Anti-Inflammatory Effect of an O -2-Substituted (1-3)-β-D-Glucan Produced by Pediococcus parvulus 2.6 in a Caco-2 PMA-THP-1 Co-Culture Model

• Published in: International journal of molecular sciences 2022-01, Vol.23 (3), p.1527
• Main Authors: Notararigo, Sara, Varela, Encarnación, Otal, Anna, Antolín, María, Guarner, Francisco, López, Paloma
• Format: Article
• Language: English
• Subjects: Anti-Inflammatory Agents - chemistry; Anti-Inflammatory Agents - pharmacology; Bacteria; beta-Glucans - chemistry; beta-Glucans - pharmacology; Biofilms; Caco-2 Cells; Cell adhesion; Cell Adhesion - drug effects; Cell culture; Cell lines; Coculture Techniques; Cytokines; Cytokines - metabolism; Enterocytes; Exopolysaccharides; Gene Expression Regulation - drug effects; Glucan; Glucans; Glucans - pharmacology; Humans; Immune system; Immunomodulation; Immunomodulators; Inflammatory bowel diseases; Interleukin 10; Interleukin 8; Interleukin-10 - metabolism; Interleukin-8 - metabolism; Lactic acid; Lactococcus lactis - chemistry; Laminarin; Pediococcus; Pediococcus - chemistry; Remission; Respiration; Signal transduction; Substitutes; THP-1 Cells; Tumor Necrosis Factor-alpha - metabolism; Tumor necrosis factor-α; β-Glucan
• ISSN: 1422-0067; 1661-6596; 1422-0067
• DOI: 10.3390/ijms23031527

Bacterial β-glucans are exopolysaccharides (EPSs), which can protect bacteria or cooperate in biofilm formation or in bacterial cell adhesion. 2.6 is a lactic acid bacterium that produces an -2-substituted (1-3)-β-D-glucan. The structural similarity of this EPS to active compounds such as laminarin, together with its ability to modulate the immune system and to adhere in vitro to human enterocytes, led us to investigate, in comparison with laminarin, its potential as an immunomodulator of in vitro co-cultured Caco-2 and PMA-THP-1 cells. -2-substituted (1-3)-β-D-glucan synthesized by the GTF glycosyl transferase of 2.6 or that by NZ9000[pGTF] were purified and used in this study. The XTT tests revealed that all β-glucans were non-toxic for both cell lines and activated PMA-THP-1 cells' metabolisms. The -2-substituted (1-3)-β-D-glucan modulated production and expression of IL-8 and the IL-10 in Caco-2 and PMA-THP-1 cells. Laminarin also modulated cytokine production by diminishing TNF-α in Caco-2 cells and IL-8 in PMA-THP-1. All these features could be considered with the aim to produce function foods, supplemented with laminarin or with another novel β-glucan-producing strain, in order to ameliorate an individual's immune system response toward pathogens or to control mild side effects in remission patients affected by inflammatory bowel diseases.