Detailed Information on Publication Record
2013
Genes of the microRNA biogenesis pathway are deregulated in Colorectal cancer
SLABÝ, Ondřej, Petra VYCHYTILOVÁ, Marek SVOBODA and Rostislav VYZULABasic information
Original name
Genes of the microRNA biogenesis pathway are deregulated in Colorectal cancer
Authors
Edition
3rd World Congress on Cancer Science and Therapy, CA, USA, 2013
Other information
Language
English
Type of outcome
Konferenční abstrakt
Field of Study
30200 3.2 Clinical medicine
Country of publisher
United States of America
Confidentiality degree
není předmětem státního či obchodního tajemství
Organization unit
Central European Institute of Technology
ISSN
Keywords in English
microRNA; biogenesis; colorectal cancer; therapeutic targets; biomarkers
Tags
International impact, Reviewed
Změněno: 8/11/2013 10:58, Mgr. Petra Vychytilová, Ph.D.
Abstract
V originále
MicroRNAs (miRNAs) are small non-coding RNAs 18-25 nt long that regulate gene expression on post-transcriptional level. Therefore, their production and maturation have to be strictly regulated. Their biogenesis starts with the transcription, which is followed by several steps that lead to processing of primary transcripts to mature miRNAs. Each step of this pathway is sophistically regulated and any disruption of control mechanisms may leads to the cancer occurrence. The aim of this study was to analyse the expression of the crucial genes involved in the biogenesis of miRNAs in colorectal cancer (CRC). Expression of 19 selected genes has been analysed in tumor tissues of 120 clinically characterized patients with CRC and in 120 parallel healthy tissues by qRT-PCR. Using Wilcoxon test, genes with different expression between tumor and healthy tissue have been identified. Subsequently, Kruskal-Wallis test has been used to find any correlation with the clinical-pathological features of the patients. We have found significantly higher expression of POLRIIA, ADAR, ADARB1, DGCR8, DDX5, DDX17, DDX20, DROSHA, XPO5, EIF2C1-C4, TARBP2, TNRC6A, GEMIN3, and DICER1 (P < 0.0001) and significantly lower expression of LIN28A in tumor tissue of CRC patients. Moreover, negative correlation between the expression of EIF2C3 and clinical stage of patients (P = 0.0017) and grade (P = 0.0151) and positive correlation between the expression of DICER1 (P = 0.0230) and DROSHA (P = 0.0212) and grade of patients has been observed. Our results show that changes in the expression of genes associated with biogenesis of miRNAs may be associated not only with the origin, but also with the progression of CRC and therefore, these molecules could serve as potential new biomarkers or therapeutic targets.
Links
| NT13549, research and development project |
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