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Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Cell+Stem+Cell 2016 ; 19 (1): 23-37 Nephropedia Template TP
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Leukemic stem cells evade chemotherapy by metabolic adaptation to an adipose tissue niche #MMPMID27374788
Ye H; Adane B; Khan N; Sullivan T; Minhajuddin M; Gasparetto M; Stevens B; Pei S; Balys M; Ashton JM; Klemm DJ; Woolthuis CM; Stranahan AW; Park CY; Jordan CT
Cell Stem Cell 2016[Jul]; 19 (1): 23-37 PMID27374788show ga
Adipose tissue (AT) has previously been identified as an extra-medullary reservoir for normal hematopoietic stem cells (HSCs) and may promote tumor development. Here, we show a subpopulation of leukemic stem cells (LSCs) can utilize gonadal adipose tissue (GAT) as a niche to support their metabolism and evade chemotherapy. In a mouse model of blast crisis CML, adipose-resident LSCs exhibit a pro-inflammatory phenotype and induce lipolysis in GAT. GAT lipolysis fuels fatty acid oxidation in LSCs, especially within a subpopulation expressing the fatty acid transporter CD36. CD36+ LSCs have unique metabolic properties, are strikingly enriched in AT, and are protected from chemotherapy by the GAT microenvironment. CD36 also marks a fraction of human blast crisis CML and AML cells with similar biological properties. These findings suggest striking interplay between leukemic cells and adipose tissue to create a unique microenvironment that supports the metabolic demands and survival of a distinct LSC subpopulation.