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. 1985 Oct;5(10):2851-5.
doi: 10.1128/mcb.5.10.2851-2855.1985.

p53 cellular tumor antigen: analysis of mRNA levels in normal adult tissues, embryos, and tumors

A Rogel, M Popliker, C G Webb, M Oren

p53 cellular tumor antigen: analysis of mRNA levels in normal adult tissues, embryos, and tumors

A Rogel et al. Mol Cell Biol. 1985 Oct.

Abstract

The relative levels of mRNA specific for the mouse p53 cellular tumor antigen were determined in various normal adult tissues, embryos, and tumors. All tumors studied contained concentrations of p53 mRNA well above those present in most normal tissues. Normal spleen, however, had p53 mRNA levels comparable to those found in some tumors, despite the fact that they contained barely detectable p53 protein. This apparent discrepancy was found to be due to the extremely rapid turnover rate of p53 in the spleen (half-life, approximately equal to 6 min). In developing fetuses, a marked reduction of p53 mRNA levels was manifest from day 11 onwards, whereas the levels during organogenesis (days 9 to 11) were comparable to those found in undifferentiated embryonic stem cells and in some tumors.

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