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Bosgana P, Nikou S, Dimitrakopoulos FI, Bravou V, Kalophonos C, Kourea E, Tzelepi V, Zolota V, Sampsonas F. Expression of Pluripotency Factors OCT4 and LIN28 Correlates with Survival Outcome in Lung Adenocarcinoma. MEDICINA (KAUNAS, LITHUANIA) 2024; 60:870. [PMID: 38929487 PMCID: PMC11205930 DOI: 10.3390/medicina60060870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 05/15/2024] [Accepted: 05/24/2024] [Indexed: 06/28/2024]
Abstract
Background and Objectives: Lung adenocarcinoma is a leading cause of cancer-related mortality despite recent therapeutic advances. Cancer stem cells have gained increasing attention due to their ability to induce cancer cell proliferation through self-renewal and differentiation into multiple cell lineages. OCT4 and LIN28 (and their homologs A and B) have been identified as key regulators of pluripotency in mammalian embryonic (ES) and induced stem (IS) cells, and they are the crucial regulators of cancer progression. However, their exact role in lung adenocarcinoma has not yet been clarified. Materials and Methods: The aim of this study was to explore the role of the pluripotency factors OCT4 and LIN28 in a cohort of surgically resected human lung adenocarcinomas to reveal possible biomarkers for lung adenocarcinoma prognosis and potential therapeutic targets. The expressions of OCT4, LIN28A and LIN28B were analyzed in formalin-fixed, paraffin-embedded tissue samples from 96 patients with lung adenocarcinoma by immunohistochemistry. The results were analyzed with clinicopathologic parameters and were related to the prognosis of patients. Results: Higher OCT4 expression was related to an improved 5-year overall survival (OS) rate (p < 0.001). Nuclear LIN28B expression was lower in stage I and II tumors (p < 0.05) compared to advanced stage tumors. LIN28B cytoplasmic expression was associated with 5-year OS rates not only in univariate (p < 0.005), but also in multivariate analysis (where age, gender, histopathological subtype and stage were used as cofactors, p < 0.01 HR = 2.592). Patients with lower LIN28B expression showed improved 5-year OS rates compared to patients with increased LIN28B expression. Conclusions: Our findings indicate that OCT4 and LIN28B are implicated in lung adenocarcinoma progression and prognosis outcome; thus, they serve as promising prognostic biomarkers and putative therapeutic targets in lung adenocarcinomas.
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Affiliation(s)
- Pinelopi Bosgana
- Department of Pathology, Medical School, University of Patras, 26504 Rion, Greece; (P.B.); (E.K.); (V.T.); (V.Z.)
| | - Sophia Nikou
- Department of Anatomy, Embryology and Histology, Medical School, University of Patras, 26504 Rion, Greece; (S.N.); (V.B.)
| | | | - Vasiliki Bravou
- Department of Anatomy, Embryology and Histology, Medical School, University of Patras, 26504 Rion, Greece; (S.N.); (V.B.)
| | - Charalambos Kalophonos
- Division of Oncology, Department of Medicine, Medical School, University of Patras, 26504 Rion, Greece; (F.-I.D.); (C.K.)
| | - Eleni Kourea
- Department of Pathology, Medical School, University of Patras, 26504 Rion, Greece; (P.B.); (E.K.); (V.T.); (V.Z.)
| | - Vasiliki Tzelepi
- Department of Pathology, Medical School, University of Patras, 26504 Rion, Greece; (P.B.); (E.K.); (V.T.); (V.Z.)
| | - Vassiliki Zolota
- Department of Pathology, Medical School, University of Patras, 26504 Rion, Greece; (P.B.); (E.K.); (V.T.); (V.Z.)
| | - Fotios Sampsonas
- Department of Pulmonology, Medical School, University of Patras, 26504 Rion, Greece
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Maklad A, Sedeeq M, Chan KM, Gueven N, Azimi I. Exploring Lin28 proteins: Unravelling structure and functions with emphasis on nervous system malignancies. Life Sci 2023; 335:122275. [PMID: 37984514 DOI: 10.1016/j.lfs.2023.122275] [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: 07/11/2023] [Revised: 11/07/2023] [Accepted: 11/14/2023] [Indexed: 11/22/2023]
Abstract
Cancer and stem cells share many characteristics related to self-renewal and differentiation. Both cell types express the same critical proteins that govern cellular stemness, which provide cancer cells with the growth and survival benefits of stem cells. LIN28 is an example of one such protein. LIN28 includes two main isoforms, LIN28A and LIN28B, with diverse physiological functions from tissue development to control of pluripotency. In addition to their physiological roles, LIN28A and LIN28B affect the progression of several cancers by regulating multiple cancer hallmarks. Altered expression levels of LIN28A and LIN28B have been proposed as diagnostic and/or prognostic markers for various malignancies. This review discusses the structure and modes of action of the different LIN28 proteins and examines their roles in regulating cancer hallmarks with a focus on malignancies of the nervous system. This review also highlights some gaps in the field that require further exploration to assess the potential of targeting LIN28 proteins for controlling cancer.
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Affiliation(s)
- Ahmed Maklad
- School of Pharmacy and Pharmacology, College of Health and Medicine, University of Tasmania, Hobart 7005, Tasmania, Australia
| | - Mohammed Sedeeq
- School of Pharmacy and Pharmacology, College of Health and Medicine, University of Tasmania, Hobart 7005, Tasmania, Australia
| | - Kai Man Chan
- School of Pharmacy and Pharmacology, College of Health and Medicine, University of Tasmania, Hobart 7005, Tasmania, Australia
| | - Nuri Gueven
- School of Pharmacy and Pharmacology, College of Health and Medicine, University of Tasmania, Hobart 7005, Tasmania, Australia
| | - Iman Azimi
- School of Pharmacy and Pharmacology, College of Health and Medicine, University of Tasmania, Hobart 7005, Tasmania, Australia; Monash Biomedicine Discovery Institute, Department of Pharmacology, Monash University, Clayton 3168, Victoria, Australia.
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GEWALT TABEA, NOH KAWON, MEDER LYDIA. The role of LIN28B in tumor progression and metastasis in solid tumor entities. Oncol Res 2023; 31:101-115. [PMID: 37304235 PMCID: PMC10208000 DOI: 10.32604/or.2023.028105] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 02/16/2023] [Indexed: 06/13/2023] Open
Abstract
LIN28B is an RNA-binding protein that targets a broad range of microRNAs and modulates their maturation and activity. Under normal conditions, LIN28B is exclusively expressed in embryogenic stem cells, blocking differentiation and promoting proliferation. In addition, it can play a role in epithelial-to-mesenchymal transition by repressing the biogenesis of let-7 microRNAs. In malignancies, LIN28B is frequently overexpressed, which is associated with increased tumor aggressiveness and metastatic properties. In this review, we discuss the molecular mechanisms of LIN28B in promoting tumor progression and metastasis in solid tumor entities and its potential use as a clinical therapeutic target and biomarker.
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Affiliation(s)
- TABEA GEWALT
- Department I of Internal Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne, University of Cologne, Cologne, Germany
| | - KA-WON NOH
- Institute for Pathology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - LYDIA MEDER
- Department I of Internal Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne, University of Cologne, Cologne, Germany
- Mildred Scheel School of Oncology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
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Liao F, Cao Y, Huang M, Chu L, Wang T. Correlation between expression of Lin28B and C-myc in patients with laryngeal squamous cell carcinoma and clinicopathological features and prognosis. ZHONG NAN DA XUE XUE BAO. YI XUE BAN = JOURNAL OF CENTRAL SOUTH UNIVERSITY. MEDICAL SCIENCES 2023; 48:165-171. [PMID: 36999462 PMCID: PMC10930344 DOI: 10.11817/j.issn.1672-7347.2023.220421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/01/2023]
Abstract
OBJECTIVES Laryngeal squamous cell carcinoma (LSCC) is a common malignant tumor of head and neck. Screening of target genes for malignant tumor therapy is one of the focuses of cancer research, with proto-oncogene and tumor suppressor gene as the breakthrough. It has become an urgent need to find the target gene related to the treatment and prognosis of LSCC.This study aims to explore the role of Lin28B and C-myc in LSCC by detecting the expressions of these two proteins and analyze the correlation between the expression of Lin28B and C-myc and clinicopathological features and prognosis of LSCC. METHODS We detected the expression of Lin28B and C-myc proteins in 102 specimens of LSCC and 90 specimens of adjacent tissues by immunochemistry, and analyzed the correlation between Lin28B and C-myc protein expressions in LSCC as well as the correlation between the expressions of the two proteins and the clinicopathological features of LSCC. At the same time, the Kaplan-Meier method was used to analyze the relation between Lin28B and C-myc protein levels with the postoperative survival rate of LSCC patients. RESULTS The protein levels of Lin28B and C-myc in the LSCC tissnes were significantly higher than those in the adjacent tissues (both P<0.05),and there was a positive correlation between the expression of Lin28B and C-myc in LSCC (r=0.476, P<0.05). The expression of Lin28B protein was closely related to age, lymph node metastasis, clinical stage, tumor size, and pathological differentiation of LSCC patients (all P<0.05). while the expression of C-myc protein was closely related to lymph node metastasis, clinical stage, tumor size, and pathological differentiation of LSCC patients (all P<0.05). A relevant survival analysis showed that in patients with higher level of Lin28B (P=0.001) or C-myc protein (P<0.001), the postoperative survival rate was relatively low. CONCLUSIONS Lin28B and C-myc proteins are highly expressed in LSCC with a positive correlation. Furthermore, they are closely related to lymph node metastasis, clinical stage, tumor size, pathological differentiation and prognosis, suggesting that both Lin28B and C-myc might be involved in the occurrence and development of LSCC.
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Affiliation(s)
- Feifei Liao
- Department of Pathology, Third Xiangya Hospital, Central South University, Changsha 410013.
| | - Yuxin Cao
- Department of Pathology, Third Xiangya Hospital, Central South University, Changsha 410013
| | - Meixiang Huang
- Department of Otolaryngology Head and Neck Surgery, Third Xiangya Hospital, Central South University, Changsha 410013, China
| | - Ling Chu
- Department of Pathology, Third Xiangya Hospital, Central South University, Changsha 410013.
| | - Tiansheng Wang
- Department of Otolaryngology Head and Neck Surgery, Third Xiangya Hospital, Central South University, Changsha 410013, China
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Zhang Z, Gao X, Deng L, Jia W, Zhang J, Cheng J, Zhou H, Liu G, Fu W. Association between LIN28B gene polymorphisms and Wilms' tumor susceptibility. Biomark Med 2022; 16:1113-1120. [PMID: 36606447 DOI: 10.2217/bmm-2022-0291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Aim: To survey the association between LIN28B gene polymorphisms and the increased risk of Wilms' tumor (WT). Methods: Five LIN28B polymorphisms (rs314276 C>A, rs221634 A>T, rs221635 T>C, the rs4145418 A>C and rs9404590 T>G) were genotyped in 355 WT patients and 1070 healthy controls to assess the association. Result: The rs314276 CA/AA genotype was a protective factor against WT (corrected odds ratio [OR]: 0.71; p = 0.006). Individuals older than 18 months (corrected OR: 0.60; p = 0.001), males (corrected OR: 0.65; p = 0.011) and in clinical stage I + II patients (corrected OR: 0.60; p = 0.0008) with this genotype were less susceptible to WT. Conclusion: The rs314276 CA/AA genotype may protect against WT.
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Affiliation(s)
- Zhengtao Zhang
- Department of Pediatric Surgery, Guangzhou Women & Children's Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, 510623, China
| | - Xiaofeng Gao
- Department of Pediatric Surgery, Guangzhou Women & Children's Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, 510623, China
| | - Linqing Deng
- Department of Pediatric Surgery, Guangzhou Women & Children's Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, 510623, China
| | - Wei Jia
- Department of Pediatric Surgery, Guangzhou Women & Children's Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, 510623, China
| | - Jiao Zhang
- Department of Pediatric Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China
| | - Jiwen Cheng
- Department of Pediatric Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710004, China
| | - Haixia Zhou
- Department of Hematology, The Second Affiliated Hospital & Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China
| | - Guochang Liu
- Department of Pediatric Surgery, Guangzhou Women & Children's Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, 510623, China
| | - Wen Fu
- Department of Pediatric Surgery, Guangzhou Women & Children's Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, 510623, China
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Qiu F, Qiao B, Zhang N, Fang Z, Feng L, Zhang S, Qiu W. Blocking circ-SCMH1 (hsa_circ_0011946) suppresses acquired DDP resistance of oral squamous cell carcinoma (OSCC) cells both in vitro and in vivo by sponging miR-338-3p and regulating LIN28B. Cancer Cell Int 2021; 21:412. [PMID: 34353342 PMCID: PMC8340538 DOI: 10.1186/s12935-021-02110-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 07/22/2021] [Indexed: 02/08/2023] Open
Abstract
Background Circular RNAs (circRNAs) could participate in cis-dichlorodiammineplatinum (DDP) resistance of human cancers. However, circRNAs role in DDP resistance of oral squamous cell carcinoma (OSCC) progression remains largely undeveloped. Here, we attempted to explore the role of circ-SCMH1 (ID hsa_circ_0011946) in acquired DDP resistance. Methods Expression of circ-SCMH1, microRNA (miR)-338-3p and Lin-28 homolog B (LIN28B) was detected by real-time quantitative PCR and western blotting, and their interactions were confirmed by dual-luciferase reporter assay, RNA immunoprecipitation and RNA pull-down assay. DDP resistance was assessed by MTT assay, colony formation assay, flow cytometry, transwell assays, western blotting, and xenograft experiment. Transmission electron microscopic analysis, nanoparticle tracking analysis and western blotting confirmed the characterizations of extracellular vesicles (EVs). Results Circ-SCMH1 was upregulated in DDP-resistant OSCC tissues and cells (SCC-15/DDP and CAL-27/DDP). Circ-SCMH1 knockdown suppressed the half-maximal inhibitory concentration of DDP, colony formation, and migration/invasion in SCC-15/DDP and CAL-27/DDP cells, but promoted apoptosis rate and apoptotic proteins (Bax and cleaved-caspase-3) expression. However, silencing miR-338-3p abrogated above effects, and overexpressing miR-338-3p mimicked that. Similarly, miR-338-3p overexpression role could be counteracted by restoring LIN28B. Moreover, interfering circ-SCMH1 retarded tumor growth of SCC-15/DDP cells in vivo with DDP treatment or not. Mechanistically, circ-SCMH1 directly sponged miR-338-3p in regulating LIN28B, a target gene for miR-338-3p. Notably, circ-SCMH1 was an EVs cargo, and DDP-resistant OSCC cells-derived EVs could provoke circ-SCMH1 upregulation in parental cells. Conclusion Circ-SCMH1 contributes to chemoresistance of DDP-resistant OSCC cells partially via EVs secretion and circ-SCMH1/miR-338-3p/LIN28B axis. Supplementary Information The online version contains supplementary material available at 10.1186/s12935-021-02110-8.
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Affiliation(s)
- Feng Qiu
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Bin Qiao
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Nan Zhang
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Zheng Fang
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Lu Feng
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Shanfeng Zhang
- Experimental Center for Basic Medicine, Biochemistry and Molecular Biology, Zhengzhou University, Zhengzhou, 450000, Henan, China.
| | - Weiliu Qiu
- Department of Oral and Maxillofacial Surgery, School of Medicine, Ninth People's Hospital, Shanghai Jiao Tong University, No. 639, Manufacturing Bureau Road, Shanghai, 200011, China.
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Weiße J, Rosemann J, Krauspe V, Kappler M, Eckert AW, Haemmerle M, Gutschner T. RNA-Binding Proteins as Regulators of Migration, Invasion and Metastasis in Oral Squamous Cell Carcinoma. Int J Mol Sci 2020; 21:E6835. [PMID: 32957697 PMCID: PMC7555251 DOI: 10.3390/ijms21186835] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 09/14/2020] [Accepted: 09/17/2020] [Indexed: 02/06/2023] Open
Abstract
Nearly 7.5% of all human protein-coding genes have been assigned to the class of RNA-binding proteins (RBPs), and over the past decade, RBPs have been increasingly recognized as important regulators of molecular and cellular homeostasis. RBPs regulate the post-transcriptional processing of their target RNAs, i.e., alternative splicing, polyadenylation, stability and turnover, localization, or translation as well as editing and chemical modification, thereby tuning gene expression programs of diverse cellular processes such as cell survival and malignant spread. Importantly, metastases are the major cause of cancer-associated deaths in general, and particularly in oral cancers, which account for 2% of the global cancer mortality. However, the roles and architecture of RBPs and RBP-controlled expression networks during the diverse steps of the metastatic cascade are only incompletely understood. In this review, we will offer a brief overview about RBPs and their general contribution to post-transcriptional regulation of gene expression. Subsequently, we will highlight selected examples of RBPs that have been shown to play a role in oral cancer cell migration, invasion, and metastasis. Last but not least, we will present targeting strategies that have been developed to interfere with the function of some of these RBPs.
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Affiliation(s)
- Jonas Weiße
- Junior Research Group ‘RNA Biology and Pathogenesis’, Medical Faculty, Martin-Luther University Halle-Wittenberg, 06120 Halle/Saale, Germany; (J.W.); (J.R.); (V.K.)
| | - Julia Rosemann
- Junior Research Group ‘RNA Biology and Pathogenesis’, Medical Faculty, Martin-Luther University Halle-Wittenberg, 06120 Halle/Saale, Germany; (J.W.); (J.R.); (V.K.)
| | - Vanessa Krauspe
- Junior Research Group ‘RNA Biology and Pathogenesis’, Medical Faculty, Martin-Luther University Halle-Wittenberg, 06120 Halle/Saale, Germany; (J.W.); (J.R.); (V.K.)
| | - Matthias Kappler
- Department of Oral and Maxillofacial Plastic Surgery, Medical Faculty, Martin Luther University Halle-Wittenberg, 06120 Halle (Saale), Germany;
| | - Alexander W. Eckert
- Department of Cranio Maxillofacial Surgery, Paracelsus Medical University, 90471 Nuremberg, Germany;
| | - Monika Haemmerle
- Institute of Pathology, Section for Experimental Pathology, Medical Faculty, Martin-Luther University Halle-Wittenberg, 06120 Halle/Saale, Germany;
| | - Tony Gutschner
- Junior Research Group ‘RNA Biology and Pathogenesis’, Medical Faculty, Martin-Luther University Halle-Wittenberg, 06120 Halle/Saale, Germany; (J.W.); (J.R.); (V.K.)
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8
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Fan X, Liu L, Shi Y, Guo F, Wang H, Zhao X, Zhong D, Li G. Integrated analysis of RNA-binding proteins in human colorectal cancer. World J Surg Oncol 2020; 18:222. [PMID: 32828126 PMCID: PMC7443297 DOI: 10.1186/s12957-020-01995-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Accepted: 08/09/2020] [Indexed: 12/15/2022] Open
Abstract
Background Although RNA-binding proteins play an essential role in a variety of different tumours, there are still limited efforts made to systematically analyse the role of RNA-binding proteins (RBPs) in the survival of colorectal cancer (CRC) patients. Methods Analysis of CRC transcriptome data collected from the TCGA database was conducted, and RBPs were extracted from CRC. R software was applied to analyse the differentially expressed genes (DEGs) of RBPs. To identify related pathways and perform functional annotation of RBP DEGs, Gene Ontology (GO) function and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses were carried out using the database for annotation, visualization and integrated discovery. Protein-protein interactions (PPIs) of these DEGs were analysed based on the Search Tool for the Retrieval of Interacting Genes (STRING) database and visualized by Cytoscape software. Based on the Cox regression analysis of the prognostic value of RBPs (from the PPI network) with survival time, the RBPs related to survival were identified, and a prognostic model was constructed. To verify the model, the data stored in the TCGA database were designated as the training set, while the chip data obtained from the GEO database were treated as the test set. Then, both survival analysis and ROC curve verification were conducted. Finally, the risk curves and nomograms of the two groups were generated to predict the survival period. Results Among RBP DEGs, 314 genes were upregulated while 155 were downregulated, of which twelve RBPs (NOP14, MRPS23, MAK16, TDRD6, POP1, TDRD5, TDRD7, PPARGC1A, LIN28B, CELF4, LRRFIP2, MSI2) with prognostic value were obtained. Conclusions The twelve identified genes may be promising predictors of CRC and play an essential role in the pathogenesis of CRC. However, further investigation of the underlying mechanism is needed.
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Affiliation(s)
- Xuehui Fan
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, 23 You Zheng Street, Harbin, 150001, Heilongjiang Province, People's Republic of China
| | - Lili Liu
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, 23 You Zheng Street, Harbin, 150001, Heilongjiang Province, People's Republic of China
| | - Yue Shi
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, 23 You Zheng Street, Harbin, 150001, Heilongjiang Province, People's Republic of China
| | - Fanghan Guo
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, 23 You Zheng Street, Harbin, 150001, Heilongjiang Province, People's Republic of China
| | - Haining Wang
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, 23 You Zheng Street, Harbin, 150001, Heilongjiang Province, People's Republic of China
| | - Xiuli Zhao
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, 23 You Zheng Street, Harbin, 150001, Heilongjiang Province, People's Republic of China
| | - Di Zhong
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, 23 You Zheng Street, Harbin, 150001, Heilongjiang Province, People's Republic of China
| | - Guozhong Li
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, 23 You Zheng Street, Harbin, 150001, Heilongjiang Province, People's Republic of China.
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Zou Z, Zhou X, Zhang R, Zhang Q, Jiang S, Xu C, Zhang R, Xie T, Zhu H, Gong P, Zhang D, Ma H, Liao L, Dong J. Lin28a up-regulation is associated with the formation of restenosis via promoting proliferation and migration of vascular smooth muscle cells. J Cell Mol Med 2020; 24:9682-9691. [PMID: 32710472 PMCID: PMC7520293 DOI: 10.1111/jcmm.15506] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 03/16/2020] [Accepted: 05/29/2020] [Indexed: 01/16/2023] Open
Abstract
To explore the potential role of Lin28a in the development of restenosis after percutaneous transluminal angioplasty, double‐balloon injury surgery and mono‐balloon injury surgery were used to establish restenosis and atherosclerosis models, respectively, so as to better distinguish restenosis from atherosclerotic lesions. Immunohistochemical analysis revealed that significantly higher expression of Lin28a was observed in the iliac arteries of restenosis plaques than that of atherosclerosis plaques. Immunofluorescence studies showed the colocalization of Lin28a with α‐smooth muscle actin in restenosis plaques, rather than in atherosclerosis plaques, which suggested that Lin28a might be related to the unique behaviour of vascular smooth muscle cells (VSMCs) in restenosis. To further confirm above hypothesis, Lin28a expression was up‐regulated by transfection of Lenti‐Lin28a and inhibited by Lenti‐Lin28a‐shRNA transfection in cultured VSMCs, and then the proliferation and migration capability of VSMCs were detected by EdU and Transwell assays, respectively. Results showed that the proliferation and migration of VSMCs were significantly increased in accordance with the up‐regulation of Lin28a expression, while above behaviours of VSMCs were significantly suppressed after inhibiting the expression of Lin28a. In conclusion, the up‐regulation of Lin28a exerts its modulatory effect on VSMCs’ proliferation and migration, which may play a critical role in contributing to pathological formation of restenosis.
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Affiliation(s)
- Zhiwei Zou
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Department of Endocrinology, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, China
| | - Xiaojun Zhou
- Department of Endocrinology and Metabology, The First Affiliated Hospital of Shandong First Medical University, Jinan, China.,Department of Endocrinology and Metabology, Shandong Qianfoshan Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Ruzhen Zhang
- Department of Endocrinology and Metabology, Shandong Qianfoshan Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Qian Zhang
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, China.,Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province medicine and health, Jinan, China
| | - Shan Jiang
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, China.,Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province medicine and health, Jinan, China
| | - Chunmei Xu
- Department of Endocrinology and Metabology, Shandong Qianfoshan Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Rui Zhang
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, China.,Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province medicine and health, Jinan, China
| | - Tianyue Xie
- Department of Endocrinology and Metabology, The First Affiliated Hospital of Shandong First Medical University, Jinan, China.,Department of Endocrinology and Metabology, Shandong Qianfoshan Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Huangao Zhu
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, China.,Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province medicine and health, Jinan, China
| | - Piyun Gong
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, China.,Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province medicine and health, Jinan, China
| | - Dongmei Zhang
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, China.,Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province medicine and health, Jinan, China
| | - Huimei Ma
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, China.,Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province medicine and health, Jinan, China
| | - Lin Liao
- Department of Endocrinology and Metabology, The First Affiliated Hospital of Shandong First Medical University, Jinan, China.,Department of Endocrinology and Metabology, Shandong Qianfoshan Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Jianjun Dong
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, China.,Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province medicine and health, Jinan, China
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10
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Franses JW, Philipp J, Missios P, Bhan I, Liu A, Yashaswini C, Tai E, Zhu H, Ligorio M, Nicholson B, Tassoni EM, Desai N, Kulkarni AS, Szabolcs A, Hong TS, Liss AS, Fernandez-Del Castillo C, Ryan DP, Maheswaran S, Haber DA, Daley GQ, Ting DT. Pancreatic circulating tumor cell profiling identifies LIN28B as a metastasis driver and drug target. Nat Commun 2020; 11:3303. [PMID: 32620742 PMCID: PMC7335061 DOI: 10.1038/s41467-020-17150-3] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 06/11/2020] [Indexed: 02/06/2023] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) lethality is due to metastatic dissemination. Characterization of rare, heterogeneous circulating tumor cells (CTCs) can provide insight into metastasis and guide development of novel therapies. Using the CTC-iChip to purify CTCs from PDAC patients for RNA-seq characterization, we identify three major correlated gene sets, with stemness genes LIN28B/KLF4, WNT5A, and LGALS3 enriched in each correlated gene set; only LIN28B CTC expression was prognostic. CRISPR knockout of LIN28B-an oncofetal RNA-binding protein exerting diverse effects via negative regulation of let-7 miRNAs and other RNA targets-in cell and animal models confers a less aggressive/metastatic phenotype. This correlates with de-repression of let-7 miRNAs and is mimicked by silencing of downstream let-7 target HMGA2 or chemical inhibition of LIN28B/let-7 binding. Molecular characterization of CTCs provides a unique opportunity to correlated gene set metastatic profiles, identify drivers of dissemination, and develop therapies targeting the "seeds" of metastasis.
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Affiliation(s)
- Joseph W Franses
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA, 02114, USA
| | - Julia Philipp
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA, 02114, USA
| | - Pavlos Missios
- Children's Hospital Boston, Harvard Medical School, Boston, MA, 02115, USA
| | - Irun Bhan
- Massachusetts General Hospital Division of Gastroenterology, Harvard Medical School, Boston, MA, 02114, USA
| | - Ann Liu
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA, 02114, USA
| | - Chittampalli Yashaswini
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA, 02114, USA
| | - Eric Tai
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA, 02114, USA
| | - Huili Zhu
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA, 02114, USA
| | - Matteo Ligorio
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA, 02114, USA
| | - Benjamin Nicholson
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA, 02114, USA
| | - Elizabeth M Tassoni
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA, 02114, USA
| | - Niyati Desai
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA, 02114, USA
| | - Anupriya S Kulkarni
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA, 02114, USA
| | - Annamaria Szabolcs
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA, 02114, USA
| | - Theodore S Hong
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA, 02114, USA
| | - Andrew S Liss
- Massachusetts General Hospital Department of Surgery, Harvard Medical School, Boston, MA, 02114, USA
| | | | - David P Ryan
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA, 02114, USA
| | - Shyamala Maheswaran
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA, 02114, USA
| | - Daniel A Haber
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA, 02114, USA
- Howard Hughes Medical Institute, Chevy Chase, MD, 20615, USA
| | - George Q Daley
- Children's Hospital Boston, Harvard Medical School, Boston, MA, 02115, USA
| | - David T Ting
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA, 02114, USA.
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11
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Zhang Y, Zhang Z, Huang W, Zeng J. MiR-4282 inhibits tumor progression through down-regulation of ZBTB2 by targeting LIN28B in oral squamous cell carcinoma. J Cell Physiol 2020; 235:8035-8047. [PMID: 31970774 DOI: 10.1002/jcp.29458] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 01/03/2020] [Indexed: 12/16/2022]
Abstract
Oral squamous cell carcinoma (OSCC) is the most aggressive type of head and neck cancer with an unsatisfactory 5-year survival rate. MicroRNAs are a group of small noncoding RNAs reported to serve important roles in carcinogenesis, inhibiting certain gene expression via targeting the 3'-untranslated region of messenger RNAs (mRNAs). MiR-4282 has been newly discovered to be a tumor suppressor in colorectal cancer, but it has never been studied in OSCC. The present study aimed to uncover the role of miR-4282 in OSCC. We first confirmed that miR-4282 was downregulated in OSCC and validated its prognostic significance. Through gain-of-function assays, miR-4282 was discovered to inhibit proliferation, migration, and epithelial-to-mesenchymal transition, and induce apoptosis. By mechanistic research, we predicted via bioinformatics tools and confirmed by luciferase reporter and pulldown assays that miR-4282 targeted LIN28B, an RNA-binding protein, which has been reported to regulate RNA stability in cancers. Furthermore, we confirmed the interaction between LIN28B and zinc finger and BTB domain containing 2 (ZBTB2), and validated that miR-4282 regulated mRNA stability of ZBTB2 by inhibiting LIN28B. Rescue assays proved that miR-4282 inhibited tumor progression through LIN28B/ZBTB2 axis. In vivo assays proved that miR-4282 inhibited tumor growth in OSCC. In conclusion, the present study revealed that miR-4282 inhibited tumor progression through downregulation of ZBTB2 by targeting LIN28B in OSCC cells, indicating miR-4282 as a novel biomarker for OSC.
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Affiliation(s)
- Ying Zhang
- Department of Stomatology, Quanzhou First Hospital, Fujian Medical University, Quanzhou, Fujian, China
| | - Zebiao Zhang
- Department of Stomatology, Quanzhou First Hospital, Fujian Medical University, Quanzhou, Fujian, China
| | - Wanling Huang
- Department of Stomatology, Quanzhou First Hospital, Fujian Medical University, Quanzhou, Fujian, China
| | - Jinbiao Zeng
- Department of Stomatology, Quanzhou First Hospital, Fujian Medical University, Quanzhou, Fujian, China
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12
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Li M, Chen H, Wu T. LIN28: A cancer stem cell promoter for immunotherapy in head and neck squamous cell carcinoma. Oral Oncol 2019; 98:92-95. [PMID: 31574415 DOI: 10.1016/j.oraloncology.2019.09.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 09/19/2019] [Accepted: 09/24/2019] [Indexed: 02/06/2023]
Abstract
Lin28, a highly conserved RNA-binding protein, plays an important role in differentiation, metabolism, proliferation, pluripotency, and tumourigenicity. Lin28 overexpression promotes tumour-cell proliferation and metastasis in various human cancers, including head and neck cancer. Multiple studies demonstrate that Lin28 critically contributes to anti-tumour immunity and production of cancer stem cells in head and neck squamous cell carcinoma (HNSCC). Thus, Lin28 has potential application in HNSCC treatment.
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Affiliation(s)
- Mengxue Li
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, People's Republic of China
| | - Heng Chen
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, People's Republic of China
| | - Tianfu Wu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, People's Republic of China.
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13
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Zhang J, Xu A, Miao C, Yang J, Gu M, Song N. Prognostic value of Lin28A and Lin28B in various human malignancies: a systematic review and meta-analysis. Cancer Cell Int 2019; 19:79. [PMID: 30976203 PMCID: PMC6444518 DOI: 10.1186/s12935-019-0788-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 03/16/2019] [Indexed: 12/14/2022] Open
Abstract
Background The mammalian homologs of Lin-28, Lin28 (also called Lin28A) and Lin28B, are promising cancer biomarkers. This meta-analysis was performed to evaluate the prognostic values of Lin28A and Lin28B in multiple human malignancies. Methods Systematic searches of the PubMed, Web of Science and Embase were used to identify relevant studies. Pooled hazard ratios (HRs) with 95% confidence intervals (CI) for overall survival (OS), recurrence-free survival (RFS), disease-free survival (DFS), or progression-free survival (PFS) were respectively calculated. Results 3772 Lin28A-associated patients and 1730 Lin28B-related cases were ultimately enrolled in this meta-analysis. The elevated expression level of Lin28A was significantly associated with poor OS (HR = 1.60, P < 0.001) and poor RFS/DFS/PFS (HR = 1.62, P < 0.001) in patients with malignancies. Lin28B overexpression significantly correlated with unfavorable OS (HR = 1.72, P < 0.001) and RFS/DFS/PFS (HR = 2.35, P < 0.001) of human malignancies. Conclusions Lin28A and Lin28B possess significant prognostic values in various human malignancies. Overexpression of Lin28A or Lin28B suggests poor prognosis for cancer patients.
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Affiliation(s)
- Jiayi Zhang
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029 China
| | - Aiming Xu
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029 China
| | - Chenkui Miao
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029 China
| | - Jie Yang
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029 China
| | - Min Gu
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029 China
| | - Ninghong Song
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029 China
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14
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Tang Z, Zeng Q, Li Y, Zhang X, Ma J, Suto MJ, Xu B, Yi N. Development of a radiosensitivity gene signature for patients with soft tissue sarcoma. Oncotarget 2018; 8:27428-27439. [PMID: 28404969 PMCID: PMC5432346 DOI: 10.18632/oncotarget.16194] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 01/24/2017] [Indexed: 12/17/2022] Open
Abstract
Adjuvant radiotherapy is an important clinical treatment option for the majority of sarcomas. The motivation of current study is to identify a gene signature and to predict radiosensitive patients who are most likely to benefit from radiotherapy. Using the public available data of soft tissue sarcoma from The Cancer Genome Atlas, we developed a cross-validation procedure for identifying a gene signature and predicting radiosensitive patients through. The result showed that the predicted radiosensitive patients who received radiotherapy had a significantly better survival with a reduced rate of new tumor event and disease progression. Strata analysis showed that the predicted radiosensitive patients had significantly better survival under radiotherapy independent of histologic types. A hierarchical cluster analysis was used to validate the gene signature, and the results showed the predicted sensitivity for each patient well matched the results from cluster analysis. Together, we demonstrate a radiosensitive molecular signature that can be potentially used for identifying radiosensitive patients with sarcoma.
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Affiliation(s)
- Zaixiang Tang
- Department of Biostatistics, School of Public Health, Medical College of Soochow University, Suzhou 215123, China.,Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Medical College of Soochow University, Suzhou, 215123, China.,Center for Genetic Epidemiology and Genomics, Medical College of Soochow University, Suzhou, 215123, China.,Department of Biostatistics, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Qinghua Zeng
- Drug Discovery Division, Southern Research Institute, Birmingham, AL 35294, USA
| | - Yan Li
- Department of Biostatistics, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Xinyan Zhang
- Department of Biostatistics, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Jinlu Ma
- Drug Discovery Division, Southern Research Institute, Birmingham, AL 35294, USA.,Department of Radiation Oncology, The First Hospital, Xi'an Jiaotong University, Xi'an, Shanxi, 710061, China
| | - Mark J Suto
- Drug Discovery Division, Southern Research Institute, Birmingham, AL 35294, USA
| | - Bo Xu
- Drug Discovery Division, Southern Research Institute, Birmingham, AL 35294, USA
| | - Nengjun Yi
- Department of Biostatistics, University of Alabama at Birmingham, Birmingham, AL 35294, USA
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15
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Raju K L, Augustine D, Rao RS, S V S, Haragannavar VC, Nambiar S, Prasad K, Awan KH, Patil S. Biomarkers in Tumorigenesis Using Cancer Cell Lines: A Systematic Review. Asian Pac J Cancer Prev 2017; 18:2329-2337. [PMID: 28950674 PMCID: PMC5720632 DOI: 10.22034/apjcp.2017.18.9.2329] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Cancer is a leading cause of death worldwide. Despite many research advancements in the field, the genetic changes
regulating the transformation of normal oral cells into malignant cells have not been fully elucidated. Several studies have
evaluated carcinogenesis at the molecular level. Cancer cell lines are commonly used in biomedical research because
they provide an unlimited source of cells and represent various stages of initiation and progression of carcinogenesis
in vitro. Aims: The objective of the study was to review original research articles using cancer cell lines as a tool to
understand carcinogenesis and to identify the genes involved in tumor development. Additionally, we also examined
the application of the genes as predictive biomarkers. Methods and Materials: Several databases, including PubMed,
Google Scholar, Ebsco, and Science Direct, were searched from 1985 to December 2016 using various combinations of
the following key words: “mouth neoplasm”, “cell lines”, and “tumorigenesis”. Original experimental studies published
in English were included. We excluded letters to the editor, historic reviews, and unpublished data from the analysis.
Results: There were 17 studies (in vitro) included in the analysis. There were 14 genes and 4 miRNAs involved in
malignant transformation of oral keratinocytes into cancer cells. The most commonly studied genes were p53, cyclin
D1, and hTERT. Conclusion: Additional reviews and studies are needed to identify a panel of genes specific to various
potentially malignant disorders and to aid in the early detection of oral squamous cell carcinoma (OSCC) because
tumorigenesis involves the mutation of multiple genes. Furthermore, improving advanced cost-effective diagnostic
methods may benefit the public health sector.
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Affiliation(s)
- Lizbeth Raju K
- Department of Oral and Maxillofacial Pathology, Faculty of Dental Sciences, M.S.Ramaiah University of Applied Sciences, M S R Nagar, Bangalore, Karnataka, India.
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16
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Velmurugan BK, Lee CH, Chiang SL, Hua CH, Chen MC, Lin SH, Yeh KT, Ko YC. PP2A deactivation is a common event in oral cancer and reactivation by FTY720 shows promising therapeutic potential. J Cell Physiol 2017; 233:1300-1311. [PMID: 28516459 DOI: 10.1002/jcp.26001] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2017] [Accepted: 05/09/2017] [Indexed: 12/17/2022]
Abstract
Protein phosphatase 2A (PP2A) is a tumor suppressor gene, that has been frequently deactivated in many types of cancer. However, its molecular and clinical relevance in oral squamous cell carcinoma (OSCC) remain unclear. Here we show that, PP2A deactivation is a common event in oral cancer cells and hyperphosphorylation in its tyrosine-307 (Y307) residue contributes to PP2A deactivation. PP2A restoration by FTY720 treatment reduced cell growth and decreased GSK-3β phosphorylation without significantly altering other PP2A targets. We further detected PP2A phosphorylation in 262 OSCC tissues. Increased expression of p-PP2A in the tumor tissues was significantly correlated with higher N2/N3-stage (aOR = 2.1, 95%CI: 1.2-3.8). Patients with high p-PP2A expression had lower overall survival rates than those with low expression. Hazard ratio analysis showed that, high p-PP2A expression was significantly associated with mortality density (aOR = 2.2, 95%CI: 1.2-4.0) and lower 10-year overall survival (p = 0.027) in lymph node metastasis. However, no interaction was observed between p-PP2A expression and lymph node metastasis. All our results suggest that PP2A is frequently deactivated in oral cancer and determines poor outcome, restoring its expression by FTY720 can be an alternative therapeutic approach in OSCC.
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Affiliation(s)
- Bharath K Velmurugan
- Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Vietnam
| | - Chien-Hung Lee
- Department of Public Health, College of Health Science, Kaohsiung Medical University, Kaohsuing, Taiwan.,Research Center for Environmental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Shang-Lun Chiang
- Environment-Omics-Diseases Research Center, China Medical University Hospital, Taichung, Taiwan.,Department of Health Risk Management, College of Public Health, China Medical University, Taichung, Taiwan
| | - Chun-Hung Hua
- Department of Otorhinolaryngology, China Medical University Hospital, Taichung, Taiwan
| | - Mei-Chung Chen
- Department of Pathology, Changhua Christian Hospital, Changhua, Taiwan
| | - Shu-Hui Lin
- Department of Pathology, Changhua Christian Hospital, Changhua, Taiwan.,School of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Kun-Tu Yeh
- Department of Pathology, Changhua Christian Hospital, Changhua, Taiwan.,School of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Ying-Chin Ko
- Environment-Omics-Diseases Research Center, China Medical University Hospital, Taichung, Taiwan.,Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan
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17
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Overexpression of suppressor of zest 12 is associated with cervical node metastasis and unfavorable prognosis in tongue squamous cell carcinoma. Cancer Cell Int 2017; 17:26. [PMID: 28228691 PMCID: PMC5307854 DOI: 10.1186/s12935-017-0395-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 02/04/2017] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVE Increased expression of suppressor of zest 12 (SUZ12), a core component of the polycomb repressive complex 2, contributes to human tumorigenesis and associates with patient prognosis. In the present study, we sought to investigate the expression of SUZ12 and its clinicopathological significance in primary tongue squamous cell carcinoma (TSCC). METHODS The expression of SUZ12 protein was determined by immunohistochemistry in clinical samples from a retrospective cohort of 72 patients with primary TSCC who were treated at our institution from Jan. 2007 to Dec. 2013. The potential associations between SUZ12 abundance and multiple clinicopathological parameters were assessed by Chi square test. Moreover, the effect of SUZ12 expression on patients' survival was further estimated by Kaplan-Meier and Cox regression analyses. RESULTS Our immunohistochemical staining data revealed aberrant overexpression of SUZ12 in a large subset of TSCC as compared to normal tongue mucosa. Elevated SUZ12 was found to be significantly associated with cervical nodes metastasis (P = 0.0325) and reduced overall as well as disease-free survival (Log-rank test, P = 0.0225, 0.0179, respectively). Both univariate and multivariate Cox regression analysis identified the expression status of SUZ12 (low/high) as an important independent prognostic factor for patients' survival. CONCLUSIONS Our data reveal that aberrant SUZ12 overexpression is associated with cervical nodes metastasis and reduced survival in TSCC. These findings suggest that SUZ12 might play critical roles during tongue tumorigenesis and serve as a novel biomarker with diagnostic and prognostic significance.
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