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Sameti P, Tohidast M, Amini M, Bahojb Mahdavi SZ, Najafi S, Mokhtarzadeh A. The emerging role of MicroRNA-182 in tumorigenesis; a promising therapeutic target. Cancer Cell Int 2023; 23:134. [PMID: 37438760 DOI: 10.1186/s12935-023-02972-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 06/13/2023] [Indexed: 07/14/2023] Open
Abstract
A wide range of studies have indicated that microRNAs (miRNAs), a type of small single-stranded regulatory RNAs, are dysregulated in a different variety of human cancers. Therefore, they are expected to play important roles in tumorigenesis by functioning as oncogenic (oncomiRs) or tumor-suppressive miRNAs. Subsequently, their potential as diagnostic and therapeutic targets for malignancies has attracted attention in recent years. In particular, studies have revealed the aberrant expression of miR-182 through tumorigenesis and its important roles in various aspects of malignancies, including proliferation, metastasis, and chemoresistance. Accumulating reports have illustrated that miR-182, as a dual-role regulator, directly or indirectly regulates the expression of a wide range of genes and modulates the activity of various signaling pathways involved in tumor progression, such as JAK / STAT3, Wnt / β-catenin, TGF-β, and P13K / AKT. Therefore, considering the high therapeutic and diagnostic potential of miR-182, this review aims to point out the effects of miR-182 dysregulation on the signaling pathways involved in tumorigenesis.
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Affiliation(s)
- Pouriya Sameti
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Maryam Tohidast
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Amini
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Souzan Najafi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ahad Mokhtarzadeh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
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Li Q, Zhao H, Dong W, Guan N, Hu Y, Zeng Z, Zhang H, Zhang F, Li Q, Yang J, Xiao W. RAB27A promotes the proliferation and invasion of colorectal cancer cells. Sci Rep 2022; 12:19359. [PMID: 36371494 PMCID: PMC9653419 DOI: 10.1038/s41598-022-23696-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 11/03/2022] [Indexed: 11/13/2022] Open
Abstract
Colorectal cancer (CRC) is one of the most commonly diagnosed cancer types worldwide. Despite significant advances in prevention and diagnosis, CRC is still one of the leading causes of cancer-related mortality globally. RAB27A, the member of RAB27 family of small GTPases, is the critical protein for intracellular secretion and has been reported to promote tumor progression. However, it is controversial for the role of RAB27A in CRC progression, so we explored the exact function of RAB27A in CRC development in this study. Based on the stable colon cancer cell lines of RAB27A knockdown and ectopic expression, we found that RAB27A knockdown inhibited proliferation and clone formation of SW480 colon cancer cells, whereas ectopic expression of RAB27A in RKO colon cancer cells facilitated cell proliferation and clone formation, indicating that RAB27A is critical for colon cancer cell growth. In addition, our data demonstrated that the migration and invasion of colon cancer cells were suppressed by RAB27A knockdown, but promoted by RAB27A ectopic expression. Therefore, RAB27A is identified as an onco-protein in mediating CRC development, which may be a valuable prognostic indicator and potential therapeutic target for CRC.
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Affiliation(s)
- Qingyan Li
- grid.454145.50000 0000 9860 0426Graduate School of Jinzhou Medical University, Liaoning, 121001 China ,grid.414252.40000 0004 1761 8894Senior Department of Oncology, the Fifth Medical Center of PLA General Hospital, Beijing, 100071 China ,Department of Oncology, Suining Central Hospital, Sichuan, 629300 China
| | - Huixia Zhao
- grid.414252.40000 0004 1761 8894Department of Oncology, 4th Medical Center of PLA General Hospital, Beijing, 100048 China
| | - Weiwei Dong
- grid.414252.40000 0004 1761 8894Senior Department of Oncology, the Fifth Medical Center of PLA General Hospital, Beijing, 100071 China
| | - Na Guan
- grid.454145.50000 0000 9860 0426Graduate School of Jinzhou Medical University, Liaoning, 121001 China ,grid.414252.40000 0004 1761 8894Senior Department of Oncology, the Fifth Medical Center of PLA General Hospital, Beijing, 100071 China
| | - Yanyan Hu
- grid.414252.40000 0004 1761 8894Senior Department of Oncology, the Fifth Medical Center of PLA General Hospital, Beijing, 100071 China
| | - Zhiyan Zeng
- grid.414252.40000 0004 1761 8894Department of Oncology, 4th Medical Center of PLA General Hospital, Beijing, 100048 China
| | - He Zhang
- grid.414252.40000 0004 1761 8894Department of Oncology, 4th Medical Center of PLA General Hospital, Beijing, 100048 China
| | - Fengyun Zhang
- grid.414252.40000 0004 1761 8894Department of Oncology, 4th Medical Center of PLA General Hospital, Beijing, 100048 China
| | - Qiuwen Li
- grid.414252.40000 0004 1761 8894Senior Department of Oncology, the Fifth Medical Center of PLA General Hospital, Beijing, 100071 China
| | - Jingwen Yang
- grid.414252.40000 0004 1761 8894Senior Department of Oncology, the Fifth Medical Center of PLA General Hospital, Beijing, 100071 China
| | - Wenhua Xiao
- grid.454145.50000 0000 9860 0426Graduate School of Jinzhou Medical University, Liaoning, 121001 China ,grid.414252.40000 0004 1761 8894Senior Department of Oncology, the Fifth Medical Center of PLA General Hospital, Beijing, 100071 China
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3
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Javid H, Hashemian P, Yazdani S, Sharbaf Mashhad A, Karimi-Shahri M. The role of heat shock proteins in metastatic colorectal cancer: A review. J Cell Biochem 2022; 123:1704-1735. [PMID: 36063530 DOI: 10.1002/jcb.30326] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Revised: 08/20/2022] [Accepted: 08/24/2022] [Indexed: 01/18/2023]
Abstract
Heat shock proteins (HSPs) are a large molecular chaperone family classified by their molecular weights, including HSP27, HSP40, HSP60, HSP70, HSP90, and HSP110. HSPs are likely to have antiapoptotic properties and participate actively in various processes such as tumor cell proliferation, invasion, metastases, and death. In this review, we discuss comprehensively the functions of HSPs associated with the progression of colorectal cancer (CRC) and metastasis and resistance to cancer therapy. Taken together, HSPs have numerous clinical applications as biomarkers for cancer diagnosis and prognosis and potential therapeutic targets for CRC and its related metastases.
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Affiliation(s)
- Hossein Javid
- Department of Clinical Biochemistry, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Medical Laboratory Sciences, Varastegan Institute for Medical Sciences, Mashhad, Iran
| | - Pedram Hashemian
- Jahad Daneshgahi Research Committee, Jahad Daneshgahi Institute, Mashhad, Iran
| | - Shaghayegh Yazdani
- Department of Medical Laboratory Sciences, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Medical Laboratory Sciences, Ilam University of Medical Sciences, Ilam, Iran
| | - Alireza Sharbaf Mashhad
- Department of Medical Laboratory Sciences, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mehdi Karimi-Shahri
- Department of Pathology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Pathology, School of Medicine, Gonabad University of Medical Sciences, Gonabad, Iran
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Saliba J, Coutaud B, Makhani K, Epstein Roth N, Jackson J, Park JY, Gagnon N, Costa P, Jeyakumar T, Bury M, Beauchemin N, Mann KK, Blank V. Loss of NFE2L3 protects against inflammation-induced colorectal cancer through modulation of the tumor microenvironment. Oncogene 2022; 41:1563-1575. [PMID: 35091681 PMCID: PMC8913363 DOI: 10.1038/s41388-022-02192-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 12/16/2021] [Accepted: 01/13/2022] [Indexed: 02/07/2023]
Abstract
We investigated the role of the NFE2L3 transcription factor in inflammation-induced colorectal cancer. Our studies revealed that Nfe2l3−/− mice exhibit significantly less inflammation in the colon, reduced tumor size and numbers, and skewed localization of tumors with a more pronounced decrease of tumors in the distal colon. CIBERSORT analysis of RNA-seq data from normal and tumor tissue predicted a reduction in mast cells in Nfe2l3−/− animals, which was confirmed by toluidine blue staining. Concomitantly, the transcript levels of Il33 and Rab27a, both important regulators of mast cells, were reduced and increased, respectively, in the colorectal tumors of Nfe2l3−/− mice. Furthermore, we validated NFE2L3 binding to the regulatory sequences of the IL33 and RAB27A loci in human colorectal carcinoma cells. Using digital spatial profiling, we found that Nfe2l3−/− mice presented elevated FOXP3 and immune checkpoint markers CTLA4, TIM3, and LAG3, suggesting an increase in Treg counts. Staining for CD3 and FOXP3 confirmed a significant increase in immunosuppressive Tregs in the colon of Nfe2l3−/− animals. Also, Human Microbiome Project (HMP2) data showed that NFE2L3 transcript levels are higher in the rectum of ulcerative colitis patients. The observed changes in the tumor microenvironment provide new insights into the molecular differences regarding colon cancer sidedness. This may be exploited for the treatment of early-onset colorectal cancer as this emerging subtype primarily displays distal/left-sided tumors.
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Affiliation(s)
- James Saliba
- Lady Davis Institute for Medical Research, Montreal, Canada.,Department of Medicine, McGill University, Montreal, Quebec, Canada
| | | | - Kiran Makhani
- Lady Davis Institute for Medical Research, Montreal, Canada.,Department of Medicine, McGill University, Montreal, Quebec, Canada
| | - Noam Epstein Roth
- Lady Davis Institute for Medical Research, Montreal, Canada.,Department of Medicine, McGill University, Montreal, Quebec, Canada
| | - Jennie Jackson
- Lady Davis Institute for Medical Research, Montreal, Canada.,Life Sciences Institute and Department of Microbiology and Immunology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Joo Yeoun Park
- Lady Davis Institute for Medical Research, Montreal, Canada
| | | | - Paolo Costa
- Lady Davis Institute for Medical Research, Montreal, Canada
| | - Thiviya Jeyakumar
- Goodman Cancer Institute and Departments of Oncology, Biochemistry and Medicine, McGill University, Montreal, Quebec, Canada
| | - Marina Bury
- Lady Davis Institute for Medical Research, Montreal, Canada.,De Duve Institute, UCLouvain, Brussels, Belgium
| | - Nicole Beauchemin
- Goodman Cancer Institute and Departments of Oncology, Biochemistry and Medicine, McGill University, Montreal, Quebec, Canada
| | - Koren K Mann
- Lady Davis Institute for Medical Research, Montreal, Canada.,Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec, Canada
| | - Volker Blank
- Lady Davis Institute for Medical Research, Montreal, Canada. .,Department of Medicine, McGill University, Montreal, Quebec, Canada. .,Department of Physiology, McGill University, Montreal, Quebec, Canada.
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BHMPS Inhibits Breast Cancer Migration and Invasion by Disrupting Rab27a-Mediated EGFR and Fibronectin Secretion. Cancers (Basel) 2022; 14:cancers14020373. [PMID: 35053535 PMCID: PMC8773646 DOI: 10.3390/cancers14020373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 12/17/2021] [Accepted: 01/10/2022] [Indexed: 12/04/2022] Open
Abstract
Simple Summary Numerous studies targeting Rab GTPases and its multiple effectors have been attempted since exocytosis has been shown to alter tumor malignancy by modulating cancer cell behavior and tumor microenvironment. Here, we demonstrated that BHMPS inhibits migration and invasion of breast cancer cells by blocking the interaction between Rab27a and Slp4. BHMPS interfered with vesicle trafficking and secretion by decreasing FAK and JNK activation. In addition, BHMPS suppressed tumor growth in Rab27a-overexpressing MDA-MB-231 xenograft mice. This study highlighted the importance of understanding the mechanisms of Rab27a-mediated metastasis in improving the therapeutic options for metastatic cancers. Abstract Our previous work demonstrated that (E)-N-benzyl-6-(2-(3, 4-dihydroxybenzylidene) hydrazinyl)-N-methylpyridine-3-sulfonamide (BHMPS), a novel synthetic inhibitor of Rab27aSlp(s) interaction, suppresses tumor cell invasion and metastasis. Here, we aimed to further investigate the mechanisms of action and biological significance of BHMPS. BHMPS decreased the expression of epithelial-mesenchymal transition transcription factors through inhibition of focal adhesion kinase and c-Jun N-terminal kinase activation, thereby reducing the migration and invasion of breast cancer. Additionally, knockdown of Rab27a inhibited tumor migration, with changes in related signaling molecules, whereas overexpression of Rab27a reversed this phenomenon. BHMPS effectively prevented the interaction of Rab27a and its effector Slp4, which was verified by co-localization, immunoprecipitation, and in situ proximity ligation assays. BHMPS decreased the secretion of epidermal growth factor receptor and fibronectin by interfering with vesicle trafficking, as indicated by increased perinuclear accumulation of CD63-positive vesicles. Moreover, administration of BHMPS suppressed tumor growth in Rab27a-overexpressing MDA-MB-231 xenograft mice. These findings suggest that BHMPS may be a promising candidate for attenuating tumor migration and invasion by blocking Rab27a-mediated exocytosis.
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Brunel A, Bégaud G, Auger C, Durand S, Battu S, Bessette B, Verdier M. Autophagy and Extracellular Vesicles, Connected to rabGTPase Family, Support Aggressiveness in Cancer Stem Cells. Cells 2021; 10:1330. [PMID: 34072080 PMCID: PMC8227744 DOI: 10.3390/cells10061330] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 05/20/2021] [Accepted: 05/24/2021] [Indexed: 12/22/2022] Open
Abstract
Even though cancers have been widely studied and real advances in therapeutic care have been made in the last few decades, relapses are still frequently observed, often due to therapeutic resistance. Cancer Stem Cells (CSCs) are, in part, responsible for this resistance. They are able to survive harsh conditions such as hypoxia or nutrient deprivation. Autophagy and Extracellular Vesicles (EVs) secretion are cellular processes that help CSC survival. Autophagy is a recycling process and EVs secretion is essential for cell-to-cell communication. Their roles in stemness maintenance have been well described. A common pathway involved in these processes is vesicular trafficking, and subsequently, regulation by Rab GTPases. In this review, we analyze the role played by Rab GTPases in stemness status, either directly or through their regulation of autophagy and EVs secretion.
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High expression of sperm-associated antigen 5 correlates with poor survival in ovarian cancer. Biosci Rep 2021; 40:221952. [PMID: 31985007 PMCID: PMC7007403 DOI: 10.1042/bsr20193087] [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: 09/08/2019] [Revised: 01/07/2020] [Accepted: 01/24/2020] [Indexed: 12/31/2022] Open
Abstract
OBJECTIVES Sperm-associated antigen 5 (SPAG5), a spindle-binding protein, regulates the process of mitosis. The present study focused on the relationship between SPAG5 expression and the clinicopathological characteristics and prognosis of ovarian cancer. METHODS First, we used the Gene Expression Omnibus (GEO) database to analyze SPAG5 expression in ovarian cancer and its clinical relevance. Subsequently, qPCR test was used to detect SPAG5 mRNA expression in 20 cases of ovarian cancer. The expression of SPAG5 protein in a tissue microarray containing 102 cases of ovarian cancer was detected by immunohistochemistry. Cox regression and Kaplan-Meier survival analyses were performed to identify the prognostic factors for the 102 ovarian cancer patients. RESULTS In the GEO datasets, SPAG5 mRNA expression was significantly higher in ovarian cancer tissues than that in normal ovarian tissues (P < 0.001). qPCR and immunohistochemistry showed that SPAG5 expression in ovarian cancer tissues was significantly higher than that in paracancerous tissues (P = 0.002, P < 0.001). The high expression of SPAG5 in ovarian cancer was correlated with histological type (P = 0.009), lymph node metastasis (P = 0.001), distant metastasis (P = 0.001), TNM stage (P = 0.001), and prognosis (P = 0.001). The Kaplan-Meier curve indicated that rates of disease-free survival (DFS) and overall survival (OS) were even lower in patients with high SPAG5 expression. Multivariate analysis showed that SPAG5 expression (P = 0.001) and TNM staging (P = 0.002) were independent prognostic factors for the DFS of ovarian cancer. CONCLUSIONS These results suggest that high SPAG5 expression was correlated with multiple clinicopathological features of ovarian cancer and can be used as an evaluation indicator for a poor ovarian cancer prognosis.
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Koh HM, Jang BG, Kim DC. Prognostic significance of Rab27 expression in solid cancer: a systematic review and meta-analysis. Sci Rep 2020; 10:14136. [PMID: 32839520 PMCID: PMC7445175 DOI: 10.1038/s41598-020-71104-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 08/03/2020] [Indexed: 11/09/2022] Open
Abstract
Rab27 is an essential molecule of vesicle fusion and trafficking in exosome secretion process, which plays important roles in cancer progression and metastasis. Recent studies reported that Rab27 expression is also associated with cancer prognosis. Therefore, we performed a meta-analysis to reveal the prognostic significance of Rab27 expression in solid cancer. Data were extracted by searching on PubMed, Embase and Cochrane library until February 15 2020. Pooled hazard ratio (HR) with confidence interval (CI) was calculated to evaluate the association between Rab27 expression and survival in solid cancer. Ten studies with 1434 cancer patients were including for this meta-analysis. High expression of Rab27 was associated with poor survival (HR 2.67, 95% CI 1.52-4.69, p = 0.001). High expression of Rab27A was significantly associated with lymph node metastasis (HR 1.53, 95% CI 1.00-2.34, p = 0.048). High expression of Rab27B was significantly correlated with lymph node and distant metastasis (HR 2.15, 95% CI 1.56-2.95, p < 0.001; HR 6.80, 95% CI 3.12-14.85, p < 0.001), and higher TNM stage (HR 2.55, 95% CI 1.78-3.65, p < 0.001). This meta-analysis revealed that Rab27 expression could be a potential prognostic marker in solid cancer.
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Affiliation(s)
- Hyun Min Koh
- Department of Pathology, Gyeongsang National University Changwon Hospital, Changwon, South Korea
| | - Bo Gun Jang
- Department of Pathology, Jeju National University School of Medicine, Jeju, South Korea
- Department of Pathology, Jeju National University Hospital, Jeju, South Korea
| | - Dong Chul Kim
- Department of Pathology, Gyeongsang National University School of Medicine, 79 Gangnam-ro, Jinju, 52727, South Korea.
- Department of Pathology, Gyeongsang National University Hospital, Jinju, South Korea.
- Gyeongsang Institute of Health Science, Jinju, South Korea.
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Yu F, Wu W, Liang M, Huang Y, Chen C. Prognostic Significance of Rab27A and Rab27B Expression in Esophageal Squamous Cell Cancer. Cancer Manag Res 2020; 12:6353-6361. [PMID: 32801878 PMCID: PMC7394507 DOI: 10.2147/cmar.s258940] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 06/09/2020] [Indexed: 12/29/2022] Open
Abstract
Purpose Rab27A and Rab27B, members of the Rab family of small GTPases, have aberrant expression and exert different roles in various cancers. However, their expression and potential prognostic values in esophageal squamous cell cancer (ESCC) still remain elusive. In the present study, we explored the association of Rab27A and Rab27B expression with clinical significance and prognosis in ESCC. Patients and Methods A total of 100 surgically resected ESCC tissues were examined to evaluate Rab27A and Rab27B expression levels using the immunohistochemistry method. The relationship of Rab27A and Rab27B with clinicopathological features and prognosis was analyzed. We also investigated the correlation between Rab27A and Rab27B through external and internal validation. Results High-expression Rab27A was found to be significantly correlated with N (p=0.045) and TNM (p=0.005) stage, while up-regulated Rab27B was remarkably associated with N stage (p=0.033), TNM stage (p=0.009), and differentiation (p=0.013). High expression of both Rab27A and Rab27B had a worse overall survival (OS) rate. In addition, multivariate Cox regression analyses were utilized to validate that Rab27B expression is an independent prognostic factor for unfavorable OS. Further combined analyses showed that the Rab27Alow/Blow group had a superior OS rate than the Rab27Ahigh/Blow group, Rab27Alow/Bhigh group, and Rab27Ahigh/Bhigh group. Nevertheless, the latter three groups displayed rare significance between each two comparisons. Furthermore, our data demonstrated that Rab27A expression was positively correlated with Rab27B expression, which were also verified in TCGA datasets. Conclusion Rab27A and Rab27B expression levels could be potentially novel prognostic biomarkers in ESCC.
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Affiliation(s)
- Fengqiang Yu
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, People's Republic of China
| | - Weihan Wu
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, People's Republic of China
| | - Mingqiang Liang
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, People's Republic of China
| | - Yu Huang
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, People's Republic of China
| | - Chun Chen
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, People's Republic of China
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Zhu X, Tian G, Quan J, He P, Liu J. Effects of miR‑340 overexpression and knockdown on the proliferation and metastasis of NSCLC cell lines. Int J Mol Med 2019; 44:643-651. [PMID: 31173161 PMCID: PMC6605470 DOI: 10.3892/ijmm.2019.4213] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Accepted: 05/23/2019] [Indexed: 12/19/2022] Open
Abstract
The present study aimed to investigate the potential biological functions of microRNA-340 (miR-340) in non-small cell lung cancer (NSCLC) beyond its role as a critical regulator of tumorigenesis and tumor progression. The expression levels of miR-340 and RAB27B were analyzed by reverse transcription-quantitative polymerase chain reaction. Subsequently, the protein expression levels of RAB27A, RAB27B, RAB9A, RAB11A and BRAB21 were determined by western blot analysis. The expression levels of the aforementioned proteins in NSCLC tissues were analyzed by immunohistochemistry. RAB27B, as a potential target of miR-340 was investigated via a dual-luciferase reporter assay. The proliferative ability of PC9, A549 and BEAS-2B cells was detected with a Cell Counting kit-8 assay, while the migration and invasion of the NSCLC cells were analyzed using a Transwell assay. The results revealed that the expression levels of miR-340 in the NSCLC cells were significantly decreased compared with those in normal cells (BEAS-2B cells). RAB27B was proposed as a potential target gene of miR-340, and its expression was notably increased in the NSCLC cells. miR-340 overexpression inhibited the migration and invasion of the NSCLC cells by targeting RAB27B, while the knockdown of miR-340 exerted opposite effects. On the whole, these findings indicate that the miR-340/RAB27B axis may be actively involved in the occurrence of NSCLC. Thus, miR-340 and RAB27B may be novel therapeutic targets for the treatment of NSCLC.
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Affiliation(s)
- Xidan Zhu
- Department of Laboratory Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Gang Tian
- Department of Laboratory Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Jing Quan
- Department of Laboratory Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Peng He
- Department of Laboratory Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Jinbo Liu
- Department of Laboratory Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
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11
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Koh HM, Song DH. Prognostic role of Rab27A and Rab27B expression in patients with non-small cell lung carcinoma. Thorac Cancer 2018; 10:143-149. [PMID: 30480360 PMCID: PMC6360262 DOI: 10.1111/1759-7714.12919] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 10/23/2018] [Accepted: 10/24/2018] [Indexed: 12/11/2022] Open
Abstract
Background Rab27A and Rab27B are the major components of vesicle fusion and trafficking in exosome secretion and play important roles in tumor progression and metastasis. In addition, Rab27A and Rab27B are associated with tumor prognosis. This study investigated the prognostic roles of Rab27A and Rab27B expression in patients with non‐small cell lung cancer (NSCLC). Methods Rab27A and Rab27B expression was assessed in 133 cases of NSCLC by immunohistochemistry. We evaluated the correlations between Rab27A and Rab27B expression and clinicopathological data and determined their prognostic role in NSCLC. Results Rab27A and Rab27B expression were significantly related to patient gender (P = 0.007 and 0.002, respectively) and histologic type (P = 0.009 and < 0.001, respectively), but not to patient age, smoking history, surgical method, or tumor node metastasis stage. The multivariate Cox proportional hazards regression model verified that high Rab27B expression is a prognostic factor for unfavorable disease‐specific survival (hazard ratio 2.680, 95% confidence interval 1.116–6.437; P = 0.027) in squamous cell carcinoma (SQCC). Kaplan–Meier analysis revealed significantly poorer prognosis in SQCC patients with high Rab27B expression compared to patients with low Rab27B expression (P = 0.030). Conclusion High Rab27B expression could be an unfavorable prognostic factor in patients with SQCC of the lung.
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Affiliation(s)
- Hyun Min Koh
- Department of Pathology, Gyeongsang National University Changwon Hospital, Changwon, South Korea
| | - Dae Hyun Song
- Department of Pathology, Gyeongsang National University Changwon Hospital, Changwon, South Korea.,Gyeongsang National University School of Medicine, Jinju, South Korea.,Gyeongsang Institute of Health Science, Jinju, South Korea
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12
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Jiang M, Lu H, Lu C, Geng X, Jia Y, Wang P, Qian W, Huang H, Shan X. Specific Soft-Tissue Invasion and LMP1 Expression Are Potential Indicators of Extranodal NK/T Cell Lymphoma, Nasal Type. Med Sci Monit 2018; 24:7603-7613. [PMID: 30356034 PMCID: PMC6213871 DOI: 10.12659/msm.909152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 03/21/2018] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Extranodal NK/T cell lymphoma, nasal type (ENKTL-NT) is difficult to distinguish from nasal polyps and inverted papilloma, leading to its high misdiagnosis ratio. The aim of this study was to investigate its potential prognostic indicators. MATERIAL AND METHODS Kaplan-Meier method was used to calculate overall survival (OS) rate. Cox proportional hazards regression was used to analyze risk ratios (ORs) with 95% confidence intervals (CIs). RESULTS Nasal ala infiltration and nasal floor thickness >2.0 mm or nasal septum thickness >2.5 mm were potential prognostic factors for OS (p=0.0323 and 0.0072, respectively). Cox proportional-hazards regression indicated that high LMP1 expression and the nasal floor thickness >2.0 mm or nasal septum thickness >2.5 mm were the independent risk factors for poor OS of ENKTL-NT (HR=3.0655, p=0.028; HR=2.3650, p=0.0452, respectively). In the subgroup analysis, the OS rate was lower when the nasal floor thickness >2.0 mm or nasal septum thickness >2.5 mm in the patients who had high expression of LMP1 (p=0.0651), whereas high LMP1 expression increased the risk of worse prognostic outcome in patients with deep infiltration thickness. Thus, high LMP1 expression may contribute to the tissue invasion of ENKTL-NT. CONCLUSIONS Any patient with nasal ala soft-tissue invasion, nasal floor thickness >2.0 mm/nasal septum thickness >2.5 mm on CT imaging or high LMP1 expression should prompt immediate histopathologic diagnosis to rule out ENKTL-NT in clinical practice.
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Affiliation(s)
- Min Jiang
- Department of Medical Imaging, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, P.R. China
| | - Haoyue Lu
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, P.R. China
| | - Chao Lu
- Department of Medical Imaging, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, P.R. China
| | - Xingdong Geng
- Department of Medical Imaging, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, P.R. China
| | - Yingjun Jia
- Department of Medical Imaging, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, P.R. China
| | - Peng Wang
- Department of Medical Imaging, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, P.R. China
| | - Wei Qian
- Department of Otorhinolaryngology, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, P.R. China
| | - Hao Huang
- Department of Medical Imaging, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, P.R. China
| | - Xiuhong Shan
- Department of Medical Imaging, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, Jiangsu, P.R. China
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13
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Mao Y, Wang X, Zheng F, Wang C, Tang Q, Tang X, Xu N, Zhang H, Zhang D, Xiong L, Liang J, Zhu J. The tumor-inhibitory effectiveness of a novel anti-Trop2 Fab conjugate in pancreatic cancer. Oncotarget 2017; 7:24810-23. [PMID: 27050150 PMCID: PMC5029744 DOI: 10.18632/oncotarget.8529] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Accepted: 02/28/2016] [Indexed: 12/26/2022] Open
Abstract
Human trophoblastic cell surface antigen 2 (Trop2) has been reported to act oncogenically. In this study, one-step quantitative real-time polymerase chain reaction (qPCR) test and immunohistochemistry (IHC) analysis with were employed to evaluate the relationship between Trop2 expression and the clinicopathological features of patients with PC. Then a novel anti-Trop2 Fab antibody was conjugated with Doxorubicin (DOX) to form Trop2Fab-DOX, an antibody-drug conjugate. This Trop2Fab-DOX conjugate was characterized by cell ELISA and immunofluorescence assay. MTT and wound healing analyses were used to evaluate the inhibitory effect of Trop2Fab-DOX on PC cell growth in vitro, while xenograft nude mice model was established to examine the tumor-inhibitory effects of PC in vivo. High Trop2 expression was observed in PC tissues and Trop2 expression was associated with several malignant attributes of PC patients, including overall survival. Trop2Fab-DOX can bind to the Trop2-expressing PC cells and provide an improved releasing type of DOX. In addition, Trop2Fab-DOX inhibited the proliferation and suppressed the migration of PC cells in a dose-dependent manner in vitro, while inhibited the growth of PC xenografts in vivo. Trop2 is a specific marker for PC, and a novel Trop2Fab-DOX ADC has a potent antitumor activity
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Affiliation(s)
- Yuan Mao
- Department of Oncology, Jiangsu Province Geriatric Hospital, Nanjing 210024, China
| | - Xiaoying Wang
- Huadong Medical Institute of Biotechniques, Nanjing 210002, China.,Department of Pathology and The Key Laboratory of Antibody Technique of Ministry of Health, Nanjing Medical University, Nanjing 210029, China
| | - Feng Zheng
- Huadong Medical Institute of Biotechniques, Nanjing 210002, China
| | - Changjun Wang
- Huadong Medical Institute of Biotechniques, Nanjing 210002, China
| | - Qi Tang
- Department of Pathology and The Key Laboratory of Antibody Technique of Ministry of Health, Nanjing Medical University, Nanjing 210029, China
| | - Xiaojun Tang
- Department of Pathology and The Key Laboratory of Antibody Technique of Ministry of Health, Nanjing Medical University, Nanjing 210029, China
| | - Ning Xu
- Department of Pathology and The Key Laboratory of Antibody Technique of Ministry of Health, Nanjing Medical University, Nanjing 210029, China
| | - Huiling Zhang
- Department of Gynecology and Obstetrics, Nanjing Maternal and Children Care Hospital Affiliated to Nanjing Medical University, Nanjing 210029, China
| | - Dawei Zhang
- Department of Otolaryngology-Head and Neck Surgery, The Second Affiliated Hospital of Nanjing Medical University, Nanjing 210011, China
| | - Lin Xiong
- Department of Pathology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing 210011, China
| | - Jie Liang
- Department of Pathology, Wuxi Nanjing Maternal and Children Care Hospital Affiliated to Nanjing Medical University, Wuxi 214002, China
| | - Jin Zhu
- Huadong Medical Institute of Biotechniques, Nanjing 210002, China.,Department of Pathology and The Key Laboratory of Antibody Technique of Ministry of Health, Nanjing Medical University, Nanjing 210029, China
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14
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Li X, Wang H, Ni Q, Tang Z, Ni J, Xu L, Huang H, Ni S, Feng J. Effects of silencing Rab27a gene on biological characteristics and chemosensitivity of non-small cell lung cancer. Oncotarget 2017; 8:94481-94492. [PMID: 29212243 PMCID: PMC5706889 DOI: 10.18632/oncotarget.21782] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Accepted: 09/08/2017] [Indexed: 12/13/2022] Open
Abstract
Rab27a, a member of the Rab protein family, can regulate the tumor microenvironment and promote the development of the tumor. Elevated expression of Rab27a is closely connected with many human cancers containing non-small cell lung cancer (NSCLC). But the role of Rab27a in non-small cell lung cancer and its possible mechanism is particularly unclear. In this research, we explored the effect of silencing Rab27a in vitro and in vivo, furnishing evidence that Rab27a could be a potential therapeutic target in NSCLC. Compared with corresponding control cells, silencing Rab27a had decreased ability of cell proliferation, migration and invasion in vitro and slower growth of xenograft tumors in mice. The expressions of apoptosis-associated proteins were induced with a reduction of anti-apoptotic protein in the NSCLC cells down-regulated Rab27a. Furthermore, Rab27a was associated with resistance to conventional chemotherapeutic agents. Our findings suggested that Rab27a might play a critical role in increasing chemosensitivity in NSCLC.
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Affiliation(s)
- Xia Li
- Department of Respiratory, Yancheng Third People's Hospital, Yancheng 224002, Jiangsu, China
| | - Haiying Wang
- Department of Respiratory, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu, China
| | - Qinggan Ni
- Department of Central Laboratory, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu, China
| | - Zhiyuan Tang
- Department of Respiratory, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu, China
| | - Jun Ni
- Department of Rehabilitation, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu, China
| | - Liqin Xu
- Department of Respiratory, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu, China
| | - Hua Huang
- Department of Pathology, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu, China
| | - Songshi Ni
- Department of Respiratory, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu, China
| | - Jian Feng
- Department of Respiratory, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu, China
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15
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Liu J, Gong X, Zhu X, Xue D, Liu Y, Wang P. Rab27A overexpression promotes bladder cancer proliferation and chemoresistance through regulation of NF-κB signaling. Oncotarget 2017; 8:75272-75283. [PMID: 29088864 PMCID: PMC5650419 DOI: 10.18632/oncotarget.20775] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 07/29/2017] [Indexed: 11/25/2022] Open
Abstract
Overexpression of Rab27A has been found in human cancers. However, the clinical significance and biological effects of Rab27A in bladder cancer tissues and cell lines have not been investigated. Here, we checked Rab27A protein in 87 cases of bladder cancer using immunohistochemistry. We found that Rab27A was overexpressed in 39 of 87 (44.8%) cancer cases. Significant association was found between Rab27 and invading depth (p=0.0083). We knocked down Rab27A in 5637 cell line and transfected Rab27A plasmid in BIU-87 cell line. Rab27A depletion inhibited cell growth rate and invasion while its overexpression induced cell growth and invasion. Rab27A also promoted cancer cell growth in vivo. Cell viability and Annexin V/PI staining demonstrated that Rab27A maintained cancer cell survival and reduced apoptosis rate when treated with cisplatin. JC-1 staining showed that Rab27A upregulated mitochondrial membrane potential. Western blot demonstrated that Rab27A overexpression upregulated cyclin D1, cyclin E, p-IκB, p-p65, Bcl-2, cIAP1, cIAP2 protein expression. NF-κB inhibitor BAY 11-7082 abolished the effects of Rab27 on cisplatin resistance and Bcl-2 protein. In conclusion, the present study demonstrated that Rab27A overexpression facilitates bladder cancer growth, invasion and chemoresistance in bladder cancer, possibly through regulation of NF-κB signaling pathway.
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Affiliation(s)
- Jia Liu
- Department of Urology, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - Xue Gong
- Department of Urology, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - Xingwang Zhu
- Department of Urology, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - Dongwei Xue
- Department of Urology, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - Yili Liu
- Department of Urology, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - Ping Wang
- Department of Urology, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
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16
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Shi C, Yang X, Bu X, Hou N, Chen P. Alpha B-crystallin promotes the invasion and metastasis of colorectal cancer via epithelial-mesenchymal transition. Biochem Biophys Res Commun 2017; 489:369-374. [DOI: 10.1016/j.bbrc.2017.05.070] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 05/11/2017] [Indexed: 12/18/2022]
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17
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Feng F, Zhang J, Fan X, Yuan F, Jiang Y, Lv R, Ma Y. Downregulation of Rab27A contributes to metformin-induced suppression of breast cancer stem cells. Oncol Lett 2017; 14:2947-2953. [PMID: 28928832 PMCID: PMC5588170 DOI: 10.3892/ol.2017.6542] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2016] [Accepted: 04/28/2017] [Indexed: 01/16/2023] Open
Abstract
Cancer stem cells (CSCs) are associated with tumor initiation, therapeutic resistance, relapse and metastasis. However, the underlying mechanisms CSCs use to preserve stemness are not yet fully understood. The present study demonstrated that the expression of RAB27A, member RAS oncogene family (Rab27a), which was reported to promote tumor progression by upregulating exocytosis of extracellular vesicles, was higher in mammosphere cells than in adherent MDA-MB-231 breast cancer cells. Downregulation of Rab27A inhibited mammosphere formation by decreasing the proportion of CD44+CD24-/low cells of the MDA-MB-231 cell line. Furthermore, Rab27A overexpression redistributed the cell cycle of breast (b) CSCs. The present study revealed that downregulation of Rab27A enhanced the capacity of metformin, the most widely used oral hypoglycemic drug for the treatment of type II diabetes, to inhibit mammosphere growth. Metformin reduced the expression of Rab27A dose-dependently. These data suggested that Rab27A acts as a mediator of human bCSCs by promoting the growth of mammospheres and that synergistic suppression of Rab27A, alone or in combination with metformin, holds promise for therapeutically targeting bCSCs.
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Affiliation(s)
- Feixue Feng
- Department of Clinical Laboratory, The Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, Shaanxi 712000, P.R. China
| | - Jianping Zhang
- Department of Clinical Laboratory, The XianYang Central Hospital, Xianyang, Shaanxi 712000, P.R. China
| | - Xiaoxuan Fan
- Department of Clinical Laboratory, The Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, Shaanxi 712000, P.R. China
| | - Fang Yuan
- Department of Clinical Laboratory, The Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, Shaanxi 712000, P.R. China
| | - Yinghao Jiang
- Department of Pharmacogenomics, The School of Pharmacy, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Ruihua Lv
- Department of Clinical Laboratory, The Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, Shaanxi 712000, P.R. China
| | - Yanxia Ma
- Department of Clinical Laboratory, The Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, Shaanxi 712000, P.R. China
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18
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MicroRNA-134-3p is a novel potential inhibitor of human ovarian cancer stem cells by targeting RAB27A. Gene 2017; 605:99-107. [DOI: 10.1016/j.gene.2016.12.030] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 12/27/2016] [Accepted: 12/28/2016] [Indexed: 02/07/2023]
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19
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SESN2 correlates with advantageous prognosis in hepatocellular carcinoma. Diagn Pathol 2017; 12:13. [PMID: 28118855 PMCID: PMC5260065 DOI: 10.1186/s13000-016-0591-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 12/08/2016] [Indexed: 12/12/2022] Open
Abstract
Background SESN2 plays important roles in the regulation of cell survival, cell protection, and tumor suppression. However, the relationship between SESN2 expression and the clinicopathological attributes of hepatocellular carcinoma (HCC) is barely investigated. Methods One-step quantitative reverse transcription PCR, Western blotting analysis in 15 fresh HCC tissues, and immunohistochemistry (IHC) analysis in a tissue microarray (TMA) containing 100 HCC cases were performed to examine SESN2 expression. Survival analyses by Cox regression method and Kaplan-Meier curve were performed to describe the overall survival of 100 HCC patients. Results The SESN2 expression in HCC tissues declined dramatically compared with the corresponding noncancerous tissues, and SESN2 expression was remarkably associated with HBV infection (p = 0.019), HCV infection (p = 0.001), and lymph node metastasis (p = 0.033). Survival analysis further demonstrated that SESN2 expression could serve as an independent prognostic biomarker for overall survival in univariate (p = 0.001) and multivariate analyses (p = 0.003). Conclusion The data are the first to indicate that SESN2 might be a novel prognostic marker for HCC and that elevated SESN2 expression predicts advantageous outcomes in HCC patients.
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Luo Y, Ye GY, Qin SL, Mu YF, Zhang L, Qi Y, Qiu YE, Yu MH, Zhong M. High expression of Rab3D predicts poor prognosis and associates with tumor progression in colorectal cancer. Int J Biochem Cell Biol 2016; 75:53-62. [DOI: 10.1016/j.biocel.2016.03.017] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2016] [Revised: 03/04/2016] [Accepted: 03/28/2016] [Indexed: 12/18/2022]
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21
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Yuan Z, Yu X, Ni B, Chen D, Yang Z, Huang J, Wang J, Chen D, Wang L. Overexpression of long non-coding RNA-CTD903 inhibits colorectal cancer invasion and migration by repressing Wnt/β-catenin signaling and predicts favorable prognosis. Int J Oncol 2016; 48:2675-85. [PMID: 27035092 DOI: 10.3892/ijo.2016.3447] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Accepted: 02/29/2016] [Indexed: 01/16/2023] Open
Abstract
Accumulating evidence reveals that long non-coding RNA (lncRNA) is essential for tumorigenesis and progression, but little is known about its roles and mechanisms in metastatic colorectal cancer (CRC). This study aimed to detect expression level and prognostic role of lncRNA‑CTD903 in CRC patients, which was selected based on one microarray data. The effects on cell invasion, migration and proliferation were investigated after silencing or overexpression of CTD903 in CRC cell lines. We also observed the EMT (epithelial-mesenchymal transition) phenomenon and effect on cell adhesion. The associations between CTD903 and EMT markers, such as E-cadherin, N-cadherin, β-catenin, ZEB1, ZO-1, Snail, and Twist, were determined by western blotting. Our results showed lncRNA-CTD903 expression was strongly upregulated in 115 CRC patients, comparing to adjacent normal tissues. CTD903 was proven to be an independent predicted factor of favorable prognosis in CRC patients by using multivariate Cox proportional hazards model. After knockdown of CTD903 in RKO and SW480, both cell invasion and migration increased, and cells exhibited EMT-like appearance, along with reduced adhering ability. Moreover, overexpression of CTD903 in DLD1 and HCT116 reversed these phenotypes. Furthermore, downregulation of CTD903 enhanced Wnt/β-catenin activation and subsequently increased transcription factors (Twist and Snail) expression, along with increased mesenchymal marker Vimentin and decreased epithelial marker ZO-1 level, while overexpressed CTD903 confirmed these associations. In conclusion, this study shows that LncRNA-CTD903 acts as a tumor suppressor in CRC and can inhibit cell invasion and migration through repressing Wnt/β-catenin signaling, which plays important roles in EMT and CRC metastasis.
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Affiliation(s)
- Zixu Yuan
- Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, P.R. China
| | - Xihu Yu
- Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, P.R. China
| | - Beibei Ni
- Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, P.R. China
| | - Daici Chen
- Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, P.R. China
| | - Zihuan Yang
- Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, P.R. China
| | - Jintuan Huang
- Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, P.R. China
| | - Jianping Wang
- Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, P.R. China
| | - Dianke Chen
- Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, P.R. China
| | - Lei Wang
- Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, P.R. China
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