Granulocytic myeloid-derived suppressor cells(G-MDSCs)are one of the main subgroups of MD-SCs,which are widely enriched in most cancers.It can inhibit the killing function of T-lymphocyte through the expression of arginase-1(Arg-1)and reactive oxygen species(ROS),reshape the tumor immune microenvironment,and promote the oc-currence and development of tumors.In recent years,more and more studies have found that G-MDSCs are significantly cor-related with the prognosis and immunotherapy efficacy of patients with non-small cell lung cancer,and the use of drugs specifi-cally targeting the recruitment,differentiation and function of G-MDSCs can effectively inhibit tumor progression.This article reviews the immunosuppressive effect of G-MDSCs in non-small cell lung cancer and the progress of related pathway targeting drugs.
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