched before, in Hep3B and HepG2 cells. Methods lncRNA OGFRP1 in HCC cells was down-regulated by using RNAi technology. Quantitative real-time polymerase chain reaction was used to determine the mRNA expression of lncRNA OGFRP1. Cell proliferation was examined by CCK8 and clone formation assays. Cell cycle and apoptosis were analyzed by flow cytometry. Cell migration and invasion were assessed by using Scratch assay and transwell assay, respectively. Protein expression of signaling pathways was determined by using Western blot. Results Cell proliferation of Hep3B was significantly inhibited by down-regulation of lncRNA OGFRP1 (P<0.05). Moreover, siOGFRP1 transfection induced Hep3B cell cycle arrest and apoptosis by regulating the expression of related proteins. Cell migration and invasion of Hep3B were also significantly inhibited by down-regulation of lncRNA OGFRP1. Wnt/β-catenin signaling pathway, involved in epithelial–mesenchymal transition (EMT), was inactivated by lncRNA OGFRP1 downregulation, including decreased expression of Wnt3a, β-catenin, N-cadherin and vimentin and increased expression of E-cadherin. We also found that the inhibitory effect of lncRNA OGFRP1 knockdown on Hep3B was mediated by the AKT/mTOR signaling pathway and IGF-1, an AKT signaling activator, could rescue the cellular phenotype. However, knockdown of lncRNA OGFRP1 did not influence cell proliferation, migration and invasion in HepG2 cells. Conclusion We found that downregulation of lncRNA OGFRP1 suppressed the proliferation and EMT of HCC Hep3B cells through AKT and Wnt/β-catenin signaling pathways. However, lncRNA OGFRP1 exhibited a differentiated function in different HCC cell lines, which required further study in the future.
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Affiliation(s)
- Wei Chen
- Center for Liver Diseases, The First Affiliated Hospital, Fujian Medicine University, Fuzhou 350005, Fujian Province, China, ;
| | - Jia You
- Center for Liver Diseases, The First Affiliated Hospital, Fujian Medicine University, Fuzhou 350005, Fujian Province, China, ;
| | - Qi Zheng
- Center for Liver Diseases, The First Affiliated Hospital, Fujian Medicine University, Fuzhou 350005, Fujian Province, China, ;
| | - Yue-Yong Zhu
- Center for Liver Diseases, The First Affiliated Hospital, Fujian Medicine University, Fuzhou 350005, Fujian Province, China, ;
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Singh AS, Heery R, Gray SG. In Silico and In Vitro Analyses of LncRNAs as Potential Regulators in the Transition from the Epithelioid to Sarcomatoid Histotype of Malignant Pleural Mesothelioma (MPM). Int J Mol Sci 2018; 19:ijms19051297. [PMID: 29701689 PMCID: PMC5983793 DOI: 10.3390/ijms19051297] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 04/23/2018] [Accepted: 04/24/2018] [Indexed: 02/06/2023] Open
Abstract
Malignant pleural mesothelioma (MPM) is a rare malignancy, with extremely poor survival rates. At present, treatment options are limited, with no second line chemotherapy for those who fail first line therapy. Extensive efforts are ongoing in a bid to characterise the underlying molecular mechanisms of mesothelioma. Recent research has determined that between 70–90% of our genome is transcribed. As only 2% of our genome is protein coding, the roles of the remaining proportion of non-coding RNA in biological processes has many applications, including roles in carcinogenesis and epithelial–mesenchymal transition (EMT), a process thought to play important roles in MPM pathogenesis. Non-coding RNAs can be separated loosely into two subtypes, short non-coding RNAs (<200 nucleotides) or long (>200 nucleotides). A significant body of evidence has emerged for the roles of short non-coding RNAs in MPM. Less is known about the roles of long non-coding RNAs (lncRNAs) in this disease setting. LncRNAs have been shown to play diverse roles in EMT, and it has been suggested that EMT may play a role in the aggressiveness of MPM histological subsets. In this report, using both in vitro analyses on mesothelioma patient material and in silico analyses of existing RNA datasets, we posit that various lncRNAs may play important roles in EMT within MPM, and we review the current literature regarding these lncRNAs with respect to both EMT and MPM.
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Affiliation(s)
- Anand S Singh
- Thoracic Oncology Research Group, Trinity Translational Medical Institute, St. James's Hospital, Dublin D08 W9RT, Ireland.
- MSc in Translational Oncology Program, Trinity College Dublin, Dublin 2, Ireland.
| | - Richard Heery
- Thoracic Oncology Research Group, Trinity Translational Medical Institute, St. James's Hospital, Dublin D08 W9RT, Ireland.
- MSc in Translational Oncology Program, Trinity College Dublin, Dublin 2, Ireland.
| | - Steven G Gray
- Thoracic Oncology Research Group, Trinity Translational Medical Institute, St. James's Hospital, Dublin D08 W9RT, Ireland.
- HOPE Directorate, St. James's Hospital, Dublin 8, Ireland.
- Department of Clinical Medicine, Trinity College Dublin, Dublin 8, Ireland.
- Labmed Directorate, St. James's Hospital, Dublin 8, Ireland.
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Yuan H, Wei R, Xiao Y, Song Y, Wang J, Yu H, Fang T, Xu W, Mao S. RHBDF1 regulates APC-mediated stimulation of the epithelial-to-mesenchymal transition and proliferation of colorectal cancer cells in part via the Wnt/β-catenin signalling pathway. Exp Cell Res 2018; 368:24-36. [PMID: 29654741 DOI: 10.1016/j.yexcr.2018.04.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 04/04/2018] [Accepted: 04/10/2018] [Indexed: 12/31/2022]
Abstract
The human rhomboid family-1 gene (RHBDF1) is an oncogene in breast and head and neck squamous cancers. Here, we show that RHBDF1 plays a significant role in colorectal cancer (CRC) formation and that the RHBDF1 expression level is higher in CRC than in corresponding normal tissues. Moreover, RHBDF1 promotes cell proliferation, invasion and migration in vitro. Furthermore, through overexpression and silencing of RHBDF1 and the mediator complex, our study demonstrates that RHBDF1 may positively regulate adenomatous polyposis coli (APC) in the Wnt/β-catenin signalling pathway to increase the expression levels of MMP-14 and Twist, which act as important epithelial-to-mesenchymal transition (EMT) stimulating factors. Additionally, RHBDF1 may regulate c-myc and CyclinD1 expression to influence cell proliferation. Finally, RHBDF1 overexpression and silencing influence CRC growth in BALB/c nude mice. In summary, our findings demonstrate that the regulatory effects of RHBDF1 on EMT and on cell proliferation are partially attributable to the Wnt/β-catenin signalling pathway.
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Affiliation(s)
- Huiping Yuan
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, 330006 Nanchang, Jiangxi, China
| | - Ran Wei
- The First Clinical Medical College, Nanchang University, Nanchang, Jiangxi, China
| | - Yuhong Xiao
- The Second Clinical Medical College, Nanchang University, Nanchang, Jiangxi, China
| | - Yi Song
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, 330006 Nanchang, Jiangxi, China
| | - Jia Wang
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, 330006 Nanchang, Jiangxi, China
| | - Huihuan Yu
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, 330006 Nanchang, Jiangxi, China
| | - Ting Fang
- The Second Clinical Medical College, Nanchang University, Nanchang, Jiangxi, China
| | - Wei Xu
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, 330006 Nanchang, Jiangxi, China.
| | - Shengxun Mao
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, 330006 Nanchang, Jiangxi, China.
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Hua Q, Mi B, Huang G. The emerging co-regulatory role of long noncoding RNAs in epithelial-mesenchymal transition and the Warburg effect in aggressive tumors. Crit Rev Oncol Hematol 2018; 126:112-120. [PMID: 29759552 DOI: 10.1016/j.critrevonc.2018.03.028] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 03/03/2018] [Accepted: 03/29/2018] [Indexed: 12/12/2022] Open
Abstract
Malignant tumor cells have several unique characteristics, and their ability to undergo epithelial-mesenchymal transition (EMT) is a molecular gateway to invasive behavior. Rapid proliferation and increased invasiveness during EMT enhance aberrant glucose metabolism in tumor cells. Meanwhile, aerobic glycolysis provides energy, biosynthesis precursors, and an appropriate microenvironment to facilitate EMT. Reciprocal crosstalk between the processes synergistically contributes to malignant cancer behaviors, but the regulatory mechanisms underlying this interaction remain unclear. Long non-coding RNAs (lncRNAs) are a recently recognized class of RNAs involved in multiple physiological and pathological tumor activities. Increasing evidence indicates that lncRNAs play overlapping roles in both EMT and cancer metabolism. In this review, we describe the lncRNAs reportedly involved in the two biological processes and explore the detailed mechanisms that could help elucidate this co-regulatory network and provide a theoretical basis for clinical management of EMT-related malignant phenotypes.
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Affiliation(s)
- Qian Hua
- Department of Nuclear Medicine, Renji Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, 200127, China
| | - Baoming Mi
- Department of Nuclear Medicine, Affiliated Hospital of Jiangnan University (Wuxi 4th People's Hospital), Wuxi, Jiangsu, 214062, China
| | - Gang Huang
- Department of Nuclear Medicine, Renji Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, 200127, China.
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Toraih EA, Ellawindy A, Fala SY, Al Ageeli E, Gouda NS, Fawzy MS, Hosny S. Oncogenic long noncoding RNA MALAT1 and HCV-related hepatocellular carcinoma. Biomed Pharmacother 2018; 102:653-669. [PMID: 29604585 DOI: 10.1016/j.biopha.2018.03.105] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 03/11/2018] [Accepted: 03/17/2018] [Indexed: 02/07/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is the second leading cause of cancer-related mortality worldwide. The oncogenic function of the long non-coding RNA; metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) in HCC remains unclear. We aimed to evaluate MALAT1 serum expression profile in HCC and explore its relation to the clinicopathological features. Quantitative Real Time-Polymerase Chain Reaction was applied in 70 cohorts (30 HCC, 20 HCV, 20 controls). Further meta-analysis of clinical studies and in vitro validated experiments was employed. Serum MALAT1 showed area under the curve of 0.79 and 0.70 to distinguish patients with cancer from normal and cirrhotic individuals at fold change of 1.0 and 1.26, respectively. Expression level was significantly higher in males (P <0.001) and patients with massive ascites (P = 0.005). Correlation analysis showed positive correlation of MALAT1 with total bilirubin (r = 0.456, P <0.001) and AST (r = 0.280, P = 0.019), and negative correlation with the hemoglobin level (r = 0.312, P = 0.009). Meta-analysis showed that the over-expressed MALAT1 was linked to tumor number [Cohen's d = 0.450, 95% CI (0.21 to 0.68)], clinical stage [Cohen's d = 0.048, 95% CI (-0.83 to 0.74)], and AFP level [Cohen's d = 0.354, 95% CI (0.1 to 0.57)]. In silico data analysis and systematic review confirmed MALAT1 oncogenic function in cancer development and progression. In conclusion, circulatory MALAT1 might represent a putative non-invasive prognostic biomarker indicating worse liver failure score in HCV-related HCC patients with traditional markers. Large-scale verification is warranted in future studies.
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Affiliation(s)
- Eman A Toraih
- Genetics Unit, Department of Histology and Cell Biology, Faculty of Medicine, Suez Canal University, Ismailia, Egypt; Center of Excellence of Molecular and Cellular Medicine, Suez Canal University, Ismailia, Egypt.
| | - Alia Ellawindy
- Genetics Unit, Department of Histology and Cell Biology, Faculty of Medicine, Suez Canal University, Ismailia, Egypt
| | - Salma Y Fala
- Faculty of Medicine, Suez Canal University, Ismailia, Egypt
| | - Essam Al Ageeli
- Department of Clinical Biochemistry (Medical Genetics), Faculty of Medicine, Jazan University, Jazan, P.O. 45142, Saudi Arabia
| | - Nawal S Gouda
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Mansoura, Mansoura University, Egypt
| | - Manal S Fawzy
- Department of Medical Biochemistry, Faculty of Medicine, Suez Canal University, Ismailia, P.O. 41522, Egypt; Department of Biochemistry, Faculty of Medicine, Northern Border University, Arar, Saudi Arabia.
| | - Somaya Hosny
- Center of Excellence of Molecular and Cellular Medicine, Suez Canal University, Ismailia, Egypt; Department of Histology and Cell Biology, Faculty of Medicine, Suez Canal University, Ismailia, Egypt
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Sun XJ, Wang Q, Guo B, Liu XY, Wang B. Identification of skin-related lncRNAs as potential biomarkers that involved in Wnt pathways in keloids. Oncotarget 2018; 8:34236-34244. [PMID: 28404955 PMCID: PMC5470963 DOI: 10.18632/oncotarget.15880] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 01/24/2017] [Indexed: 12/19/2022] Open
Abstract
The long non-coding RNAs (lncRNAs) regulating encoding transcripts/genes involved in Wnt signalling pathway in keloids is largely unclear. We used a pathway-focused lncRNA microarray to detect the differentiated expression profiles of both lncRNAs and genes involved in Wnt pathway, thus a total of 116 Wnt-targeted genes and 69 Wnt-related lncRNAs aberrantly expressed in keloids were initially identified. A stepwise bioinformatics was further performed to find skin-related lncRNA/gene pairs in Wnt pathway in keloids. Firstly, an lncRNA/gene co-expression network with clustered functional modules was constructed; simultaneously, 114 Wnt-genes regarding to dermis were online enriched using Phenotype Enrichment. Secondly, 17 skin-related keloid-aberrant Wnt-genes were acquired by overlapping the 114 skin-related Wnt-genes with the 116 keloid-aberrant Wnt-genes. Thirdly, after co-expression coefficient of each lncRNA/gene profile being ranked respectively, 11 top co-expressed lncRNAs characterized with the highest co-expression coefficients to the 17 genes were identified. Fourthly, seven of the 11 top co-expressed lncRNAs exhibiting array-detected aberrant expression in keloids, together with their 12 most interactive Wnt-genes, were selected to undergo in-pair intracellularly quantitative PCR validation in keloids. As a result, four lncRNAs including CACNA1G-AS1, HOXA11-AS, LINC00312 and RP11-91I11.1 with their six paired Wnt-genes undergoing both array-and-qPCR as well as lncRNA-and-gene double validation were finally identified as skin-related lncRNA/gene pairs that involved in Wnt signalling pathway in keloids. In conclusion, in-depth exploration on these easily-accessible lncRNAs in keloids might aid to find the novel target on how to maintain highly recurrent tumours benign via Wnt-involved network regulation.
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Affiliation(s)
- Xiao-Jie Sun
- Department of Plastic and Reconstruction Surgery, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Qiang Wang
- Department of Obstetrics and Gynecology, Second Hospital of Jilin University, Changchun, China
| | - Baofeng Guo
- Department of Plastic and Reconstruction Surgery, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Xian-Ying Liu
- Department of medication, Second Hospital of Jilin University, Changchun, China
| | - Bing Wang
- Department of Plastic and Reconstruction Surgery, China-Japan Union Hospital of Jilin University, Changchun, China
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Long non-coding RNA implicated in the invasion and metastasis of head and neck cancer: possible function and mechanisms. Mol Cancer 2018; 17:14. [PMID: 29368602 PMCID: PMC5784721 DOI: 10.1186/s12943-018-0763-7] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Accepted: 01/11/2018] [Indexed: 02/05/2023] Open
Abstract
Head and neck cancer (HNC) ranks as the 6th most common malignancy across the world. Metastasis is a hallmark of cancer, primarily contributing to the relapse and poor prognosis of HNC. Recently, long noncoding RNAs (lncRNAs), previously considered as non-functional, are increasingly appreciated by scholars to play crucial roles in mediating HNC metastasis. LncRNAs, which are located in the nucleus and cytoplasm, mainly exert their function via epigenetic modification, transcriptional control and translational regulation. As several lncRNAs are presently demonstrated to participate in HNC metastasis, we make a summary of the functions and mechanisms regarding these lncRNAs. As shown in the literature, most lncRNAs appear to promote the metastasis of HNC. Hence, we primarily discuss the lncRNAs involved in enhancing metastasis. Additionally, more studies are needed to understand those lncRNAs without clear mechanisms. Furthermore, we introduced the upstream regulator for the aberrant expression of lncRNAs in HNC. Finally, we concisely addressed future research prospects of lncRNAs, particularly the interplay between lncRNAs and tumor immunity as well as lncRNA-targeted therapeutic techniques, and we introduced clustered regularly interspaced short palindromic repeats (CRISPR)-Display as a possibly transformative tool to study lncRNAs. Although lncRNA research is still in the initial stage, it holds great promise to be applied as a prognosticator of HNC and a therapeutic target to inhibit HNC metastasis, which could significantly enhance the outcome of HNC patients.
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81
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Wang ZY, Hu M, Dai MH, Xiong J, Zhang S, Wu HJ, Zhang SS, Gong ZJ. Upregulation of the long non-coding RNA AFAP1-AS1 affects the proliferation, invasion and survival of tongue squamous cell carcinoma via the Wnt/β-catenin signaling pathway. Mol Cancer 2018; 17:3. [PMID: 29310682 PMCID: PMC5757289 DOI: 10.1186/s12943-017-0752-2] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 12/26/2017] [Indexed: 02/08/2023] Open
Abstract
Background Long non-coding RNA (lncRNA) actin filament associated protein 1 antisense RNA1 (AFAP1-AS1) is oriented in an antisense direction to the protein-coding gene AFAP1 in the opposite strand. Previous studies showed that lncRNA AFAP1-AS1 was upregulated and acted as an oncogene in a variety of tumors. However, the expression and biological functions of lncRNA AFAP1-AS1 in tongue squamous cell carcinoma (TSCC) are still unknown. Methods The expression level of AFAP1-AS1 was measured in 103 pairs of human TSCC tissues and corresponding adjacent normal tongue mucous tissues. The correlation between AFAP1-AS1 and the clinicopathological features was evaluated using the chi-square test. The effects of AFAP1-AS1 on TSCC cells were determined via a CCK-8 assay, clone formation assay, flow cytometry, wound healing assay and transwell assay. Furthermore, the effect of AFAP1-AS1 knockdown on the activation of the Wnt/β-catenin signaling pathway was investigated. Finally, CAL-27 cells with AFAP1-AS1 knockdown were subcutaneously injected into nude mice to evaluate the effect of AFAP1-AS1 on tumor growth in vivo. Results In this study, we found that lncRNA AFAP1-AS1 was increased in TSCC tissues and that patients with high AFAP1-AS1 expression had a shorter overall survival. Short hairpin RNA (shRNA)-mediated AFAP1-AS1 knockdown significantly decreased the proliferation of TSCC cells. Furthermore, AFAP1-AS1 silencing partly inhibited cell migration and invasion. Inhibition of AFAP1-AS1 decreased the activity of the Wnt/β-catenin pathway and suppressed the expression of EMT-related genes (SLUG, SNAIL1, VIM, CADN, ZEB1, ZEB2, SMAD2 and TWIST1) in TSCC cells. In addition, CAL-27 cells with AFAP1-AS1 knockdown were injected into nude mice to investigate the effect of AFAP1-AS1 on tumorigenesis in vivo. Downregulation of AFAP1-AS1 suppressed tumor growth and inhibited the expression of EMT-related genes (SLUG, SNIAL1, VIM, ZEB1, NANOG, SMAD2, NESTIN and SOX2) in vivo. Conclusions Taken together, our findings present a road map for targeting the newly identified lncRNA AFAP1-AS1 to suppress TSCC progression, and these results elucidate a novel potential therapeutic strategy for TSCC.
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Affiliation(s)
- Ze-You Wang
- Department of Laboratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China
| | - Min Hu
- Department of Laboratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China
| | - Min-Hui Dai
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Jing Xiong
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Shuai Zhang
- Department of Clinical Medicine, Fujian Medical University, Fuzhou, Fujian, 350100, China.,Department of Oral and Maxillofacial Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China
| | - Han-Jiang Wu
- Department of Oral and Maxillofacial Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China
| | - Shan-Shan Zhang
- Department of Oral and Maxillofacial Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China. .,Department of Stomatology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China.
| | - Zhao-Jian Gong
- Department of Oral and Maxillofacial Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China.
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Song W, Sun Y, Lin J, Bi X. Current research on head and neck cancer-associated long noncoding RNAs. Oncotarget 2018; 9:1403-1425. [PMID: 29416703 PMCID: PMC5787447 DOI: 10.18632/oncotarget.22608] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Accepted: 09/08/2017] [Indexed: 02/06/2023] Open
Abstract
Head and neck cancers (HNC) are one of the ten leading cancers worldwide, including a range of malignant tumors arising from the upper neck. Due to the complex mechanisms of HNC and lack of effective biomarkers, the 5-year survival rate of HNC has been low and the mortality rate has been high in recent decades. Long noncoding RNAs (lncRNAs), noncoding RNAs longer than 200 bps, are a focus of current cancer research, closely related to tumor biology. LncRNAs have been revealed to be aberrantly expressed in various types of HNC, and the dysregulated lncRNAs participate in HNC progression and induce malignant behavior by modulating gene expression at diverse levels. This review will focus on the functions and molecular mechanisms of dysregulated lncRNAs in HNC tumorigenesis and progression, as well as their diagnostic, therapeutic or prognostic implications in HNC.
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Affiliation(s)
- Wei Song
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Yimin Sun
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Jie Lin
- Department of Dental Anesthesiology, West China Hospital of Stomatology, State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Xiaoqin Bi
- Department of Head and Neck Oncology, West China Hospital of Stomatology, State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, Sichuan 610041, P.R. China
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83
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Emerging role of non-coding RNA in oral cancer. Cell Signal 2018; 42:134-143. [DOI: 10.1016/j.cellsig.2017.10.009] [Citation(s) in RCA: 114] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 09/28/2017] [Accepted: 10/15/2017] [Indexed: 02/06/2023]
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Guglas K, Bogaczyńska M, Kolenda T, Ryś M, Teresiak A, Bliźniak R, Łasińska I, Mackiewicz J, Lamperska K. lncRNA in HNSCC: challenges and potential. Contemp Oncol (Pozn) 2017; 21:259-266. [PMID: 29416430 PMCID: PMC5798417 DOI: 10.5114/wo.2017.72382] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 10/27/2017] [Indexed: 01/17/2023] Open
Abstract
Head and neck squamous cell carcinoma (HNSCC) is the sixth most common cause of cancer mortality in the world. Some progress has been made in the therapy of HNSCC, however treatment remains unsatisfactory. Recent studies have shown that different types of long non-coding RNAs (lncRNAs) are dysregulated in HNSCC and correlate with tumor progression, lymph node metastasis, clinical stage and poor prognosis. lncRNAs are a class of functional RNA molecules that can not be translated into proteins but can modulate the activity of transcription factors or regulate changes in chromatin structure. The lncRNAs might have potential of biomarker in HNSCC diagnosis, prognosis, prediction and targeted treatment. In this review we describe the potential role of lncRNAs as new biomarkers and discuss their features including source of origin, extraction methods, stability, detection methods and data normalization and potential function as biomarkers in HNSCC.
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Affiliation(s)
- Kacper Guglas
- Laboratory of Cancer Genetic, Greater Poland Cancer Centre, Poznan, Poland
- Department of Cancer Immunology, Chair of Medical Biotechnology, Poznan University of Medical Sciences, Poznan, Poland
| | - Marta Bogaczyńska
- Laboratory of Cancer Genetic, Greater Poland Cancer Centre, Poznan, Poland
- HAN University of Applied Sciences, Nijmegen, Netherlands
| | - Tomasz Kolenda
- Laboratory of Cancer Genetic, Greater Poland Cancer Centre, Poznan, Poland
- Department of Cancer Immunology, Chair of Medical Biotechnology, Poznan University of Medical Sciences, Poznan, Poland
- Postgraduate School of Molecular Medicine, Medical University of Warsaw, Poland
| | - Marcel Ryś
- Laboratory of Cancer Genetic, Greater Poland Cancer Centre, Poznan, Poland
- Department of Cancer Immunology, Chair of Medical Biotechnology, Poznan University of Medical Sciences, Poznan, Poland
| | - Anna Teresiak
- Laboratory of Cancer Genetic, Greater Poland Cancer Centre, Poznan, Poland
| | - Renata Bliźniak
- Laboratory of Cancer Genetic, Greater Poland Cancer Centre, Poznan, Poland
| | - Izabela Łasińska
- Department of Medical and Experimental Oncology, Heliodor Swiecicki Clinical Hospital, Poznan University of Medical Sciences, Poland
| | - Jacek Mackiewicz
- Department of Medical and Experimental Oncology, Heliodor Swiecicki Clinical Hospital, Poznan University of Medical Sciences, Poland
- Department of Biology and Environmental Sciences, Poznan University of Medical Sciences, Poznan, Poland
- Department of Diagnostics and Cancer Immunology, Greater Poland Cancer Centre, Poznan, Poland
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Sun KK, Hu PP, Xu F. Prognostic significance of long non-coding RNA MALAT1 for predicting the recurrence and metastasis of gallbladder cancer and its effect on cell proliferation, migration, invasion, and apoptosis. J Cell Biochem 2017; 119:3099-3110. [PMID: 29058818 DOI: 10.1002/jcb.26451] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 10/17/2017] [Indexed: 12/31/2022]
Abstract
The objective of this study is to explore the role of MALAT1 as a molecular indicator in predicting the recurrence, metastasis, and prognosis of gallbladder cancer (GBC) and its effect on the proliferation, invasion, migration, and apoptosis of GBC cells in vitro. GBC tissues and adjacent normal tissues were collected from 102 patients. MALAT1 short hairpin RNA (shRNA) plasmids were first constructed to transfect the GBC-SD cells. Reverse transcription quantitative polymerase chain reaction (RT-qPCR) was applied to detect MALAT1 expression. CCK-8 assay, flow cytometry, and Transwell assay were applied to testify the cell proliferation, cell cycle, apoptosis, invasion, and migration. A receiver operating characteristic (ROC) curve was used to evaluate the values of MALAT1 in GBC recurrence, metastasis, and prognosis. COX regression analysis was applied to analyze the independent influencing factors of GBC patients' survival status. ROC curve results showed that the MALAT1 expression could be a predictor of the GBC recurrence, metastasis, and prognosis. According to the COX regression analysis, MALAT1 expression, tumor size, and TNM stage were independent influencing factors of GBC patients' survival condition. Compared with the GBC-SD cells transfected with empty plasmids, those transfected with MALAT1 shRNA plasmids showed higher apoptosis rates, weakened proliferation, migration, and invasion. In conclusion, our findings demonstrate that lncRNA MALAT1 can be considered as an indicator for evaluating the recurrence, metastasis, and prognosis of GBC patients. We also demonstrate how the overexpression of MALAT1 confers an oncogenic function in GBC.
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Affiliation(s)
- Ke-Ke Sun
- Department of Gastroenterology, Yinzhou Hospital Affiliated to Medical School of Ningbo University (Yinzhou People's Hospital), Ningbo, China
| | - Ping-Ping Hu
- Department of Gastroenterology, Yinzhou Hospital Affiliated to Medical School of Ningbo University (Yinzhou People's Hospital), Ningbo, China
| | - Feng Xu
- Department of Gastroenterology, Yinzhou Hospital Affiliated to Medical School of Ningbo University (Yinzhou People's Hospital), Ningbo, China
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86
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Niu Y, Ma F, Xue J, Huang W, Guo L. The role and potential mechanisms of long non-coding RNA in small cell lung cancer. J Thorac Dis 2017; 9:E947-E948. [PMID: 29268442 DOI: 10.21037/jtd.2017.09.70] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yuchun Niu
- Department of Oncology, The First Affiliated Hospital of Hebei North University, Zhangjiakou 075061, China
| | - Feng Ma
- Department of Oncology, The First Affiliated Hospital of Hebei North University, Zhangjiakou 075061, China
| | - Jun Xue
- Department of General Surgery, The First Affiliated Hospital of Hebei North University, Zhangjiakou 075061, China
| | - Weimei Huang
- Department of Pathology, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Linlang Guo
- Department of Pathology, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
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87
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Irimie AI, Braicu C, Sonea L, Zimta AA, Cojocneanu-Petric R, Tonchev K, Mehterov N, Diudea D, Buduru S, Berindan-Neagoe I. A Looking-Glass of Non-coding RNAs in oral cancer. Int J Mol Sci 2017; 18:ijms18122620. [PMID: 29206174 PMCID: PMC5751223 DOI: 10.3390/ijms18122620] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2017] [Revised: 11/10/2017] [Accepted: 11/17/2017] [Indexed: 12/14/2022] Open
Abstract
Oral cancer is a multifactorial pathology and is characterized by the lack of efficient treatment and accurate diagnostic tools. This is mainly due the late diagnosis; therefore, reliable biomarkers for the timely detection of the disease and patient stratification are required. Non-coding RNAs (ncRNAs) are key elements in the physiological and pathological processes of various cancers, which is also reflected in oral cancer development and progression. A better understanding of their role could give a more thorough perspective on the future treatment options for this cancer type. This review offers a glimpse into the ncRNA involvement in oral cancer, which can help the medical community tap into the world of ncRNAs and lay the ground for more powerful diagnostic, prognostic and treatment tools for oral cancer that will ultimately help build a brighter future for these patients.
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Affiliation(s)
- Alexandra Iulia Irimie
- Department of Prosthetic dentistry and Dental materials, Division Dental Propaedeutics, Aesthetic, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, 23 Marinescu Street, 40015 Cluj-Napoca, Romania.
| | - Cornelia Braicu
- Research Center for Functional Genomics and Translational Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, 23 Marinescu Street, 40015 Cluj-Napoca, Romania.
| | - Laura Sonea
- MEDFUTURE-Research Center for Advanced Medicine, University of Medicine and Pharmacy Iuliu-Hatieganu, 23 Marinescu Street, 40015 Cluj-Napoca, Romania.
| | - Alina Andreea Zimta
- MEDFUTURE-Research Center for Advanced Medicine, University of Medicine and Pharmacy Iuliu-Hatieganu, 23 Marinescu Street, 40015 Cluj-Napoca, Romania.
| | - Roxana Cojocneanu-Petric
- Research Center for Functional Genomics and Translational Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, 23 Marinescu Street, 40015 Cluj-Napoca, Romania.
| | - Konstantin Tonchev
- Department of Maxillofacial Surgery, Medical University, 3 Hristo Botev Blvd, 4002 Plovdiv, Bulgaria.
- Clinic of Maxillofacial Surgery, University Hospital "St. George", 66 Peshtersko Shosse Blvd, 4002 Plovdiv, Bulgaria.
| | - Nikolay Mehterov
- Department of Medical Biology, Medical University Plovdiv, 15-А Vasil Aprilov Bul, 4002 Plovdiv, Bulgaria.
| | - Diana Diudea
- Department of Prosthetic dentistry and Dental materials, Division Dental Propaedeutics, Aesthetic, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, 23 Marinescu Street, 40015 Cluj-Napoca, Romania.
| | - Smaranda Buduru
- Prosthetics and Dental materials, Faculty of Dental Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, 32 Clinicilor Street, 400006 Cluj-Napoca, Romania.
| | - Ioana Berindan-Neagoe
- Research Center for Functional Genomics and Translational Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, 23 Marinescu Street, 40015 Cluj-Napoca, Romania.
- MEDFUTURE-Research Center for Advanced Medicine, University of Medicine and Pharmacy Iuliu-Hatieganu, 23 Marinescu Street, 40015 Cluj-Napoca, Romania.
- Department of Functional Genomics and Experimental Pathology, The Oncology Institute "Prof. Dr. Ion Chiricuta", Republicii 34th street, 400015 Cluj-Napoca, Romania.
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88
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Song Q, Ji Q, Li Q. The role and mechanism of β‑arrestins in cancer invasion and metastasis (Review). Int J Mol Med 2017; 41:631-639. [PMID: 29207104 PMCID: PMC5752234 DOI: 10.3892/ijmm.2017.3288] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 11/22/2017] [Indexed: 01/30/2023] Open
Abstract
β-arrestins are a family of adaptor proteins that regulate the signaling and trafficking of various G protein-coupled receptors (GPCRs). They consist of β-arrestin1 and β-arrestin2 and are considered to be scaffolding proteins. β-arrestins regulate cell proliferation, promote cell invasion and migration, transmit anti-apoptotic survival signals and affect other characteristics of tumors, including tumor growth rate, angiogenesis, drug resistance, invasion and metastatic potential. It has been demonstrated that β-arrestins serve roles in various physiological and pathological processes and exhibit a similar function to GPCRs. β-arrestins serve primary roles in cancer invasion and metastasis via various signaling pathways. The present review assessed the function and mechanism of β-arrestins in cancer invasion and metastasis via multiple signaling pathways, including mitogen-activated protein kinase/extracellular signal regulated kinase, Wnt/β-catenin, nuclear factor-κB and phosphoinositide-3 kinase/Akt.
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Affiliation(s)
- Qing Song
- Department of Medical Oncology and Cancer Institute of Integrative Medicine, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, P.R. China
| | - Qing Ji
- Department of Medical Oncology and Cancer Institute of Integrative Medicine, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, P.R. China
| | - Qi Li
- Department of Medical Oncology and Cancer Institute of Integrative Medicine, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, P.R. China
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89
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Yu J, Liu Y, Gong Z, Zhang S, Guo C, Li X, Tang Y, Yang L, He Y, Wei F, Wang Y, Liao Q, Zhang W, Li X, Li Y, Li G, Xiong W, Zeng Z. Overexpression long non-coding RNA LINC00673 is associated with poor prognosis and promotes invasion and metastasis in tongue squamous cell carcinoma. Oncotarget 2017; 8:16621-16632. [PMID: 28039470 PMCID: PMC5369989 DOI: 10.18632/oncotarget.14200] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 11/21/2016] [Indexed: 12/23/2022] Open
Abstract
Long non-coding RNAs (lncRNAs) associated with the tumorigenesis of human cancers. However, the relevance of lncRNAs in tongue squamous cell carcinoma (TSCC) is still unclear. To discover novel TSCC-related lncRNAs, we analyzed the lncRNA expression patterns in two sets of TSCC gene expression profile data, and found that long intergenic non-coding RNA 673 (LINC00673) was significantly upregulated in TSCC samples. Then we examined LINC00673 expression in 202 TSCC tissue specimens, LINC00673 is highly expressed in a significant proportion of human TSCC biopsies and correlates with poor prognosis. Knockdown LINC00673 significantly inhibited the cell invasion and migration capability in TSCC cells. Our findings suggest that LINC00673 may play an essential role in TSCC progression and might serve as a potential biomarker for early detection and prognosis prediction of TSCC.
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Affiliation(s)
- Jianjun Yu
- Department of Head and Neck Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Yan Liu
- Department of Head and Neck Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute, Central South University, Changsha, Hunan, China
| | - Zhaojian Gong
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Department of Stomatolog, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Shanshan Zhang
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Can Guo
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute, Central South University, Changsha, Hunan, China
| | - Xiayu Li
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yanyan Tang
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute, Central South University, Changsha, Hunan, China
| | - Liting Yang
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute, Central South University, Changsha, Hunan, China
| | - Yi He
- Department of Head and Neck Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute, Central South University, Changsha, Hunan, China
| | - Fang Wei
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute, Central South University, Changsha, Hunan, China
| | - Yumin Wang
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Qianjin Liao
- Department of Head and Neck Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute, Central South University, Changsha, Hunan, China
| | - Wenling Zhang
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute, Central South University, Changsha, Hunan, China
| | - Xiaoling Li
- Department of Head and Neck Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yong Li
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute, Central South University, Changsha, Hunan, China.,Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Guiyuan Li
- Department of Head and Neck Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Wei Xiong
- Department of Head and Neck Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhaoyang Zeng
- Department of Head and Neck Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China
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90
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Xu Y, Jiang X, Cui Y. Upregulated long noncoding RNA PANDAR predicts an unfavorable prognosis and promotes tumorigenesis in cholangiocarcinoma. Onco Targets Ther 2017; 10:2873-2883. [PMID: 28652769 PMCID: PMC5476724 DOI: 10.2147/ott.s137044] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Cholangiocarcinoma (CCA) is one of the most malignant human cancers with increasing incidence worldwide. LncRNAs have emerged as gene regulators and prognostic biomarkers in a variety of neoplasms. PANDAR, a novel cancer-related lncRNA, has been reported to be upregulated in diverse human carcinomas. In this study, we aimed to investigate the clinical significance of lncRNA PANDAR in CCA and explore its functional roles in CCA cells including cell proliferation, apoptosis, migration, invasion and epithelial-to-mesenchymal transition (EMT). The results showed that PANDAR was significantly upregulated in CCA tissue specimens and cell lines, and its high expression was closely associated with lymph node invasion (P=0.004), TNM stage (P=0.034) and postoperative relapse (P=0.006) in patients with CCA. Thus, overexpression of PANDAR could serve as an independent prognostic biomarker of CCA. Furthermore, silencing of PANDAR followed by siRNA significantly inhibited cell proliferation and increased apoptosis in CCA cells. In addition, suppression of PANDAR impaired migration and invasion capacity in vitro partly by affecting EMT. Overall, our findings showed that lncRNA PANDAR serves as a novel prognostic biomarker and therapeutic target for CCA.
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Affiliation(s)
- Yi Xu
- Department of Hepatopancreatobiliary Surgery, Second Affiliated Hospital of Harbin Medical University.,The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Ministry of Education, Harbin, People's Republic of China
| | - Xingming Jiang
- Department of Hepatopancreatobiliary Surgery, Second Affiliated Hospital of Harbin Medical University
| | - Yunfu Cui
- Department of Hepatopancreatobiliary Surgery, Second Affiliated Hospital of Harbin Medical University
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91
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Lan K, Zhao Y, Fan Y, Ma B, Yang S, Liu Q, Linghu H, Wang H. Sulfiredoxin May Promote Cervical Cancer Metastasis via Wnt/β-Catenin Signaling Pathway. Int J Mol Sci 2017; 18:ijms18050917. [PMID: 28448437 PMCID: PMC5454830 DOI: 10.3390/ijms18050917] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2017] [Revised: 04/17/2017] [Accepted: 04/22/2017] [Indexed: 01/09/2023] Open
Abstract
The abnormal elevation of sulfiredoxin (Srx/SRXN1)-an antioxidant enzyme whose main function is to protect against oxidative stress-has been shown to be closely correlated with the progression of several types of cancer, including human cervical cancer. However, the molecular mechanism by which Srx promotes tumor progression, especially cancer metastasis in cervical cancer, has not been elucidated. Here, we show that Srx expression gradually increases during the progression of human cervical cancer and its expression level is closely correlated with lymph node metastasis. Our study also reveals a significant positive correlation between the expression of Srx and β-catenin in cervical cancer tissues. Loss-of-function studies demonstrate that Srx knockdown using a lentiviral vector-mediated specific shRNA decreases the migration and invasion capacity in HeLa (human papilloma virus 18 type cervical cancer cell line) and SiHa SiHa (cervical squamous cancer cell line). Notably, the exact opposite effects were observed in gain-of-function experiments in C-33A cells. Mechanistically, downregulation or upregulation of Srx leads to an altered expression of proteins associated with the Wnt/β-catenin signaling pathway. Furthermore, blockage of the Wnt/β-catenin signaling pathway contributed to attenuated Srx expression and resulted in significant inhibition of cell migration and invasion in cervical cancer cell lines. Combined, Srx might be an oncoprotein in cervical cancer, playing critical roles in activating the Wnt/β-catenin signaling pathway; it may therefore be a therapeutic target for cervical cancer.
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Affiliation(s)
- Kangyun Lan
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
| | - Yuni Zhao
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
| | - Yue Fan
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
| | - Binbin Ma
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
| | - Shanshan Yang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
| | - Qin Liu
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
| | - Hua Linghu
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
| | - Hui Wang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
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92
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Heery R, Finn SP, Cuffe S, Gray SG. Long Non-Coding RNAs: Key Regulators of Epithelial-Mesenchymal Transition, Tumour Drug Resistance and Cancer Stem Cells. Cancers (Basel) 2017; 9:cancers9040038. [PMID: 28430163 PMCID: PMC5406713 DOI: 10.3390/cancers9040038] [Citation(s) in RCA: 129] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 04/14/2017] [Accepted: 04/18/2017] [Indexed: 02/07/2023] Open
Abstract
Epithelial mesenchymal transition (EMT), the adoption by epithelial cells of a mesenchymal-like phenotype, is a process co-opted by carcinoma cells in order to initiate invasion and metastasis. In addition, it is becoming clear that is instrumental to both the development of drug resistance by tumour cells and in the generation and maintenance of cancer stem cells. EMT is thus a pivotal process during tumour progression and poses a major barrier to the successful treatment of cancer. Non-coding RNAs (ncRNA) often utilize epigenetic programs to regulate both gene expression and chromatin structure. One type of ncRNA, called long non-coding RNAs (lncRNAs), has become increasingly recognized as being both highly dysregulated in cancer and to play a variety of different roles in tumourigenesis. Indeed, over the last few years, lncRNAs have rapidly emerged as key regulators of EMT in cancer. In this review, we discuss the lncRNAs that have been associated with the EMT process in cancer and the variety of molecular mechanisms and signalling pathways through which they regulate EMT, and finally discuss how these EMT-regulating lncRNAs impact on both anti-cancer drug resistance and the cancer stem cell phenotype.
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Affiliation(s)
- Richard Heery
- Thoracic Oncology Research Group, Rm 2.09, Trinity Translational Medical Institute, St. James's Hospital, Dublin D08 W9RT, Ireland.
- Masters in Translational Oncology Program, Department of Surgery, Trinity College Dublin, Trinity Translational Medical Institute, St. James's Hospital, Dublin D08 W9RT, Ireland.
| | - Stephen P Finn
- Department of Histopathology & Morbid Anatomy, Trinity College Dublin, Dublin D08 RX0X, Ireland.
| | - Sinead Cuffe
- HOPE Directorate, St. James's Hospital, Dublin D08 RT2X, Ireland.
| | - Steven G Gray
- Thoracic Oncology Research Group, Rm 2.09, Trinity Translational Medical Institute, St. James's Hospital, Dublin D08 W9RT, Ireland.
- HOPE Directorate, St. James's Hospital, Dublin D08 RT2X, Ireland.
- Department of Clinical Medicine, School of Medicine, Trinity College Dublin, Dublin D02 R590, Ireland.
- Labmed Directorate, St. James's Hospital, Dublin D08 K0Y5, Ireland.
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93
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Liu C, Li G, Yang N, Su Z, Zhang S, Deng T, Ren S, Lu S, Tian Y, Liu Y, Qiu Y. miR-324-3p suppresses migration and invasion by targeting WNT2B in nasopharyngeal carcinoma. Cancer Cell Int 2017; 17:2. [PMID: 28053597 PMCID: PMC5209830 DOI: 10.1186/s12935-016-0372-8] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 12/15/2016] [Indexed: 12/29/2022] Open
Abstract
Background Nasopharyngeal carcinoma (NPC) is a malignant epithelial carcinoma of the head and neck with strong ability of invasion and metastasis. Our previous study indicated that miR-324-3p, as a tumor-suppressive factor, could regulate radioresistance of NPC cells by targeting WNT2B. The purpose of this study is to investigate the role of miR-324-3p on migration and invasion in NPC cells. Methods Quantitative real time PCR was applied to measure the expression level of miR-324-3p and WNT2B mRNA in both cells and tissues, and the expression level of WNT2B protein was determined by western blotting. The capacity of migration and invasion were tested by using wound healing and transwell invasion assay. Results Ectopic expression of miR-324-3p or silencing its target gene WNT2B could dramatically suppress migration and invasion capacity of NPC cells. Meanwhile, the alterations of miR-324-3p in NPC cells could influence the expression level of the biomarkers of epithelial-mesenchymal transition (EMT), including E-cadherin and Vimentin. Moreover, the expression of miR-324-3p was obviously downregulated and WNT2B was significantly upregulated in NPC tissues. The expression levels of miR-324-3p and WNT2B were closely correlated with T stage, clinic stage and cervical lymph node metastasis of NPC (P < 0.05). Conclusion miR-324-3p could suppress the migration and invasion of NPC by targeting WNT2B and the miR-324-3p/WNT2B pathway possibly provide new potential therapeutic clues for NPC. Electronic supplementary material The online version of this article (doi:10.1186/s12935-016-0372-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Chao Liu
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008 Hunan China.,Otolaryngology Major Disease Research Key Laboratory of Hunan Province, Changsha, 410008 Hunan China
| | - Guo Li
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008 Hunan China.,Otolaryngology Major Disease Research Key Laboratory of Hunan Province, Changsha, 410008 Hunan China
| | - Nianting Yang
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008 Hunan China.,Otolaryngology Major Disease Research Key Laboratory of Hunan Province, Changsha, 410008 Hunan China
| | - Zhongwu Su
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008 Hunan China.,Otolaryngology Major Disease Research Key Laboratory of Hunan Province, Changsha, 410008 Hunan China
| | - Shuiting Zhang
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008 Hunan China.,Otolaryngology Major Disease Research Key Laboratory of Hunan Province, Changsha, 410008 Hunan China
| | - Tengbo Deng
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008 Hunan China.,Otolaryngology Major Disease Research Key Laboratory of Hunan Province, Changsha, 410008 Hunan China
| | - Shuling Ren
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008 Hunan China.,Otolaryngology Major Disease Research Key Laboratory of Hunan Province, Changsha, 410008 Hunan China
| | - Shanhong Lu
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008 Hunan China.,Otolaryngology Major Disease Research Key Laboratory of Hunan Province, Changsha, 410008 Hunan China
| | - Yongquan Tian
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008 Hunan China.,Otolaryngology Major Disease Research Key Laboratory of Hunan Province, Changsha, 410008 Hunan China
| | - Yong Liu
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008 Hunan China.,Otolaryngology Major Disease Research Key Laboratory of Hunan Province, Changsha, 410008 Hunan China
| | - Yuanzheng Qiu
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008 Hunan China.,Otolaryngology Major Disease Research Key Laboratory of Hunan Province, Changsha, 410008 Hunan China
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94
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The emerging role of long noncoding RNAs in oral cancer. Oral Surg Oral Med Oral Pathol Oral Radiol 2016; 123:235-241. [PMID: 27989708 DOI: 10.1016/j.oooo.2016.10.006] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 09/12/2016] [Accepted: 10/04/2016] [Indexed: 01/01/2023]
Abstract
Although less than 3% of the genome encodes proteins, at least 75% of the genome is transcribed into RNAs with no protein-coding potential (noncoding RNAs [ncRNAs]). On the basis of their size and the arbitrary 200 nucleotides cutoff, ncRNAs are classified into long ncRNAs (lncRNAs) or small ncRNAs (including microRNAs). Over the last few years, the role of microRNAs in oral squamous cells carcinoma (OSCC) has been extensively addressed, but the possible role of lncRNAs in OSCC remains unclear. We aimed to explore and discuss the potential role of lncRNAs in OSCC. The detection of lncRNAs in saliva holds promise not only as a noninvasive diagnostic tool in OSCC but also in the early detection of oral cancer recurrence. lncRNAs are promising future therapeutic targets in the OSCC scenario, and research in this field may expand greatly in the next decade.
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The high expression of long non-coding RNA PANDAR indicates a poor prognosis for colorectal cancer and promotes metastasis by EMT pathway. J Cancer Res Clin Oncol 2016; 143:71-81. [PMID: 27629879 DOI: 10.1007/s00432-016-2252-y] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Accepted: 08/31/2016] [Indexed: 12/14/2022]
Abstract
BACKGROUND Long non-coding RNAs (lncRNAs) have been shown to have crucial regulatory roles in human cancer biology. LncRNA PANDAR is a novel identified lncRNA that was previously reported to be increased in various cancers; however, its effect in colorectal cancer (CRC) remains unknown. The aim of this study was to explore the expression and role of lncRNA PANDAR in CRC. METHODS The expression of lncRNA PANDAR was examined in CRC samples and cell lines by qRT-PCR. Kaplan-Meier survival analysis and univariate and multivariate Cox proportional hazards model were performed to evaluate the clinical and prognostic significance of lncRNA PANDAR in CRC patients. Furthermore, the biological function of lncRNA PANDAR on tumor cell growth, apoptosis and mobility was investigated through CCK-8, soft agar colony formation, flow cytometry, transwell migration and invasion assays in vitro. The potential mechanism of lncRNA PANDAR was demonstrated by Western blot and qRT-PCR. RESULTS The expression level of PANDAR was higher in CRC tissues and cells compared to adjacent non-tumor tissues and normal colonic epithelial cells. Patients with high PANDAR expression level had poorer overall survival than those with low PANDAR expression. Moreover, multivariate analysis showed that the status of PANDAR expression was an independent prognostic indicator for CRC. Knockdown of PANDAR could inhibit cell growth, migration and invasion, arrest cell cycle as well as induce apoptosis of CRC cells in vitro study. In addition, PANDAR could affect epithelial-mesenchymal transition through inhibiting N-cadherin, vimentin, β-catenin, Snail and Twist expression and increasing the expression levels of E-cadherin. CONCLUSION Our data suggested that lncRNA PANDAR was a novel molecule involved in CRC progression, which provided a potential prognostic biomarker and therapeutic target for new therapies in patients with CRC.
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