Evidence map›Paper›PMID 19674980›Full record

ArticleAnnals of the rheumatic diseases2010

Toll-like receptor 7 (TLR7) modulates anti-nucleosomal autoantibody isotype and renal complement deposition in mice exposed to syngeneic late apoptotic cells.

Zi-jian Pan, Shannon Maier, Karen Schwarz, Jennifer Azbill, Shizuo Akira, Satoshi Uematsu, A Darise Farris

Abstract read
In one paragraph

Article in Annals of the rheumatic diseases, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
0.8field-weighted citation impact, top 27% 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

11 citing papers in PubMed, 13 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

7 authors at 3 institutions in 2 countries.

Zi-jian PanArthritis and Immunology Program, Oklahoma Medical Research Foundation, 825 NE 13th Street, Oklahoma City, Oklahoma 73104, USA.
Shannon Maier
Karen Schwarz
Jennifer Azbill
Shizuo Akira
Satoshi Uematsu
A Darise Farris
Oklahoma Medical Research Foundation · USOsaka University · JPUniversity of Oklahoma · US

Funding

SNP Confirmation and High Throughput Genotyping CoreP30AR053483 · NIAMS · OKLAHOMA MEDICAL RESEARCH FOUNDATION · PI JAMES, JUDITH A · 2007 to 2017
$6.7M
THROMBOCYTOPENIA AND THE GENETICS OF SEVERE LUPUSP50AR048940 · NIAMS · OKLAHOMA MEDICAL RESEARCH FOUNDATION · PI REICHLIN, MORRIS · 2002 to 2006
$5.8M
Molecular Basis of Immunity - Kirschtein-NRSAT32AI007633 · NIAID · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI CUNNINGHAM, MADELEINE W. · 2001 to 2022
$4.0M
T cell to tolerance &autoimmunity to nuclear antigen LaR01AI048097 · NIAID · OKLAHOMA MEDICAL RESEARCH FOUNDATION · PI FARRIS, A DARISE · 2001 to 2012
$2.3M
Tolerance to the Nuclear Antigen LaK02AI051647 · NIAID · OKLAHOMA MEDICAL RESEARCH FOUNDATION · PI FARRIS, A. DARISE · 2002 to 2006
$484k
NIAID NIH HHS K02 AI051647NIAID NIH HHS R01 AI048097NIAID NIH HHS R01 AI48097NIAID NIH HHS T32 AI007633NIAMS NIH HHS P30 AR053483NIAMS NIH HHS P50 AR048940NIAMS NIH HHS P50 AR048940-01
6 · The paper itself

Abstract

objectivesThe objectives of this study were to determine whether late apoptotic cell material directly induces autoantibodies characteristic of systemic lupus erythematosus (SLE) and to investigate the innate recognition pathways involved.

methodsB6, B6.MyD88(-/-), B6.TLR7(-/-) and B6.TLR9(-/-) mice were subcutaneously injected with B6 syngeneic late apoptotic thymocytes (SLATs) without adjuvant on days 0, 10, 24 and 37. Sera were tested for IgG antibodies to histones and double-stranded DNA (dsDNA) by ELISA and Crithidia luciliae indirect immunofluorescence. IgG and C3 deposition in kidney glomeruli was assessed by immunostaining and fluorescence microscopy.

resultsSLAT injections induced anti-dsDNA and anti-histone antibodies of the IgG1 and IgG2b isotypes in B6 but not MyD88(-/-) mice. TLR7(-/-) and TLR9(-/-) mice injected with SLATs produced delayed or slightly more robust responses, respectively. SLAT injections induced IgG deposits in renal glomeruli of B6, TLR7(-/-) and TLR9(-/-) mice that were absent in MyD88(-/-) mice. Unlike B6 and TLR9(-/-) animals, TLR7(-/-) mice failed to exhibit IgG colocalised glomerular C3 deposits and demonstrated autoantibodies of primarily the IgG2a isotype.

conclusionsLate apoptotic cell-induced anti-histone and anti-dsDNA antibodies require MyD88 but not Toll-like receptor (TLR)9. Moreover, TLR7 promotes glomerular C3 deposition, possibly through a mechanism of altered antibody isotype switching.

Indexed as

AnimalsAntibodies, AntinuclearApoptosisComplement C3FemaleHistonesImmunoglobulin GKidney GlomerulusLupus Erythematosus, SystemicMembrane GlycoproteinsMiceMice, Inbred C57BLMyeloid Differentiation Factor 88NucleosomesT-LymphocytesToll-Like Receptor 7Antibodies, AntinuclearComplement C3HistonesImmunoglobulin GMembrane GlycoproteinsMyd88 protein, mouseMyeloid Differentiation Factor 88NucleosomesTlr7 protein, mouseToll-Like Receptor 7

Identifiers

PMID19674980
PMCPMC2936817
OpenAlexW2139516209

What OpenQuestion holds

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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.