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PMID:11522642
| Citation |
Suliman, Y, Opitz, OG, Avadhani, A, Burns, TC, El-Deiry, W, Wong, DT and Rustgi, AK (2001) p63 expression is associated with p53 loss in oral-esophageal epithelia of p53-deficient mice. Cancer Res. 61:6467-73 |
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| Abstract |
The p53 gene family, comprising p53, p63, and p73, has overlapping and distinctive functional roles. These members share structural similarities allowing for dynamic interplay in the activation of genes that are important in development and key cellular functions, such as the induction of apoptosis. Whereas p53 is a classical tumor suppressor gene, p63 and p73 do not share this feature in cancer formation and progression. The compensation in the expression level of these members in a background that is deficient for one of them has not been examined previously. Given the importance of p63 in the development and differentiation of oral-esophageal stratified squamous epithelia and the absence of oral-esophageal tumors in p53-null mice, we postulated and describe herein that p63 expression is associated with the loss of p53 in a p53-deficient background. Both full-length and amino-truncated forms of p63 are expressed and increased in oral-esophageal epithelia of p53-null mice when compared with wild-type mice, and the induction of p21 may potentially be preserved through the increase of p63. |
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| Keywords |
Animals; Cell Differentiation/physiology; Cells, Cultured; DNA-Binding Proteins; Epithelium/metabolism; Epithelium/physiology; Esophagus/cytology; Esophagus/metabolism; Esophagus/physiology; Genes, Tumor Suppressor; Genes, p53/physiology; Humans; Immunohistochemistry; Membrane Proteins; Mice; Mouth Mucosa/cytology; Mouth Mucosa/metabolism; Mouth Mucosa/physiology; Phosphoproteins/biosynthesis; Phosphoproteins/genetics; Trans-Activators/biosynthesis; Trans-Activators/genetics; Transcription Factors; Transfection; Tumor Cells, Cultured; Tumor Suppressor Protein p53/deficiency; Tumor Suppressor Protein p53/genetics; Tumor Suppressor Proteins |
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Significance
Annotations
| Gene product | Qualifier | GO ID | GO term name | Evidence Code | with/from | Aspect | Notes | Status |
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