NT5E and glioma: To evaluate the therapeutic effect, the miR-21 inhibitor-Dex complex was injected intravenously into C57BL/6 mice implanted in situ with GL261 cells, and we found that the percentage of MDSCs, CD73 expression on MDSCs and T-cell-suppressing function of MDSCs infiltrating in glioma were reduced (Fig. 6F-H).