Expression of ssrA in non-pathogen-induced adaptation in the oral cavity through signal exchange with oral pathogens
Kim Sung-Ryoul, 곽재우, 이성가, 정승곤, 한만승, 김방신, 국민석, 오희균, 박홍주,
소속 상세정보
( Kim Sung-Ryoul ) - Chonnam National University School of Dentistry Department of Oral and Maxillofacial Surgery
곽재우 ( Kwak Jae-Woo ) - Chonnam National University School of Dentistry Department of Oral and Maxillofacial Surgery
이성가 ( Lee Sung-Ka ) - Chonnam National University School of Dentistry Department of Oral and Maxillofacial Surgery
정승곤 ( Jung Seung-Gon ) - Chonnam National University School of Dentistry Department of Oral and Maxillofacial Surgery
한만승 ( Han Man-Seung ) - Chonnam National University School of Dentistry Department of Oral and Maxillofacial Surgery
김방신 ( Kim Bang-Sin ) - Chonnam National University School of Dentistry Department of Oral and Maxillofacial Surgery
국민석 ( Kook Min-Suk ) - Chonnam National University School of Dentistry Department of Oral and Maxillofacial Surgery
오희균 ( Oh Hee-Kyun ) - Chonnam National University School of Dentistry Department of Oral and Maxillofacial Surgery
박홍주 ( Park Hong-Ju ) - Chonnam National University School of Dentistry Department of Oral and Maxillofacial Surgery
KMID : 0355620120380010014
Abstract
Introduction: This study was conducted to evaluate ssrA expression resulting from adaptation of Escherichia coli (E. coli ) to oral pathogens through signal exchange. Materials and Methods: Human cell lines Hep2 and HT29, wild-type E. coli (WT K-12), ssrA knock-out E. coli (Δ K-12), and Scleropages aureus (S. aureus ) were used. A single culture consisting of Hep2, HT29, WT K-12, and Δ K-12, and mixed cultures consisting of Hep2 and WT K-12, Hep2 and Δ K-12, WT K-12 and S. aureus , Δ K-12 and S. aureus , and Hep2, WT K-12, and S. aureus were prepared. For HT29, a mixed culture was prepared with WT K-12 and with WT K-12 and S. aureus . Total RNA was extracted from each culture with the resulting expression of ssrA, nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB), and p53 was evaluated by Reverse transcription polymerase chain reaction (RT-PCR). Results: The expression of ssrA in a single culture of WT K-12 was lower than that observed in the mixed culture of WT K-12 with S. aureus . Greater ssrA expression was observed in the mixed culture of WT K-12 with Hep2 than in the single culture of WT K-12. The expression of NF-κB was higher in the mixed culture of Hep2 with Δ K-12 than that in the mixed culture of Hep2 with WT K-12, and was lowest in the single culture of Hep2. The expression of ssrA was higher in the mixed culture of WT K-12 with Hep2 and S. aureus than in the mixed culture of WT K-12 with Hep2. Conclusion: These results suggest that ssrA plays an important role in the mechanism of E. coli adaptation to a new environment.
키워드
ssrA; Escherichia coli; Adaptation
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