Regulation of chitinase-3-like-1 in T cell elicits Th1 and cytotoxic responses to inhibit lung metastasis

Chitinase-3-like-1 (Chi3l1) has been involved in inflammation and pulmonary metastasis. Here the authors show that Chi3l1 inhibits the T cell response by negatively regulating their activation and that, in a mouse model of melanoma, T cell-targeted silencing of Chi3l1 results in reduced lung metastasis.