Detection of the IDH1/2 gene mutations in tumor samples with low abundance of the mutant allele
- Autores: Varachev V.O.1, Guskov D.A.1, Susova O.Y.2, Shekhtman A.P.3, Rogozhin D.V.3, Surzhikov S.A.1, Chudinov A.V.1, Zasedatelev A.S.1, Nasedkina T.V.1
- 
							Afiliações: 
							- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences
- N.N. Blokhin National Medical Research Center of Oncology, Ministry of Health of the Russian Federation
- Russian Children’s Clinical Hospital
 
- Edição: Volume 50, Nº 5 (2024)
- Páginas: 686-693
- Seção: ПИСЬМА РЕДАКТОРУ
- URL: https://cardiosomatics.ru/0132-3423/article/view/670814
- DOI: https://doi.org/10.31857/S0132342324050117
- EDN: https://elibrary.ru/LQRGLT
- ID: 670814
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		                                					Resumo
Identification of driver mutations in tumors is an extremely important task in oncology for the choice of treatment strategy and assessment of therapy efficacy. In many cases, especially in disease monitoring, there is a need to detect a small number of copies of the mutant allele against the background of excessive content of wild-type DNA. In this work we investigated the possibilities of highly sensitive detection of mutations in IDH1 and IDH2 genes at suppression of wild-type DNA amplification using oligomers of “locked” nucleic acid (LNA) with subsequent hybridization of fluorescently labeled polymerase chain reaction (PCR) product on a biological microchip (biochip). The limit of detection of mutant DNA is 0.1% in the wild-type DNA background. The effectiveness of this approach is demonstrated by analyzing 26 samples of chondroid tumors and glial brain tumors with low representation of the mutant allele, previously undetected mutations R132C, R132L and R132H were identified in three cases.
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	                        Sobre autores
V. Varachev
Engelhardt Institute of Molecular Biology, Russian Academy of Sciences
														Email: tanased06@rambler.ru
				                					                																			                												                	Rússia, 							ul. Vavilova 32, Moscow, 119991						
D. Guskov
Engelhardt Institute of Molecular Biology, Russian Academy of Sciences
														Email: tanased06@rambler.ru
				                					                																			                												                	Rússia, 							ul. Vavilova 32, Moscow, 119991						
O. Susova
N.N. Blokhin National Medical Research Center of Oncology, Ministry of Health of the Russian Federation
														Email: tanased06@rambler.ru
				                					                																			                												                	Rússia, 							Kashirskoe shosse 23, Moscow, 115478						
A. Shekhtman
Russian Children’s Clinical Hospital
														Email: tanased06@rambler.ru
				                					                																			                												                	Rússia, 							Leninsky prosp. 117, Moscow, 119117						
D. Rogozhin
Russian Children’s Clinical Hospital
														Email: tanased06@rambler.ru
				                					                																			                												                	Rússia, 							Leninsky prosp. 117, Moscow, 119117						
S. Surzhikov
Engelhardt Institute of Molecular Biology, Russian Academy of Sciences
														Email: tanased06@rambler.ru
				                					                																			                												                	Rússia, 							ul. Vavilova 32, Moscow, 119991						
A. Chudinov
Engelhardt Institute of Molecular Biology, Russian Academy of Sciences
														Email: tanased06@rambler.ru
				                					                																			                												                	Rússia, 							ul. Vavilova 32, Moscow, 119991						
A. Zasedatelev
Engelhardt Institute of Molecular Biology, Russian Academy of Sciences
														Email: tanased06@rambler.ru
				                					                																			                												                	Rússia, 							ul. Vavilova 32, Moscow, 119991						
T. Nasedkina
Engelhardt Institute of Molecular Biology, Russian Academy of Sciences
							Autor responsável pela correspondência
							Email: tanased06@rambler.ru
				                					                																			                												                	Rússia, 							ul. Vavilova 32, Moscow, 119991						
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