Tumor battlefield within inflamed, excluded or desert immune phenotypes: the mechanisms and strategies

Siwei Zheng,Wenwen Wang,Lesang Shen,Yao Yao,Wenjie Xia,Chao Ni

Published 2024 in Experimental Hematology & Oncology

ABSTRACT

The tumor microenvironment demonstrates great immunophenotypic heterogeneity, which has been leveraged in traditional immune-hot/cold tumor categorization based on the abundance of intra-tumoral immune cells. By incorporating the spatial immune contexture, the tumor immunophenotype was further elaborated into immune-inflamed, immune-excluded, and immune-desert. However, the mechanisms underlying these different immune phenotypes are yet to be comprehensively elucidated. In this review, we discuss how tumor cells and the tumor microenvironment interact collectively to shape the immune landscape from the perspectives of tumor cells, immune cells, the extracellular matrix, and cancer metabolism, and we summarize potential therapeutic options according to distinct immunophenotypes for personalized precision medicine.

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