PMID- 34893295 OWN - NLM STAT- MEDLINE DCOM- 20220316 LR - 20220316 IS - 1879-1344 (Electronic) IS - 0144-8617 (Linking) VI - 277 DP - 2022 Feb 1 TI - beta(2-->6)-Type fructans attenuate proinflammatory responses in a structure dependent fashion via Toll-like receptors. PG - 118893 LID - S0144-8617(21)01280-7 [pii] LID - 10.1016/j.carbpol.2021.118893 [doi] AB - Graminan-type fructans (GTFs) have demonstrated immune benefits. However, mechanisms underlying these benefits are unknown. We studied GTFs interaction with Toll-like receptors (TLRs), performed molecular docking and determined their impact on dendritic cells (DCs). Effects of GTFs were compared with those of inulin-type fructans (ITFs). Whereas ITFs only contained beta(2-->1)-linked fructans, GTFs showed higher complexity as it contains additional beta(2-->6)-linkages. GTFs activated NF-kappaB/AP-1 through MyD88 and TRIF pathways. GTFs stimulated TLR3, 7 and 9 while ITFs activated TLR2 and TLR4. GTFs strongly inhibited TLR2 and TLR4, while ITFs did not inhibit any TLR. Molecular docking demonstrated interactions of fructans with TLR2, 3, and 4 in a structure dependent fashion. Moreover, ITFs and GTFs attenuated pro-inflammatory cytokine production of stimulated DCs. These findings demonstrate immunomodulatory effects of GTFs via TLRs and attenuation of cytokine production in dendritic cells by GTFs and long-chain ITF. CI - Copyright (c) 2021 The Authors. Published by Elsevier Ltd.. All rights reserved. FAU - Fernandez-Lainez, C AU - Fernandez-Lainez C AD - Immunoendocrinology, Division of Medical Biology, Department of Pathology and Medical Biology, University of Groningen and University Medical Center Groningen, Hanzeplein 1, 9700 RB Groningen, the Netherlands; Laboratorio de Errores Innatos del Metabolismo y Tamiz, Instituto Nacional de Pediatria, Ciudad de Mexico, Mexico; Posgrado en Ciencias Biologicas, Universidad Nacional Autonoma de Mexico UNAM, Ciudad de Mexico, Mexico. Electronic address: c.fernandez.lainez@umcg.nl. FAU - Akkerman, R AU - Akkerman R AD - Immunoendocrinology, Division of Medical Biology, Department of Pathology and Medical Biology, University of Groningen and University Medical Center Groningen, Hanzeplein 1, 9700 RB Groningen, the Netherlands. FAU - Oerlemans, M M P AU - Oerlemans MMP AD - Immunoendocrinology, Division of Medical Biology, Department of Pathology and Medical Biology, University of Groningen and University Medical Center Groningen, Hanzeplein 1, 9700 RB Groningen, the Netherlands. FAU - Logtenberg, M J AU - Logtenberg MJ AD - Laboratory of Food Chemistry, Wageningen University, Wageningen, the Netherlands. FAU - Schols, H A AU - Schols HA AD - Laboratory of Food Chemistry, Wageningen University, Wageningen, the Netherlands. FAU - Silva-Lagos, L A AU - Silva-Lagos LA AD - Immunoendocrinology, Division of Medical Biology, Department of Pathology and Medical Biology, University of Groningen and University Medical Center Groningen, Hanzeplein 1, 9700 RB Groningen, the Netherlands. FAU - Lopez-Velazquez, G AU - Lopez-Velazquez G AD - Laboratorio de Biomoleculas y Salud Infantil, Instituto Nacional de Pediatria, Ciudad de Mexico, Mexico. FAU - de Vos, P AU - de Vos P AD - Immunoendocrinology, Division of Medical Biology, Department of Pathology and Medical Biology, University of Groningen and University Medical Center Groningen, Hanzeplein 1, 9700 RB Groningen, the Netherlands. LA - eng PT - Journal Article DEP - 20211115 PL - England TA - Carbohydr Polym JT - Carbohydrate polymers JID - 8307156 RN - 0 (Fructans) RN - 0 (Toll-Like Receptors) SB - IM MH - Carbohydrate Conformation MH - Cell Line MH - Fructans/*immunology MH - Humans MH - Inflammation/*immunology MH - Toll-Like Receptors/*immunology OTO - NOTNLM OT - Branched-chain fructans OT - Functional food OT - Immunomodulation OT - Non-digestible carbohydrates OT - Toll-like receptors EDAT- 2021/12/12 06:00 MHDA- 2022/03/17 06:00 CRDT- 2021/12/11 05:29 PHST- 2021/07/31 00:00 [received] PHST- 2021/10/25 00:00 [revised] PHST- 2021/11/11 00:00 [accepted] PHST- 2021/12/11 05:29 [entrez] PHST- 2021/12/12 06:00 [pubmed] PHST- 2022/03/17 06:00 [medline] AID - S0144-8617(21)01280-7 [pii] AID - 10.1016/j.carbpol.2021.118893 [doi] PST - ppublish SO - Carbohydr Polym. 2022 Feb 1;277:118893. doi: 10.1016/j.carbpol.2021.118893. Epub 2021 Nov 15.