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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] [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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Huang J, Xue S, Xie YQ, Teixeira AP, Fussenegger M. Ultrashort-Peptide-Responsive Gene Switches for Regulation of Therapeutic Protein Expression in Mammalian Cells. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2309411. [PMID: 38741284 DOI: 10.1002/advs.202309411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 03/04/2024] [Indexed: 05/16/2024]
Abstract
Despite the array of mammalian transgene switches available for regulating therapeutic protein expression in response to small molecules or physical stimuli, issues remain, including cytotoxicity of chemical inducers and limited biocompatibility of physical cues. This study introduces gene switches driven by short peptides comprising eight or fewer amino acid residues. Utilizing a competence regulator (ComR) and sigma factor X-inducing peptide (XIP) from Streptococcus vestibularis as the receptor and inducer, respectively, this study develops two strategies for a peptide-activated transgene control system. The first strategy involves fusing ComR with a transactivation domain and utilizes ComR-dependent synthetic promoters to drive expression of the gene-of-interest, activated by XIP, thereby confirming its membrane penetrability and intracellular functionality. The second strategy features an orthogonal synthetic receptor exposing ComR extracellularly (ComREXTRA), greatly increasing sensitivity with exceptional responsiveness to short peptides. In a proof-of-concept study, peptides are administered to type-1 diabetic mice with microencapsulated engineered human cells expressing ComREXTRA for control of insulin expression, restoring normoglycemia. It is envisioned that this system will encourage the development of short peptide drugs and promote the introduction of non-toxic, orthogonal, and highly biocompatible personalized biopharmaceuticals for gene- and cell-based therapies.
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Affiliation(s)
- Jinbo Huang
- Department of Biosystems Science and Engineering, ETH Zurich, Klingelbergstrasse 48, Basel, CH-4056, Switzerland
| | - Shuai Xue
- Department of Biosystems Science and Engineering, ETH Zurich, Klingelbergstrasse 48, Basel, CH-4056, Switzerland
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China
| | - Yu-Qing Xie
- Department of Biosystems Science and Engineering, ETH Zurich, Klingelbergstrasse 48, Basel, CH-4056, Switzerland
| | - Ana Palma Teixeira
- Department of Biosystems Science and Engineering, ETH Zurich, Klingelbergstrasse 48, Basel, CH-4056, Switzerland
| | - Martin Fussenegger
- Department of Biosystems Science and Engineering, ETH Zurich, Klingelbergstrasse 48, Basel, CH-4056, Switzerland
- Faculty of Science, University of Basel, Klingelbergstrasse 48, Basel, CH-4056, Switzerland
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Bailey RL, Stover PJ. Precision Nutrition: The Hype Is Exceeding the Science and Evidentiary Standards Needed to Inform Public Health Recommendations for Prevention of Chronic Disease. Annu Rev Nutr 2023; 43:385-407. [PMID: 37603433 PMCID: PMC11015823 DOI: 10.1146/annurev-nutr-061021-025153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Abstract
As dietary guidance for populations shifts from preventing deficiency disorders to chronic disease risk reduction, the biology supporting such guidance becomes more complex due to the multifactorial risk profile of disease and inherent population heterogeneity in the diet-disease relationship. Diet is a primary driver of chronic disease risk, and population-based guidance should account for individual responses. Cascading effects on evidentiary standards for population-based guidance are not straightforward. Precision remains a consideration for dietary guidance to prevent deficiency through the identification of population subgroups with unique nutritional needs. Reducing chronic disease through diet requires greater precision in (a) establishing essential nutrient needs throughout the life cycle in both health and disease; (b) considering effects of nutrients and other food substances on metabolic, immunological, inflammatory, and other physiological responses supporting healthy aging; and (c) considering healthy eating behaviors. Herein we provide a template for guiding population-based eating recommendations for reducing chronic diseases in heterogenous populations.
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Affiliation(s)
- Regan L Bailey
- Institute for Advancing Health through Agriculture and Department of Nutrition Science, Texas A&M University, College Station, Texas, USA;
| | - Patrick J Stover
- Institute for Advancing Health through Agriculture and Department of Nutrition Science, Texas A&M University, College Station, Texas, USA;
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Furone F, Bellomo C, Carpinelli M, Nicoletti M, Hewa-Munasinghege FN, Mordaa M, Mandile R, Barone MV, Nanayakkara M. The protective role of Lactobacillus rhamnosus GG postbiotic on the alteration of autophagy and inflammation pathways induced by gliadin in intestinal models. Front Med (Lausanne) 2023; 10:1085578. [PMID: 37215707 PMCID: PMC10192745 DOI: 10.3389/fmed.2023.1085578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 03/21/2023] [Indexed: 05/24/2023] Open
Abstract
Celiac disease (CD) is an autoimmune enteropathy caused by an abnormal immune response to gliadin peptides in genetically predisposed individuals. For people with CD, the only available therapy thus far is the lifelong necessity for a gluten-free diet (GFD). Innovative therapies include probiotics and postbiotics as dietary supplements, both of which may benefit the host. Therefore, the present study aimed to investigate the possible beneficial effects of the postbiotic Lactobacillus rhamnosus GG (LGG) in preventing the effects induced by indigested gliadin peptides on the intestinal epithelium. In this study, these effects on the mTOR pathway, autophagic function, and inflammation have been evaluated. Furthermore, in this study, we stimulated the Caco-2 cells with the undigested gliadin peptide (P31-43) and with the crude gliadin peptic-tryptic peptides (PTG) and pretreated the samples with LGG postbiotics (ATCC 53103) (1 × 108). In this study, the effects induced by gliadin before and after pretreatment have also been investigated. The phosphorylation levels of mTOR, p70S6K, and p4EBP-1 were increased after treatment with PTG and P31-43, indicating that the intestinal epithelial cells responded to the gliadin peptides by activating the mTOR pathway. Moreover, in this study, an increase in the phosphorylation of NF-κβ was observed. Pretreatment with LGG postbiotic prevented both the activation of the mTOR pathway and the NF-κβ phosphorylation. In addition, P31-43 reduced LC3II staining, and the postbiotic treatment was able to prevent this reduction. Subsequently, to evaluate the inflammation in a more complex intestinal model, the intestinal organoids derived from celiac disease patient biopsies (GCD-CD) and controls (CTR) were cultured. Stimulation with peptide 31-43 in the CD intestinal organoids induced NF-κβ activation, and pretreatment with LGG postbiotic could prevent it. These data showed that the LGG postbiotic can prevent the P31-43-mediated increase in inflammation in both Caco-2 cells and in intestinal organoids derived from CD patients.
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Affiliation(s)
- Francesca Furone
- Department of Translational Medical Science (Section of Paediatrics), University of Naples Federico II, Naples, Italy
| | - Claudia Bellomo
- Department of Translational Medical Science (Section of Paediatrics), University of Naples Federico II, Naples, Italy
| | - Martina Carpinelli
- Department of Translational Medical Science (Section of Paediatrics), University of Naples Federico II, Naples, Italy
| | - Martina Nicoletti
- Department of Translational Medical Science (Section of Paediatrics), University of Naples Federico II, Naples, Italy
| | | | - Majed Mordaa
- Department of Translational Medical Science (Section of Paediatrics), University of Naples Federico II, Naples, Italy
| | - Roberta Mandile
- Department of Translational Medical Sciences, School of Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - Maria Vittoria Barone
- Department of Translational Medical Science (Section of Paediatrics), University of Naples Federico II, Naples, Italy
- European Laboratory for the Investigation of Food Induced Diseases (ELFID), University of Naples Federico II, Naples, Italy
| | - Merlin Nanayakkara
- Department of Translational Medical Science (Section of Paediatrics), University of Naples Federico II, Naples, Italy
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Pauli JR, Muñoz VR, Vieira RFL, Nakandakari SCBR, Macêdo APA, de Lima RD, Antunes GC, Simabuco FM, da Silva ASR, de Moura LP, Ropelle ER, Cintra DE, Mekary RA, Zaghloul I. Exercise training restores weight gain and attenuates hepatic inflammation in a rat model of non-celiac gluten sensitivity. J Cell Biochem 2023; 124:520-532. [PMID: 36791261 DOI: 10.1002/jcb.30387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 12/02/2022] [Accepted: 02/03/2023] [Indexed: 02/17/2023]
Abstract
Gluten intolerance is associated with several disorders in the body. Although research has grown in recent years, the understanding of its impact on different tissues and the effects of physical exercise in mitigating health problems in the condition of gluten intolerance are still limited. Therefore, our objective was to test whether gliadin would affect metabolism and inflammation in liver tissue and whether aerobic physical exercise would mitigate the negative impacts of gliadin administration in rodents. Wistar rats were divided into exercised gliadin, gliadin, and control groups. Gliadin was administered by gavage from birth to 60 days of age. The rats in the exercised gliadin group performed an aerobic running exercise training protocol for 15 days. At the end of the experiments, physiological, histological, and molecular analyzes were performed in the study. Compared to the control group, the gliadin group had impaired weight gain and increased gluconeogenesis, lipogenesis, and inflammatory biomarkers in the liver. On the other hand, compared to the gliadin group, animals in the exercise-gliadin group had a recovery in body weight, improved insulin sensitivity, and a reduction in some gluconeogenesis, lipogenesis, and inflammatory biomarkers in the liver. In conclusion, our results revealed that the administration of gliadin from birth impaired weight gain and induced an increase in hepatic inflammatory cytokines, which was associated with an impairment of glycemic homeostasis in the liver, all of which were attenuated by adding aerobic exercise training in the gliadin group.
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Affiliation(s)
- José R Pauli
- Laboratory of Molecular Biology of Exercise, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil.,OCRC-Obesity and Comorbidities Research Center, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Vitor R Muñoz
- Laboratory of Molecular Biology of Exercise, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Renan Fudoli Lins Vieira
- Laboratory of Molecular Biology of Exercise, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Susana C B R Nakandakari
- Laboratory of Nutritional Genomics, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Ana Paula Azevêdo Macêdo
- Laboratory of Molecular Biology of Exercise, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Robson Damasceno de Lima
- Laboratory of Molecular Biology of Exercise, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Gabriel Calheiros Antunes
- Laboratory of Molecular Biology of Exercise, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Fernando M Simabuco
- Multidisciplinary Laboratory of Food and Health (LabMAS), School of Applied Sciences (FCA), University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Adelino Sanchez Ramos da Silva
- Postgraduate Program in Rehabilitation and Functional Performance, Ribeirão Preto Medical School, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil.,School of Physical Education and Sport of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | - Leandro P de Moura
- Laboratory of Molecular Biology of Exercise, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil.,OCRC-Obesity and Comorbidities Research Center, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Eduardo R Ropelle
- Laboratory of Molecular Biology of Exercise, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil.,OCRC-Obesity and Comorbidities Research Center, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Dennys E Cintra
- OCRC-Obesity and Comorbidities Research Center, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil.,Laboratory of Nutritional Genomics, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Rania A Mekary
- Massachusetts College of Pharmacy and Health Sciences (MCPHS), Boston, Massachusetts, USA.,Department of Neurosurgery, Harvard Medical School, Computational Outcomes Research Center, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Iman Zaghloul
- Massachusetts College of Pharmacy and Health Sciences (MCPHS), Boston, Massachusetts, USA
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Restorative effects of Acetobacter ghanensis on the pathogenicity of gliadin-induced modulation of tight junction-associated gene expression in intestinal epithelial cells. JOURNAL OF SURGERY AND MEDICINE 2023. [DOI: 10.28982/josam.7585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Background/Aim: At present, a gluten-free diet is the only efficient way to treat celiac disease (CD). The development of novel approaches to lessen or counteract the pathogenic effects of gluten remains crucial for the treatment of CD. The aim in this investigation was to examine the restorative effects of Acetobacter ghanensis as a novel probiotic against gliadin-induced modulation in the barrier integrity of an intestinal epithelial cell (IEC) model (Caco-2).
Methods: Fully differentiated Caco-2 cell monolayers were subjected to enzymatically digested gliadin with a pepsin and trypsin (PT) in the presence or absence of A. ghanensis for 90 min. The relative amounts of zonulin, zonula occludens-1 (ZO-1), claudin-1, and occludin mRNA expression were determined by quantitative real-time polymerase chain reaction (qRT-PCR). Transepithelial electrical resistance (TEER) was evaluated to monitor the barrier integrity of cell monolayers. Statistical analyses were carried out using one- or two-way ANOVA followed by Tukey’s post-hoc analysis for multiple pairwise comparisons.
Results: A significant upregulation (4.7-fold) of zonulin was noted in the PT-gliadin treated Caco-2 cells in comparison with the untreated controls (P<0.001). Conversely, gliadin-induced zonulin expression was markedly downregulated in the Caco-2 cells following exposure to A. ghanensis in the presence of PT-gliadin (P<0.001). Furthermore, prominent decreases in the mRNA expression levels of ZO-1 (45%) and occludin (40%) were seen in the PT-gliadin exposed Caco-2 cells compared to the untreated control cells (P<0.001). PT-gliadin in the Caco-2 cells did not significantly alter the mRNA levels of claudin-1 (P=0.172). Similarly to zonulin expression, the decreasing effect of PT-gliadin on ZO-1 was completely attenuated in the PT-gliadin-administrated Caco-2 cells following exposure to A. ghanensis (P<0.001).
Conclusion: A. ghanensis restored the pathogenicity of PT-gliadin on intestinal barrier integrity.
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Sposito S, Secondo A, Romanelli AM, Montefusco A, Nanayakkara M, Auricchio S, Barone MV, Caputo I, Paolella G. Peculiar Ca 2+ Homeostasis, ER Stress, Autophagy, and TG2 Modulation in Celiac Disease Patient-Derived Cells. Int J Mol Sci 2023; 24:ijms24021495. [PMID: 36675008 PMCID: PMC9866799 DOI: 10.3390/ijms24021495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 01/02/2023] [Accepted: 01/05/2023] [Indexed: 01/15/2023] Open
Abstract
Celiac disease (CD) is an inflammatory intestinal disease caused by the ingestion of gluten-containing cereals by genetically predisposed individuals. Constitutive differences between cells from CD patients and control subjects, including levels of protein phosphorylation, alterations of vesicular trafficking, and regulation of type 2 transglutaminase (TG2), have been reported. In the present work, we investigated how skin-derived fibroblasts from CD and control subjects responded to thapsigargin, an endoplasmic reticulum ER stress inducer, in an attempt to contribute to the comprehension of molecular features of the CD cellular phenotype. We analyzed Ca2+ levels by single-cell video-imaging and TG2 activity by a microplate assay. Western blots and PCR analyses were employed to monitor TG2 levels and markers of ER stress and autophagy. We found that the cytosolic and ER Ca2+ level of CD cells was lower than in control cells. Treatments with thapsigargin differently activated TG2 in control and CD cells, as well as caused slightly different responses regarding the activation of ER stress and the expression of autophagic markers. On the whole, our findings identified further molecular features of the celiac cellular phenotype and highlighted that CD cells appeared less capable of adapting to a stress condition and responding in a physiological way.
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Affiliation(s)
- Silvia Sposito
- Department of Chemistry and Biology, University of Salerno, 84084 Fisciano, Italy
| | - Agnese Secondo
- Division of Pharmacology, Department of Neuroscience, Reproductive and Odontostomatological Sciences, School of Medicine, University Federico II, 80138 Naples, Italy
| | | | - Antonio Montefusco
- Department of Chemistry and Biology, University of Salerno, 84084 Fisciano, Italy
| | - Merlin Nanayakkara
- Department of Translational Medical Science, University Federico II, 80138 Naples, Italy
| | - Salvatore Auricchio
- European Laboratory for the Investigation of Food-Induced Diseases (ELFID), University Federico II, 80138 Naples, Italy
| | - Maria Vittoria Barone
- Department of Translational Medical Science, University Federico II, 80138 Naples, Italy
- European Laboratory for the Investigation of Food-Induced Diseases (ELFID), University Federico II, 80138 Naples, Italy
| | - Ivana Caputo
- Department of Chemistry and Biology, University of Salerno, 84084 Fisciano, Italy
- European Laboratory for the Investigation of Food-Induced Diseases (ELFID), University Federico II, 80138 Naples, Italy
| | - Gaetana Paolella
- Department of Chemistry and Biology, University of Salerno, 84084 Fisciano, Italy
- Correspondence:
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Nanayakkara M, Bellomo C, Furone F, Maglio M, Marano A, Lania G, Porpora M, Nicoletti M, Auricchio S, Barone MV. PTPRK, an EGFR Phosphatase, Is Decreased in CeD Biopsies and Intestinal Organoids. Cells 2022; 12:cells12010115. [PMID: 36611909 PMCID: PMC9818839 DOI: 10.3390/cells12010115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 12/12/2022] [Accepted: 12/21/2022] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND & AIMS Celiac disease (CeD) is an immune-mediated enteropathy triggered in genetically susceptible (HLA-DQ2/8) individuals by a group of wheat proteins and related prolamins from cereals. The celiac intestine is characterized by an inversion of the differentiation/proliferation program of the enterocytes, with an increase in the proliferative compartment and crypt hyperplasia, which are the mechanisms that regulate the increased proliferation in CeD that arenot completely understood.The aim of this study is to understand the role of Protein Tyrosine Phosphatase Receptor Type K (PTPRK), a nodal phosphatase that regulates EGFR activation in the proliferation of the enterocytes from CeD biopsies and organoids. METHODS The levels of PTPRK were evaluated by RT PCR, western blot (WB) and immunofluorescence techniques in intestinal biopsies and organoids from CeD patients and controls. Additionally, pEGFR and pERK were evaluated by WB and proliferation by BrdU incorporation. PTPRK si-RNA was silenced in CTR organoids and was overexpressed in CeD organoids. RESULTS PTPRK was reduced in Gluten Containing Diet-Celiac Disease (GCD-CeD) and Potential-Celiac Disease(Pot-CeD) biopsies (p < 0.01-p < 0.05) whereas pEGFR (p < 0.01 p < 0.01), pERK (p < 0.01 p < 0.01) and proliferation were increased. (p < 0.05 p < 0.05) respect to the controls.The CeD organoids reproduced these same alterations. Silencing of PTPRK in CTR organoids increased pEGFR, pERK and proliferation. The overexpression of PTPRK in CeD organoids reduced pEGFR, pERK and proliferation. CONCLUSIONS modulation of PTPRK levels can reduce or increase pEGFR, pERK and proliferation in CeD or CTR organoids, respectively. The CeD organoids can be a good model to study the mechanisms of the disease.
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Affiliation(s)
- Merlin Nanayakkara
- Department of Translational Medical Science, Section of Pediatrics, University Federico II, Via S. Pansini 5, 80131 Naples, Italy
| | - Claudia Bellomo
- Department of Translational Medical Science, Section of Pediatrics, University Federico II, Via S. Pansini 5, 80131 Naples, Italy
| | - Francesca Furone
- Department of Translational Medical Science, Section of Pediatrics, University Federico II, Via S. Pansini 5, 80131 Naples, Italy
| | - Mariantonia Maglio
- ELFID (European Laboratory for the Investigation of Food Induced Diseases), University Federico II, Via S. Pansini 5, 80131 Naples, Italy
| | - Antonella Marano
- ELFID (European Laboratory for the Investigation of Food Induced Diseases), University Federico II, Via S. Pansini 5, 80131 Naples, Italy
| | - Giuliana Lania
- ELFID (European Laboratory for the Investigation of Food Induced Diseases), University Federico II, Via S. Pansini 5, 80131 Naples, Italy
| | - Monia Porpora
- ELFID (European Laboratory for the Investigation of Food Induced Diseases), University Federico II, Via S. Pansini 5, 80131 Naples, Italy
| | - Martina Nicoletti
- Department of Translational Medical Science, Section of Pediatrics, University Federico II, Via S. Pansini 5, 80131 Naples, Italy
| | - Salvatore Auricchio
- ELFID (European Laboratory for the Investigation of Food Induced Diseases), University Federico II, Via S. Pansini 5, 80131 Naples, Italy
| | - Maria Vittoria Barone
- Department of Translational Medical Science, Section of Pediatrics, University Federico II, Via S. Pansini 5, 80131 Naples, Italy
- ELFID (European Laboratory for the Investigation of Food Induced Diseases), University Federico II, Via S. Pansini 5, 80131 Naples, Italy
- Correspondence: ; Tel.: +39-0817464568; Fax: +39-0817463116
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IL-1β blockade prevents cell death and mucosal damage of the small intestine in a model of sterile inflammation. Immunol Lett 2022; 251-252:56-62. [PMID: 36309159 DOI: 10.1016/j.imlet.2022.10.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 10/13/2022] [Accepted: 10/25/2022] [Indexed: 11/05/2022]
Abstract
The intestinal mucosa is covered by a layer of epithelial cells that is constantly challenged by commensal, opportunistic, and pathogenic microorganisms, their components, and harmful compounds. Any inflammatory response to these materials must be tightly controlled to limit tissue damage and restore the integrity of the mucosal barrier. We have shown previously that production of IL-1β via activation of the inflammasome can lead to mucosal damage in the small intestinal pathology that occurs after intragastric administration of a gluten derived peptide, p31-43. Here we show that specific inhibition of caspase-1 or NLRP3 abolishes the damage induced by p31-43, and that antibody-mediated blocking of IL-1β inhibits the both the histological changes and the induction of apoptosis and caspase-3 activation driven by p31-43. Understanding the role of IL-1β in sterile inflammation may help to understand chronic inflammatory pathological processes, and design new intervention strategies.
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Wang C, Cui C, Li N, Sun X, Wen L, Gao E, Wang F. Antioxidant activity and protective effect of wheat germ peptides in an in vitro celiac disease model via Keap1/Nrf2 signaling pathway. Food Res Int 2022; 161:111864. [DOI: 10.1016/j.foodres.2022.111864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 07/28/2022] [Accepted: 08/21/2022] [Indexed: 11/27/2022]
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Paolella G, Sposito S, Romanelli AM, Caputo I. Type 2 Transglutaminase in Coeliac Disease: A Key Player in Pathogenesis, Diagnosis and Therapy. Int J Mol Sci 2022; 23:ijms23147513. [PMID: 35886862 PMCID: PMC9318967 DOI: 10.3390/ijms23147513] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 07/01/2022] [Accepted: 07/04/2022] [Indexed: 11/16/2022] Open
Abstract
Type 2 transglutaminase (TG2) is the main autoantigen in coeliac disease (CD), a widespread inflammatory enteropathy caused by the ingestion of gluten-containing cereals in genetically predisposed individuals. As a consequence, serum antibodies to TG2 represent a very useful marker in CD diagnosis. However, TG2 is also an important player in CD pathogenesis, for its ability to deamidate some Gln residues of gluten peptides, which become more immunogenic in CD intestinal mucosa. Given the importance of TG2 enzymatic activities in CD, several studies have sought to discover specific and potent inhibitors that could be employed in new therapeutical approaches for CD, as alternatives to a lifelong gluten-free diet. In this review, we summarise all the aspects regarding TG2 involvement in CD, including its enzymatic reactions in pathogenesis, the role of anti-TG2 antibodies in disease management, and the exploration of recent strategies to reduce deamidation or to use transamidation to detoxify gluten.
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Affiliation(s)
- Gaetana Paolella
- Department of Chemistry and Biology, University of Salerno, 84084 Fisciano, SA, Italy; (S.S.); (A.M.R.)
- Correspondence: (G.P.); (I.C.)
| | - Silvia Sposito
- Department of Chemistry and Biology, University of Salerno, 84084 Fisciano, SA, Italy; (S.S.); (A.M.R.)
| | | | - Ivana Caputo
- Department of Chemistry and Biology, University of Salerno, 84084 Fisciano, SA, Italy; (S.S.); (A.M.R.)
- European Laboratory for the Investigation of Food-Induced Diseases (ELFID), University of Salerno, 84084 Fisciano, SA, Italy
- Correspondence: (G.P.); (I.C.)
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Barone MV, Auricchio R, Nanayakkara M, Greco L, Troncone R, Auricchio S. Pivotal Role of Inflammation in Celiac Disease. Int J Mol Sci 2022; 23:ijms23137177. [PMID: 35806180 PMCID: PMC9266393 DOI: 10.3390/ijms23137177] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/20/2022] [Accepted: 06/22/2022] [Indexed: 01/27/2023] Open
Abstract
Celiac disease (CD) is an immune-mediated enteropathy triggered in genetically susceptible individuals by gluten-containing cereals. A central role in the pathogenesis of CD is played by the HLA-restricted gliadin-specific intestinal T cell response generated in a pro-inflammatory environment. The mechanisms that generate this pro-inflammatory environment in CD is now starting to be addressed. In vitro study on CD cells and organoids, shows that constant low-grade inflammation is present also in the absence of gluten. In vivo studies on a population at risk, show before the onset of the disease and before the introduction of gluten in the diet, cellular and metabolic alterations in the absence of a T cell-mediated response. Gluten exacerbates these constitutive alterations in vitro and in vivo. Inflammation, may have a main role in CD, adding this disease tout court to the big family of chronic inflammatory diseases. Nutrients can have pro-inflammatory or anti-inflammatory effects, also mediated by intestinal microbiota. The intestine function as a crossroad for the control of inflammation both locally and at distance. The aim of this review is to discuss the recent literature on the main role of inflammation in the natural history of CD, supported by cellular fragility with increased sensitivity to gluten and other pro-inflammatory agents.
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Affiliation(s)
- Maria Vittoria Barone
- Department of Translational Medical Science, University Federico II, Via S. Pansini 5, 80131 Naples, Italy; (R.A.); (M.N.); (L.G.); (R.T.)
- European Laboratory for the Investigation of Food Induced Disease (ELFID), University Federico II, Via S. Pansini 5, 80131 Naples, Italy;
- Correspondence:
| | - Renata Auricchio
- Department of Translational Medical Science, University Federico II, Via S. Pansini 5, 80131 Naples, Italy; (R.A.); (M.N.); (L.G.); (R.T.)
- European Laboratory for the Investigation of Food Induced Disease (ELFID), University Federico II, Via S. Pansini 5, 80131 Naples, Italy;
| | - Merlin Nanayakkara
- Department of Translational Medical Science, University Federico II, Via S. Pansini 5, 80131 Naples, Italy; (R.A.); (M.N.); (L.G.); (R.T.)
- European Laboratory for the Investigation of Food Induced Disease (ELFID), University Federico II, Via S. Pansini 5, 80131 Naples, Italy;
| | - Luigi Greco
- Department of Translational Medical Science, University Federico II, Via S. Pansini 5, 80131 Naples, Italy; (R.A.); (M.N.); (L.G.); (R.T.)
- European Laboratory for the Investigation of Food Induced Disease (ELFID), University Federico II, Via S. Pansini 5, 80131 Naples, Italy;
| | - Riccardo Troncone
- Department of Translational Medical Science, University Federico II, Via S. Pansini 5, 80131 Naples, Italy; (R.A.); (M.N.); (L.G.); (R.T.)
- European Laboratory for the Investigation of Food Induced Disease (ELFID), University Federico II, Via S. Pansini 5, 80131 Naples, Italy;
| | - Salvatore Auricchio
- European Laboratory for the Investigation of Food Induced Disease (ELFID), University Federico II, Via S. Pansini 5, 80131 Naples, Italy;
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Conte M, Nigro F, Porpora M, Bellomo C, Furone F, Budelli AL, Nigro R, Barone MV, Nanayakkara M. Gliadin Peptide P31-43 Induces mTOR/NFkβ Activation and Reduces Autophagy: The Role of Lactobacillus paracasei CBA L74 Postbiotc. Int J Mol Sci 2022; 23:ijms23073655. [PMID: 35409015 PMCID: PMC8999065 DOI: 10.3390/ijms23073655] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/18/2022] [Accepted: 03/24/2022] [Indexed: 11/16/2022] Open
Abstract
Celiac disease (CD) is an autoimmune disease characterized by an altered immune response stimulated by gliadin peptides that are not digested and cause damage to the intestinal mucosa. The aim of this study was to investigate whether the postbiotic Lactobacillus paracasei (LP) could prevent the action of gliadin peptides on mTOR, autophagy, and the inflammatory response. Most of the experiments performed were conducted on intestinal epithelial cells Caco-2 treated with a peptic-tryptic digest of gliadin (PTG) and P31-43. Furthermore, we pretreated the Caco-2 with the postbiotic LP before treatment with the previously described stimuli. In both cases, we evaluated the levels of pmTOR, p70S6k, and p4EBP-1 for the mTOR pathway, pNFkβ, and pERK for inflammation and LC 3 and p62 for autophagy. For autophagy, we also used immunofluorescence analysis. Using intestinal organoids derivate from celiac (CD) patients, we analyzed the effect of gliadin after postbiotic pretreatment with LP on inflammation marker NFkβ. Through these experiments, we showed that gliadin peptides are able to induce the increase of the inflammatory response in a more complex model of intestinal epithelial cells. LP postbiotic was able to induce autophagy in Caco-2 cells and prevent gliadin effects. In conclusion, postbiotic pretreatment with LP could be considered for in vivo clinical trials.
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Affiliation(s)
- Mariangela Conte
- ELFID (European Laboratory for the Investigation of Food Induced Diseases), Department of Translational Medical Science, Section of Paediatrics, University Federico II, Via S. Pansini 5, 80131 Naples, Italy; (M.C.); (M.P.); (C.B.); (F.F.); (M.N.)
| | - Federica Nigro
- I.T.P. Innovation and Technology Provider s.r.l., Via Bisignano a Chiaia 68, 80121 Naples, Italy;
| | - Monia Porpora
- ELFID (European Laboratory for the Investigation of Food Induced Diseases), Department of Translational Medical Science, Section of Paediatrics, University Federico II, Via S. Pansini 5, 80131 Naples, Italy; (M.C.); (M.P.); (C.B.); (F.F.); (M.N.)
| | - Claudia Bellomo
- ELFID (European Laboratory for the Investigation of Food Induced Diseases), Department of Translational Medical Science, Section of Paediatrics, University Federico II, Via S. Pansini 5, 80131 Naples, Italy; (M.C.); (M.P.); (C.B.); (F.F.); (M.N.)
| | - Francesca Furone
- ELFID (European Laboratory for the Investigation of Food Induced Diseases), Department of Translational Medical Science, Section of Paediatrics, University Federico II, Via S. Pansini 5, 80131 Naples, Italy; (M.C.); (M.P.); (C.B.); (F.F.); (M.N.)
| | - Andrea Luigi Budelli
- DICMAPI, University of Naples Federico II, 80125 Naples, Italy; (A.L.B.); (R.N.)
| | - Roberto Nigro
- DICMAPI, University of Naples Federico II, 80125 Naples, Italy; (A.L.B.); (R.N.)
| | - Maria Vittoria Barone
- ELFID (European Laboratory for the Investigation of Food Induced Diseases), Department of Translational Medical Science, Section of Paediatrics, University Federico II, Via S. Pansini 5, 80131 Naples, Italy; (M.C.); (M.P.); (C.B.); (F.F.); (M.N.)
- Correspondence: ; Tel.: +39-0817464568
| | - Merlin Nanayakkara
- ELFID (European Laboratory for the Investigation of Food Induced Diseases), Department of Translational Medical Science, Section of Paediatrics, University Federico II, Via S. Pansini 5, 80131 Naples, Italy; (M.C.); (M.P.); (C.B.); (F.F.); (M.N.)
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Inflammation Is Present, Persistent and More Sensitive to Proinflammatory Triggers in Celiac Disease Enterocytes. Int J Mol Sci 2022; 23:ijms23041973. [PMID: 35216089 PMCID: PMC8880034 DOI: 10.3390/ijms23041973] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 01/21/2022] [Accepted: 02/02/2022] [Indexed: 12/21/2022] Open
Abstract
Celiac disease (CD) is a chronic inflammatory disease caused by a genetic predisposition to an abnormal T cell-mediated immune response to the gluten in the diet. Different environmental proinflammatory factors can influence and amplify the T cell-mediated response to gluten. The aim of this manuscript was to study the role of enterocytes in CD intestinal inflammation and their response to different proinflammatory factors, such as gliadin and viruses. Intestinal biopsies from CD patients on a gluten-containing (GCD-CD) or a gluten-free diet (GFD-CD) as well as biopsies from potential CD patients (Pot-CD) before the onset of intestinal lesions and controls (CTR) were used to investigate IL-1β and IL-6 mRNA levels in situ. Organoids from CD patients were used to test the levels of NF-κB, ERK, IL-6, and IL-1β by Western blot (WB), ELISA, and quantitative PCR. The Toll-like receptor ligand loxoribine (Lox) and gliadin peptide P31-43 were used as proinflammatory stimuli. In CD biopsies inflammation markers IL-1β and IL-6 were increased in the enterocytes, and also in Pot-CD before the onset of the intestinal lesion and in GFD-CD. The inflammatory markers pNF-κB, pERK, IL-1β, and IL-6 were increased and persistent in CD organoids; these organoids were more sensitive to P31-43 and Lox stimuli compared with CTR organoids. Taken together, these observations point to constitutive inflammation in CD enterocytes, which are more sensitive to inflammatory stimuli such as food components and viruses.
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Buqué A, Montrose DC, Galluzzi L. Emergent impact of lifestyle on tumor progression and response to therapy. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2022; 373:ix-xvii. [DOI: 10.1016/s1937-6448(22)00132-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Programmed Cell Death in the Small Intestine: Implications for the Pathogenesis of Celiac Disease. Int J Mol Sci 2021; 22:ijms22147426. [PMID: 34299046 PMCID: PMC8306608 DOI: 10.3390/ijms22147426] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 06/17/2021] [Accepted: 06/18/2021] [Indexed: 12/15/2022] Open
Abstract
The small intestine has a high rate of cell turnover under homeostatic conditions, and this increases further in response to infection or damage. Epithelial cells mostly die by apoptosis, but recent studies indicate that this may also involve pro-inflammatory pathways of programmed cell death, such as pyroptosis and necroptosis. Celiac disease (CD), the most prevalent immune-based enteropathy, is caused by loss of oral tolerance to peptides derived from wheat, rye, and barley in genetically predisposed individuals. Although cytotoxic cells and gluten-specific CD4+ Th1 cells are the central players in the pathology, inflammatory pathways induced by cell death may participate in driving and sustaining the disease through the release of alarmins. In this review, we summarize the recent literature addressing the role of programmed cell death pathways in the small intestine, describing how these mechanisms may contribute to CD and discussing their potential implications.
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Voisine J, Abadie V. Interplay Between Gluten, HLA, Innate and Adaptive Immunity Orchestrates the Development of Coeliac Disease. Front Immunol 2021; 12:674313. [PMID: 34149709 PMCID: PMC8206552 DOI: 10.3389/fimmu.2021.674313] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 05/18/2021] [Indexed: 12/26/2022] Open
Abstract
Several environmental, genetic, and immune factors create a "perfect storm" for the development of coeliac disease: the antigen gluten, the strong association of coeliac disease with HLA, the deamidation of gluten peptides by the enzyme transglutaminase 2 (TG2) generating peptides that bind strongly to the predisposing HLA-DQ2 or HLA-DQ8 molecules, and the ensuing unrestrained T cell response. T cell immunity is at the center of the disease contributing to the inflammatory process through the loss of tolerance to gluten and the differentiation of HLA-DQ2 or HLA-DQ8-restricted anti-gluten inflammatory CD4+ T cells secreting pro-inflammatory cytokines and to the killing of intestinal epithelial cells by cytotoxic intraepithelial CD8+ lymphocytes. However, recent studies emphasize that the individual contribution of each of these cell subsets is not sufficient and that interactions between these different populations of T cells and the simultaneous activation of innate and adaptive immune pathways in distinct gut compartments are required to promote disease immunopathology. In this review, we will discuss how tissue destruction in the context of coeliac disease results from the complex interactions between gluten, HLA molecules, TG2, and multiple innate and adaptive immune components.
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Affiliation(s)
- Jordan Voisine
- Department of Medicine, The University of Chicago, Chicago, IL, United States.,Committee on Immunology, The University of Chicago, Chicago, IL, United States
| | - Valérie Abadie
- Department of Medicine, The University of Chicago, Chicago, IL, United States.,Section of Gastroenterology, Nutrition and Hepatology, The University of Chicago, Chicago, IL, United States
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Barone MV, Auricchio S. A Cumulative Effect of Food and Viruses to Trigger Celiac Disease (CD): A Commentary on the Recent Literature. Int J Mol Sci 2021; 22:2027. [PMID: 33670760 PMCID: PMC7922374 DOI: 10.3390/ijms22042027] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/09/2021] [Accepted: 02/11/2021] [Indexed: 12/27/2022] Open
Abstract
Celiac disease (CD) is a type of inflammatory chronic disease caused by nutrients such as gliadin that induce a TC (T cell)-mediated response in a partially known genetical background in an environment predisposed to inflammation, including viruses and food. Various experimental and clinical observations suggest that multiple agents such as viruses and bacteria have some common, inflammatory pathways predisposing individuals to chronic inflammatory diseases including celiac disease (CD). More recently, a Western diet and lifestyle have been linked to tissue inflammation and increase in chronic inflammatory diseases. In CD, the gliadin protein itself has been shown to be able to induce inflammation. A cooperation between viruses and gliadin is present in vitro and in vivo with common mechanisms to induce inflammation. Nutrients could have also a protective effect on CD, and in fact the anti-inflammatory Mediterranean diet has a protective effect on the development of CD in children. The possible impact of these observations on clinical practice is discussed.
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Affiliation(s)
- Maria Vittoria Barone
- Department of Translation Medical Science (DISMET), University Federico II, 80131 Naples, Italy
- European Laboratory for the Investigation of Food Induced Diseases (ELFID), University Federico II, 80131 Naples, Italy;
| | - Salvatore Auricchio
- European Laboratory for the Investigation of Food Induced Diseases (ELFID), University Federico II, 80131 Naples, Italy;
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Falcigno L, Calvanese L, Conte M, Nanayakkara M, Barone MV, D’Auria G. Structural Perspective of Gliadin Peptides Active in Celiac Disease. Int J Mol Sci 2020; 21:E9301. [PMID: 33291297 PMCID: PMC7731278 DOI: 10.3390/ijms21239301] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 12/04/2020] [Indexed: 12/12/2022] Open
Abstract
Gluten fragments released in gut of celiac individuals activate the innate or adaptive immune systems. The molecular mechanisms associated with the adaptive response involve a series of immunodominant gluten peptides which are mainly recognized by human leucocyte antigen (HLA)-DQ2.5 and HLA-DQ8. Other peptides, such as A-gliadin P31-43, are not recognized by HLA and trigger innate responses by several routes not yet well detailed. Among the gluten fragments known to be active in Celiac disease, here we focus on the properties of all gluten peptides with known tri-dimensional structure either those locked into HLA-DQ complexes whose crystals were X-ray analyzed or characterized in solution as free forms. The aim of this work was to find the structural reasons why some gluten peptides prompt the adaptive immune systems while others do not, by apparently involving just the innate immune routes. We propose that P31-43 is a non-adaptive prompter because it is not a good ligand for HLA-DQ. Even sharing a similar ability to adopt polyproline II structure with the adaptive ones, the way in which the proline residues are located along the sequence disfavors a productive P31-43-HLA-DQ binding.
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Affiliation(s)
- Lucia Falcigno
- Department of Pharmacy, University of Naples Federico II, Via Mezzocannone 16, 80134 Naples, Italy;
| | - Luisa Calvanese
- Department of Pharmacy, University of Naples Federico II, Via Mezzocannone 16, 80134 Naples, Italy;
| | - Mariangela Conte
- Department of Translational Medical Science, Section of Pediatrics, University of Naples Federico II, 80131 Naples, Italy; (M.C.); (M.N.); (M.V.B.)
- European Laboratory for the Investigation of Food Induced Diseases (ELFID), University of Naples Federico II, 80131 Naples, Italy
| | - Merlin Nanayakkara
- Department of Translational Medical Science, Section of Pediatrics, University of Naples Federico II, 80131 Naples, Italy; (M.C.); (M.N.); (M.V.B.)
- European Laboratory for the Investigation of Food Induced Diseases (ELFID), University of Naples Federico II, 80131 Naples, Italy
| | - Maria Vittoria Barone
- Department of Translational Medical Science, Section of Pediatrics, University of Naples Federico II, 80131 Naples, Italy; (M.C.); (M.N.); (M.V.B.)
- European Laboratory for the Investigation of Food Induced Diseases (ELFID), University of Naples Federico II, 80131 Naples, Italy
| | - Gabriella D’Auria
- Department of Pharmacy, University of Naples Federico II, Via Mezzocannone 16, 80134 Naples, Italy;
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