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Wang Z, Hu S, Li X, Liu Z, Han D, Wang Y, Wei L, Zhang G, Wang X. MiR-16-5p suppresses breast cancer proliferation by targeting ANLN. BMC Cancer 2021; 21:1188. [PMID: 34743685 PMCID: PMC8574041 DOI: 10.1186/s12885-021-08914-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Accepted: 10/26/2021] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND In recent years, gene expression-based analysis has been used for disease biomarker discovery, providing ways for better diagnosis, leading to improvement of clinical treatment efficacy. This study aimed to explore the role of miR-16-5p and ANLN in breast cancer (BC). METHODS Cohort datasets of BC were obtained from the Gene Expression Omnibus (GEO) and the Cancer Genome Atlas (TCGA) and analyzed by bioinformatics tools. qRT-PCR and western blotting were applied to validate ANLN and its protein expression. A dual-luciferase reporter assay was used to prove the regulatory relationship of miR-16-5p and ANLN. Finally, MTT, wound healing, Transwell invasion and flow cytometry analyses of the cell cycle and apoptosis were performed to assess cell proliferation, migration, invasion, cell cycle and apoptosis, respectively. RESULTS A total of 195 differentially expressed genes (DEGs) and 50 overlapping microRNAs (miRNAs) were identified. Among these DEGs and miRNAs, ANLN, associated with poor overall survival in BC, overlapped in the GSE29431, GSE42568, TCGA and GEPIA2 databases. Moreover, ANLN was highly expressed, while miR-16-5p was lower in BC cells than in breast epithelial cells. Then, we confirmed that ANLN was directly targeted by miR-16-5p in BC cells. Over-expression of miR-16-5p and knock-down of ANLN remarkably inhibited cell proliferation and migration as well as cell invasion, arrested the cells in G2/M phase and induced apoptosis in BC cells. CONCLUSIONS These findings suggest that miR-16-5p restrains proliferation, migration and invasion while affecting cell cycle and promotes apoptosis by regulating ANLN, thereby providing novel candidate biomarkers for the diagnosis and treatment of BC.
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Affiliation(s)
- Ziming Wang
- Henan Key Laboratory of Cancer Epigenetics; Cancer hospital, The First Affiliated Hospital, College of Clinical Medicine, Medical College of Henan University of Science and Technology, No.24 jinghua Road, Jianxi District, Luoyang, 471003, China
| | - Siyuan Hu
- Zhoukou first people's Hospital, Zhoukou, China
| | - Xinyang Li
- Henan Key Laboratory of Cancer Epigenetics; Cancer hospital, The First Affiliated Hospital, College of Clinical Medicine, Medical College of Henan University of Science and Technology, No.24 jinghua Road, Jianxi District, Luoyang, 471003, China
| | - Zhiwei Liu
- Henan Key Laboratory of Cancer Epigenetics; Cancer hospital, The First Affiliated Hospital, College of Clinical Medicine, Medical College of Henan University of Science and Technology, No.24 jinghua Road, Jianxi District, Luoyang, 471003, China
| | - Danyang Han
- Henan Key Laboratory of Cancer Epigenetics; Cancer hospital, The First Affiliated Hospital, College of Clinical Medicine, Medical College of Henan University of Science and Technology, No.24 jinghua Road, Jianxi District, Luoyang, 471003, China
| | - Yukun Wang
- Henan Key Laboratory of Cancer Epigenetics; Cancer hospital, The First Affiliated Hospital, College of Clinical Medicine, Medical College of Henan University of Science and Technology, No.24 jinghua Road, Jianxi District, Luoyang, 471003, China
| | - Limin Wei
- Henan Key Laboratory of Cancer Epigenetics; Cancer hospital, The First Affiliated Hospital, College of Clinical Medicine, Medical College of Henan University of Science and Technology, No.24 jinghua Road, Jianxi District, Luoyang, 471003, China
| | - Guangping Zhang
- Henan Key Laboratory of Cancer Epigenetics; Cancer hospital, The First Affiliated Hospital, College of Clinical Medicine, Medical College of Henan University of Science and Technology, No.24 jinghua Road, Jianxi District, Luoyang, 471003, China
| | - Xinshuai Wang
- Henan Key Laboratory of Cancer Epigenetics; Cancer hospital, The First Affiliated Hospital, College of Clinical Medicine, Medical College of Henan University of Science and Technology, No.24 jinghua Road, Jianxi District, Luoyang, 471003, China.
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2
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Yushchuk ND, Sleptsova SS, Malov SI, Bilukina IF, Semenov SI, Stepanenko LA, Ogarkov OB, Savilov ED, Malov IV. [Assessment of external risk factors of hepatocellular cancer development and markers of genetic predisposition to its development in the ethnic group of yakut - men]. TERAPEVT ARKH 2020; 92:56-61. [PMID: 32598664 DOI: 10.26442/00403660.2020.01.000505] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Indexed: 01/10/2023]
Abstract
AIM To establish the main external and genetically determined risk factors for the development of hepatocellular cancer in the ethnic group of male Yakuts living in the Republic of Sakha (Yakutia) [RS (Y)] in the epidemiologically unfavorable conditions of the incidence of viral hepatitis. MATERIALS AND METHODS A total of 97 male Yakuts were examined, including 44 people diagnosed with hepatocellular cancer and 53 people diagnosed with chronic viral hepatitis. HCC risk factors were identified by analyzing medical records and questioning patients. In the experimental and control groups, genetic studies of single nucleotide polymorphisms of genes mapped on the X-chromosome and involved in the activation of antiviral immunity along the TLR7 signaling pathway were performed. RESULTS AND DISCUSSION In 100% of patients with hepatocellular cancer, infection with hepatitis B, C, D viruses or co - infection with these agents was detected. Every fourth patient with HCC in the RS (Y) was infected with hepatitis D. The course of hepatocellular cancer associated with HDV was characterized by rapid progression of liver cirrhosis, development of portal hypertension, bleeding from varicose veins of the stomach and esophagus (36.4%) and edematous ascitic syndrome (63.6%). In addition to viral agents, additional risk factors for liver cancer were identified, such as alcohol abuse, overweight, diabetes mellitus, and smoking. Among the studied variation sites of genes localized on the X-chromosome and encoding the reaction of innate antiviral immunity, no genetic marker was found with a sufficient degree of confidence determining the likelihood of hepatocellular cancer developing. CONCLUSIONS The high incidence of hepatocellular carcinoma of the male population in the RS (Y) is due to the widespread prevalence of parenteral viral hepatitis, especially viral hepatitis D. Due to the introduction of mass vaccination of the population against hepatitis B in the Russian Federation in the foreseeable future in the RS (Y) we should see a decrease in the proportion of hepatocellular cancer associated with hepatitis B and D viruses, and therefore the focus should be on the treatment and prevention of hepatitis C virus and non - infectious risk factors.
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Affiliation(s)
- N D Yushchuk
- A.I. Evdokimov Moscow State University of Medicine and Dentistry
| | - S S Sleptsova
- M.K. Ammosov North-Eastern Federal University, Medical Institute
| | - S I Malov
- Irkutsk State Medical University.,Irkutsk State Medical Academy of Continuing Education
| | - I F Bilukina
- M.K. Ammosov North-Eastern Federal University, Medical Institute
| | - S I Semenov
- M.K. Ammosov North-Eastern Federal University, Medical Institute
| | | | - O B Ogarkov
- Irkutsk State Medical Academy of Continuing Education.,Scientific Center of Family Health and Human Reproduction
| | - E D Savilov
- Irkutsk State Medical Academy of Continuing Education.,Scientific Center of Family Health and Human Reproduction
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3
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Park MH, Jeong E, Choudhury M. Mono-(2-Ethylhexyl)phthalate Regulates Cholesterol Efflux via MicroRNAs Regulated m6A RNA Methylation. Chem Res Toxicol 2019; 33:461-469. [DOI: 10.1021/acs.chemrestox.9b00367] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Min Hi Park
- Department of Pharmaceutical Sciences, Irma Lerma Rangel College of Pharmacy, Texas A&M Health Science Center, College Station, Texas 77843, United States
| | - Eunae Jeong
- Department of Pharmaceutical Sciences, Irma Lerma Rangel College of Pharmacy, Texas A&M Health Science Center, College Station, Texas 77843, United States
| | - Mahua Choudhury
- Department of Pharmaceutical Sciences, Irma Lerma Rangel College of Pharmacy, Texas A&M Health Science Center, College Station, Texas 77843, United States
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4
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Wang F, Zhang L, Xu H, Li R, Xu L, Qin Z, Zhong B. The Significance Role of microRNA-200c as a Prognostic Factor in Various Human Solid Malignant Neoplasms: A Meta-Analysis. J Cancer 2019; 10:277-286. [PMID: 30662548 PMCID: PMC6329861 DOI: 10.7150/jca.27536] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 08/19/2018] [Indexed: 12/11/2022] Open
Abstract
Objective: The aim of this study was to conduct a meta-analysis of 49 relevant studies to evaluate the prognostic value of miRNA-200c in various human malignant neoplasms. Methods: All relevant studies were identified by searching PubMed, Embase and Web of Science until August 15st, 2018. Pooled hazard ratios (HRs) with 95% confidence intervals (CIs) of miRNA-200c for overall survival (OS) and progression-free survival (PFS)/recurrence-free survival (RFS)/disease-free survival (DFS) were calculated to investigate such associations. Results: Overall, 49 eligible studies were included in this meta-analysis. Our results showed that high expression of miRNA-200c was significantly correlated with a poor OS in cancer (pooled HR = 1.32, 95% CI: 1.06-1.65), but was not significantly correlated with PFS/RFS/DFS in cancer (pooled HR=1.05, 95% CI: 0.84-1.23). In our subgroup analysis, high miRNA-200c expression predicted a significantly worse OS (pooled HR = 1.50, 95% CI: 1.12-2.01) only in Caucasians. Moreover, high miRNA-200c expression even showed significantly poor OS (pooled HR = 1.88, 95% CI: 1.39-2.54) in blood samples. In addition, a significantly unfavorable OS (pooled HR = 2.69, 95% CI: 1.49-4.85) and (pooled HR = 2.66, 95% CI: 1.07-6.59) associated with up-regulated miRNA-200c expression were observed in breast cancer and endometrial cancer, respectively. Besides, high miRNA-200c expression also showed significantly poor PFS/RFS/DFS (pooled HR=1.66, 95% CI: 1.03-2.67) in breast cancer. Conclusions: Our findings indicated that high miRNA-200c expression was a promising biomarker for patient survival and disease progression in malignant tumors, especially in breast cancer and endometrial cancer. Considering the insufficient evidence, further large-scale researches and clinical studies were needed to verify these results.
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Affiliation(s)
- Feng Wang
- Department of Ultrasound, Jiangsu Province Hospital of TCM, Affiliated Hospital of Nanjing University of TCM, Nanjing, 210029, China
| | - Lei Zhang
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210009, China
| | - Haoxiang Xu
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210009, China
| | - Ran Li
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210009, China
| | - Lingyan Xu
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Zhiqiang Qin
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006, China
| | - Bing Zhong
- Department of Urology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huai'an, 223300, China.,Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006, China
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miR-16-5p Is a Stably-Expressed Housekeeping MicroRNA in Breast Cancer Tissues from Primary Tumors and from Metastatic Sites. Int J Mol Sci 2016; 17:ijms17020156. [PMID: 26821018 PMCID: PMC4783890 DOI: 10.3390/ijms17020156] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 01/20/2016] [Accepted: 01/21/2016] [Indexed: 01/24/2023] Open
Abstract
For quantitative microRNA analyses in formalin-fixed paraffin-embedded (FFPE) tissue, expression levels have to be normalized to endogenous controls. To investigate the most stably-expressed microRNAs in breast cancer and its surrounding tissue, we used tumor samples from primary tumors and from metastatic sites. MiRNA profiling using TaqMan(®) Array Human MicroRNA Cards, enabling quantification of 754 unique human miRNAs, was performed in FFPE specimens from 58 patients with metastatic breast cancer. Forty-two (72%) samples were collected from primary tumors and 16 (28%) from metastases. In a cross-platform analysis of a validation cohort of 32 FFPE samples from patients with early breast cancer genome-wide microRNA expression analysis using SurePrintG3 miRNA (8 × 60 K)(®) microarrays from Agilent(®) was performed. Eleven microRNAs could be detected in all samples analyzed. Based on NormFinder and geNorm stability values and the high correlation (rho ≥ 0.8) with the median of all measured microRNAs, miR-16-5p, miR-29a-3p, miR-126-3p, and miR-222-3p are suitable single gene housekeeper candidates. In the cross-platform validation, 29 human microRNAs were strongly expressed (mean log2-intensity > 10) and 21 of these microRNAs including miR-16-5p and miR-29a-3p were also stably expressed (CV < 5%). Thus, miR-16-5p and miR-29a-3p are both strong housekeeper candidates. Their Normfinder stability values calculated across the primary tumor and metastases subgroup indicate that miR-29a-3p can be considered as the strongest housekeeper in a cohort with mainly samples from primary tumors, whereas miR-16-5p might perform better in a metastatic sample enriched cohort.
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Prognostic Role of MicroRNA-200c-141 Cluster in Various Human Solid Malignant Neoplasms. DISEASE MARKERS 2015; 2015:935626. [PMID: 26556949 PMCID: PMC4628678 DOI: 10.1155/2015/935626] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2015] [Revised: 09/06/2015] [Accepted: 09/08/2015] [Indexed: 01/30/2023]
Abstract
The miR-200 family has emerged recently as a noticeable marker for predicting cancer prognosis and tumor progression. We aimed to review the evidence of miR-200c-141 genomic cluster as prognostic biomarkers in cancers. The results suggested that high level of miR-200c had no significant impact on OS (HR = 1.14 [0.77-1.69], P = 0.501) and DFS/PFS (HR = 0.72 [0.45-1.14], P = 0.161). Stratified analyses revealed that high miR-200c expression was significantly related to poor OS in serum/plasma (HR = 2.12 [1.62-2.77], P = 0.000) but not in tissues (HR = 0.89 [0.58-1.37], P = 0.599). High miR-200c expression was significantly associated with favorable DFS/PFS in tissues (HR = 0.56 [0.43-0.73], P = 0.000) but worse DFS/PFS in serum/plasma (HR = 1.90 [1.08-3.36], P = 0.027). For miR-141, we found that high miR-141 expression predicted no significant impact on OS (HR = 1.18 [0.74-1.88], P = 0.482) but poor DFS/PFS (HR = 1.11 [1.04-1.20], P = 0.003). Similarly, subgroup analyses showed that high miR-141 expression predicted poor OS in serum/plasma (HR = 4.34 [2.30-8.21], P = 0.000) but not in tissues (HR = 1.00 [0.92-1.09], P = 0.093). High miR-141 expression was significantly associated with worse DFS/PFS in tissues (HR = 1.12 [1.04-1.20], P = 0.002) but not in serum/plasma (HR = 0.90 [0.44-1.83], P = 0.771). Our findings indicated that, compared to their tissue counterparts, the expression level of miR-200c and miR-141 in peripheral blood may be more effective for monitoring cancer prognosis. High miR-141 expression was better at predicting tumor progression than survival for malignant tumors.
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7
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Yang J, Zhang JY, Chen J, Chen C, Song XM, Xu Y, Li J. Prognostic role of microRNA-145 in various human malignant neoplasms: a meta-analysis of 18 related studies. World J Surg Oncol 2014; 12:254. [PMID: 25106061 PMCID: PMC4249768 DOI: 10.1186/1477-7819-12-254] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2014] [Accepted: 07/20/2014] [Indexed: 01/20/2023] Open
Abstract
Background Recent studies show that microRNA-145 (miR-145) might be an attractive tumor
biomarker of considerable prognostic value. To clarify the preliminary predictive
value of miR-145 for prognosis in various malignant neoplasms, we conducted a
meta-analysis of 18 relevant studies. Methods Eligible studies were identified by searching the online databases PubMed,
EMBASE, and Web of Science up to March 2014. Pooled hazard ratios (HRs) with 95%
confidence intervals (CIs) for patient survival and disease progress were
calculated to investigate the association with miR-145 expression. Results In total, 18 eligible studies were included in this meta-analysis. Our results
showed that upregulated miR-145 significantly predicted a favorable overall
survival (OS) (HR = 0.47, 95% CI 0.31 to 0.72), but failed to show a significant
relation with disease prognosis. In stratified analyses, high miR-145 expression
predicted favorable OS in both Whites and Asians but the intensity of the
association in Whites (HR = 0.67, 95% CI 0.47 to 0.95) was not as strong as in
Asians (HR = 0.35, 95% CI 0.19 to 0.64). High miR-145 expression also predicted
better progression-free survival (PFS) in Asians (HR = 0.43, 95% CI 0.21 to 0.89),
but not in Whites. In addition, a significantly favorable OS associated with
upregulated miR-145 expression was observed in both squamous cell (SCC)
(HR = 0.34, 95% CI 0.13 to 0.93) and glioblastoma (HR = 0.72, 95% CI 0.52 to
0.99). Conclusions Our findings indicate that high miR-145 expression is better at predicting
patient survival rather than disease progression for malignant tumors, especially
for SCC and glioblastoma in Asians. Considering the insufficient evidence, further
investigations and more studies are needed.
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Affiliation(s)
| | | | | | | | | | | | - Jie Li
- Department of Urology, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China.
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8
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Yang J, Zhang JY, Chen J, Xu Y, Song NH, Yin CJ. Prognostic role of microRNA-221 in various human malignant neoplasms: a meta-analysis of 20 related studies. PLoS One 2014; 9:e87606. [PMID: 24475314 PMCID: PMC3903772 DOI: 10.1371/journal.pone.0087606] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Accepted: 12/23/2013] [Indexed: 12/19/2022] Open
Abstract
Background MicroRNA-221 (miR-221) has been shown to play an important role in cancer prognosis. In order to evaluate the predictive value of miR-221, we compiled the evidence from 20 eligible studies to perform a meta-analysis. Design All of relevant studies were identified by searching PubMed, Embase, and Web of Science, and were assessed by further quality evaluation. Pooled hazard ratios (HRs) with 95% confidence intervals (CIs) of total and stratified analyses, for overall survival (OS) and recurrence-free survival (RFS), were calculated to investigate the association between high miR-221 expression and cancer prognosis. Results We found that high miR-221 expression can predict a poor OS in malignant tumors (pooled HR = 1.55, P = 0.017) but has no significant association with RFS (pooled HR = 1.02, P = 0.942). Further in stratified analyses, high miR-221 expression was significantly associated with a poor OS in Asians (pooled HR = 2.04, P = 0.010) or serum/ plasma subgroup (pooled HR = 2.28, P<0.001), and even showed significantly poor OS (pooled HR = 1.80, P<0.001) and RFS (pooled HR = 2.43, P = 0.010) in hepatocellular carcinoma (HCC) subgroup, but was correlated to a favorable RFS in prostate cancer subgroup (pooled HR = 0.51, P = 0.004). Conclusions Our findings demonstrate that miR-221 is more suitable to predict cancer prognosis in Asians, and it is a promising prognostic biomarker for HCC. The detection of miR-221 in serum or plasma samples may make it become an effective method for monitoring patients' prognosis and assessing therapeutic efficacy in the future.
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Affiliation(s)
- Jie Yang
- Department of Urology, First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jia-yi Zhang
- Department of Urology, First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jing Chen
- Department of General Surgery, Nanjing First Hospital Affiliated to Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yang Xu
- Department of Urology, First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Ning-hong Song
- Department of Urology, First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Chang-jun Yin
- Department of Urology, First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- * E-mail:
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Higa GSV, de Sousa E, Walter LT, Kinjo ER, Resende RR, Kihara AH. MicroRNAs in neuronal communication. Mol Neurobiol 2014; 49:1309-26. [PMID: 24385256 DOI: 10.1007/s12035-013-8603-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Accepted: 12/05/2013] [Indexed: 12/28/2022]
Abstract
MicroRNAs (miRNAs) are short nucleotides sequences that regulate the expression of genes in different eukaryotic cell types. A tremendous amount of knowledge on miRNAs has rapidly accumulated over the last few years, revealing the growing interest in this field of research. On the other hand, clarifying the physiological regulation of gene expression in the central nervous system is important for establishing a reference for comparison to the diseased state. It is well known that the fine tuning of neuronal networks relies on intricate molecular mechanisms, such as the adjustment of the synaptic transmission. As determined by recent studies, regulation of neuronal interactions by miRNAs has critical consequences in the development, adaptation to ambient demands, and degeneration of the nervous system. In contrast, activation of synaptic receptors triggers downstream signaling cascades that generate a vast array of effects, which includes the regulation of novel genes involved in the control of the miRNA life cycle. In this review, we have examined the hot topics on miRNA gene-regulatory activities in the broad field of neuronal communication-related processes. Furthermore, in addition to indicating the newly described effect of miRNAs on the regulation of specific neurotransmitter systems, we have pointed out how these systems affect the expression, transport, and stability of miRNAs. Moreover, we discuss newly described and under-investigation mechanisms involving the intercellular transfer of miRNAs, aided by exosomes and gap junctions. Thus, in the current review, we were able to highlight recent findings related to miRNAs that indisputably contributed towards the understanding of the nervous system in health and disease.
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Affiliation(s)
- Guilherme Shigueto Vilar Higa
- Núcleo de Cognição e Sistemas Complexos, Centro de Matemática, Computação e Cognição, Universidade Federal do ABC, Av. Atlântica 420, 09060-000, Santo André, SP, Brazil
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Lorenzi JCC, Brum DG, Zanette DL, de Paula Alves Souza A, Barbuzano FG, Dos Santos AC, Barreira AA, da Silva WA. miR-15a and 16-1 are downregulated in CD4+ T cells of multiple sclerosis relapsing patients. Int J Neurosci 2012; 122:466-71. [PMID: 22463747 DOI: 10.3109/00207454.2012.678444] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The pathology of relapsing-remitting multiple sclerosis (RR-MS) is largely attributed to activated autoreactive effector T lymphocytes. The influence of microRNAs on the immune response has been shown to occur in different pathways of lymphocyte differentiation and function. Here, the expression of the miRNAs miR-15a/16-1 in PBMC, CD4(+), and CD8(+) from RR-MS patients has been investigated. BCL2, a known miR-15a/16-1 target, has also been analyzed. The results have shown that miR-15a/16-1 is downregulated in CD4(+) T cells, whereas BCL2 is highly expressed in RR-MS patients only. Our data suggest that miR-15a/16-1 can also modulate the BCL2 gene expression in CD4(+) T cells from RR-MS patients, thereby affecting apoptosis processes.
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Min KT, Kim JW, Jeon YJ, Jang MJ, Chong SY, Oh D, Kim NK. Association of the miR-146aC>G, 149C>T, 196a2C>T, and 499A>G polymorphisms with colorectal cancer in the Korean population. Mol Carcinog 2011; 51 Suppl 1:E65-73. [PMID: 22161766 DOI: 10.1002/mc.21849] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2011] [Revised: 11/04/2011] [Accepted: 11/09/2011] [Indexed: 12/18/2022]
Abstract
MicroRNAs (miRNAs) are small, 18- to 22-nucleotide non-coding RNAs that regulate target gene expression. Although recent studies focused on various diseases that harbor the miR-146aC>G (rs2910164), 149C>T (rs2292832), 196a2C>T (rs11614913), and 499A>G (rs3746444) polymorphisms, the role of miRNA genetic variants in colorectal cancer is still unknown. The present study aimed to evaluate the role of four miRNA polymorphisms in patients with colorectal cancer. We enrolled 446 colorectal cancer patients and 502 control subjects from the Korean population. We found a significantly increased colorectal cancer risk with the miR-196a2CC genotype compared with the TT/CT genotype (AOR = 1.50; 95% CI = 1.11-2.04; P = 0.01; FDR-P = 0.04). In the stratified analyses, we observed both weak and strong association data. We found stronger associations of the miR-196a2 variants in the non-diabetic and rectal cancer groups than other stratified groups. Our data suggest that the miRNA variants could affect the development of colorectal cancer in the Korean population.
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Affiliation(s)
- Kyung Tae Min
- Institute for Clinical Research, School of Medicine, CHA University, Seongnam, South Korea
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12
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Aberrant microRNA expression in Chinese patients with chronic lymphocytic leukemia. Leuk Res 2011; 35:730-4. [DOI: 10.1016/j.leukres.2010.11.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2010] [Revised: 09/30/2010] [Accepted: 11/07/2010] [Indexed: 01/07/2023]
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Ciesla M, Skrzypek K, Kozakowska M, Loboda A, Jozkowicz A, Dulak J. MicroRNAs as biomarkers of disease onset. Anal Bioanal Chem 2011; 401:2051-61. [PMID: 21544542 DOI: 10.1007/s00216-011-5001-8] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2011] [Revised: 03/24/2011] [Accepted: 04/08/2011] [Indexed: 12/12/2022]
Abstract
MicroRNAs (miRNAs) are small, noncoding RNA molecules with the ability to posttranscriptionally regulate gene expression via targeting the 3' untranslated region of messenger RNAs. miRNAs are critical for normal cellular functions such as the regulation of the cell cycle, differentiation, and apoptosis, and they target genes during embryonal and postnatal development, whereas their expression is unbalanced in various pathological states. Importantly, miRNAs are abundantly present in body fluids (e.g., blood), which are routinely examined in patients. These molecules circulate in free and exosome encapsulated forms, and can be efficiently detected and amplified by means of molecular biology tools such as real-time PCR. Together with relative stability, specificity, and reproducibility, they are seen as good candidates for early recognition of the onset of disease. Thus, miRNAs might be considered as biomarkers for many pathological states.
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Affiliation(s)
- Maciej Ciesla
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Kraków, Poland
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Porkka KP, Ogg EL, Saramäki OR, Vessella RL, Pukkila H, Lähdesmäki H, van Weerden WM, Wolf M, Kallioniemi OP, Jenster G, Visakorpi T. The miR-15a-miR-16-1 locus is homozygously deleted in a subset of prostate cancers. Genes Chromosomes Cancer 2011; 50:499-509. [PMID: 21472816 DOI: 10.1002/gcc.20873] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2010] [Revised: 02/18/2011] [Accepted: 02/21/2011] [Indexed: 01/07/2023] Open
Abstract
MicroRNAs (miRNAs) are small, non-coding RNAs that negatively regulate the expression of protein coding genes. In this study, we screened highly informative prostate cancer cell lines and xenografts (n = 42) for miRNA gene copy number and expression changes. The expression profiling showed distinction between cell lines and xenografts as well as between androgen sensitive and independent models. Only a few copy number alterations that were associated with expression changes were identified. Most importantly, the miR-15a-miR-16-1 locus was found to be homozygously deleted in two samples leading to the abolishment of miR-15a, but not miR-16, expression. miR-16 is also expressed from another genomic locus. Mutation screening of the miR-15a-miR-16-1 gene in the model systems as well as clinical samples (n = 50) revealed no additional mutations. In conclusion, our data indicate that putative tumor suppressors, miR-15a and miR-16-1, are homozygously deleted in a subset of prostate cancers, further suggesting that these miRNAs could be important in the development of prostate cancer.
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Affiliation(s)
- Kati P Porkka
- Institute of Medical Technology, University of Tampere, Tampere University Hospital, Finland
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15
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Chan E, Prado DE, Weidhaas JB. Cancer microRNAs: from subtype profiling to predictors of response to therapy. Trends Mol Med 2011; 17:235-43. [PMID: 21354374 DOI: 10.1016/j.molmed.2011.01.008] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2010] [Revised: 01/06/2011] [Accepted: 01/18/2011] [Indexed: 01/08/2023]
Abstract
MicroRNAs (miRNAs) are key regulators of gene expression that regulate important oncogenes and tumor suppressors. Many miRNAs can also act as oncogenes or tumor suppressors, and thus the altered expression of miRNAs is a hallmark of many cancer types. Dysregulated miRNAs provide a potentially powerful new tool that could be used to enable the characterization of tumor environments and identify novel and important oncogenic pathways. More recently, there has been growing interest in the field of miRNAs as biomarkers of cancer risk, diagnosis and response to therapy. Understanding the associations between miRNA expression and cancer phenotypes, and the potential of miRNA profiling in clinical applications, promises to be highly rewarding in the field of cancer research.
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Affiliation(s)
- Elcie Chan
- Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, CT 06510, USA
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Abstract
Epithelial ovarian cancer (EOC) has the highest mortality rate of all gynaecological cancers. One of the greatest impediments to improving outcome is an incomplete understanding of the molecular underpinnings of EOC pathogenesis and progression. Recent studies suggest that microRNAs (miRNAs) are involved in ovarian tumorigenesis and cancer development. Several miRNA profiling studies have identified some consensus aberrantly expressed miRNAs in EOC tissues, and these EOC-related miRNAs may play critical roles in the pathogenesis and progression of EOC. Moreover, some of the miRNAs may have diagnostic or prognostic significance. In this review, recent progress to reveal the role of miRNAs in EOC will be addressed, and a model for miRNA functions in ovarian cancer initiation and progression will be proposed.
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Affiliation(s)
- Shuang-Di Li
- Department of Obstetrics & Gynecology, Shanghai Jiaotong University Affiliated First People's Hospital, Shanghai, China
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Abstract
Many studies have highlighted the role that microRNAs have in physiological processes and how their deregulation can lead to cancer. More recently, it has been proposed that the presence of single nucleotide polymorphisms in microRNA genes, their processing machinery and target binding sites affects cancer risk, treatment efficacy and patient prognosis. In reviewing this new field of cancer biology, we describe the methodological approaches of these studies and make recommendations for which strategies will be most informative in the future.
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Affiliation(s)
- Bríd M Ryan
- Cancer Prevention Fellowship Program, Center for Cancer Training, National Cancer Institute, National Institutes of Health, 37 Convent Drive, Building 37, Room 3068A, Bethesda, MD 20892-4258, USA
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