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Ravi Majeti

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https://www.readbyqxmd.com/read/27806325/inhibiting-glutaminase-in-acute-myeloid-leukemia-metabolic-dependency-of-selected-aml-subtypes
#1
Polina Matre, Juliana Velez, Rodrigo Jacamo, Yuan Qi, Xiaoping Su, Tianyu Cai, Steven M Chan, Alessia Lodi, Shannon R Sweeney, Helen Ma, Richard Eric Davis, Natalia Baran, Torsten Haferlach, Xiaohua Su, Elsa Renee Flores, Doriann Gonzalez, Sergej Konoplev, Ismael Samudio, Courtney DiNardo, Ravi Majeti, Aaron D Schimmer, Weiqun Li, Taotao Wang, Stefano Tiziani, Marina Konopleva
Metabolic reprogramming has been described as a hallmark of transformed cancer cells. In this study, we examined the role of the glutamine (Gln) utilization pathway in acute myeloid leukemia (AML) cell lines and primary AML samples. Our results indicate that a subset of AML cell lines is sensitive to Gln deprivation. Glutaminase (GLS) is a mitochondrial enzyme that catalyzes the conversion of Gln to glutamate. One of the two GLS isoenzymes, GLS1 is highly expressed in cancer and encodes two different isoforms: kidney (KGA) and glutaminase C (GAC)...
October 27, 2016: Oncotarget
https://www.readbyqxmd.com/read/27092773/anti-cd47-treatment-stimulates-phagocytosis-of-glioblastoma-by-m1-and-m2-polarized-macrophages-and-promotes-m1-polarized-macrophages-in-vivo
#2
Michael Zhang, Gregor Hutter, Suzana A Kahn, Tej D Azad, Sharareh Gholamin, Chelsea Y Xu, Jie Liu, Achal S Achrol, Chase Richard, Pia Sommerkamp, Matthew Kenneth Schoen, Melissa N McCracken, Ravi Majeti, Irving Weissman, Siddhartha S Mitra, Samuel H Cheshier
Tumor-associated macrophages (TAMs) represent an important cellular subset within the glioblastoma (WHO grade IV) microenvironment and are a potential therapeutic target. TAMs display a continuum of different polarization states between antitumorigenic M1 and protumorigenic M2 phenotypes, with a lower M1/M2 ratio correlating with worse prognosis. Here, we investigated the effect of macrophage polarization on anti-CD47 antibody-mediated phagocytosis of human glioblastoma cells in vitro, as well as the effect of anti-CD47 on the distribution of M1 versus M2 macrophages within human glioblastoma cells grown in mouse xenografts...
2016: PloS One
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