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Cited by 407

The DOI matches its Crossref record; 7 of the 7 references it cites were found in a registry or an index.

Proton-Sponge Coated Quantum Dots for siRNA Delivery and Intracellular Imaging

Open access
Yezhelyev, Maksym V., Qi, Lifeng, O’Regan, Ruth M., Nie, Shuming, Gao, Xiaohu·2008·Journal of the American Chemical Society

Abstract

We report the rational design of multifunctional nanoparticles for short-interfering RNA (siRNA) delivery and imaging based on the use of semiconductor quantum dots (QDs) and proton-absorbing polymeric coatings (proton sponges). With a balanced composition of tertiary amine and carboxylic acid groups, these nanoparticles are specifically designed to address longstanding barriers in siRNA delivery such as cellular penetration, endosomal release, carrier unpacking, and intracellular transport. The results demonstrate dramatic improvement in gene silencing efficiency by 10-20-fold and simultaneous reduction in cellular toxicity by 5-6-fold, when compared directly with existing transfection agents for MDA-MB-231 cells. The QD-siRNA nanoparticles are also dual-modality optical and electron-microscopy probes, allowing real-time tracking and ultrastructural localization of QDs during delivery and transfection. These new insights and capabilities represent a major step toward nanoparticle engineering for imaging and therapeutic applications.

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Metadata

Authors
Yezhelyev, M. V., Qi, L., O’Regan, R. M., Nie, S., & Gao, X.
Venue
Journal of the American Chemical Society
Published
2008-06-21
Volume
130
Issue
28
Pages
9006-9012
ISSN
  • 0002-7863 (ISSN-L)
  • 1520-5126
OpenAlex
W2043167746
Cited by
407
References
7
FWCI
13.90
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Proton-Sponge Coated Quantum Dots for siRNA Delivery and Intracellular Imaging. https://app.cochat.ai/papers/10.1021/ja800086u
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Yezhelyev, M. V., Qi, L., O’Regan, R. M., Nie, S., & Gao, X. (2008). Proton-Sponge Coated Quantum Dots for siRNA Delivery and Intracellular Imaging. Journal of the American Chemical Society. https://doi.org/10.1021/ja800086u

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