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Herrera MG, Amundarain MJ, Dörfler PW, Dodero VI. The Celiac-Disease Superantigen Oligomerizes and Increases Permeability in an Enterocyte Cell Model. Angew Chem Int Ed Engl 2024; 63:e202317552. [PMID: 38497459 DOI: 10.1002/anie.202317552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 03/03/2024] [Accepted: 03/05/2024] [Indexed: 03/19/2024]
Abstract
Celiac disease (CeD) is an autoimmune disorder triggered by gluten proteins, affecting approximately 1 % of the global population. The 33-mer deamidated gliadin peptide (DGP) is a metabolically modified wheat-gluten superantigen for CeD. Here, we demonstrate that the 33-mer DGP spontaneously assembles into oligomers with a diameter of approximately 24 nm. The 33-mer DGP oligomers present two main secondary structural motifs-a major polyproline II helix and a minor β-sheet structure. Importantly, in the presence of 33-mer DGP oligomers, there is a statistically significant increase in the permeability in the gut epithelial cell model Caco-2, accompanied by the redistribution of zonula occludens-1, a master tight junction protein. These findings provide novel molecular and supramolecular insights into the impact of 33-mer DGP in CeD and highlight the relevance of gliadin peptide oligomerization.
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Affiliation(s)
- Maria G Herrera
- Department of Chemistry, Bielefeld University, Universitätsstr. 25, 33615, Bielefeld, Germany
- Department of Physiology and Molecular and Cellular Biology, Institute of Biosciences, Biotechnology and Translational Biology (iB3), Faculty of Exact and Natural Sciences, University of Buenos Aires, Buenos Aires, C1428EG, Argentina
| | - Maria J Amundarain
- Department of Chemistry, Bielefeld University, Universitätsstr. 25, 33615, Bielefeld, Germany
| | - Philipp W Dörfler
- Department of Chemistry, Bielefeld University, Universitätsstr. 25, 33615, Bielefeld, Germany
| | - Veronica I Dodero
- Department of Chemistry, Bielefeld University, Universitätsstr. 25, 33615, Bielefeld, Germany
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2
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Alcazar O, Chuang ST, Ren G, Ogihara M, Webb-Robertson BJM, Nakayasu ES, Buchwald P, Abdulreda MH. A Composite Biomarker Signature of Type 1 Diabetes Risk Identified via Augmentation of Parallel Multi-Omics Data from a Small Cohort. bioRxiv 2024:2024.02.09.579673. [PMID: 38405796 PMCID: PMC10888829 DOI: 10.1101/2024.02.09.579673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
Background Biomarkers of early pathogenesis of type 1 diabetes (T1D) are crucial to enable effective prevention measures in at-risk populations before significant damage occurs to their insulin producing beta-cell mass. We recently introduced the concept of integrated parallel multi-omics and employed a novel data augmentation approach which identified promising candidate biomarkers from a small cohort of high-risk T1D subjects. We now validate selected biomarkers to generate a potential composite signature of T1D risk. Methods Twelve candidate biomarkers, which were identified in the augmented data and selected based on their fold-change relative to healthy controls and cross-reference to proteomics data previously obtained in the expansive TEDDY and DAISY cohorts, were measured in the original samples by ELISA. Results All 12 biomarkers had established connections with lipid/lipoprotein metabolism, immune function, inflammation, and diabetes, but only 7 were found to be markedly changed in the high-risk subjects compared to the healthy controls: ApoC1 and PON1 were reduced while CETP, CD36, FGFR1, IGHM, PCSK9, SOD1, and VCAM1 were elevated. Conclusions Results further highlight the promise of our data augmentation approach in unmasking important patterns and pathologically significant features in parallel multi-omics datasets obtained from small sample cohorts to facilitate the identification of promising candidate T1D biomarkers for downstream validation. They also support the potential utility of a composite biomarker signature of T1D risk characterized by the changes in the above markers.
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Fløyel T, Funda D, Dodero VI, Haupt-Jorgensen M. Editorial: The gut-pancreas axis in type 1 diabetes - a focus on environmental factors. Front Endocrinol (Lausanne) 2023; 14:1270297. [PMID: 37654570 PMCID: PMC10466039 DOI: 10.3389/fendo.2023.1270297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 08/07/2023] [Indexed: 09/02/2023] Open
Affiliation(s)
- Tina Fløyel
- Translational Type 1 Diabetes Research, Clinical Research, Steno Diabetes Center Copenhagen, Herlev, Denmark
| | - David Funda
- Institute of Microbiology of the Czech Academy of Sciences, v.v.i., Prague, Czechia
| | - Veronica I. Dodero
- Department of Chemistry, Organic Chemistry III, Bielefeld University, Bielefeld, Germany
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4
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Aguilar EC, Fernandes-Braga W, Santos EA, Leocádio PCL, Dos Santos Aggum Capettini L, Orellano LAA, Campos PP, Lemos VS, Soares FLP, Navia-Pelaez JM, Alvarez-Leite JI. Gluten worsens non-alcoholic fatty liver disease by affecting lipogenesis and fatty acid oxidation in diet-induced obese apolipoprotein E-deficient mice. Mol Cell Biochem 2023:10.1007/s11010-023-04802-3. [PMID: 37402020 DOI: 10.1007/s11010-023-04802-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Accepted: 06/25/2023] [Indexed: 07/05/2023]
Abstract
Obesity is closely associated with non-alcoholic fatty liver disease (NAFLD), characterized by hepatic fat accumulation and hepatocyte injury. Preclinical studies have shown exacerbated weight gain associated with an obesogenic gluten-containing diet. However, whether gluten affects obesity-induced hepatic lipid accumulation still remains unclear. We hypothesized that gluten intake could affect fatty liver development in high-fat diet (HFD)-induced obese mice. Thus, we aimed to investigate the impact of gluten intake on NAFLD in HFD-induced obese mice. Male apolipoprotein E-deficient (Apoe-/-) mice were fed with a HFD containing (GD) or not (GFD) vital wheat gluten (4.5%) for 10 weeks. Blood and liver were collected for further analysis. We found that gluten exacerbated weight gain, hepatic fat deposition, and hyperglycemia without affecting the serum lipid profile. Livers of the GD group showed a larger area of fibrosis, associated with the expression of collagen and MMP9, and higher expression of apoptosis-related factors, p53, p21, and caspase-3. The expression of lipogenic factors, such as PPARγ and Acc1, was more elevated and factors related to beta-oxidation, such as PPARα and Cpt1, were lower in the GD group compared to the GFD. Further, gluten intake induced a more significant expression of Cd36, suggesting higher uptake of free fatty acids. Finally, we found lower protein expression of PGC1α followed by lower activation of AMPK. Our data show that gluten-containing high-fat diet exacerbated NAFLD by affecting lipogenesis and fatty acid oxidation in obese Apoe-/- mice through a mechanism involving lower activation of AMPK.
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Affiliation(s)
- Edenil Costa Aguilar
- Department of Biochemistry and Immunology, ICB - Federal University of Minas Gerais, Caixa Postal 486, Belo Horizonte, 30161-970, Brazil.
- Precision Immunology Institute at the Icahn School of Medicine at Mount Sinai, New York, NY, USA.
| | - Weslley Fernandes-Braga
- Department of Biochemistry and Immunology, ICB - Federal University of Minas Gerais, Caixa Postal 486, Belo Horizonte, 30161-970, Brazil
- Precision Immunology Institute at the Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Elandia Aparecida Santos
- Department of Biochemistry and Immunology, ICB - Federal University of Minas Gerais, Caixa Postal 486, Belo Horizonte, 30161-970, Brazil
| | - Paola Caroline Lacerda Leocádio
- Department of Biochemistry and Immunology, ICB - Federal University of Minas Gerais, Caixa Postal 486, Belo Horizonte, 30161-970, Brazil
| | | | | | - Paula Peixoto Campos
- Department of General Pathology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Virginia Soares Lemos
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | | | - Juliana Maria Navia-Pelaez
- Department of Pharmacology, Federal University of Minas Gerais, Belo Horizonte, Brazil
- Department of Medicine, University of California San Diego, San Diego, USA
| | - Jacqueline I Alvarez-Leite
- Department of Biochemistry and Immunology, ICB - Federal University of Minas Gerais, Caixa Postal 486, Belo Horizonte, 30161-970, Brazil
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Yadav S, Singh P. Advancement and application of novel cell-penetrating peptide in cancer management. 3 Biotech 2023; 13:234. [PMID: 37323859 PMCID: PMC10264343 DOI: 10.1007/s13205-023-03649-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 05/26/2023] [Indexed: 06/17/2023] Open
Abstract
Cell-penetrating peptides (CPPs) are small amino acid sequences with the potential to enter cell membranes. Along with nucleic acids, large proteins, and other chemical compounds, they can deliver several bioactive cargos inside cells. Numerous CPPs have been extracted from natural or synthetic materials since the discovery of the first CPP. In the past few decades, a significant variety of studies have shown the potential of CPPs to cure different diseases. The low toxicity in peptide compared to other drug delivery carriers is a significant benefit of CPP-based therapy, in addition to the high efficacy brought about by swift and effective delivery. A significant tendency for intracellular DNA delivery may also be observed when nanoparticles and the cell penetration peptide are combined. CPPs are frequently used to increase intracellular absorption of nucleic acid, and other therapeutic agents inside the cell. Due to long-term side effects and possible toxicity, its implementation is restricted. The use of cell-permeating peptides is a commonly used technique to increase their intracellular absorption. Additionally, CPPs have lately been sought for application in vivo, following their success in cellular studies. This review will go through the numerous CPPs, the chemical modifications that improve their cellular uptake, the various means for getting them across cell membranes, and the biological activity they acquire after being conjugate with specific chemicals.
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Affiliation(s)
- Shikha Yadav
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University, Plot No. 2, Sector 17-A, Yamuna Expressway, Gautam Budh Nagar, Greater Noida, Uttar Pradesh 201310 India
| | - Pratichi Singh
- Department of Biosciences, School of Basic and Applied Sciences, Galgotias University, Greater Noida, Uttar Pradesh India
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Eland I, Klieverik L, Mansour AA, Al-Toma A. Gluten-Free Diet in Co-Existent Celiac Disease and Type 1 Diabetes Mellitus: Is It Detrimental or Beneficial to Glycemic Control, Vascular Complications, and Quality of Life? Nutrients 2022; 15. [PMID: 36615856 DOI: 10.3390/nu15010199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 12/28/2022] [Accepted: 12/29/2022] [Indexed: 01/03/2023] Open
Abstract
Celiac disease (CeD) is associated with type 1 diabetes mellitus (T1DM), and both have the same genetic background. Most patients with T1DM who develop CeD are either asymptomatic or have mild CeD-related gastrointestinal symptoms. Therefore, children affected by T1DM should undergo screening for asymptomatic CeD. The aim of this review is to highlight the influence of a gluten-free diet (GFD) on glycemic control, growth rate, microvascular complications, and quality of life in patients with T1DM and CeD. PubMed, Google Scholar, Web of Science, and Cochrane Central databases were searched. Reports reviewed were those published from 1969 to 2022 that focused on the interplay of T1DM and CeD and examined the effect of diet on glycemic control, growth rate, and quality of life. The most challenging aspect for a child with T1DM and CeD is that most GFD foods have a high glycemic index, while low glycemic index foods are recommended for T1DM. Interestingly, dietary therapy for CeD could improve the elevated HbA1c levels. Avoiding gluten added to a diabetic dietary regimen in T1DM patients might impose practical limitations and lead to important restrictions in the lifestyle of a young patient. Consequently, non-adherence to GFD in patients with T1DM and CeD is common. GFD in patients with T1DM and CeD seems to lower the incidence of micro- and macrovascular complications, but this requires further investigation. It seems that adherence to GFD in young patients with T1DM and CeD leads to regular growth and a stable body mass index without any negative effect on HbA1c or insulin requirements. Furthermore, the lipid profile and quality of life seem to have improved with the introduction of GFD.
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Herrera MG, Amundarain MJ, Nicoletti F, Drechsler M, Costabel M, Gentili PL, Dodero VI. Thin-Plate Superstructures of the Immunogenic 33-mer Gliadin Peptide. Chembiochem 2022; 23:e202200552. [PMID: 36161684 PMCID: PMC9828358 DOI: 10.1002/cbic.202200552] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 09/23/2022] [Indexed: 02/03/2023]
Abstract
Gluten related-disorders have a prevalence of 1-5 % worldwide triggered by the ingestion of gluten proteins in wheat, rye, barley, and some oats. In wheat gluten, the most studied protein is gliadin, whose immunodominant 33-mer amino acid fragment remains after digestive proteolysis and accumulates in the gut mucosa. Here, we report the formation of 33-mer thin-plate superstructures using intrinsic tyrosine (Tyr) steady-state fluorescence anisotropy and cryo-TEM in combination with water tension measurements. Furthermore, we showed that fluorescence decay measurements of 33-mer intrinsic fluorophore Tyr provided information on the early stages of the formation of the thin-plate structures. Finally, conformational analysis of Tyr residues using minimalist models by molecular dynamic simulations (MD) demonstrated that changes in Tyr rotamer states depend on the oligomerization stage. Our findings further advance the understanding of the formation of the 33-mer gliadin peptide superstructures and their relation to health and disease.
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Affiliation(s)
- Maria Georgina Herrera
- Faculty of ChemistryOCIIIBielefeld UniversityUniversitätsstr. 2533615BielefeldGermany,Faculty of Exact and Natural SciencesInstitute of BiosciencesBiotechnology and Translational Biology (iB3)University of Buenos AiresIntendente Güiraldes 2160, Ciudad UniversitariaC1428EGABuenos AiresArgentina
| | - Maria Julia Amundarain
- Instituto de Física del Sur (IFISUR)Departamento de FísicaUniversidad Nacional del Sur (UNS)CONICET Av. L. N. Alem1253, B8000CPB -Bahía BlancaArgentina
| | - Franscesco Nicoletti
- Faculty of ChemistryOCIIIBielefeld UniversityUniversitätsstr. 2533615BielefeldGermany,Department of Chemistry, Biology, and BiotechnologyUniversità degli Studi di PerugiaVia Elce di Sotto 806123PerugiaItaly
| | - Marcus Drechsler
- Bavarian Polymer InstituteUniversity BayreuthUniversitaetsstr. 3095447BayreuthGermany
| | - Marcelo Costabel
- Instituto de Física del Sur (IFISUR)Departamento de FísicaUniversidad Nacional del Sur (UNS)CONICET Av. L. N. Alem1253, B8000CPB -Bahía BlancaArgentina
| | - Pier Luigi Gentili
- Department of Chemistry, Biology, and BiotechnologyUniversità degli Studi di PerugiaVia Elce di Sotto 806123PerugiaItaly
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Söderström H, Cervin M, Dereke J, Hillman M, Tiberg I, Norström F, Carlsson A. Does a gluten-free diet lead to better glycemic control in children with type 1 diabetes? Results from a feasibility study and recommendations for future trials. Contemp Clin Trials Commun 2022; 26:100893. [PMID: 35243123 PMCID: PMC8866053 DOI: 10.1016/j.conctc.2022.100893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 11/09/2021] [Accepted: 01/17/2022] [Indexed: 11/30/2022] Open
Affiliation(s)
- Hanna Söderström
- Department of Clinical Sciences, Pediatrics, Skåne University Hospital Lund, Lund University, Lund, Sweden
- Corresponding author.
| | - Matti Cervin
- Department of Clinical Sciences, Child and Adolescent Psychiatry, Lund University, Lund, Sweden
| | - Jonatan Dereke
- Department of Clinical Sciences, Diabetes Research Laboratory, Lund University, Lund, Sweden
| | - Magnus Hillman
- Department of Health Sciences, Lund University, Lund, Sweden
| | - Iren Tiberg
- Department of Health Sciences, Lund University, Lund, Sweden
| | - Fredrik Norström
- Department of Epidemiology and Global Health, Umeå University, Umeå, Sweden
| | - Annelie Carlsson
- Department of Clinical Sciences, Pediatrics, Skåne University Hospital Lund, Lund University, Lund, Sweden
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9
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Herrera MG, Dodero VI. Gliadin proteolytical resistant peptides: the interplay between structure and self-assembly in gluten-related disorders. Biophys Rev 2021; 13:1147-54. [PMID: 35047092 DOI: 10.1007/s12551-021-00856-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Accepted: 10/14/2021] [Indexed: 11/29/2022] Open
Abstract
In recent years, the evaluation of the structural properties of food has become of crucial importance in the understanding of food-related disorders. One of the most exciting systems is gliadin, a protein in wheat gluten, that plays a protagonist role in gluten-related disorders with a worldwide prevalence of 5%, including autoimmune celiac disease (CeD) (1%) and non-celiac wheat sensitivity (0.5–13%). It is accepted that gliadin is not fully digested by humans, producing large peptides that reach the gut mucosa. The gliadin peptides cross the lamina propria eliciting different immune responses in susceptible patients. Many clinical and biomedical efforts aim to diagnose and understand gluten-related disorders; meanwhile, the early stages of the inflammatory events remain elusive. Interestingly, although the primary sequence of many gliadin peptides is well known, it was only recently revealed the self-assembly capability of two pathogenic gliadin fragments and their connection to the early stage of diseases. This review is dedicated to the most relevant biophysical characterization of the complex gliadin digest and the two most studied gliadin fragments, the immunodominant 33-mer peptide and the toxic p31-43 in connection with inflammation and innate immune response. Here, we want to emphasize that combining different biophysical methods with cellular and in vivo models is of key importance to get an integrative understanding of a complex biological problem, as discussed here.
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Buschard K. The etiology and pathogenesis of type 1 diabetes - A personal, non-systematic review of possible causes, and interventions. Front Endocrinol (Lausanne) 2022; 13:876470. [PMID: 36093076 PMCID: PMC9452747 DOI: 10.3389/fendo.2022.876470] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 08/08/2022] [Indexed: 11/13/2022] Open
Abstract
In this review after a lifelong research career, my personal opinion on the development of type 1 diabetes (T1D) from its very start to clinical manifestation will be described. T1D is a disease of an increased intestinal permeability and a reduced pancreas volume. I am convinced that virus might be the initiator and that this virus could persist on strategically significant locations. Furthermore, intake of gluten is important both in foetal life and at later ages. Disturbances in sphingolipid metabolism may also be of crucial importance. During certain stages of T1D, T cells take over resulting in the ultimate destruction of beta cells, which manifests T1D as an autoimmune disease. Several preventive and early treatment strategies are mentioned. All together this review has more new theories than usually, and it might also be more speculative than ordinarily. But without new ideas and theories advancement is difficult, even though everything might not hold true during the continuous discovery of the etiology and pathogenesis of T1D.
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Rotondi Aufiero V, Di Stasio L, Maurano F, Accardo F, Ferranti P, Mamone G, Rossi M, Mazzarella G. Beneficial effects of a T. monococcum wheat cultivar on diabetes incidence evaluated in non-obese diabetic mice and after in vitro simulated gastroduodenal digestion. Int J Food Sci Nutr 2021; 73:327-335. [PMID: 34605730 DOI: 10.1080/09637486.2021.1984403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Wheat consumption can represent one of the nutritional factors involved in the onset of diabetes. We specifically investigated the potential diabetogenic effects of Hammurabi, a T. monococcum wheat cultivar, in non-obese diabetic (NOD) mice and analysed the levels of resistant starch in pasta manufactured with Hammurabi after in vitro gastroduodenal digestion. NOD mice were fed with Hammurabi, bread wheat or rice flour to evaluate diabetes incidence and insulitis score. An enzymatic method was applied to compare the content of resistant starch in Hammurabi pasta and durum wheat pasta (control). In NOD mice, the Hammurabi-based diet significantly delayed diabetes onset (p = 0.0042) and reduced insulitis score compared to rice or wheat-based diet. Furthermore, the resistant starch value following in vitro digestion of Hammurabi pasta was significantly higher (4.08%) than that of durum wheat pasta (2.28%). Taken together, these results highlighted the potential positive effects of the Hammurabi-based diet on diabetes incidence.
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Affiliation(s)
| | - Luigia Di Stasio
- National Research Council, Institute of Food Sciences, Avellino, Italy
| | - Francesco Maurano
- National Research Council, Institute of Food Sciences, Avellino, Italy
| | - Francesca Accardo
- Department of Agriculture, University of Naples Federico II, Portici, Italy
| | - Pasquale Ferranti
- Department of Agriculture, University of Naples Federico II, Portici, Italy
| | - Gianfranco Mamone
- National Research Council, Institute of Food Sciences, Avellino, Italy
| | - Mauro Rossi
- National Research Council, Institute of Food Sciences, Avellino, Italy
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Feng G, Han K, Li Y, Yang Q, Feng W, Wang J, Yang X. Undigestible Gliadin Peptide Nanoparticles Penetrate Mucus and Reduce Mucus Production Driven by Intestinal Epithelial Cell Damage. J Agric Food Chem 2021; 69:7979-7989. [PMID: 34251199 DOI: 10.1021/acs.jafc.1c02177] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Wheat protein is the most consumed plant protein in our diet, and there is an increased prevalence of wheat/gluten intolerance and adherence to a gluten-free diet in many countries. Despite the known immunodominant effect of undigested gliadin peptides responsible for gluten-related intolerance, it remains unclear if and how gliadin peptides self-assemble into ordered nanostructures during gastrointestinal digestion, as well as their biological impact on the mucus barrier function. In this study, we purified undigestible gliadin peptide nanoparticles (UGPNs) by ultracentrifugation and characterized their structural and physiochemical properties. The results demonstrate that the UGPNs are self-assembled nanostructures generated by cationic amino acids (Lys and Arg)-capped surfactant-like peptides (SLPs), mainly derived from γ-gliadin and α-gliadin. SLPs trigger the concentration-dependent self-assembly driven by β-sheet conformational transitions above their critical aggregation concentration (cac, ∼0.1 mg/mL). UGPNs can easily penetrate the mucus layer in Caco-2/HT29-MTX cocultures with a high Papp value (∼5.7 × 10-6 cm/s) and reduce the production and thickness of the mucus layer driven by intestinal epithelial cell damage. Isothermal titration calorimetry and Langmuir monolayer studies indicate that the self-assembled state of UGPNs significantly affects their binding to DPPC/DOPE lipid membrane models. These results highlight the relevance of the self-assembly of gliadin peptides as a trigger of mucosal inflammation-related wheat/gluten intolerance.
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Affiliation(s)
- Guangxin Feng
- Laboratory of Food Proteins and Colloids, School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou 510640, China
| | - Kaining Han
- Laboratory of Food Proteins and Colloids, School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou 510640, China
| | - Yanlei Li
- Laboratory of Food Proteins and Colloids, School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou 510640, China
| | - Qian Yang
- Laboratory of Food Proteins and Colloids, School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou 510640, China
| | - Weiting Feng
- Laboratory of Food Proteins and Colloids, School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou 510640, China
| | - Jinmei Wang
- Laboratory of Food Proteins and Colloids, School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou 510640, China
| | - Xiaoquan Yang
- Laboratory of Food Proteins and Colloids, School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou 510640, China
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Di Liberto D, Carlisi D, D’Anneo A, Emanuele S, Giuliano M, De Blasio A, Calvaruso G, Lauricella M. Gluten Free Diet for the Management of Non Celiac Diseases: The Two Sides of the Coin. Healthcare (Basel) 2020; 8:healthcare8040400. [PMID: 33066519 PMCID: PMC7712796 DOI: 10.3390/healthcare8040400] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 10/07/2020] [Accepted: 10/09/2020] [Indexed: 12/12/2022] Open
Abstract
A lifelong adherence to a gluten-free (GF) diet is currently the only treatment for Celiac disease (CD), an autoimmune disorder that arises after gluten ingestion in individuals who are genetically predisposed. The gluten intake exerts toxic effects through several pathways involving gut barrier integrity, intestinal microbiota composition and immune system stimulation. However, despite the great benefit of GF diet for CD patients, its use has been debated. Indeed, individuals who adopt this diet regime may be at risk of nutrient deficiencies. Emerging evidence supports a beneficial effect of a GF diet also for other pathological conditions, including gluten-related disorders (GRD) often associated to CD, such as Non celiac gluten sensitivity (NCGS) and Dermatitis Herpetiforme (DH) as well as Irritable bowel syndrome (IBS) and Diabetes. This suggests a pathogenic role of gluten in these conditions. Despite the growing popularity of GF diet among consumers, to date, there are limited evidences supporting its use for the management of non-celiac diseases. Therefore, in this review, we discuss whether the GF diet could really improve the general quality of life of patients with GRD and non-GRD conditions, keeping in mind its sensorial limitations and nutritional inadequacies. In addition, we discuss the current motivations, leading to the use of a GF diet, despite the inferior quality of GF products respect to those containing gluten.
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Affiliation(s)
- Diana Di Liberto
- Department of Biomedicine, Neurosciences and Advanced Diagnostics (BIND), CLADIBIOR, University of Palermo, 90127 Palermo, Italy
- Correspondence: (D.D.L.); (A.D.); Tel.: +39-09123865854 (D.D.L.); +39-09123890650 (A.D.)
| | - Daniela Carlisi
- Department of Biomedicine, Neurosciences and Advanced Diagnostics (BIND), Institute of Biochemistry, University of Palermo, 90127 Palermo, Italy; (D.C.); (S.E.); (M.L.)
| | - Antonella D’Anneo
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), Laboratory of Biochemistry, University of Palermo, 90127 Palermo, Italy; (M.G.); (A.D.B.); (G.C.)
- Correspondence: (D.D.L.); (A.D.); Tel.: +39-09123865854 (D.D.L.); +39-09123890650 (A.D.)
| | - Sonia Emanuele
- Department of Biomedicine, Neurosciences and Advanced Diagnostics (BIND), Institute of Biochemistry, University of Palermo, 90127 Palermo, Italy; (D.C.); (S.E.); (M.L.)
| | - Michela Giuliano
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), Laboratory of Biochemistry, University of Palermo, 90127 Palermo, Italy; (M.G.); (A.D.B.); (G.C.)
| | - Anna De Blasio
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), Laboratory of Biochemistry, University of Palermo, 90127 Palermo, Italy; (M.G.); (A.D.B.); (G.C.)
| | - Giuseppe Calvaruso
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), Laboratory of Biochemistry, University of Palermo, 90127 Palermo, Italy; (M.G.); (A.D.B.); (G.C.)
| | - Marianna Lauricella
- Department of Biomedicine, Neurosciences and Advanced Diagnostics (BIND), Institute of Biochemistry, University of Palermo, 90127 Palermo, Italy; (D.C.); (S.E.); (M.L.)
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Olivares M, Rodriguez J, Pötgens SA, Neyrinck AM, Cani PD, Bindels LB, Delzenne NM. The Janus Face of Cereals: Wheat-Derived Prebiotics Counteract the Detrimental Effect of Gluten on Metabolic Homeostasis in Mice Fed a High-Fat/High-Sucrose Diet. Mol Nutr Food Res 2019; 63:e1900632. [PMID: 31608562 PMCID: PMC7003472 DOI: 10.1002/mnfr.201900632] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 10/07/2019] [Indexed: 12/13/2022]
Abstract
SCOPE Cereals are important sources of carbohydrates, but also contain nutrients that could impact adiposity. The contribution of gluten to obesity and the effects of prebiotics-arabinoxylo-oligosaccharides (AXOS) and fructo-oligosaccharides (FOS)-that can be extracted from gluten-containing cereals are analyzed. METHODS AND RESULTS Mice are fed a control diet, Western diet (WD, consisting of high fat/high sucrose), or WD with 5% gluten. Prebiotics are tested in the WD with gluten. Gluten does not increase body weight and has a minor effect on ileal inflammation. Gluten decreases the expression of browning markers in the fat and increases the triglycerides synthesis in the muscle. AXOS decreases body weight and adiposity in fat pads muscle and liver. AXOS promotes gluten cleavage by the induction of prolyl endopeptidase that is translated into a reduction of gluten immunogenic peptides. Gluten has minor effects on cecal microbiota composition, whereas prebiotics increased Bifidobacterium, Butyricicoccus, Prevotella, and Parasutterella, which are all negatively correlated to the cecal content of gluten peptides. CONCLUSION While gluten may affect metabolic homeostasis, these effects are lessened when gluten is consumed along with cereal-derived fibers. If confirmed in humans, the authors bring new arguments to eat fiber-rich cereals to promote a healthy diet.
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Affiliation(s)
- Marta Olivares
- Metabolism and Nutrition Research Group, Louvain Drug Research InstituteUniversité catholique de Louvain (UCLouvain)B‐1200BrusselsBelgium
| | - Julie Rodriguez
- Metabolism and Nutrition Research Group, Louvain Drug Research InstituteUniversité catholique de Louvain (UCLouvain)B‐1200BrusselsBelgium
| | - Sarah A. Pötgens
- Metabolism and Nutrition Research Group, Louvain Drug Research InstituteUniversité catholique de Louvain (UCLouvain)B‐1200BrusselsBelgium
| | - Audrey M. Neyrinck
- Metabolism and Nutrition Research Group, Louvain Drug Research InstituteUniversité catholique de Louvain (UCLouvain)B‐1200BrusselsBelgium
| | - Patrice D. Cani
- Metabolism and Nutrition Research Group, Louvain Drug Research InstituteUniversité catholique de Louvain (UCLouvain)B‐1200BrusselsBelgium
- Walloon Excellence in Life sciences and BIOtechnology (WELBIO)Louvain Drug Research InstituteUCLouvainB‐1200BrusselsBelgium
| | - Laure B. Bindels
- Metabolism and Nutrition Research Group, Louvain Drug Research InstituteUniversité catholique de Louvain (UCLouvain)B‐1200BrusselsBelgium
| | - Nathalie M. Delzenne
- Metabolism and Nutrition Research Group, Louvain Drug Research InstituteUniversité catholique de Louvain (UCLouvain)B‐1200BrusselsBelgium
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15
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Cebolla Á, Moreno MDL, Coto L, Sousa C. Gluten Immunogenic Peptides as Standard for the Evaluation of Potential Harmful Prolamin Content in Food and Human Specimen. Nutrients 2018; 10:E1927. [PMID: 30563126 PMCID: PMC6316305 DOI: 10.3390/nu10121927] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 11/23/2018] [Accepted: 11/29/2018] [Indexed: 12/11/2022] Open
Abstract
Gluten is a complex mixture of storage proteins in cereals like wheat, barley, and rye. Prolamins are the main components of gluten. Their high content in proline and glutamine makes them water-insoluble and difficult to digest in the gastrointestinal tract. Partial digestion generates peptide sequences which trigger immune responses in celiac and gluten-sensitive patients. Gluten detection in food is challenging because of the diversity, in various food matrices, of protein proportions or modifications and the huge number of immunogenic sequences with differential potential immunoactivity. Attempts to develop standard reference materials have been unsuccessful. Recent studies have reported the detection of a limited number of dominant Gluten Immunogenic Peptides (GIP) that share similarities to epitopes presented in the α-gliadin 33-mer, which showed to be highly proteolytic resistant and is considered to be the most immunodominant peptide within gluten in celiac disease (CD). GIP were detectable and quantifiable in very different kind of difficult to analyze food, revealing the potential immunogenicity by detecting T-cell activity of celiac patients. But GIP were also found in stool and urine of celiac patients on a supposedly gluten-free diet (GFD), showing the capacity to resist and be absorbed and excreted from the body, providing the first simple and objective means to assess adherence to the GFD. Methods to specifically and sensitively detect the most active GIP in food and biological fluids are rational candidates may use similar analytical standard references for determination of the immunopathological risk of gluten exposure in gluten-related diseases.
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Affiliation(s)
| | - María de Lourdes Moreno
- Facultad de Farmacia, Departamento de Microbiología y Parasitología, Universidad de Sevilla, 41012 Sevilla, Spain.
| | | | - Carolina Sousa
- Facultad de Farmacia, Departamento de Microbiología y Parasitología, Universidad de Sevilla, 41012 Sevilla, Spain.
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16
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Haupt-Jorgensen M, Holm LJ, Josefsen K, Buschard K. Possible Prevention of Diabetes with a Gluten-Free Diet. Nutrients 2018; 10:E1746. [PMID: 30428550 DOI: 10.3390/nu10111746] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 11/06/2018] [Accepted: 11/07/2018] [Indexed: 02/07/2023] Open
Abstract
Gluten seems a potentially important determinant in type 1 diabetes (T1D) and type 2 diabetes (T2D). Intake of gluten, a major component of wheat, rye, and barley, affects the microbiota and increases the intestinal permeability. Moreover, studies have demonstrated that gluten peptides, after crossing the intestinal barrier, lead to a more inflammatory milieu. Gluten peptides enter the pancreas where they affect the morphology and might induce beta-cell stress by enhancing glucose- and palmitate-stimulated insulin secretion. Interestingly, animal studies and a human study have demonstrated that a gluten-free (GF) diet during pregnancy reduces the risk of T1D. Evidence regarding the role of a GF diet in T2D is less clear. Some studies have linked intake of a GF diet to reduced obesity and T2D and suggested a role in reducing leptin- and insulin-resistance and increasing beta-cell volume. The current knowledge indicates that gluten, among many environmental factors, may be an aetiopathogenic factors for development of T1D and T2D. However, human intervention trials are needed to confirm this and the proposed mechanisms.
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Antvorskov JC, Halldorsson TI, Josefsen K, Svensson J, Granström C, Roep BO, Olesen TH, Hrolfsdottir L, Buschard K, Olsen SF. Association between maternal gluten intake and type 1 diabetes in offspring: national prospective cohort study in Denmark. BMJ 2018; 362:k3547. [PMID: 30232082 PMCID: PMC6283375 DOI: 10.1136/bmj.k3547] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
OBJECTIVE To examine the association between prenatal gluten exposure and offspring risk of type 1 diabetes in humans. DESIGN National prospective cohort study. SETTING National health information registries in Denmark. PARTICIPANTS Pregnant Danish women enrolled into the Danish National Birth Cohort, between January 1996 and October 2002, MAIN OUTCOME MEASURES: Maternal gluten intake, based on maternal consumption of gluten containing foods, was reported in a 360 item food frequency questionnaire at week 25 of pregnancy. Information on type 1 diabetes occurrence in the participants' children, from 1 January 1996 to 31 May 2016, were obtained through registry linkage to the Danish Registry of Childhood and Adolescent Diabetes. RESULTS The study comprised 101 042 pregnancies in 91 745 women, of whom 70 188 filled out the food frequency questionnaire. After correcting for multiple pregnancies, pregnancies ending in abortions, stillbirths, lack of information regarding the pregnancy, and pregnancies with implausibly high or low energy intake, 67 565 pregnancies (63 529 women) were included. The average gluten intake was 13.0 g/day, ranging from less than 7 g/day to more than 20 g/day. The incidence of type 1 diabetes among children in the cohort was 0.37% (n=247) with a mean follow-up period of 15.6 years (standard deviation 1.4). Risk of type 1 diabetes in offspring increased proportionally with maternal gluten intake during pregnancy (adjusted hazard ratio 1.31 (95% confidence interval 1.001 to 1.72) per 10 g/day increase of gluten). Women with the highest gluten intake versus those with the lowest gluten intake (≥20 v <7 g/day) had double the risk of type 1 diabetes development in their offspring (adjusted hazard ratio 2.00 (95% confidence interval 1.02 to 4.00)). CONCLUSIONS High gluten intake by mothers during pregnancy could increase the risk of their children developing type 1 diabetes. However, confirmation of these findings are warranted, preferably in an intervention setting.
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Affiliation(s)
- Julie C Antvorskov
- Bartholin Institute, Rigshospitalet, Ole Måløes Vej 5, 2200 Copenhagen K, Denmark
| | - Thorhallur I Halldorsson
- Centre for Foetal Programming, Department of Epidemiology Research, Statens Serum Institute, Copenhagen, Denmark
- Unit for Nutrition Research, Landspitali University Hospital, Reykjavik, Iceland
- Faculty of Food Science and Nutrition, University of Iceland, Reykjavik, Iceland
| | - Knud Josefsen
- Bartholin Institute, Rigshospitalet, Ole Måløes Vej 5, 2200 Copenhagen K, Denmark
| | - Jannet Svensson
- Copenhagen Diabetes Research Center (CPH-DIRECT), Department of Children and Adolescents, Copenhagen University Hospital Herlev, Herlev, Denmark
| | - Charlotta Granström
- Centre for Foetal Programming, Department of Epidemiology Research, Statens Serum Institute, Copenhagen, Denmark
| | - Bart O Roep
- Department of Diabetes Immunology, Diabetes and Metabolism Research Institute at the Beckman Diabetes Research Institute, City of Hope, Duarte, CA, USA
- Departments of Immunohematology and Blood Transfusion, Leiden University Medical Centre, Leiden, Netherlands
| | - Trine H Olesen
- Centre for Foetal Programming, Department of Epidemiology Research, Statens Serum Institute, Copenhagen, Denmark
| | - Laufey Hrolfsdottir
- Department of Education, Science, and Quality, Akureyri Hospital, Akureyri, Iceland
| | - Karsten Buschard
- Bartholin Institute, Rigshospitalet, Ole Måløes Vej 5, 2200 Copenhagen K, Denmark
| | - Sjudur F Olsen
- Centre for Foetal Programming, Department of Epidemiology Research, Statens Serum Institute, Copenhagen, Denmark
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA
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Verdu EF, Danska JS. Common ground: shared risk factors for type 1 diabetes and celiac disease. Nat Immunol 2018; 19:685-95. [DOI: 10.1038/s41590-018-0130-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Accepted: 04/27/2018] [Indexed: 02/07/2023]
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19
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Herrera MG, Pizzuto M, Lonez C, Rott K, Hütten A, Sewald N, Ruysschaert JM, Dodero VI. Large supramolecular structures of 33-mer gliadin peptide activate toll-like receptors in macrophages. Nanomedicine: Nanotechnology, Biology and Medicine 2018; 14:1417-1427. [DOI: 10.1016/j.nano.2018.04.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 03/23/2018] [Accepted: 04/16/2018] [Indexed: 02/08/2023]
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20
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Haupt-Jorgensen M, Larsen J, Josefsen K, Jørgensen TZ, Antvorskov JC, Hansen AK, Buschard K. Gluten-free diet during pregnancy alleviates signs of diabetes and celiac disease in NOD mouse offspring. Diabetes Metab Res Rev 2018; 34:e2987. [PMID: 29392873 DOI: 10.1002/dmrr.2987] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 01/08/2018] [Accepted: 01/22/2018] [Indexed: 01/23/2023]
Abstract
BACKGROUND Gluten-free (GF) diet during pregnancy ameliorates autoimmune diabetes in nonobese diabetic (NOD) mouse offspring. Due to comorbidity of celiac disease in type 1 diabetes, we hypothesized that GF diet in utero alleviates the humoral and histopathological signs of celiac disease in NOD mice. We aimed to establish the mechanisms behind the diabetes-protective effect of GF diet in utero. METHODS Breeding pairs of NOD mice were fed a GF or gluten-containing standard (STD) diet until parturition. The offspring were nursed by mothers on STD diet and continued on this diet until ages 4 and 13 weeks. Analyses of serum antitissue transglutaminase (anti-tTG) intestine and islet histology, islet transglutaminase (TG) activity, and cytokine expression in T cells from lymphoid organs were performed. RESULTS GF versus STD diet in utero led to reduced serum anti-tTG titre and increased villus-to-crypt ratio at both ages. Insulitis along with systemic and local inflammation were decreased, but islet TG activity was unchanged in 13-week-old GF mice. These mice had unchanged beta-cell volumes, but increased islet numbers throughout the prediabetic period. CONCLUSIONS Collectively, GF diet administered during pregnancy improves signs of celiac disease and autoimmune diabetes in the offspring. The diabetes-ameliorative effect of GF diet in utero is followed by dampening of inflammation, unchanged beta-cell volume, but increased islet numbers.
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Affiliation(s)
| | - Jesper Larsen
- The Bartholin Institute, Rigshospitalet, Copenhagen, Denmark
| | - Knud Josefsen
- The Bartholin Institute, Rigshospitalet, Copenhagen, Denmark
| | | | | | - Axel K Hansen
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark
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Utami RA, Hakiki A, Asyarie S, Retnoningrum DS. Gliadin Peptide Facilitates FITC Dextran Transport across the Non Everted Gut Sac of Rat Small Intestine. Sci Pharm 2018; 86:E13. [PMID: 29642636 DOI: 10.3390/scipharm86020013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 03/17/2018] [Accepted: 04/03/2018] [Indexed: 12/28/2022] Open
Abstract
Superoxide dismutase (SOD) is an antioxidant protein. When administered orally, it has low bioavailability due to its low permeation. In a previous study we fused gliadin peptide P51 (LGQQQPFPPQQPYPQPQPF) and gliadin peptide P61 (QQPYPQPQPF) with SOD Citrus limon (SOD_Cl), namely GliSOD_P51 and GliSOD_P61 to increase permeation of SOD_Cl through intestine. In this work, the permeation of fluorescein isothiocyanate (FITC)-Dextran 10 kDa, FD10 and 40 kDa, FD40 as paracellular transport markers across excised rat intestinal wall was investigated with the presence of GliSOD_P51 and GliSOD_P61. A permeability study was performed using non-everted rat intestine by incubating FD10 or FD40 with SOD_Cl, and GliSOD_P61. The presence of SOD_Cl, GliSOD_P51 or GliSOD_P61 inside intestine (apical) and outside intestine (basolateral) was analyzed by protein electrophoresis. The concentration of FD that penetrated to the basolateral solution was analyzed by spectrofluorometry. Sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) analysis revealed the presence of GliSOD_P51 and GliSOD_P61 but not SOD_Cl in basolateral compartment. The percentage of FD10 but not FD40 and SOD_Cl that penetrated to the basolateral solution significantly increased with the presence of gliadin in GliSOD_P51 and GliSOD_P61. GliSOD_P51 and GliSOD_P61 are able to penetrate the rat intestinal epithelial membrane and the gliadin peptides facilitate FD10 to penetrate the epithelial.
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22
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Abstract
Gluten‐related disorders are a complex group of diseases that involve the activation of the immune system triggered by the ingestion of gluten. Among these, celiac disease, with a prevalence of 1 %, is the most investigated, but recently, a new pathology, named nonceliac gluten sensitivity, was reported with a general prevalence of 7 %. Finally, there other less‐prevalent gluten‐related diseases such as wheat allergy, gluten ataxia, and dermatitis herpetiformis (with an overall prevalence of less than 0.1 %). As mentioned, the common molecular trigger is gluten, a complex mixture of storage proteins present in wheat, barley, and a variety of oats that are not fully degraded by humans. The most‐studied protein related to disease is gliadin, present in wheat, which possesses in its sequence many pathological fragments. Despite a lot of effort to treat these disorders, the only effective method is a long‐life gluten‐free diet. This Review summarizes the actual knowledge of gluten‐related disorders from a translational chemistry point of view. We discuss what is currently known from the literature about the interaction of gluten with the gut and the critical host responses it evokes and, finally, connect them to our current and novel molecular understanding of the supramolecular organization of gliadin and the 33‐mer gliadin peptide fragment under physiological conditions.
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Affiliation(s)
- Karen M Lammers
- Laboratory Immunogenetics, Department of Medical Microbiology and Infection Control VU University Medical Center 1081 Amsterdam Netherlands
| | - Maria G Herrera
- Faculty of Pharmacy and Biochemistry Institute of biological chemistry and Physicochemical CONICET-University of Buenos Aires Junín 956 C1113AAD Buenos Aires Argentina
| | - Veronica I Dodero
- Department of Chemistry, Organic Chemistry III Bielefeld University Universitätsstraße 25 33615 Bielefeld Germany
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Bruun SW, Josefsen K, Tanassi JT, Marek A, Pedersen MHF, Sidenius U, Haupt-Jorgensen M, Antvorskov JC, Larsen J, Heegaard NH, Buschard K. Corrigendum to "Large Gliadin Peptides Detected in the Pancreas of NOD and Healthy Mice following Oral Administration". J Diabetes Res 2017; 2017:9709704. [PMID: 28386569 PMCID: PMC5366189 DOI: 10.1155/2017/9709704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 01/05/2017] [Indexed: 11/17/2022] Open
Abstract
[This corrects the article DOI: 10.1155/2016/2424306.].
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Affiliation(s)
| | - Knud Josefsen
- The Bartholin Institute, Rigshospitalet, Copenhagen N, Denmark
- *Knud Josefsen:
| | - Julia T. Tanassi
- Clinical Biochemistry, Immunology & Genetics, Statens Serum Institut, Copenhagen S, Denmark
| | - Aleš Marek
- The Hevesy Laboratory, DTU Nutech, Technical University of Denmark, Roskilde, Denmark
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Prague 6, Czech Republic
| | - Martin H. F. Pedersen
- The Hevesy Laboratory, DTU Nutech, Technical University of Denmark, Roskilde, Denmark
| | - Ulrik Sidenius
- Enzyme Purification and Characterization, Novozymes A/S, Bagsværd, Denmark
| | | | | | - Jesper Larsen
- The Bartholin Institute, Rigshospitalet, Copenhagen N, Denmark
| | - Niels H. Heegaard
- Clinical Biochemistry, Immunology & Genetics, Statens Serum Institut, Copenhagen S, Denmark
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