Journal: Immunometabolism
Article Title: Natural Killer Cells Integrate Signals Received from Tumour Interactions and IL2 to Induce Robust and Prolonged Anti-Tumour and Metabolic Responses
doi: 10.20900/immunometab20190014
Figure Lengend Snippet: ( a–d ) Cultured NK cells (6 days in IL15 10 ng/mL) were purified and then co-cultured with or without B16 melanoma cells at an E:T ratio of 2:1 ( a ), with B16 melanoma cells at an E:T ratio of 4:1, 2:1 or 1:2 ( b ), with or without YAC-1, CT26 and LLC tumour cells at an E:T ratio of 1:4 ( c ), or with or without RMA/RMA-S cells at an E:T ratio of 1:4 ( d ) for 18 h before analysis of CD25 expression by flow cytometry. ( e – k ) Cultured NK cells (6 days in IL15 10 ng/mL) were purified and then co-cultured with B16 melanoma cells for 18 h at an E:T ratio of 2:1, washed and put back into culture with IL15 (7.5 ng/mL) with or without ± IL2 (20 ng/mL) for 18 h before analysis by flow cytometry. ( e ) IFNγ production by CD25 high and CD25 neg NK cells cultured in IL2 alone, with B16 cells or with B16 cells plus IL2. ( f ) IFNγ production in CD25 high NK cells cultured with B16 ± IL2. ( g , h ) Analysis of NK cells cultured with B16 cells + IL2 comparing CD25 high and CD25 neg NK cells (g, left panel) for effector functions, IFNγ production and granzyme (Gnzb) B expression. ( i , j ) Analysis of cell size (FSC), cMyc and CD71 expression, and levels of phosphorylated S6 ribosomal protein (pS6) in CD25 high and CD25 neg NK cells from B16 cells + IL2 co-cultures. ( k,l ) Rates of fluorescent transferrin uptake were measured in CD25 high and CD25 neg NK cells from B16 cells + IL2 co-cultures. Data is representative ( a , c , d , e , g , i , k ) or mean ± SEM (b,f,h,j,l) of 3–5 independent experiments. Data was analyzed using a paired students t -test. (* p < 0.05, ** p < 0.01, *** p < 0.001).
Article Snippet: The cells were thoroughly washed with the standard FACS buffer (20% RPMI in PBS), and were stained for cMyc using PE conjugated cMyc antibody- (D84C12, Cell signalling, Danvers, Massachusetts, USA) for 1 h at RT.
Techniques: Cell Culture, Purification, Expressing, Flow Cytometry