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Cholesterol-Induced Impact on Murine Macrophage Responsiveness Involves down-Regulation of Mevalonate Pathway

Received: 8 February 2014    Accepted:     Published: 10 March 2014
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Abstract

Free cholesterol (Ch) and its oxidative derivatives, oxysterols, are often accumulated in macrophages during chronic inflammation and atherogenesis. The effects of Ch and oxysterols on the balance of pro- and anti-inflammatory cytokines in inflammatory response and the role of mevalonate pathway in the effects of these sterols are studied poorly. We studied the effects of cholesterol, oxysterols, atorvastatin, and mevalonic acid on the LPS-induced TNF-α, IL-10, and TGF-β1 production in macrophage cell culture. The study was carried out in murine peritoneal macrophages preincubated for 4 h with Ch (5 µg/mL), 25-hydroxycholesterol (25-OH-Ch) (5 µg/mL), 7-keto-Ch (5 µg/mL), farnesol (10 µM), or atorvastatin (5 µmol/mL) in the presence or absence of 1 mM of mevalonate. The cells were further incubated in the presence or absence of E. coli 0111:B4 lipopolysaccharide (LPS) for 24 h, and cytokine concentrations in incubation media were determined. Macrophages preincubation with Ch, 25-OH-Ch, or atorvastatin decreased LPS-induced TNF-α production in cell cultures, while supplementation of preincubation medium with mevalonic acid abrogated the effects of atorvastatin and Ch. The Ch, 25-OH-Ch, 7-keto-Ch and atorvastatin significantly reduced IL-10 production by LPS–stimulated macrophages, while farnesol had no effect. Supplementation of Ch or atorvastatin-containing preincubation medium with mevalonate restored IL-10 production. The TGF-β1 production was significantly enhanced by the presence of Ch or atorvastatin in preincubation medium as compared to the control level in non-treated macrophages, while 25-OH-Ch or farnesol decreased profoundly TGF-β1 production. Mevalonate abrogated the effect of Ch or atorvastatin but not of 25-OH-Ch or farnesol. These results allow to conclude, that Ch is able to promote anti-inflammatory and fibrogenic macrophage response, which is connected, at least in part, with the deficiency of mevalonate pathway intermediates, particularly to the deficiency of farnesol, whereas hydroxysterols produce tolerogenic, but not fibrogenic effect, independently of mevalonate pathway.

Published in Advances in Biochemistry (Volume 2, Issue 1)
DOI 10.11648/j.ab.20140201.14
Page(s) 24-28
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This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Macrophage, Cytokines, Cholesterol, Oxysterols, Mevalonate Pathway

References
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[6] M. I. Dushkin, E. I. Vereshchagin, A. Iu. Grebenshchikov, A. F. Safina and Y. Sh. Schwartz, "Effects of hydroxysterols on expression of inflammatory cytokine genes and their level in macrophages tolerant to endotoxin," Bull Exp Biol Med, vol. 127, pp. 71-4, Jan 1999.
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[12] B. G. Ohlsson, M. C. Englund, A. L. Karlsson, E. Knutsen, C. Erixon, H. Skribeck, et al., "Oxidized low density lipoprotein inhibits lipopolysaccharide-induced binding of nuclear factor-kappaB to DNA and the subsequent expression of tumor necrosis factor-alpha and interleukin-1beta in macrophages," J Clin Invest, vol. 88, pp. 78-89, Jul 1996.
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    Yakov Sh. Schwartz, Olga M. Dolganova, Sergey V. Cheresiz. (2014). Cholesterol-Induced Impact on Murine Macrophage Responsiveness Involves down-Regulation of Mevalonate Pathway. Advances in Biochemistry, 2(1), 24-28. https://doi.org/10.11648/j.ab.20140201.14

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    Yakov Sh. Schwartz; Olga M. Dolganova; Sergey V. Cheresiz. Cholesterol-Induced Impact on Murine Macrophage Responsiveness Involves down-Regulation of Mevalonate Pathway. Adv. Biochem. 2014, 2(1), 24-28. doi: 10.11648/j.ab.20140201.14

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    AMA Style

    Yakov Sh. Schwartz, Olga M. Dolganova, Sergey V. Cheresiz. Cholesterol-Induced Impact on Murine Macrophage Responsiveness Involves down-Regulation of Mevalonate Pathway. Adv Biochem. 2014;2(1):24-28. doi: 10.11648/j.ab.20140201.14

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  • @article{10.11648/j.ab.20140201.14,
      author = {Yakov Sh. Schwartz and Olga M. Dolganova and Sergey V. Cheresiz},
      title = {Cholesterol-Induced Impact on Murine Macrophage Responsiveness Involves down-Regulation of Mevalonate Pathway},
      journal = {Advances in Biochemistry},
      volume = {2},
      number = {1},
      pages = {24-28},
      doi = {10.11648/j.ab.20140201.14},
      url = {https://doi.org/10.11648/j.ab.20140201.14},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ab.20140201.14},
      abstract = {Free cholesterol (Ch) and its oxidative derivatives, oxysterols, are often accumulated in macrophages during chronic inflammation and atherogenesis. The effects of Ch and oxysterols on the balance of pro- and anti-inflammatory cytokines in inflammatory response and the role of mevalonate pathway in the effects of these sterols are studied poorly. We studied the effects of cholesterol, oxysterols, atorvastatin, and mevalonic acid on the LPS-induced TNF-α, IL-10, and TGF-β1 production in macrophage cell culture. The study was carried out in murine peritoneal macrophages preincubated for 4 h with Ch (5 µg/mL), 25-hydroxycholesterol (25-OH-Ch) (5 µg/mL), 7-keto-Ch (5 µg/mL), farnesol (10 µM), or atorvastatin (5 µmol/mL) in the presence or absence of 1 mM of mevalonate. The cells were further incubated in the presence or absence of E. coli 0111:B4 lipopolysaccharide (LPS) for 24 h, and cytokine concentrations in incubation media were determined. Macrophages preincubation with Ch, 25-OH-Ch, or atorvastatin decreased LPS-induced TNF-α production in cell cultures, while supplementation of preincubation medium with mevalonic acid abrogated the effects of atorvastatin and Ch. The Ch, 25-OH-Ch, 7-keto-Ch and atorvastatin significantly reduced IL-10 production by LPS–stimulated macrophages, while farnesol had no effect. Supplementation of Ch or atorvastatin-containing preincubation medium with mevalonate restored IL-10 production. The TGF-β1 production was significantly enhanced by the presence of Ch or atorvastatin in preincubation medium as compared to the control level in non-treated macrophages, while 25-OH-Ch or farnesol decreased profoundly TGF-β1 production. Mevalonate abrogated the effect of Ch or atorvastatin but not of 25-OH-Ch or farnesol. These results allow to conclude, that Ch is able to promote anti-inflammatory and fibrogenic macrophage response, which is connected, at least in part, with the deficiency of mevalonate pathway intermediates, particularly to the deficiency of farnesol, whereas hydroxysterols produce tolerogenic, but not fibrogenic effect, independently of mevalonate pathway.},
     year = {2014}
    }
    

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  • TY  - JOUR
    T1  - Cholesterol-Induced Impact on Murine Macrophage Responsiveness Involves down-Regulation of Mevalonate Pathway
    AU  - Yakov Sh. Schwartz
    AU  - Olga M. Dolganova
    AU  - Sergey V. Cheresiz
    Y1  - 2014/03/10
    PY  - 2014
    N1  - https://doi.org/10.11648/j.ab.20140201.14
    DO  - 10.11648/j.ab.20140201.14
    T2  - Advances in Biochemistry
    JF  - Advances in Biochemistry
    JO  - Advances in Biochemistry
    SP  - 24
    EP  - 28
    PB  - Science Publishing Group
    SN  - 2329-0862
    UR  - https://doi.org/10.11648/j.ab.20140201.14
    AB  - Free cholesterol (Ch) and its oxidative derivatives, oxysterols, are often accumulated in macrophages during chronic inflammation and atherogenesis. The effects of Ch and oxysterols on the balance of pro- and anti-inflammatory cytokines in inflammatory response and the role of mevalonate pathway in the effects of these sterols are studied poorly. We studied the effects of cholesterol, oxysterols, atorvastatin, and mevalonic acid on the LPS-induced TNF-α, IL-10, and TGF-β1 production in macrophage cell culture. The study was carried out in murine peritoneal macrophages preincubated for 4 h with Ch (5 µg/mL), 25-hydroxycholesterol (25-OH-Ch) (5 µg/mL), 7-keto-Ch (5 µg/mL), farnesol (10 µM), or atorvastatin (5 µmol/mL) in the presence or absence of 1 mM of mevalonate. The cells were further incubated in the presence or absence of E. coli 0111:B4 lipopolysaccharide (LPS) for 24 h, and cytokine concentrations in incubation media were determined. Macrophages preincubation with Ch, 25-OH-Ch, or atorvastatin decreased LPS-induced TNF-α production in cell cultures, while supplementation of preincubation medium with mevalonic acid abrogated the effects of atorvastatin and Ch. The Ch, 25-OH-Ch, 7-keto-Ch and atorvastatin significantly reduced IL-10 production by LPS–stimulated macrophages, while farnesol had no effect. Supplementation of Ch or atorvastatin-containing preincubation medium with mevalonate restored IL-10 production. The TGF-β1 production was significantly enhanced by the presence of Ch or atorvastatin in preincubation medium as compared to the control level in non-treated macrophages, while 25-OH-Ch or farnesol decreased profoundly TGF-β1 production. Mevalonate abrogated the effect of Ch or atorvastatin but not of 25-OH-Ch or farnesol. These results allow to conclude, that Ch is able to promote anti-inflammatory and fibrogenic macrophage response, which is connected, at least in part, with the deficiency of mevalonate pathway intermediates, particularly to the deficiency of farnesol, whereas hydroxysterols produce tolerogenic, but not fibrogenic effect, independently of mevalonate pathway.
    VL  - 2
    IS  - 1
    ER  - 

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Author Information
  • FSBI ?Research Institute of Internal and Preventive Medicine?, SB RAS, Novosibirsk, Russia

  • FSBI ?Research Institute of Internal and Preventive Medicine?, SB RAS, Novosibirsk, Russia

  • FSBI ?Research Institute of Internal and Preventive Medicine?, SB RAS, Novosibirsk, Russia;FSEIHPE “National Research Novosibirsk State University”, Novosibirsk, Russia

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