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2016 ; 16
(9
): 2415-27
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gab.com Text
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PML at Mitochondria-Associated Membranes Is Critical for the Repression of
Autophagy and Cancer Development
#MMPMID27545895
Missiroli S
; Bonora M
; Patergnani S
; Poletti F
; Perrone M
; Gafà R
; Magri E
; Raimondi A
; Lanza G
; Tacchetti C
; Kroemer G
; Pandolfi PP
; Pinton P
; Giorgi C
Cell Rep
2016[Aug]; 16
(9
): 2415-27
PMID27545895
show ga
The precise molecular mechanisms that coordinate apoptosis and autophagy in
cancer remain to be determined. Here, we provide evidence that the tumor
suppressor promyelocytic leukemia protein (PML) controls autophagosome formation
at mitochondria-associated membranes (MAMs) and, thus, autophagy induction. Our
in vitro and in vivo results demonstrate how PML functions as a repressor of
autophagy. PML loss promotes tumor development, providing a growth advantage to
tumor cells that use autophagy as a cell survival strategy during stress
conditions. These findings demonstrate that autophagy inhibition could be paired
with a chemotherapeutic agent to develop anticancer strategies for tumors that
present PML downregulation.