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Flavonoid Glycosides Inhibit Sortase A and Sortase A-Mediated Aggregation of Streptococcus mutans, an Oral Bacterium Responsible for Human Dental Caries

  • Yang, Woo-Young (Department of Agricultural Biotechnology, College of Agriculture and Life Sciences, Seoul National University) ;
  • Kim, Chang-Kwon (Natural Products Research Institute, College of Pharmacy, Seoul National University) ;
  • Ahn, Chan-Hong (Department of Agricultural Biotechnology, College of Agriculture and Life Sciences, Seoul National University) ;
  • Kim, Heegyu (Department of Agricultural Biotechnology, College of Agriculture and Life Sciences, Seoul National University) ;
  • Shin, Jongheon (Natural Products Research Institute, College of Pharmacy, Seoul National University) ;
  • Oh, Ki-Bong (Department of Agricultural Biotechnology, College of Agriculture and Life Sciences, Seoul National University)
  • Received : 2016.05.04
  • Accepted : 2016.06.10
  • Published : 2016.09.28

Abstract

Three flavonoids were isolated from dried flowers of Sophora japonica using repetitive column chromatography and high-performance liquid chromatography. The flavonoids were identified as rutin (1), quercetin-3'-O-methyl-3-O-α-ʟ-rhamnopyranosyl(1 → 6)-β-ᴅ-glucopyranoside (2), and quercetin (3) on the basis of spectroscopic analysis and comparison of values reported in the literature. These compounds inhibited the action of sortase A (SrtA) from Streptococcus mutans, a primary etiologic agent of human dental caries. The onset and magnitude of inhibition of saliva-induced aggregation of S. mutans treated with compound 1 was comparable to that of untreated S. mutans with a deletion of the srtA gene.

Keywords

References

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