Cited by 136Celiac Disease Research and ManagementGut microbiota and healthProbiotics and Fermented Foods

Lactobacilli Degrade Wheat Amylase Trypsin Inhibitors to Reduce Intestinal Dysfunction Induced by Immunogenic Wheat Proteins

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Caminero, Alberto, McCarville, Justin L., Zevallos, Victor F., Pigrau, Marc, Yu, Xuechen B., Jury, Jennifer, Galipeau, Heather J., Clarizio, Alexandra V. +7 more·2019·Gastroenterology

Abstract

Background & aims Wheat-related disorders, a spectrum of conditions induced by the ingestion of gluten-containing cereals, have been increasing in prevalence. Patients with celiac disease have gluten-specific immune responses, but the contribution of non-gluten proteins to symptoms in patients with celiac disease or other wheat-related disorders is controversial.Methods C57BL/6 (control), Myd88-/-, Ticam1-/-, and Il15-/- mice were placed on diets that lacked wheat or gluten, with or without wheat amylase trypsin inhibitors (ATIs), for 1 week. Small intestine tissues were collected and intestinal intraepithelial lymphocytes (IELs) were measured; we also investigated gut permeability and intestinal transit. Control mice fed ATIs for 1 week were gavaged daily with Lactobacillus strains that had high or low ATI-degrading capacity. Nonobese diabetic/DQ8 mice were sensitized to gluten and fed an ATI diet, a gluten-containing diet or a diet with ATIs and gluten for 2 weeks. Mice were also treated with Lactobacillus strains that had high or low ATI-degrading capacity. Intestinal tissues were collected and IELs, gene expression, gut permeability and intestinal microbiota profiles were measured.Results In intestinal tissues from control mice, ATIs induced an innate immune response by activation of Toll-like receptor 4 signaling to MD2 and CD14, and caused barrier dysfunction in the absence of mucosal damage. Administration of ATIs to gluten-sensitized mice expressing HLA-DQ8 increased intestinal inflammation in response to gluten in the diet. We found ATIs to be degraded by Lactobacillus, which reduced the inflammatory effects of ATIs.Conclusions ATIs mediate wheat-induced intestinal dysfunction in wild-type mice and exacerbate inflammation to gluten in susceptible mice. Microbiome-modulating strategies, such as administration of bacteria with ATI-degrading capacity, may be effective in patients with wheat-sensitive disorders.

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Crossref · 10.1053/j.gastro.2019.02.028

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  • Gut microbial proteases are able to digest wheat amylase trypsin inhibitors, thereby reducing the intestinal dysfunction associated with wheat proteins.

    “Gut microbial proteases are able to digest ATI, thereby reducing the intestinal dysfunction associated with wheat proteins.101”
  • Lactobacillus strains degrade both gluten and wheat amylase trypsin inhibitor peptides, reducing their immunogenic properties.

    “For example, Lactobacillus strains degrade both gluten and ATI peptides, reducing their immunogenic properties.18,101”

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  1. Huebener S, Tanaka CK, Uhde M, et al. Specific non- gluten proteins of wheat are novel target antigens in celiac disease humoral response. J Proteome Res 2015; 14:503-511.
  2. Vannay A, Sziksz E, Prokai A, et al. Increased expres- sion of hypoxia-inducible factor 1alpha in coeliac dis- ease. Pediatr Res 2010;68:118-122.
  3. Cervantes-Barragan L, Chai JN, Tianero MD, et al. Lactobacillus reuteri induces gut intraepithelial CD4(þ)CD8alphaalpha(þ) T cells. Science 2017; 357:806-810.

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Authors
Caminero, A., McCarville, J. L., Zevallos, V. F., Pigrau, M., Yu, X. B., Jury, J., Galipeau, H. J., Clarizio, A. V., Casqueiro, J., Murray, J. A., Collins, S. M., Alaedini, A., Bercik, P., Schuppan, D., & Verdu, E. F.
Affiliations
  • McMaster University (CA)
  • Johannes Gutenberg University Mainz (DE)
  • Columbia University Irving Medical Center (US)
  • Universidad de León (ES)
  • Mayo Clinic (US)
  • Beth Israel Deaconess Medical Center (US)
Corresponding author
Verdu, Elena F.
Venue
Gastroenterology
Publisher
Elsevier BV
Published
2019-06
Volume
156
Issue
8
Pages
2266-2280
ISSN
0016-5085 (ISSN-L)
OpenAlex
W2915151993
Cited by
136
References
61
Citations by year
2026: 11 · 2025: 17 · 2024: 15 · 2023: 13 · 2022: 23 · 2021: 24 · 2020: 21 · 2019: 12
FWCI
18.35
Type
journal article
Language
en
Open access
Locations
  • Gastroenterology (publishedVersion)
  • PubMed (publishedVersion)
  • St Mary's University Repository (ULCC) (submittedVersion)
Funders
  • Canadian Institutes of Health Research (142773)
  • Allegheny Technologies Incorporated
  • Deutsche Forschungsgemeinschaft (Schu 646/17-1, Pic/Sch SPP 1656)
  • National Institutes of Health
  • Mayo Foundation for Medical Education and Research
  • Canadian Celiac Association (US8617536)
Topics
  • Health Sciences › Medicine › Gastroenterology › Celiac Disease Research and Management
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Probiotics and Fermented Foods
Keywords
Lactobacillus, celiac disease, gluten sensitivity, intestinal barrier dysfunction, intestinal permeability, intraepithelial lymphocytes, TLR4 signaling, intestinal inflammation, HLA-DQ8, gut microbiota, probiotics
MeSH terms
Gastrointestinal Microbiome, Amylases, Animals, Celiac Disease, Disease Models, Animal, Gliadin, Humans, Immunity, Innate, Lactobacillus, Mice, Inbred C57BL, Random Allocation, Reference Values, Sensitivity and Specificity, Trypsin Inhibitors, Triticum, Mice, Diet, Gluten-Free

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