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Engineered probiotic organisms can enable dynamic production of therapeutic compounds in response to inflammatory biomarkers. However, delivery and localization of these engineered organisms to the site of inflammation requires their integration into a material or device that sustains their viability and metabolic activity. To this end, a 3D printed engineered living material (ELM) is developed using an engineered probiotic organism (\n                    <jats:italic>E. coli<\/jats:italic>\n                    Nissle 1917) with genetic circuits to sense biomarkers for inflammation and respond with the production of anti\u2010inflammatory compounds. These organisms are incorporated into poly(ethylene glycol) diacrylate (PEGDA) resins for the light\u2010based 3D printing of 3D constructs. The organisms are physically encapsulated within the PEGDA and are fully viable and metabolically active. The 3D printed ELM devices are able to detect clinically relevant amounts of nitric oxide as an inflammatory biomarker and respond with the production of tryptamine or 1\u2010acetyl\u20103\u2010carboxyl\u2010\u03b2\u2010carboline as representative anti\u2010inflammatory agents. Additionally, the ELM devices are efficacious in treating in vitro models of inflammation, including murine macrophages and intestinal epithelial cells. Looking forward, these ELM devices could serve as theranostic modalities for the long\u2010term treatment of inflammatory disorders such as IBD.\n                  <\/jats:p>","DOI":"10.1002\/adhm.202503809","type":"journal-article","created":{"date-parts":[[2025,9,27]],"date-time":"2025-09-27T06:43:44Z","timestamp":1758955424000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Theranostic Probiotic Engineered Living Materials That Dynamically Respond to Inflammation Markers"],"prefix":"10.1002","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9577-3257","authenticated-orcid":false,"given":"Gokce","family":"Altin\u2010Yavuzarslan","sequence":"first","affiliation":[{"name":"Molecular Engineering and Sciences Institute University of Washington 3946 W Stevens Wy NE Seattle WA 98195 USA"},{"name":"Department of Chemistry University of Washington 3790 Okanogan Lane Bagley Hall 036 Seattle WA 98195 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