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Wen H, Liu XB, Zhu ZD, Jin S, Gao YJ, Tong Q, Li SB. TET2 Is Downregulated in Early Esophageal Squamous Cell Carcinoma and Promotes Esophageal Squamous Cell Malignant Behaviors. Dig Dis Sci 2024; 69:2462-2476. [PMID: 38653944 DOI: 10.1007/s10620-024-08311-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 01/22/2024] [Indexed: 04/25/2024]
Abstract
OBJECTIVE To explore the expression of the ten eleven translocation (TET) 2 protein in early esophageal squamous cell carcinoma (EESCC), precancerous lesions, and cell lines and to evaluate the effect of TET2 on the functional behavior of EC109 esophageal cancer cells. METHODS Thirty-one samples of EESCC and precancerous lesions collected via endoscopic submucosal dissection at Taihe Hospital, Shiyan, from February 1, 2017, to February 1, 2019, were analyzed. The study involved evaluating TET2 expression levels in lesion tissue and adjacent normal epithelium, correlating these with clinical pathological features. Techniques including 3-(4,5-dimethythiazol-2-yl)-2,5-diphenyl tetrazolium bromide, cell scratch assays, flow cytometry for propidium iodide (PI) staining, Hoechst 333258/PI double staining, and nude mouse tumorigenesis experiments were employed to assess the effect of TET2 on the proliferation, migration, cell cycle, apoptosis, and tumorigenic ability of esophageal cancer cells. RESULTS TET2 expression was notably reduced in early esophageal cancer tissue and correlated with tumor invasion depth (P < 0.05). Overexpression of TET2 enhanced the proliferation and migration of esophageal cancer cells, increased the cell population in the G0 phase, decreased it in the S phase, and intensified cell necrosis (P < 0.05). There was a partial increase in tumorigenic ability (P = 0.087). CONCLUSION TET2 downregulation in ESCC potentially influences the necrosis, cell cycle, and tumorigenic ability of esophageal cancer cells, suggesting a role in the onset and progression of esophageal cancer.
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Affiliation(s)
- Hui Wen
- Department of Gastroenterology, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, People's Republic of China
- Department of Gastroenterology, Hubei Provincial Clinical Research Center for Precision Diagnosis and Treatment of Liver Cancer, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, People's Republic of China
| | - Xiao-Bo Liu
- Department of Gastroenterology, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, People's Republic of China
- Department of Gastroenterology, Hubei Provincial Clinical Research Center for Precision Diagnosis and Treatment of Liver Cancer, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, People's Republic of China
| | - Zhao-di Zhu
- Department of Gastroenterology, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, People's Republic of China
| | - Shu Jin
- Department of Gastroenterology, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, People's Republic of China
| | - Yuan-Jun Gao
- Department of Gastroenterology, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, People's Republic of China
| | - Qiang Tong
- Department of Gastroenterology, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, People's Republic of China
| | - Sheng-Bao Li
- Department of Gastroenterology, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, People's Republic of China.
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Asadi-Tarani M, Darashti A, Javadi M, Rezaei M, Saravani M, Salimi S. The effects of ANRIL polymorphisms on colorectal cancer, tumor stage, and tumor grade among Iranian population. Mol Biol Rep 2024; 51:486. [PMID: 38578390 DOI: 10.1007/s11033-024-09420-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 03/05/2024] [Indexed: 04/06/2024]
Abstract
BACKGROUND Colorectal cancer (CRC) is a type of neoplasm, developing in the colon or rectum. The exact etiology of CRC is not well known, but the role of genetic, epigenetic, and environmental factors are established in its pathogenesis. Therefore, the aim of this research was to explore the effects of ANRIL polymorphisms on the CRC and its clinical findings. METHODS AND RESULTS The peripheral blood specimens were collected from 142 CRC patients and 225 controls referred to Milad Hospital, Tehran, Iran. PCR- RFLP method was used to analyze ANRIL rs1333040, rs10757274 rs4977574, and rs1333048 polymorphisms. The ANRIL rs1333040 polymorphism was related to a higher risk of CRC in the co-dominant, dominant, and log-additive models. ANRIL rs10757274, rs4977574, and rs1333048 polymorphisms showed no effect on CRC susceptibility. The CGAA and TGGA haplotypes of ANRIL rs1333040/ rs10757274/ rs4977574/rs1333048 polymorphisms were associated with the higher and the lower risk of CRC respectively. The rs1333040 polymorphism was associated with higher TNM stages (III and IV). The frequency of ANRIL rs10757274 polymorphism was lower in CRC patients over 50 years of age only in the dominant model. In addition, the rs10757274 was associated with well differentiation in CRC patients. CONCLUSION The ANRIL rs1333040 polymorphism was associated with a higher risk of CRC and higher TNM stages. ANRIL rs10757274 polymorphism was associated with the well-differentiated tumor in CRC.
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Affiliation(s)
- Mina Asadi-Tarani
- Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | | | | | - Mahnaz Rezaei
- Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
- Cellular and Molecular Research Center, Resistant Tuberculosis Institute, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Mohsen Saravani
- Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
- Cellular and Molecular Research Center, Resistant Tuberculosis Institute, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Saeedeh Salimi
- Cellular and Molecular Research Center, Resistant Tuberculosis Institute, Zahedan University of Medical Sciences, Zahedan, Iran.
- Department of Clinical Biochemistry, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Kuang L, Zhang J, Li Y, Wang Q, Liu J, Zhang B. Association of tet methylcytosine dioxygenase 2 and 5-hydroxymethylcytosine in endometrioid adenocarcinoma and its clinical significance. BMC Womens Health 2024; 24:188. [PMID: 38515066 PMCID: PMC10956261 DOI: 10.1186/s12905-024-03021-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 03/13/2024] [Indexed: 03/23/2024] Open
Abstract
BACKGROUND Aberrant DNA methylation is a vital molecular alteration commonly detected in type I endometrial cancers (EC), and tet methylcytosine dioxygenase 2 (TET2) and 5-hydroxymethylcytosine (5hmC) play significant roles in DNA demethylation. However, little is known about the function and correlation of TET2 and 5hmC co-expressed in EC. This study intended to investigate the clinical significance of TET2 and 5hmC in EC. METHODS The levels of TET2 and 5hmC were detected in 326 endometrial tissues by immumohistochemistry, and the correlation of their level was detected by Pearson analysis. The association between the levels of TET2 and 5hmC and clinicopathologic characteristics was analyzed. Prognostic value of TET2 and 5hmC was explored by Kaplan-Meier analysis. The Cox proportional hazard regression model was used for univariate and multivariate analyses. RESULTS Based on the analysis results, TET2 protein level was positively correlated with 5hmC level in EC tissues (r = 0.801, P < 0.001). TET2+5hmC+ (high TET2 and high 5hmC) association was significantly associated with well differentiation, myometrial invasion, negative lymph node metastasis, and tumor stage in EC. Association of TET2 and 5hmC was confirmed as a prognostic factor (HR = 2.843, 95%CI = 1.226-3.605, P = 0.007) for EC patients, and EC patients with TET2-5hmC- level had poor overall survival. CONCLUSIONS In summary, the association of TET2 and 5hmC was downregulated in EC tissues, and may be a potential poor prognostic indicator for EC patients. Combined detection of TET2 and 5hmC may be valuable for the diagnosis and prognosis of EC.
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Affiliation(s)
- Lei Kuang
- Department of Obstetrics and Gynecology, Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical University, No. 199 South Jiefang Road, Xuzhou, 221009, China
| | - Jingbo Zhang
- Department of Obstetrics and Gynecology, Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical University, No. 199 South Jiefang Road, Xuzhou, 221009, China
| | - Yanyu Li
- Department of Obstetrics and Gynecology, Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical University, No. 199 South Jiefang Road, Xuzhou, 221009, China
| | - Qing Wang
- Department of Obstetrics and Gynecology, Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical University, No. 199 South Jiefang Road, Xuzhou, 221009, China
| | - Jianwei Liu
- Department of Obstetrics and Gynecology, Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical University, No. 199 South Jiefang Road, Xuzhou, 221009, China
| | - Bei Zhang
- Department of Obstetrics and Gynecology, Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical University, No. 199 South Jiefang Road, Xuzhou, 221009, China.
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Li X, Li Z, Gao Q, Peng Y, Yu Y, Hu T, Wang W. Correlation of DNA methylation of DNMT3A and TET2 with oral squamous cell carcinoma. Discov Oncol 2024; 15:15. [PMID: 38246976 PMCID: PMC10800327 DOI: 10.1007/s12672-024-00866-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Accepted: 01/15/2024] [Indexed: 01/23/2024] Open
Abstract
Oral squamous cell carcinoma (OSCC) is the sixth most common malignancy worldwide. Abnormal epigenetic modifications, including DNA methylation, are hallmarks of cancer and implicated in the development of various tumors. DNA methylation is catalyzed by the DNA methyltransferase and ten-eleven translocation dioxygenase families, with DNMT3A and TET2 being the most widely studied members, respectively. The correlation of methylation β values and clinical features was conducted in patients with OSCC in The Cancer Genome Atlas database. DNA methylation and protein expression levels of DNMT3A and TET2 in tissues were analyzed with methylation-specific polymerase chain reaction (MSP) and western blotting. To evaluate the effects of DNMT3A and TET2 on the biological characteristics of OSCC, cell proliferation was assessed with 5-ethynyl-2'-deoxyuridine, and cell migration capacity was quantified with wound healing and transwell assays. A survival analysis was performed with the Kaplan-Meier approach. The correlation between different methylation β values and clinical features was revealed. MSP revealed varying methylation degrees of DNMT3A and TET2 in OSCC tissues. Furthermore, western blotting showed that the protein expression levels were significantly different in cancer and surrounding healthy tissue samples. In vitro experiments demonstrated that DNMT3A knockdown and TET2 overexpression could inhibit the proliferation and migration of OSCC. Survival analysis revealed that patients with high DNMT3A methylation levels showed higher survival rates.
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Affiliation(s)
- Xueming Li
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Zaikun Li
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Qingxi Gao
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Yanan Peng
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Yang Yu
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Tenglong Hu
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Wei Wang
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China.
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Lu J, Gu B, Lu W, Liu J, Lu J. Lnc-ANRIL modulates the immune response associated with NF-κB pathway in LPS-stimulated bovine mammary epithelial cells. Immun Inflamm Dis 2023; 11:e1125. [PMID: 38156382 PMCID: PMC10740337 DOI: 10.1002/iid3.1125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 11/18/2023] [Accepted: 12/05/2023] [Indexed: 12/30/2023] Open
Abstract
BACKGROUND The antisense noncoding RNA in the INK4 locus (ANRIL) has been confirmed related to multiple disease progression, but the role and exact mechanisms of lnc-ANRIL in lipopolysaccharide (LPS)-induced inflammation of bovine mammary epithelial cells (MAC-T) remain unclear. AIMS This manuscript focused on expounding the functional role of lnc-ANRIL through experiments performed in MAC-T. METHODS At the in vitro level, we established a Bovine mammary epithelial cell (BMEC) cell model of mastitis by LPS treatment. Transfection of siRNA was examined by immunofluorescence localization and RT-qPCR. CCK8, clonogenic assay and EdU were used to detect the proliferation ability of the cells. Cell cycle and apoptosis were detected by flow cytometry and Western blot. The levels of inflammatory factors and oxidative stress markers were detected by ELISA kits. RESULTS Cell Counting Kit-8, colony formation, and 5-ethynyl-20-deoxyuridine were adopted and the data illustrated that LPS could significantly suppress the cell proliferation, while knockdown of lnc-ANRIL expression obviously promoted MAC-T cell proliferation compared with LPS or LPS + si-NC group. Flow cytometry analysis demonstrated that lnc-ANRIL could induce MAC-T cell apoptosis. In addition, downregulation of lnc-ANRIL affected LPS-induced immune response by regulating inflammatory factor expressions and modulating the nuclear factor kappa B (NF-κB) axis in MAC-T cells. CONCLUSION Our results suggest that lnc-ANRIL is involved in the regulation of cell proliferation, cell cycle, and cell apoptosis of MAC-T cells, and plays an important role in the inflammatory and immune response of MAC-T cells through the regulation of the NF-κB pathway, proposing new therapeutic strategies for the treatment of innate immune response-related disease such as bovine mastitis.
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Affiliation(s)
- Jinye Lu
- College of Pet TechnologyJiangsu Agri‐Animal Husbandry Vocational CollegeTaizhouChina
| | - Beibei Gu
- Integrated Technical Service CenterTaizhou CustomsTaizhouChina
| | - Wei Lu
- College of Pet TechnologyJiangsu Agri‐Animal Husbandry Vocational CollegeTaizhouChina
| | - Jing Liu
- College of Pet TechnologyJiangsu Agri‐Animal Husbandry Vocational CollegeTaizhouChina
| | - Jiang Lu
- College of Pet TechnologyJiangsu Agri‐Animal Husbandry Vocational CollegeTaizhouChina
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Rubatto M, Borriello S, Sciamarrelli N, Pala V, Tonella L, Ribero S, Quaglino P. Exploring the role of epigenetic alterations and non-coding RNAs in melanoma pathogenesis and therapeutic strategies. Melanoma Res 2023; 33:462-474. [PMID: 37788101 DOI: 10.1097/cmr.0000000000000926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Melanoma is a rare but highly lethal type of skin cancer whose incidence is increasing globally. Melanoma is characterized by high resistance to therapy and relapse. Despite significant advances in the treatment of metastatic melanoma, many patients experience progression due to resistance mechanisms. Epigenetic changes, including alterations in chromatin remodeling, DNA methylation, histone modifications, and non-coding RNA rearrangements, contribute to neoplastic transformation, metastasis, and drug resistance in melanoma. This review summarizes current research on epigenetic mechanisms in melanoma and their therapeutic potential. Specifically, we discuss the role of histone acetylation and methylation in gene expression regulation and melanoma pathobiology, as well as the promising results of HDAC inhibitors and DNMT inhibitors in clinical trials. We also examine the dysregulation of non-coding RNA, particularly miRNAs, and their potential as targets for melanoma therapy. Finally, we highlight the challenges of epigenetic therapies, such as the complexity of epigenetic mechanisms combined with immunotherapies and the need for combination therapies to overcome drug resistance. In conclusion, epigenetic changes may be reversible, and the use of combination therapy between traditional therapies and epigenetically targeted drugs could be a viable solution to reverse the increasing number of patients who develop treatment resistance or even prevent it. While several clinical trials are underway, the complexity of these mechanisms presents a significant challenge to the development of effective therapies. Further research is needed to fully understand the role of epigenetic mechanisms in melanoma and to develop more effective and targeted therapies.
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Affiliation(s)
- Marco Rubatto
- Department of Medical Sciences, Dermatologic Clinic, University of Turin Medical School, Turin, Italy
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Sanchez A, Lhuillier J, Grosjean G, Ayadi L, Maenner S. The Long Non-Coding RNA ANRIL in Cancers. Cancers (Basel) 2023; 15:4160. [PMID: 37627188 PMCID: PMC10453084 DOI: 10.3390/cancers15164160] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 08/14/2023] [Accepted: 08/15/2023] [Indexed: 08/27/2023] Open
Abstract
ANRIL (Antisense Noncoding RNA in the INK4 Locus), a long non-coding RNA encoded in the human chromosome 9p21 region, is a critical factor for regulating gene expression by interacting with multiple proteins and miRNAs. It has been found to play important roles in various cellular processes, including cell cycle control and proliferation. Dysregulation of ANRIL has been associated with several diseases like cancers and cardiovascular diseases, for instance. Understanding the oncogenic role of ANRIL and its potential as a diagnostic and prognostic biomarker in cancer is crucial. This review provides insights into the regulatory mechanisms and oncogenic significance of the 9p21 locus and ANRIL in cancer.
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Affiliation(s)
| | | | | | - Lilia Ayadi
- CNRS, Université de Lorraine, IMoPA, F-54000 Nancy, France
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Farag CM, Johnston EK, Antar RM, Issa SG, Gadiwalla Q, Tariq Z, Kim SA, Whalen MJ. Unveiling the genomic landscape of possible metastatic malignant transformation of teratoma secondary to cisplatin-chemotherapy: a Tempus gene analysis-based case report literature review. Front Oncol 2023; 13:1192843. [PMID: 37427132 PMCID: PMC10324607 DOI: 10.3389/fonc.2023.1192843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 05/30/2023] [Indexed: 07/11/2023] Open
Abstract
In this case report, we describe a patient who developed metastatic liver cancer of unknown primary origin one year following the surgical removal of a retroperitoneal adenocarcinoma. The retroperitoneal adenocarcinoma is considered a malignant transformation of teratoma (MTT), given the patient's distant history of testicular tumor excised 25 years prior and treated with chemotherapy. Despite no primary tumor being identified, the leading primary hypothesis is that the liver metastasis stemmed from the resected retroperitoneal adenocarcinoma from one year prior. We theorize that the patient's cisplatin-based chemotherapy 25 years ago may have triggered the MTT, as documented in the existing literature. Using TEMPUS gene testing on both the retroperitoneal adenocarcinoma and the recently discovered liver metastasis, we identified several genes with variants of unknown significance (VUS) that could potentially be linked to cisplatin chemotherapy resistance. While we cannot conclude that this patient definitively underwent MTT, it remains the most plausible explanation. Future research should investigate both the validity of the genes we have uncovered with respect to cisplatin resistance, as well as other genes associated with cisplatin resistance to further understand the pathogenesis of cisplatin resistance for better prediction of treatment response. As the world of medicine shifts towards individualized therapies and precision medicine, reporting and analyzing genetic mutations derived from tumors remains imperative. Our case report aims to contribute to the growing database of defined mutations and underscores the immense potential of genetic analysis in directing personalized treatment options.
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Affiliation(s)
- Christian M. Farag
- Department of Medicine, George Washington University School of Medicine, Washington, DC, United States
| | - Elena K. Johnston
- Department of Medicine, George Washington University School of Medicine, Washington, DC, United States
| | - Ryan M. Antar
- Department of Urology, George Washington University School of Medicine, Washington, DC, United States
| | - Shaher G. Issa
- Department of Medicine, George Washington University School of Medicine, Washington, DC, United States
| | - Qasim Gadiwalla
- Department of Surgery, George Washington University School of Medicine, Washington, DC, United States
| | - Zoon Tariq
- Department of Pathology, George Washington University School of Medicine and Health Sciences, Washington, DC, United States
| | - Sun A. Kim
- Department of Pathology, George Washington University School of Medicine and Health Sciences, Washington, DC, United States
| | - Michael J. Whalen
- Department of Urology, George Washington University School of Medicine, Washington, DC, United States
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Huang J, Yuan W, Chen B, Li G, Chen X. LncRNA ELFN1-AS1 upregulates TRIM29 by suppressing miR-211-3p to promote gastric cancer progression. Acta Biochim Biophys Sin (Shanghai) 2023; 55:484-497. [PMID: 36876422 PMCID: PMC10160233 DOI: 10.3724/abbs.2023023] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023] Open
Abstract
Long noncoding RNA (lncRNA) extracellular leucine rich repeat and fibronectin type III domain containing 1-antisense RNA 1 (ELFN1-AS1) has been found to be upregulated in various tumors. However, the biological functions of ELFN1-AS1 in gastric cancer (GC) are not entirely understood. In the present study, the expression levels of ELFN1-AS1, miR-211-3p, and TRIM29 are determined using reverse transcription-quantitative PCR. Subsequently, CCK8, EdU, and colony formation assays are performed to determine GC cell vitality. The migratory and invasive capabilities of GC cells are further evaluated using transwell invasion and cell scratch assays. Western blot analysis is performed to quantify the levels of proteins associated with GC cell apoptosis and epithelialmesenchymal transition (EMT). The competing endogenous RNA (ceRNA) activity of ELFN1-AS1 on TRIM29 through miR-211-3p is confirmed by pull-down, RIP, and luciferase reporter assays. Our study proves that ELFN1-AS1 and TRIM29 are highly expressed in GC tissues. ELFN1-AS1 silencing inhibits GC cell proliferation, migration, invasion and EMT, and induces cell apoptosis. Rescue experiments reveal that the oncogenicity of ELFN1-AS1 is modulated by acting as a sponge for miR-211-3p, thereby increasing the expression of the target gene of miR-211-3p, TRIM29. In summary, ELFN1-AS1 maintains GC cell tumorigenicity via the ELFN1-AS1/miR-211-3p/TRIM29 axis, indicating that this axis can be directed for GC treatment in the future.
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Affiliation(s)
- Jinxi Huang
- Department of General Surgery, the Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - Weiwei Yuan
- Department of General Surgery, the Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - Beibei Chen
- Department of Oncology, the Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - Gaofeng Li
- Department of General Surgery, the Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - Xiaobing Chen
- Department of Oncology, the Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou 450003, China
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Cusenza VY, Tameni A, Neri A, Frazzi R. The lncRNA epigenetics: The significance of m6A and m5C lncRNA modifications in cancer. Front Oncol 2023; 13:1063636. [PMID: 36969033 PMCID: PMC10033960 DOI: 10.3389/fonc.2023.1063636] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 02/10/2023] [Indexed: 03/12/2023] Open
Abstract
Most of our transcribed RNAs are represented by non-coding sequences. Long non-coding RNAs (lncRNAs) are transcripts with no or very limited protein coding ability and a length >200nt. They can be epigenetically modified. N6-methyladenosine (m6A), N1-methyladenosine (m1A), 5-methylcytosine (m5C), 7-methylguanosine (m7G) and 2’-O-methylation (Nm) are some of the lncRNAs epigenetic modifications. The epigenetic modifications of RNA are controlled by three classes of enzymes, each playing a role in a specific phase of the modification. These enzymes are defined as “writers”, “readers” and “erasers”. m6A and m5C are the most studied epigenetic modifications in RNA. These modifications alter the structure and properties, thus modulating the functions and interactions of lncRNAs. The aberrant expression of several lncRNAs is linked to the development of a variety of cancers and the epigenetic signatures of m6A- or m5C-related lncRNAs are increasingly recognized as potential biomarkers of prognosis, predictors of disease stage and overall survival. In the present manuscript, the most up to date literature is reviewed with the focus on m6A and m5C modifications of lncRNAs and their significance in cancer.
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Affiliation(s)
- Vincenza Ylenia Cusenza
- Laboratory of Translational Research, Azienda Unità Sanitaria Locale - IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Annalisa Tameni
- Laboratory of Translational Research, Azienda Unità Sanitaria Locale - IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Antonino Neri
- Scientific Directorate, Azienda Unità Sanitaria Locale - IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Raffaele Frazzi
- Scientific Directorate, Azienda Unità Sanitaria Locale - IRCCS di Reggio Emilia, Reggio Emilia, Italy
- *Correspondence: Raffaele Frazzi,
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Li N, Zeng A, Wang Q, Chen M, Zhu S, Song L. Regulatory function of DNA methylation mediated lncRNAs in gastric cancer. Cancer Cell Int 2022; 22:227. [PMID: 35810299 PMCID: PMC9270757 DOI: 10.1186/s12935-022-02648-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 06/28/2022] [Indexed: 12/31/2022] Open
Abstract
As one of the most common malignancies worldwide, gastric cancer contributes to cancer death with a high mortality rate partly responsible for its out-of-control progression as well as limited diagnosis. DNA methylation, one of the epigenetic events, plays an essential role in the carcinogenesis of many cancers, including gastric cancer. Long non-coding RNAs have emerged as the significant factors in the cancer progression functioned as the oncogene genes, the suppressor genes and regulators of signaling pathways over the decade. Intriguingly, increasing reports, recently, have claimed that abnormal DNA methylation regulates the expression of lncRNAs as tumor suppressor genes in gastric cancer and lncRNAs as regulators could exert the critical influence on tumor progression through acting on DNA methylation of other cancer-related genes. In this review, we summarized the DNA methylation-associated lncRNAs in gastric cancer which play a large impact on tumor progression, such as proliferation, invasion, metastasis and so on. Furthermore, the underlying molecular mechanism and signaling pathway might be developed as key points of gastric cancer range from diagnosis to prognosis and treatment in the future.
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Affiliation(s)
- Nan Li
- School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, People's Republic of China
| | - Anqi Zeng
- Institute of Translational Pharmacology and Clinical Application, Sichuan Academy of Chinese Medical Science, Chengdu, Sichuan, 610041, People's Republic of China
| | - Qian Wang
- School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, People's Republic of China
| | - Maohua Chen
- School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, People's Republic of China
| | - Shaomi Zhu
- School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, People's Republic of China.
| | - Linjiang Song
- School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, People's Republic of China.
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Bencivenga D, Stampone E, Vastante A, Barahmeh M, Della Ragione F, Borriello A. An Unanticipated Modulation of Cyclin-Dependent Kinase Inhibitors: The Role of Long Non-Coding RNAs. Cells 2022; 11:cells11081346. [PMID: 35456025 PMCID: PMC9028986 DOI: 10.3390/cells11081346] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 04/08/2022] [Accepted: 04/11/2022] [Indexed: 12/13/2022] Open
Abstract
It is now definitively established that a large part of the human genome is transcribed. However, only a scarce percentage of the transcriptome (about 1.2%) consists of RNAs that are translated into proteins, while the large majority of transcripts include a variety of RNA families with different dimensions and functions. Within this heterogeneous RNA world, a significant fraction consists of sequences with a length of more than 200 bases that form the so-called long non-coding RNA family. The functions of long non-coding RNAs range from the regulation of gene transcription to the changes in DNA topology and nucleosome modification and structural organization, to paraspeckle formation and cellular organelles maturation. This review is focused on the role of long non-coding RNAs as regulators of cyclin-dependent kinase inhibitors’ (CDKIs) levels and activities. Cyclin-dependent kinases are enzymes necessary for the tuned progression of the cell division cycle. The control of their activity takes place at various levels. Among these, interaction with CDKIs is a vital mechanism. Through CDKI modulation, long non-coding RNAs implement control over cellular physiology and are associated with numerous pathologies. However, although there are robust data in the literature, the role of long non-coding RNAs in the modulation of CDKIs appears to still be underestimated, as well as their importance in cell proliferation control.
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Wan F, Chen F, Fan Y, Chen D. Clinical Significance of TET2 in Female Cancers. Front Bioeng Biotechnol 2022; 10:790605. [PMID: 35223782 PMCID: PMC8874273 DOI: 10.3389/fbioe.2022.790605] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 01/05/2022] [Indexed: 12/29/2022] Open
Abstract
Female cancers refer to malignant tumors of the female reproductive system and breasts, which severely affect the physical and mental health of women. Although emerging experiment-based studies have indicated a potential correlation between ten-eleven translocation methylcytosine dioxygenase (TET2) and female cancers, no comprehensive studies have been conducted. Therefore, this study aimed to summarize the clinical value and underlying oncogenic functions of TET2 in female cancers, such as breast invasive carcinoma (BRCA), cervical squamous cell carcinoma and endocervical adenocarcinoma (CESC), ovarian serous cystadenocarcinoma (OV), uterine corpus endometrial carcinoma (UCEC), and uterine carcinosarcoma (UCS), based on the data obtained from The Cancer Genome Atlas. The expression of TET2 was decreased in most female cancers, and its high expression was distinctly associated with the favorable prognosis of most female cancers. Furthermore, CD8+ T-cell infiltration was not correlated with TET2 in OV, UCEC, and UCS, whereas tumor-associated fibroblast infiltration was significantly correlated with TET2 in BRCA, CESC, and OV. TET2 was co-expressed with the immune checkpoint molecules ADORA2A, CD160, CD200, CD200R1, CD44, CD80, NRP1 TNFSF4, and TNFSF15 in most female cancers. Enrichment analysis revealed that some signaling pathways involving TET2 and related genes were related to tumorigenesis. Immunohistochemical and immunofluorescence staining confirmed the results of cancer immune infiltration analysis in BRCA tissues. Therefore, this study provides evidence for the oncogenic functions and clinical value of TET2 in female cancers.
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14
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Sun J, Qiu S. Expression of lncRNA-ANRIL before and after Treatment and Its Predictive Value for Short-Term Survival in Patients with Coronary Heart Disease. BIOMED RESEARCH INTERNATIONAL 2021; 2021:5431985. [PMID: 34901274 PMCID: PMC8664524 DOI: 10.1155/2021/5431985] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 10/29/2021] [Accepted: 11/10/2021] [Indexed: 11/17/2022]
Abstract
This study aimed at observing the expression of lncRNA-ANRIL (ANRIL) before and after treatment and its predictive value for short-term survival in patients with coronary heart disease (CHD). Altogether, 112 patients with CHD admitted to the hospital were enrolled as a study group (SG), which was divided into a pretreatment study group (preSG) and a posttreatment study group (postSG). Further 72 healthy people undergoing physical examinations during the same period were enrolled as a control group (CG). Peripheral blood was collected from the subjects in the three groups, to detect the expression level of serum ANRIL using quantitative reverse transcription PCR (qRT-PCR). A receiver operating characteristic (ROC) curve was plotted to evaluate the diagnostic value of ANRIL for CHD. Kaplan-Meier survival curves were plotted to analyze 3-year survival rates in high- and low-ANRIL expression groups. Cox regression was conducted to analyze independent risk factors affecting the patients. The expression level of serum ANRIL in preSG was significantly lower than those in CG and postSG (P < 0.05). According to the ROC curve, the area under the curve (AUC) of serum ANRIL for diagnosing CHD in CG was 0.894 and the optimal cutoff value was 0.639, with the sensitivity of 86.61% and the specificity of 93.67%. According to the survival curves, the 3-year overall survival rate in the high-ANRIL expression group was significantly lower than that in the low-expression group (P < 0.05). History of smoking, high total cholesterol (TC), high triglyceride (TG), high homocysteine (Hcy), and ANRIL expression were independent prognostic factors affecting the overall survival time of the patients (P < 0.05). ANRIL is poorly expressed in the peripheral blood of patients with CHD. Its detection has good sensitivity and specificity for diagnosing the disease, and its expression may be related to the poor prognosis of the patients.
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Affiliation(s)
- Jinhui Sun
- Department of Cardiovascular Surgery, The Second Hospital of Shandong University, Jinan 250000, China
| | - Shi Qiu
- Department of Cardiovascular Surgery, The Second Hospital of Shandong University, Jinan 250000, China
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15
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De Martino M, Esposito F, Pallante P. Long non-coding RNAs regulating multiple proliferative pathways in cancer cell. Transl Cancer Res 2021; 10:3140-3157. [PMID: 35116622 PMCID: PMC8797882 DOI: 10.21037/tcr-21-230] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 05/27/2021] [Indexed: 01/17/2023]
Abstract
Long non-coding RNAs (lncRNAs) belong to an extremely heterogeneous class of non-coding RNAs with a length ranging from 200 to 100,000 bp. They modulate a series of cellular pathways in both physiological and pathological context. It is no coincidence that they are expressed in an aberrant way in pathologies such as cancer, so as to deserve to be subclassified as oncogenes or tumor suppressors. These molecules are also involved in the regulation of cancer cell proliferation. Several lncRNAs are able to modulate cell growth both positively and negatively, and in this review we have focused on a small group of them, characterized by the simultaneous action on different pathways regulating cell proliferation. They have been considered in the light of their behavior in three different subtypes of proliferative pathways that we can define as (I) tumor suppressor, (II) oncogenic and (III) transcriptionally-driven. More specifically, we have characterized some lncRNAs considered oncogenes (such as H19, linc-ROR, MALAT1, HULC, HOTAIR and ANRIL), tumor suppressors (such as MEG3 and lincRNA-p21), and both oncogenes/tumor suppressors (UCA1 and TUG1) in a little more detail. As can be understood from the review, the interactions between lncRNAs and their molecular targets, only in the context of controlling cell proliferation, give rise to an intricate molecular network, the understanding of which, in the future, will certainly be of help for the treatment of molecular diseases such as cancer.
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Affiliation(s)
- Marco De Martino
- Institute of Experimental Endocrinology and Oncology (IEOS) "G. Salvatore", National Research Council (CNR), Naples, Italy
| | - Francesco Esposito
- Institute of Experimental Endocrinology and Oncology (IEOS) "G. Salvatore", National Research Council (CNR), Naples, Italy
| | - Pierlorenzo Pallante
- Institute of Experimental Endocrinology and Oncology (IEOS) "G. Salvatore", National Research Council (CNR), Naples, Italy
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16
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Zheng L, Kang L, Cheng Y, Cao J, Liu L, Xu H, Gao L. Tumor Inhibitory Effect of Long Non-coding RNA LOC100505817 on Gastric Cancer. Pathol Oncol Res 2021; 27:581542. [PMID: 34385891 PMCID: PMC8354317 DOI: 10.3389/pore.2021.581542] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 02/11/2021] [Indexed: 01/01/2023]
Abstract
Gastric cancer (GC) is one of the major malignancies worldwide. Emerging evidence has revealed the potential involvement of long noncoding RNA (lncRNA) in human genetic disorders and cancer, but the role of LOC100505817 remains unknown. Thus, in this study, we isolated tissues from GC patients to characterize the functional importance of LOC100505817 in GC tumorigenesis. We also proposed a hypothesis that the regulation of Wnt/β-catenin pathway by LOC100505817 was regulated by miR-20a-mediated WT1. After the collection of cancer tissues and adjacent tissues were obtained from GC patients, expression of LOC100505817, Wnt/β-catenin pathway- and EMT-related genes was quantified. Ectopic expression and knockdown experiments were applied in order to investigate the protective role of LOC100505817 in the progression of GC. Subsequently, cell viability, flow cytometry for apoptosis and cell cycle were detected via CCK-8, while migration and invasion were determined using scratch test and Transwell assay respectively. Then interactions among LOC100505817, miR-20a and WT1 were explored by dual luciferase reporter gene assay, RNA pull down assay and RNA binding protein immunoprecipitation (RIP) assay. The results found poor expression LOC100505817 was poorly expressed in GC cells and tissues. Overexpressed LOC100505817 resulted in the significant reduction of cell proliferation, migration and invasion as well as the expression of Wnt2b, β-catenin, CyclinD1, N-cadherin, Vimentin and snail, while increased cell apoptosis along with the expression of E-cadherin. Wnt/β-catenin pathway and EMT in GC cells were suppressed by LOC100505817 through miR-20a-inhibted WT1. In summary, our results provided evidence suggesting that LOC100505817 inhibits GC through LOC100505817-mediated inhibition of Wnt/β-catenin pathway, that leads to the overall restraining of GC cell proliferation, migration and invasion through miR-20a-reduced WT1.
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Affiliation(s)
- Lei Zheng
- Department of Oncology, The First Hospital of Qinhuangdao, Qinhuangdao, China
| | - Liying Kang
- Department of Oncology, Wuqing People Hospital, Tianjin, China
| | - Yan Cheng
- Disinfection Supply Room, The First Hospital of Qinhuangdao, Qinhuangdao, China
| | - Junli Cao
- Department of Oncology, The First Hospital of Qinhuangdao, Qinhuangdao, China
| | - Lijie Liu
- Department of Oncology, The First Hospital of Qinhuangdao, Qinhuangdao, China
| | - Hongmei Xu
- Department of Oncology, The First Hospital of Qinhuangdao, Qinhuangdao, China
| | - Liming Gao
- Department of Oncology, The First Hospital of Qinhuangdao, Qinhuangdao, China
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17
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Hu S, Liu J, Feng S, Wang Y, Liu H. LncRNA SUMO1P3 acts as a prognostic biomarker and promotes hepatocellular carcinoma growth and metastasis. Aging (Albany NY) 2021; 13:12479-12492. [PMID: 33902004 PMCID: PMC8148505 DOI: 10.18632/aging.202921] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 01/04/2021] [Indexed: 04/10/2023]
Abstract
Long noncoding RNAs (lncRNAs) are involved in the progression of various cancers, including hepatocellular carcinoma (HCC). However, the biological functions of lncRNA small ubiquitin-like modifier 1 pseudogene 3 (SUMO1P3) and the underlying mechanisms remain unclear. In this study, we revealed that SUMO1P3 expression was enhanced in HCC tissues and cell lines, positively associating with tumor size and number, poor differentiation, lymphatic and distant metastasis, TNM stage, and poor prognosis in HCC patients. In vitro assays showed that SUMO1P3 depletion reduced HCC cell viability and proliferation by hindering cyclin D1 expression and Akt phosphorylation. SUMO1P3 knockdown induced HCC cell apoptosis, as indicated by increased Bax and cleaved caspase-3 expression and the decreased Bcl-2 level. SUMO1P3 silencing suppressed HCC cell migration and invasion by increasing epithelial marker E-cadherin expression and decreasing mesenchymal marker vimentin expression, as well as reducing matrix metalloproteinase (MMP)-2 and MMP-9 levels. Consistently, SUMO1P3 depletion in HCC cells retarded tumor growth and lung metastasis in vivo. Overall, these results supported the applicability of SUMO1P3 as a useful predictor of HCC prognosis and a potential therapeutic target for HCC patients.
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Affiliation(s)
- Shu Hu
- Medical College, Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Jiancheng Liu
- Medical College, Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Shuying Feng
- Medical College, Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Yue Wang
- Medical College, Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Hongchao Liu
- Medical College, Henan University of Science and Technology, Luoyang 471003, Henan, China
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18
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Yin M, Chen WP, Yin XP, Tu JL, Hu N, Li ZY. LncRNA TUG1 Demethylated by TET2 Promotes NLRP3 Expression, Contributes to Cerebral Ischemia/Reperfusion Inflammatory Injury. ASN Neuro 2021; 13:17590914211003247. [PMID: 33853366 PMCID: PMC8058810 DOI: 10.1177/17590914211003247] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
LncRNA TUG1 has not yet been reported in cerebral ischemia/reperfusion (I/R) injury. Methylcytosine dioxygenase TET2 is involved in ischemic damage. This study aimed to investigate the effects of TUG1 demethylated by TET2 on I/R-induced inflammatory response and identified its possible mechanisms.We found that TUG1 expression was significantly upregulated in oxygen-glucose deprivation and reoxygenation (OGD/R)-induced SH-SY5Y and SK-N-SH cells. Using the middle cerebral artery occlusion (MCAO) mice, we observed a similar effect. We also found that I/R injury could downregulate miR-200a-3p and upregulate NLRP3 and TET2. The knockdown of TUG1 could alleviate OGD/R-induced inflammatory response through upregulating miR-200a-3p and downregulating NLRP3 and other pro-inflammatory molecules. miR-200a-3p inhibition can partially reverse the effects of TUG1 silencing. Further experiments confirmed that TUG1 sponged miR-200a-3p to diminish miR-200a-3p and promote NLRP3 dependent inflammatory responses. Mechanically, knockdown of TET2 induced low levels of TUG1 and high levels of miR-200a-3p in both SK-N-SH and SH-SY5Y cells. IL-18, IL-1β, NLRP3, Caspase-1, and GSDMD-N were highly downregulated in OGD/R-induced SK-N-SH and SH-SY5Y cells after TET2 knockdown. TUG1 overexpression could reverse this effect. All the data indicated that TET2 could demethylate TUG1 and contribute to the inflammatory response. In additional experiments using the MCAO mice model, we confirmed knockdown of TET2 attenuated I/R-induced inflammatory response and brain injuries via decreasing TUG1 and increasing miR-200a-3p to inhibit NLRP3 expression. The demethylation of TUG1 by TET2 might aggravate I/R-induced inflammatory injury via modulating NLRP3 by miR-200a-3p. Our data confirmed that TET2 contributed to I/R-induced inflammatory response via the demethylation of TUG1 and regulated TUG1/miR-200a-3p/NLRP3 pathway.
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Affiliation(s)
- Min Yin
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang, P.R. China
| | - Wei-Ping Chen
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang, P.R. China
| | - Xiao-Ping Yin
- Department of Neurology, The Affiliated Hospital of Jiujiang University, Jiujiang, P.R. China
| | - Jiang-Long Tu
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang, P.R. China
| | - Na Hu
- Department of Pediatrics, The Second Affiliated Hospital of Nanchang University, Nanchang, P.R. China
| | - Zheng-Yu Li
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang, P.R. China
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19
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Zhao D, Chen H, Wang B. Assessing the Regulatory Functions of LncRNA SNHG11 in Gastric Cancer Cell Proliferation and Migration. Front Cell Dev Biol 2021; 9:620476. [PMID: 33816469 PMCID: PMC8012502 DOI: 10.3389/fcell.2021.620476] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 02/22/2021] [Indexed: 01/23/2023] Open
Abstract
The aim of this study was to assess the regulatory functions of SNHG11 in gastric cancer (GC) cell proliferation and migration. Dual-luciferase reporter assay and bioinformatics prediction [starBase (http://starbase.sysu.edu.cn/) and TargetScan (http://www.targetscan.org)] indicated that SNHG11 functions as a miR-184 sponge that can directly act on CDC25A. Compared with normal healthy gastric tissue and mucosal epithelial cell GES-1, SNHG11 and CDC25A expressions were dramatically increased in GC samples and cell lines, whereas microRNA-184 (miR-184) levels were reduced. SNHG11 silencing led to increased miR-184 and reduced CDC25A, whereas miR-184 downregulation recovered the expression of CDC25A. Additionally, miR-184 upregulation also played a role in regulating CDC25A ablation. Then, SNHG11 was silenced or miR-184 was upregulated in two GC cells (SGC-7901 and MKN-28). SNHG11 silencing and miR-184 upregulation caused a notable decrease in GC cell growth and proliferation and increased the apoptotic level of GC cells. Furthermore, SNHG11 silencing and miR-184 upregulation contributed to a decreased migration capacity of GC cells. Downregulated miR-184 expression in SNHG11 silenced GC cells showed that miR-184 inhibition reversed the effect of SNHG11 silencing on the growth, proliferation, apoptosis, and migration of GC cells. Moreover, in vivo xenograft experiments demonstrated that SNHG11 knockdown can inhibit tumor growth. These observations confirmed that SNHG11 acts as an oncogene, whereas miR-194 served as a tumor suppressor in GC development. SNHG11 may provide a new biomarker for GC diagnosis, treatment, and prognosis.
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Affiliation(s)
- Danyi Zhao
- Department of Gastrointestinal Oncology, The Second Hospital of Dalian Medical University, Dalian, China
| | | | - Bing Wang
- Department of Gastrointestinal Oncology, The Second Hospital of Dalian Medical University, Dalian, China
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20
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Sánchez Y, Vaca-Paniagua F, Herrera L, Oñate L, Herrera-Goepfert R, Navarro-Martínez G, Cerrato D, Díaz-Velázquez C, Quezada EM, García-Cuellar C, Prada D. Nutritional Indexes as Predictors of Survival and Their Genomic Implications in Gastric Cancer Patients. Nutr Cancer 2020; 73:1429-1439. [PMID: 32715775 DOI: 10.1080/01635581.2020.1797833] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Gastric cancer is an aggressive malignancy with poor prognosis. Although obesity is a risk factor, an association between overweight and better survival has been reported. We explored the genomic implications of such association. Data from 940 patients were analyzed using Cox regression models and ROC curves to assess body mass index (BMI) and prognostic nutritional index (PNI) as predictors of survival. The exome sequencing of a random subset was analyzed to determine copy number variation (CNV) and single nucleotide variation (SNV), using Kruskal-Wallis and chi-square tests to evaluate their clinical implications. Overall survival was lower in patients with BMI ≤ 24.9 and PNI ≤ 29 (p < 0.001). BMI and survival were directly correlated (HR: 0.972, 95% CI: 0.953, 0.992; p-value < 0.007). A higher PNI correlated with improved survival (HR: 0.586, 95% CI: 0.429, 0.801; p-value <0.001). We found a PNI cutoff point of 41.00 for overall survival. Genomic analysis showed an association between lower BMI, less CNV events (p-value = 0.040) and loss of tumor suppressor genes (p-value = 0.021). BMI and PNI are independent factors for overall survival in gastric cancer, probably linked to variations in genomic intratumoral alterations.
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Affiliation(s)
- Yesennia Sánchez
- Unit of Biomedical Research in Cancer, Instituto Nacional de Cancerología - Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Felipe Vaca-Paniagua
- Unit of Biomedical Research in Cancer, Instituto Nacional de Cancerología - Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico.,Unidad de Biomedicina, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla de Baz, Mexico
| | - Luis Herrera
- Unit of Biomedical Research in Cancer, Instituto Nacional de Cancerología - Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico.,Instituto Nacional de Medicina Genómica, Mexico City, Mexico
| | - Luis Oñate
- Unit of Biomedical Research in Cancer, Instituto Nacional de Cancerología - Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | | | - Guiselle Navarro-Martínez
- Unit of Biomedical Research in Cancer, Instituto Nacional de Cancerología - Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Dennis Cerrato
- Unit of Biomedical Research in Cancer, Instituto Nacional de Cancerología - Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Clara Díaz-Velázquez
- Unidad de Biomedicina, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla de Baz, Mexico
| | - Ericka Marel Quezada
- Unit of Biomedical Research in Cancer, Instituto Nacional de Cancerología - Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Claudia García-Cuellar
- Unit of Biomedical Research in Cancer, Instituto Nacional de Cancerología - Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Diddier Prada
- Unit of Biomedical Research in Cancer, Instituto Nacional de Cancerología - Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico.,Department of Biomedical Informatics, Faculty of Medicine, Universidad Nacional Autónoma de México, Mexico City, Mexico.,Department of Environmental Health Science, Mailman School of Public Health, Columbia University, New York City, USA
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21
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The role of molecular mechanism of Ten-Eleven Translocation2 (TET2) family proteins in pathogenesis of cardiovascular diseases (CVDs). Mol Biol Rep 2020; 47:5503-5509. [PMID: 32572734 DOI: 10.1007/s11033-020-05602-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 06/17/2020] [Indexed: 12/19/2022]
Abstract
Cardiovascular disease (CVD) is one of the most common diseases worldwide. The underlying pathogenesis of the disease has not yet been determined, but many factors have been identified. Tet methylcytosine dioxygenase 2 (TET2) is one of the epigenetic factors involved in regulating many genes. Therefore, based on the studies shown, this factor plays an important role in preventing the occurrence of CVD. TET2 has been shown to increase angiogenesis by expressing Robo4. It also increases the activity of Matrix metalloproteinases (MMPs) and stimulates the secretion of Vascular endothelial growth factor angiogenesis. On the other hand, it has been shown that TET2 regulates the expression of several genes and the development of the heart during the embryonic period due to its oxygenating role. TET2 has been shown to regulates the expression of the genes such as Ying Yang1 (YY1), Sox9b, Inhbaa and many other genes that ultimately lead to the differentiation of cardiomyocytes. On the other hand, it has been shown that some Long non coding RNA and MicroRNAs reduce TET2 expression and CVD. Finally, it is concluded that inducing TET2 expression can be a good therapeutic strategy to prevent or improve CVD.
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22
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Huang R, Wang Y, Ge H, Wang D, Wang Y, Zhang W, Yang J, Cheng J. Restoration of TET2 deficiency inhibits tumor growth in head neck squamous cell carcinoma. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:329. [PMID: 32355773 PMCID: PMC7186610 DOI: 10.21037/atm.2020.02.145] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Background Tet methylcytosine dioxygenase 2 (TET2) has been increasingly recognized as an important tumor suppressor involved in tumorigenesis. Here, we aimed to explore the expression pattern of TET2, its clinical significance as well as functional roles in head neck squamous cell carcinoma (HNSCC). Methods Both mRNA and protein levels of TET2 in primary HNSCC samples were detected via immunohistochemistry and qRT-PCR, respectively. Correlations between TET2 expression with multiple clinicopathological parameters and patient survival were determined. The biological roles of TET2 in HNSCC were assessed via a gain-of-function approach and in 4-nitroquinoline-1-oxide (4NQO)-induced HNSCC model. Restoration of TET2 by chemicals including 5-Aza-2'-deoxycytidine (5-AZA), metformin or Vitamin C (VC) to inhibit tumor growth was determined in vitro and in a xenograft animal model. Results Reduced TET2 expression was found in a large fraction of HNSCC samples. Downregulated TET2 significantly correlated with larger tumor size, advanced clinical stage and inferior prognosis. Reduced TET2 and 5-hydroxymethylcytosine (5hmC) were observed along with disease progression in the 4NQO-induced HNSCC model. Enforced TET2 overexpression significantly inhibited cell proliferation, migration and enhanced the chemosensitivity of cisplatin in HNSCC cells. Restoration of TET2 following 5-AZA, metformin or VC exposure impaired cell proliferation and migration in vitro. Moreover, VC alone or in synergistic with cisplatin potently inhibited tumor growth in vivo. Conclusions Our data reveal that reduced TET2 associates with tumor aggressiveness and reduced survival in HNSCC. Genetic or pharmacological restoration of TET2 might be a viable therapeutic strategy for HNSCC patients with TET2 deficiency.
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Affiliation(s)
- Rong Huang
- Jiangsu Key Laboratory of Oral Disease, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing 210029, China.,Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing 210029, China.,Department of Medical Technology, Taizhou Polytechnic College, Taizhou 225300, China
| | - Yi Wang
- Department of Stomatology, The First Affiliated Hospital of USTC and Anhui Provincial Hospital, Hefei 23000, China
| | - Han Ge
- Jiangsu Key Laboratory of Oral Disease, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing 210029, China.,Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing 210029, China
| | - Dongmiao Wang
- Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing 210029, China
| | - Yanling Wang
- Jiangsu Key Laboratory of Oral Disease, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing 210029, China
| | - Wei Zhang
- Department of Oral Pathology, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing 210029, China
| | - Jianrong Yang
- Jiangsu Key Laboratory of Oral Disease, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing 210029, China
| | - Jie Cheng
- Jiangsu Key Laboratory of Oral Disease, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing 210029, China.,Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing 210029, China
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Wang F, Zhang J, Qi J. Ten-eleven translocation-2 affects the fate of cells and has therapeutic potential in digestive tumors. Chronic Dis Transl Med 2020; 5:267-272. [PMID: 32055786 PMCID: PMC7004935 DOI: 10.1016/j.cdtm.2019.12.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Indexed: 02/07/2023] Open
Abstract
Ten-eleven translocation (TET) methylcytosine dioxygenases catalyze the oxidative reactions of 5-methylcytosine (5-mC) to 5-hydroxymethylcytosine (5-hmC), 5-formylcytosine (5-fC), and 5-carboxylcytosine (5-caC), which are intermediate steps during DNA demethylation. It is reported that somatic mutations of TET2 gene are identified in a variety of human tumors, especially in hematological malignancies. The tendency and mechanism of cellular differentiation in different systems are affected by TET2 via regulation of associated gene expression or maintenance of demethylated state. TET2 acts as a critical driver of tumorigenesis through the conversion of 5-mC to 5-hmC and successive oxidation products. Sometimes, it requires special interactions and cofactors. Here, we reviewed recent advances in understanding the function of TET2 proteins in regulating cell differentiation, and its role in various tumors focusing on several digestive cancers.
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Affiliation(s)
- Feng Wang
- Department of Gastroenterology, Zhongnan Hospital, Wuhan University, Wuhan, Hubei 430071, China
| | - Jing Zhang
- Department of Gastroenterology, Zhongnan Hospital, Wuhan University, Wuhan, Hubei 430071, China
| | - Jian Qi
- Department of Gastroenterology, Zhongnan Hospital, Wuhan University, Wuhan, Hubei 430071, China
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Ghafouri-Fard S, Taheri M. Long non-coding RNA signature in gastric cancer. Exp Mol Pathol 2019; 113:104365. [PMID: 31899194 DOI: 10.1016/j.yexmp.2019.104365] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 12/18/2019] [Accepted: 12/28/2019] [Indexed: 02/07/2023]
Abstract
Gastric cancer as a common human malignancy has been associated with aberrant expressions of several coding and non-coding genes. Long non-coding RNAs (lncRNAs) as regulators of gene expressions at different genomic, transcriptomic and post-transcriptomic levels are among putative biomarkers and therapeutic targets in gastric cancer. In the present study, we have searched available literature and listed lncRNAs that are involved in the pathogenesis of gastric cancer. In addition, we discuss associations between expressions of these lncRNAs and tumoral features or risk factors for gastric cancer. Based on the established role of lncRNAs in regulation of genomic stability, cell cycle, apoptosis, angiogenesis and other aspects of cell physiology, the potential of these transcripts as therapeutic targets in gastric cancer should be evaluated in future studies.
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Affiliation(s)
- Soudeh Ghafouri-Fard
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Taheri
- Urogenital Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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25
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Potential role of TET2 in gastric cancer cisplatin resistance. Pathol Res Pract 2019; 215:152637. [DOI: 10.1016/j.prp.2019.152637] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 08/26/2019] [Accepted: 09/15/2019] [Indexed: 01/27/2023]
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Zhao H, Meng L, Xu C, Lin B, Zheng X, Wang J, Feng D. Retracted Article: Long noncoding RNA ANRIL protects cardiomyocytes against hypoxia/reoxygenation injury by sponging miR-195-5p and upregulating Bcl-2. RSC Adv 2019; 9:35624-35635. [PMID: 35702641 PMCID: PMC9097494 DOI: 10.1039/c9ra04898g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 10/26/2019] [Indexed: 01/04/2023] Open
Abstract
Long noncoding RNAs have been widely accepted to play important roles in acute myocardial infarction (AMI). The dysregulation of cyclin-dependent kinase inhibitor 2B antisense RNA 1 (ANRIL) was discovered in AMI patients. Nevertheless, the detailed role and molecular mechanisms of ANRIL in AMI remain indistinct. The levels of ANRIL, miR-195-5p and Bcl-2 mRNA were determined by qRT-PCR. western blot was performed to assess the expression of Bcl-2, Bax, Cyclin D1 and p21. Cell proliferation was detected by CCK-8 assay, and cell apoptosis was measured by flow cytometry. The targeted correlation between ANRIL and miR-195-5p was confirmed by the dual-luciferase reporter and RNA pull-down assays. Our data revealed that ANRIL was downregulated and miR-195-5p was upregulated in the serum of AMI patients and hypoxia/reoxygenation (H/R)-induced myocardial cells. ANRIL upregulation or miR-195-5p knockdown alleviated H/R-induced myocardial cell injury. Moreover, ANRIL sequestered miR-195-5p by acting as a sponge of miR-195-5p. ANRIL upregulated Bcl-2 expression by sponging miR-195-5p. Additionally, ANRIL overexpression alleviated H/R-induced myocardial cell injury by upregulating Bcl-2. In conclusion, our study indicated that ANRIL upregulation alleviated H/R-induced myocardial cell injury partially through sponging miR-195-5p and upregulating Bcl-2, highlighting its role as a promising mediator for new therapies for AMI treatment.
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Affiliation(s)
- Hui Zhao
- Department of Cardiac Surgery, The First Affiliated Hospital of Zhengzhou University No. 1 Longhu Central Road, Jinshui District450052 Zhengzhou China +86-0371-66271808
| | - Li Meng
- Department of Intensive Care Unit, The Henan Provincial Chest Hospital Zhengzhou China
| | - Chengyang Xu
- Department of International Medical Center, The Henan Provincial PeopleS Hospital Zhengzhou China
| | - Bin Lin
- Department of Cardiac Surgery, The First Affiliated Hospital of Zhengzhou University No. 1 Longhu Central Road, Jinshui District450052 Zhengzhou China +86-0371-66271808
| | - Xiangming Zheng
- Department of Anesthesiology, The First Affiliated Hospital of Zhengzhou University Zhengzhou China
| | - Jiaxiang Wang
- Department of Cardiac Surgery, The First Affiliated Hospital of Zhengzhou University No. 1 Longhu Central Road, Jinshui District450052 Zhengzhou China +86-0371-66271808
| | - Deguang Feng
- Department of Cardiac Surgery, The First Affiliated Hospital of Zhengzhou University No. 1 Longhu Central Road, Jinshui District450052 Zhengzhou China +86-0371-66271808
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Fattahi S, Kosari-Monfared M, Golpour M, Emami Z, Ghasemiyan M, Nouri M, Akhavan-Niaki H. LncRNAs as potential diagnostic and prognostic biomarkers in gastric cancer: A novel approach to personalized medicine. J Cell Physiol 2019; 235:3189-3206. [PMID: 31595495 DOI: 10.1002/jcp.29260] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 09/03/2019] [Indexed: 02/06/2023]
Abstract
Gastric cancer is the third leading cause of cancer death with 5-year survival rate of about 30-35%. Since early detection is associated with decreased mortality, identification of novel biomarkers for early diagnosis and proper management of patients with the best response to therapy is urgently needed. Long noncoding RNAs (lncRNAs) due to their high specificity, easy accessibility in a noninvasive manner, as well as their aberrant expression under different pathological and physiological conditions, have received a great attention as potential diagnostic, prognostic, or predictive biomarkers. They may also serve as targets for treating gastric cancer. In this review, we highlighted the role of lncRNAs as tumor suppressors or oncogenes that make them potential biomarkers for the diagnosis and prognosis of gastric cancer. Relatively, lncRNAs such as H19, HOTAIR, UCA1, PVT1, tissue differentiation-inducing nonprotein coding, and LINC00152 could be potential diagnostic and prognostic markers in patients with gastric cancer. Also, the impact of lncRNAs such as ecCEBPA, MLK7-AS1, TUG1, HOXA11-AS, GAPLINC, LEIGC, multidrug resistance-related and upregulated lncRNA, PVT1 on gastric cancer epigenetic and drug resistance as well as their potential as therapeutic targets for personalized medicine was discussed.
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Affiliation(s)
- Sadegh Fattahi
- Department of Genetics, Student Research Committee, Babol University of Medical Sciences, Babol, Iran.,Department of Genetics, Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran.,Department of Biochemistry, North Research Center, Pasteur Institute, Amol, Iran
| | | | - Monireh Golpour
- Department of Immunology, Molecular and Cell Biology Research Center, Student Research Committee, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Zakieh Emami
- Department of Genetics, Faculty of Medicine, Babol University of Medical Sciences, Babol, Iran
| | - Mohammad Ghasemiyan
- Department of Genetics, Faculty of Medicine, Babol University of Medical Sciences, Babol, Iran
| | - Maryam Nouri
- Department of Genetics, Faculty of Medicine, Babol University of Medical Sciences, Babol, Iran
| | - Haleh Akhavan-Niaki
- Department of Genetics, Faculty of Medicine, Babol University of Medical Sciences, Babol, Iran
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Hu J, Ni G, Mao L, Xue X, Zhang J, Wu W, Zhang S, Zhao H, Ding L, Wang L. LINC00565 promotes proliferation and inhibits apoptosis of gastric cancer by targeting miR-665/AKT3 axis. Onco Targets Ther 2019; 12:7865-7875. [PMID: 31576144 PMCID: PMC6768015 DOI: 10.2147/ott.s189471] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 05/28/2019] [Indexed: 12/13/2022] Open
Abstract
Background Numerous studies have shown that long noncoding RNA (lncRNA) is involved in gastric cancer (GC). A relevant microarray containing gastric cancer-related lncRNAs was downloaded from The Cancer Genome Atlas database. Methods qRT-PCR was used to analyze LINC00565 and AKT3 expression in tumor tissues and cell lines. Proliferative, colony formation and apoptotic abilities of GC cells after transfection of sh-LINC00565 were determined by CCK-8, colony formation assay and flow cytometry, respectively. RIP was enrolled to detect the interaction between LINC00565, AKT3 and miR-665. Dual luciferase assay was used to confirm the relation between miR-665 and LINC00565 and AKT3. Results Expression level of LINC00565 in GC tissue was highly expressed in GC, which was negatively correlated to prognosis of GC patients. The results showed that knockdown of LINC00565 decreased proliferative and colony formation abilities, and induced apoptosis of GC cells. Pearson analysis showed that LINC00565 was positively correlated with AKT3. Besides, AKT3 was significantly up-regulated in GC. In addition, knockdown of LINC00565 down-regulated AKT3. In order to explore the mechanism, we found that miR-665 could bind to LINC00565 by bioinformatics. Dual-luciferase reporter gene assay and RIP assay both verified the binding relationship between miR-665 and AKT3. Finally, rescue experiments were carried out to explore whether AKT3 could reverse the anti-cancer effect of low-level LINC00565 on GC development. Conclusion In summary, the expression of LINC00565 is upregulated in GC. LINC00565 can be used as the sponge of miR-665 to up-regulate the expression of AKT3, thus promoting the progression of GC.
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Affiliation(s)
- Jianghong Hu
- Department of Gastroenterology, Danyang People's Hospital of Jiangsu Province and Danyang Hospital Affiliated to Nantong University, Danyang, Jiangsu 212300, People's Republic of China
| | - Guohua Ni
- Department of Oncology, Danyang People's Hospital of Jiangsu Province and Danyang Hospital Affiliated to Nantong University, Danyang, Jiangsu 212300, People's Republic of China
| | - Ling Mao
- Department of Oncology, Danyang People's Hospital of Jiangsu Province and Danyang Hospital Affiliated to Nantong University, Danyang, Jiangsu 212300, People's Republic of China
| | - Xianglong Xue
- Department of Gastroenterology, Danyang People's Hospital of Jiangsu Province and Danyang Hospital Affiliated to Nantong University, Danyang, Jiangsu 212300, People's Republic of China
| | - Jijie Zhang
- Department of Oncology, Danyang People's Hospital of Jiangsu Province and Danyang Hospital Affiliated to Nantong University, Danyang, Jiangsu 212300, People's Republic of China
| | - Weixia Wu
- Department of Oncology, Danyang People's Hospital of Jiangsu Province and Danyang Hospital Affiliated to Nantong University, Danyang, Jiangsu 212300, People's Republic of China
| | - Shaoru Zhang
- Central Laboratory, Danyang People's Hospital of Jiangsu Province and Danyang Hospital Affiliated to Nantong University, Danyang, Jiangsu 212300, People's Republic of China
| | - Hong Zhao
- Central Laboratory, Danyang People's Hospital of Jiangsu Province and Danyang Hospital Affiliated to Nantong University, Danyang, Jiangsu 212300, People's Republic of China
| | - Lifang Ding
- Department of Oncology, Danyang People's Hospital of Jiangsu Province and Danyang Hospital Affiliated to Nantong University, Danyang, Jiangsu 212300, People's Republic of China
| | - Lihui Wang
- Central Laboratory, Danyang People's Hospital of Jiangsu Province and Danyang Hospital Affiliated to Nantong University, Danyang, Jiangsu 212300, People's Republic of China
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Deng W, Zhang Y, Cai J, Zhang J, Liu X, Yin J, Bai Z, Yao H, Zhang Z. LncRNA-ANRIL promotes gastric cancer progression by enhancing NF-kB signaling. Exp Biol Med (Maywood) 2019; 244:953-959. [PMID: 31242038 DOI: 10.1177/1535370219860207] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Metastasis is the most challenging issue for gastric cancer, and identification of the molecular mechanism and suitable targets for treatment is the major purpose of recent research. In this study, we found the long non-coding RNA ANRIL was critical for the progression of gastric cancer. Knockdown of ANRIL (also known as CDKN2B-AS) with shRNA increased apoptosis, inhibited tumor growth, and suppressed migration of cancer cells. TET2 (Tet Methylcytosine Dioxygenase 2), a methylcytosine dioxygenase suppressed ANRIL function and prevented cancer progression. Patients with higher TET2 expression survived better, while with higher ANRIL survived worse. Furthermore, expressions of TET2 and ANRIL were negatively correlated in the patient samples. The mechanistic study suggested that ANRIL promoted tumor progression mainly by enhancing NF-kB signaling. Impact statement Gastric cancer is one of the leading causes of cancer-related death. The lack of curative therapeutic options ascribes to the complex genetic background and heterogeneity of gastric cancer. Understanding the molecular details of the disease and identifying the therapeutic targets would offer additional treatment options. Long non-coding RNA ANRIL was involved in the progression of many cancers, including gastric cancer, but the mechanism was unknown. The current study indicated that ANRIL supported tumor cell survival by inhibiting apoptosis and promoted metastasis by enhancing NF-kB signaling. NF-kB signaling was critical in tumor progression, and this study proved another long non-coding RNA that could regulate NF-kB signaling. ANRIL would be a potential biomarker and therapeutic target for gastric cancer prognosis and treatment.
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Affiliation(s)
- Wei Deng
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - Yulong Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - Jun Cai
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - Jun Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - Xiaoye Liu
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - Jie Yin
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - Zhigang Bai
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - Hongwei Yao
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - Zhongtao Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
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Regulatory Network of Two Tumor-Suppressive Noncoding RNAs Interferes with the Growth and Metastasis of Renal Cell Carcinoma. MOLECULAR THERAPY-NUCLEIC ACIDS 2019; 16:554-565. [PMID: 31071531 PMCID: PMC6506628 DOI: 10.1016/j.omtn.2019.04.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Accepted: 04/04/2019] [Indexed: 12/01/2022]
Abstract
Noncoding RNAs (ncRNAs) such as microRNAs (miRNAs) and long ncRNAs (lncRNAs) have been shown to function as pivotal regulators in the carcinogenesis of renal cell carcinoma (RCC). However, the functions and underlying mechanisms of most ncRNAs in RCC are still elusive, and the crosstalks of different layers of ncRNAs are seldom reported. Here we showed that miR-124 and maternally expressed gene 3 (MEG3) were both significantly reduced in RCC, and combined expression of miR-124 and MEG3 emerged as an independent prognostic factor in our RCC cohort. Overexpression of miR-124 or MEG3 inhibited cell proliferation, migration, and invasion in vitro, and restrained tumor growth in vivo. EZH2 knockdown induced the epigenetic silencing of miR-124 and MEG3 expression by H3K27me3. Besides, miR-124 directly targeted the TET1 transcript, and then the interaction resulted in the upregulation of MEG3. Furthermore, we demonstrated that MEG3 induced p53 protein accumulation, whereas p53 was a positive transcriptional regulator of the miR-124. In addition, tumor-suppressive PTPN11 was identified as a direct target of miR-124, as well as the MEG3- and p53-regulated gene. Our study identifies three crosstalks between miR-124 and MEG3, which provide a plausible link for these two ncRNAs in RCC. Both ncRNAs exert important antitumor effects in RCC pathogenesis and might serve as prognostic biomarkers and molecular therapeutic targets.
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Braicu C, Zimta AA, Gulei D, Olariu A, Berindan-Neagoe I. Comprehensive analysis of circular RNAs in pathological states: biogenesis, cellular regulation, and therapeutic relevance. Cell Mol Life Sci 2019; 76:1559-1577. [PMID: 30805658 PMCID: PMC11105679 DOI: 10.1007/s00018-019-03016-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Revised: 11/14/2018] [Accepted: 01/15/2019] [Indexed: 02/06/2023]
Abstract
Circular RNAs (circRNAs) are members of the non-coding transcriptome; however, some of them are translated into proteins. These transcripts have important roles in both physiological and pathological mechanisms due to their ability to directly influence cellular signaling pathways. Specifically, circRNAs are regulators of transcription, translation, protein interaction, and signal transduction. An increased knowledge within their area is observed over the last few years, concomitant with the development of next-generation sequencing techniques. circRNAs are mostly tissue and disease specific with the ability of specifically changing the biological behavior of cells. The altered expression profile is currently investigated as novel minimally invasive diagnosis/prognosis tool and also therapeutic target in human disease. The diagnosis approach is based on their level modification within pathological states, especially cancer, where circRNAs' therapies are intensively explored in anti-aging strategies, diabetes, cardiovascular diseases, and malignant pathologies, and are relying on the restoration of homeostatic profiles.
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Affiliation(s)
- Cornelia Braicu
- Research Center for Functional Genomics, Biomedicine and Translational Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, 23 Marinescu Street, 400337, Cluj-Napoca, Romania.
| | - Andreea-Alina Zimta
- MEDFUTURE-Research Center for Advanced Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, 23 Marinescu Street, 400337, Cluj-Napoca, Romania
| | - Diana Gulei
- MEDFUTURE-Research Center for Advanced Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, 23 Marinescu Street, 400337, Cluj-Napoca, Romania
| | - Andrei Olariu
- Nordlogic Software, 10-12, Rene Descartes Street, 400486, Cluj-Napoca, Romania
| | - Ioana Berindan-Neagoe
- Research Center for Functional Genomics, Biomedicine and Translational Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, 23 Marinescu Street, 400337, Cluj-Napoca, Romania.
- MEDFUTURE-Research Center for Advanced Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, 23 Marinescu Street, 400337, Cluj-Napoca, Romania.
- Department of Functional Genomics and Experimental Pathology, "Prof. Dr. Ion Chiricuta" The Oncology Institute, 34-36 Republicii Street, 400015, Cluj-Napoca, Romania.
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Zhang S, Zhang X, Sun Q, Zhuang C, Li G, Sun L, Wang H. LncRNA NR2F2-AS1 promotes tumourigenesis through modulating BMI1 expression by targeting miR-320b in non-small cell lung cancer. J Cell Mol Med 2018; 23:2001-2011. [PMID: 30592135 PMCID: PMC6378175 DOI: 10.1111/jcmm.14102] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 11/28/2018] [Accepted: 11/30/2018] [Indexed: 01/01/2023] Open
Abstract
Recently, long noncoding RNAs (lncRNAs) are attracting wide attention in the field of cancer research because of its important role in cancer diagnosis and prognosis. But studies on the biological effects and relevant mechanisms of lncRNAs in non‐small cell lung cancer (NSCLC) remain few and need to be enriched. Our study discussed the expression and biological effects of LncRNA NR2F2‐AS1, and further explored its possible molecular mechanisms. As a result, elevated expression of NR2F2‐AS1 was detected in NSCLC tissues and cells and was remarkably associated with the tumor, node, metastasis (TNM) stage and the status of lymphatic metastasis of patients. Down‐regulated NR2F2‐AS1 contributed to the promotion of cell apoptosis and the inhibition of cell proliferation and invasion in A549 and SPC‐A‐1 cells in vivo and vitro. Through bioinformatics analysis, NR2F2‐AS1 functions as a ceRNA directly binding to miR‐320b, BMI1 was a direct target of miR‐320b. Combined with the following cellular experiments, the data showed that NR2F2‐AS1 may influence the NSCLC cell proliferation, invasion and apoptosis through regulating miR‐320b targeting BMI1.
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Affiliation(s)
- Shijie Zhang
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xiaoyun Zhang
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Qianqian Sun
- Department of Clinical Laboratory, Zhengzhou Children's Hospital, Henan Children's Hospital, Children's Hospital Affiliated of Zhengzhou University, Zhengzhou, China
| | - Chunbo Zhuang
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Guanlin Li
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Li Sun
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Huaqi Wang
- Department of Respiratory Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Fanelli GN, Gasparini P, Coati I, Cui R, Pakula H, Chowdhury B, Valeri N, Loupakis F, Kupcinskas J, Cappellesso R, Fassan M. LONG-NONCODING RNAs in gastroesophageal cancers. Noncoding RNA Res 2018; 3:195-212. [PMID: 30533569 PMCID: PMC6257886 DOI: 10.1016/j.ncrna.2018.10.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 10/26/2018] [Accepted: 10/26/2018] [Indexed: 02/07/2023] Open
Abstract
Despite continuing improvements in multimodal therapies, gastro-esophageal malignances remain widely prevalent in the population and is characterized by poor overall and disease-free survival rates. Due to the lack of understanding about the pathogenesis and absence of reliable markers, gastro-esophageal cancers are associated with delayed diagnosis. The increasing understanding about cancer's molecular landscape in the recent years, offers the possibility of identifying 'targetable' molecular events and in particular facilitates novel treatment strategies and development of biomarkers for early stage diagnosis. At least 98% of our genome is actively transcribed into non-coding RNAs encompassing long non-coding RNAs (lncRNAs) constituted of transcripts longer than 200 nucleotides with no protein-coding capacity. Many studies have demonstrated that lncRNAs are functional genomic elements playing pivotal roles in main oncogenic processes. LncRNA can act at multiple levels developing a complex molecular network that can modulate directly or indirectly the expression of genes involved in tumorigenesis. In this review, we focus on lncRNAs as emerging players in gastro-esophageal carcinogenesis and critically assess their potential as reliable noninvasive biomarkers and in next generation targeted therapies.
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Affiliation(s)
- Giuseppe Nicolò Fanelli
- Department of Medicine (DIMED), Surgical Pathology & Cytopathology Unit, University of Padua, Padua, PD, Italy
- Department of Oncologic Pathology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Pierluigi Gasparini
- Department of Cancer Biology and Genetics, College of Medicine, The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
| | - Irene Coati
- Department of Medicine (DIMED), Surgical Pathology & Cytopathology Unit, University of Padua, Padua, PD, Italy
| | - Ri Cui
- Department of Cancer Biology and Genetics, College of Medicine, The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Hubert Pakula
- Department of Oncologic Pathology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Basudev Chowdhury
- Department of Oncologic Pathology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Nicola Valeri
- Division of Molecular Pathology, The Institute of Cancer Research, London, UK
- Department of Medicine, The Royal Marsden NHS Trust, London, UK
| | - Fotios Loupakis
- Oncology Unit, Istituto Oncologico Veneto, IOV-IRCCS, Padua, PD, Italy
| | - Juozas Kupcinskas
- Department of Gastroenterology and Institute for Digestive Research, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Rocco Cappellesso
- Department of Medicine (DIMED), Surgical Pathology & Cytopathology Unit, University of Padua, Padua, PD, Italy
| | - Matteo Fassan
- Department of Medicine (DIMED), Surgical Pathology & Cytopathology Unit, University of Padua, Padua, PD, Italy
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TET2 inhibits tumorigenesis of breast cancer cells by regulating caspase-4. Sci Rep 2018; 8:16167. [PMID: 30385776 PMCID: PMC6212556 DOI: 10.1038/s41598-018-34462-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 10/15/2018] [Indexed: 01/10/2023] Open
Abstract
Epigenetic regulators have been shown to influence breast cancer progression. However, the detailed mechanism by which TET2 plays the suppressive role in tumorigenesis remains not completely understood. We employed RT-qPCR and westernblot to examine genes expression. Next, the bisulphite sequencing PCR was used to determine the methylation level at CASP4 promoter in the cells. Phenotypically, we utilized growth curve analysis, colony formation in soft agar and xenograft tumor assay to assess tumorigenesis of MCF-7 cell. We found that TET2 knockout enhanced colony formation ability and in vivo tumor formation ability of MCF-7 cell, whereas TET2 depletion not affected the growth rate of MCF-7 cell in the culture. Mechanistically, TET2 loss led to a significant decrease in caspase-4 expression possibly via increasing DNA methylation of CASP4 promoter in MCF-7 cell. To validate, TET2 overexpression led to higher level of caspase-4 in MDA-MB-231 and 293T cells, which was dependent on TET2 enzymatic activity. Finally, we observed that caspase-4 could revert, at least partially, TET2 deletion-induced tumorigenesis of MCF-7. In summary, we reveal a novel mechanism that TET2 suppresses tumorigenesis of breast cancer cells through caspase-4. Our findings will facilitate development of new diagnostic markers or therapeutical therapies for breast cancer.
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Antisense Non-Coding RNA in the INK4 Locus (ANRIL) in Human Cancers. INTERNATIONAL JOURNAL OF CANCER MANAGEMENT 2018. [DOI: 10.5812/ijcm.67864] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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36
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Yu H, Rong L. Emerging role of long non-coding RNA in the development of gastric cancer. World J Gastrointest Oncol 2018; 10:260-270. [PMID: 30254721 PMCID: PMC6147769 DOI: 10.4251/wjgo.v10.i9.260] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 06/14/2018] [Accepted: 06/27/2018] [Indexed: 02/05/2023] Open
Abstract
Gastric cancer is a common, worldwide malignancy and has a poor prognosis due to late diagnosis. Long non-coding RNAs (lncRNAs) are a significant subtype of RNA molecules with a length longer than 200 nucleotides (nt) that rarely encode proteins. In recent decades, deregulation of lncRNAs has been shown to be involved in tumorigenesis and tumor progression in various human carcinomas, including gastric cancer. Accumulating evidence has shown that some lncRNAs may function as diagnostic biomarkers or therapeutic targets for gastric cancer. Thus, exploring the specific functions of lncRNAs will help both gain a better understanding of the pathogenesis and develop novel treatments for gastric cancer. In this review, we highlight the expression and functional roles of lncRNAs in gastric cancer, and analyze the potential applications of lncRNAs as diagnostic markers and therapeutic targets.
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Affiliation(s)
- Hang Yu
- Department of Endoscopic Center, Peking University First Hospital, Beijing 100034, China
| | - Long Rong
- Department of Endoscopic Center, Peking University First Hospital, Beijing 100034, China
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Liu P, Zhang M, Niu Q, Zhang F, Yang Y, Jiang X. Knockdown of long non-coding RNA ANRIL inhibits tumorigenesis in human gastric cancer cells via microRNA-99a-mediated down-regulation of BMI1. ACTA ACUST UNITED AC 2018; 51:e6839. [PMID: 30156609 PMCID: PMC6110352 DOI: 10.1590/1414-431x20186839] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 06/25/2018] [Indexed: 12/19/2022]
Abstract
Long non-coding RNA antisense non-coding RNA in the INK4 locus (ANRIL) has been reported to promote tumorigenesis via regulating microRNA (miR)-99a in gastric cancer cells. However, the role of each component involved in it is still not well understood. This study aimed to verify the role of ANRIL in gastric cancer as well as the underlying mechanisms. ANRIL levels in clinical gastric cancer tissues and cell lines were tested by qPCR. Effects of ANRIL silence on cell viability, migration and invasion, apoptosis, and miR-99a expression in MKN-45 and SGC-7901 cells were measured using CCK-8, Transwell assay, flow cytometry, and qPCR assays, respectively. Then, effects of miR-99a inhibition on ANRIL-silenced cells were evaluated. B-lymphoma Mo-MLV insertion region 1 (BMI1) expression, after abnormal expression of ANRIL and miR-99a, was determined. Finally, expression of key proteins in the apoptotic, Notch, and mTOR pathways was assessed. ANRIL level was elevated in gastric cancer tissues and cell lines. Knockdown of ANRIL suppressed cell viability, migration, and invasion, and increased apoptosis through up-regulating miR-99a. Furthermore, ANRIL silence down-regulated BMI1 via up-regulating miR-99a. BMI1 silence down-regulated Bcl-2 and key kinases in the Notch and mTOR pathways and up-regulated p16 and cleaved caspases. We verified the tumor suppressive effects of ANRIL knockdown in gastric cancer cells via crosstalk with miR-99a. Together, we provided a novel regulatory mechanism for ANRIL in gastric cancer, in which ANRIL silence down-regulated BMI1 via miR-99a, along with activation of the apoptotic pathway and inhibition of the Notch and mTOR pathways.
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Affiliation(s)
- Pei Liu
- Department of Infectious Diseases, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Mingming Zhang
- Department of Gastroenterology, Qingdao Municipal Hospital, Qingdao, Shandong, China
| | - Qinghui Niu
- Department of Infectious Diseases, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Fengjuan Zhang
- Department of Infectious Diseases, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Yuling Yang
- Department of Infectious Diseases, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Xiangjun Jiang
- Department of Gastroenterology, Qingdao Municipal Hospital, Qingdao, Shandong, China
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Gao S, Zhao ZY, Wu R, Zhang Y, Zhang ZY. Prognostic value of long noncoding RNAs in gastric cancer: a meta-analysis. Onco Targets Ther 2018; 11:4877-4891. [PMID: 30147339 PMCID: PMC6098423 DOI: 10.2147/ott.s169823] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Background In the last few years, accumulating evidence has indicated that numerous long noncoding RNAs (lncRNAs) are abnormally expressed in gastric cancer (GC) and are associated with the survival of GC patients. This study aimed to conduct a meta-analysis on 19 lncRNAs (AFAP1 antisense RNA 1 [AFAP1-AS1], CDKN2B antisense RNA 1 [ANRIL], cancer susceptibility 15 [CASC15], colon cancer associated transcript 2 [CCAT2], gastric adenocarcinoma associated, positive CD44 regulator, long intergenic noncoding RNA [GAPLINC], H19, imprinted maternally expressed transcript [H19], HOX transcript antisense RNA [HOTAIR], HOXA distal transcript antisense RNA [HOTTIP], long intergenic non-protein coding RNA 673 [LINC00673], metastasis-associated lung adenocarcinoma transcript 1 [MALAT1], maternally expressed 3 [MEG3], promoter of CDKN1A antisense DNA damage activated RNA [PANDAR], Pvt1 oncogene [PVT1], SOX2 overlapping transcript [Sox2ot], SPRY4 intronic transcript 1 [SPRY4-IT1], urothelial cancer associated 1 [UCA1], X inactive specific transcript [XIST], ZEB1 antisense RNA 1 [ZEB1-AS1] and ZNFX1 antisense RNA 1 [ZFAS1]) to systematically estimate their prognostic value in GC. Methods The qualified literature was systematically searched in PubMed, Web of Science, Embase and Cochrane Database of Systematic Reviews (up to March 16, 2018), and one meta-analysis relating to the relationship between lncRNA expression and overall survival (OS) of GC patients was performed. The only evaluation criterion of survival results was OS. Results A total of 6,095 GC patients and 19 lncRNAs from 51 articles were included in the present study. Among the listed 19 lncRNAs, 18 lncRNAs (other than SPRY4-IT1) showed a significantly prognostic value (P<0.05). Conclusion This meta-analysis suggested that the abnormally expressed lncRNAs (AFAP1-AS1, ANRIL, CASC15, CCAT2, GAPLINC, H19, HOTAIR, HOTTIP, LINC00673, MALAT1, MEG3, PANDAR, PVT1, Sox2ot, UCA1, XIST, ZEB1-AS1 and ZFAS1) were significantly associated with the survival of GC patients, among which AFAP1-AS1, CCAT2, LINC00673, PANDAR, PVT1, Sox2ot, ZEB1-AS1 and ZFAS1 were strong candidates in predicting the prognosis of GC patients.
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Affiliation(s)
- Song Gao
- The Second Department of Clinical Oncology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China,
| | - Zhi-Ying Zhao
- Division of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Rong Wu
- The Second Department of Clinical Oncology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China,
| | - Yue Zhang
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, People's Republic of China,
| | - Zhen-Yong Zhang
- The Second Department of Clinical Oncology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China,
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Kong Y, Hsieh CH, Alonso LC. ANRIL: A lncRNA at the CDKN2A/B Locus With Roles in Cancer and Metabolic Disease. Front Endocrinol (Lausanne) 2018; 9:405. [PMID: 30087655 PMCID: PMC6066557 DOI: 10.3389/fendo.2018.00405] [Citation(s) in RCA: 120] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 06/29/2018] [Indexed: 12/12/2022] Open
Abstract
The CDKN2A/B genomic locus is associated with risk of human cancers and metabolic disease. Although the locus contains several important protein-coding genes, studies suggest disease roles for a lesser-known antisense lncRNA encoded at this locus, called ANRIL. ANRIL is a complex gene containing at least 21 exons in simians, with many reported linear and circular isoforms. Like other genes, abundance of ANRIL is regulated by epigenetics, classic transcription regulation, splicing, and post-transcriptional influences such as RNA stability and microRNAs. Known molecular functions of ANRIL include in cis and in trans gene regulation through chromatin modification complexes, and influence over microRNA signaling networks. Polymorphisms at the ANRIL gene are linked to risk for many different cancers, as well as risk of atherosclerotic cardiovascular disease, bone mass, obesity and type 2 diabetes. A broad array of variable reported impacts of polymorphisms on ANRIL abundance, splicing and function suggests that ANRIL has cell-type and context-dependent regulation and actions. In cancer cells, ANRIL gain of function increases proliferation, metastasis, cell survival and epithelial-mesenchymal transformation, whereas ANRIL loss of function decreases tumor size and growth, invasion and metastasis, and increases apoptosis and senescence. In metabolic disease, polymorphisms at the ANRIL gene are linked to risk of type 2 diabetes, coronary artery disease, coronary artery calcium score, myocardial infarction, and stroke. Intriguingly, with the exception of one polymorphism in exon 2 of ANRIL, the single nucleotide polymorphisms (SNPs) associated with atherosclerosis and diabetes are non-overlapping. Evidence suggests that ANRIL gain of function increases atherosclerosis; in diabetes, a risk-SNP reduced the pancreatic beta cell proliferation index. Studies are limited by the uncertain relevance of rodent models to ANRIL studies, since most ANRIL exons do not exist in mouse. Diverse cell-type-dependent results suggest it is necessary to perform studies in the relevant primary human tissue for each disease. Much remains to be learned about the biology of ANRIL in human health and disease; this research area may lead to insight into disease mechanisms and therapeutic approaches.
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Affiliation(s)
| | | | - Laura C. Alonso
- Department of Medicine, Diabetes Center of Excellence, University of Massachusetts Medical School, Worcester, MA, United States
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40
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García MG, Carella A, Urdinguio RG, Bayón GF, Lopez V, Tejedor JR, Sierra MI, García-Toraño E, Santamarina P, Perez RF, Mangas C, Astudillo A, Corte-Torres MD, Sáenz-de-Santa-María I, Chiara MD, Fernández AF, Fraga MF. Epigenetic dysregulation of TET2 in human glioblastoma. Oncotarget 2018; 9:25922-25934. [PMID: 29899831 PMCID: PMC5995234 DOI: 10.18632/oncotarget.25406] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 04/28/2018] [Indexed: 02/06/2023] Open
Abstract
Ten-eleven translocation (TET) enzymes are frequently deregulated in cancer, but the underlying molecular mechanisms are still poorly understood. Here we report that TET2 shows frequent epigenetic alterations in human glioblastoma including DNA hypermethylation and hypo-hydroxymethylation, as well as loss of histone acetylation. Ectopic overexpression of TET2 regulated neural differentiation in glioblastoma cell lines and impaired tumor growth. Our results suggest that epigenetic dysregulation of TET2 plays a role in human glioblastoma.
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Affiliation(s)
- María G García
- Institute of Oncology of Asturias (IUOPA), HUCA, Universidad de Oviedo, Oviedo, Spain.,Nanomaterials and Nanotechnology Research Center (CINN-CSIC), Universidad de Oviedo, El Entrego, Asturias, Spain
| | - Antonella Carella
- Institute of Oncology of Asturias (IUOPA), HUCA, Universidad de Oviedo, Oviedo, Spain.,Nanomaterials and Nanotechnology Research Center (CINN-CSIC), Universidad de Oviedo, El Entrego, Asturias, Spain
| | - Rocío G Urdinguio
- Nanomaterials and Nanotechnology Research Center (CINN-CSIC), Universidad de Oviedo, El Entrego, Asturias, Spain
| | - Gustavo F Bayón
- Institute of Oncology of Asturias (IUOPA), HUCA, Universidad de Oviedo, Oviedo, Spain
| | - Virginia Lopez
- Nanomaterials and Nanotechnology Research Center (CINN-CSIC), Universidad de Oviedo, El Entrego, Asturias, Spain
| | - Juan Ramón Tejedor
- Institute of Oncology of Asturias (IUOPA), HUCA, Universidad de Oviedo, Oviedo, Spain.,Fundación para la Investigación Biosanitaria de Asturias (FINBA), Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Asturias, Spain
| | - Marta I Sierra
- Institute of Oncology of Asturias (IUOPA), HUCA, Universidad de Oviedo, Oviedo, Spain
| | - Estela García-Toraño
- Institute of Oncology of Asturias (IUOPA), HUCA, Universidad de Oviedo, Oviedo, Spain
| | - Pablo Santamarina
- Institute of Oncology of Asturias (IUOPA), HUCA, Universidad de Oviedo, Oviedo, Spain
| | - Raúl F Perez
- Institute of Oncology of Asturias (IUOPA), HUCA, Universidad de Oviedo, Oviedo, Spain
| | - Cristina Mangas
- Institute of Oncology of Asturias (IUOPA), HUCA, Universidad de Oviedo, Oviedo, Spain
| | - Aurora Astudillo
- Department of Pathology, Hospital Universitario Central de Asturias (HUCA), Oviedo, Spain
| | - M Daniela Corte-Torres
- Biobanco del Principado de Asturias, Hospital Universitario Central de Asturias (HUCA), Oviedo, Spain
| | - Inés Sáenz-de-Santa-María
- Otorhinolaryngology Service, Hospital Universitario Central de Asturias, Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo, CIBERONC, Oviedo, Spain
| | - María-Dolores Chiara
- Otorhinolaryngology Service, Hospital Universitario Central de Asturias, Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo, CIBERONC, Oviedo, Spain
| | - Agustín F Fernández
- Institute of Oncology of Asturias (IUOPA), HUCA, Universidad de Oviedo, Oviedo, Spain.,Fundación para la Investigación Biosanitaria de Asturias (FINBA), Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Asturias, Spain
| | - Mario F Fraga
- Nanomaterials and Nanotechnology Research Center (CINN-CSIC), Universidad de Oviedo, El Entrego, Asturias, Spain
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Li D, Yang M, Liao A, Zeng B, Liu D, Yao Y, Hu G, Chen X, Feng Z, Du Y, Zhou Y, He J, Nie Y. Linc00483 as ceRNA regulates proliferation and apoptosis through activating MAPKs in gastric cancer. J Cell Mol Med 2018; 22:3875-3886. [PMID: 29761936 PMCID: PMC6050491 DOI: 10.1111/jcmm.13661] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Accepted: 03/28/2018] [Indexed: 12/20/2022] Open
Abstract
Long non‐coding RNAs (lncRNAs) are important regulators of many cellular processes, and their aberrant expression and/or function is associated with many different diseases, including cancer. However, the identification of functional lncRNAs in gastric cancer is still a challenge. In this study, we describe a novel functional lncRNA, linc00483, that is upregulated and associated with tumorigenesis, tumour size, metastasis and poor prognosis in gastric cancer. In our study, linc00483 promoted gastric cancer cell proliferation, invasiveness and metastasis in vitro and in vivo. Mechanistically, upregulated expression of linc00483 in gastric cancer acts as a sponge to absorb endogenous tumour suppressor miR‐30a‐3p. Furthermore, it restores SPAG9 expression, which is negatively regulated by miR‐30a‐3p, and actives MAPK signaling pathway in gastric cancer cells. Thus, linc00483 is an oncogenic lncRNA in gastric cancer and targeting linc00483 or its pathway can potentially be useful in development of targeted therapies for patients with gastric cancer. Our results show that linc00483 is an important regulator in carcinogenesis and may be a useful biomarker to predict prognosis of gastric cancer patients. We believe our findings are novel and will be of interest to scientists working in many areas related to biomarkers in cancer.
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Affiliation(s)
- Defeng Li
- Department of Gastroenterology and Hepatology, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, China.,Guangzhou Key Laboratory of Digestive Disease, Guangzhou First People's Hospital, Guangzhou, China.,Department of Gastroenterology, The Second Affiliated Hospital, Medical School, South China University of Technology, Guangzhou, China.,Department of Gastroenterology, The First Affiliated Hospital of South China of University, South China of University, Hengyang, China
| | - Meifeng Yang
- Department of Hematology, The First Affiliated Hospital of South China of University, South China of University, Hengyang, China
| | - Aijun Liao
- Department of Gastroenterology, The First Affiliated Hospital of South China of University, South China of University, Hengyang, China
| | - Bing Zeng
- Department of Gastroenterology, The First Affiliated Hospital of South China of University, South China of University, Hengyang, China
| | - Diqun Liu
- Department of Gastroenterology, The First Affiliated Hospital of South China of University, South China of University, Hengyang, China
| | - Yuhong Yao
- Department of Gastroenterology, The First Affiliated Hospital of South China of University, South China of University, Hengyang, China
| | - Guangsheng Hu
- Department of Gastroenterology, The First Affiliated Hospital of South China of University, South China of University, Hengyang, China
| | - Xuanmin Chen
- Department of Gastroenterology, The First Affiliated Hospital of South China of University, South China of University, Hengyang, China
| | - Zhiqiang Feng
- Department of Gastroenterology and Hepatology, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, China.,Guangzhou Key Laboratory of Digestive Disease, Guangzhou First People's Hospital, Guangzhou, China.,Department of Gastroenterology, The Second Affiliated Hospital, Medical School, South China University of Technology, Guangzhou, China
| | - Yanlei Du
- Department of Gastroenterology and Hepatology, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, China.,Guangzhou Key Laboratory of Digestive Disease, Guangzhou First People's Hospital, Guangzhou, China.,Department of Gastroenterology, The Second Affiliated Hospital, Medical School, South China University of Technology, Guangzhou, China
| | - Youlian Zhou
- Department of Gastroenterology and Hepatology, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, China.,Guangzhou Key Laboratory of Digestive Disease, Guangzhou First People's Hospital, Guangzhou, China.,Department of Gastroenterology, The Second Affiliated Hospital, Medical School, South China University of Technology, Guangzhou, China
| | - Jie He
- Department of Gastroenterology and Hepatology, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, China.,Guangzhou Key Laboratory of Digestive Disease, Guangzhou First People's Hospital, Guangzhou, China.,Department of Gastroenterology, The Second Affiliated Hospital, Medical School, South China University of Technology, Guangzhou, China
| | - Yuqiang Nie
- Department of Gastroenterology and Hepatology, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, China.,Guangzhou Key Laboratory of Digestive Disease, Guangzhou First People's Hospital, Guangzhou, China.,Department of Gastroenterology, The Second Affiliated Hospital, Medical School, South China University of Technology, Guangzhou, China
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42
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Yu X, Zheng H, Tse G, Chan MT, Wu WK. Long non-coding RNAs in melanoma. Cell Prolif 2018; 51:e12457. [PMID: 29582492 DOI: 10.1111/cpr.12457] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 02/09/2018] [Indexed: 12/15/2022] Open
Abstract
Melanoma is the most lethal cutaneous cancer with a highly aggressive and metastatic phenotype. While recent genetic and epigenetic studies have shed new insights into the mechanism of melanoma development, the involvement of regulatory non-coding RNAs remain unclear. Long non-coding RNAs (lncRNAs) are a group of endogenous non-protein-coding RNAs with the capacity to regulate gene expression at multiple levels. Recent evidences have shown that lncRNAs can regulate many cellular processes, such as cell proliferation, differentiation, migration and invasion. In the melanoma, deregulation of a number of lncRNAs, such as HOTAIR, MALAT1, BANCR, ANRIL, SPRY-IT1 and SAMMSON, have been reported. Our review summarizes the functional role of lncRNAs in melanoma and their potential clinical application for diagnosis, prognostication and treatment.
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Affiliation(s)
- Xin Yu
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Heyi Zheng
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Gary Tse
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Sha Tin, Hong Kong
| | - Matthew Tv Chan
- Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Sha Tin, Hong Kong
| | - William Kk Wu
- Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Sha Tin, Hong Kong.,State Key Laboratory of Digestive Disease and LKS Institute of Health Sciences, The Chinese University of Hong Kong, Sha Tin, Hong Kong
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43
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Wang H, Liu Y, Zhong J, Wu C, Zhong Y, Yang G, Zhang J, Tang A. Long noncoding RNA ANRIL as a novel biomarker of lymph node metastasis and prognosis in human cancer: a meta-analysis. Oncotarget 2017; 9:14608-14618. [PMID: 29581867 PMCID: PMC5865693 DOI: 10.18632/oncotarget.21825] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Accepted: 09/22/2017] [Indexed: 02/06/2023] Open
Abstract
Dysregulation of the long noncoding RNA antisense noncoding RNA in the INK4 locus (ANRIL) has been reported in various solid tumors. We performed a synthetic analysis to clarify the clinical value of ANRIL as a prognostic indicator in malignant tumors. Article collection was conducted using several electronic databases, including PubMed, Web of Science, Medline, OVID and Embase (up to July 14 2017). Thirteen original studies and 1172 total patients were included in the meta-analysis. There was a significant positive association between the high expression level of ANRIL and lymph node metastasis (OR = 4.77, 95% CI: 2.30–9.91, P < 0.001) by a random effects model (I2 = 73.2, P = 0.001) and negative association with poor grade cancer (OR = 3.44, 95% CI: 1.68–7.08) by a random-effects model (I2 = 77.9, P = 0.000). The results of the meta-analysis showed that overexpression of ANRIL is positively related to poor overall survival (OS) (pooled HR = 2.12, 95% CI: 1.78–2.53, P < 0.0001) by a fixed-effects model (I2 = 0%, P = 0.654) and poor disease-free survival (DFS) (HR = 2.10, 95% CI: 1.51–2.92, P < 0.001) by a fixed-effects model (I2 = 13.3%, P = 0.315) in human solid cancers. Statistically significant associations were also found with cancer type, analysis method, sample size, and follow-up time. In conclusion, ANRIL may serve as a novel biomarker for indicating lymph node metastasis and prognosis in human cancer.
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Affiliation(s)
- Han Wang
- Department of Urinary Surgery, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, China
| | - Yang Liu
- Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Jianhua Zhong
- Department of Urinary Surgery, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, China
| | - Chenglong Wu
- Department of Urinary Surgery, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, China
| | - Yuantang Zhong
- Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Gang Yang
- Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Jinghua Zhang
- Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Aifa Tang
- Department of Urinary Surgery, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, China
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Li Y, Wen X, Wang L, Sun X, Ma H, Fu Z, Li L. LncRNA ZEB1-AS1 predicts unfavorable prognosis in gastric cancer. Surg Oncol 2017; 26:527-534. [PMID: 29113674 DOI: 10.1016/j.suronc.2017.09.008] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 09/20/2017] [Accepted: 09/25/2017] [Indexed: 01/17/2023]
Abstract
OBJECTIVES LncRNA ZEB1 Antisense 1 (ZEB1-AS1) has been suggested to be an oncogenic role in human hepatocellular carcinoma, osteosarcoma, glioma and esophageal carcinoma progression. However, the clinical significance and biological function of ZEB1-AS1 in gastric cancer is poorly understood. METHODS Levels of ZEB1-AS1 expression in gastric cancer tissues and cell lines were detected by qRT-PCR. Loss-of-function and gain-of-function studies were conducted to explore the biological function of ZEB1-AS1 in gastric cancer cells migration, invasion and EMT process. Rescued-function studies were performed to explore the association between ZEB1-AS1 and ZEB1 in gastric cancer cells migration, invasion and EMT process. RESULTS ZEB1-AS1 was overexpressed in gastric cancer tissues and cell lines, and correlated with malignant status and prognosis in gastric cancer patients. ZEB1-AS1 regulated gastric cancer cells migration, invasion and EMT process. ZEB1-AS1 positively regulated ZEB1 expression in gastric cancer cells, and had a strongly positive correlation with ZEB1 expression in gastric cancer tissues. Rescued-function studies showed ZEB1 was critical for ZEB1-AS1 induced gastric cancer cells migration, invasion and EMT process. CONCLUSIONS ZEB1-AS1 served as oncogenic roles in the regulation of gastric cancer cells migration, invasion and EMT process through modulating ZEB1.
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Affiliation(s)
- Yanliang Li
- Department of General Surgery, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, NO.440 Jiyan Road, Jinan City 250117, Shandong Province, PR China; Department of General Surgery, Shandong Provincial Hospital Affiliated to Shandong University, NO.324 Jingwuweiqi Road, Jinan City 250021, Shandong Province, PR China
| | - Xiaowen Wen
- Department of General Surgery, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, NO.440 Jiyan Road, Jinan City 250117, Shandong Province, PR China
| | - Longgang Wang
- Department of General Surgery, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, NO.440 Jiyan Road, Jinan City 250117, Shandong Province, PR China
| | - Xianjun Sun
- Department of General Surgery, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, NO.440 Jiyan Road, Jinan City 250117, Shandong Province, PR China
| | - Heng Ma
- Department of General Surgery, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, NO.440 Jiyan Road, Jinan City 250117, Shandong Province, PR China
| | - Zheng Fu
- Department of Radiology, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, NO.440 Jiyan Road, Jinan City 250117, Shandong Province, PR China.
| | - Leping Li
- Department of General Surgery, Shandong Provincial Hospital Affiliated to Shandong University, NO.324 Jingwuweiqi Road, Jinan City 250021, Shandong Province, PR China.
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Expression Profiling of Long Noncoding RNA Splice Variants in Human Microvascular Endothelial Cells: Lipopolysaccharide Effects In Vitro. Mediators Inflamm 2017; 2017:3427461. [PMID: 29147069 PMCID: PMC5632992 DOI: 10.1155/2017/3427461] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2017] [Accepted: 08/22/2017] [Indexed: 12/02/2022] Open
Abstract
Endothelial cell interactions with lipopolysaccharide (LPS) involve both activating and repressing signals resulting in pronounced alterations in their transcriptome and proteome. Noncoding RNAs are now appreciated as posttranscriptional and translational regulators of cellular signaling and responses, but their expression status and roles during endothelial interactions with LPS are not well understood. We report on the expression profile of long noncoding (lnc) RNAs of human microvascular endothelial cells in response to LPS. We have identified a total of 10,781 and 8310 lncRNA transcripts displaying either positive or negative regulation of expression, respectively, at 3 and 24 h posttreatment. A majority of LPS-induced lncRNAs are multiexonic and distributed across the genome as evidenced by their presence on all chromosomes. Present among these are a total of 44 lncRNAs with known regulatory functions, of which 41 multiexonic lncRNAs have multiple splice variants. We have further validated splice variant-specific expression of EGO (NONHSAT087634) and HOTAIRM1 (NONHSAT119666) at 3 h and significant upregulation of lnc-IL7R at 24 h. This study illustrates the genome-wide regulation of endothelial lncRNA splice variants in response to LPS and provides a foundation for further investigations of differentially expressed lncRNA transcripts in endothelial responses to LPS and pathophysiology of sepsis/septic shock.
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Wei Y, Sun Q, Zhao L, Wu J, Chen X, Wang Y, Zang W, Zhao G. LncRNA UCA1-miR-507-FOXM1 axis is involved in cell proliferation, invasion and G0/G1 cell cycle arrest in melanoma. Med Oncol 2016; 33:88. [PMID: 27389544 DOI: 10.1007/s12032-016-0804-2] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Accepted: 07/01/2016] [Indexed: 01/29/2023]
Abstract
Recently, the incidence of melanoma has been on the rise. Patients with distant metastasis share poor prognosis. Increasing studies have been conducted to clarify the molecular mechanisms as well as to investigate potential effective therapeutic targets in the development of melanoma. This study focuses on the LncRNA UCA1 and its downstream regulated factors. In our experiments, UCA1 expression was discovered to be upregulated in melanoma tissues and cells, while the depletion of UCA1 led to the inhibition of cell proliferation, invasion and cell cycle arrest. To further our understanding of the mechanisms of UCA1, a system of experiments was built. We found that miR-507 could directly bind to UCA1 at the miRNA recognition site, and that there was a negative correlation between miR-507 and UCA1. Additionally, FOXM1 is a target of miR-507 and can be downregulated by either miR-507 overexpression or UCA1 depletion. Downregulated FOXM1 was analogous to the depletion of UCA1 and the overexpression of miR-507. These results, taken together, provide evidence for a novel UCA1 interaction regulatory network in tumorigenesis of melanoma.
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Affiliation(s)
- Yanping Wei
- Department of Dermatology, The People's Hospital of Jiaozuo City, Jiaozuo, 454000, Henan, China
| | - Qianqian Sun
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Lindong Zhao
- Department of Dermatology, The People's Hospital of Jiaozuo City, Jiaozuo, 454000, Henan, China
| | - Jianbo Wu
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Xiaonan Chen
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Yuanyuan Wang
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Wenqiao Zang
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Guoqiang Zhao
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China.
- Collaborative Innovation Center of Cancer Chemoprevention, Zhengzhou, 450001, Henan, China.
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Zhou N, Si Z, Li T, Chen G, Zhang Z, Qi H. Long non-coding RNA CCAT2 functions as an oncogene in hepatocellular carcinoma, regulating cellular proliferation, migration and apoptosis. Oncol Lett 2016; 12:132-138. [PMID: 27347113 PMCID: PMC4906942 DOI: 10.3892/ol.2016.4580] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Accepted: 04/29/2016] [Indexed: 12/30/2022] Open
Abstract
An increasing number of studies have demonstrated that the dysregulation of long non-coding RNAs (lncRNAs) may serve an important role in tumor progression. Previous studies have reported that the lncRNA, colon cancer associated transcript 2 (CCAT2), was highly expressed in various tumors. However, the function of CCAT2 in hepatocellular carcinoma (HCC) has not yet been elucidated. The aim of the present study was to identify novel oncogene lncRNAs and investigate their physiological function and mechanism in HCC. Using reverse transcription-quantitative polymerase chain reaction, it was observed that CCAT2 was upregulated in HCC tissues and human HCC cell lines. Furthermore, the impacts of CCAT2 on cell proliferation, migration and apoptosis were analyzed using cell migration, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide and enzyme-linked immunosorbent assay analysis respectively. The overexpression of CCAT2 using a synthesized vector significantly promoted cell migration and proliferation, and inhibited apoptosis of HCC cells in vitro. The suppression of CCAT2 expression resulted in opposing effects. To the best of our knowledge, the present study is the first to demonstrate that CCAT2 functions as a oncogene in HCC. Further investigation is required to clarify the molecular mechanisms of this lncRNA in HCC development.
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Affiliation(s)
- Ning Zhou
- Department of Organ Transplantation and General Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China
| | - Zhongzhou Si
- Department of Organ Transplantation and General Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China
| | - Ting Li
- Department of Organ Transplantation and General Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China
| | - Guangshun Chen
- Department of Organ Transplantation and General Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China
| | - Zhongqiang Zhang
- Department of Organ Transplantation and General Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China
| | - Haizhi Qi
- Department of Organ Transplantation and General Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China
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