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2015 ; 20
(12
): 1577-86
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AMBRA1 and SQSTM1 expression pattern in prostate cancer
#MMPMID26423274
Falasca L
; Torino F
; Marconi M
; Costantini M
; Pompeo V
; Sentinelli S
; De Salvo L
; Patrizio M
; Padula C
; Gallucci M
; Piacentini M
; Malorni W
Apoptosis
2015[Dec]; 20
(12
): 1577-86
PMID26423274
show ga
Prostate cancer is among the most commonly diagnosed male diseases and a leading
cause of cancer mortality in men. There is emerging evidence that autophagy plays
an important role in malignant cell survival and offers protection from the
anti-cancer drugs in prostate cancer cells. AMBRA1 and the autophagic protein
sequestosome-1 (SQSTM1; p62) expression were evaluated by immunohistochemistry
and western blot on tissue samples from both benign and malignant prostatic
lesions. The data reported in this pilot study demonstrated an increased
expression of AMBRA1 and SQSTM1, which were also associated with an accumulation
of LC3II in prostate cancer but not in benign lesion. In the present study we
found that: (i) at variance with benign lesion, prostate cancer cells underwent
SQSTM1 accumulation, i.e., clearly displayed a defective autophagic process but,
also, (ii) prostate cancer accumulated AMBRA1 and (iii) this increase positively
correlated with the Gleason score. These results underscore a possible
implication of autophagy in prostate cancer phenotype and of AMBRA1 as possible
cancer progression biomarker in this malignancy.
|Adaptor Proteins, Signal Transducing/*metabolism
[MESH]