Cited by 45Drug Transport and Resistance MechanismsInflammatory Bowel DiseaseSulfur Compounds in Biology

Organic cation transporter Octn1-mediated uptake of food-derived antioxidant ergothioneine into infiltrating macrophages during intestinal inflammation in mice

Shimizu, Takuya, Masuo, Yusuke, Takahashi, Saki, Nakamichi, Noritaka, Kato, Yukio·2015·Drug Metabolism and Pharmacokinetics

Abstract

OCTN1/SLC22A4 is expressed on apical membranes of small intestine, and is involved in gastrointestinal absorption of its substrates, including the food-derived antioxidant ergothioneine (ERGO). ERGO concentration in circulating blood of patients with inflammatory bowel disease (Crohn's disease) is lower than that in healthy volunteers; thus, circulating ERGO is a potential diagnostic marker, although the mechanisms underlying low ERGO concentration in patients are unknown. Here, we focused on intestinal macrophages, which infiltrate sites of inflammation, and examined possible first-pass uptake of ERGO by macrophages. ERGO concentration in blood was lower in mice with dextran sodium sulfate (DSS)-induced colitis than in controls. On the other hand, expression of octn1 gene product and ERGO concentration in intestinal tissues of DSS-treated mice were higher than in controls. Interestingly, lamina propria mononuclear cells (LPMCs) isolated from DSS-treated mice contained ERGO and showed [(3)H]ERGO uptake and Octn1 expression, whereas ERGO was undetectable in LPMCs of control mice. Functional expression of OCTN1 was also confirmed in LPS-stimulated human macrophage-like cell line, THP-1. In conclusion, OCTN1 is functionally expressed on activated intestinal macrophages, and ERGO uptake into these immune cells could contribute at least in part to the altered disposition of ERGO in intestinal inflammation.

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Crossref · 10.1016/j.dmpk.2015.02.003

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  • SLC22A4 and its homologues have significant specificity for ERG and weak activity for various drugs.

    “Subsequent work(87,169–172) has confirmed and reinforced this view of SLC22A4 and its homologues(173) as having significant specificity for ERG, and weak activity for various drugs(174–177).”

    From The biology of ergothioneine, an antioxidant nutraceutical (2020) · cites this paper as [173]

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Authors
Shimizu, T., Masuo, Y., Takahashi, S., Nakamichi, N., & Kato, Y.
Affiliations
Kanazawa University (JP)
Corresponding author
Kato, Yukio
Venue
Drug Metabolism and Pharmacokinetics
Publisher
Elsevier BV
Published
2015-06
Volume
30
Issue
3
Pages
231-239
ISSN
1347-4367 (ISSN-L)
OpenAlex
W2071190006
Cited by
45
References
40
Citations by year
2026: 7 · 2025: 5 · 2024: 1 · 2023: 5 · 2022: 5 · 2021: 7 · 2020: 3 · 2019: 2 · 2018: 4 · 2017: 4 · 2016: 1 · 2015: 1
FWCI
1.46
Type
journal article
Language
en
Open access
closed
Locations
  • Drug Metabolism and Pharmacokinetics (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Ministry of Education, Science and Culture of Japan (24390040)
  • Takeda Science Foundation
  • Shimadzu Foundation
  • Hoansha Foundation
  • National Institute of Biomedical Innovation
Topics
  • Health Sciences › Medicine › Oncology › Drug Transport and Resistance Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Inflammatory Bowel Disease
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Sulfur Compounds in Biology
Keywords
ergothioneine, OCTN1, SLC22A4, intestinal macrophages, intestinal inflammation, DSS-induced colitis, inflammatory bowel disease, Crohn's disease, lamina propria mononuclear cells, THP-1 macrophages, dietary antioxidants, biomarkers
MeSH terms
Animals, Antioxidants, Carrier Proteins, Cell Line, Colitis, Disease Models, Animal, Epithelial Cells, Ergothioneine, Flow Cytometry, Food, Humans, Immunohistochemistry, Intestinal Mucosa, Lipopolysaccharides, Macrophages, Male, Membrane Proteins, Mice, Inbred C57BL, Nutritional Physiological Phenomena, Blotting, Western, Mice, Knockout, Organic Cation Transport Proteins, Symporters

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