Evidence map›Paper›PMID 22871421›Full record

ArticleBiomaterials2012

Cystamine-terminated poly(beta-amino ester)s for siRNA delivery to human mesenchymal stem cells and enhancement of osteogenic differentiation.

Stephany Y Tzeng, Ben P Hung, Warren L Grayson, Jordan J Green

Open access · greenAbstract read
In one paragraph

Article in Biomaterials, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
4.2field-weighted citation impact, top 5% 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

45 citing papers in PubMed, 99 citations in OpenAlex.

  1. Review
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  14. Cancer-Targeting Nanoparticles for Combinatorial Nucleic Acid Delivery.Advanced materials (Deerfield Beach, Fla.) · 2020
    Review
  15. Article
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  17. Article
  18. Customizable Lipid Nanoparticle Materials for the Delivery of siRNAs and mRNAs.Angewandte Chemie (International ed. in English) · 2018
    Article
  19. Article
  20. 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

4 authors at 2 institutions in 1 country.

Stephany Y TzengDepartment of Biomedical Engineering, Translational Tissue Engineering Center, and Institute for NanoBiotechnology, Johns Hopkins University School of Medicine, 400 N. Broadway, Baltimore, MD 21231, USA.
Ben P Hung
Warren L Grayson
Jordan J Green
Johns Hopkins Medicine · USJohns Hopkins University · US

Funding

Wilmer Core Grant for Vision ResearchP30EY001765 · NEI · JOHNS HOPKINS UNIVERSITY · PI Jiang Qian · 1985 to 2026
$22.1M
Nanoparticle-mediated peptide delivery for breast cancerR21CA152473 · NCI · JOHNS HOPKINS UNIVERSITY · PI GREEN, JORDAN · 2011 to 2012
$392k
NCI NIH HHS R21 CA152473NCI NIH HHS R21CA152473NEI NIH HHS EY001765
6 · The paper itself

Abstract

Enhancing human mesenchymal stem cell (hMSC) differentiation via RNA interference (RNAi) could provide an effective way of controlling cell fate for tissue engineering, but a safe and effective delivery vehicle must first be developed. Here, we evaluated an array of synthetic end-modified poly(beta-amino ester) (PBAE)-based nanoparticles to optimize siRNA delivery into hMSCs. In general, cystamine-terminated polymers caused the most knockdown, with the best polymer achieving 91% knockdown 20 days post-transfection. Binding studies revealed that the cystamine-terminated polymer bound siRNA tightly at lower weight ratios of polymer to siRNA but then efficiently released siRNA upon exposure to a reducing environment, suggesting that this class of PBAEs can form tight initial interactions with its cargo and then cause efficient, environmentally-triggered release in the cytoplasm. Finally, we tested a functional application of this system by transfecting hMSCs with siRNA against an inhibitor of osteogenesis, B-cell lymphoma (Bcl)-like protein 2 (BCL2L2). This resulted in enhanced osteogenesis over 4 weeks as evidenced by Alizarin Red S staining and calcium quantification. The bioreducible PBAE/siRNA nanoparticles developed here can provide a means of safe and effective control of hMSC differentiation for a wide variety of applications.

Indexed as

OsteogenesisTransfectionApoptosis Regulatory ProteinsCell DifferentiationCell LineCystamineHumansMesenchymal Stem CellsNanoparticlesPolymersRNA InterferenceRNA, Small InterferingTransduction, GeneticApoptosis Regulatory ProteinsBCL2L2 protein, humanCystaminepoly(beta-amino ester)PolymersRNA, Small Interfering

Identifiers

PMID22871421
PMCPMC3432640
OpenAlexW2088564088

What OpenQuestion holds

Textmetadata
LicenceTDM
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.