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Fibroblasts are heterogeneous, but inconsistent nomenclature and lack of markers have hindered their classification. Using single-cell RNA sequencing (scRNA-seq), we identified six distinct fibroblast subpopulations in mouse colonic mucosa, each with unique molecular profiles and specialized functions. Some fibroblasts focus on ECM production and remodeling, whereas others show high contractility. Certain subsets of the fibroblasts secrete cytokines promoting epithelial differentiation or stem cell niche maintenance. Spatial mapping revealed their organization within the mucosa, and trajectory analysis suggested distinct differentiation pathways. Cell cycle scoring confirmed that fibroblasts remain largely non-proliferative under homeostasis. By integrating our dataset with published ones, we identify conserved fibroblast populations and propose a standardized nomenclature for intestinal fibroblasts. This framework enhances communication and understanding of fibroblast diversity and their roles in gut homeostasis and disease.<\/jats:p>","DOI":"10.1242\/jcs.264147","type":"journal-article","created":{"date-parts":[[2025,10,31]],"date-time":"2025-10-31T11:00:11Z","timestamp":1761908411000},"source":"Crossref","is-referenced-by-count":2,"title":["Intestinal fibroblast heterogeneity \u2013 unifying RNA-seq studies and introducing consensus-driven nomenclature"],"prefix":"10.1242","volume":"138","author":[{"given":"Neda","family":"Glisovic","sequence":"first","affiliation":[{"name":"Institut Curie, PSL Research University, CNRS UMR 144 1 , F-75005 Paris ,","place":["France"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6801-7031","authenticated-orcid":false,"given":"Aleksandra S.","family":"Chikina","sequence":"additional","affiliation":[{"name":"Institut Curie, PSL Research University, CNRS UMR 144 1 , F-75005 Paris ,","place":["France"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"No\u00e9mie","family":"Robil","sequence":"additional","affiliation":[{"name":"Paris Biotech Sant\u00e9 2 GenoSplice Technology , , 75014 Paris ,","place":["France"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sonia","family":"Lameiras","sequence":"additional","affiliation":[{"name":"PSL University, Institut Curie Research Center, Institut Curie Genomics of Excellence Platform 3 , 75005 Paris ,","place":["France"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Reda","family":"Bouras","sequence":"additional","affiliation":[{"name":"Institut Curie, PSL Research University, CNRS UMR 144 1 , F-75005 Paris ,","place":["France"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4250-703X","authenticated-orcid":false,"given":"Danijela","family":"Matic Vignjevic","sequence":"additional","affiliation":[{"name":"Institut Curie, PSL Research University, CNRS UMR 144 1 , F-75005 Paris ,","place":["France"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"237","published-online":{"date-parts":[[2025,12,15]]},"reference":[{"key":"2025121504110319500_JCS264147C1","doi-asserted-by":"publisher","first-page":"1083","DOI":"10.1038\/nmeth.4463","article-title":"SCENIC: single-cell regulatory network inference and clustering","volume":"14","author":"Aibar","year":"2017","journal-title":"Nat. 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