Evidence map›Paper›PMID 22128247›Full record

ArticleInternational journal of nanomedicine2011

Novel RGD-lipid conjugate-modified liposomes for enhancing siRNA delivery in human retinal pigment epithelial cells.

Cheng-Wei Chen, Da-Wen Lu, Ming-Kung Yeh, Chia-Yang Shiau, Chiao-Hsi Chiang

Open access · goldAbstract read
In one paragraph

Article in International journal of nanomedicine, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.7field-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

21 citing papers in PubMed, 91 citations in OpenAlex.

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  13. Nanomicelle-Assisted Targeted Ocular Delivery with Enhanced Antiinflammatory Efficacy In Vivo.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2018
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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

5 authors at 3 institutions in 3 countries.

Cheng-Wei ChenGraduate Institute of Life Sciences, National Defense Medical Center, Neihu, Taipei, Taiwan.
Da-Wen Lu
Ming-Kung Yeh
Chia-Yang Shiau
Chiao-Hsi Chiang
Institute of Life Sciences · INPost Graduate Medical Institute · PKTri-Service General Hospital · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundHuman retinal pigment epithelial cells are promising target sites for small interfering RNA (siRNA) that might be used for the prevention and/or treatment of choroidal neovascularization by inhibiting the expression of angiogenic factor; for example, by downregulating expression of the vascular endothelial growth factor gene.

methodsA novel functional lipid, DSPE-PEG-RGD, a Arg(R)-Gly(G)-Asp(D) motif peptide conjugated to 1, 2-distearoyl-sn-glycero-3-phosphoethanolamine- N-[maleimide (polyethylene glycol)-2000], was synthesized for the preparation of siRNA-loaded RGD-PEGylated liposomes to enhance uptake of encapsulated siRNA in retinal pigment epithelial cells. Various liposomes, with 1 mol% and 5 mol% PEGylated lipid or 1 mol% and 5 mol% RGD-PEGylated lipid, were fabricated.

resultsCharacterization of the liposomes, including siRNA entrapment efficiency, average particle size and ζ-potential, were determined to be as follows: >96%, 129.7 ± 51 to 230.7 ± 60.7 nm, and 17.3 ± 0.6 to 32 ± 1.3 mV, respectively. For the in vitro retinal pigment epithelial cell studies, the RGD-PEGylated liposomes had high delivery efficiency with siRNA delivery, about a four-fold increase compared with the PEGylated liposomes. Comparison of the various liposomes showed that the 1 mol% RGD-modified liposome had less cytotoxicity and higher siRNA delivery efficiency than the other liposomes. The antibody blocking assay confirmed that uptake of the 1 mol% RGD-PEGylated liposome was via integrin receptor- mediated endocytosis in retinal pigment epithelial cells.

conclusionThe results of this study suggest that RGD-PEGylated liposomes might be useful for siRNA delivery into retinal pigment epithelial cells by integrin receptor-medicated endocytosis.

Indexed as

Cell LineCell SurvivalEndocytosisHistocytochemistryHumansIntegrin alphaVbeta3LiposomesMicroscopy, FluorescenceOligopeptidesParticle SizePhosphatidylethanolaminesPolyethylene GlycolsRetinal Pigment EpitheliumRNA, Small Interfering1,2-distearoylphosphatidylethanolaminearginyl-glycyl-aspartic acidIntegrin alphaVbeta3LiposomesOligopeptidesPhosphatidylethanolaminesPolyethylene GlycolsRNA, Small InterferingArg-Gly-Aspliposomeretinal pigment epithelial cellsRGDsmall interfering RNA

Identifiers

PMID22128247
PMCPMC3225218
OpenAlexW2094944900

What OpenQuestion holds

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Registered trials

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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.