Metabolic programming and immune suppression in the tumor microenvironment
Cet article analyse comment les programmes métaboliques des cellules du microenvironnement tumoral favorisent la prolifération des cellules cancéreuses, la progression de la tumeur, le processus métastatique et l'échappement immunitaire puis identifie des stratégies ciblant les voies métaboliques pour lever l'immunosuppression ou améliorer l'efficacité des immunothérapies
Increased glucose metabolism and uptake are characteristic of many tumors and used clinically to diagnose and monitor cancer progression. In addition to cancer cells, the tumor microenvironment (TME) encompasses a wide range of stromal, innate, and adaptive immune cells. Cooperation and competition between these cell populations supports tumor proliferation, progression, metastasis, and immune evasion. Cellular heterogeneity leads to metabolic heterogeneity because metabolic programs within the tumor are dependent not only on the TME cellular composition but also on cell states, location, and nutrient availability. In addition to driving metabolic plasticity of cancer cells, altered nutrients and signals in the TME can lead to metabolic immune suppression of effector cells and promote regulatory immune cells. Here we discuss how metabolic programming of cells within the TME promotes tumor proliferation, progression, and metastasis. We also discuss how targeting metabolic heterogeneity may offer therapeutic opportunities to overcome immune suppression and augment immunotherapies.
Cancer Cell 2023