Evidence map›Paper›PMID 19513781›Full record

ArticleThe Journal of membrane biology2009

Regulation of TLR2 expression and function in human airway epithelial cells.

Tamene Melkamu, Diane Squillace, Hirohito Kita, Scott M O'Grady

Abstract read
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In one paragraph

Article in The Journal of membrane biology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
1.6field-weighted citation impact, top 17% 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

23 citing papers in PubMed, 35 citations in OpenAlex.

  1. Immunogenicity of Gene and Cell Therapies.BioDrugs : clinical immunotherapeutics, biopharmaceuticals and gene therapy · 2026
    Review
  2. Elucidating the role of dsRNA sensing and Toll6 in antiviral responses ofFrontiers in cellular and infection microbiology · 2023
    Article
  3. Mathematical Modeling ofFrontiers in physiology · 2017
    Article
  4. Reduced Innate Immune Response to aFrontiers in cellular and infection microbiology · 2016
    Article
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  15. Modulation of γδ T cell responses by TLR ligands.Cellular and molecular life sciences : CMLS · 2011
    Review
  16. Article
  17. Article
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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 2 institutions in 1 country.

Tamene MelkamuDepartment of Veterinary Population Medicine, University of Minnesota, St. Paul, MN 55108, USA.
Diane Squillace
Hirohito Kita
Scott M O'Grady
Mayo Clinic · USUniversity of Minnesota · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Toll-like receptor (TLR1-6) mRNAs are expressed in normal human bronchial epithelial cells with higher basal levels of TLR3. TLR2 mRNA and plasma membrane protein expression was enhanced by pretreatment with Poly IC, a synthetic double-stranded RNA (dsRNA) known to activate TLR3. Poly IC also enhanced mRNA expression of adaptor molecules (MyD88 and TIRAP) and coreceptors (Dectin-1 and CD14) involved in TLR2 signaling. Additionally, mRNA expression of TLR3 and dsRNA-sensing proteins MDA5 and RIG-I increased following Poly IC treatment. In contrast, basal mRNA expression of TLR5 and TLR2 coreceptor CD36 was reduced by 77% and 62%, respectively. ELISA of apical and basolateral solutions from Poly IC-stimulated monolayers revealed significantly higher levels of IL-6 and GM-CSF compared with the TLR2 ligand PAM(3)CSK(4). Pretreatment with anti-TLR2 blocking antibody inhibited the PAM(3)CSK(4)-induced increase in IL-6 secretion after Poly IC exposure. An increase in IL-6 secretion was also observed in cells stimulated with Alternaria extract after pretreatment with Poly IC. However, IL-6 secretion was not stimulated by zymosan or lipothechoic acid (LTA). These data demonstrated that upregulation of TLR2 following exposure to dsRNA enhances functional responses of the airway epithelium to certain (PAM(3)CSK(4)), but not all (zymosan, LTA) TLR2 ligands and that this is likely due to differences in coreceptor expression.

Indexed as

Gene ExpressionBlotting, WesternBronchiCD36 AntigensCell LineDectin-1Enzyme-Linked Immunosorbent AssayEpithelial CellsHumansInterferon InducersInterleukin-6Lectins, C-TypeLipopeptidesLipopolysaccharide ReceptorsMembrane GlycoproteinsMembrane ProteinsCD36 AntigensDectin-1Interferon InducersInterleukin-6Lectins, C-TypeLipopeptidesLipopolysaccharide ReceptorsMembrane GlycoproteinsMembrane ProteinsMYD88 protein, humanMyeloid Differentiation Factor 88Nerve Tissue ProteinsPam(3)CSK(4) peptidePoly I-CReceptors, Interleukin-1TIRAP protein, humanToll-Like Receptor 2Toll-Like Receptor 3Toll-Like Receptor 4Toll-Like Receptor 5Toll-Like Receptor 6

Identifiers

PMID19513781
OpenAlexW1973392715

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.