Evidence map›Paper›PMID 21456086›Full record

ArticleSmall (Weinheim an der Bergstrasse, Germany)2011

Protein nanocapsules containing doxorubicin as a pH-responsive delivery system.

Dongmei Ren, Felix Kratz, Szu-Wen Wang

Abstract read
In one paragraph

Article in Small (Weinheim an der Bergstrasse, Germany), 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
–field-weighted citation impact
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

44 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Review
  12. Advancements in protein nanoparticle vaccine platforms to combat infectious disease.Wiley interdisciplinary reviews. Nanomedicine and nanobiotechnology · 2021
    Review
  13. Article
  14. Review
  15. Ferritin Nanocages for Protein Delivery to Tumor Cells.Molecules (Basel, Switzerland) · 2020
    Review
  16. Article
  17. Protein-based nanoparticles in cancer vaccine development.Nanomedicine : nanotechnology, biology, and medicine · 2019
    Review
  18. Article
  19. Review
  20. Review
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.

Dongmei RenDepartment of Chemical Engineering and Materials Science, University of California, 916 Engineering Tower, Irvine, CA 92697-2575, USA.
Felix Kratz
Szu-Wen Wang

Funding

Multifunctional Protein Nanocapsules for Targeted DeliveryR21EB010161 · NIBIB · UNIVERSITY OF CALIFORNIA-IRVINE · PI WANG, SZU-WEN · 2010 to 2011
$375k
NIBIB NIH HHS 5R21EB10161-2NIBIB NIH HHS R21 EB010161
6 · The paper itself

Abstract

The E2 component of pyruvate dehydrogenase is engineered to form a caged, hollow dodecahedral protein assembly, and the feasibility of this scaffold to be used as a drug delivery system is examined by introducing cysteines to the internal cavity (D381C). The fluorescent dye Alexa Fluor 532 (AF532M) and the antitumor drug doxorubicin are coupled to this internal cavity through maleimides on the guest molecules. The viruslike particle's structure and stability remain intact after binding of the molecules within the interior of the nanocapsule. The pH-dependent hydrolysis of a hydrazone linkage to doxorubicin allows 90% drug release from the D381C scaffold within 72 h at pH 5.0. Fluorescence microscopy of MDA-MB-231 breast cancer cells indicates significant uptake of the D381C scaffold incorporating AF532M and doxorubicin, and suggests internalization of the nanoparticles through endocytosis. It is observed that the protein scaffold does not induce cell death, but doxorubicin encapsulated in D381C is indeed cytotoxic, yielding an IC(50) of 1.3 ± 0.3 μM. While the majority of particulate-based drug delivery strategies encapsulates drugs within polymeric nanoparticles, these results show the potential for using macromolecular protein assemblies. This approach yields a promising new opportunity for designing highly defined nanomaterials for therapeutic delivery.

Indexed as

Drug Delivery SystemsCell DeathCell Line, TumorDihydrolipoyllysine-Residue AcetyltransferaseDose-Response Relationship, DrugDoxorubicinEndocytosisHumansHydrogen-Ion ConcentrationMicroscopy, ConfocalNanocapsulesProtein StabilityDihydrolipoyllysine-Residue AcetyltransferaseDoxorubicinNanocapsules

Identifiers

PMID21456086
PMCPMC3118673

What OpenQuestion holds

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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.