Cited by 102Drug Transport and Resistance MechanismsInflammatory Bowel DiseaseGut microbiota and health

The Xenobiotic Transporter Mdr1 Enforces T Cell Homeostasis in the Presence of Intestinal Bile Acids

Open access
Cao, Wei, Kayama, Hisako, Chen, Mei Lan, Delmas, Amber, Sun, Amy, Kim, Sang Yong, Rangarajan, Erumbi S., McKevitt, Kelly +15 more·2017·Immunity

Abstract

CD4+ T cells are tightly regulated by microbiota in the intestine, but whether intestinal T cells interface with host-derived metabolites is less clear. Here, we show that CD4+ T effector (Teff) cells upregulated the xenobiotic transporter, Mdr1, in the ileum to maintain homeostasis in the presence of bile acids. Whereas wild-type Teff cells upregulated Mdr1 in the ileum, those lacking Mdr1 displayed mucosal dysfunction and induced Crohn's disease-like ileitis following transfer into Rag1-/- hosts. Mdr1 mitigated oxidative stress and enforced homeostasis in Teff cells exposed to conjugated bile acids (CBAs), a class of liver-derived emulsifying agents that actively circulate through the ileal mucosa. Blocking ileal CBA reabsorption in transferred Rag1-/- mice restored Mdr1-deficient Teff cell homeostasis and attenuated ileitis. Further, a subset of ileal Crohn's disease patients displayed MDR1 loss of function. Together, these results suggest that coordinated interaction between mucosal Teff cells and CBAs in the ileum regulate intestinal immune homeostasis.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1016/j.immuni.2017.11.012

Cites

50 of 50 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • CD4+ T cells require the MDR1 efflux transporter, encoded by Abcb1a/b in mice, to survive in bile acid-rich intestinal tissues.

    “Previous reports have shown that CD4+ T cells require the MDR1 efflux transporter (encoded by Abcb1a/b in mice) to survive in BA-rich intestinal tissues (26).”

    From Bile acid synthesis impedes tumor-specific T cell responses during liver cancer (2025) · cites this paper as [26]

    The Results section, “Mdr1 Enforces T Cell Homeostasis in the Presence of Conjugated Bile Acids” (page not provided), reports that Mdr1 supports effector T-cell survival during bile-acid exposure; Mdr1-null cells did not survive overnight culture with a conjugated bile acid. The claim broadens this finding to CD4+ T cells generally and to survival in intestinal tissues, whereas the reported survival test was in culture. (LLM, conf=0.83)

    Experimental — accuracy not yet measured

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

2 of the 52 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Authors
Cao, W., Kayama, H., Chen, M. L., Delmas, A., Sun, A., Kim, S. Y., Rangarajan, E. S., McKevitt, K., Beck, A. P., Jackson, C. B., Crynen, G., Oikonomopoulos, A., Lacey, P. N., Martinez, G. J., Izard, T., Lorenz, R. G., Rodriguez-Palacios, A., Cominelli, F., Abreu, M. T., Hommes, D. W., Koralov, S. B., Takeda, K., & Sundrud, M. S.
Affiliations
  • Scripps Research Institute (US)
  • The University of Osaka (JP)
  • New York University (US)
  • The University of Texas MD Anderson Cancer Center (US)
  • University of California, Los Angeles (US)
  • University of Alabama at Birmingham (US)
  • Case Western Reserve University (US)
  • University of Miami (US)
Corresponding author
Sundrud, Mark S.
Venue
Immunity
Publisher
Elsevier BV
Published
2017-12
Volume
47
Issue
6
Pages
1182-1196.e10
ISSN
1074-7613 (ISSN-L)
OpenAlex
W2777277663
Cited by
102
References
52
Citations by year
2026: 6 · 2025: 11 · 2024: 11 · 2023: 11 · 2022: 15 · 2021: 19 · 2020: 14 · 2019: 6 · 2018: 8 · 2017: 1
FWCI
3.50
Type
journal article
Language
en
Update notices
erratum (2020-03-17)
Open access
Locations
  • Immunity (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • TSRI Florida
  • State of Florida
  • National Institute of Allergy and Infectious Diseases (R21AI119728, R21AI124129)
  • National Institute of Diabetes and Digestive and Kidney Diseases (5R01DK099076-07, P01DK071176)
  • National Heart, Lung, and Blood Institute (RO1HL125816)
  • Crohn’s and Colitis Foundation of America (422515, 3786, 26971)
  • Broad Medical Foundation (IBD-0389R)
  • Colton Center for Autoimmunity
  • Core Research for Evolutional Science and Technology, Japan Science and Technology Agency (JPMJCR10J2)
  • Ministry of Education, Culture, Sports, Science and Technology (T15K15152, A15H02511)
  • Ministry of Health, Labour, and Welfare (201324001B)
  • Lotte Research Promotion Grant
  • Nagao Memorial Fund
  • AbbVie
  • Amgen
  • Asana Medical
  • Ferring Pharmaceuticals
  • Focus Medical Communications
  • Genentech
  • Genova Diagnostics
  • GI Health Foundation
  • Gilead
  • GSK Holding Americas
  • Hospira
  • Janssen
  • Mucosal Health Board
  • Pfizer
  • Prometheus Laboratories
  • Prova Education
  • Sanofi Aventis
  • Shire
  • Takeda
  • UCB
  • WebMD Health
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 › Molecular Biology › Gut microbiota and health
Keywords
MDR1, P-glycoprotein, CD4+ T cells, T cell homeostasis, bile acid conjugates, ileum, Crohn's disease, intestinal immune homeostasis, oxidative stress, gut microbiota, Rag1-deficient mice, ileal mucosa
MeSH terms
Acridines, Adult, Animals, Bile Acids and Salts, Biological Transport, Crohn Disease, Disease Models, Animal, Female, Gene Expression Regulation, Homeostasis, Humans, Ileitis, Ileum, Intestinal Mucosa, Male, Mice, Inbred C57BL, Mice, Transgenic, Middle Aged, Signal Transduction, CD4-Positive T-Lymphocytes, Oxidative Stress, Homeodomain Proteins, Immunity, Mucosal, ATP Binding Cassette Transporter, Subfamily B, Member 1, Tetrahydroisoquinolines, Mice

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review