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2018 ; 9
(ä): 977
Nephropedia Template TP
gab.com Text
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English Wikipedia
Immunomodulatory Drugs Exert Anti-Leukemia Effects in Acute Myeloid Leukemia by
Direct and Immunostimulatory Activities
#MMPMID29780393
Le Roy A
; Prébet T
; Castellano R
; Goubard A
; Riccardi F
; Fauriat C
; Granjeaud S
; Benyamine A
; Castanier C
; Orlanducci F
; Ben Amara A
; Pont F
; Fournié JJ
; Collette Y
; Mege JL
; Vey N
; Olive D
Front Immunol
2018[]; 9
(ä): 977
PMID29780393
show ga
Immunomodulatory drugs (IMiDs) are anticancer drugs with immunomodulatory,
anti-angiogenesis, anti-proliferative, and pro-apoptotic properties. IMiDs are
currently used for the treatment of multiple myeloma, myelodysplastic syndrome,
and B-cell lymphoma; however, little is known about efficacy in acute myeloid
leukemia (AML). We proposed in this study to investigate the relevance of IMiDs
therapy for AML treatment. We evaluated the effect of IMiDs on primary AML blasts
(n?=?24), and the impact in natural killer (NK) cell-mediated immunosurveillance
of AML. Using primary AML cells and an immunodeficient mouse leukemia xenograft
model, we showed that IMiDs induce AML cell death in vitro and impair leukemia
progression in vivo. In addition, treatment of AML blasts with IMiDs resulted in
enhanced allogeneic NK cell anti-leukemia reactivity. Treatment by pomalidomide
of AML blasts enhanced lysis, degranulation, and cytokine production by primary
allogeneic NK cells. Furthermore, the treatment with lenalidomide of patients
with myeloid malignancies resulted in NK cell phenotypic changes similar to those
observed in vitro. IMiDs increased CD56 and decreased NKp30, NKp46, and KIR2D
expression on NK cells. Finally, AML blasts treatment with IMiDs induced
phenotypic alterations including downregulation of HLA-class I. The effect of
pomalidomide was not correlated with cereblon expression and A/G polymorphism in
AML cells. Our data revealed, a yet unobserved, dual effects on AML affecting
both AML survival and their sensitivity to NK immunotherapy using IMiDs. Our
study encourages continuing investigation for the use of IMiDs in AML, especially
in combination with conventional therapy or immunotherapy strategies.