Fig. 1: Chiauranib exhibits potent antitumor activity against NKTL in vitro and in vivo.

NKYS and SNK6 cell lines were treated with DMSO or various concentrations of Chiauranib for 0, 12 h, 24 h, and 48 h, respectively. CCK8 assay was performed in both A, B NKYS and C, D SNK6 cell lines. NKYS and SNK6 cell lines were treated with various concentrations of Chiauranib for 48 h. E, F The cells were further incorporated with EdU and detected with flow cytometry. G, H Cell cycle analysis through PI staining was followed by flow cytometry for NKYS and SNK6 cell lines after treatment. I, J Female 4-week-old NOD/SCID mice was intraperitoneally implanted with SNK6 cells. Three weeks after the inoculation of NKTL, cell tumors were excised and processed for immunostaining using a rat anti-mouse CD31 endothelial marker (shown in red arrow). The MVD of the tumors was determined by counting CD31-positive areas in 10 fields/serial tumor sections from five animals per group (shown in red arrow).