Evidence map›Paper›PMID 18601962›Full record

ArticleJournal of controlled release : official journal of the Controlled Release Society2008

Triggered release of siRNA from poly(ethylene glycol)-protected, pH-dependent liposomes.

Debra T Auguste, Kay Furman, Andrew Wong, Jason Fuller, Steven P Armes, Timothy J Deming, Robert Langer

Open access · greenAbstract read
In one paragraph

Article in Journal of controlled release : official journal of the Controlled Release Society, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
5.2field-weighted citation impact, top 4% 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

27 citing papers in PubMed, 104 citations in OpenAlex.

  1. Review
  2. Article
  3. Isolation of Primary Mouse Lung Endothelial Cells.Journal of visualized experiments : JoVE · 2021
    Article
  4. Article
  5. Overcoming Barriers for siRNA Therapeutics: From Bench to Bedside.Pharmaceuticals (Basel, Switzerland) · 2020
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. siRNA Delivery by Stimuli-Sensitive Nanocarriers.Current pharmaceutical design · 2015
    Review
  13. Cationic lipid nanodisks as an siRNA delivery vehicle.Biochemistry and cell biology = Biochimie et biologie cellulaire · 2014
    Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Review
  20. Scalable method to produce biodegradable nanoparticles that rapidly penetrate human mucus.Journal of controlled release : official journal of the Controlled Release Society · 2013
    Article
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 4 institutions in 2 countries.

Debra T AugusteDepartment of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA.
Kay Furman
Andrew Wong
Jason Fuller
Steven P Armes
Timothy J Deming
Robert Langer
Massachusetts Institute of Technology · USHarvard University · USUniversity of California, Santa Barbara · USUniversity of Sheffield · GB

Funding

CONTROLLED RELEASE OF MACROMOLECULESR01EB000244 · NIBIB · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI LANGER, ROBERT SAMUEL, TRAVERSO, CARLO GIOVANNI · 2002 to 2021
$6.1M
Controlled Release of MacromoleculesR37EB000244 · NIBIB · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI LANGER, ROBERT SAMUEL · 2008 to 2017
$3.9M
NIBIB NIH HHS EB000244NIBIB NIH HHS R01 EB000244NIBIB NIH HHS R37 EB000244
6 · The paper itself

Abstract

The ability of small interfering RNA (siRNA) to regulate gene expression has potential therapeutic applications, but its use is limited by inefficient delivery. Triggered release of adsorbed poly(ethylene glycol) (PEG)-b-polycation polymers from pH-dependent (PD) liposomes enables protection from immune recognition during circulation (pH 7.4) and subsequent intracellular delivery of siRNA within the endosome (pH ~5.5). Polycationic blocks, based on either poly[2-(dimethylamino)ethyl methacrylate] (31 or 62 DMA repeat units) or polylysine (21 K repeat units), act as anchors for a PEG (113 ethylene glycol repeat units) protective block. Incorporation of 1,2-dioleoyl-3-dimethylammonium-propane (DAP), a titratable lipid, increases the liposome's net cationic character within acidic environments, resulting in polymer desorption and membrane fusion. Liposomes encapsulating siRNA demonstrate green fluorescent protein (GFP) silencing in genetically-modified, GFP-expressing HeLa cells and glyceraldehyde-3-phosphate dehydrogenase (GAPD) knockdown in human umbilical vein endothelial cells (HUVEC). Bare and PD liposomes coated with PEG113-DMA31 exhibit a 0.16+/-0.2 and 0.32+/-0.3 fraction of GFP knockdown, respectively. In contrast, direct siRNA administration and Oligofectamine complexed siRNA reduce GFP expression by 0.06+/-0.02 and 0.14+/-0.02 fractions, respectively. Our in vitro data indicates that polymer desorption from PD liposomes enhances siRNA-mediated gene knockdown.

Indexed as

Gene Transfer TechniquesAdsorptionCells, CulturedEndothelial CellsGene ExpressionGlyceraldehyde-3-Phosphate DehydrogenasesGreen Fluorescent ProteinsHeLa CellsHumansHydrogen-Ion ConcentrationLipidsLiposomesMethacrylatesParticle SizePhosphatidylcholinesPhosphatidylethanolamines1,2-dioleoylphosphatidylserine1,2-oleoylphosphatidylcholineGlyceraldehyde-3-Phosphate DehydrogenasesGreen Fluorescent ProteinsLipidsLiposomesMethacrylatesN-(7-nitrobenz-2-oxa-1,3-diazol-4-yl)phosphatidylethanolamineN-(lissamine rhodamine B sulfonyl)-1,2-dioleoylphosphatidylethanolamineoligofectaminePhosphatidylcholinesPhosphatidylethanolaminesPhosphatidylserinespoly(ethylene glycol)-dimethacrylatePolyethylene GlycolsRhodaminesRNA, Small Interfering

Identifiers

PMID18601962
PMCPMC2608725
OpenAlexW2035801841

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.