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Lohrer, H.D.* ; Hieber, L. ; Zitzelsberger, H.

Differential mutation frequency in mitochondrial DNA from thyroid tumours.

Carcinogenesis 23, 1577-1587 (2002)
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Lack of a chromatin structure and histone protection makes mitochondrial DNA susceptible to oxidative damage. Suboptimal DNA repair leads to a higher frequency of mitochondrial mutations, which are associated with aging, carcinogenesis and environmental insult. The instability of the hypervariable region 11 of the mitochondrial genome was investigated in radiation-associated thyroid tumours, which were diagnosed in children from Belarus after the accident at the Chernobyl nuclear power plant, and from 40 sporadic thyroid tumours from Munich. Two mutations were identified in two out of 126 tumours from Belarus, and eight mutations were found in six out of 40 tumours from Munich. All mutations were deletions or insertions of C in a poly-cytidine (C7TC6) microsatellite. The mutation frequency correlated with the age of the patients at surgery. Mutations with the typical pattern of base substitutions following oxidative DNA damage were not identified.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter mitochondria DNA; mtDNA; MSI
Sprache englisch
Veröffentlichungsjahr 2002
HGF-Berichtsjahr 2002
ISSN (print) / ISBN 0143-3334
e-ISSN 1460-2180
Zeitschrift Carcinogenesis
Quellenangaben Band: 23, Heft: 10, Seiten: 1577-1587 Artikelnummer: , Supplement: ,
Verlag Oxford University Press
Begutachtungsstatus Peer reviewed
Institut(e) Institute of Molecular Radiation Biology (IMS)
Institute of Pathology (PATH)
POF Topic(s)
Forschungsfeld(er)
Enabling and Novel Technologies
PSP-Element(e) FE 70431
Scopus ID 0036799079
Erfassungsdatum 2002-10-28
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