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2016 ; 7
(50
): 82200-82212
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Effective elimination of adult B-lineage acute lymphoblastic leukemia by
disulfiram/copper complex in vitro and in vivo in patient-derived xenograft
models
#MMPMID27203215
Deng M
; Jiang Z
; Li Y
; Zhou Y
; Li J
; Wang X
; Yao Y
; Wang W
; Li P
; Xu B
Oncotarget
2016[Dec]; 7
(50
): 82200-82212
PMID27203215
show ga
Disulfiram (DS), a clinically used drug to control alcoholism, has displayed
promising anti-cancer activity against a wide range of tumors. Here, we
demonstrated that DS/copper (Cu) complex effectively eliminated adult B-ALL cells
in vitro and in vivo in patient-derived xenograft (PDX) humanized mouse models,
reflected by inhibition of cell proliferation, induction of apoptosis,
suppression of colony formation, and reduction of PDX tumor growth, while sparing
normal peripheral blood mononuclear cells. Mechanistically, these events were
associated with disruption of mitochondrial membrane potential and
down-regulation of the anti-apoptotic proteins Bcl-2 and Bcl-xL. Further analysis
on B-ALL patients' clinical characteristics revealed that the ex vivo efficacy of
DS/Cu in primary samples was significantly correlated to p16 gene deletion and
peripheral blood WBC counts at diagnosis, while age, LDH level, extramedullary
infiltration, status post intensive induction therapy, immune phenotype, risk
category, and Ph chromosome had no effect. Together, these findings indicate that
disulfiram, particularly when administrated in combination with copper, might
represent a potential repurposing agent for treatment of adult B-ALL patients,
including those clinically characterized by one or more adverse prognostic
factors.