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Anti-inflammatory effects of fish bone fermented using Monascus purpureus in LPS-induced RAW264.7 cells by regulating NF-κB pathway

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Abstract

Fish bones are the by-products of aquatic and fishery processing, which are often discarded. However, it has been considered having health-promoting by containing many essential nutrients. This study investigates the anti-inflammatory effect of fish bone fermented by Monascus purpureus (FBF) and the NF-κB pathway regulation mechanism in lipopolysaccharides (LPS)-induced RAW 264.7 cells. FBF has inhibited the production of PGE2 (prostaglandin E2), interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) in LPS-induced RAW264.7 cells. The FBF has significantly inhibited mRNA expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2). Moreover, FBF has suppressed activation of NF-κB (nuclear factor kappa-B) by increasing IκB mRNA expression and reduced of p65, p50 mRNA expression, as well as nuclear NF-κB DNA binding activity in LPS-induced RAW 246.7 cells. These findings demonstrate that FBF has inhibited LPS-induced inflammation by subsiding the activation of NF-κB in RAW 246.7 cells, implying that FBF could be employed as a promising natural product.

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Abbreviations

LPS:

Lipopolysaccharides

iNOS:

Inducible nitric oxide synthase

PGE2 :

Prostaglandin E2

COX-2:

Cyclooxygenase-2

IL-6:

Interleukin-6

TNF-α:

Tumor necrosis factor-α

NF-κB:

Nuclear factor kappa-B

DMEM:

Dulbecco’s Modified Eagle Medium

PBS:

Phosphate-buffered saline

MTT:

3-(4,5-Dimethyazol-2-yl)-2,5-diphenyltetrazolium bromide

Real-time PCR:

Real-time reverse transcriptase polymerase chain reaction

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Acknowledgements

The authors are grateful to appreciate the invaluable support of the Ministry of Science and Technology of Taiwan in this study

Funding

This study was funded with the support of the Ministry of Science and Technology of Taiwan (grant number MOST 109-2622-E-992-028-).

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Contributions

Conceptualization, Y-TC and S-LH; methodology, Y-TC; validation, Y-TC and S-JC; formal analysis, L-JY; investigation, Y-TC, S-JC and C-YH; resources, L-JY; data curation, Y-TC and S-LH; writing—original draft preparation, Y-TC; writing—review and editing, S-LH and R-RS; supervision, C-DD and S-LH; project administration, S-LH All authors have read and agreed to the published version of the manuscript.

Corresponding author

Correspondence to Shu-Ling Hsieh.

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The authors declare that there are no conflicts of interest.

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Chen, YT., Chen, SJ., Yin, LJ. et al. Anti-inflammatory effects of fish bone fermented using Monascus purpureus in LPS-induced RAW264.7 cells by regulating NF-κB pathway. J Food Sci Technol 60, 958–965 (2023). https://doi.org/10.1007/s13197-022-05413-4

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  • DOI: https://doi.org/10.1007/s13197-022-05413-4

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