Curcumin inhibits growth of Porphyromonas gingivalis by arrest of bacterial dipeptidyl peptidase activity

Background Curcumin is a multi-functional polyphenol with anti-bacterial and anti-inflammatory effects and may have potential for treatment of periodontal diseases. The present study was conducted to examine the molecular basis of the anti-bacterial effect of curcumin against Porphyromonas gingivali...

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Main Authors: Hiroki Murai, Masae Kuboniwa, Miho Kakiuchi, Reiko Matsumura, Yoshihiko Hirata, Atsuo Amano
Format: Article
Language:English
Published: Taylor & Francis Group 2024-12-01
Series:Journal of Oral Microbiology
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Online Access:https://www.tandfonline.com/doi/10.1080/20002297.2024.2373040
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author Hiroki Murai
Masae Kuboniwa
Miho Kakiuchi
Reiko Matsumura
Yoshihiko Hirata
Atsuo Amano
author_facet Hiroki Murai
Masae Kuboniwa
Miho Kakiuchi
Reiko Matsumura
Yoshihiko Hirata
Atsuo Amano
author_sort Hiroki Murai
collection DOAJ
description Background Curcumin is a multi-functional polyphenol with anti-bacterial and anti-inflammatory effects and may have potential for treatment of periodontal diseases. The present study was conducted to examine the molecular basis of the anti-bacterial effect of curcumin against Porphyromonas gingivalis using metabolome analysis.Materials and Methods P. gingivalis were incubated with 10 µg/mL curcumin, and then metabolites were analyzed with CE-TOF/MS. Expression levels of sigma factors were also evaluated using RT-PCR assays. The activities of dipeptidyl peptidases (DPPs) were assessed by examining the degradation reactions of MCA-labeled peptides.Results The relative amounts of various glycogenic amino acids were significantly decreased when P. gingivalis was incubated with curcumin. Furthermore, the metabolites on the amino acid degradation pathway, including high-energy compounds such as ATP, various intermediate metabolites of RNA/DNA synthesis, nucleoside sugars and amino sugars were also decreased. Additionally, the expression levels of sigma-54 and sigma-70 were significantly decreased, and the same results as noted following nutrient starvation. Curcumin also significantly suppressed the activities of some DPPs, while the human DPP-4 inhibitors markedly inhibited the growth of P. gingivalis and activities of the DPPs.Conclusions Curcumin suppresses the growth of P. gingivalis by inhibiting DPPs and also interferes with nucleic acid synthesis and central metabolic pathways, beginning with amino acid metabolism.
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spelling doaj-art-75a64b5a5eb94894a613223be91f40c22024-11-26T06:52:11ZengTaylor & Francis GroupJournal of Oral Microbiology2000-22972024-12-0116110.1080/20002297.2024.2373040Curcumin inhibits growth of Porphyromonas gingivalis by arrest of bacterial dipeptidyl peptidase activityHiroki Murai0Masae Kuboniwa1Miho Kakiuchi2Reiko Matsumura3Yoshihiko Hirata4Atsuo Amano5Joint Research Laboratory for Advanced Oral Environmental Science (SARAYA), Osaka University Graduate School of Dentistry, Osaka, Suita, JapanJoint Research Laboratory for Advanced Oral Environmental Science (SARAYA), Osaka University Graduate School of Dentistry, Osaka, Suita, JapanJoint Research Laboratory for Advanced Oral Environmental Science (SARAYA), Osaka University Graduate School of Dentistry, Osaka, Suita, JapanJoint Research Laboratory for Advanced Oral Environmental Science (SARAYA), Osaka University Graduate School of Dentistry, Osaka, Suita, JapanJoint Research Laboratory for Advanced Oral Environmental Science (SARAYA), Osaka University Graduate School of Dentistry, Osaka, Suita, JapanJoint Research Laboratory for Advanced Oral Environmental Science (SARAYA), Osaka University Graduate School of Dentistry, Osaka, Suita, JapanBackground Curcumin is a multi-functional polyphenol with anti-bacterial and anti-inflammatory effects and may have potential for treatment of periodontal diseases. The present study was conducted to examine the molecular basis of the anti-bacterial effect of curcumin against Porphyromonas gingivalis using metabolome analysis.Materials and Methods P. gingivalis were incubated with 10 µg/mL curcumin, and then metabolites were analyzed with CE-TOF/MS. Expression levels of sigma factors were also evaluated using RT-PCR assays. The activities of dipeptidyl peptidases (DPPs) were assessed by examining the degradation reactions of MCA-labeled peptides.Results The relative amounts of various glycogenic amino acids were significantly decreased when P. gingivalis was incubated with curcumin. Furthermore, the metabolites on the amino acid degradation pathway, including high-energy compounds such as ATP, various intermediate metabolites of RNA/DNA synthesis, nucleoside sugars and amino sugars were also decreased. Additionally, the expression levels of sigma-54 and sigma-70 were significantly decreased, and the same results as noted following nutrient starvation. Curcumin also significantly suppressed the activities of some DPPs, while the human DPP-4 inhibitors markedly inhibited the growth of P. gingivalis and activities of the DPPs.Conclusions Curcumin suppresses the growth of P. gingivalis by inhibiting DPPs and also interferes with nucleic acid synthesis and central metabolic pathways, beginning with amino acid metabolism.https://www.tandfonline.com/doi/10.1080/20002297.2024.2373040Anti-bacterial agentpolyphenolcurcuminporphyromonas gingivalismetabolome analysisdipeptidyl peptidase
spellingShingle Hiroki Murai
Masae Kuboniwa
Miho Kakiuchi
Reiko Matsumura
Yoshihiko Hirata
Atsuo Amano
Curcumin inhibits growth of Porphyromonas gingivalis by arrest of bacterial dipeptidyl peptidase activity
Journal of Oral Microbiology
Anti-bacterial agent
polyphenol
curcumin
porphyromonas gingivalis
metabolome analysis
dipeptidyl peptidase
title Curcumin inhibits growth of Porphyromonas gingivalis by arrest of bacterial dipeptidyl peptidase activity
title_full Curcumin inhibits growth of Porphyromonas gingivalis by arrest of bacterial dipeptidyl peptidase activity
title_fullStr Curcumin inhibits growth of Porphyromonas gingivalis by arrest of bacterial dipeptidyl peptidase activity
title_full_unstemmed Curcumin inhibits growth of Porphyromonas gingivalis by arrest of bacterial dipeptidyl peptidase activity
title_short Curcumin inhibits growth of Porphyromonas gingivalis by arrest of bacterial dipeptidyl peptidase activity
title_sort curcumin inhibits growth of porphyromonas gingivalis by arrest of bacterial dipeptidyl peptidase activity
topic Anti-bacterial agent
polyphenol
curcumin
porphyromonas gingivalis
metabolome analysis
dipeptidyl peptidase
url https://www.tandfonline.com/doi/10.1080/20002297.2024.2373040
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