Evidence map›Paper›PMID 22837197›Full record

ArticleJournal of virology2012

TLR7 recognition is dispensable for influenza virus A infection but important for the induction of hemagglutinin-specific antibodies in response to the 2009 pandemic split vaccine in mice.

Victoria Jeisy-Scott, Jin Hyang Kim, William G Davis, Weiping Cao, Jacqueline M Katz, Suryaprakash Sambhara

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 49 papers.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed
3.9field-weighted citation impact, top 7% 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

49 citing papers in PubMed, 71 citations in OpenAlex.

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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

6 authors at 2 institutions in 1 country.

Victoria Jeisy-ScottInfluenza Division, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA.
Jin Hyang Kim
William G Davis
Weiping Cao
Jacqueline M Katz
Suryaprakash Sambhara
Centers for Disease Control and Prevention · USNational Center for Immunization and Respiratory Diseases · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Recognition of pathogen-associated molecular patterns by pattern recognition receptors of the innate immune system is crucial for the initiation of innate and adaptive responses and for immunological memory. We investigated the role of TLR7 in the induction of adaptive immunity and long-term memory following influenza virus infection and vaccination in C57BL/6 mice. During infection with influenza A/PR8/34 virus, the absence of either TLR7 or MyD88 leads to reduced virus-specific antibodies in the serum and antibody-secreting cells in their secondary lymphoid organs, particularly in bone marrow. In spite of this, the absence of TLR7/MyD88 signaling did not impair the production of protective antibodies. Following immunization with the 2009 pandemic inactivated split vaccine, TLR7(-/-) mice had significantly lower levels of germinal center formation, antibody-secreting cells, and circulating influenza virus-specific antibodies than control animals. Consequently, TLR7(-/-) mice failed to develop protective immunological memory upon challenge. Furthermore, the immunogenicity of the split vaccine was likely due to TLR7 recognition of virion RNA, as its removal from the split vaccine significantly reduced the levels of influenza virus-specific antibodies and compromised the vaccine protective efficacy in mice. Taken together, our data demonstrate that TLR7 plays an important role in vaccine-induced humoral immune responses to influenza virus through the interaction with viral RNA present in the split vaccine.

Indexed as

AnimalsAntibodies, ViralAntibody-Producing CellsGerminal CenterHemagglutinin Glycoproteins, Influenza VirusImmunologic MemoryInfluenza A Virus, H1N1 SubtypeInfluenza VaccinesMembrane GlycoproteinsMiceMice, Inbred C57BLMice, KnockoutMyeloid Differentiation Factor 88Orthomyxoviridae InfectionsRNA, ViralToll-Like Receptor 7Antibodies, ViralH1N1 virus hemagglutininHemagglutinin Glycoproteins, Influenza VirusInfluenza VaccinesMembrane GlycoproteinsMyd88 protein, mouseMyeloid Differentiation Factor 88RNA, ViralTlr7 protein, mouseToll-Like Receptor 7

Identifiers

PMID22837197
PMCPMC3457183
OpenAlexW1978131385

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.