Cited by 143Helicobacter pylori-related gastroenterology studiesGastrointestinal motility and disordersGastric Cancer Management and Outcomes

Helicobacter pylori targets cancer-associated apical-junctional constituents in gastroids and gastric epithelial cells

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Wroblewski, Lydia E, Piazuelo, M Blanca, Chaturvedi, Rupesh, Schumacher, Michael, Aihara, Eitaro, Feng, Rui, Noto, Jennifer M, Delgado, Alberto +7 more·2015·Gut

Abstract

Objective: Helicobacter pylori strains that express the oncoprotein CagA augment risk for gastric cancer. However, the precise mechanisms through which cag + strains heighten cancer risk have not been fully delineated and model systems that recapitulate the gastric niche are critical for understanding pathogenesis. Gastroids are three-dimensional organ-like structures that provide unique opportunities to study host-H. pylori interactions in a preclinical model. We used gastroids to inform and direct in vitro studies to define mechanisms through which H. pylori modulates expression of the cancer-associated tight junction protein claudin-7. Design: Gastroids were infected by luminal microinjection, and MKN28 gastric epithelial cells were cocultured with H. pylori wild-type cag+ strains or isogenic mutants. β-catenin, claudin-7 and snail localisation was determined by immunocytochemistry. Proliferation was assessed using 5-ethynyl-2′-deoxyuridine, and levels of claudin-7 and snail were determined by western blot and flow cytometry. Results: Gastroids developed into a self-organising differentiation axis and H. pylori induced mislocalisation of claudin-7 and increased proliferation in a CagA- and β-catenin-dependent manner. In MKN28 cells, H pylori-induced suppression of claudin-7 was regulated by β-catenin and snail. Similarly, snail expression was increased and claudin-7 levels were decreased among H. pylori-infected individuals. Conclusions: H. pylori increase proliferation in a strain-specific manner in a novel gastroid system. H. pylori also alter expression and localisation of claudin-7 in gastroids and human epithelial cells, which is mediated by β-catenin and snail activation. These data provide new insights into molecular interactions with carcinogenic potential that occur between H. pylori and epithelial cells within the gastric niche.

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Crossref · 10.1136/gutjnl-2014-307650

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  • Organoids infected with HRV or rotavirus enterotoxin showed lumenal swelling, a characteristic of rotavirus-induced diarrhea.

    “Organoids infected with HRV or rotavirus enterotoxin showed lumenal swelling, a characteristic of rotavirus-induced diarrhea181.”

    From Organoids (2022) · cites this paper as [181]

    The Results section describes gastroids infected with H. pylori and changes in occludin and β-catenin; the Discussion likewise concerns H. pylori infection. Searches for HRV, rotavirus enterotoxin, lumenal swelling, and rotavirus-induced diarrhea found no passage addressing the claimed observation. No page numbers were provided in our copy. (LLM, conf=0.76)

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  • In human intestinal organoids, differentiated intestinal cells are more susceptible to human rotavirus infection than undifferentiated ones.

    “In human intestinal organoids, differentiated intestinal cells are more susceptible to human rotavirus (HRV) infection than undifferentiated ones.”

    From Organoids (2022) · cites this paper as [181]

    The Results section describes mouse gastric organoids infected with H. pylori, not human intestinal organoids infected with rotavirus. The Discussion discusses differentiation in gastroids but does not compare infection susceptibility in differentiated and undifferentiated intestinal cells. Searches for rotavirus and that susceptibility comparison found no relevant passage in our copy; page numbers were not provided. (LLM, conf=0.78)

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Authors
Wroblewski, L. E., Piazuelo, M. B., Chaturvedi, R., Schumacher, M., Aihara, E., Feng, R., Noto, J. M., Delgado, A., Israel, D. A., Zavros, Y., Montrose, M. H., Shroyer, N., Correa, P., Wilson, K. T., & Peek, R. M.
Affiliations
  • Vanderbilt University (US)
  • University of Cincinnati (US)
  • Cincinnati Children's Hospital Medical Center (US)
Corresponding author
Peek, Richard M
Venue
Gut
Publisher
BMJ
Published
2014-08-14
Volume
64
Issue
5
Pages
720-730
ISSN
  • 0017-5749 (ISSN-L)
  • 1468-3288
OpenAlex
W2164422245
Cited by
143
References
53
Citations by year
2026: 6 · 2025: 3 · 2024: 4 · 2023: 13 · 2022: 16 · 2021: 19 · 2020: 14 · 2019: 12 · 2018: 10 · 2017: 16 · 2016: 18 · 2015: 11 · 2014: 1
FWCI
15.22
Type
journal article
Language
en
Open access
Locations
  • Gut (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • U.S. Department of Veterans Affairs (I01 BX001453)
  • National Institutes of Health (1k01at007324-01, CA 116087, CA-77955, DK 058404)
  • National Cancer Institute (CA028842, CA116087), R29CA077955, P01CA028842, CA-77955, R01CA190612, CA 153539, F32CA153539, R01CA077955, P01CA116087)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK058404, R01DK058587, R01DK054940, R01DK083402, R01DK053620, DK-58587, DK053620, R01DK073902, P30DK058404, P30DK078392)
  • National Center for Complementary and Integrative Health (K01-AT-007324, R01AT004821, AT 007324)
Topics
  • Health Sciences › Medicine › Surgery › Helicobacter pylori-related gastroenterology studies
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Gastric Cancer Management and Outcomes
Keywords
Helicobacter pylori, claudin-7, gastric epithelial cells, MKN28 cells, β-catenin, snails, tight junctions, apical junctions, epithelial cell proliferation, gastric cancer risk, host-pathogen interaction
MeSH terms
Snail Family Transcription Factors, Animals, Cells, Cultured, Epithelial Cells, Gastric Mucosa, Humans, Mice, Inbred C57BL, Transcription Factors, Helicobacter pylori, Helicobacter Infections, Coculture Techniques, Cell Proliferation, beta Catenin, Claudins

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