Reducing Virulence and Biofilm of Pseudomonas aeruginosa by Potential Quorum Sensing Inhibitor Carotenoid: Zeaxanthin

Gokalsin B., Aksoydan B., Erman B., SESAL N. C.

MICROBIAL ECOLOGY, cilt.74, sa.2, ss.466-473, 2017 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 74 Sayı: 2
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1007/s00248-017-0949-3
  • Dergi Adı: MICROBIAL ECOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.466-473
  • Anahtar Kelimeler: Quorum sensing, Pseudomonas aeruginosa, Zeaxanthin, Biofilm, Molecular docking, SECONDARY METABOLITES, LICHENS, COMPOUND, MOLECULE, STRESS, AGENTS, GENES, LASR, FOOD
  • Marmara Üniversitesi Adresli: Evet

Özet

Pseudomonas aeruginosa can regulate its virulence gene expressions by using a signal system called quorum sensing. It is known that inhibition of quorum sensing can block biofilm formation and leave the bacteria defenseless. Therefore, it is necessary to determine natural sources to obtain potential quorum sensing inhibitors. This study aims to investigate an alternative treatment approach by utilizing the carotenoid zeaxanthin to reduce the expressions of P. aeruginosa virulence factors through quorum sensing inhibition. The inhibition potential of zeaxanthin was determined by in silico screening from a library of 638 lichen metabolites. Fluorescent monitor strains were utilized for quorum sensing inhibitor screens, and quantitative reverse-transcriptase PCR assay was performed for evaluating gene expression. Results indicate that zeaxanthin is a better inhibitor than the lichen secondary metabolite evernic acid, which was previously shown to be capable of inhibiting P. aeruginosa quorum sensing systems.