Evidence map›Paper›PMID 22491469›Full record

ArticleJournal of virology2012

Multifunctional CD4 cells expressing gamma interferon and perforin mediate protection against lethal influenza virus infection.

Deborah M Brown, Sarah Lee, Maria de la Luz Garcia-Hernandez, Susan L Swain

Open access · bronzeAbstract read
In one paragraph

Article in Journal of virology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 177 papers.

0numbers the graph read from it
0cells of the map it votes in
177citing papers in PubMed
8.7field-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

177 citing papers in PubMed, 244 citations in OpenAlex.

  1. Trial
  2. Trial
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  4. Trial
  5. L-type voltage-gated CaEMBO reports · 2026
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  7. A new 'K'ind of T helper cell.Nature immunology · 2026
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  11. Observational
  12. Article
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  14. Influenza A Virus andInternational journal of molecular sciences · 2025
    Article
  15. Article
  16. Review
  17. Article
  18. CD4Trends in cancer · 2024
    Review
  19. Article
  20. Article

117 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

4 authors at 1 institution in 1 country.

Deborah M BrownSchool of Biological Sciences, Nebraska Center for Virology, University of Nebraska-Lincoln, Lincoln, Nebraska, USA. dbrown7@unl.edu
Sarah Lee
Maria de la Luz Garcia-Hernandez
Susan L Swain
University of Nebraska–Lincoln · US

Funding

MOLECULAR BIOLOGY COREP01AG021600 · NIA · UNIVERSITY OF CONNECTICUT SCH OF MED/DNT · PI HAYNES, LAURA · 2003 to 2016
$24.4M
T cell memory to TB in the lungP01AI046530 · NIAID · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI SWAIN, SUSAN L · 1999 to 2013
$22.2M
VIRAL SHUTOFF OF HOST TRANSCRIPTION--PBCV-1 INFECTEDP20RR015635 · NCRR · UNIVERSITY OF NEBRASKA LINCOLN · PI WOOD, CHARLES · 2000 to 2009
$22.1M
CD4 effector contraction in influenzaR01AI076534 · NIAID · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI SWAIN, SUSAN L · 2009 to 2012
$1.7M
MUCOSAL IMMUNITY TO CHLAMYDIAL INFECTIONZ01AI000672 · NIAID · NIAID EXTRAMURAL ACTIVITIES · PI CALDWELL, HARLAN D · 1993 to 2008
$1.4M
Vaccine strategies that target cytolic CD4 T cells to the lung.R21AI090438 · NIAID · UNIVERSITY OF NEBRASKA LINCOLN · PI BROWN, DEBORAH M. · 2010 to 2011
$399k
Mechanisms of protection by CD4 cells against influenzaF32AI056962 · NIAID · TRUDEAU INSTITUTE, INC. · PI BROWN, DEBORAH M · 2004 to 2004
$47k
Intramural NIH HHS Z01 AI000672NCRR NIH HHS P20 RR015635NHLBI NIH HHS HL-69325NIAID NIH HHS AI-090438NIAID NIH HHS AI-46530NIAID NIH HHS F32 AI-056962NIAID NIH HHS F32 AI056962NIAID NIH HHS P01 AI046530NIAID NIH HHS R01 AI076534NIAID NIH HHS R21 AI090438NIA NIH HHS P01 AG021600PHS HHS NCRR P20-RR15635
6 · The paper itself

Abstract

CD4 effectors generated in vitro can promote survival against a highly pathogenic influenza virus via an antibody-independent mechanism involving class II-restricted, perforin-mediated cytotoxicity. However, it is not known whether CD4 cells activated during influenza virus infection can acquire cytolytic activity that contributes to protection against lethal challenge. CD4 cells isolated from the lungs of infected mice were able to confer protection against a lethal dose of H1N1 influenza virus A/Puerto Rico 8/34 (PR8). Infection of BALB/c mice with PR8 induced a multifunctional CD4 population with proliferative capacity and ability to secrete interleukin-2 (IL-2) and tumor necrosis factor alpha (TNF-α) in the draining lymph node (DLN) and gamma interferon (IFN-γ) and IL-10 in the lung. IFN-γ-deficient CD4 cells produced larger amounts of IL-17 and similar levels of TNF-α, IL-10, and IL-2 compared to wild-type (WT) CD4 cells. Both WT and IFN-γ(-/-) CD4 cells exhibit influenza virus-specific cytotoxicity; however, IFN-γ-deficient CD4 cells did not promote recovery after lethal infection as effectively as WT CD4 cells. PR8 infection induced a population of cytolytic CD4 effectors that resided in the lung but not the DLN. These cells expressed granzyme B (GrB) and required perforin to lyse peptide-pulsed targets. Lethally infected mice given influenza virus-specific CD4 cells deficient in perforin showed greater weight loss and a slower time to recovery than mice given WT influenza virus-specific CD4 cells. Taken together, these data strengthen the concept that CD4 T cell effectors are broadly multifunctional with direct roles in promoting protection against lethal influenza virus infection.

Indexed as

AnimalsCD4-Positive T-LymphocytesHumansInfluenza A Virus, H1N1 SubtypeInfluenza, HumanInterferon-gammaMiceMice, Inbred BALB CMice, Inbred C57BLMice, KnockoutPerforinInterferon-gammaPerforin

Identifiers

PMID22491469
PMCPMC3393557
OpenAlexW2158372391

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.