Title : Isocitrate dehydrogenase 1 mutations prime the all-trans retinoic acid myeloid differentiation pathway in acute myeloid leukemia.

Pub. Date : 2016 Apr 4

PMID : 26951332






6 Functional Relationships(s)
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1 We show that treatment with all-trans retinoic acid (ATRA) at clinically achievable doses markedly enhanced terminal granulocytic differentiation in AML cell lines, primary patient samples, and a xenograft mouse model carrying mutant IDH1. Tretinoin isocitrate dehydrogenase (NADP(+)) 1 Homo sapiens
2 We show that treatment with all-trans retinoic acid (ATRA) at clinically achievable doses markedly enhanced terminal granulocytic differentiation in AML cell lines, primary patient samples, and a xenograft mouse model carrying mutant IDH1. Tretinoin isocitrate dehydrogenase (NADP(+)) 1 Homo sapiens
3 Moreover, treatment with a cell-permeable form of 2-HG sensitized wild-type IDH1 AML cells to ATRA-induced myeloid differentiation, whereas inhibition of 2-HG production significantly reduced ATRA effects in mutant IDH1 cells. Tretinoin isocitrate dehydrogenase (NADP(+)) 1 Homo sapiens
4 ATRA treatment specifically decreased cell viability and induced apoptosis of mutant IDH1 blasts in vitro. Tretinoin isocitrate dehydrogenase (NADP(+)) 1 Homo sapiens
5 ATRA also reduced tumor burden of mutant IDH1 AML cells xenografted in NOD-Scid-IL2rgamma(null)mice and markedly increased overall survival, revealing a potent antileukemic effect of ATRA in the presence of IDH1 mutation. Tretinoin isocitrate dehydrogenase (NADP(+)) 1 Homo sapiens
6 ATRA also reduced tumor burden of mutant IDH1 AML cells xenografted in NOD-Scid-IL2rgamma(null)mice and markedly increased overall survival, revealing a potent antileukemic effect of ATRA in the presence of IDH1 mutation. Tretinoin isocitrate dehydrogenase (NADP(+)) 1 Homo sapiens