RGD Reference Report - Expression of p21(waf1/cip1), p27 (kip1), p63 and Androgen Receptor in Low and High Gleason Score Prostate Cancer. - Rat Genome Database

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Expression of p21(waf1/cip1), p27 (kip1), p63 and Androgen Receptor in Low and High Gleason Score Prostate Cancer.

Authors: Romics, I  Banfi, G  Szekely, E  Krenacs, T  Szende, B 
Citation: Romics I, etal., Pathol Oncol Res. 2008 Apr 16;.
RGD ID: 2293591
Pubmed: PMID:18415709   (View Abstract at PubMed)
DOI: DOI:10.1007/s12253-008-9042-z   (Journal Full-text)

The aim of this study was to investigate the expression of p21(waf1/cip1), p27(kip1), p63 and androgen receptor proteins in relation to serum prostate specific antigen levels in low and high Gleason score prostate cancers. Biopsies of patients suffering from prostate adenocarcinoma of low (3 + 3 to 3 + 4) and high (5 + 4 to 5 + 5) Gleason scores (13 cases each group) were immunostained for positive regulators of cell cycle control (p21(waf1/cip1) and p27(kip1)), and essential markers of normal prostate gland ontogeny (p63) and growth (androgen receptor) to find differentially expressed markers of malignant progression. Serum prostate specific antigen levels were also monitored at the time of biopsy and following anti-androgen therapy. All cases except one in each group were androgen receptor positive. P63 and p21(waf1/cip1) proteins detected in normal basal cell nuclei were lost in all but one studied tumors respectively. P27(kip1) protein, however, was detected in all low Gleason score prostate cancers, but it was found in only 7/13 high score cases. Prostate specific antigen levels, either pre- or post-treatment, did not show strict correlation with the p27(kip1) results. The low to high grade dedifferentiation of prostate adenocarcinoma is accompanied with the down-regulation of p27(kip1) protein, which may be an important molecular sign of the lost cell cycle control.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
Prostatic Neoplasms severityIEP 2293591protein:decreased expression:prostate glandRGD 
Prostatic Neoplasms severityISOCDKN1B (Homo sapiens)2293591; 2293591protein:decreased expression:prostate glandRGD 

Objects Annotated

Genes (Rattus norvegicus)
Cdkn1b  (cyclin-dependent kinase inhibitor 1B)

Genes (Mus musculus)
Cdkn1b  (cyclin dependent kinase inhibitor 1B)

Genes (Homo sapiens)
CDKN1B  (cyclin dependent kinase inhibitor 1B)


Additional Information