Bone Marrow Mesenchymal Stem Cells Support Acute Myeloid Leukemia Bioenergetics and Enhance Antioxidant Defense and Escape from Chemotherapy.
Accepted version
Peer-reviewed
Repository URI
Repository DOI
Change log
Authors
Abstract
Like normal hematopoietic stem cells, leukemic stem cells depend on their bone marrow (BM) microenvironment for survival, but the underlying mechanisms remain largely unknown. We have studied the contribution of nestin+ BM mesenchymal stem cells (BMSCs) to MLL-AF9-driven acute myeloid leukemia (AML) development and chemoresistance in vivo. Unlike bulk stroma, nestin+ BMSC numbers are not reduced in AML, but their function changes to support AML cells, at the expense of non-mutated hematopoietic stem cells (HSCs). Nestin+ cell depletion delays leukemogenesis in primary AML mice and selectively decreases AML, but not normal, cells in chimeric mice. Nestin+ BMSCs support survival and chemotherapy relapse of AML through increased oxidative phosphorylation, tricarboxylic acid (TCA) cycle activity, and glutathione (GSH)-mediated antioxidant defense. Therefore, AML cells co-opt energy sources and antioxidant defense mechanisms from BMSCs to survive chemotherapy.
Description
Keywords
Journal Title
Conference Name
Journal ISSN
1932-7420
Volume Title
Publisher
Publisher DOI
Sponsorship
NHS Blood and Transplant (NHSBT)
Italian Association for Cancer Research (AIRC) (Fellowship Rif. 20930)
Cancer Research UK (C61367/A26670)
Medical Research Council (MC_UU_12022/6)
European Research Council (647685)
Wellcome Trust (203151/Z/16/Z)
Medical Research Council (MC_PC_12009)
Medical Research Council (MC_PC_17230)
MRC (MR/V005421/1)
Wellcome Trust (109967/Z/15/Z)
Cancer Research UK (26670)
Cancer Research UK (25508)
Cancer Research UK (C57799/A27964)