ArticleNucleic acids research2011
Quantitative analysis of condensation/decondensation status of pDNA in the nuclear sub-domains by QD-FRET.
Article in Nucleic acids research, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
What it found
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Who cites it
6 citing papers in PubMed.
- Raster image cross-correlation analysis for spatiotemporal visualization of intracellular degradation activities against exogenous DNAs.Scientific reports · 2015Article
- Insight into mechanisms of cellular uptake of lipid nanoparticles and intracellular release of small RNAs.Pharmaceutical research · 2014Article
- Article
- Recent advances in nanoparticle-based Förster resonance energy transfer for biosensing, molecular imaging and drug release profiling.International journal of molecular sciences · 2012Review
- Understanding nonviral nucleic acid delivery with quantum dot-FRET nanosensors.Nanomedicine (London, England) · 2012Review
- Sensitive and rapid quantification of C-reactive protein using quantum dot-labeled microplate immunoassay.Journal of translational medicine · 2012Article
Corrections and comments
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Recent studies indicate that controlling the nuclear decondensation and intra-nuclear localization of plasmid DNA (pDNA) would result in an increased transfection efficiency. In the present study, we established a technology for imaging the nuclear condensation/decondensation status of pDNA in nuclear subdomains using fluorescence resonance energy transfer (FRET) between quantum dot (QD)-labeled pDNA as donor, and rhodamine-labeled polycations as acceptor. The FRET-occurring pDNA/polycation particle was encapsulated in a nuclear delivery system; a tetra-lamellar multifunctional envelope-type nano device (T-MEND), designed to overcome the endosomal membrane and nuclear membrane via step-wise fusion. Nuclear subdomains (i.e. heterochromatin and euchromatin) were distinguished by Hoechst33342 staining. Thereafter, Z-series of confocal images were captured by confocal laser scanning microscopy. pDNA in condensation/decondensation status in heterochromatin or euchromatin were quantified based on the pixel area of the signals derived from the QD and rhodamine. The results obtained indicate that modulation of the supra-molecular structure of polyrotaxane (DMAE-ss-PRX), a condenser that is cleaved in a reductive environment, conferred euchromatin-preferred decondensation. This represents the first demonstration of the successful control of condensation/decondensation in specific nuclear sub-domain via the use of an artificial DNA condenser.
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Registered trials
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