STAT5 phospho-flow cytometry

AP Ami B. Patel
AP Anthony D. Pomicter
DY Dongqing Yan
AE Anna M. Eiring
OA Orlando Antelope
JS Jonathan A. Schumacher
TK Todd W. Kelley
ST Srinivas K. Tantravahi
TK Tibor J. Kovacsovics
PS Paul J. Shami
TO Thomas O’Hare
MD Michael W. Deininger
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Flow cytometry was performed with Alexa Fluor 647 mouse anti-pSTAT5Y694 (clone 47, BD Biosciences). MOLM-13 cells were cultured in CM for 4 hours prior to administration of quizartinib and candidate inhibitors. Inhibitors were identified by literature review of kinases implicated in STAT5 phosphorylation in AML. Cells were harvested following 4 hours of culture with inhibitor, fixed (BD Phosflow Fix Buffer I) and permeabilized (BD Phosflow Perm Buffer III). Cells were analyzed for fluorescence intensity on a BD LSRFortessa cell analyzer.

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