Evidence map›Paper›PMID 25956320›Full record

ArticleCellular and molecular life sciences : CMLS2015

Critical residues involved in Toll-like receptor 4 activation by cationic lipid nanocarriers are not located at the lipopolysaccharide-binding interface.

Caroline Lonez, Kate L Irvine, Malvina Pizzuto, Boris I Schmidt, Nick J Gay, Jean-Marie Ruysschaert, Monique Gangloff, Clare E Bryant

Open access · hybridAbstract read
In one paragraph

Article in Cellular and molecular life sciences : CMLS, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
0.8field-weighted citation impact, top 29% 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

28 citing papers in PubMed, 49 citations in OpenAlex.

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  10. Substituting racemic ionizable lipids with stereopure ionizable lipids can increase mRNA delivery.Journal of controlled release : official journal of the Controlled Release Society · 2023
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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

8 authors at 2 institutions in 2 countries.

Caroline LonezDepartment of Veterinary Medicine, University of Cambridge, Cambridge, UK. clonez@ulb.ac.be.
Kate L IrvineDepartment of Veterinary Medicine, University of Cambridge, Cambridge, UK.
Malvina PizzutoStructure and Function of Biological Membranes, Université Libre de Bruxelles, Brussels, Belgium.
Boris I SchmidtStructure and Function of Biological Membranes, Université Libre de Bruxelles, Brussels, Belgium.
Nick J GayDepartment of Biochemistry, University of Cambridge, Cambridge, UK.
Jean-Marie RuysschaertStructure and Function of Biological Membranes, Université Libre de Bruxelles, Brussels, Belgium.
Monique GangloffDepartment of Biochemistry, University of Cambridge, Cambridge, UK.
Clare E BryantDepartment of Veterinary Medicine, University of Cambridge, Cambridge, UK.
University of Cambridge · GBUniversité Libre de Bruxelles · BE

Funding

Medical Research Council G1000133Wellcome Trust 100321
6 · The paper itself

Abstract

DiC14-amidine is a cationic lipid that was originally designed as a lipid nanocarrier for nucleic acid transport, and turned out to be a Toll-like receptor 4 (TLR4) agonist as well. We found that while E. coli lipopolysaccharide (LPS) is a TLR4 agonist in all species, diC14-amidine nanoliposomes are full agonists for human, mouse and cat receptors but weak horse agonists. Taking advantage of this unusual species specificity, we used chimeric constructs based on the human and horse sequences and identified two regions in the human TLR4 that modulate the agonist activity of diC14-amidine. Interestingly, these regions lie outside the known LPS-binding domain. Competition experiments also support our hypothesis that diC14-amidine interacts primarily with TLR4 hydrophobic crevices located at the edges of the TLR4/TLR4* dimerization interface. We have characterized potential binding modes using molecular docking analysis and suggest that diC14-amidine nanoliposomes activate TLR4 by facilitating its dimerization in a process that is myeloid differentiation 2 (MD-2)-dependent and cluster of differentiation 14 (CD14)-independent. Our data suggest that TLR4 may be activated through binding at different anchoring points, expanding the repertoire of TLR4 ligands to non-MD-2-binding lipids.

Indexed as

Amino Acid SequenceAnimalsBinding SitesHEK293 CellsHorsesHumansLipid MetabolismLipopolysaccharide ReceptorsLipopolysaccharidesLymphocyte Antigen 96MiceModels, MolecularMolecular Docking SimulationRecombinant Fusion ProteinsSignal TransductionSpecies SpecificityLipopolysaccharide ReceptorsLipopolysaccharidesLymphocyte Antigen 96Recombinant Fusion ProteinsToll-Like Receptor 4Activation mechanismCationic lipidNanoparticleSpecies specificityToll-like receptor

Identifiers

PMID25956320
PMCPMC4575701
OpenAlexW251007600

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.