1
|
Chhichholiya Y, Singh HV, Vashistha R, Singh S, Munshi A. Deciphering the role of KRAS gene in oncogenesis: Focus on signaling pathways, genetic alterations in 3'UTR, KRAS specific miRNAs and therapeutic interventions. Crit Rev Oncol Hematol 2024; 194:104250. [PMID: 38143047 DOI: 10.1016/j.critrevonc.2023.104250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 12/05/2023] [Accepted: 12/20/2023] [Indexed: 12/26/2023] Open
Abstract
Cancer is a significant cause of death after cardiovascular disease. The genomic, epigenetic and environmental factors have been found to be the risk factor for the disease. The most important genes that develop cancer are oncogenes and tumor suppressor genes. Among oncogenes, KRAS has emerged as a significant player in the development of many cancers. Dysregulation of the RAS signaling pathway either on account of mutation in significant genes involved in the pathway or aberrant expression of different miRNAs targeting these genes including KRAS. The focus is also on the alterations in 3'UTR of the KRAS gene sequence as well as the changes in the miRNA encoding genes especially the one targeting the KRAS gene. Efforts are also being put in to target the dysregulated KRAS gene as a therapeutic approach to treat different cancers. However, there are some challenges like resistance to KRAS inhibitors that need to be addressed.
Collapse
Affiliation(s)
- Yogita Chhichholiya
- Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda, Punjab, India
| | - Harsh Vikram Singh
- Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda, Punjab, India
| | | | - Sandeep Singh
- Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda, Punjab, India
| | - Anjana Munshi
- Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda, Punjab, India.
| |
Collapse
|
2
|
Jin M, Lu F, Li X, Zhou W, Li S, Jiang Y, Wu H, Wang J. Association between KRAS gene polymorphisms and genetic susceptibility to breast cancer in a Chinese population. J Clin Lab Anal 2022; 37:e24806. [PMID: 36510353 PMCID: PMC9833971 DOI: 10.1002/jcla.24806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/30/2022] [Accepted: 11/22/2022] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE The KRAS gene has a pathophysiological role in the development of many cancers. This study aims to investigate the relationship between KRAS polymorphisms and genetic susceptibility to breast cancer. METHOD The rs712, rs12587 and rs9266 gene loci in the KRAS gene of 421 subjects (141 breast cancer patients, 141 benign breast tumours and 139 healthy controls) were analysed by the polymerase chain reaction and SNaPshot sequencing. Transcriptomic information on KRAS and corresponding clinical information was downloaded from the TCGA and GTEx databases. Differences in KRAS expression between breast cancer tissues and control tissues were analysed. RESULTS We found no significant association between KRAS rs712 and rs12587 locus gene polymorphisms and an increased risk of developing benign breast tumours and breast cancer (p > 0.05). The KRAS rs9266 locus mutation heterozygous model CT and dominant model CT + TT were significantly associated with an increased risk of breast cancer (both p < 0.05). In addition, the TAT haplotype was expressed at an increased frequency, and the GAC haplotype was expressed at a reduced frequency in breast cancer compared with controls (both p < 0.05). We found that KRAS was over expressed in breast cancer tumour tissues compared with the control tissues (p < 0.0001). CONCLUSION The KRAS rs9266 gene polymorphism and the TAT haplotype may be associated with an increased risk of breast cancer in Chinese women. The GAC haplotype may be a protective factor against breast cancer.
Collapse
Affiliation(s)
- Min Jin
- Key Laboratory of Clinical Laboratory Medicine of Guangxi Department of Education, Department of Clinical LaboratoryThe First Affiliated Hospital of Guangxi Medical UniversityNanningChina
| | - Fengke Lu
- Key Laboratory of Clinical Laboratory Medicine of Guangxi Department of Education, Department of Clinical LaboratoryThe First Affiliated Hospital of Guangxi Medical UniversityNanningChina,Department of Clinical Laboratory, Liuzhou Maternity and Child Healthcare HospitalAffiliated Maternity Hospital and Affiliated Children's Hospital of Guangxi University of Science and TechnologyLiuzhouChina
| | - Xi Li
- Key Laboratory of Clinical Laboratory Medicine of Guangxi Department of Education, Department of Clinical LaboratoryThe First Affiliated Hospital of Guangxi Medical UniversityNanningChina
| | - Wei Zhou
- Key Laboratory of Clinical Laboratory Medicine of Guangxi Department of Education, Department of Clinical LaboratoryThe First Affiliated Hospital of Guangxi Medical UniversityNanningChina
| | - Sihui Li
- Key Laboratory of Clinical Laboratory Medicine of Guangxi Department of Education, Department of Clinical LaboratoryThe First Affiliated Hospital of Guangxi Medical UniversityNanningChina
| | - Yanting Jiang
- Key Laboratory of Clinical Laboratory Medicine of Guangxi Department of Education, Department of Clinical LaboratoryThe First Affiliated Hospital of Guangxi Medical UniversityNanningChina
| | - Huiling Wu
- Key Laboratory of Clinical Laboratory Medicine of Guangxi Department of Education, Department of Clinical LaboratoryThe First Affiliated Hospital of Guangxi Medical UniversityNanningChina
| | - Jian Wang
- Key Laboratory of Clinical Laboratory Medicine of Guangxi Department of Education, Department of Clinical LaboratoryThe First Affiliated Hospital of Guangxi Medical UniversityNanningChina
| |
Collapse
|
3
|
Associations of Polymorphisms Localized in the 3'UTR Regions of the KRAS, NRAS, MAPK1 Genes with Laryngeal Squamous Cell Carcinoma. Genes (Basel) 2021; 12:genes12111679. [PMID: 34828284 PMCID: PMC8625477 DOI: 10.3390/genes12111679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/18/2021] [Accepted: 10/21/2021] [Indexed: 11/16/2022] Open
Abstract
Background: Genetic variations, localized in the 3′ untranslated region (UTR) in mitogen-activated protein kinase (MAPK) pathway-related genes, may alter the transcription and impact the pathogenesis of laryngeal squamous cell carcinoma (LSCC). The present study investigated the associations of single-nucleotide polymorphisms (SNP), localized in the 3′UTR) of the KRAS, NRAS, and MAPK1 genes with LSCC risk and clinicopathological features. Methods: Genomic DNA and clinical data were collected from 327 adult men with LSCC. The control group was formed from 333 healthy men. Genotyping of the SNPs was performed using TaqMan SNP genotyping assays. Five KRAS, NRAS, and MAPK1 polymorphisms were analyzed. All studied genotypes were in Hardy–Weinberg equilibrium and had the same allele distribution as the 1000 Genomes project Phase 3 dataset for the European population. Results: Significant associations of the studied SNPs with reduced LSCC risk were observed between NRAS rs14804 major genotype CC. Significant associations of the studied SNPs with clinicopathologic variables were also observed between NRAS rs14804 minor T allele and advanced tumor stage and positive lymph node status. SNP of MAPK1 rs9340 was associated with distant metastasis. Moreover, haplotype analysis of two KRAS SNPs rs712 and rs7973450 revealed that TG haplotype was associated with positive lymph node status in LSCC patients. Conclusions: According to the present study, 3′UTR SNP in the NRAS and MAPK1 genes may contribute to the identifications of patients at higher risk of LSCC lymph node and distant metastasis development.
Collapse
|
4
|
LncRNA SPINT1-AS1 promotes breast cancer proliferation and metastasis by sponging let-7 a/b/i-5p. Pathol Res Pract 2020; 217:153268. [PMID: 33246290 DOI: 10.1016/j.prp.2020.153268] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 10/19/2020] [Accepted: 10/22/2020] [Indexed: 12/17/2022]
Abstract
BACKGROUND A growing number of studies have shown that long non-coding RNAs (lncRNAs) play an important role in the occurrence and development of tumors. In this study, we explored the function and molecular mechanism of lncRNA SPINT1-AS1 in breast cancer progression. METHODS A total of 30 patients and 25 healthy controls were enrolled to detect the expression of SPINT1-AS1 in the serum by RT-qPCR. CCK-8 assay, clone formation assay, EdU assay, Transwell assay, Flow cytometry for apoptosis assay and wound healing assays were used to explore the effects of SPINT1-AS1 on the proliferation and migration of breast cancer cells. Bioinformatics analysis were used to enrich the downstream target genes and related pathways of miRNAs interacting with SPINT1-AS1, construct a competitive endogenous RNA (ceRNA) network diagram. RESULTS SPINT1-AS1 is up-regulated in the serum of breast cancer patients and breast cancer cell lines. The proliferation and migration ability of breast cancer cells were decreased significantly after SPINT1-AS1 knockdown, and it may inhibit its expression by sponging miR-let-7a/b/i-5p, thereby promoting breast cancer progression. CONCLUSIONS SPINT1-AS1 can promote the proliferation and migration of breast cancer cells by regulating miR-let-7a/b/i-5p, suggesting that it may be an important regulator of breast cancer progression.
Collapse
|
5
|
Mosallaei M, Simonian M, Esmaeilzadeh E, Bagheri H, Miraghajani M, Salehi AR, Mehrzad V, Salehi R. Single nucleotide polymorphism rs10889677 in miRNAs Let-7e and Let-7f binding site of IL23R gene is a strong colorectal cancer determinant: Report and meta-analysis. Cancer Genet 2019; 239:46-53. [PMID: 31546198 DOI: 10.1016/j.cancergen.2019.09.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 08/11/2019] [Accepted: 09/15/2019] [Indexed: 12/13/2022]
Abstract
Single nucleotide polymorphisms (SNPs) in the recognition sites of microRNAs (miRNAs), located at 3' untranslated region (UTR) of mRNAs, interfere with posttranslational gene regulation. Deregulation of genes may contribute to some disease susceptibility including colorectal cancer (CRC). In the present study, in a case-control setup, 167 CRC patients and 161 control subjects were studied for allele and genotype frequency of rs10889677 polymorphism in miRNAs Let-7e and Let-7f binding sites at 3' UTR of IL23R gene using PCR-RFLP assay. Also, related articles were retrieved from MEDLINE, Cochrane review, Google Scholar and Scopus databases for meta-analysis study. According to our results, AA genotype of SNP rs10889677 was significantly correlated with increased risk of CRC (OR = 3.10; 95% CI [1.86-5.18]; P: < 0.001). In a meta-analysis on 10 risk estimates for the CC versus AA genotype, we found an inverse association between CC SNPs and risk of all cancer (OR = 0.59; 95% CI [0.49-0.71]; P < 0.001). In conclusion, our results demonstrate that rs10889677 polymorphism is significantly associated with CRC risk.
Collapse
Affiliation(s)
- Meysam Mosallaei
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Miganoosh Simonian
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Emran Esmaeilzadeh
- Neuroscience Research Center, Iran University of Medical Science, Tehran, Iran
| | - Hadi Bagheri
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Maryam Miraghajani
- Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ahmad Reza Salehi
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Valiollah Mehrzad
- Department of Internal Medicine, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Rasoul Salehi
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran; Gerfa Namayesh Azmayesh (GENAZMA) Science & Research Institute, Isfahan, Iran.
| |
Collapse
|
6
|
A genetic variant rs13293512 in the promoter of let-7 is associated with an increased risk of breast cancer in Chinese women. Biosci Rep 2019; 39:BSR20182079. [PMID: 31028134 PMCID: PMC6533205 DOI: 10.1042/bsr20182079] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 04/03/2019] [Accepted: 04/10/2019] [Indexed: 12/13/2022] Open
Abstract
Growing evidence has demonstrated that single-nucleotide polymorphisms (SNPs) in the promoter of miRNA may influence individuals’ susceptibility to human diseases. We examined two SNPs rs10877887 and rs13293512 in the promoters of let-7 family to determine if the two SNPs were related to the occurrence of breast cancer (BC). Genotyping of the two SNPs was performed by PCR and restriction fragment length polymorphism analysis or TaqMan assay in 301 BC patients and 310 age matched controls. We found a higher frequency of rs13293512 CC genotype and rs13293512 C allele amongst BC patients (CC vs TT: adjusted odds ratio (OR) = 1.78; 95% CI: 1.14–2.80; P=0.012; C vs T: adjusted OR = 1.33; 95% CI: 1.06–1.67; P=0.013). Stratification analysis showed that rs13293512 CC genotype was associated with an increased risk of BC in patients with negative estrogen receptor (adjusted OR = 2.39; 95% CI: 1.32–4.30; P=0.004), patients with negative progesterone receptor (adjusted OR = 1.92; 95% CI: 1.11–3.33; P=0.02), patients with T1-2 stage cancer (adjusted OR = 1.77; 95% CI: 1.07–2.93; P=0.03), and patients with N1-3 stage cancer (adjusted OR = 1.89; 95% CI: 1.13–3.17; P=0.015). These findings suggest that rs13293512 in the promoter of let-7a-1/let-7f-1/let-7d cluster may be a possible biomarker for the development of BC in Chinese women.
Collapse
|
7
|
Koduru SV, Leberfinger AN, Kawasawa YI, Mahajan M, Gusani NJ, Sanyal AJ, Ravnic DJ. Non-coding RNAs in Various Stages of Liver Disease Leading to Hepatocellular Carcinoma: Differential Expression of miRNAs, piRNAs, lncRNAs, circRNAs, and sno/mt-RNAs. Sci Rep 2018; 8:7967. [PMID: 29789629 PMCID: PMC5964116 DOI: 10.1038/s41598-018-26360-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 05/10/2018] [Indexed: 12/16/2022] Open
Abstract
Hepatocellular carcinoma (HCC) was the fifth leading cause of cancer death in men and eighth leading cause of death in women in the United States in 2017. In our study, we sought to identify sncRNAs in various stages of development of HCC. We obtained publicly available small RNA-seq data derived from patients with cirrhosis (n = 14), low-grade dysplastic nodules (LGDN, n = 9), high grade dysplastic nodules (HGDN, n = 6), early hepatocellular carcinoma (eHCC, n = 6), and advanced hepatocellular carcinoma (HCC, n = 20), along with healthy liver tissue samples (n = 9). All samples were analyzed for various types of non-coding RNAs using PartekFlow software. We remapped small RNA-seq to miRBase to obtain differential expressions of miRNAs and found 87 in cirrhosis, 106 in LGDN, 59 in HGDN, 80 in eHCC, and 133 in HCC. Pathway analysis of miRNAs obtained from diseased samples compared to normal samples showed signaling pathways in the microRNA dependent EMT, CD44, and others. Additionally, we analyzed the data sets for piRNAs, lncRNAs, circRNAs, and sno/mt-RNAs. We validated the in silico data using human HCC samples with NanoString miRNA global expression. Our results suggest that publically available data is a valuable resource for sncRNA identification in HCC progression (FDR set to <0.05 for all samples) and that a data mining approach is useful for biomarker development.
Collapse
Affiliation(s)
- Srinivas V Koduru
- Division of Plastic Surgery, Department of Surgery, Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA, 17033, USA.
| | - Ashley N Leberfinger
- Division of Plastic Surgery, Department of Surgery, Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA, 17033, USA
| | - Yuka I Kawasawa
- Department of Pharmacology, Department of Biochemistry & Molecular Biology, and Institute for Personalized Medicine, Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA, 17033, USA
| | - Milind Mahajan
- Genomics Facility, Department of Genetics and Genomics Sciences, Icahn School of Medicine, Mount Sinai, 1425 Madison Ave, New York, NY, 10029, USA
| | - Niraj J Gusani
- Program for Liver, Pancreas, & Foregut Tumors, Department of Surgery, Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA, 17033, USA
| | - Arun J Sanyal
- Division of Gastroenterology, Hepatology and Nutrition, Department of Internal Medicine, Virginia Commonwealth University, 1201 E Marshall St, Richmond, VA, 23298, USA
| | - Dino J Ravnic
- Division of Plastic Surgery, Department of Surgery, Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA, 17033, USA.
| |
Collapse
|
8
|
Gao S, Cao C, Dai Q, Chen J, Tu J. miR-202 acts as a potential tumor suppressor in breast cancer. Oncol Lett 2018; 16:1155-1162. [PMID: 29963190 DOI: 10.3892/ol.2018.8726] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 04/26/2018] [Indexed: 12/17/2022] Open
Abstract
Breast cancer affects ~10% of women worldwide and is responsible for ~12% of all cancer-associated mortalities. Breast cancer is more prone to metastasis compared with other types of cancer. Up to 5% of patients with breast cancer present with incurable metastasis and an additional 10-15% of patients develop metastases within 3 years of their initial diagnosis. MicroRNAs (miRNAs) are short RNAs, 21-25 nucleotides in length, that have been shown to significantly affect gene expression. In total >2,000 miRNAs have been identified and specific miRNAs have been revealed to be associated with cancer. In the present study, we observed that the majority of breast cancer specimens collected expressed low levels of miR-202 compared with adjacent tissues and normal cell lines. Mechanistic investigations identified KRAS as a potential target gene of miR-202 and it was demonstrated that miR-202 exerted its tumor-suppressive effects by regulating the expression of KRAS in breast cancer cells. Functional assays revealed that miR-202 significantly reduced cell proliferation, migration and invasion in vitro. In summary, these results indicate the function of miR-202 in breast cancer progression and suggest that its use within breast cancer therapy is promising.
Collapse
Affiliation(s)
- Shanshan Gao
- Department of Laboratory Medicine, Clinical Laboratory Medicine and Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China.,Central Laboratory, Longyan First Hospital Affiliated to Fujian Medical University, Longyan, Fujian 364000, P.R. China
| | - Chunfang Cao
- Central Laboratory, Longyan First Hospital Affiliated to Fujian Medical University, Longyan, Fujian 364000, P.R. China
| | - Qingfu Dai
- Central Laboratory, Longyan First Hospital Affiliated to Fujian Medical University, Longyan, Fujian 364000, P.R. China
| | - Jian Chen
- Central Laboratory, Longyan First Hospital Affiliated to Fujian Medical University, Longyan, Fujian 364000, P.R. China
| | - Jiancheng Tu
- Department of Laboratory Medicine, Clinical Laboratory Medicine and Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China
| |
Collapse
|
9
|
Hizir MS, Nandu N, Yigit MV. Homologous miRNA Analyses Using a Combinatorial Nanosensor Array with Two-Dimensional Nanoparticles. Anal Chem 2018; 90:6300-6306. [DOI: 10.1021/acs.analchem.8b01083] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
10
|
Ning S, Gao Y, Wang P, Li X, Zhi H, Zhang Y, Liu Y, Zhang J, Guo M, Han D, Li X. Construction of a lncRNA-mediated feed-forward loop network reveals global topological features and prognostic motifs in human cancers. Oncotarget 2018; 7:45937-45947. [PMID: 27322142 PMCID: PMC5216772 DOI: 10.18632/oncotarget.10004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 05/29/2016] [Indexed: 12/18/2022] Open
Abstract
Long non-coding RNAs (lncRNAs), transcription factors and microRNAs can form lncRNA-mediated feed-forward loops (L-FFLs), which are functional network motifs that regulate a wide range of biological processes, such as development and carcinogenesis. However, L-FFL network motifs have not been systematically identified, and their roles in human cancers are largely unknown. In this study, we computationally integrated data from multiple sources to construct a global L-FFL network for six types of human cancer and characterized the topological features of the network. Our approach revealed several dysregulated L-FFL motifs common across different cancers or specific to particular cancers. We also found that L-FFL motifs can take part in other types of regulatory networks, such as mRNA-mediated FFLs and ceRNA networks, and form the more complex networks in human cancers. In addition, survival analyses further indicated that L-FFL motifs could potentially serve as prognostic biomarkers. Collectively, this study elucidated the roles of L-FFL motifs in human cancers, which could be beneficial for understanding cancer pathogenesis and treatment.
Collapse
Affiliation(s)
- Shangwei Ning
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, 150081, China
| | - Yue Gao
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, 150081, China
| | - Peng Wang
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, 150081, China
| | - Xiang Li
- National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Hui Zhi
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, 150081, China
| | - Yan Zhang
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, 150081, China
| | - Yue Liu
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, 150081, China
| | - Jizhou Zhang
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, 150081, China
| | - Maoni Guo
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, 150081, China
| | - Dong Han
- National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Xia Li
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, 150081, China
| |
Collapse
|
11
|
Du XY, Hu YY, Xie C, Deng CY, Liu CY, Luo ZG, Niu YM, Shen M. Significant association between Let-7-KRAS rs712 G > T polymorphism and cancer risk in the Chinese population: a meta-analysis. Oncotarget 2017; 8:13863-13871. [PMID: 28099923 PMCID: PMC5355145 DOI: 10.18632/oncotarget.14672] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Accepted: 01/06/2017] [Indexed: 01/15/2023] Open
Abstract
Association between let-7-KRAS rs712 polymorphism and cancer risk was inconsistent. We therefore conducted this meta-analysis to clarify the association between let-7-KRAS rs712 polymorphism and cancer risk with STATA 14.0 software. A systemic literature search in online databases (PubMed, Embase, CNKI and Wanfang database) was preformed to obtain relevant articles. A total of 13 case-control studies involving 3,453 patients and 4,470 controls were identified up to May 16, 2015. The pooled results indicated that significantly increased risk were observed in Chinese population in T vs. G (OR = 1.21, 95% CI = 1.03–1.42) and TT vs. GG + GT genetic models (OR = 1.69, 95% CI = 1.17–2.42). Sensitivity analysis was conducted and the result without heterogeneity showed significant associations in all five genetic models. Subgroup analyses of cancer type indicated a similar result in digestive cancer (for T vs. G: OR = 1.41, 95% CI = 1.26–1.57; GT vs. GG: OR = 1.24, 95% CI = 1.07–1.43; TT vs. GG: OR = 2.53, 95% CI = 1.86–3.44; GT + TT vs. GG: OR = 1.36, 95% CI = 1.19–1.56; TT vs. GG + GT: OR = 2.35, 95% CI = 1.73–3.19). In summary, these evidences demonstrate that let-7-KRAS rs712 G > T polymorphism might be associated with digestive system cancer risk in the Chinese population.
Collapse
Affiliation(s)
- Xin-Ya Du
- Department of Stomatology, People's Hospital of New District Longhua Shenzhen, Shenzhen 518109, China
| | - Yuan-Yuan Hu
- Department of Stomatology, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, China
| | - Chun Xie
- Department of Stomatology, People's Hospital of New District Longhua Shenzhen, Shenzhen 518109, China
| | - Chun-Yan Deng
- Intensive Care Unit, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, China
| | - Cai-Yun Liu
- Department of Stomatology, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, China
| | - Zhi-Guo Luo
- Department of Clinical Oncology, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, China
| | - Yu-Ming Niu
- Department of Stomatology, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, China.,Center for Evidence-Based Medicine and Clinical Research, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, China
| | - Ming Shen
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, China.,Department of Dental Implant, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing 210029, China
| |
Collapse
|
12
|
Sanaei S, Hashemi M, Eskandari E, Hashemi SM, Bahari G. KRAS Gene Polymorphisms and their Impact on Breast Cancer Risk in an Iranian Population. Asian Pac J Cancer Prev 2017; 18:1301-1305. [PMID: 28610418 PMCID: PMC5555539 DOI: 10.22034/apjcp.2017.18.5.1301] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Single nucleotide polymorphisms (SNPs) in the let-7 miRNA binding site within the 3’ untranslated region (3’UTR) of KRAS appear related to the risk of cancer. The present case-control study was conducted with 244 BC patients and 204 healthy women to examine whether KRAS polymorphisms (rs61764370 T/G and rs712 G/T) are associated with breast cancer (BC) risk in an Iranian population. The polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP) method was used for genotyping of KRAS SNPs. Our results showed that the rs61764370 TG genotype (OR= 3.73; 95% CI =1.38-10.08; P=0.007) as well as the G allele OR= 3.56; 95% CI =1.33-9.53; P=0.008, respectively) increased the risk of BC. However, the KRAS rs712 TT vs GG+GT genotype in a recessive model was associated with a reduced risk of BC (OR= 0.56; 95% CI =0.38-0.84; P=0.006). In addition, the rs712 T allele decreased the risk of BC compared with the G allele (OR=0.75, 95%CI=0.58-0.97, P=0.031). However, we found no relationship among KRAS SNPs and clinicopathological characteristics of BC patients (P>0.05). Taken together, the present study provided evidence of relationships between KRAS polymorphisms and BC risk in a southeast Iranian population. Additional studies using larger sample sizes and diverse ethnicities are now warranted.
Collapse
Affiliation(s)
- Sara Sanaei
- 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.
| | | | | | | | | |
Collapse
|
13
|
Role of let-7 family microRNA in breast cancer. Noncoding RNA Res 2016; 1:77-82. [PMID: 30159414 PMCID: PMC6096426 DOI: 10.1016/j.ncrna.2016.10.003] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 10/29/2016] [Accepted: 10/29/2016] [Indexed: 02/06/2023] Open
Abstract
Metastasis and resistance to therapy significantly contribute to cancer-related deaths. Growing body of evidence suggest that altered expression of microRNAs (miRNAs) is one of the root cause of adverse clinical outcome. miRNAs such as let-7 are the new fine tuners of signaling cascade and cellular processes which regulates the genes in post-transcriptional manner. In this review, we described the regulation of let-7 expression and the involvement of molecular factors in this process. We discussed the mechanism by which let-7 alter the expression of genes involved in the process of tumorigenesis. Further, we listed the pathways targeted by let-7 to reduce the burden of the tumor. In addition, we described the role of let-7 in breast cancer metastasis and stemness properties. This article will provide the in-depth insight into the biology of let-7 miRNA and its role in the breast cancer progression.
Collapse
|