SLABÝ, Ondřej, Marek SVOBODA, Pavel FABIAN, Tamara ŠMERDOVÁ, Dana KNOFLÍČKOVÁ, Markéta BEDNAŘÍKOVÁ, Rudolf NENUTIL and Rostislav VYZULA. Altered expression of miR-21, miR-31, miR-143 and miR-145 is related to clinicopathologic features of colorectal cancer. Oncology. Basel: S. Karger AG, 2008, vol. 72, 5-6, p. 397-402. ISSN 0030-2414.
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Basic information
Original name Altered expression of miR-21, miR-31, miR-143 and miR-145 is related to clinicopathologic features of colorectal cancer
Name in Czech Altered expression of miR-21, miR-31, miR-143 and miR-145 is related to clinicopathologic features of colorectal cancer
Name (in English) Altered expression of miR-21, miR-31, miR-143 and miR-145 is related to clinicopathologic features of colorectal cancer
Authors SLABÝ, Ondřej, Marek SVOBODA, Pavel FABIAN, Tamara ŠMERDOVÁ, Dana KNOFLÍČKOVÁ, Markéta BEDNAŘÍKOVÁ, Rudolf NENUTIL and Rostislav VYZULA.
Edition Oncology, Basel, S. Karger AG, 2008, 0030-2414.
Other information
Original language Czech
Type of outcome Article in a journal
Field of Study 30200 3.2 Clinical medicine
Country of publisher Czech Republic
Confidentiality degree is not subject to a state or trade secret
WWW URL
Impact factor Impact factor: 1.336
Organization unit Faculty of Medicine
UT WoS 000252590200021
Keywords in English microRNA; colorectal cancer; pathogenesis
Tags Colorectal cancer, microRNA, pathogenesis
Tags International impact, Reviewed
Changed by Changed by: prof. MUDr. Marek Svoboda, Ph.D., učo 19402. Changed: 29/1/2008 01:25.
Abstract
Objectives: Development and metastases of colorectal cancer (CRC) are characterized by multiple genetic alterations. MicroRNAs (miRNAs) are endogenously expressed regulatory noncoding RNAs. Previous, mainly preclinical studies showed altered expression levels of several miRNAs in CRC. Methods: In our study, the expression levels of miR-21, miR-31, miR-143 and miR-145 in 29 primary colorectal carcinomas and 6 non-tumor adjacent tissue specimens were examined by real-time polymerase chain reaction. miRNA expression levels were also correlated with commonly used clinicopath-ologic features of CRC. Results: Expression levels of analyzed miRNAs significantly differed among tumors and adjacent non-tumor tissues: miR-21 (p = 0.0001) and miR-31 (p = 0.0006) were upregulated, and miR-143 (p = 0.011) and miR-145 (p = 0.003) were downregulated in tumors. For the first time, a high expression of miR-21 was associated with lymph node positivity (p = 0.025) and the development of distant metastases (p = 0.009) in CRC patients. Thus, expression of miR-21 correlated with CRC clinical stage (p = 0.032). Furthermore, tumors >50 mm in maximal tumor diameter were characterized by lower expression of miR-143 (p = 0.006) and miR-145 (p = 0.003). We found no correlation between analyzed miRNAs and serum levels of carcinoembryonic antigen. Conclusion: Our results suggest possible roles of miR-21, miR-31, miR-143 and miR-145 in CRC.
Abstract (in English)
Objectives: Development and metastases of colorectal cancer (CRC) are characterized by multiple genetic alterations. MicroRNAs (miRNAs) are endogenously expressed regulatory noncoding RNAs. Previous, mainly preclinical studies showed altered expression levels of several miRNAs in CRC. Methods: In our study, the expression levels of miR-21, miR-31, miR-143 and miR-145 in 29 primary colorectal carcinomas and 6 non-tumor adjacent tissue specimens were examined by real-time polymerase chain reaction. miRNA expression levels were also correlated with commonly used clinicopath-ologic features of CRC. Results: Expression levels of analyzed miRNAs significantly differed among tumors and adjacent non-tumor tissues: miR-21 (p = 0.0001) and miR-31 (p = 0.0006) were upregulated, and miR-143 (p = 0.011) and miR-145 (p = 0.003) were downregulated in tumors. For the first time, a high expression of miR-21 was associated with lymph node positivity (p = 0.025) and the development of distant metastases (p = 0.009) in CRC patients. Thus, expression of miR-21 correlated with CRC clinical stage (p = 0.032). Furthermore, tumors >50 mm in maximal tumor diameter were characterized by lower expression of miR-143 (p = 0.006) and miR-145 (p = 0.003). We found no correlation between analyzed miRNAs and serum levels of carcinoembryonic antigen. Conclusion: Our results suggest possible roles of miR-21, miR-31, miR-143 and miR-145 in CRC.
Links
NR9076, research and development projectName: Genomické profilování v predikci odpovědi na chemoradioterapii u pacientů s lokálně pokročilým karcinomem konečníku
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