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Here, we integrate patient-derived three-dimensional cervical organoids, single-cell transcriptomics, and native tissue analysis to construct a high-resolution atlas of epithelial cell diversity and immune dynamics during\n            <jats:italic toggle=\"yes\">Chlamydia trachomatis<\/jats:italic>\n            infection. We demonstrate that cervical organoids closely resemble native tissue at transcriptional and cellular levels, identifying epithelial subtypes with region-specific immune specializations. Upon infection, ectocervical epithelia reinforce barrier integrity, whereas endocervical epithelia, particularly uninfected bystander cells, exhibit extensive transcriptional reprogramming characterized by robust interferon activation, antigen presentation, and antimicrobial defense. Infection profoundly reshapes epithelial intercellular communication, positioning bystander cells as major contributors to signaling networks coordinating immune responses and tissue regeneration. Our findings highlight a sophisticated epithelial-intrinsic immune network critical for cervical mucosal defense and establish a physiologically relevant platform for studying host-pathogen interactions and guiding targeted mucosal therapies against reproductive tract infections and pathologies.\n          <\/jats:p>","DOI":"10.1126\/sciadv.ady1640","type":"journal-article","created":{"date-parts":[[2025,10,3]],"date-time":"2025-10-03T17:59:16Z","timestamp":1759514356000},"update-policy":"https:\/\/doi.org\/10.34133\/aaas_crossmark","source":"Crossref","is-referenced-by-count":9,"title":["Single-cell atlas of cervical organoids uncovers epithelial immune heterogeneity and intercellular cross-talk during Chlamydia infection"],"prefix":"10.1126","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1754-6555","authenticated-orcid":true,"given":"Pon Ganish","family":"Prakash","sequence":"first","affiliation":[{"name":"Department of Microbiology, University of W\u00fcrzburg, 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