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- W2046345348 abstract "P53 is one of the most important tumor suppressor proteins in human cancers. Mutations in the TP53 gene are common features of malignant tumors and normally correlate to a more aggressive disease. In breast cancer, these gene alterations are present in approximately 20% of cases and are characteristically of missense type. In the present work we describe TP53 mutations in breast cancer biopsies and investigate whether wild and mutant p53 participate in protein aggregates formation in these breast cancer cases. We analyzed 88 biopsies from patients residing in the metropolitan area of Rio de Janeiro, and performed TP53 mutation screening using direct sequencing of exons 5–10. Seventeen mutations were detected, 12 of them were of missense type, 2 nonsenses, 2 deletions and 1 insertion. The presence of TP53 mutation was highly statistically associated to tumor aggressiveness of IDC cases, indicated here by Elston Grade III (p < 0.0001). Paraffin embedded breast cancer tissues were analyzed for the presence of p53 aggregates through immunofluorescence co-localization assay, using anti-aggregate primary antibody A11, and anti-p53. Our results show that mutant p53 co-localizes with amyloid-like protein aggregates, depending on mutation type, suggesting that mutant p53 may form aggregates in breast cancer cells, in vivo." @default.
- W2046345348 created "2016-06-24" @default.
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- W2046345348 date "2011-01-01" @default.
- W2046345348 modified "2023-10-18" @default.
- W2046345348 title "Co-localization of mutant p53 and amyloid-like protein aggregates in breast tumors" @default.
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- W2046345348 doi "https://doi.org/10.1016/j.biocel.2010.10.017" @default.
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