In some embodiments, the methods involve the use of a combination of at least two of the following: an inhibitor of indoleamine-2,3-dioxygenase (IDO), an inhibitor of the PD-L1/PD-1 pathway, an inhibitor of CTLA-4, an inhibitor of CD25, or IL-7. The inventors particularly observed a major synergistic effect of combining anti-CTLA-4 with either an IDO inhibitor, with anti-PD-L1 mAb, or with CD-25 depletion. Such combinations have been found to demonstrate a synergistic effect in treating cancer and tumors, for example by reducing tumor size, increasing the percentage of antigen-specific T cells, and increasing T cell function.
在某些实施方案中,该方法涉及使用以下至少两种组合:indoleamine-2,3-dioxygenase(
IDO)的
抑制剂,PD-L1 / PD-1途径的
抑制剂,CT
LA-4的
抑制剂,CD25的
抑制剂或IL-7。发明人特别观察到将抗CT
LA-4与
IDO抑制剂,抗PD-L1 mAb或CD-25耗竭相结合具有重大的协同作用。已发现这些组合在治疗癌症和肿瘤方面具有协同作用,例如通过减小肿瘤大小,增加特异性抗原T细胞的百分比和增加T细胞功能。