Evidence map›Paper›PMID 17015634›Full record

ArticleThe Journal of experimental medicine2006

CCR5-dependent homing of naturally occurring CD4+ regulatory T cells to sites of Leishmania major infection favors pathogen persistence.

Ekaterina Yurchenko, Michael Tritt, Valerie Hay, Ethan M Shevach, Yasmine Belkaid, Ciriaco A Piccirillo

Open access · greenAbstract read
In one paragraph

Article in The Journal of experimental medicine, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 111 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
111citing papers in PubMed, 1 pooled it
20.0field-weighted citation impact, top 1% 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

111 citing papers in PubMed, 1 synthesis or guideline pooled it, 223 citations in OpenAlex.

  1. Pooled it
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  7. 5-HTJournal of advanced research · 2025
    Article
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  12. Article
  13. The role of regulatory T cells in vitiligo and therapeutic advances: a mini-review.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2024
    Review
  14. Article
  15. Article
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  17. Article
  18. CCR5 promotes the migration of CD8bioRxiv : the preprint server for biology · 2023
    Article
  19. Review
  20. Review

51 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 3 countries.

Ekaterina YurchenkoDepartment of Microbiology and Immunology, McGill University, Montreal, H3A 2B4, Canada.
Michael Tritt
Valerie Hay
Ethan M Shevach
Yasmine Belkaid
Ciriaco A Piccirillo
Bipar · FRMcGill University Health Centre · CANational Institutes of Health · US

Funding

Role of Regulatory T Cells in Parasitic InfectionsZ01AI000955 · NIAID · NIAID EXTRAMURAL ACTIVITIES · PI BELKAID, YASMINE · 2005 to 2008
$4.4M
Role of Regulatory T Cells in Parasitic InfectionsZIAAI000955 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI BELKAID, YASMINE · 2009 to 2010
$1.6M
6 · The paper itself

Abstract

Pathogen persistence after clinical cure is a hallmark of many chronic infections. Previously, we showed that naturally occurring CD4+CD25+ regulatory T (nTreg) cells rapidly accumulate within chronic dermal sites of Leishmania major infection where they suppress anti-pathogen CD4+ T cell responses, favor parasite persistence and dermal pathology, and consequently control concomitant immunity. Here, we postulated that chemokines might direct nTreg cell homing in sites of infection and show that CD4+CD25+ nTreg cells, compared with normal CD4+ T cells, preferentially express the CCR5 chemokine receptor, which enables them to migrate in response to CCR5 ligands in vitro. We show that in contrast to their wild-type (WT) counterparts, CCR5-/- CD4+CD25+ nTreg cells resulted in an increased magnitude of parasite-specific, interferon gamma-producing CD4+ T cells within infection sites, dramatically reduced parasite numbers, and potent resistance to infection, a finding consistent with the clinical outcome of infected CCR5-/- mice. Interestingly, this resistance was related to an inefficient migration of CCR5-/- nTreg cells to infected dermal sites compared with WT nTreg cells. Thus, this study shows that CCR5 directs the homing of CD4+CD25+ nTreg cells to L. major-infected dermal sites where they promote the establishment of infection and long-term survival of the parasite in the immune host.

Indexed as

AnimalsChemotaxis, LeukocyteLeishmania majorLeishmaniasis, CutaneousMiceMice, Inbred C57BLMice, KnockoutReceptors, CCR5T-Lymphocytes, RegulatoryReceptors, CCR5

Identifiers

PMID17015634
PMCPMC2118140
OpenAlexW2110502611

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.