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Akkerman R, Oerlemans MMP, Ferrari M, Fernández-Lainez C, de Haan BJ, Faas MM, Walvoort MTC, de Vos P. Exopolysaccharide β-(2,6)-levan-type fructans have a molecular-weight-dependent modulatory effect on Toll-like receptor signalling. Food Funct 2024; 15:676-688. [PMID: 38108152 PMCID: PMC10802977 DOI: 10.1039/d3fo03066k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 12/06/2023] [Indexed: 12/19/2023]
Abstract
SCOPE Fructans are a group of dietary fibers which are known to have many beneficial effects including immune-modulating effects. A family of fructans are β-(2,6)-linked levan-type fructans that are known to serve as exopolysaccharides in the cell wall of many species of bacteria including commensal bacteria and probiotics. It is still largely unknown whether and how they can serve as immunomodulating molecules. RESULTS Microbial β-(2,6)-fructans were found to induce TLR-dependent activation of THP-1 cells, in a dose-dependent fashion. Low molecular weight (Mw), medium Mw and high Mw β-(2,6)-fructans activated both TLR2 and 4 in a dose- and molecular weight-dependent fashion. In addition, it was found that β-(2,6)-fructans were able to inhibit signalling of various TLRs with the strongest effect on TLR5 and 8, which were inhibited by all the β-(2,6)-fructans in a dose- and molecular weight-dependent fashion. The final effect of this activation and inhibition of TLRs on cytokine responses in human dendritic cells (DCs) was minor which may be explained by the counter-activating effects of the different β-(2,6)-linked levan-type fructans on inhibition of TLR signalling in the DCs. CONCLUSION A mechanism by which exopolysaccharide levan β-(2,6)-fructans can be immune-modulating is by impacting TLR signalling. This knowledge could lead to food in which exopolysaccharide levan β-(2,6)-fructans are added for preventing disorders where TLR-signalling is modulated.
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Affiliation(s)
- Renate Akkerman
- Department of Pathology and Medical Biology, University Medical Center Groningen, Groningen, The Netherlands.
| | - Marjolein M P Oerlemans
- Department of Pathology and Medical Biology, University Medical Center Groningen, Groningen, The Netherlands.
| | - Michela Ferrari
- Department of Chemical Biology, Stratingh Institute for Chemistry, University of Groningen, Groningen, The Netherlands
| | - Cynthia Fernández-Lainez
- Department of Pathology and Medical Biology, University Medical Center Groningen, Groningen, The Netherlands.
- Laboratorio de Errores Innatos del Metabolismo y Tamiz, Instituto Nacional de Pediatría, Ciudad de México, Mexico
- Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México UNAM, Ciudad de México, Mexico
| | - Bart J de Haan
- Department of Pathology and Medical Biology, University Medical Center Groningen, Groningen, The Netherlands.
| | - Marijke M Faas
- Department of Pathology and Medical Biology, University Medical Center Groningen, Groningen, The Netherlands.
| | - Marthe T C Walvoort
- Department of Chemical Biology, Stratingh Institute for Chemistry, University of Groningen, Groningen, The Netherlands
| | - Paul de Vos
- Department of Pathology and Medical Biology, University Medical Center Groningen, Groningen, The Netherlands.
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2
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Silva Lagos L, Klostermann CE, López-Velázquez G, Fernández-Lainez C, Leemhuis H, Oudhuis AACML, Buwalda P, Schols HA, de Vos P. Crystal type, chain length and polydispersity impact the resistant starch type 3 immunomodulatory capacity via Toll-like receptors. Carbohydr Polym 2024; 324:121490. [PMID: 37985084 DOI: 10.1016/j.carbpol.2023.121490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 10/04/2023] [Accepted: 10/12/2023] [Indexed: 11/22/2023]
Abstract
Food ingredients that can activate and improve immunological defense, against e.g., pathogens, have become a major field of research. Resistant starches (RSs) can resist enzymes in the upper gastrointestinal (GI) tract and induce health benefits. RS-3 physicochemical characteristics such as chain length (DP), A- or B-type crystal, and polydispersity index (PI) might be crucial for immunomodulation by activating human toll-like receptors (hTLRs). We hypothesize that crystal type, DP and PI, alone or in combination, impact the recognition of RS-3 preparations by hTLRs leading to different RS-3 immunomodulatory effects. We studied the activation of hTLR2, hTLR4, and hTLR5 by 0.5, 1 and 2 mg/mL of RS-3. We found strong activation of hTLR2-dependent NF-kB activation with PI <1.25, DP 18 as an A- or B-type crystal. At different doses, NF-kB activation was increased from 6.8 to 7.1 and 10-fold with A-type and 6.2 to 10.2 and 14.4-fold with B-type. This also resulted in higher cytokine production in monocytes. Molecular docking, using amylose-A and B, demonstrated that B-crystals bind hTLR2 promoting hTLR2-1 dimerization, supporting the stronger effects of B-type crystals. Immunomodulatory effects of RS-3 are predominantly hTLR2-dependent, and activation can be tailored by managing crystallinity, chain length, and PI.
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Affiliation(s)
- Luis Silva Lagos
- Immunoendocrinology, Department of Pathology and Medical Biology, University Medical Center Groningen, Groningen, the Netherlands.
| | - Cynthia E Klostermann
- Biobased Chemistry and Technology, Wageningen University & Research, Wageningen, the Netherlands
| | - Gabriel López-Velázquez
- Laboratorio de Biomoléculas y Salud Infantil, Instituto Nacional de Pediatría, Cuidad de México, Mexico
| | - Cynthia Fernández-Lainez
- Immunoendocrinology, Department of Pathology and Medical Biology, University Medical Center Groningen, Groningen, the Netherlands; Laboratorio de Errores innatos del Metabolismo y Tamiz, Instituto Nacional de Pediatría, Ciudad de México, Mexico
| | - Hans Leemhuis
- Innovation Center, Royal Avebe, Groningen, the Netherlands
| | | | - Piet Buwalda
- Biobased Chemistry and Technology, Wageningen University & Research, Wageningen, the Netherlands; Innovation Center, Royal Avebe, Groningen, the Netherlands
| | - Henk A Schols
- Laboratory of Food Chemistry, Wageningen University & Research, Wageningen, the Netherlands
| | - Paul de Vos
- Immunoendocrinology, Department of Pathology and Medical Biology, University Medical Center Groningen, Groningen, the Netherlands
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3
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Digestibility of resistant starch type 3 is affected by crystal type, molecular weight and molecular weight distribution. Carbohydr Polym 2021; 265:118069. [PMID: 33966833 DOI: 10.1016/j.carbpol.2021.118069] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 04/06/2021] [Accepted: 04/07/2021] [Indexed: 02/06/2023]
Abstract
Resistant starch type 3 (RS-3) holds great potential as a prebiotic by supporting gut microbiota following intestinal digestion. However the factors influencing the digestibility of RS-3 are largely unknown. This research aims to reveal how crystal type and molecular weight (distribution) of RS-3 influence its resistance. Narrow and polydisperse α-glucans of degree of polymerization (DP) 14-76, either obtained by enzymatic synthesis or debranching amylopectins from different sources, were crystallized in 12 different A- or B-type crystals and in vitro digested. Crystal type had the largest influence on resistance to digestion (A >>> B), followed by molecular weight (Mw) (high DP >> low DP) and Mw distribution (narrow disperse > polydisperse). B-type crystals escaping digestion changed in Mw and Mw distribution compared to that in the original B-type crystals, whereas A-type crystals were unchanged. This indicates that pancreatic α-amylase binds and acts differently to A- or B-type RS-3 crystals.
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Beukema M, Jermendi É, van den Berg MA, Faas MM, Schols HA, de Vos P. The impact of the level and distribution of methyl-esters of pectins on TLR2-1 dependent anti-inflammatory responses. Carbohydr Polym 2020; 251:117093. [PMID: 33152851 DOI: 10.1016/j.carbpol.2020.117093] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 09/09/2020] [Accepted: 09/11/2020] [Indexed: 01/26/2023]
Abstract
Pectins have anti-inflammatory effects via Toll-like receptor (TLR) inhibition in a degree of methyl-esterification-(DM)-dependent manner. However, pectins also vary in distribution of methyl-esters over the galacturonic-acid (GalA) backbone (Degree of Blockiness - DB) and impact of this on anti-inflammatory capacity is unknown. Pectins mainly inhibit TLR2-1 but magnitude depends on both DM and DB. Low DM pectins (DM18/19) with both low (DB86) and high DB (DB94) strongly inhibit TLR2-1. However, pectins with intermediate DM (DM43/DM49) and high DB (DB60), but not with low DB (DB33), inhibit TLR2-1 as strongly as low DM. High DM pectins (DM84/88) with DB71 and DB91 do not inhibit TLR2-1 strongly. Pectin-binding to TLR2 was confirmed by capture-ELISA. In human macrophages, low DM and intermediate DM pectins with high DB inhibited TLR2-1 induced IL-6 secretion. Both high number and blockwise distribution of non-esterified GalA in pectins are responsible for the anti-inflammatory effects via inhibition of TLR2-1.
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Affiliation(s)
- M Beukema
- Immunoendocrinology, Division of Medical Biology, Department of Pathology and Medical Biology, University Medical Center Groningen, Hanzeplein 1, 9713 GZ, Groningen, the Netherlands.
| | - É Jermendi
- Laboratory of Food Chemistry, Wageningen University, Bornse Weilanden 9, 6708 WG, Wageningen, the Netherlands.
| | - M A van den Berg
- DSM Biotechnology Center, Alexander Fleminglaan 1, 2613 AX, Delft, the Netherlands.
| | - M M Faas
- Immunoendocrinology, Division of Medical Biology, Department of Pathology and Medical Biology, University Medical Center Groningen, Hanzeplein 1, 9713 GZ, Groningen, the Netherlands.
| | - H A Schols
- Laboratory of Food Chemistry, Wageningen University, Bornse Weilanden 9, 6708 WG, Wageningen, the Netherlands.
| | - P de Vos
- Immunoendocrinology, Division of Medical Biology, Department of Pathology and Medical Biology, University Medical Center Groningen, Hanzeplein 1, 9713 GZ, Groningen, the Netherlands.
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Panebianco C, Villani A, Pazienza V. High Levels of Prebiotic Resistant Starch in Diet Modulate Gene Expression and Metabolomic Profile in Pancreatic Cancer Xenograft Mice. Nutrients 2019; 11:nu11040709. [PMID: 30934731 PMCID: PMC6521226 DOI: 10.3390/nu11040709] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 03/19/2019] [Accepted: 03/25/2019] [Indexed: 12/28/2022] Open
Abstract
Cancer initiation and protection mainly derives from a systemic metabolic environment regulated by dietary patterns. Less is known about the impact of nutritional interventions in people with a diagnosis of cancer. The aim of our study was to investigate the effect of a diet rich in resistant starch (RS) on cell pathways modulation and metabolomic phenotype in pancreatic cancer xenograft mice. RNA-Seq experiments on tumor tissue showed that 25 genes resulted in dysregulated pancreatic cancer in mice fed with an RS diet, as compared to those fed with control diet. Moreover, in these two different mice groups, six serum metabolites were deregulated as detected by LC–MS analysis. A bioinformatic prediction analysis showed the involvement of the differentially expressed genes on insulin receptor signaling, circadian rhythm signaling, and cancer drug resistance among the three top canonical pathways, whilst cell death and survival, gene expression, and neurological disease were among the three top disease and biological functions. These findings shed light on the genomic and metabolic phenotype, contributing to the knowledge of the mechanisms through which RS may act as a potential supportive approach for enhancing the efficacy of existing cancer treatments.
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Affiliation(s)
- Concetta Panebianco
- Gastroenterology Unit, Fondazione IRCCS Casa Sollievo della Sofferenza, 71013 San Giovanni Rotondo, Italy.
| | - Annacandida Villani
- Gastroenterology Unit, Fondazione IRCCS Casa Sollievo della Sofferenza, 71013 San Giovanni Rotondo, Italy.
| | - Valerio Pazienza
- Gastroenterology Unit, Fondazione IRCCS Casa Sollievo della Sofferenza, 71013 San Giovanni Rotondo, Italy.
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Lépine AF, de Hilster RHJ, Leemhuis H, Oudhuis L, Buwalda PL, de Vos P. Higher Chain Length Distribution in Debranched Type-3 Resistant Starches (RS3) Increases TLR Signaling and Supports Dendritic Cell Cytokine Production. Mol Nutr Food Res 2019; 63:e1801007. [PMID: 30412339 PMCID: PMC6767581 DOI: 10.1002/mnfr.201801007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Revised: 10/20/2018] [Indexed: 12/16/2022]
Abstract
SCOPE Resistant starches (RSs) are classically considered to elicit health benefits through fermentation. However, it is recently shown that RSs can also support health by direct immune interactions. Therefore, it has been hypothesized that the structural traits of RSs might impact the health benefits associated with their consumption. METHODS AND RESULTS Effects of crystallinity, molecular weight, and chain length distribution of RSs are determined on immune Toll-like receptors (TLRs), dendritic cells (DCs), and T-cell cytokines production. To this end, four type-3 RSs (RS3) are compared, namely Paselli WFR, JD150, debranched Etenia, and Amylose fraction V, which are extracted from potatoes and enzymatically modified. Dextrose equivalent seems to be the most important feature influencing immune signaling via activation of TLRs. TLR2 and TLR4 are most strongly stimulated. Especially Paselli WFR is a potent activator of multiple receptors. Moreover, the presence of amylose, even to residual levels, enhances DC and T-cell cytokine responses. Paselli WFR and Amylose fraction V influence T-cell polarization. CONCLUSIONS It has been shown here that chain length and particularly dextrose equivalent are critical features for immune activation. This knowledge might lead to tailoring and design of immune-active RS formulations.
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Affiliation(s)
- Alexia F.P. Lépine
- ImmunoendocrinologyDivision of Medical BiologyDepartment of Pathology and Medical BiologyUniversity of Groningen, University Medical Center GroningenHanzeplein 19700RBGroningenThe Netherlands
- Food and Biobased ResearchWageningen University and Research centerBornse Weilanden 96708WGWageningenThe Netherlands
| | - Roderick H. J. de Hilster
- ImmunoendocrinologyDivision of Medical BiologyDepartment of Pathology and Medical BiologyUniversity of Groningen, University Medical Center GroningenHanzeplein 19700RBGroningenThe Netherlands
| | - Hans Leemhuis
- AVEBE Innovation CenterP.O.Box 159640AAVeendamThe Netherlands
| | - Lizette Oudhuis
- AVEBE Innovation CenterP.O.Box 159640AAVeendamThe Netherlands
| | - Piet L. Buwalda
- AVEBE Innovation CenterP.O.Box 159640AAVeendamThe Netherlands
- Biobased Chemistry and TechnologyWageningen University and Research centerBornse Weilanden 96708WGWageningenThe Netherlands
| | - Paul de Vos
- ImmunoendocrinologyDivision of Medical BiologyDepartment of Pathology and Medical BiologyUniversity of Groningen, University Medical Center GroningenHanzeplein 19700RBGroningenThe Netherlands
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