Cited by 95RNA Interference and Gene DeliveryNanoparticle-Based Drug DeliveryDendrimers and Hyperbranched Polymers

Mechanisms of nanoparticle-mediated siRNA transfection by melittin-derived peptides

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Hou, Kirk K., Pan, Hua, Ratner, Lee, Schlesinger, Paul H., Wickline, Samuel A.·2013·ACS Nano

Abstract

Traditional peptide-mediated siRNA transfection via peptide transduction domains exhibits limited cytoplasmic delivery of siRNA due to endosomal entrapment. This work overcomes these limitations with the use of membrane-destabilizing peptides derived from melittin for the knockdown of NFkB signaling in a model of adult T-cell leukemia/lymphoma. While the mechanism of siRNA delivery into the cytoplasmic compartment by peptide transduction domains has not been well studied, our analysis of melittin derivatives indicates that concurrent nanocomplex disassembly and peptide-mediated endosomolysis are crucial to siRNA transfection. Importantly, in the case of the most active derivative, p5RHH, this process is initiated by acidic pH, indicating that endosomal acidification after macropinocytosis can trigger siRNA release into the cytoplasm. These data provide general principles regarding nanocomplex response to endocytosis, which may guide the development of peptide/siRNA nanocomplex-based transfection.

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Authors
Hou, K. K., Pan, H., Ratner, L., Schlesinger, P. H., & Wickline, S. A.
Affiliations
Washington University in St. Louis (US)
Corresponding author
Wickline, Samuel A.
Venue
ACS Nano
Published
2013-09-26
Volume
7
Issue
10
Pages
8605-8615
ISSN
  • 1936-0851 (ISSN-L)
  • 1936-086X
OpenAlex
W2095435627
Cited by
95
References
72
Citations by year
2026: 4 · 2025: 7 · 2024: 4 · 2023: 5 · 2022: 11 · 2021: 6 · 2020: 11 · 2019: 12 · 2018: 6 · 2017: 4 · 2016: 9 · 2015: 9 · 2014: 7
FWCI
3.73
Type
journal article
Language
en
Open access
Locations
  • ACS Nano (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (5u01ca141541-02)
  • National Heart, Lung, and Blood Institute (R01HL073646)
  • National Cancer Institute (R01CA063417, U01-CA141541)
  • National Institute of General Medical Sciences (T32GM007200)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R21DK095555, DK095555)
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases (R01AR056223, AR056223)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Interference and Gene Delivery
  • Physical Sciences › Materials Science › Biomaterials › Nanoparticle-Based Drug Delivery
  • Physical Sciences › Materials Science › Polymers and Plastics › Dendrimers and Hyperbranched Polymers
Keywords
siRNA transfection, endosomal escape, macropinocytosis, endosomal acidification, NF-κB signaling, adult T-cell leukemia/lymphoma, nanoparticle-mediated gene delivery
MeSH terms
Amino Acid Sequence, Animals, Melitten, Molecular Sequence Data, Peptides, Endosomes, Transfection, Signal Transduction, NF-kappa B, Microscopy, Atomic Force, RNA, Small Interfering, Cell Line, Tumor, Mice, Nanoparticles

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