p53 mutations in human cancers
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TLDR
The p53 mutational spectrum differs among cancers of the colon, lung, esophagus, breast, liver, brain, reticuloendothelial tissues, and hemopoietic tissues as mentioned in this paper.Abstract:
Mutations in the evolutionarily conserved codons of the p53 tumor suppressor gene are common in diverse types of human cancer. The p53 mutational spectrum differs among cancers of the colon, lung, esophagus, breast, liver, brain, reticuloendothelial tissues, and hemopoietic tissues. Analysis of these mutations can provide clues to the etiology of these diverse tumors and to the function of specific regions of p53. Transitions predominate in colon, brain, and lymphoid malignancies, whereas G:C to T:A transversions are the most frequent substitutions observed in cancers of the lung and liver. Mutations at A:T base pairs are seen more frequently in esophageal carcinomas than in other solid tumors. Most transitions in colorectal carcinomas, brain tumors, leukemias, and lymphomas are at CpG dinucleotide mutational hot spots. G to T transversions in lung, breast, and esophageal carcinomas are dispersed among numerous codons. In liver tumors in persons from geographic areas in which both aflatoxin B1 and hepatitis B virus are cancer risk factors, most mutations are at one nucleotide pair of codon 249. These differences may reflect the etiological contributions of both exogenous and endogenous factors to human carcinogenesis.read more
Citations
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WAF1, a potential mediator of p53 tumor suppression
Wafik S. El-Deiry,Takashi Tokino,Victor E. Velculescu,Daniel B. Levy,Ramon Parsons,Jeffrey M. Trent,D Lin,W. Edward Mercer,Kenneth W. Kinzler,Bert Vogelstein +9 more
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References
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Germ line p53 mutations in a familial syndrome of breast cancer, sarcomas, and other neoplasms
David Malkin,Frederick P. Li,Frederick P. Li,Louise C. Strong,Joseph F. Fraumeni,Camille E. Nelson,Camille E. Nelson,David H. Kim,Jayne Kassel,Magdalena A. Gryka,Farideh Z. Bischoff,Michael A. Tainsky,Stephen H. Friend +12 more
TL;DR: Germ line p53 mutations have been detected in all five LFS families analyzed and can now be examined in additional families with LFS, and in other cancer patients and families with clinical features that might be attributed to the mutation.
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Mutations in the p53 gene occur in diverse human tumour types
Janice M. Nigro,Suzanne J. Baker,Antonette C. Preisinger,J M Jessup,R. Hostetter,Karen R. Cleary,S H Bigner,Nancy E. Davidson,Stephen B. Baylin,Peter Devilee +9 more
TL;DR: It is suggested that most tumours with allelic deletions of chromosome 17p contain p53 point mutations resulting in amino-acid substitutions, and p53 gene mutations are clustered in four 'hot-spots' which exactly coincide with the four most highly conserved regions of the gene.
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Association of human papillomavirus types 16 and 18 E6 proteins with p53.
TL;DR: This study shows that the E6 protein of HPV-16 is capable of binding to the cellular p53 protein, providing further evidence that the human papillomaviruses, the adenovirus type 5, and SV40 may effect similar cellular pathways in transformation.
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T Antigen Is Bound to a Host Protein in Sv40-Transformed Cells
TL;DR: It is reported here that the T antigen in a line of SV40-transformed mouse cells forms an oligomeric complex with a specific cell coded protein.
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Insertion of specific bases during DNA synthesis past the oxidation-damaged base 8-oxodG.
TL;DR: DCMP and dAMP are incorporated selectively opposite 8-oxodG with transient inhibition of chain extension occurring 3' to the modified base, and the potentially mutagenic insertion of dAMP is targeted exclusively to the site of the lesion.