{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T04:33:47Z","timestamp":1787027627446,"version":"build-2736575974"},"reference-count":102,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2021,11,29]],"date-time":"2021-11-29T00:00:00Z","timestamp":1638144000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Winkler Bacterial Overgrowth Research Fund","award":["BRINM-217"],"award-info":[{"award-number":["BRINM-217"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Biomolecules"],"abstract":"<jats:p>Intestinal alkaline phosphatase (IAP) is a multi-functional protein that has been demonstrated to primarily protect the gut. The role of IAP in maintaining intestinal homeostasis is underscored by the observation that IAP expression is defective in many gastrointestinal-related disorders such as inflammatory bowel disease IBD, necrotizing enterocolitis, and metabolic syndrome and that exogenous IAP supplementation improves the outcomes associated with these disorders. Additionally, studies using transgenic IAP-knock out (IAP-KO) mouse models further support the importance of the defensive role of IAP in the intestine. Supplementation of exogenous IAP and cellular overexpression of IAP have also been used in vitro to dissect out the downstream mechanisms of this protein in mammalian cell lines. Some of the innate immune functions of IAP include lipopolysaccharide (LPS) detoxification, protection of gut barrier integrity, regulation of gut microbial communities and its anti-inflammatory roles. A novel function of IAP recently identified is the induction of autophagy. Due to its critical role in the gut physiology and its excellent safety profile, IAP has been used in phase 2a clinical trials for treating conditions such as sepsis-associated acute kidney injury. Many excellent reviews discuss the role of IAP in physiology and pathophysiology and here we extend these to include recent updates on this important host defense protein and discuss its role in innate immunity via its effects on bacteria as well as on host cells. We will also discuss the relationship between IAP and autophagy and how these two pathways may act in concert to protect the gut.<\/jats:p>","DOI":"10.3390\/biom11121784","type":"journal-article","created":{"date-parts":[[2021,11,29]],"date-time":"2021-11-29T22:50:45Z","timestamp":1638226245000},"page":"1784","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":53,"title":["Role of Intestinal Alkaline Phosphatase in Innate Immunity"],"prefix":"10.3390","volume":"11","author":[{"given":"Sudha B.","family":"Singh","sequence":"first","affiliation":[{"name":"Biomedical Research Institute of New Mexico, Albuquerque, NM 87108, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Henry C.","family":"Lin","sequence":"additional","affiliation":[{"name":"Medicine Service, New Mexico VA Health Care System, Albuquerque, NM 87108, USA"},{"name":"Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of New Mexico, Albuquerque, NM 87131, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,11,29]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"e8483","DOI":"10.15252\/emmm.201708483","article-title":"Human ALPI deficiency causes inflammatory bowel disease and highlights a key mechanism of gut homeostasis","volume":"10","author":"Parlato","year":"2018","journal-title":"EMBO Mol. 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