Evidence map›Paper›PMID 31001985›Full record

ArticleNano letters2019

Super-resolution Imaging of Structure, Molecular Composition, and Stability of Single Oligonucleotide Polyplexes.

Natalia Feiner-Gracia, R Alis Olea, Robert Fitzner, Najoua El Boujnouni, Alexander H van Asbeck, Roland Brock, Lorenzo Albertazzi

Open access · hybridAbstract read
In one paragraph

Article in Nano letters, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
2.3field-weighted citation impact, top 11% 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

16 citing papers in PubMed, 36 citations in OpenAlex.

  1. Review
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  3. Review
  4. Article
  5. Article
  6. Article
  7. Engineering poly- and micelleplexes for nucleic acid delivery - A reflection on their endosomal escape.Journal of controlled release : official journal of the Controlled Release Society · 2023
    Review
  8. Review
  9. Review
  10. Article
  11. Applications and challenges of biomaterial mediated mRNA delivery.Exploration of targeted anti-tumor therapy · 2022
    Review
  12. Article
  13. Article
  14. Review
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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

7 authors at 3 institutions in 2 countries.

Natalia Feiner-GraciaNanoscopy for Nanomedicine Group, Institute for Bioengineering of Catalonia (IBEC) , The Barcelona Institute of Science and Technology (BIST) , Carrer Baldiri Reixac 15-21, 08024 Barcelona , Spain.
R Alis OleaNanoscopy for Nanomedicine Group, Institute for Bioengineering of Catalonia (IBEC) , The Barcelona Institute of Science and Technology (BIST) , Carrer Baldiri Reixac 15-21, 08024 Barcelona , Spain.
Robert FitznerDepartment of Mathematics and Computer Science , Eindhoven University of Technology , Post Office Box 513, 5600 MD Eindhoven , The Netherlands.
Najoua El BoujnouniDepartment of Biochemistry, Radboud Institute for Molecular Life Sciences , Radboud University Medical Center , Nijmegen , The Netherlands.
Alexander H van AsbeckDepartment of Biochemistry, Radboud Institute for Molecular Life Sciences , Radboud University Medical Center , Nijmegen , The Netherlands.
Roland BrockDepartment of Biochemistry, Radboud Institute for Molecular Life Sciences , Radboud University Medical Center , Nijmegen , The Netherlands.ORCID 0000-0003-1395-6127
Lorenzo AlbertazziNanoscopy for Nanomedicine Group, Institute for Bioengineering of Catalonia (IBEC) , The Barcelona Institute of Science and Technology (BIST) , Carrer Baldiri Reixac 15-21, 08024 Barcelona , Spain.ORCID 0000-0002-6837-0812
Radboud University Nijmegen · NLInstitute for Bioengineering of Catalonia · ESEindhoven University of Technology · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The successful application of gene therapy relies on the development of safe and efficient delivery vectors. Cationic polymers such as cell-penetrating peptides (CPPs) can condense genetic material into nanoscale particles, called polyplexes, and induce cellular uptake. With respect to this point, several aspects of the nanoscale structure of polyplexes have remained elusive because of the difficulty in visualizing the molecular arrangement of the two components with nanometer resolution. This limitation has hampered the rational design of polyplexes based on direct structural information. Here, we used super-resolution imaging to study the structure and molecular composition of individual CPP-mRNA polyplexes with nanometer accuracy. We use two-color direct stochastic optical reconstruction microscopy (dSTORM) to unveil the impact of peptide stoichiometry on polyplex structure and composition and to assess their destabilization in blood serum. Our method provides information about the size and composition of individual polyplexes, allowing the study of such properties on a single polyplex basis. Furthermore, the differences in stoichiometry readily explain the differences in cellular uptake behavior. Thus, quantitative dSTORM of polyplexes is complementary to the currently used characterization techniques for understanding the determinants of polyplex activity in vitro and inside cells.

Indexed as

Genetic TherapyCationsCell-Penetrating PeptidesGenetic VectorsGreen Fluorescent ProteinsHumansImage Processing, Computer-AssistedMolecular ImagingNanoparticlesOligonucleotidesPolymersRNA, MessengerTransfectionCationsCell-Penetrating PeptidesGreen Fluorescent ProteinsOligonucleotidesPolymersRNA, MessengerdSTORMgene deliverypolyplexesstabilitySuper-resolution microscopy

Identifiers

PMID31001985
PMCPMC6509642
OpenAlexW2939162140

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.