Seven subsets, two fates: mouse γδ T cells in cancer immunity

The importance of γδ T cells in cancer, as defenders against tumorigenesis, was established more than 2 decades ago. Since that time, research using mouse models of cancer has brought to light a nonuniform view of tumor-associated γδ T cells by providing granularity into the role of individual γδ T cell subsets in specific cancer types. In this review, we discuss data that highlight the unique contributions of Vγ1⁺, Vγ4⁺, Vγ5⁺, Vγ6⁺, and Vγ7⁺ cells throughout cancer progression. We delve into their responses to tumors, including both protective and pathogenic functions. We examine how the mechanisms by which these mouse immune cell subsets shape tumor development and spread can be exploited for therapeutic purposes in people with cancer.