Multiple immune cell populations and inflamed tissue microenvironments

Multiple immune cell populations and inflamed tissue microenvironments refers to the complex ecosystem of various immune cells and the biochemical surroundings in diseased tissue (National Cancer Institute, 2024). This term does not describe a single molecular target like a receptor or enzyme, but rather a physiological state or biological context (Nature Reviews Immunology, 2021). In oncology, this is often referred to as the tumor microenvironment (TME), which includes T cells, macrophages, and fibroblasts that interact to influence tumor growth and immune evasion (PubMed, PMC7350154). In autoimmune conditions, the inflamed microenvironment is characterized by an influx of pro-inflammatory leukocytes and high concentrations of cytokines such as TNF and IL-17 (StatPearls, 2023). Therapeutic strategies targeting this environment often involve multi-target approaches or broad immunomodulators to shift the balance from a pro-disease state to a pro-resolution state (Frontiers in Immunology, 2022). Drugs like checkpoint inhibitors or anti-cytokine therapies are used to modify these environments, though they act on specific molecules within them rather than the environment as a whole (NIH, 2023). Because it encompasses a wide variety of distinct biological entities, it is classified as a therapeutic context rather than a discrete molecular target. Understanding the spatial and cellular heterogeneity of these environments is crucial for developing effective precision medicines (Cell, 2020).

Other names

Tumor microenvironmentInflammatory microenvironmentImmune landscapeTME

Broad immunomodulation and alteration of the cellular and cytokine composition within diseased tissues.