Multiple immune and stromal cell populations and signaling pathways

The term Multiple immune and stromal cell populations and signaling pathways refers to the integrated biological system comprising various cell types and their communication networks within a tissue, particularly the tumor microenvironment (Source: National Cancer Institute). This system includes diverse immune cells, such as T cells and macrophages, alongside stromal elements like fibroblasts and endothelial cells, which interact through signaling pathways involving VEGF, TGF-beta, and various interleukins (Source: PubMed, PMID: 28131276). In pharmacology, this phrase is frequently used to describe the broad, multi-faceted impact of therapies that aim to reprogram the entire microenvironment rather than inhibiting a single molecular target (Source: Nature Reviews Cancer). For instance, drugs like nintedanib or lenalidomide exert their effects by simultaneously influencing angiogenesis, immune evasion, and stromal support (Source: FDA). Because it encompasses a wide variety of distinct proteins and cell populations, it is classified as a descriptive system rather than a specific, discrete therapeutic target. This holistic view is essential for understanding the efficacy of complex treatments in heterogeneous diseases such as advanced malignancies and chronic inflammatory conditions.

Other names

Tumor microenvironment (TME)Immune-stromal signaling networkTME componentsImmune-stromal axis

Broad modulation of the cellular and molecular landscape of the tissue microenvironment, involving the simultaneous inhibition or activation of multiple receptors and pathways across various cell types (Source: Nature Reviews Drug Discovery).