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Sun J, Zhao J, Jiang F, Wang L, Xiao Q, Han F, Chen J, Yuan S, Wei J, Larsson SC, Zhang H, Dunlop MG, Farrington SM, Ding K, Theodoratou E, Li X. Identification of novel protein biomarkers and drug targets for colorectal cancer by integrating human plasma proteome with genome. Genome Med 2023; 15:75. [PMID: 37726845 PMCID: PMC10508028 DOI: 10.1186/s13073-023-01229-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 09/08/2023] [Indexed: 09/21/2023] Open
Abstract
BACKGROUND The proteome is a major source of therapeutic targets. We conducted a proteome-wide Mendelian randomization (MR) study to identify candidate protein markers and therapeutic targets for colorectal cancer (CRC). METHODS Protein quantitative trait loci (pQTLs) were derived from seven published genome-wide association studies (GWASs) on plasma proteome, and summary-level data were extracted for 4853 circulating protein markers. Genetic associations with CRC were obtained from a large-scale GWAS meta-analysis (16,871 cases and 26,328 controls), the FinnGen cohort (4957 cases and 304,197 controls), and the UK Biobank (9276 cases and 477,069 controls). Colocalization and summary-data-based MR (SMR) analyses were performed sequentially to verify the causal role of candidate proteins. Single cell-type expression analysis, protein-protein interaction (PPI), and druggability evaluation were further conducted to detect the specific cell type with enrichment expression and prioritize potential therapeutic targets. RESULTS Collectively, genetically predicted levels of 13 proteins were associated with CRC risk. Elevated levels of two proteins (GREM1, CHRDL2) and decreased levels of 11 proteins were associated with an increased risk of CRC, among which four (GREM1, CLSTN3, CSF2RA, CD86) were prioritized with the most convincing evidence. These protein-coding genes are mainly expressed in tissue stem cells, epithelial cells, and monocytes in colon tumor tissue. Two interactive pairs of proteins (GREM1 and CHRDL2; MMP2 and TIMP2) were identified to be involved in osteoclast differentiation and tumorigenesis pathways; four proteins (POLR2F, CSF2RA, CD86, MMP2) have been targeted for drug development on autoimmune diseases and other cancers, with the potentials of being repurposed as therapeutic targets for CRC. CONCLUSIONS This study identified several protein biomarkers to be associated with CRC risk and provided new insights into the etiology and promising targets for the development of screening biomarkers and therapeutic drugs for CRC.
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Affiliation(s)
- Jing Sun
- Department of Big Data in Health Science School of Public Health, and Center of Clinical Big Data and Analytics of The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Jianhui Zhao
- Department of Big Data in Health Science School of Public Health, and Center of Clinical Big Data and Analytics of The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Fangyuan Jiang
- Department of Big Data in Health Science School of Public Health, and Center of Clinical Big Data and Analytics of The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Lijuan Wang
- Centre for Global Health, Usher Institute, University of Edinburgh, Edinburgh, UK
| | - Qian Xiao
- Colorectal Surgery and Oncology, Key Laboratory of Cancer Prevention and Intervention, Ministry of Education, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Fengyan Han
- Department of Pathology and Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Jie Chen
- Department of Big Data in Health Science School of Public Health, and Center of Clinical Big Data and Analytics of The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Shuai Yuan
- Unit of Cardiovascular and Nutritional Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Jingsun Wei
- Colorectal Surgery and Oncology, Key Laboratory of Cancer Prevention and Intervention, Ministry of Education, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Susanna C Larsson
- Unit of Cardiovascular and Nutritional Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
- Unit of Medical Epidemiology, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - Honghe Zhang
- Department of Pathology and Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Malcolm G Dunlop
- Cancer Research UK Edinburgh Centre, Medical Research Council Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, UK
- Colon Cancer Genetics Group, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, UK
| | - Susan M Farrington
- Cancer Research UK Edinburgh Centre, Medical Research Council Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, UK
| | - Kefeng Ding
- Colorectal Surgery and Oncology, Key Laboratory of Cancer Prevention and Intervention, Ministry of Education, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Evropi Theodoratou
- Centre for Global Health, Usher Institute, University of Edinburgh, Edinburgh, UK
- Cancer Research UK Edinburgh Centre, Medical Research Council Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, UK
| | - Xue Li
- Department of Big Data in Health Science School of Public Health, and Center of Clinical Big Data and Analytics of The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.
- Centre for Global Health, Usher Institute, University of Edinburgh, Edinburgh, UK.
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Xing J, Jia Z, Li Y, Han Y. Construction of immunotherapy-related prognostic gene signature and small molecule drug prediction for cutaneous melanoma. Front Oncol 2022; 12:939385. [PMID: 35957907 PMCID: PMC9358033 DOI: 10.3389/fonc.2022.939385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 06/27/2022] [Indexed: 11/22/2022] Open
Abstract
Background Cutaneous melanoma (CM), a kind of skin cancer with a high rate of advanced mortality, exhibits a wide variety of driver and transmitter gene alterations in the immunological tumor microenvironment (TME) associated with tumor cell survival and proliferation. Methods We analyzed the immunological infiltration of TME cells in normal and malignant tissues using 469 CM and 556 normal skin samples. We used a single sample gene set enrichment assay (ssGSEA) to quantify the relative abundance of 28 cells, then used the LASSO COX regression model to develop a riskScore prognostic model, followed by a small molecule drug screening and molecular docking validation, which was then validated using qRT-PCR and IHC. Results We developed a prognosis model around seven essential protective genes for the first time, dramatically elevated in tumor tissues, as did immune cell infiltration. Multivariate Cox regression results indicated that riskScore is an independent and robust prognostic indicator, and its predictive value in immunotherapy was verified. Additionally, we identified Gabapentin as a possible small molecule therapeutic for CM. Conclusions A riskScore model was developed in this work to analyze patient prognosis, TME cell infiltration features, and treatment responsiveness. The development of this model not only aids in predicting patient response to immunotherapy but also has significant implications for the development of novel immunotherapeutic agents and the promotion of tailored treatment regimens.
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Affiliation(s)
- Jiahua Xing
- Department of Plastic and Reconstructive Surgery, The First Medical Center, Chinese PLA General Hospital, Beijing, China
- School of Medicine, Nankai University, Tianjin, China
| | - Ziqi Jia
- Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Yan Li
- Department of Plastic and Reconstructive Surgery, The First Medical Center, Chinese PLA General Hospital, Beijing, China
- *Correspondence: Yan Han, ; Yan Li,
| | - Yan Han
- Department of Plastic and Reconstructive Surgery, The First Medical Center, Chinese PLA General Hospital, Beijing, China
- *Correspondence: Yan Han, ; Yan Li,
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3
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Meng F, Chen Y, Yang M, Zhang H, Wang W. Concomitant inhibition of B7-H3 and PD-L1 expression by a novel and synthetic microRNA delivers potent antitumor activities in colorectal tumor models. Invest New Drugs 2021; 39:1267-1274. [PMID: 33909231 DOI: 10.1007/s10637-021-01123-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 04/21/2021] [Indexed: 02/07/2023]
Abstract
The families of miR-34 and miR-449 share the same seed region. However, the members showed differential effects on the expression of B7-H3 and PD-L1 in HCT-116 cells. Using miR-34a as a template, the non-seed region was modified by nucleotide alteration, yielding four synthetic microRNA (miRNA) analogs. Among those, NS-MX3, with a base alteration from G to C at the 18th locus of miR-34a, showed the most potent inhibition on both B7-H3 and PD-L1 expression. Subsequent investigations demonstrated that NS-MX3 had a broad anti-proliferation activity against several colorectal tumor cell lines and its antitumor effect was consistently reflected by tumor growth inhibition (TGI) in the HCT-116 xenograft model. In addition, NS-MX3 displayed a synergistic effect on TGI when combined with bevacizumab or regorafenib. Further analysis revealed that the superior antitumor activity of NS-MX3 was correlated to concomitant suppression of both B7-H3 and PD-L1 expression in tumor tissues. Taken together, the present study indicates that the non-seed region of miRNAs plays an important role in the regulation of checkpoint genes, thus showcasing single nucleotide alteration of the non-seed region as a promising approach to discover and develop novel immunotherapies.
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Affiliation(s)
- Fanyi Meng
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Yinshuang Chen
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Man Yang
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Hongjian Zhang
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China.
| | - Weipeng Wang
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China.
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4
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Bendova P, Pardini B, Susova S, Rosendorf J, Levy M, Skrobanek P, Buchler T, Kral J, Liska V, Vodickova L, Landi S, Soucek P, Naccarati A, Vodicka P, Vymetalkova V. Genetic variations in microRNA-binding sites of solute carrier transporter genes as predictors of clinical outcome in colorectal cancer. Carcinogenesis 2021; 42:378-394. [PMID: 33319241 DOI: 10.1093/carcin/bgaa136] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 12/01/2020] [Accepted: 12/10/2020] [Indexed: 02/06/2023] Open
Abstract
One of the principal mechanisms of chemotherapy resistance in highly frequent solid tumors, such as colorectal cancer (CRC), is the decreased activity of drug transport into tumor cells due to low expression of important membrane proteins, such as solute carrier (SLC) transporters. Sequence complementarity is a major determinant for target gene recognition by microRNAs (miRNAs). Single-nucleotide polymorphisms (SNPs) in target sequences transcribed into messenger RNA may therefore alter miRNA binding to these regions by either creating a new site or destroying an existing one. miRSNPs may explain the modulation of expression levels in association with increased/decreased susceptibility to common diseases as well as in chemoresistance and the consequent inter-individual variability in drug response. In the present study, we investigated whether miRSNPs in SLC transporter genes may modulate CRC susceptibility and patient's survival. Using an in silico approach for functional predictions, we analyzed 26 miRSNPs in 9 SLC genes in a cohort of 1368 CRC cases and 698 controls from the Czech Republic. After correcting for multiple tests, we found several miRSNPs significantly associated with patient's survival. SNPs in SLCO3A1, SLC22A2 and SLC22A3 genes were defined as prognostic factors in the classification and regression tree analysis. In contrast, we did not observe any significant association between miRSNPs and CRC risk. To the best of our knowledge, this is the first study investigating miRSNPs potentially affecting miRNA binding to SLC transporter genes and their impact on CRC susceptibility or patient's prognosis.
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Affiliation(s)
- Petra Bendova
- Department of Molecular Biology of Cancer, Institute of Experimental Medicine, Videnska, Prague, Czech Republic.,Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University, Albertov, Prague, Czech Republic.,Biomedical Centre and Department of Surgery, Faculty of Medicine in Pilsen, Charles University, Alej Svobody, Pilsen, Czech Republic
| | - Barbara Pardini
- IIGM Italian Institute for Genomic Medicine, Candiolo, Italy.,Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Italy
| | - Simona Susova
- Biomedical Centre and Department of Surgery, Faculty of Medicine in Pilsen, Charles University, Alej Svobody, Pilsen, Czech Republic.,Toxicogenomics Unit, National Institute of Public Health, Srobarova, Prague, Czech Republic
| | - Jachym Rosendorf
- Biomedical Centre and Department of Surgery, Faculty of Medicine in Pilsen, Charles University, Alej Svobody, Pilsen, Czech Republic
| | - Miloslav Levy
- Department of Surgery, Thomayer University Hospital, Videnska, Prague, Czech Republic
| | - Pavel Skrobanek
- Department of Oncology, Thomayer Hospital, Videnska, Prague, Czech Republic
| | - Tomas Buchler
- Department of Oncology, Thomayer Hospital, Videnska, Prague, Czech Republic
| | - Jan Kral
- Institute for Clinical and Experimental Medicine, IKEM, Prague, Czech Republic
| | - Vaclav Liska
- Biomedical Centre and Department of Surgery, Faculty of Medicine in Pilsen, Charles University, Alej Svobody, Pilsen, Czech Republic
| | - Ludmila Vodickova
- Department of Molecular Biology of Cancer, Institute of Experimental Medicine, Videnska, Prague, Czech Republic.,Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University, Albertov, Prague, Czech Republic.,Biomedical Centre and Department of Surgery, Faculty of Medicine in Pilsen, Charles University, Alej Svobody, Pilsen, Czech Republic
| | - Stefano Landi
- Department of Biology, University of Pisa, Via Derna, Pisa, Italy
| | - Pavel Soucek
- Biomedical Centre and Department of Surgery, Faculty of Medicine in Pilsen, Charles University, Alej Svobody, Pilsen, Czech Republic.,Toxicogenomics Unit, National Institute of Public Health, Srobarova, Prague, Czech Republic
| | - Alessio Naccarati
- IIGM Italian Institute for Genomic Medicine, Candiolo, Italy.,Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Italy
| | - Pavel Vodicka
- Department of Molecular Biology of Cancer, Institute of Experimental Medicine, Videnska, Prague, Czech Republic.,Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University, Albertov, Prague, Czech Republic.,Biomedical Centre and Department of Surgery, Faculty of Medicine in Pilsen, Charles University, Alej Svobody, Pilsen, Czech Republic
| | - Veronika Vymetalkova
- Department of Molecular Biology of Cancer, Institute of Experimental Medicine, Videnska, Prague, Czech Republic.,Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University, Albertov, Prague, Czech Republic.,Biomedical Centre and Department of Surgery, Faculty of Medicine in Pilsen, Charles University, Alej Svobody, Pilsen, Czech Republic
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5
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Sabit H, Cevik E, Tombuloglu H. Colorectal cancer: The epigenetic role of microbiome. World J Clin Cases 2019; 7:3683-3697. [PMID: 31799293 PMCID: PMC6887622 DOI: 10.12998/wjcc.v7.i22.3683] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 10/23/2019] [Accepted: 10/30/2019] [Indexed: 02/05/2023] Open
Abstract
Colorectal cancer (CRC) is the third most common cancer in men (746000 cases per year) and the second most common cancer in women globally (614000 cases per year). The incidence rate of CRC in developed countries (737000 cases per year) is higher than that in less developed countries (624000 cases per year). CRC can arise from genetic causes such as chromosomal instability and microsatellite instability. Several etiologic factors underlie CRC including age, diet, and lifestyle. Gut microbiota represent a proven cause of the disease, where they play pivotal roles in modulating and reshaping the host epigenome. Several active microbial metabolites have been found to drive carcinogenesis, invasion, and metastasis via modifying both the methylation landscape along with histone structure in intestinal cells. Gut microbiota, in response to diet, can exert both beneficial and harmful functions in humans, according to the intestinal balance of number and types of these bacteria. Although the intestinal microbial community is diverse among individuals, these microbes cumulatively produce 100-fold more proteins than the human genome itself, which calls for further studies to elaborate on the complicated interaction between these microorganisms and intestinal cells. Therefore, understanding the exact role that gut microbiota play in inducing CRC will help attain reliable strategies to precisely diagnose and treat this fatal disease.
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Affiliation(s)
- Hussein Sabit
- Department of Genetics, Institute for Medical Research and Consultations, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
| | - Emre Cevik
- Department of Genetics, Institute for Medical Research and Consultations, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
| | - Huseyin Tombuloglu
- Department of Genetics, Institute for Medical Research and Consultations, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
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6
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Gholami M, Larijani B, Sharifi F, Hasani-Ranjbar S, Taslimi R, Bastami M, Atlasi R, Amoli MM. MicroRNA-binding site polymorphisms and risk of colorectal cancer: A systematic review and meta-analysis. Cancer Med 2019; 8:7477-7499. [PMID: 31637880 PMCID: PMC6885874 DOI: 10.1002/cam4.2600] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Revised: 09/20/2019] [Accepted: 09/24/2019] [Indexed: 02/07/2023] Open
Abstract
Genetic variations in miRNAs binding site might participate in cancer risk. This study aimed to systematically review the association between miRNA‐binding site polymorphisms and colorectal cancer (CRC). Electronic literature search was carried out on PubMed, Web of Science (WOS), Scopus, and Embase. All types of observational studies till 30 November 2018 were included. Overall 85 studies (21 SNPs) from two systematic searches were included analysis. The results showed that in the Middle East population, the minor allele of rs731236 was associated with decreased risk of CRC (heterozygote model: 0.76 [0.61‐0.95]). The minor allele of rs3025039 was related to increased risk of CRC in East Asian population (allelic model: 1.25 [1.01‐1.54]). Results for rs3212986 were significant in overall and subgroup analysis (P < .05). For rs1801157 in subgroup analysis the association was significant in Asian populations (including allelic model: 2.28 [1.11‐4.69]). For rs712, subgroup analysis revealed a significant (allelic model: 1.41 [1.23‐1.61]) and borderline (allelic model: 0.92 [0.84‐1.00]) association in Chinese and Czech populations, respectively. The minor allele of rs17281995 increased risk of CRC in different genetic models (P < .05). Finally, rs5275, rs4648298, and rs61764370 did not show significant associations. In conclusion, minor allele of rs3025039, rs3212986, and rs712 polymorphisms increases the risk of CRC in the East Asian population, and heterozygote model of rs731236 polymorphism shows protective effect in the Middle East population. In Europeans, the minor allele of rs17281995 may increase the risk of CRC, while rs712 may have a protective effect. Further analysis based on population stratifications should be considered in future studies.
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Affiliation(s)
- Morteza Gholami
- Obesity and Eating Habits Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.,Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Bagher Larijani
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Farshad Sharifi
- Elderly Health Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Shirin Hasani-Ranjbar
- Obesity and Eating Habits Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Taslimi
- Department of Gastroenterology, Imam Khomeini Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Milad Bastami
- Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Rasha Atlasi
- Evidence Based Practice Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahsa M Amoli
- Metabolic Disorders Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
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The Impact of IL-16 3'UTR Polymorphism rs859 on Lung Carcinoma Susceptibility among Chinese Han Individuals. BIOMED RESEARCH INTERNATIONAL 2018; 2018:8305745. [PMID: 30671474 PMCID: PMC6323476 DOI: 10.1155/2018/8305745] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 11/29/2018] [Accepted: 12/04/2018] [Indexed: 12/20/2022]
Abstract
Lung carcinoma is the most common cancer and cause of cancer deaths among both males and females in China. Previously, genetic variants located in gene untranslated region have been well established as interfering factors in mRNA translation and confirmed playing critical roles in lung oncogenesis. However, the correlation between polymorphisms in gene 3′ untranslated region and lung cancer risk is less reported in China Han population. In this study, polymorphisms in 3′-untranslated region of IL-16, CYP24A1, and FBN1 were determined in 322 lung cancer patients and 384 healthy controls with the usage of Sequenom MassARRAY. The correlation between selected variants and lung cancer risk was examined by unconditional logistic regression analysis with or without adjustments for age, gender, smoking status, and alcohol drinking status. Additionally, stratification analysis was applied to detect the associations of SNPs with lung cancer in different subgroups. As the results, significant relationships were found between IL-16 rs859 and lung cancer susceptibility in recessive model (OR= 0.65, 95% CI: 0.44-0.96, P= 0.029) and log-additive model (OR= 0.76, 95% CI: 0.60-0.96, P= 0.019). Moreover, adjusted stratified analysis also revealed the important effects of IL-16 rs859 on lung cancer risk among individuals aged older than 50, males, and nondrinkers. IL-16 rs859 showed statistically significant evidence associated with susceptibility to lung adenocarcinoma and lung small cell carcinoma in Chinese Han population as well. Our research demonstrated that genetic variant rs859 of IL-16 3′UTR was associated with lung cancer risk in Chinese Han population and the result might be exploited as a new biomarker for lung cancer assessment and prevention.
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8
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Pirooz HJ, Jafari N, Rastegari M, Fathi‐Roudsari M, Tasharrofi N, Shokri G, Tamadon M, Sazegar H, Kouhkan F. Functional SNP in microRNA‐491‐5p binding site of MMP9 3′‐UTR affects cancer susceptibility. J Cell Biochem 2018; 119:5126-5134. [DOI: 10.1002/jcb.26471] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Accepted: 10/31/2017] [Indexed: 12/24/2022]
Affiliation(s)
| | - Niloofar Jafari
- Department of Biology, Basic Sciences FacultyShahrekord Branch, Islamic Azad UniversityShahrekordIran
| | - Mozhdeh Rastegari
- Department of Biology, Basic Sciences FacultyShahrekord Branch, Islamic Azad UniversityShahrekordIran
| | | | - Nooshin Tasharrofi
- Stem Cell Technology Research CenterTehranIran
- Faculty of PharmacyLorestan University of Medical SciencesKhorramabadIran
- Student Research CommiteeLorestan Universsity of Medical SciencesKhorramabadIran
| | | | | | - Hossein Sazegar
- Department of Biology, Basic Sciences FacultyShahrekord Branch, Islamic Azad UniversityShahrekordIran
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9
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Vodicka P, Pardini B, Vymetalkova V, Naccarati A. Polymorphisms in Non-coding RNA Genes and Their Targets Sites as Risk Factors of Sporadic Colorectal Cancer. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 937:123-49. [PMID: 27573898 DOI: 10.1007/978-3-319-42059-2_7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Colorectal cancer (CRC) is a complex disease that develops as a consequence of both genetic and environmental risk factors in interplay with epigenetic mechanisms, such as microRNAs (miRNAs). CRC cases are predominantly sporadic in which the disease develops with no apparent hereditary syndrome. The last decade has seen the progress of genome-wide association studies (GWAS) that allowed the discovery of several genetic regions and variants associated with weak effects on sporadic CRC. Collectively these variants may enable a more accurate prediction of an individual's risk to the disease and its prognosis. However, the number of variants contributing to CRC is still not fully explored.SNPs in genes encoding the miRNA sequence or in 3'UTR regions of the corresponding binding sites may affect miRNA transcription, miRNA processing, and/or the fidelity of the miRNA-mRNA interaction. These variants could plausibly impact miRNA expression and target mRNA translation into proteins critical for cellular integrity, differentiation, and proliferation.In the present chapter, we describe the different aspects of variations related to miRNAs and other non-coding RNAs (ncRNAs) and evidence from studies investigating these candidate genetic alterations in support to their role in CRC development and progression.
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Affiliation(s)
- Pavel Vodicka
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Videnska 1083, 142 00, Prague, Czech Republic. .,Institute of Biology and Medical Genetics, 1st Medical Faculty, Charles University, Albertov 4, 128 00, Prague, Czech Republic. .,Biomedical Centre, Faculty of Medicine in Pilsen, Charles University in Prague, 323 00, Pilsen, Czech Republic.
| | - Barbara Pardini
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Videnska 1083, 142 00, Prague, Czech Republic.,Human Genetics Foundation - Torino (HuGeF), via Nizza 52, 10126, Turin, Italy
| | - Veronika Vymetalkova
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Videnska 1083, 142 00, Prague, Czech Republic.,Institute of Biology and Medical Genetics, 1st Medical Faculty, Charles University, Albertov 4, 128 00, Prague, Czech Republic
| | - Alessio Naccarati
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Videnska 1083, 142 00, Prague, Czech Republic.,Human Genetics Foundation - Torino (HuGeF), via Nizza 52, 10126, Turin, Italy
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10
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Petkevicius V, Salteniene V, Juzenas S, Wex T, Link A, Leja M, Steponaitiene R, Skieceviciene J, Kupcinskas L, Jonaitis L, Kiudelis G, Malfertheiner P, Kupcinskas J. Polymorphisms of microRNA target genes IL12B, INSR, CCND1 and IL10 in gastric cancer. World J Gastroenterol 2017; 23:3480-3487. [PMID: 28596683 PMCID: PMC5442083 DOI: 10.3748/wjg.v23.i19.3480] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 02/23/2017] [Accepted: 03/21/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To evaluate associations between miRNA target genes IL12B, INSR, CCND1 and IL10 polymorphisms and gastric cancer (GC) in European population.
METHODS Gene polymorphisms were analyzed in 508 controls and 474 GC patients from 3 tertiary centers in Germany, Lithuania and Latvia. Controls were patients from the out-patient departments, who were referred for upper endoscopy because of dyspeptic symptoms and had no history of previous malignancy. Gastric cancer (GC) patients had histopathological verification of gastric adenocarcinoma. Genomic DNA was extracted using salting out method from peripheral blood mononuclear cells. IL12B T>G (rs1368439), INSR T>C (rs1051690), CCND1 A>C (rs7177) and IL10 T>C (rs3024498) SNPs were genotyped by the real-time polymerase chain reaction. Associations between gene polymorphism and GC were evaluated using multiple logistic regression analysis with adjustment for sex, age and country of birth.
RESULTS We observed similar distribution of genotypes and allelic frequencies of all polymorphisms between GC patients and controls except of INSR rs1051690. The frequency of the T allele of INSR gene was significantly higher in GC patients than in controls (23.26% and 19.19% respectively, P = 0.028). CT genotype was also more prevalent in patients compared to control group (38.48% and 30.12% respectively, P < 0.021). Logistic regression analysis revealed that only one polymorphism (rs1051690 in INSR gene) was associated with increased risk of GC. Carriers of CT genotype had higher odds of GC when compared to CC genotype (OR = 1.45, 95%PI: 1.08-1.95, P = 0.01). Similar association was observed in a dominant model for INSR gene, where comparison of TT+CT vs CC genotypes showed an increased risk of GC (OR = 1.44, 95%PI: 1.08-1.90, P = 0.01). Other analyzed SNPs were not associated with the presence of GC.
CONCLUSION INSR rs1051690 SNP is associated with increased risk of GC, while polymorphisms in IL12B, CCND1 and IL10 genes are not linked with the presence of GC.
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MiR-146a rs2910164 polymorphism increases the risk of digestive system cancer: A meta-analysis. Clin Res Hepatol Gastroenterol 2017; 41:93-102. [PMID: 27477122 DOI: 10.1016/j.clinre.2016.06.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Accepted: 06/29/2016] [Indexed: 02/04/2023]
Abstract
AIM There is merging evidence suggesting that the miR-146a polymorphism might be associated with susceptibility to digestive system cancer. However, previous published studies have failed to achieve a definitive conclusion. To address this issue, an updated meta-analysis was performed. METHODS A comprehensive electronic search was conducted using the following source to identify the eligible studies: PubMed, Embase, China BioMedicine, the Cochrane Library, and Google Scholar. Odds ratios and its corresponding 95% confidence interval (CI) was used in the quantitative synthesis. RESULTS The database search identified 1344 eligible studies, of which 32 (comprising 12,541 cases and 15,925 controls) were included. The results indicate that the miR-146a rs2910164 polymorphism was significantly associated with increased risk of digestive system cancer in heterozygote comparison (GC vs. CC: OR=1.15, 95% CI: 1.02-1.30, P=0.02), and recessive model (GG vs. GC+CC: OR=1.11, 95% CI: 1.04-1.17, P=0.006). Subgroup analysis by cancer site revealed increased risk in gastric cancer above heterozygote comparison (GG vs. GC: OR=1.13, 95% CI: 1.02-1.25, P=0.02), and recessive model (GG vs. GC+CC: OR=1.15, 95% CI: 1.04-1.26, P=0.006). Similarly, increased cancer risk was observed in hepatocellular carcinoma when compared with homozygote comparison (GG vs. CC: OR=1.21, 95% CI: 1.04-1.42, P=0.02), heterozygote comparison (GC vs. CC: OR=1.15, 95% CI: 1.02-1.29, P=0.02), and dominant model (GG+GC vs. CC: OR=1.16, 95% CI: 1.04-1.29, P=0.009). When stratified by ethnicity and quality score, increased cancer risks were also observed among Asians, Caucasians and high quality studies subgroup. CONCLUSION The current study revealed that miR-146a G/C genetic polymorphism was more likely to be associated with digestive system cancer risk.
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Xu C, Gu L. The diagnostic effect of serum miR-196b as biomarker in colorectal cancer. Biomed Rep 2016; 6:39-45. [PMID: 28123705 PMCID: PMC5244757 DOI: 10.3892/br.2016.815] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 11/11/2016] [Indexed: 12/11/2022] Open
Abstract
The microRNA, miR-196b, serves a role in normal cell differentiation, proliferation and tumorigenesis of different types of cancer. The aim of the present study was to explore the serum expression of miR-196b in colorectal cancer (CRC) and its correlation with clinicopathological features. Sera samples were obtained from 103 patients with CRC, 51 patients with colorectal adenoma (Ad) and 100 healthy individuals for the present study. The serum expression of miR-196b in sera samples of the three cohorts was detected using reverse transcription-quantitative polymerase chain reaction. The diagnostic value of miR-196b in the serum of the patients with CRC was evaluated by receiver operating characteristic (ROC) curve and survival analysis, using the Kaplan-Meier method, which was performed with the data from a 5-year follow-up. The expression of miR-196b in the serum of patients with CRC was significantly higher compared with that in Ad patients or healthy individuals (all P<0.001), and the overexpression of serum miR-196b was clearly associated with lymph node invasion, differentiation, and the tumor-lymph nodes-metastasis stage (all P<0.05). ROC curve analysis demonstrated that, comparing patients with CRC with healthy individuals, the area under the curve of serum miR-196b was 0.8135, and its specificity and sensitivity were 63 and 87.38%, respectively, at a diagnostic threshold of −4.785. Patients with CRC of miR-196b-high status had shorter overall survival and disease-free survival rates compared with those of miR-196b-low status. In conclusion, the results of the present study demonstrated that serum miR-196b is upregulated in CRC, and may have an application as a diagnostic and prognostic biomarker for patients with CRC.
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Affiliation(s)
- Chunjie Xu
- Department of Gastrointestinal Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
| | - Lei Gu
- Department of Gastrointestinal Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
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Cao J, Luo C, Yan R, Peng R, Wang K, Wang P, Ye H, Song C. rs15869 at miRNA binding site in BRCA2 is associated with breast cancer susceptibility. Med Oncol 2016; 33:135. [DOI: 10.1007/s12032-016-0849-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Accepted: 10/27/2016] [Indexed: 12/13/2022]
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Cao J, Luo C, Peng R, Guo Q, Wang K, Wang P, Ye H, Song C. MiRNA-binding site functional polymorphisms in DNA repair genes RAD51, RAD52, and XRCC2 and breast cancer risk in Chinese population. Tumour Biol 2016; 37:10.1007/s13277-016-5459-2. [PMID: 27726100 DOI: 10.1007/s13277-016-5459-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 09/23/2016] [Indexed: 01/14/2023] Open
Abstract
RAD51, RAD52, and XRCC2 are all involved in DNA homologous recombinational repair, and there are interactions among those genes. Polymorphisms in 3'-UTR of DNA repair genes may change DNA repair capacity by regulating gene expression. However, potential regulatory variants affecting their expression remain largely unexplored. Five miRNA-binding site SNPs (rs7180135 and rs45549040 in RAD51, rs1051669 and rs7963551 in RAD52 and rs3218550 in XRCC2) selected by bioinformatics method were genotyped in 498 breast cancer (BC) patients and 498 matched controls in Chinese population. Association between SNPs and BC risk was analyzed by adjusted odds ratios (ORs) and 95 % confidence intervals (CIs) in unconditional logistic regression model. Quantitative real-time (qRT) PCR and Western Blot assays were used to calculate the relative expression of RAD52 in recombinant plasmid-pGenesil-1-let-7b group and let-7b-inhibitor group. Gene-reproductive factors interactions were evaluated by multifactor dimensionality reduction (MDR) method. We found that individuals with AC (OR 0.684, 95%CI 0.492-0.951) and CC (OR 0.317, 95%CI 0.200-0.503) genotypes of rs7963551 had a significantly lower risk of breast cancer and qRT-PCR and Western Blot revealed that let-7b might downregulate the expression of RAD52 in MCF-7 and SKBR-3 cells. A significant interaction between the number of pregnancy (≥2) and rs7963551 (Ars7963551) was found to increase breast cancer risk by 2.63-fold (OR 2.63; 95%CI 2.03-3.42). In summary, the miRNA-binding SNPs in DNA repair genes RAD51, RAD52, and XRCC2 and their interaction with reproductive factors might play important roles in the development of BC, and let-7b might downregulate RAD52 expression in MCF-7 and SKBR-3 cells.
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Affiliation(s)
- Jingjing Cao
- Department of Epidemiology and Statistics, College of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, People's Republic of China
| | - Chenglin Luo
- Department of Biological Sciences, The University of Texas at El Paso, El Paso, TX, 79968, USA
| | - Rui Peng
- Department of Epidemiology and Statistics, College of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, People's Republic of China
| | - Qiaoyun Guo
- Department of Epidemiology and Statistics, College of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, People's Republic of China
| | - Kaijuan Wang
- Department of Epidemiology and Statistics, College of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, People's Republic of China
- Henan Key Laboratory of Tumor Epidemiology, Zhengzhou, 450001, Henan, People's Republic of China
| | - Peng Wang
- Department of Epidemiology and Statistics, College of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, People's Republic of China
- Henan Key Laboratory of Tumor Epidemiology, Zhengzhou, 450001, Henan, People's Republic of China
| | - Hua Ye
- Department of Epidemiology and Statistics, College of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, People's Republic of China
- Henan Key Laboratory of Tumor Epidemiology, Zhengzhou, 450001, Henan, People's Republic of China
| | - Chunhua Song
- Department of Epidemiology and Statistics, College of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, People's Republic of China.
- Henan Key Laboratory of Tumor Epidemiology, Zhengzhou, 450001, Henan, People's Republic of China.
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Hashemi M, Moradi N, Ziaee SAM, Narouie B, Soltani MH, Rezaei M, Shahkar G, Taheri M. Association between single nucleotide polymorphism in miR-499, miR-196a2, miR-146a and miR-149 and prostate cancer risk in a sample of Iranian population. J Adv Res 2016; 7:491-8. [PMID: 27222754 DOI: 10.1016/j.jare.2016.03.008] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 03/23/2016] [Accepted: 03/24/2016] [Indexed: 01/29/2023] Open
Abstract
MicroRNAs (miRNAs) play an important role in regulating gene expression at the post-transcriptional level and are involved in numerous physiological processes. Accumulating evidence suggests that single-nucleotide polymorphisms (SNPs) in human miRNA genes may affect miRNA biogenesis pathway and influence the susceptibility to several diseases such as cancer. The present study aimed to evaluate the impact of miR-499 rs3746444, miR-196a2 rs11614913, miR-149 rs2292832, and miR-146a rs2910164 polymorphisms on prostate cancer (PCa) risk in a sample of Iranian population. This case-control study was done on 169 patients with pathologically confirmed PCa and 182 benign prostatic hyperplasia (BPH). The genotyping assays were done using T-ARMS-PCR or PCR-RFLP methods. The findings indicated that CC genotype of miR-499 rs3746444 polymorphism increased the risk of PCa (OR = 1.76, 95% CI = 1.12-2.79, P = 0.019) compared to TT genotype. No statistically significant association was found between miR-196a2 rs11614913, miR-149 rs2292832, and miR-146a rs2910164 polymorphisms and PCa risk. In summary, the findings indicated that miR-499 rs3746444 polymorphism increased the risk of PCa in an Iranian population. Further studies with larger sample sizes and different ethnicities are necessary to verify the findings of the present study.
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Affiliation(s)
- Mohammad Hashemi
- Cellular and Molecular Research Center, Zahedan University of Medical Sciences, Zahedan, Iran; Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Nazanin Moradi
- Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Seyed Amir Mohsen Ziaee
- Urology and Nephrology Research Center, Department of Urology, Shahid Labbafinejad Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Behzad Narouie
- Urology and Nephrology Research Center, Department of Urology, Shahid Labbafinejad Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Hosein Soltani
- Urology and Nephrology Research Center, Department of Urology, Shahid Labbafinejad Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Rezaei
- Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Ghazaleh Shahkar
- Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Mohsen Taheri
- Genetics of Non Communicable Disease Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
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CD86 polymorphism affects pneumonia-induced sepsis by decreasing gene expression in monocytes. Inflammation 2015; 38:879-85. [PMID: 25129060 DOI: 10.1007/s10753-014-9997-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Sepsis, a clinical syndrome occurring in patients following infection or injury, is a leading cause of morbidity and mortality worldwide. CD86 (B7-2) is a costimulatory molecule on antigen-presenting cells and plays critical roles in immune responses. In the current study, we investigated the association of two CD86 polymorphisms, rs1129055G/A and rs17281995G/C, with susceptibility to pneumonia-induced sepsis and examined the effects of these two polymorphisms on gene expression in monocytes. CD86 rs1129055G/A and rs17281995G/C were identified in 192 pneumonia-induced septic patients and 201 healthy controls. Data showed that frequencies of the rs1129055GA and AA genotypes were significantly lower in patients than in controls (odds ratio [OR]=0.57, 95 % confidence interval [CI], 0.35-0.93, p=0.023, and OR=0.40, 95 % CI, 0.23-0.71, p=0.002). Interestingly, the other polymorphism, rs17281995G/C, revealed significantly increased numbers in pneumonia-induced sepsis compared to controls (OR=1.85, 95 % CI, 1.07-3.20, p=0.025). Further analyses about CD86 gene expression revealed that both messenger RNA (mRNA) and protein levels of CD86 were downregulated in monocytes from controls carrying rs17281995GC genotype than those carrying wild-type rs17281995GG genotype (p=0.022 and p=0013). These results suggest that polymorphisms in CD86 gene have diverse effects on the pathogenesis of pneumonia-induced sepsis, in which rs17281995G/C may increase the risk of the disease by interfering gene expression of CD86 in monocytes.
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Wagner M, Sobczyński M, Karabon L, Bilińska M, Pokryszko-Dragan A, Pawlak-Adamska E, Cyrul M, Kuśnierczyk P, Jasek M. Polymorphisms in CD28, CTLA-4, CD80 and CD86 genes may influence the risk of multiple sclerosis and its age of onset. J Neuroimmunol 2015; 288:79-86. [DOI: 10.1016/j.jneuroim.2015.09.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 09/07/2015] [Accepted: 09/10/2015] [Indexed: 01/01/2023]
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Wang Y, Wei T, Xiong J, Chen P, Wang X, Zhang L, Gao L, Zhu J. Association Between Genetic Polymorphisms in the Promoter Regions of Let-7 and Risk of Papillary Thyroid Carcinoma: A Case-Control Study. Medicine (Baltimore) 2015; 94:e1879. [PMID: 26512603 PMCID: PMC4985417 DOI: 10.1097/md.0000000000001879] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
UNLABELLED The aim of this study was to investigate the association between 2 polymorphisms (ie, rs10877887 and rs13293512) in the promoter regions of let-7 and the risk of papillary thyroid carcinoma (PTC).A case-control study of 618 PTC patients and 562 controls was conducted. The rs10877887 polymorphism was genotyped by using polymerase chain reaction-restriction fragment length polymorphism and the rs13293512 polymorphism was genotyped by using a TaqMan Genotyping Assay. The results were confirmed by DNA sequencing.The rs10877887 polymorphism had reduced risks of PTC in heterozygous comparison, dominant model, and overdominant model (TC vs TT: adjusted odds ratio [OR] = 0.73, 95% confidence interval [95% CI] = 0.58-0.94, P = 0.01; TC/CC vs TT: adjusted OR = 0.79, 95% CI = 0.63-1.00, P = 0.047; TC vs TT/CC: adjusted OR = 0.73, 95% CI = 0.57-0.92, P = 0.007, respectively). Stratified analyses showed that PTC patients carrying the rs10877887 CC genotype were more likely to have multiple tumors (adjusted OR = 1.71, 95% CI = 1.03-2.86, P = 0.04), and PTC patients carrying the rs13293512 TC + CC or CC were more likely to develop N0 status (TC/CC vs TT: adjusted OR = 0.64, 95% CI = 0.43-0.94, P = 0.02; CC vs TC/TT adjusted OR = 0.50, 95% CI = 0.33-0.77, P = 0.001, respectively).Our study suggests that the rs10877887 polymorphism may be associated with the risk of PTC and the rs13293512 polymorphism may correlate to lymph node metastasis in PTC.
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Affiliation(s)
- Yichao Wang
- From the Department of Thyriod Surgery (YW, TW, XW, JZ); Department of Pancreatic Surgery (JX); and Department of Laboratory of Molecular and Translational Medicine, West China Institute of Women and Children's Health, West China Second University Hospital, Sichuan University, Sichuan Province, China (PC, LZ, LG)
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Mahmoudi T, Majidzadeh-A K, Karimi K, Karimi N, Farahani H, Dabiri R, Nobakht H, Dolatmoradi H, Arkani M, Zali MR. An exon variant in insulin receptor gene is associated with susceptibility to colorectal cancer in women. Tumour Biol 2015; 36:3709-15. [PMID: 25557790 DOI: 10.1007/s13277-014-3010-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2014] [Accepted: 12/23/2014] [Indexed: 12/13/2022] Open
Abstract
Given the role of insulin resistance in colorectal cancer (CRC), we explored whether genetic variants in insulin (INS), insulin receptor (INSR), insulin receptor substrate 1 (IRS1), insulin receptor substrate 2 (IRS2), insulin-like growth factor 1 (IGF1), and insulin-like growth factor binding protein 3 (IGFBP3) genes were associated with CRC risk. A total of 600 subjects, including 261 cases with CRC and 339 controls, were enrolled in this case-control study. Six polymorphisms in INS (rs689), INSR (rs1799817), IRS1 (rs1801278), IRS2 (rs1805097), IGF1 (rs5742612), and IGFBP3 (rs2854744) genes were genotyped using PCR-RFLP method. No significant difference was observed for INS, INSR, IRS1, IRS2, IGF1, and IGFBP3 genes between the cases and controls. However, the INSR rs1799817 "TT + CT" genotype and "CT" genotype compared with "CC" genotype occurred more frequently in the women with CRC than women controls (P = 0.007; OR = 1.93, 95 %CI = 1.20-3.11 and P = 0.002, OR = 2.15, 95 %CI = 1.31-3.53, respectively), and the difference remained significant after adjustment for confounding factors including age, BMI, smoking status, NSAID use, and family history of CRC (P = 0.018; OR = 1.86, 95 %CI = 1.11-3.10 and P = 0.004, OR = 2.18, 95 %CI = 1.28-3.71, respectively). In conclusion, to our knowledge, this study indicated for the first time that the INSR rs1799817 TT + CT genotype and CT genotype compared with the CC genotype had 1.86-fold and 2.18-fold increased risks for CRC among women, respectively. Furthermore, this finding is in line with previous studies which found significant associations between other variants of the INSR gene and CRC risk. Nevertheless, further studies are required to confirm our findings.
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Affiliation(s)
- Touraj Mahmoudi
- Department of Cancer, Gastroenterology and Liver Diseases Research Center, Shahid Beheshti University of Medical Sciences, Velenjak, Shahid Chamran Highway, Tehran, 1985711151, Iran,
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Wu D, Tang R, Qi Q, Zhou X, Zhou H, Mao Y, Li R, Liu C, Wang W, Hua D, Zhang X. Five functional polymorphisms of B7/CD28 co-signaling molecules alter susceptibility to colorectal cancer. Cell Immunol 2014; 293:41-8. [PMID: 25497975 DOI: 10.1016/j.cellimm.2014.11.006] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Revised: 11/26/2014] [Accepted: 11/28/2014] [Indexed: 02/07/2023]
Abstract
Polymorphisms within the 3'-untranslated region (3'-UTR) of genes have been proved to contribute to the risk of cancers. Here, we determined 16 putatively functional polymorphisms in the 3'-UTR of 11 B7/CD28 genes in 382 colorectal cancer patients and 714 healthy controls. Statistical analysis revealed that ICOS rs4404254-C-allele carriers (p=0.0014), rs1559931-A-allele carriers (p=0.0027), and rs4675379-C-allele carriers (p=0.026) were significantly fewer in patients than those in controls. B7-H4-rs13505-GG homozygotes were more prevalent in patients (p=0.03). CD80-rs7628626-GT was apparently less in the patients with lymph node metastasis (p=0.004) or in advanced stage (p=0.037). Furthermore, we found that these polymorphisms impacted the regulatory role of miR-21-3p, miR-186-5p, miR-323b-5p, miR-1207-5p, miR-1279, miR-2117, and miR-3692-3p in the expression of the B7/CD28 molecules. Our findings suggest that rs7628626, rs13505, rs4404254, rs1559931, and rs4675379, through disrupting the regulatory role of miRNAs in the expression of B7/CD28 molecules, contribute to the occurrence and progress of colorectal cancer.
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Affiliation(s)
- Dongjuan Wu
- Center of Drug Metabolism and Pharmacokinetics, College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China; Department of Oncology, The Fourth Affiliated Hospital of Soochow University, Wuxi 214062, China
| | - Rong Tang
- Center of Drug Metabolism and Pharmacokinetics, College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China
| | - Qinghua Qi
- Department of Oncology, The Fourth Affiliated Hospital of Soochow University, Wuxi 214062, China
| | - Xinru Zhou
- Center of Drug Metabolism and Pharmacokinetics, College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China
| | - Huan Zhou
- Department of Clinical Laboratory, The Fourth Affiliated Hospital of Soochow University, Wuxi 214062, China
| | - Yong Mao
- Department of Oncology, The Fourth Affiliated Hospital of Soochow University, Wuxi 214062, China
| | - Rui Li
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Cuiping Liu
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Weipeng Wang
- Center of Drug Metabolism and Pharmacokinetics, College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China.
| | - Dong Hua
- Department of Oncology, The Fourth Affiliated Hospital of Soochow University, Wuxi 214062, China.
| | - Xueguang Zhang
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China
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Xie WQ, Tan SY, Wang XF. Effect of a common genetic variant microRNA-146a rs2910164 on colorectal cancer: a meta-analysis. J Dig Dis 2014; 15:647-53. [PMID: 25283877 DOI: 10.1111/1751-2980.12201] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVE There is emerging evidence that the microRNA-146a (miR-146a) rs2910164 polymorphism might be associated with the susceptibility to colorectal cancer (CRC). However, previous published studies have failed to achieve a definitive conclusion. We aimed to address this issue in an updated meta-analysis. METHODS A comprehensive literature search was conducted in PubMed, Embase, China BioMedicine, the Cochrane Library and Google Scholar to identify eligible studies. Case-control studies written in English that evaluated the association between miR-146a polymorphism and CRC were included. Odds ratio and 95% confidence interval were calculated in the quantitative synthesis. RESULTS Overall seven case-control studies including a total of 2978 cases and 3576 cancer-free or healthy controls were enrolled in the meta-analysis. The results indicated that there was no association between miR-146a G/C rs2910164 polymorphism and CRC risk either in the overall analysis or among Asians, when stratified on the basis of ethnicity. CONCLUSION miR-146a G/C genetic polymorphism was not related to the susceptibility to CRC.
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Affiliation(s)
- Wen Qun Xie
- Key Laboratory of Digestive Disease, Department of Digestive Disease, Renmin Hospital of Wuhan University, Wuhan, China
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Geng P, Zhao X, Xiang L, Liao Y, Wang N, Ou J, Xie G, Liu C, Li J, Li H, Zeng R, Liang H. Distinct role of CD86 polymorphisms (rs1129055, rs17281995) in risk of cancer: evidence from a meta-analysis. PLoS One 2014; 9:e109131. [PMID: 25369324 PMCID: PMC4219668 DOI: 10.1371/journal.pone.0109131] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2014] [Accepted: 09/08/2014] [Indexed: 11/30/2022] Open
Abstract
Background and Purpose Previous studies concerning the role of CD86 polymorphisms (rs1129055 and rs17281995) in cancer fail to provide compelling evidence. The aim of this study was to investigate the role of common polymorphisms in the risk of cancer by meta-analysis. Methods By using the search terms Cluster of Differentiation 86/CD86/B7-2/polymorphism/polymorphisms/cancer, we searched PubMed, Embase, CNKI, and Wanfang and identified four studies for rs1129055 (2137 subjects) and rs17281995 (2856 subjects) respectively. Cancer risk was estimated by odds ratio (OR) and 95% confidence interval (95% CI). Major Findings Overall, we observed significant reduced risk of cancer in relation to rs1129055. Compared with the individuals with AA genotype, the individuals with GG genotype appeared to have 62% decreased risk to develop cancer (GG versus AA: OR, 0.62; 95% CI, 0.49–0.79; Phet., 0.996). Similar effects were indicated in the G versus A allele model and the GG versus GA+AA genetic model (OR, 0.83; 95% CI, 0.74–0.93; Phet., 0.987; OR, 0.63; 95% CI, 0.50–0.79; Phet., 0.973). In addition, we found genotypes of rs17281995 had a major effect on overall cancer risk (CC versus GG: OR, 2.38; 95% CI, 1.43–3.95; Phet., 0.433; C versus G: OR, 1.23; 95% CI, 1.06–1.43; Phet., 0.521; CC versus GC+GG: OR, 2.38; 95% CI, 1.45–3.93; Phet., 0.443). The association was also observed in Caucasians and colorectal cancer. No obvious publication bias was detected in this meta-analysis. Conclusions These data reveal that rs1129055 may have protective effects on cancer risk in Asians and that rs17281995 is likely to contribute to risk of cancer, particularly colorectal cancer in Caucasians.
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Affiliation(s)
- Peiliang Geng
- Department of Oncology and Southwest Cancer Center, Southwest Hospital Third Military Medical University, Chongqing, China
| | - Xiaoxin Zhao
- Department of Oncology and Southwest Cancer Center, Southwest Hospital Third Military Medical University, Chongqing, China
| | - Lisha Xiang
- Department of Oncology and Southwest Cancer Center, Southwest Hospital Third Military Medical University, Chongqing, China
| | - Yunmei Liao
- Department of Oncology and Southwest Cancer Center, Southwest Hospital Third Military Medical University, Chongqing, China
| | - Ning Wang
- Department of Oncology and Southwest Cancer Center, Southwest Hospital Third Military Medical University, Chongqing, China
| | - Juanjuan Ou
- Department of Oncology and Southwest Cancer Center, Southwest Hospital Third Military Medical University, Chongqing, China
| | - Ganfeng Xie
- Department of Oncology and Southwest Cancer Center, Southwest Hospital Third Military Medical University, Chongqing, China
| | - Chen Liu
- Department of Oncology and Southwest Cancer Center, Southwest Hospital Third Military Medical University, Chongqing, China
| | - Jianjun Li
- Department of Oncology and Southwest Cancer Center, Southwest Hospital Third Military Medical University, Chongqing, China
| | - Hongtao Li
- Department of Oncology and Southwest Cancer Center, Southwest Hospital Third Military Medical University, Chongqing, China
| | - Rui Zeng
- Department of Oncology and Southwest Cancer Center, Southwest Hospital Third Military Medical University, Chongqing, China
| | - Houjie Liang
- Department of Oncology and Southwest Cancer Center, Southwest Hospital Third Military Medical University, Chongqing, China
- * E-mail:
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Schmit SL, Gollub J, Shapero MH, Huang SC, Rennert HS, Finn A, Rennert G, Gruber SB. MicroRNA polymorphisms and risk of colorectal cancer. Cancer Epidemiol Biomarkers Prev 2014; 24:65-72. [PMID: 25342389 DOI: 10.1158/1055-9965.epi-14-0219] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND miRNAs act as post-transcriptional regulators of gene expression. Genetic variation in miRNA-encoding sequences or their corresponding binding sites may affect the fidelity of the miRNA-mRNA interaction and subsequently alter the risk of cancer development. METHODS This study expanded the search for miRNA-related polymorphisms contributing to the etiology of colorectal cancer across the genome using a novel platform, the Axiom miRNA Target Site Genotyping Array (237,858 markers). After quality control, the study included 596 cases and 429 controls from the Molecular Epidemiology of Colorectal Cancer study, a population-based case-control study of colorectal cancer in northern Israel. The association between each marker and colorectal cancer status was examined assuming a log-additive genetic model using logistic regression adjusted for sex, age, and two principal components. RESULTS Twenty-three markers had P values less than 5.0E-04, and the most statistically significant association involved rs2985 (chr6:34845648; intronic of UHRF1BP1; OR = 0.66; P = 3.7E-05). Furthermore, this study replicated a previously published risk locus, rs1051690, in the 3'-untranslated region of the insulin receptor gene INSR (OR = 1.38; P = 0.03), with strong evidence of differences in INSR gene expression by genotype. CONCLUSIONS This study is the first to examine associations between genetic variation in miRNA target sites and colorectal cancer using a genome-wide approach. Functional studies to identify allele-specific effects on miRNA binding are needed to confirm the regulatory capacity of genetic variation to influence risk of colorectal cancer. IMPACT This study demonstrates the potential for an miRNA-targeted genome-wide association study to identify candidate susceptibility loci and prioritize them for functional characterization.
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Affiliation(s)
- Stephanie L Schmit
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California. USC Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California
| | | | | | - Shu-Chen Huang
- USC Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Hedy S Rennert
- Department of Community Medicine and Epidemiology, Carmel Medical Center, Haifa, Israel
| | - Andrea Finn
- Affymetrix, Incorporated, Santa Clara, California
| | - Gad Rennert
- Department of Community Medicine and Epidemiology, Carmel Medical Center, Haifa, Israel. Clalit Health Services National Cancer Control Center, Haifa, Israel. Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Stephen B Gruber
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California. USC Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California.
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Pivarcsi A, Ståhle M, Sonkoly E. Genetic polymorphisms altering microRNA activity in psoriasis - a key to solve the puzzle of missing heritability? Exp Dermatol 2014; 23:620-4. [DOI: 10.1111/exd.12469] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/05/2014] [Indexed: 12/15/2022]
Affiliation(s)
- Andor Pivarcsi
- Unit of Dermatology and Venerology; Department of Medicine; Karolinska Institutet; Stockholm Sweden
| | - Mona Ståhle
- Unit of Dermatology and Venerology; Department of Medicine; Karolinska Institutet; Stockholm Sweden
| | - Enikő Sonkoly
- Unit of Dermatology and Venerology; Department of Medicine; Karolinska Institutet; Stockholm Sweden
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25
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Sebio A, Lenz HJ. Clinical importance of recently discovered gene variants in colon cancer recurrence and prognosis. COLORECTAL CANCER 2014. [DOI: 10.2217/crc.14.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
SUMMARY Colorectal cancer survival has increased over the past few years, mainly due to the advances in the metastatic setting. Nonetheless, in the adjuvant scenario, minor improvements have been made, as the tumor's anatomopathological features remain to be most important factors for predicting the risk of recurrence and the prognosis. A deeper understanding of the molecular mechanisms involved in colorectal carcinogenesis, progression, invasion and metastasis development, have laid the groundwork for the search of genetic biomarkers that can help identify patients at a higher risk of recurrence. Common germline variants in genes within molecular pathways responsible for cancer development and progression have proven to influence the probability of relapse and the patient's prognosis. Here, we systematically review the relevance of genetic variants as prognostic biomarkers in colorectal carcinoma.
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Affiliation(s)
- Ana Sebio
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Heinz-Josef Lenz
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
- University of Southern California, Center for Molecular Pathways & Drug Discovery, Keck School of Medicine, Los Angeles, CA, USA
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26
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Gao L, Zhu X, Li Z, Li L, Wang T, Hu H, Guo W, Chen P, Zhu J, Zhang L. Association between a functional insertion/deletion polymorphism in IL1A gene and risk of papillary thyroid carcinoma. Tumour Biol 2014; 35:3861-5. [PMID: 24453029 DOI: 10.1007/s13277-013-1512-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Accepted: 12/03/2013] [Indexed: 02/03/2023] Open
Abstract
The aim of this study was to evaluate whether an insertion/deletion polymorphism (rs3783553) locating in the miR-122 target gene IL1A 3' untranslated region was related to the risk of papillary thyroid carcinoma (PTC). Genomic DNA was extracted from peripheral venous blood of 273 patients with PTC and 509 controls. The IL1A rs3783553 polymorphism was genotyped by using a polymerase chain reaction assay. No significant difference of the distribution of the IL1A rs3783553 polymorphism was observed between PTC patients and controls. However, patients carrying the IL1A rs3783553 ins/ins genotype and ins allele had significantly decreased risks for developing T3 and T4 when compared with patients carrying the IL1A rs3783553 del/del genotype and del allele (ins/ins vs. del/del: OR = 0.22, 95% confidence interval (CI), 0.09-0.54; ins vs. del: OR = 0.58, 95% CI, 0.41-0.83, respectively). These results suggest that the rs3783553 polymorphism may be used as a genetic marker to predict the size/extension of PTC.
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Affiliation(s)
- Linbo Gao
- Laboratory of Molecular and Translational Medicine, West China Institute of Women and Children's Health, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, 610041, People's Republic of China
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Xu X, Yang X, Ru G, Wu Y, Zhang S, Xing C, Wu Y, Cao J. miR-146a gene polymorphism rs2910164 and the risk of digestive tumors: A meta-analysis of 21 case-control studies. Oncol Rep 2013; 31:472-9. [PMID: 24247819 DOI: 10.3892/or.2013.2854] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Accepted: 10/15/2013] [Indexed: 11/05/2022] Open
Abstract
Digestive tumors have the highest incidence among all tumor types worldwide. miR-146a has been shown to play an important role in the development, apoptosis, invasion and metastasis of digestive tumors. Additionally, a miR-146a gene polymorphism has been associated with the risk of a variety of cancer types in the digestive system. Therefore, in order to investigate the correlation, a meta-analysis of reported data was conducted, for which we obtained 21 research studies concerning the association between the miR-146a gene polymorphism and digestive tumors. Odds ratio (OR) values and 95% confidence intervals (95% CI) were used to assess this association. We found that the miR-146a polymorphism rs2910164 might significantly increase the susceptibility of digestive tumors, in particular for esophageal cancer and colorectal cancers. Furthermore, the miR-146a polymorphism might significantly increase the risk of digestive tumors in Asians. However, no obvious correlation between the polymorphism and the risk for digestive tumors was found in Caucasians.
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Affiliation(s)
- Xiaohui Xu
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou 215004, P.R. China
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28
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Pardini B, Rosa F, Barone E, Di Gaetano C, Slyskova J, Novotny J, Levy M, Garritano S, Vodickova L, Buchler T, Gemignani F, Landi S, Vodicka P, Naccarati A. Variation within 3'-UTRs of base excision repair genes and response to therapy in colorectal cancer patients: A potential modulation of microRNAs binding. Clin Cancer Res 2013; 19:6044-56. [PMID: 24036853 DOI: 10.1158/1078-0432.ccr-13-0314] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
PURPOSE Colorectal cancer is routinely treated with a 5-fluorouracil (5-FU)-based chemotherapy. 5-FU incorporates into DNA, and the base excision repair (BER) pathway specifically recognizes such damage. We investigated the association of single-nucleotide polymorphisms (SNP) in the 3'-untranslated regions (UTR) of BER genes, and potentially affecting the microRNA (miRNA) binding, on the risk of colorectal cancer, its progression, and prognosis. SNPs in miRNA-binding sites may modulate the posttranscriptional regulation of gene expression operated by miRNAs and explain interindividual variability in BER capacity and response to 5-FU. EXPERIMENTAL DESIGN We tested 12 SNPs in the 3'-UTRs of five BER genes for colorectal cancer susceptibility in a case-control study (1,098 cases and 1,459 healthy controls). Subsequently, we analyzed the role of these SNPs on clinical outcomes of patients (866 in the Training set and 232 in the Replication set). RESULTS SNPs in the SMUG1 and NEIL2 genes were associated with overall survival. In particular, SMUG1 rs2233921 TT carriers showed increased survival compared with those with GT/GG genotypes [HR, 0.54; 95% confidence interval (CI), 0.36-0.81; P = 0.003] in the Training set and after pooling results from the Replication set. The association was more significant following stratification for 5-FU-based chemotherapy (P = 5.6 × 10(-5)). A reduced expression of the reporter gene for the T allele of rs2233921 was observed when compared with the common G allele by in vitro assay. None of the genotyped BER polymorphisms were associated with colorectal cancer risk. CONCLUSIONS We provide the first evidence that variations in miRNA-binding sites in BER genes 3'-UTR may modulate colorectal cancer prognosis and therapy response.
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Affiliation(s)
- Barbara Pardini
- Authors' Affiliations: Human Genetics Foundation Torino; Department of Medical Sciences, University of Turin, Turin; Department of Biology, University of Pisa, Pisa; Laboratory of Computational Oncology, Center for Integrated Biology (CIBIO), University of Trento, Trento, Italy; Department of Molecular Biology of Cancer, Institute of Experimental Medicine; Departments of Surgery and Oncology, Thomayer Hospital; Institute of Biology and Department of Medical Genetics; and Department of Oncology, First Faculty of Medicine, Charles University, Prague, Czech Republic
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Stenholm L, Stoehlmacher-Williams J, Al-Batran SE, Heussen N, Akin S, Pauligk C, Lehmann S, Senff T, Hofheinz RD, Ehninger G, Kramer M, Goekkurt E. Prognostic role of microRNA polymorphisms in advanced gastric cancer: a translational study of the Arbeitsgemeinschaft Internistische Onkologie (AIO). Ann Oncol 2013; 24:2581-2588. [PMID: 23975664 DOI: 10.1093/annonc/mdt330] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND To determine the prognostic role of selected microRNA (miRNA) polymorphisms in advanced gastric cancer (AGC). PATIENTS AND METHODS Six hundred and seventy-four AGC patients received 5-fluorouracil (F), leucovorin (L), oxaliplatin (O) or FL + cisplatin (P) or additional docetaxel (T) to FLO (FLOT) within four clinical trials. Polymorphisms of mir-26a1 (rs7372209), mir-27a (rs895819), mir-100 (rs1834306), mir-146a (rs2910164), mir-196-a2 (rs11614913), mir-219-1 (rs107822) and mir-423 (rs6505162) were genotyped. Variable selection for the final multivariate model (n = 487) was based on univariate and multivariate Cox-regression analyses with a cut-off P-value of ≤ 20%. RESULTS Genetic factors significantly associated with overall survival (OS) were rs7372209 (mir-26a1) variant genotypes (hazard ratio, HR 1.307 [95% confidence interval (CI) 1.031-1.656], P = 0.0272), rs895819 (mir-27a) variant genotypes (HR 1.304 [95% CI 1.031-1.650], P = 0.0270) and rs11614913 (mir-196a2) variant genotypes (HR 0.791 [95% CI 0.625-1.000], P = 0.0497). Clinical factors with significant impact on OS were Eastern Cooperative Oncology Group (ECOG) 2 performance status (HR 1.880 [95% CI 1.254-2.820], P = 0.0023), curative surgery of advanced disease (HR 0.235 [95% CI 0.123-0.449], P < 0.0001) and addition of docetaxel in locally AGC patients (HR 0.348 [95% CI 0.145-0.838], P = 0.0301). Combined analyses revealed an improved OS in patients without any unfavourable genotype of 18 months compared with 14, 12 and 10 months in patients with 1, 2 and 3 unfavourable genotypes, respectively (P = 0.0257). CONCLUSIONS These data suggest a significant impact of selected miRNA polymorphisms on prognosis in AGC.
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Affiliation(s)
- L Stenholm
- Department of Oncology, Haematology and Stem Cell Transplantation, University Hospital Aachen, RWTH Aachen University, Aachen
| | - J Stoehlmacher-Williams
- Department of Internal Medicine I, University Hospital Carl Gustav Carus, University of Dresden, Dresden
| | - S E Al-Batran
- Krankenhaus Nordwest, UCT-University Cancer Center, Frankfurt
| | - N Heussen
- Department of Medical Statistics, RWTH Aachen University, Aachen
| | - S Akin
- Department of Oncology, Haematology and Stem Cell Transplantation, University Hospital Aachen, RWTH Aachen University, Aachen
| | - C Pauligk
- Krankenhaus Nordwest, UCT-University Cancer Center, Frankfurt
| | - S Lehmann
- Department of Internal Medicine I, University Hospital Carl Gustav Carus, University of Dresden, Dresden
| | - T Senff
- Department of Oncology, Haematology and Stem Cell Transplantation, University Hospital Aachen, RWTH Aachen University, Aachen
| | - R D Hofheinz
- III Medical Clinic, University Hospital Mannheim, University of Heidelberg, Mannheim
| | - G Ehninger
- Department of Internal Medicine I, University Hospital Carl Gustav Carus, University of Dresden, Dresden
| | - M Kramer
- Department of Internal Medicine I, University Hospital Carl Gustav Carus, University of Dresden, Dresden
| | - E Goekkurt
- Department of Oncology, Haematology and Stem Cell Transplantation, University Hospital Aachen, RWTH Aachen University, Aachen; Haematologisch-Onkologische Praxis Eppendorf, Hamburg, Germany.
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A functional polymorphism in IL-1A gene is associated with a reduced risk of gastric cancer. Tumour Biol 2013; 35:265-8. [DOI: 10.1007/s13277-013-1034-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Accepted: 07/18/2013] [Indexed: 12/19/2022] Open
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The role of microRNAs in cancer susceptibility. BIOMED RESEARCH INTERNATIONAL 2013; 2013:591931. [PMID: 23586049 PMCID: PMC3615597 DOI: 10.1155/2013/591931] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Accepted: 02/14/2013] [Indexed: 12/21/2022]
Abstract
Single nucleotide polymorphisms (SNPs) are germline variations interspersed in the human genome. These subtle changes of DNA sequence can influence the susceptibility to various pathologies including cancer. The functional meaning of SNPs is not always clear, being, the majority of them, localized in noncoding regions. The discovery of microRNAs, tiny noncoding RNAs able to bind the 3′ untranslated region (UTR) of target genes and to consequently downregulate their expression, has provided a functional explanation of how some SNPs positioned in noncoding regions contribute to cancer susceptibility. In this paper we summarize the current knowledge of the effect on cancer susceptibility of SNPs included in regions related with miRNA-dependent pathways. Hereditary cancer comes up from mutations that occur in high-penetrant predisposing tumor genes. However, a considerable part of inherited cancers arises from multiple low-penetrant predisposing gene variants that influence the behavior of cancer insurgence. Despite the established significance of such polymorphic variants in cancer predisposition, sometimes their functional role remains unknown. The discovery of a new group of genes called microRNAs (miRNAs) opened an avenue for the functional interpretation of polymorphisms involved in cancer predisposition.
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Liu CP, Jiang JA, Wang T, Liu XM, Gao L, Zhu RR, Shen Y, Wu M, Xu T, Zhang XG. CTLA-4 and CD86 genetic variants and haplotypes in patients with rheumatoid arthritis in southeastern China. GENETICS AND MOLECULAR RESEARCH 2013; 12:1373-82. [DOI: 10.4238/2013.april.25.8] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Wang F, Sun G, Zou Y, Li Y, Hao L, Pan F. Association of microRNA-499 rs3746444 polymorphism with cancer risk: evidence from 7188 cases and 8548 controls. PLoS One 2012; 7:e45042. [PMID: 22970328 PMCID: PMC3438197 DOI: 10.1371/journal.pone.0045042] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2012] [Accepted: 08/11/2012] [Indexed: 01/01/2023] Open
Abstract
Background Owing to inconsistent and inconclusive results, we performed a meta-analysis to derive a more precise estimation of the association between miR-499 rs3746444 polymorphism and cancer risk. Methodology/Principal Findings A systematic search of the Pubmed, Excerpta Medica Database (Embase) and Chinese Biomedical Literature Database (CBM) databases was performed with the last search updated on May 6, 2012. The odds ratio (OR) and its 95% confidence interval (95%CI) were used to assess the strength of the association. A total of 15 independent studies including 7,188 cases and 8,548 controls were used in the meta-analysis. In the present meta-analysis, we found a significant association between miR-499 rs3746444 polymorphism and cancer risk in the overall analysis (G versus A: OR = 1.10, 95%CI 1.01–1.19, P = 0.03; GG+AG versus AA: OR = 1.15, 95%CI 1.02–1.30, P = 0.02; GG versus AG+AA: OR = 1.07, 95%CI 0.89–1.28, P = 0.50; GG versus AA: OR = 1.13, 95%CI 0.98–1.31, P = 0.09; AG versus AA: OR = 1.16, 95%CI 1.02–1.33, P = 0.03). In the subgroup analysis by ethnicity, miR-499 rs3746444 polymorphism was significantly associated with cancer risk in Asian population. In the subgroup analysis by cancer types, miR-499 rs3746444 polymorphism was significantly associated with breast cancer. Conclusions/Significance This meta-analysis suggests a significant association between miR-499 rs3746444 polymorphism and cancer risk. Large-scale and well-designed case-control studies are necessary to validate the risk identified in the present meta-analysis.
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Affiliation(s)
- Fang Wang
- Department of Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Guoping Sun
- Department of Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
- * E-mail:
| | - Yanfeng Zou
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China
| | - Yuanyuan Li
- Department of Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Li Hao
- Department of Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Faming Pan
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China
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Xiang H, Zhao W, Sun Y, Qian W, Xing J, Zhou Y, Yao J, Xu J, Wang Y, Yao H, Hu Z. CD86 gene variants and susceptibility to pancreatic cancer. J Cancer Res Clin Oncol 2012; 138:2061-7. [DOI: 10.1007/s00432-012-1289-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Accepted: 07/02/2012] [Indexed: 02/07/2023]
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Lack of association of miR-146a rs2910164 polymorphism with gastrointestinal cancers: evidence from 10206 subjects. PLoS One 2012; 7:e39623. [PMID: 22761848 PMCID: PMC3384592 DOI: 10.1371/journal.pone.0039623] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Accepted: 05/23/2012] [Indexed: 12/14/2022] Open
Abstract
Background Recent studies on the association between miR-146a rs2910164 polymorphism and risk of gastrointestinal (GI) cancers showed inconclusive results. Accordingly, we conducted a comprehensive literature search and a meta-analysis to clarify the association. Methodology/Principal Findings Data were collected from the following electronic databases: Pubmed, Excerpta Medica Database (Embase), and Chinese Biomedical Literature Database (CBM), with the last report up to February 24, 2012. The odds ratio (OR) and its 95% confidence interval (95%CI) were used to assess the strength of association. Ultimately, a total of 12 studies (4,817 cases and 5,389 controls) were found to be eligible for meta-analysis. We summarized the data on the association between miR-146a rs2910164 polymorphism and risk of GI cancers in the overall population, and performed subgroup analyses by ethnicity, cancer types, and quality of studies. In the overall analysis, there was no evidence of association between miR-146a rs2910164 polymorphism and the risk of GI cancers (G versus C: OR = 1.07, 95%CI 0.98−1.16, P = 0.14; GG+GC versus CC: OR = 1.14, 95%CI 1.00−1.31, P = 0.05; GG versus GC+CC: OR = 1.06, 95%CI 0.91−1.23, P = 0.47; GG versus CC: OR = 1.17, 95%CI 0.95−1.44, P = 0.13; GC versus CC: OR = 1.14, 95%CI 1.00−1.31, P = 0.05). Similar results were found in the subgroup analyses by ethnicity, cancer types, and quality of studies. Conclusions/Significance This meta-analysis demonstrates that miR-146a rs2910164 polymorphism is not associated with GI cancers susceptibility. More well-designed studies based on larger sample sizes and homogeneous cancer patients are needed.
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Wang YW, Meng XH, Yan W, Zhang XQ, Yang J. Systematic polymorphism analysis of the CYP2C9 gene in Chinese Han and Tibetan populations. Genes Genomics 2012. [DOI: 10.1007/s13258-011-0190-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Naccarati A, Pardini B, Stefano L, Landi D, Slyskova J, Novotny J, Levy M, Polakova V, Lipska L, Vodicka P. Polymorphisms in miRNA-binding sites of nucleotide excision repair genes and colorectal cancer risk. Carcinogenesis 2012; 33:1346-51. [PMID: 22581836 DOI: 10.1093/carcin/bgs172] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Reduced DNA repair capacity and DNA damage accumulation may lead to cancer development. Regulation of and coordination between genes involved in DNA repair pathways is fundamental for maintaining genome stability, and post-transcriptional gene regulation by microRNAs (miRNAs) may therefore be of particular relevance. In this context, the presence of single nucleotide polymorphisms (SNPs) within the 3'untranslated regions of target DNA repair genes could alter the binding with specific miRNAs, modulating gene expression and ultimately affecting cancer susceptibility. In this study, we investigated the role of genetic variations in miRNA-binding sites of nucleotide excision repair (NER) genes in association with colorectal cancer (CRC) risk. From 28 NER genes, we screened among SNPs residing in their 3'untranslated regions and simultaneously located in miRNA-binding sites, with an in silico approach. Through the calculation of different binding free energy according to both alleles of identified SNPs, and with global binding free energies median providing a threshold, we selected nine NER gene variants. We tested those SNPs in 1098 colorectal cancer cases and 1469 healthy controls from the Czech Republic. Rs7356 in RPA2 and rs4596 in GTF2H1 were associated with colorectal cancer risk. After stratification for tumor location, the association of both SNPs was significant only for rectal cancer (rs7356: OR 1.52, 95% CI 1.02-2.26, P = 0.04 and rs4596: OR 0.69, 95% CI 0.50-0.94, P = 0.02; results not adjusted for multiple testing). Variation in miRNA target binding sites in the 3'untranslated region of NER genes may be important for modulating colorectal cancer risk, with a different relevance according to tumor location.
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Affiliation(s)
- Alessio Naccarati
- Department of Molecular Biology of Cancer, Institute of Experimental Medicine, Prague, Czech Republic.
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Campa D, Sainz J, Pardini B, Vodickova L, Naccarati A, Rudolph A, Novotny J, Försti A, Buch S, von Schönfels W, Schafmayer C, Völzke H, Hoffmeister M, Frank B, Barale R, Hemminki K, Hampe J, Chang-Claude J, Brenner H, Vodicka P, Canzian F. A comprehensive investigation on common polymorphisms in the MDR1/ABCB1 transporter gene and susceptibility to colorectal cancer. PLoS One 2012; 7:e32784. [PMID: 22396794 PMCID: PMC3292569 DOI: 10.1371/journal.pone.0032784] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2011] [Accepted: 02/02/2012] [Indexed: 02/07/2023] Open
Abstract
ATP Binding Cassette B1 (ABCB1) is a transporter with a broad substrate specificity involved in the elimination of several carcinogens from the gut. Several polymorphic variants within the ABCB1 gene have been reported as modulators of ABCB1-mediated transport. We investigated the impact of ABCB1 genetic variants on colorectal cancer (CRC) risk. A hybrid tagging/functional approach was performed to select 28 single nucleotide polymorphisms (SNPs) that were genotyped in 1,321 Czech subjects, 699 CRC cases and 622 controls. In addition, six potentially functional SNPs were genotyped in 3,662 German subjects, 1,809 cases and 1,853 controls from the DACHS study. We found that three functional SNPs (rs1202168, rs1045642 and rs868755) were associated with CRC risk in the German population. Carriers of the rs1202168_T and rs868755_T alleles had an increased risk for CRC (P(trend) = 0.016 and 0.029, respectively), while individuals bearing the rs1045642_C allele showed a decreased risk of CRC (P(trend) = 0.022). We sought to replicate the most significant results in an independent case-control study of 3,803 subjects, 2,169 cases and 1,634 controls carried out in the North of Germany. None of the SNPs tested were significantly associated with CRC risk in the replication study. In conclusion, in this study of about 8,800 individuals we show that ABCB1 gene polymorphisms play at best a minor role in the susceptibility to CRC.
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Affiliation(s)
- Daniele Campa
- Genomic Epidemiology Group, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Department of Biology, University of Pisa, Pisa, Italy
| | - Juan Sainz
- Division of Molecular Genetic Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Barbara Pardini
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Ludmila Vodickova
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Prague, Czech Republic
- Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Alessio Naccarati
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Anja Rudolph
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Jan Novotny
- Department of Oncology, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Asta Försti
- Division of Molecular Genetic Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Center for Primary Health Care Research, Clinical Research Center, SUS Malmö, Malmö, Sweden
| | - Stephan Buch
- Department of General Internal Medicine, University Hospital Schleswig-Holstein, Kiel, Germany
- POPGEN Biobank Project, University Hospital Schleswig-Holstein, Kiel, Germany
| | - Witigo von Schönfels
- Department of General and Thoracic Surgery, University Hospital Schleswig-Holstein, Kiel, Germany
| | - Clemens Schafmayer
- POPGEN Biobank Project, University Hospital Schleswig-Holstein, Kiel, Germany
- Department of General and Thoracic Surgery, University Hospital Schleswig-Holstein, Kiel, Germany
| | - Henry Völzke
- Institute for Community Medicine, University Hospital of the Ernst Moritz Arndt University, Greifswald, Greifswald, Germany
| | - Michael Hoffmeister
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Bernd Frank
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | | | - Kari Hemminki
- Division of Molecular Genetic Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Center for Primary Health Care Research, Clinical Research Center, SUS Malmö, Malmö, Sweden
| | - Jochen Hampe
- Department of General Internal Medicine, University Hospital Schleswig-Holstein, Kiel, Germany
| | - Jenny Chang-Claude
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Hermann Brenner
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Pavel Vodicka
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Prague, Czech Republic
- Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Federico Canzian
- Genomic Epidemiology Group, German Cancer Research Center (DKFZ), Heidelberg, Germany
- * E-mail:
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Landi D, Gemignani F, Pardini B, Naccarati A, Garritano S, Vodicka P, Vodickova L, Canzian F, Novotny J, Barale R, Landi S. Identification of candidate genes carrying polymorphisms associated with the risk of colorectal cancer by analyzing the colorectal mutome and microRNAome. Cancer 2012; 118:4670-80. [PMID: 22282400 DOI: 10.1002/cncr.27435] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2011] [Revised: 10/31/2011] [Accepted: 11/18/2011] [Indexed: 12/16/2022]
Abstract
BACKGROUND The presence of single-nucleotide polymorphisms (SNPs) within the 3'-untranslated regions of genes could affect the binding between a microRNA (miRNA) and its target, with consequences on gene expression regulation. Considering the important role of miRNAs in carcinogenesis, it is hypothesized here that these SNPs could also affect the individual risk of colorectal cancer (CRC). METHODS To test this hypothesis, a list was developed of 140 somatically mutated genes deduced from previous works on the mutome of the CRC. A further selection was conducted of SNPs within target sites for miRNAs that are expressed only in the colorectum (the colorectal microRNAome) and having adequate population frequencies. This yielded 12 SNPs that were genotyped in a case-control association study on 717 colorectal cases and 1171 controls from the Czech Republic. RESULTS Statistically significant associations were found between the risk of CRC and the variant alleles of KIAA0182 (rs709805) (odds ratio = 1.57; 95% confidence interval = 1.06-2.78, for the variant homozygotes) and NUP210 genes (rs354476) (odds ratio = 1.36; 95% confidence interval = 1.02-1.82, for the variant homozygotes). CONCLUSIONS The results support the study hypothesis and highlight the importance of SNPs within miRNA-dependent regulatory regions. Further studies on the role exerted by NUP210 and KIAA0182 in colorectal carcinogenesis are warranted.
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Affiliation(s)
- Debora Landi
- Department of Biology, University of Pisa, Pisa, Italy
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Fassan M, Croce CM, Rugge M. miRNAs in precancerous lesions of the gastrointestinal tract. World J Gastroenterol 2011; 17:5231-9. [PMID: 22219591 PMCID: PMC3247686 DOI: 10.3748/wjg.v17.i48.5231] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2011] [Revised: 09/13/2011] [Accepted: 10/14/2011] [Indexed: 02/06/2023] Open
Abstract
In spite of the well-established understanding of the phenotypic lesions occurring in the shift from native epithelia to invasive (adeno) carcinoma, the molecular typing of the precancerous changes in the gastrointestinal tract remains unreliable. In recent years, no biomarkers have aroused as much interest as the miRNAs, a class of non-coding RNA molecules that function as endogenous silencers of numerous target genes. Aberrant miRNA expression is a hallmark of human disease, including cancer. Unlike most mRNAs, miRNAs are both long-living in vivo and very stable in vitro. Such characteristics allow their testing in paraffin-embedded tissue samples, which is essential in the biological profiling of small (phenotypically characterized) preneoplastic lesions of the gastrointestinal tract (as well as in other fields of human pathology). The upcoming challenge lies in the reliable identification of disease-specific targets of dysregulated miRNAs, to enable miRNA testing in the clinical management of the secondary prevention of gastrointestinal cancer.
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Jang MJ, Kim JW, Min KT, Jeon YJ, Oh D, Kim NK. Prognostic significance of microRNA gene polymorphisms in patients with surgically resected colorectal cancer. Exp Ther Med 2011; 2:1127-1132. [PMID: 22977632 DOI: 10.3892/etm.2011.321] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2011] [Accepted: 07/18/2011] [Indexed: 12/16/2022] Open
Abstract
MicroRNAs (miRNAs) are small 19- to 22-nucleotide sequences of RNA that participate in the regulation of cell differentiation, cell cycle progression and apoptosis. Although single-nucleotide polymorphisms (SNPs) in miRNA regions are considered unlikely to be functionally important, nucleotide variations within the sequences of primary (pri)- or precursor (pre)-miRNAs may affect miRNA processing and ultimately result in the modification of miRNA expression. The aim of this study was to investigate associations between four SNPs in pre-miRNA genes and the survival of colorectal cancer patients. A total of 407 colorectal patients were consecutively enrolled. DNA was extracted from blood specimens, and the hsa-mir-146aC>G, hsa-mir-149C>T, hsa-mir-196a2C>T and hsa-mir-499A>G polymorphisms were genotyped by PCR-RFLP. We were unable to identify independent prognostic SNPs for colorectal cancer. However, the heterozygous TC genotype of the 196a2C>T polymorphism was a significant risk factor for the overall survival of rectal cancer patients (HR=3.554, 95% CI 1.296-9.747, p=0.014). Further large-population studies are warranted to define the 196a2C>T polymorphism as a prognostic factor of rectal cancer.
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