Surplus Ceramides: An Added Twist in the Tale of TREM2 and Insulin Resistance

Triggering receptor expressed on myeloid cells 2 (TREM2) is highly expressed by innate immune cells and has been implicated in a variety of diseases, including Alzheimer disease, cancer, and diabetes. TREM2 binds a wide array of ligands signaling tissue damage (1), including pathogenic lipids, which can elicit highly variable effects (both in terms of magnitude and direction) on downstream signaling pathways in a ligand-specific manner (2)....