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They harbor chemosensory receptors and signal to the mucosal immune system in response to external stimuli, though their full function and structure remain unclear. Named for their apical \u201ctuft\u201d of long actin-rich microvilli, tuft cells facilitate chemoreception and other physiological responses. In enterocytes, microvilli are stabilized by intermicrovillar adhesion complexes (IMACs) composed of several proteins, including cadherin-related family member-2 (CDHR2) and cadherin-related family member-5 (CDHR5), Myosin 7b, and Usher syndrome type 1 C (USH1C). We hypothesized that IMACs would be enriched in tuft cells to regulate microvillar organization. Immunostaining of murine intestinal tissue revealed that CDHR2 and CDHR5 colocalize with the tuft cell markers, DCLK1, phospho-EGFR, advillin, and cytokeratin 18. CDHR2 was dispersed throughout murine tuft cells, while CDHR5 was concentrated on the apical surface. USH1C and Myosin 7b were present in tuft cells, but at lower levels. Human single-cell RNA sequencing revealed robust CDHR2 and CDHR5 expression in tuft cells in the small intestine and colon. Immunostaining of human intestinal tissue confirmed CDHR2 and CDHR5 localization to the apical surface of tuft cells. Our findings demonstrate that protocadherins are key components of murine and human intestinal tuft cells.<\/jats:p>","DOI":"10.1369\/00221554241287267","type":"journal-article","created":{"date-parts":[[2024,10,4]],"date-time":"2024-10-04T10:51:35Z","timestamp":1728039095000},"page":"611-622","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":2,"title":["Intestinal Tuft Cells Are Enriched With Protocadherins"],"prefix":"10.1369","volume":"72","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1487-1715","authenticated-orcid":false,"given":"Rachel","family":"Stubler","sequence":"first","affiliation":[{"name":"Department of Regenerative Medicine & Cell Biology, Medical University of South Carolina, Charleston, SC"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7229-0148","authenticated-orcid":false,"given":"Sarah 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