Taxonomic group: bacteria / Firmicutes
(Phylum: Firmicutes)
NCBI PubMed ID: 35163449Publication DOI: 10.3390/ijms23031527Journal NLM ID: 101092791Publisher: Basel, Switzerland: MDPI
Correspondence: P. Lopez <plg
cib.csic.es>
Institutions: Molecular Biology of Gram-Positive Bacteria, Margarita Salas Center for Biological Research (CIB-Margarita Salas-CSIC), Department of Microbial and Plant Biotechnology, Ramiro de Maeztu 9, 28040 Madrid, Spain, Digestive System Research Unit, Institut de RecercaValld'Hebron (VHIR), University Hospital Valld'Hebron, Universitat Autonoma de Barcelona, 08193 Barcelona, Spain
Bacterial β-glucans are exopolysaccharides (EPSs), which can protect bacteria or cooperate in biofilm formation or in bacterial cell adhesion. Pediococcus parvulus 2.6 is a lactic acid bacterium that produces an O-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. O-2-substituted (1-3)-β-D-glucan synthesized by the GTF glycosyl transferase of Pediococcus parvulus 2.6 or that by Lactococcus lactis 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 O-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.
Bacterial exopolysaccharides, anti-inflammatory, (1-3)-β-D-glucan, immunomodulators, Pediococcus parvulus, post-biotic
Structure type: polymer chemical repeating unit
Location inside paper: abstract
Trivial name: β-D-glucan, (1,3)-β-D-glucan
Compound class: EPS, glucan, polysaccharide
Contained glycoepitopes: IEDB_1397514,IEDB_140628,IEDB_142488,IEDB_146664,IEDB_153543,IEDB_158555,IEDB_161166,IEDB_558869,IEDB_857743,IEDB_983931,SB_192
Methods: RNA analysis, statistical analysis, cell growth, dialysis, cytokine production, cytotoxicity assay, RNA extraction, RT-qPCR, co-cultured in vitro gut model of Caco-2 and PMA-THP-1
NCBI Taxonomy refs (TaxIDs): 54062Reference(s) to other database(s): GTC:G96376NM, GlycomeDB:
25524
Show glycosyltransferases
There is only one chemically distinct structure:
Found 
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