The multifaceted Paneth cell

• Published in: Cellular and molecular life sciences : CMLS Vol. 59; no. 1; pp. 156 - 170
• Main Authors: Porter, E M, Bevins, C L, Ghosh, D, Ganz, T
• Format: Journal Article
• Language: English
• Published: Switzerland Springer Nature B.V 01.01.2002; Birkhäuser Verlag
• Subjects: Animal models; Animals; Anti-Infective Agents - metabolism; Cellular biology; Cytokines; Cytokines - pharmacology; Humans; Immunology; Inflammation - metabolism; Inflammation - pathology; Inflammatory bowel disease; Intestinal Diseases - metabolism; Intestinal Diseases - pathology; Metals, Heavy - metabolism; Pancreas - cytology; Pancreas - enzymology; Pancreas - metabolism; Paneth Cells - cytology; Paneth Cells - drug effects; Paneth Cells - metabolism; Paneth Cells - microbiology; Peptides; Protein Processing, Post-Translational; Radiotherapy - adverse effects
• ISSN: 1420-682X; 1420-9071
• DOI: 10.1007/s00018-002-8412-z

Paneth cells (PCs) were described over a century ago as granulated cells located at the base of small intestinal crypts, the 'crypts of Lieberkühn.' Various histochemical staining procedures were developed that identified PCs based on their distinctive granule-staining pattern. Early on, PCs were proposed to perform a specialized function other than absorption of digested nutrients, the predominant task of the small intestinal epithelium. Since then, many constituents of the PC granules have been biochemically characterized. The presence of various granule-associated antimicrobial substances and their release upon microbial challenge suggest that PCs function as specialized defense cells in the small intestine. Altered resistance to microbial infection in animal models with disrupted or augmented PC function provides further support for the host defense role of PCs. Other PC components suggest that PCs may also participate in the regulation of lumenal ionic composition, crypt development, digestion, and intestinal inflammation.