Alterations in tumour suppressor gene p53 in human gliomas from Indian patients.
Alterations in tumour suppressor p53 gene are the most common defects seen in a variety of human cancers. In order to study the significance of the p53 gene in the genesis and development of human glioma from Indian patients, we checked 44 untreated primary gliomas for mutations in exons 5-9 of the p53 gene by PCR-SSCP and DNA sequencing. Sequencing analysis revealed six missense mutations. The incidence of p53 mutations was 13.6% (6 of 44). All the six mutations were found to be located in the central core domain of p53, which carries the sequence-specific DNA-binding domain. These results suggest a rather low incidence but a definite involvement of p53 mutations in the gliomas of Indian patients.
Phatak
Poornima
P
Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore 560 012, India.
Selvi
S Kalai
SK
Divya
T
T
Hegde
A S
AS
Hegde
Sridevi
S
Somasundaram
Kumaravel
K
D000293:Adolescent; D000328:Adult; D000368:Aged; D001932:Brain Neoplasms / Q000235:genetics* / Q000378:metabolism*; D005091:Exons; D005260:Female; D016158:Genes, p53; D005910:Glioma / Q000235:genetics* / Q000378:metabolism*; D006801:Humans; D007194:India; D008297:Male; D008875:Middle Aged; D009154:Mutation; D020125:Mutation, Missense; D016133:Polymerase Chain Reaction; D012150:Polymorphism, Restriction Fragment Length; D018807:Polymorphism, Single-Stranded Conformational; D017422:Sequence Analysis, DNA; D016159:Tumor Suppressor Protein p53 / Q000378:metabolism*
D016159:Tumor Suppressor Protein p53