Multiple cell types via paracrine signaling

Multiple cell types via paracrine signaling refers to a fundamental mechanism of local intercellular communication where signaling molecules (ligands) secreted by one cell type affect the behavior of adjacent cell types (Alberts et al., 2002). This process is essential for maintaining tissue homeostasis and coordinating complex physiological responses such as inflammation, immune cell recruitment, and wound healing. In the context of oncology, paracrine signaling between tumor cells and the surrounding microenvironment—including fibroblasts, immune cells, and endothelial cells—plays a critical role in tumor progression, angiogenesis, and immune evasion (Hanahan & Weinberg, 2011). Because this term encompasses a broad biological process involving numerous distinct molecular entities, it does not constitute a single, druggable therapeutic target. Therapeutic intervention in paracrine pathways requires the identification and targeting of specific ligands, such as Vascular Endothelial Growth Factor (VEGF) or Tumor Necrosis Factor-alpha (TNF-alpha), or their cognate receptors, rather than the signaling modality itself. Consequently, this entry is classified as a biological mechanism rather than a discrete molecular target for drug development.

Other names

Paracrine signalingLocal cell-to-cell communicationParacrine mechanismIntercellular signaling

Not applicable as this refers to a biological process/mechanism rather than a specific molecular target.