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Hairpin DNA-Functionalized Gold Colloids for the Imaging of mRNA in Live Cells
Open accessAbstract
A strategy is presented for the live cell imaging of messenger RNA using hairpin DNA-functionalized gold nanoparticles (hAuNP). hAuNP improve upon technologies for studying RNA trafficking by their efficient internalization within live cells without transfection reagents, improved resistance to DNase degradation, low cytotoxicity, and the incorporation of hairpin DNA molecular beacons to confer high specificity and sensitivity to the target mRNA sequence. Furthermore, the targeted nanoparticle-beacon construct, once bound to the target mRNA sequence, remains hybridized to the target, enabling spatial and temporal studies of RNA trafficking and downstream analysis. Targeted hAuNP exhibited high specificity for glyceraldehyde 3-phosphate dehydrogenase (GADPH) mRNA in live normal HEp-2 cells and respiratory syncytial virus (RSV) mRNA in live RSV-infected HEp-2 cells with high target to background ratios. Multiplexed fluorescence imaging of distinct mRNAs in live cells and simultaneous imaging of mRNAs with immunofluorescently stained protein targets in fixed cells was enabled by appropriate selection of molecular beacon fluorophores. Pharmacologic analysis suggested that hAuNP were internalized within cells via membrane-nanoparticle interactions. hAuNP are a promising approach for the real-time analysis of mRNA transport and processing in live cells for elucidation of biological processes and disease pathogenesis.
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Saiki, R. K., Scharf, S., Faloona, F., Mullis, K. B., Horn, G. T., Erlich, H. A., & Arnheim, N. (1985) · Science · doi:10.1126/science.2999980 · Cited by 8,956
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Rational Engineering of a Dynamic, Entropy‐Driven DNA Nanomachine for Intracellular MicroRNA Imaging
Liang, C., Ma, P., Liu, H., Guo, X., Yin, B., & Ye, B. (2017) · Angewandte Chemie International Edition · doi:10.1002/anie.201704147 · Cited by 389
Fluorescent nanoparticles for intracellular sensing: A review
Ruedas-Rama, M. J., Walters, J. D., Orte, A., & Hall, E. A. H. (2012) · Analytica Chimica Acta · doi:10.1016/j.aca.2012.09.025 · Cited by 321
Metadata
- Authors
- Jayagopal, A., Halfpenny, K. C., Perez, J. W., & Wright, D. W.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-06-29
- Volume
- 132
- Issue
- 28
- Pages
- 9789-9796
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W1987193293
- Cited by
- 172
- References
- 1
- FWCI
- 6.38
- Type
- journal article
- Language
- en
- Open access
- green
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