Possibility of selection against mtDNA mutations in tumors.

Abstract:

:Several studies of tumors have revealed substantial numbers of clonally expanded somatic mutations in mitochondrial DNA (mtDNA), not observed in adjacent intact tissues. These findings were interpreted as indicating the involvement of mtDNA mutations in tumorigenesis. Such comparisons, however, ignore an important confounding factor: the monoclonal origin of tumors as opposed to the highly polyclonal nature of normal tissues. Analysis of recently published data on the incidence of somatic mutations in nontumor monoclonal cells suggests that, contrary to the prevailing view, the process of tumorigenesis may be accompanied by active selection against detrimental mtDNA mutations.

journal_name

Mol Cancer

journal_title

Molecular cancer

authors

Khaidakov M,Shmookler Reis RJ

doi

10.1186/1476-4598-4-36

keywords:

subject

Has Abstract

pub_date

2005-09-13 00:00:00

pages

36

issn

1476-4598

pii

1476-4598-4-36

journal_volume

4

pub_type

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