miR-130a and miR-145 reprogram Gr-1+CD11b+ myeloid cells and inhibit tumor metastasis through improved host immunity

Abstract

Tumours produce soluble factors that contribute to the expansion of Gr-1+CD11b+ immature myeloid cells with TGFβ dependent immune suppressive function. Here, the authors show miR-130a and miR-145 target TβRII and reprogram these cells by altering the cytokine microenvironment, improving anti-tumour immunity and inhibiting metastasis in preclinical mouse models.