{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,3]],"date-time":"2026-09-03T15:09:09Z","timestamp":1788448149507,"version":"build-2803163510"},"reference-count":51,"publisher":"MDPI AG","issue":"16","license":[{"start":{"date-parts":[[2022,8,20]],"date-time":"2022-08-20T00:00:00Z","timestamp":1660953600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"JSPS KAKENHI","award":["JP19K17711"],"award-info":[{"award-number":["JP19K17711"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>Uromodulin, a urinary protein synthesized and secreted from the thick ascending limb (TAL) of the loop of Henle, is associated with hypertension through the activation of sodium reabsorption in the TAL. Uromodulin is a potential target for hypertension treatment via natriuresis. However, its biological function in epithelial cells of the distal nephron segment, particularly the collecting duct, remains unknown. Herein, we examined the regulation of uromodulin production during water deprivation in vivo as well as the effect of uromodulin on the activity of the water channel aquaporin\u22122 (AQP2) in vitro and in vivo using transgenic mice. Water deprivation upregulated uromodulin production; immunofluorescence experiments revealed uromodulin adhesion on the apical surface of the collecting duct. Furthermore, the activation of AQP2 was attenuated in mice lacking uromodulin. Uromodulin enhanced the phosphorylation and apical trafficking of AQP2 in mouse collecting duct cells treated with the vasopressin analog dDAVP. The uromodulin-induced apical trafficking of AQP2 was attenuated via endocytosis inhibitor treatment, suggesting that uromodulin activates AQP2 through the suppression of endocytosis. This study provides novel insights into the cross\u2212talk between TAL and the collecting duct, and indicates that the modulation of uromodulin is a promising approach for diuresis and hypertension treatment.<\/jats:p>","DOI":"10.3390\/ijms23169410","type":"journal-article","created":{"date-parts":[[2022,8,21]],"date-time":"2022-08-21T22:23:13Z","timestamp":1661120593000},"page":"9410","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Uromodulin Regulates Murine Aquaporin\u22122 Activity via Thick Ascending Limb\u2013Collecting Duct Cross\u2212Talk during Water Deprivation"],"prefix":"10.3390","volume":"23","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2959-6015","authenticated-orcid":false,"given":"Tomoaki","family":"Takata","sequence":"first","affiliation":[{"name":"Division of Gastroenterology and Nephrology, Faculty of Medicine, Tottori University, Yonago 683-8504, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shintaro","family":"Hamada","sequence":"additional","affiliation":[{"name":"Division of Gastroenterology and Nephrology, Faculty of Medicine, Tottori University, Yonago 683-8504, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yukari","family":"Mae","sequence":"additional","affiliation":[{"name":"Division of Gastroenterology and Nephrology, Faculty of Medicine, Tottori University, Yonago 683-8504, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takuji","family":"Iyama","sequence":"additional","affiliation":[{"name":"Division of Gastroenterology and Nephrology, Faculty of Medicine, Tottori University, Yonago 683-8504, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ryohei","family":"Ogihara","sequence":"additional","affiliation":[{"name":"Division of Gastroenterology and Nephrology, Faculty of Medicine, Tottori University, Yonago 683-8504, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Misako","family":"Seno","sequence":"additional","affiliation":[{"name":"Advanced Medicine & Translational Research Center, Organization for Research Initiative and Promotion, Tottori University, Yonago 683-8504, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kazuomi","family":"Nakamura","sequence":"additional","affiliation":[{"name":"Advanced Medicine, Innovation and Clinical Research Center, Tottori University Hospital, Yonago 683-8504, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Miki","family":"Takata","sequence":"additional","affiliation":[{"name":"Division of Respiratory Medicine and Rheumatology, Faculty of Medicine, Tottori University, Yonago 683-8504, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0522-1884","authenticated-orcid":false,"given":"Takaaki","family":"Sugihara","sequence":"additional","affiliation":[{"name":"Division of Gastroenterology and Nephrology, Faculty of Medicine, Tottori University, Yonago 683-8504, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hajime","family":"Isomoto","sequence":"additional","affiliation":[{"name":"Division of Gastroenterology and Nephrology, Faculty of Medicine, Tottori University, Yonago 683-8504, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,8,20]]},"reference":[{"key":"ref_1","first-page":"326","article-title":"Urine concentration and dilution","volume":"Volume 1","author":"Taal","year":"2012","journal-title":"Brenner and Rector\u2019s the Kidney"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"454","DOI":"10.1038\/ki.1982.198","article-title":"Thick ascending limb of Henle\u2019s loop","volume":"22","author":"Burg","year":"1982","journal-title":"Kidney Int."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"811","DOI":"10.1161\/HYPERTENSIONAHA.105.063636","article-title":"Kidney in hypertension: Guyton redux","volume":"51","author":"Coffman","year":"2008","journal-title":"Hypertension"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"545","DOI":"10.1016\/S0092-8674(01)00241-0","article-title":"Molecular mechanisms of human hypertension","volume":"104","author":"Lifton","year":"2001","journal-title":"Cell"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"83","DOI":"10.1126\/science.3453112","article-title":"Identification of Human Uromodulin as the Tamm-Horsfall Urinary Glycoprotein","volume":"236","author":"Pennica","year":"1987","journal-title":"Science"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"882","DOI":"10.1136\/jmg.39.12.882","article-title":"Mutations of the UMOD gene are responsible for medullary cystic kidney disease 2 and familial juvenile hyperuricaemic nephropathy","volume":"39","author":"Hart","year":"2002","journal-title":"J. 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