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Prognostic value of increase in transcript levels of Tp73 DeltaEx2-3 isoforms in low-grade glioma patients.
- Source :
-
British journal of cancer [Br J Cancer] 2006 Oct 23; Vol. 95 (8), pp. 1062-9. - Publication Year :
- 2006
-
Abstract
- Glial tumours are a devastating, poorly understood condition carrying a gloomy prognosis for which clinicians sorely lack reliable predictive parameters facilitating a sound treatment strategy. Tp73, a p53 family member, expresses two main classes of isoforms--transactivatory activity (TA)p73 and DeltaTAp73--exhibiting tumour suppressor gene and oncogene properties, respectively. The authors examined their expression status in high- and low-grade adult gliomas. Isoform-specific real-time reverse transcription-polymerase chain reaction was used for the analysis of Tp73 isoform transcript expression in a series of 51 adult patients harbouring glial tumours, in order to compare tumour grades with each other, and with non-tumoural samples obtained from epileptic patients as well. Our data demonstrate increase of TAp73 and DeltaTAp73 transcript levels at onset and early stage of the disease. We also show that DeltaEx2-3 isoform expression in low-grade tumours anticipates clinical and imaging progression to higher grades, and correlates to the patients' survival. Expression levels of P1 promoter generated Tp73 isoforms--and particularly DeltaEx2-3--indeed allow for prediction of the clinical progression of low-grade gliomas in adults. Our data are the first such molecular biology report regarding low-grade tumours and as such should be of help for sound decision-making.
- Subjects :
- Adult
Aged
Gene Expression Regulation, Neoplastic
Glioma genetics
Humans
Kaplan-Meier Estimate
Middle Aged
Multivariate Analysis
Prognosis
Promoter Regions, Genetic genetics
Protein Isoforms genetics
RNA, Neoplasm genetics
RNA, Neoplasm metabolism
Alternative Splicing
DNA-Binding Proteins genetics
Glioma pathology
Nuclear Proteins genetics
Transcription, Genetic genetics
Tumor Suppressor Proteins genetics
Subjects
Details
- Language :
- English
- ISSN :
- 0007-0920
- Volume :
- 95
- Issue :
- 8
- Database :
- MEDLINE
- Journal :
- British journal of cancer
- Publication Type :
- Academic Journal
- Accession number :
- 17047653
- Full Text :
- https://doi.org/10.1038/sj.bjc.6603410