Effects of guluronic acid (G2013) on gene expression of TLR2, TLR4, MyD88, TNF-α and CD52 in multiple sclerosis under in vitro conditions

Immunopharmacol Immunotoxicol. 2019 Dec;41(6):586-590. doi: 10.1080/08923973.2019.1672179. Epub 2019 Oct 8.

Abstract

Context: Multiple sclerosis (MS) is an autoimmune and chronic inflammatory disease of CNS. The α-L-guluronic acid (G2013) as novel NSAID with immunomodulatory effects has shown its positive effects in various investigations.Objective: Present research aimed to study the potency of G2013 on gene expression of TLR2, TLR4, MyD88, TNF-α and CD52 in PBMCs of MS patients under in vitro conditions. Materials and methods: 24 blood samples from MS patients and healthy controls were considered for RT-PCR and flow cytometry techniques under two different doses of G2013.Results: Our research indicated that this drug could significantly decrease the gene expression of TLR2, TLR4 and TNF-α compared to untreated group. Conclusion: Data demonstrated that the guluronic acid is able to modify the expression levels of TLR2, TLR4 and TNF-α genes to less than the pathogenic boarder line level, which it might be recommended for reducing the pathological process in multiple sclerosis.

Keywords: CD52; G2013; Guluronic acid; MYD88; Multiple sclerosis; TLR; TNF-α.

MeSH terms

  • Adult
  • CD52 Antigen / biosynthesis*
  • Female
  • Gene Expression Regulation / drug effects*
  • Hexuronic Acids / pharmacology*
  • Humans
  • Male
  • Middle Aged
  • Multiple Sclerosis / metabolism*
  • Multiple Sclerosis / pathology
  • Myeloid Differentiation Factor 88 / biosynthesis*
  • Toll-Like Receptor 2 / biosynthesis*
  • Toll-Like Receptor 4 / biosynthesis*
  • Tumor Necrosis Factor-alpha / biosynthesis*

Substances

  • CD52 Antigen
  • CD52 protein, human
  • Hexuronic Acids
  • MYD88 protein, human
  • Myeloid Differentiation Factor 88
  • TLR2 protein, human
  • TLR4 protein, human
  • Toll-Like Receptor 2
  • Toll-Like Receptor 4
  • Tumor Necrosis Factor-alpha
  • guluronic acid