Evidence map›Paper›PMID 37116499›Full record

ArticleImmunity2023

Methotrexate suppresses psoriatic skin inflammation by inhibiting muropeptide transporter SLC46A2 activity.

Ravi Bharadwaj, Christina F Lusi, Siavash Mashayekh, Abhinit Nagar, Malireddi Subbarao, Griffin I Kane, Kimberly A Wodzanowski, Ashley R Brown, Kendi Okuda, Amanda Monahan and 9 more

Open access · hybridAbstract read
In one paragraph

Article in Immunity, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
6.4field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

25 citing papers in PubMed, 40 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Review
  5. Programmed cell death of keratinocytes: an active driver in psoriasis.Apoptosis : an international journal on programmed cell death · 2026
    Review
  6. Article
  7. Article
  8. Review
  9. Article
  10. Review
  11. Review
  12. Dialogue between programmed cell death and psoriasis.Postepy dermatologii i alergologii · 2025
    Review
  13. Turmeric andJournal of inflammation research · 2025
    Article
  14. Article
  15. Review
  16. Review
  17. Macrophage P2YActa pharmaceutica Sinica. B · 2024
    Article
  18. Review
  19. Article
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

19 authors at 5 institutions in 1 country.

Ravi BharadwajProgram in Innate Immunity and Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA 01605, USA.
Christina F LusiDepartment of Biomedical Engineering, University of Massachusetts Amherst, Amherst, MA 01003, USA.
Siavash MashayekhChemistry and Biochemistry, University of Delaware, Newark, DE, USA.
Abhinit NagarProgram in Innate Immunity and Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA 01605, USA.
Malireddi SubbaraoDepartment of Immunology, St Jude Children's Research Hospital, Memphis, TN 38105, USA.
Griffin I KaneDepartment of Biomedical Engineering, University of Massachusetts Amherst, Amherst, MA 01003, USA.
Kimberly A WodzanowskiChemistry and Biochemistry, University of Delaware, Newark, DE, USA.
Ashley R BrownChemistry and Biochemistry, University of Delaware, Newark, DE, USA.
Kendi OkudaProgram in Innate Immunity and Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA 01605, USA.
Amanda MonahanProgram in Innate Immunity and Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA 01605, USA.
Donggi PaikProgram in Innate Immunity and Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA 01605, USA.
Anubhab NandyProgram in Innate Immunity and Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA 01605, USA.
Madison V AnonickChemistry and Biochemistry, University of Delaware, Newark, DE, USA.
William E GoldmanDepartment of Microbiology, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA.
Thirumala-Devi KannegantiDepartment of Immunology, St Jude Children's Research Hospital, Memphis, TN 38105, USA.
Megan H OrzalliProgram in Innate Immunity and Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA 01605, USA.
Catherine Leimkuhler GrimesChemistry and Biochemistry, University of Delaware, Newark, DE, USA.
Prabhani U AtukoraleDepartment of Biomedical Engineering, University of Massachusetts Amherst, Amherst, MA 01003, USA.
Neal SilvermanProgram in Innate Immunity and Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA 01605, USA. Electronic address: neal.silverman@umassmed.edu.
University of Massachusetts Chan Medical School · USUniversity of Delaware · USUniversity of Massachusetts Amherst · USSt. Jude Children's Research Hospital · USUniversity of North Carolina at Chapel Hill · US

Funding

From Drosophila Immunity to Anti-InflammatoriesR01AI060025 · NIAID · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI Neal Silverman · 2004 to 2026
$9.4M
Chemistry-Biology Interface Predoctoral Training Grant 2024-2029T32GM133395 · NIGMS · UNIVERSITY OF DELAWARE · PI Catherine Leimkuhler Grimes · 2019 to 2026
$3.7M
Peptidoglycan Fragment Library to Investigate Innate Immune ResponsesR01GM138599 · NIGMS · UNIVERSITY OF DELAWARE · PI GRIMES, CATHERINE LEIMKUHLER, REINECKER, HANS-CHRISTIAN · 2020 to 2023
$2.0M
Tumor-directed immunostimulatory nanoparticles for novel 'prime-pull'cancer vaccinationK22CA262355 · NCI · UNIVERSITY OF MASSACHUSETTS AMHERST · PI ATUKORALE, PRABHANI · 2021 to 2023
$583k
Regulation of antiviral immunity at barrier surfaces by interleukin-1 family cytokinesR00AI130258 · NIAID · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI ORZALLI, MEGAN HORN · 2020 to 2021
$495k
NCI NIH HHS K22 CA262355NIAID NIH HHS R00 AI130258NIAID NIH HHS R01 AI060025NIGMS NIH HHS R01 GM138599NIGMS NIH HHS T32 GM133395
6 · The paper itself

Abstract

Cytosolic innate immune sensing is critical for protecting barrier tissues. NOD1 and NOD2 are cytosolic sensors of small peptidoglycan fragments (muropeptides) derived from the bacterial cell wall. These muropeptides enter cells, especially epithelial cells, through unclear mechanisms. We previously implicated SLC46 transporters in muropeptide transport in Drosophila immunity. Here, we focused on Slc46a2, which was highly expressed in mammalian epidermal keratinocytes, and showed that it was critical for the delivery of diaminopimelic acid (DAP)-muropeptides and activation of NOD1 in keratinocytes, whereas the related transporter Slc46a3 was critical for delivering the NOD2 ligand MDP to keratinocytes. In a mouse model, Slc46a2 and Nod1 deficiency strongly suppressed psoriatic inflammation, whereas methotrexate, a commonly used psoriasis therapeutic, inhibited Slc46a2-dependent transport of DAP-muropeptides. Collectively, these studies define SLC46A2 as a transporter of NOD1-activating muropeptides, with critical roles in the skin barrier, and identify this transporter as an important target for anti-inflammatory intervention.

Indexed as

DermatitisMethotrexateAnimalsEpithelial CellsImmunity, InnateInflammationMammalsMiceNod1 Signaling Adaptor ProteinNod2 Signaling Adaptor ProteinPeptidoglycanMethotrexateNod1 Signaling Adaptor ProteinNod2 Signaling Adaptor ProteinPeptidoglycaninflammationinnate immunitymethotrexatemuropeptideNOD1psoriasisSLC transporters

Identifiers

PMID37116499
PMCPMC10195032
OpenAlexW4367322704

What OpenQuestion holds

Textmetadata
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Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.