Evidence map›Paper›PMID 25296313›Full record

ArticleBiophysical journal2014

Giant unilamellar vesicles formed by hybrid films of agarose and lipids display altered mechanical properties.

Rafael B Lira, Rumiana Dimova, Karin A Riske

Open access · greenAbstract read
In one paragraph

Article in Biophysical journal, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
2.6field-weighted citation impact, top 10% 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

35 citing papers in PubMed, 84 citations in OpenAlex.

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  8. Methods to mechanically perturb and characterize GUV-based minimal cell models.Computational and structural biotechnology journal · 2023
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  15. To Close or to Collapse: The Role of Charges on Membrane Stability upon Pore Formation.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2021
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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

3 authors at 1 institution in 1 country.

Rafael B LiraDepartamento de Biofísica, Universidade Federal de São Paulo, São Paulo, Brazil; Department of Theory and Bio-Systems, Max Planck Institute of Colloids and Interfaces, Potsdam, Germany.
Rumiana DimovaDepartment of Theory and Bio-Systems, Max Planck Institute of Colloids and Interfaces, Potsdam, Germany.
Karin A RiskeDepartamento de Biofísica, Universidade Federal de São Paulo, São Paulo, Brazil. Electronic address: kariske@unifesp.br.
Max Planck Institute of Colloids and Interfaces · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Giant unilamellar vesicles (GUVs) are presumably the current most popular biomimetic membrane model. Preparation of GUVs in physiological conditions using the classical electroformation method is challenging. To circumvent these difficulties, a new method was recently reported, by which GUVs spontaneously swell from hybrid films of agarose and lipids. However, agarose is left encapsulated in the vesicles in different amounts. In this work, we thoroughly characterize the mechanical properties of these agarose-GUVs in response to electric pulses, which induce vesicle deformation and can lead to membrane poration. We show that the relaxation dynamics of deformed vesicles, both in the presence and absence of poration, is significantly slowed down for agarose-GUVs when compared to agarose-free GUVs. In the presence of poration, agarose polymers prevent complete pore closure and lead to high membrane permeability. A fraction of the vesicles were found to encapsulate agarose in the form of a gel-like meshwork. These vesicles rupture and open up after electroporation and the meshwork is expelled through a macropore. When the agarose-GUVs are heated above the melting temperature of agarose for 2 h before use, vesicle response is (partially) recovered due to substantial release of encapsulated agarose during temperature treatment. Our findings reveal potential artifactual behavior of agarose-GUVs in processes involving morphological changes in the membrane as well as poration.

Indexed as

Mechanical PhenomenaBiomechanical PhenomenaCell Membrane PermeabilityElectroporationKineticsPhospholipidsSepharoseTemperatureUnilamellar LiposomesPhospholipidsSepharoseUnilamellar Liposomes

Identifiers

PMID25296313
PMCPMC4190656
OpenAlexW2121381406

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.