Open AccessPossible Usage of p63 in Bioptic Diagnostics
Author(s) -
Michaela Galoczová,
Rudolf Nenutil,
Philip J. Coates,
Bořivoj Vojtěšek
Publication year - 2018
Publication title -
klinická onkologie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.204
H-Index - 13
eISSN - 1802-5307
pISSN - 0862-495X
DOI - 10.14735/amko20182s27
Subject(s) - stromal cell , carcinogenesis , biology , cancer research , cancer , pathology , gene isoform , prostate cancer , prostate , transcription factor , medicine , gene , genetics
The p63 transcription factor is a p53 homologue; however, its role in development and oncogenesis is more unambiguous than that of p53. TP63 encodes a variety of N-and C-terminal isoforms with different expression patterns and functions. The most frequently studied are N-terminal variants DNp63 (p40) and TAp63. p40 is a characteristic basal or myopithelial cell marker of stratified epithelium and it partakes in the regulation of proliferation and differentiation. The TAp63 isoform is more expressed in the suprabasal cell layer but is also expressed in primary oocytes, lymphocytes and stromal cells. It induces apoptosis and plays a role in the maintenance of genome integrity. The role of each isoform differs also in tumor progression. p40 is generally considered to behave as an oncoprotein in the regulation of cancer stem cells, while TAp63 expression is associated with a better prognosis.