Evidence map›Paper›PMID 19667042›Full record

ArticleInfection and immunity2009

Chlamydia muridarum-specific CD4 T-cell clones recognize infected reproductive tract epithelial cells in an interferon-dependent fashion.

Krupakar Jayarapu, Micah S Kerr, Adrian Katschke, Raymond M Johnson

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
1.4field-weighted citation impact, top 20% 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

18 citing papers in PubMed, 26 citations in OpenAlex.

  1. Cytotoxic CD4+ T Cells Are Induced during Infection with Chlamydia trachomatis.Journal of immunology (Baltimore, Md. : 1950) · 2024
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  5. Modulation of Immune Response toFrontiers in cellular and infection microbiology · 2021
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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

4 authors at 1 institution in 1 country.

Krupakar JayarapuDivision of Infectious Diseases, Department of Medicine, Indiana University School of Medicine, 545 Barnhill Drive, #435, Indianapolis, IN 46202, USA.
Micah S Kerr
Adrian Katschke
Raymond M Johnson
Indiana University – Purdue University Indianapolis · US

Funding

Immunology and Infectious Diseases Training ProgramT32AI060519 · NIAID · INDIANA UNIV-PURDUE UNIV AT INDIANAPOLIS · PI MARK H KAPLAN · 2004 to 2026
$6.0M
Cellular Immunity to Chlamydua at the Epithelial InterfaceR01AI070514 · NIAID · INDIANA UNIV-PURDUE UNIV AT INDIANAPOLIS · PI JOHNSON, RAYMOND MORRIS · 2007 to 2010
$1.5M
NIAID NIH HHS 1R01AI070514-01A1NIAID NIH HHS R01 AI070514NIAID NIH HHS T32 AI060519NIAID NIH HHS T32-AI060519
6 · The paper itself

Abstract

During natural infections Chlamydia trachomatis urogenital serovars replicate predominantly in the epithelial cells lining the reproductive tract. This tissue tropism poses a unique challenge to host cellar immunity and future vaccine development. In the experimental mouse model, CD4 T cells are necessary and sufficient to clear Chlamydia muridarum genital tract infections. This implies that resolution of genital tract infection depends on CD4 T-cell interactions with infected epithelial cells. However, no laboratory has shown that Chlamydia-specific CD4 T cells can recognize Chlamydia antigens presented by major histocompatibility complex class II (MHC-I) molecules on epithelial cells. In this report we show that MHC-II-restricted Chlamydia-specific CD4 T-cell clones recognize infected upper reproductive tract epithelial cells as early as 12 h postinfection. The timing of recognition and degree of T-cell activation are dependent on the interferon (IFN) milieu. Beta IFN (IFN-beta) and IFN-gamma have different effects on T-cell activation, with IFN-beta blunting IFN-gamma-induced upregulation of epithelial cell surface MHC-II and T-cell activation. Individual CD4 T-cell clones differed in their degrees of dependence on IFN-gamma-regulated MHC-II for controlling Chlamydia replication in epithelial cells in vitro. We discuss our data as they relate to published studies with IFN knockout mice, proposing a straightforward interpretation of the existing literature based on CD4 T-cell interactions with the infected reproductive tract epithelium.

Indexed as

AnimalsCD4-Positive T-LymphocytesChlamydia muridarumEpithelial CellsFemaleHumansInterferonsLymphocyte ActivationMiceMice, Inbred BALB CUrinary TractInterferons

Identifiers

PMID19667042
PMCPMC2747947
OpenAlexW2078297439

What OpenQuestion holds

Textmetadata
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.