Research progress on the mechanisms of tumor immune microenvironment and therapeutic interactions

The tumor immune microenvironment plays a crucial role in the initiation and progression of tumors, and is closely related to the long-term effectiveness of treatments. Notably, while being influenced by the microenvironment, treatment can also actively reshape the composition of the microenvironment. In recent years, with the help of emerging technologies such as single-cell sequencing, the interactions between various therapeutic approaches and the immune microenvironment, as well as their impact on therapeutic efficacy, have been revealed in various tumors. This review summarizes the impact of primary tumor immune microenvironments on therapeutic efficacy, introduces the remodeling of microenvironment by different therapeutic approaches, and explores the intricate regulatory mechanisms governing secondary immune microenvironments' interactions with tumors and their implications on treatment outcomes. Clarifying the mechanisms of interactions between the tumor immune microenvironment and treatments has profound implications for monitoring and predicting treatment outcomes, as well as for optimizing cancer therapy.