Pancreatic islet-immune cell paracrine crosstalk

Pancreatic islet-immune cell paracrine crosstalk refers to the complex, bidirectional communication between insulin-producing beta cells and various immune cell populations within the pancreatic microenvironment (Nature Reviews Endocrinology, 2018). In healthy states, this interaction maintains islet homeostasis; however, in diseases like Type 1 and Type 2 diabetes, it becomes dysregulated, leading to insulitis and beta cell failure (Frontiers in Endocrinology, 2020). Beta cells can release 'danger signals' or chemokines like CCL2 that recruit and activate immune cells, which in turn secrete pro-inflammatory cytokines such as IL-1beta, IFN-gamma, and TNF-alpha (Journal of Clinical Investigation, 2017). These cytokines impair insulin secretion and induce beta cell apoptosis, creating a self-perpetuating cycle of inflammation and tissue damage (Diabetes Care, 2019). Therapeutic strategies targeting this interaction, such as the anti-CD3 antibody Teplizumab or IL-1 receptor antagonists like Anakinra, aim to interrupt these paracrine feedback loops to preserve functional beta cell mass (NIH/NIDDK, 2023). This 'target' represents a physiological process involving multiple molecular pathways rather than a single discrete protein or receptor.

Other names

Islet-immune crosstalkBeta cell-immune system interactionParacrine islet inflammationInsulitis-associated paracrine signaling

Modulation of the bidirectional signaling between pancreatic beta cells and immune cells to prevent beta cell destruction or dysfunction.