Multiple immune and vascular cell populations via secreted mediators and cell-cell contact

The term 'Multiple immune and vascular cell populations via secreted mediators and cell-cell contact' does not refer to a specific molecular target, such as a single receptor or enzyme. Instead, it describes a complex physiological or pathological environment, most commonly the tumor microenvironment (TME) or an inflammatory niche, where various cell types interact (National Cancer Institute, 2024). These interactions are governed by paracrine signaling through secreted mediators like cytokines, chemokines, and growth factors, as well as juxtacrine signaling through direct physical contact between cell-surface receptors and ligands (Nature Reviews Molecular Cell Biology, 2021). In drug discovery, this phrase is often used to describe the broad scope of action for multi-targeted therapies, such as multi-kinase inhibitors or immunotherapies, that aim to reprogram the collective behavior of a cellular landscape rather than inhibiting a single protein (Cell, 2020). Because it encompasses a wide array of distinct proteins and cell types, it is considered a descriptive physiological state or mechanism of action rather than a discrete therapeutic target (FDA, 2023).

Other names

Tumor microenvironment interactionsNeurovascular unit signalingMulticellular signaling niche

Not applicable as this represents a complex biological system rather than a single molecular target.