Cited by 116Nonmelanoma Skin Cancer StudiesHedgehog Signaling Pathway StudiesCancer and Skin Lesions

Mutations of the p53 and PTCH gene in basal cell carcinomas: UV mutation signature and strand bias

Kim, M·2002·Journal of Dermatological Science

Abstract

Mutations of p53 and PTCH gene, two candidate tumor suppressor genes for basal cell carcinoma (BCC), were screened in 15 cases of sporadic BCCs that developed in sun-exposed skin region in a Korean population. p53 and PTCH mutations were detected at a frequency of 33 and 40%, respectively, and the mutations were predominantly UV-signature transition, C-->T transitions at dipyrimidine sites and CC-->TT tandem mutations. In both genes, the most common mutations were missense mutations resulting in amino acid substitution, which is different than the results from Caucasian BCCs where mutations are frequently predicted to make truncated or absent proteins. All mutations, except for one, occurred on the nontranscribed strand where is little efficient removal of UV-induced pyrimidine dimers relative to the transcribed strand. Loss of heterozygocity (LOH) of 9q22 for PTCH loci was found in eight of 15 informative cases of BCCs (53%), but none of the cases were informative for LOH of 17p13 for p53 loci. Not only do our data indicate the key role played by p53 and PTCH in the development of BCCs, these findings also suggest that UVB may significantly contribute to BCC tumorigenesis. Moreover, molecular epidemiology composed of incidence of p53 and PTCH mutations, difference in the type of mutation and repair bias of UV-induced DNA lesions might affect the distinct features of BCCs between different racial population.

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Crossref · 10.1016/s0923-1811(01)00170-0

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Authors
Kim, M.
Affiliations
Catholic University of Korea (KR)
Corresponding author
Kim, M
ORCID
Kim, M
Venue
Journal of Dermatological Science
Publisher
Elsevier BV
Published
2002-05-01
Volume
29
Issue
1
Pages
1-9
ISSN
0923-1811 (ISSN-L)
OpenAlex
W1970842651
Cited by
116
References
25
Citations by year
2026: 1 · 2025: 2 · 2024: 1 · 2023: 2 · 2022: 3 · 2021: 4 · 2020: 3 · 2019: 3 · 2018: 5 · 2017: 9 · 2016: 6 · 2015: 7 · 2014: 8 · 2013: 4 · 2012: 7
FWCI
4.77
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Dermatological Science (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Epidemiology › Nonmelanoma Skin Cancer Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Hedgehog Signaling Pathway Studies
  • Health Sciences › Medicine › Dermatology › Cancer and Skin Lesions
Keywords
basal cell carcinoma, TP53 mutation, PTCH mutations, strand bias, UV-B radiation, loss of heterozygosity, 17p13, missense mutations, pyrimidine dimer repair, tumor suppressor, sun-exposed skin, molecular epidemiology, racial differences
MeSH terms
Patched Receptors, Patched-1 Receptor, Aged, Aged, 80 and over, Basal Cell Carcinoma, DNA Mutational Analysis, Humans, Korea, Membrane Proteins, Middle Aged, Receptors, Cell Surface, Skin Neoplasms, Ultraviolet Rays, Tumor Suppressor Protein p53, Mutation, Missense, Asian People

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