Digestive system secretory cells

Digestive system secretory cells collectively describe heterogeneous populations of specialized cells within the gastrointestinal tract that secrete proteins, peptides, mucus, hormones, and other bioactive compounds essential for digestion, protection, and modulation of gastrointestinal function. Major examples include: - Parietal cells: Secrete gastric acid (hydrochloric acid) and intrinsic factor, critical for protein digestion and vitamin B12 absorption[4][7]. - Chief cells: Produce pepsinogen, a precursor of pepsin, for protein digestion[4][7]. - Goblet cells: Secrete mucus to protect and lubricate the GI mucosa[2][6]. - Paneth cells: Secrete antimicrobial peptides, contributing to mucosal defense (mostly in the small intestine)[6]. - Enteroendocrine cells: Produce a variety of hormones (gastrin, CCK, GLP-1, somatostatin, ghrelin, serotonin, etc.), regulating motility, secretion, appetite, and local immune responses[3][4][7]. Each of these classes contains multiple molecular targets (e.g., H+/K+ ATPase in parietal cells, G-protein coupled receptors on EECs, mucins in goblet cells)[1][3]. Therefore, it is essential to refer to specific cell types or the molecular entities they express/secrete if the intent is therapeutic targeting, biomarker development, or disease association. “Digestive system secretory cells” as a single target does not have a universally accepted or actionable molecular identity[3][4][7].

Other names

digestive tract secretory cellsGI secretory cellsgastrointestinal secretory cellssecretory cells of the digestive tractsecretory epithelial cells (broad noncanonical)