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Published in: Tumor Biology 11/2015

01-11-2015 | Research Article

Mitochondrial genome instability in colorectal adenoma and adenocarcinoma

Authors: Luiza F. de Araujo, Aline S. Fonseca, Bruna R Muys, Jessica R. Plaça, Rafaela B. L. Bueno, Julio C. C. Lorenzi, Anemari R. D. Santos, Greice A. Molfetta, Dalila L. Zanette, Jorge E. S. Souza, Valeria Valente, Wilson A. Silva Jr

Published in: Tumor Biology | Issue 11/2015

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Abstract

Mitochondrial dysfunction is regarded as a hallmark of cancer progression. In the current study, we evaluated mitochondrial genome instability and copy number in colorectal cancer using Next Generation Sequencing approach and qPCR, respectively. The results revealed higher levels of heteroplasmy and depletion of the relative mtDNA copy number in colorectal adenocarcinoma. Adenocarcinoma samples also presented an increased number of mutations in nuclear genes encoding proteins which functions are related with mitochondria fusion, fission and localization. Moreover, we found a set of mitochondrial and nuclear genes, which cooperate in the same mitochondrial function simultaneously mutated in adenocarcinoma. In summary, these results support an important role for mitochondrial function and genomic instability in colorectal tumorigenesis.
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Metadata
Title
Mitochondrial genome instability in colorectal adenoma and adenocarcinoma
Authors
Luiza F. de Araujo
Aline S. Fonseca
Bruna R Muys
Jessica R. Plaça
Rafaela B. L. Bueno
Julio C. C. Lorenzi
Anemari R. D. Santos
Greice A. Molfetta
Dalila L. Zanette
Jorge E. S. Souza
Valeria Valente
Wilson A. Silva Jr
Publication date
01-11-2015
Publisher
Springer Netherlands
Published in
Tumor Biology / Issue 11/2015
Print ISSN: 1010-4283
Electronic ISSN: 1423-0380
DOI
https://doi.org/10.1007/s13277-015-3640-7

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