{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T19:01:39Z","timestamp":1787079699959,"version":"build-2736575974"},"reference-count":49,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2021,10,29]],"date-time":"2021-10-29T00:00:00Z","timestamp":1635465600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000024","name":"Canadian Institutes of Health Research","doi-asserted-by":"publisher","award":["PJT-166163"],"award-info":[{"award-number":["PJT-166163"]}],"id":[{"id":"10.13039\/501100000024","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cells"],"abstract":"<jats:p>FoxL1+-Telocytes (TCFoxL1+) are subepithelial cells that form a network underneath the epithelium. We have shown that without inflammatory stress, mice with loss of function in the BMP signalling pathway in TCFoxL1+ (BmpR1a\u0394FoxL1+) initiated colonic neoplasia. Although TCFoxL1+ are modulated in IBD patients, their specific role in this pathogenesis remains unclear. Thus, we investigated how the loss of BMP signalling in TCFoxL1+ influences the severity of inflammation and fosters epithelial recovery after inflammatory stress. BmpR1a was genetically ablated in mouse colonic TCFoxL1+. Experimental colitis was performed using a DSS challenge followed by recovery steps to assess wound healing. Physical barrier properties, including mucus composition and glycosylation, were assessed by alcian blue staining, immunofluorescences and RT-qPCR. We found that BmpR1a\u0394FoxL1+ mice had impaired mucus quality, and upon exposure to inflammatory challenges, they had increased susceptibility to experimental colitis and delayed healing. In addition, defective BMP signalling in TCFoxL1+ altered the functionality of goblet cells, thereby affecting mucosal structure and promoting bacterial invasion. Following inflammatory stress, TCFoxL1+ with impaired BMP signalling lose their homing signal for optimal distribution along the epithelium, which is critical in tissue regeneration after injury. Overall, our findings revealed key roles of BMP signalling in TCFoxL1+ in IBD pathogenesis.<\/jats:p>","DOI":"10.3390\/cells10112954","type":"journal-article","created":{"date-parts":[[2021,11,1]],"date-time":"2021-11-01T22:21:08Z","timestamp":1635805268000},"page":"2954","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Altered Mucus Barrier Integrity and Increased Susceptibility to Colitis in Mice upon Loss of Telocyte Bone Morphogenetic Protein Signalling"],"prefix":"10.3390","volume":"10","author":[{"given":"Vilcy","family":"Reyes Nicol\u00e1s","sequence":"first","affiliation":[{"name":"D\u00e9partement d\u2019Immunologie et Biologie Cellulaire, Facult\u00e9 de M\u00e9decine et des Sciences de la Sant\u00e9, Universit\u00e9 de Sherbrooke, Sherbrooke, QC J1E 4K8, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joannie M.","family":"Allaire","sequence":"additional","affiliation":[{"name":"D\u00e9partement d\u2019Immunologie et Biologie Cellulaire, Facult\u00e9 de M\u00e9decine et des Sciences de la Sant\u00e9, Universit\u00e9 de Sherbrooke, Sherbrooke, QC J1E 4K8, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3540-5270","authenticated-orcid":false,"given":"Alain B.","family":"Alfonso","sequence":"additional","affiliation":[{"name":"D\u00e9partement d\u2019Immunologie et Biologie Cellulaire, Facult\u00e9 de M\u00e9decine et des Sciences de la Sant\u00e9, Universit\u00e9 de Sherbrooke, Sherbrooke, QC J1E 4K8, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dianne","family":"Pupo G\u00f3mez","sequence":"additional","affiliation":[{"name":"D\u00e9partement d\u2019Immunologie et Biologie Cellulaire, Facult\u00e9 de M\u00e9decine et des Sciences de la Sant\u00e9, Universit\u00e9 de Sherbrooke, Sherbrooke, QC J1E 4K8, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"V\u00e9ronique","family":"Pomerleau","sequence":"additional","affiliation":[{"name":"D\u00e9partement d\u2019Immunologie et Biologie Cellulaire, Facult\u00e9 de M\u00e9decine et des Sciences de la Sant\u00e9, Universit\u00e9 de Sherbrooke, Sherbrooke, QC J1E 4K8, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"V\u00e9ronique","family":"Giroux","sequence":"additional","affiliation":[{"name":"D\u00e9partement d\u2019Immunologie et Biologie Cellulaire, Facult\u00e9 de M\u00e9decine et des Sciences de la Sant\u00e9, Universit\u00e9 de Sherbrooke, Sherbrooke, QC J1E 4K8, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fran\u00e7ois","family":"Boudreau","sequence":"additional","affiliation":[{"name":"D\u00e9partement d\u2019Immunologie et Biologie Cellulaire, Facult\u00e9 de M\u00e9decine et des Sciences de la Sant\u00e9, Universit\u00e9 de Sherbrooke, Sherbrooke, QC J1E 4K8, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0810-0511","authenticated-orcid":false,"given":"Nathalie","family":"Perreault","sequence":"additional","affiliation":[{"name":"D\u00e9partement d\u2019Immunologie et Biologie Cellulaire, Facult\u00e9 de M\u00e9decine et des Sciences de la Sant\u00e9, Universit\u00e9 de Sherbrooke, Sherbrooke, QC J1E 4K8, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,10,29]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"427","DOI":"10.1038\/nature06005","article-title":"Unravelling the pathogenesis of inflammatory bowel disease","volume":"448","author":"Xavier","year":"2007","journal-title":"Nature"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"G586","DOI":"10.1152\/ajpgi.00041.2010","article-title":"Loss of Smad5 leads to the disassembly of the apical junctional complex and increased susceptibility to experimental colitis","volume":"300","author":"Allaire","year":"2011","journal-title":"Am. 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