Naslov
TP53 mutational signature for aristolochic acid: an environmental carcinogen

Autori
Slade, Neda ; Moriya, Masaaki ; Brdar, Branko ; Medverec, Zvonimir ; Tomic, Karla ; Jelaković, Bojan ; Wu, Lin ; Truong, Sim ; Karanović, Sandra ; Chung-Hsin, Chen ; Yeong-Shiau, Pu ; Dickman, Kathleen G. ; Turesky, Robert J. ; Fernandes, Andrea: Grollman, Arthur P.

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
5th Mutant p53 Workshop / - Rim, 2011, 125-125

Skup
5th Mutant p53 Workshop

Mjesto i datum
Rim, Italija; Ariccia, Italija, 22.05.2011. - 25.05.2011

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
aristolochic acid; TP53; signature mutation; urothelial cancer; Balkan endemic nephropathy; Taiwan

Sažetak
This study was designed to establish the TP53 mutational spectrum of aristolochic acid (AA), examined in the context of endemic (Balkan) nephropathy, an environmental disease associated with transitional cell (urothelial) carcinomas of the upper urinary tract (UUC). Tumor tissue was obtained from residents of regions in Bosnia, Croatia and Serbia where endemic nephropathy has been prevalent for over 50 years. Fifty-nine TP53 mutations were detected in 42 of the 97 tumors analyzed. Mutational spectra were dominated by A:T to T:A transversions with the mutated adenines located almost exclusively on the nontranscribed strand. This marked strand bias is attributed to selective processing of aristolactam-dA adducts by transcription-coupled nucleotide excision repair. Hotspots for A:T to T:A mutations include codons 131 and 179 and the 5'-AG acceptor splice site of intron 6. The unique TP53 mutational signature for AA identified in this study can be used to explore the hypothesis that botanical products containing this human carcinogen and nephrotoxin are responsible, in part, for the high prevalence of UUC cancers and chronic renal disease in countries where Aristolochia herbal remedies traditionally have been used for medicinal purposes.

Izvorni jezik
Engleski

Znanstvena područja
Biologija, Temeljne medicinske znanosti

POVEZANOST RADA