Diverse Krill Lipid Fractions Differentially Reduce LPS-Induced Inflammatory Markers in RAW264.7 Macrophages In Vitro

Antarctic krill oil is an emerging marine lipid and expected to be a potential functional food due to its diverse nutrients, such as eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), phospholipids, astaxanthin and tocopherols. Although krill oil has been previously proved to have anti-inflamm...

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Autores principales: Dan Xie, Fangyuan He, Xiaosan Wang, Xingguo Wang, Qingzhe Jin, Jun Jin
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Publicado: MDPI AG 2021
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Acceso en línea:https://doaj.org/article/59ddd7f2cc2f47e6861cc9366fcf9892
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spelling oai:doaj.org-article:59ddd7f2cc2f47e6861cc9366fcf98922021-11-25T17:36:57ZDiverse Krill Lipid Fractions Differentially Reduce LPS-Induced Inflammatory Markers in RAW264.7 Macrophages In Vitro10.3390/foods101128872304-8158https://doaj.org/article/59ddd7f2cc2f47e6861cc9366fcf98922021-11-01T00:00:00Zhttps://www.mdpi.com/2304-8158/10/11/2887https://doaj.org/toc/2304-8158Antarctic krill oil is an emerging marine lipid and expected to be a potential functional food due to its diverse nutrients, such as eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), phospholipids, astaxanthin and tocopherols. Although krill oil has been previously proved to have anti-inflammatory activity, there is little information about the relationship between its chemical compositions and anti-inflammatory activity. In this study, the RAW264.7 macrophages model was used to elucidate and compare the anti-inflammatory potential of different krill lipid fractions: KLF-A, KLF-H and KLF-E, which have increasing phospholipids, EPA and DHA contents but decreasing astaxanthin and tocopherols levels. Results showed that all the krill lipid fractions alleviated the inflammatory reaction by inhibition of production of nitric oxide (NO), release of tumor necrosis factor-α (TNF-α), interleukin (IL)-1β and IL-6 and gene expression of proinflammatory mediators including TNF-α, IL-1β, IL-6, cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS). In addition, KLF-E with the highest phospholipids, EPA and DHA contents showed the strongest inhibition effect on the LPS-induced proinflammatory mediator release and their gene expressions. The results would be helpful to provide powerful insights into the underlying anti-inflammatory mechanism of krill lipid and guiding the production of krill oil products with tailor-made anti-inflammatory activity.Dan XieFangyuan HeXiaosan WangXingguo WangQingzhe JinJun JinMDPI AGarticlekrill oilanti-inflammatory effectRAW 264.7 cellchemical compositionChemical technologyTP1-1185ENFoods, Vol 10, Iss 2887, p 2887 (2021)
institution DOAJ
collection DOAJ
language EN
topic krill oil
anti-inflammatory effect
RAW 264.7 cell
chemical composition
Chemical technology
TP1-1185
spellingShingle krill oil
anti-inflammatory effect
RAW 264.7 cell
chemical composition
Chemical technology
TP1-1185
Dan Xie
Fangyuan He
Xiaosan Wang
Xingguo Wang
Qingzhe Jin
Jun Jin
Diverse Krill Lipid Fractions Differentially Reduce LPS-Induced Inflammatory Markers in RAW264.7 Macrophages In Vitro
description Antarctic krill oil is an emerging marine lipid and expected to be a potential functional food due to its diverse nutrients, such as eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), phospholipids, astaxanthin and tocopherols. Although krill oil has been previously proved to have anti-inflammatory activity, there is little information about the relationship between its chemical compositions and anti-inflammatory activity. In this study, the RAW264.7 macrophages model was used to elucidate and compare the anti-inflammatory potential of different krill lipid fractions: KLF-A, KLF-H and KLF-E, which have increasing phospholipids, EPA and DHA contents but decreasing astaxanthin and tocopherols levels. Results showed that all the krill lipid fractions alleviated the inflammatory reaction by inhibition of production of nitric oxide (NO), release of tumor necrosis factor-α (TNF-α), interleukin (IL)-1β and IL-6 and gene expression of proinflammatory mediators including TNF-α, IL-1β, IL-6, cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS). In addition, KLF-E with the highest phospholipids, EPA and DHA contents showed the strongest inhibition effect on the LPS-induced proinflammatory mediator release and their gene expressions. The results would be helpful to provide powerful insights into the underlying anti-inflammatory mechanism of krill lipid and guiding the production of krill oil products with tailor-made anti-inflammatory activity.
format article
author Dan Xie
Fangyuan He
Xiaosan Wang
Xingguo Wang
Qingzhe Jin
Jun Jin
author_facet Dan Xie
Fangyuan He
Xiaosan Wang
Xingguo Wang
Qingzhe Jin
Jun Jin
author_sort Dan Xie
title Diverse Krill Lipid Fractions Differentially Reduce LPS-Induced Inflammatory Markers in RAW264.7 Macrophages In Vitro
title_short Diverse Krill Lipid Fractions Differentially Reduce LPS-Induced Inflammatory Markers in RAW264.7 Macrophages In Vitro
title_full Diverse Krill Lipid Fractions Differentially Reduce LPS-Induced Inflammatory Markers in RAW264.7 Macrophages In Vitro
title_fullStr Diverse Krill Lipid Fractions Differentially Reduce LPS-Induced Inflammatory Markers in RAW264.7 Macrophages In Vitro
title_full_unstemmed Diverse Krill Lipid Fractions Differentially Reduce LPS-Induced Inflammatory Markers in RAW264.7 Macrophages In Vitro
title_sort diverse krill lipid fractions differentially reduce lps-induced inflammatory markers in raw264.7 macrophages in vitro
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/59ddd7f2cc2f47e6861cc9366fcf9892
work_keys_str_mv AT danxie diversekrilllipidfractionsdifferentiallyreducelpsinducedinflammatorymarkersinraw2647macrophagesinvitro
AT fangyuanhe diversekrilllipidfractionsdifferentiallyreducelpsinducedinflammatorymarkersinraw2647macrophagesinvitro
AT xiaosanwang diversekrilllipidfractionsdifferentiallyreducelpsinducedinflammatorymarkersinraw2647macrophagesinvitro
AT xingguowang diversekrilllipidfractionsdifferentiallyreducelpsinducedinflammatorymarkersinraw2647macrophagesinvitro
AT qingzhejin diversekrilllipidfractionsdifferentiallyreducelpsinducedinflammatorymarkersinraw2647macrophagesinvitro
AT junjin diversekrilllipidfractionsdifferentiallyreducelpsinducedinflammatorymarkersinraw2647macrophagesinvitro
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