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[Abnormalities of anti-oncogene p53 in renal cell carcinoma]
Abstract:
Mutant forms of p53 gene are found in numerous human malignancies. Studies of the p53 mRNA showed different levels of expression in many tumours. But the relationship between the p53 gene and the renal cell carcinoma is less elucidated than the other. In this report we examined p53 gene at mRNA level by Northern blot on the tissues from 21 patients with renal cell carcinoma. Abnormalities of the p53 were found in 12(57%) tumors, in which seven had elevated level of p53 mRNA, and five lacked p53 mRNA. p53 gene alteration occurred in a high percentage in high-grade and advanced tumors. These results suggest that inactivation of p53 gene is common in renal cell carcinoma and may be involved in the progression of this malignancy.
Insights
Mutant p53 gene alterations are common in renal cell carcinoma, with over half of tumors showing abnormal p53 mRNA levels. These changes may drive cancer progression.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Context:
- Mutant p53 gene forms are prevalent in human cancers.
- p53 mRNA expression varies across different tumor types.
- The role of p53 in renal cell carcinoma (RCC) is not well understood.
Purpose:
- To investigate the expression of the p53 gene at the mRNA level in renal cell carcinoma tissues.
- To determine the frequency and nature of p53 gene abnormalities in RCC.
Summary:
- Examined p53 mRNA levels using Northern blot in 21 RCC patient tissues.
- Found p53 abnormalities in 57% of tumors: 7 with elevated mRNA, 5 lacking mRNA.
- p53 gene alterations were more frequent in high-grade and advanced-stage tumors.
Impact:
- Suggests p53 gene inactivation is common in renal cell carcinoma.
- Indicates a potential role for p53 inactivation in RCC progression.
- Highlights the significance of p53 alterations in high-grade and advanced RCC.