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Int J Mol Sci. 2019 Mar 7;20(5). pii: E1169. doi: 10.3390/ijms20051169.

Inhibitory Effects of Menadione on Helicobacter pylori Growth and Helicobacter pylori-Induced Inflammation via NF-κB Inhibition.

Author information

1
Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University, Wonju 26493, Korea. lmh77777@naver.com.
2
Forensic DNA Division, National Forensic Service, Wonju 26460, Korea. lmh77777@naver.com.
3
Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University, Wonju 26493, Korea. clever1088@nate.com.
4
Forensic DNA Division, National Forensic Service, Wonju 26460, Korea. yoonjungs@korea.kr.
5
Department of Clinical Laboratory Science, College of Medical Sciences, Daegu Haany University, Gyeongsan 38610, Korea. taesube@nate.com.
6
Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University, Wonju 26493, Korea. haejin5462@naver.com.
7
Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University, Wonju 26493, Korea. rlaehgus00@naver.com.
8
Department of Biomedical Laboratory Science, Daekyeung University, Gyeongsan 38547, Korea. pm@tk.ac.kr.
9
Department of Clinical Laboratory Science, Semyung University, Jecheon 27136, Korea. moonc72@naver.com.
10
Natural Products Research Center, Korea Institute of Science and Technology (KIST) Gangneung 25451, Korea. mkkk01@naver.com.
11
Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University, Wonju 26493, Korea. amaranth1001@nate.com.
12
National Institute of Crop Science (NICS), Rural Development Administration (RDA), Wanju-Gun 55365, Korea. swd@rda.go.kr.
13
Department of Clinical Laboratory Science, Semyung University, Jecheon 27136, Korea. science4us@semyung.ac.kr.
14
Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University, Wonju 26493, Korea. kimjb70@yonsei.ac.kr.

Abstract

H. pylori is classified as a group I carcinogen by WHO because of its involvement in gastric cancer development. Several reports have suggested anti-bacterial effects of menadione, although the effect of menadione on major virulence factors of H. pylori and H. pylori-induced inflammation is yet to be elucidated. In this study, therefore, we demonstrated that menadione has anti-H. pylori and anti-inflammatory effects. Menadione inhibited growth of H. pylori reference strains and clinical isolates. Menadione reduced expression of vacA in H. pylori, and translocation of VacA protein into AGS (gastric adenocarcinoma cell) was also decreased by menadione treatment. This result was concordant with decreased apoptosis in AGS cells infected with H. pylori. Moreover, cytotoxin-associated protein A (CagA) translocation into H. pylori-infected AGS cells was also decreased by menadione. Menadione inhibited expression of several type IV secretion system (T4SS) components, including virB2, virB7, virB8, and virB10, that are responsible for translocation of CagA into host cells. In particular, menadione inhibited nuclear factor kappa-light-chain-enhancer of activated B cell (NF-κB) activation and thereby reduced expression of the proinflammatory cytokines such as IL-1β, IL-6, IL-8, and TNF-α in AGS as well as in THP-1 (monocytic leukemia cell) cell lines. Collectively, these results suggest the anti-bacterial and anti-inflammatory effects of menadione against H. pylori.

KEYWORDS:

CagA; H. pylori; IL-8; NF-κB; T4SS; VacA; inflammation; menadione

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