{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T14:18:49Z","timestamp":1790864329455,"version":"4.1.0"},"reference-count":40,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2025,3,27]],"date-time":"2025-03-27T00:00:00Z","timestamp":1743033600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Microbiol."],"abstract":"<jats:p>Dental caries is a biofilm-related chronic infectious disease. <jats:italic>Streptococcus mutans<\/jats:italic> is the core microorganism that leads to caries, with its capacity to form biofilms via glucosyltransferases (Gtfs) being the predominant virulence factor contributing to this condition. Therefore, researching novel drugs targeting Gtf is important for treating dental caries. Our study established a rapid detection method for Gtf activity to screen over 1,000 compounds from the Selleck Natural Product Library. We identified tannic acid (TA) as a potential inhibitor of Gtf activity. <jats:italic>In vitro<\/jats:italic> experiments suggested that TA could inhibit extracellular polysaccharide (EPS) synthesis and biofilm formation in <jats:italic>S. mutans<\/jats:italic> by selectively antagonizing Gtf rather than directly killing the bacteria. Molecular docking experiments confirmed a strong binding affinity between TA and Gtf. In summary, TA exhibits good anti-virulence performance against <jats:italic>S. mutans<\/jats:italic>, indicating its potential value in anti-biofilm and anti-caries applications.<\/jats:p>","DOI":"10.3389\/fmicb.2025.1555497","type":"journal-article","created":{"date-parts":[[2025,3,28]],"date-time":"2025-03-28T02:55:07Z","timestamp":1743130507000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":7,"title":["Glucosyltransferase activity-based screening identifies tannic acid as an inhibitor of Streptococcus mutans biofilm"],"prefix":"10.3389","volume":"16","author":[{"given":"Mai","family":"Xu","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xinyan","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tao","family":"Gong","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ziyi","family":"Yang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dian","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qizhao","family":"Ma","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuqing","family":"Li","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2025,3,27]]},"reference":[{"key":"ref1","doi-asserted-by":"publisher","first-page":"4259","DOI":"10.1128\/IAI.00422-08","article-title":"Characteristics of biofilm formation by Streptococcus mutans in the presence of saliva","volume":"76","author":"Ahn","year":"2008","journal-title":"Infect. 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