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Quantitative analysis of condensation/decondensation status of pDNA in the nuclear sub-domains by QD-FRET
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 nucle...
Autores principales: | , , , , , , , |
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Formato: | Texto |
Lenguaje: | English |
Publicado: |
Oxford University Press
2011
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3074156/ https://www.ncbi.nlm.nih.gov/pubmed/21288880 http://dx.doi.org/10.1093/nar/gkq1327 |
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author | Shaheen, Sharif M. Akita, Hidetaka Yamashita, Atsushi Katoono, Ryo Yui, Nobuhiko Biju, Vasudevanpillai Ishikawa, Mitsuru Harashima, Hideyoshi |
author_facet | Shaheen, Sharif M. Akita, Hidetaka Yamashita, Atsushi Katoono, Ryo Yui, Nobuhiko Biju, Vasudevanpillai Ishikawa, Mitsuru Harashima, Hideyoshi |
author_sort | Shaheen, Sharif M. |
collection | PubMed |
description | 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. |
format | Text |
id | pubmed-3074156 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | Oxford University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-30741562011-04-12 Quantitative analysis of condensation/decondensation status of pDNA in the nuclear sub-domains by QD-FRET Shaheen, Sharif M. Akita, Hidetaka Yamashita, Atsushi Katoono, Ryo Yui, Nobuhiko Biju, Vasudevanpillai Ishikawa, Mitsuru Harashima, Hideyoshi Nucleic Acids Res Methods Online 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. Oxford University Press 2011-04 2011-02-01 /pmc/articles/PMC3074156/ /pubmed/21288880 http://dx.doi.org/10.1093/nar/gkq1327 Text en © The Author(s) 2011. Published by Oxford University Press. http://creativecommons.org/licenses/by-nc/2.5 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.5), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Methods Online Shaheen, Sharif M. Akita, Hidetaka Yamashita, Atsushi Katoono, Ryo Yui, Nobuhiko Biju, Vasudevanpillai Ishikawa, Mitsuru Harashima, Hideyoshi Quantitative analysis of condensation/decondensation status of pDNA in the nuclear sub-domains by QD-FRET |
title | Quantitative analysis of condensation/decondensation status of pDNA in the nuclear sub-domains by QD-FRET |
title_full | Quantitative analysis of condensation/decondensation status of pDNA in the nuclear sub-domains by QD-FRET |
title_fullStr | Quantitative analysis of condensation/decondensation status of pDNA in the nuclear sub-domains by QD-FRET |
title_full_unstemmed | Quantitative analysis of condensation/decondensation status of pDNA in the nuclear sub-domains by QD-FRET |
title_short | Quantitative analysis of condensation/decondensation status of pDNA in the nuclear sub-domains by QD-FRET |
title_sort | quantitative analysis of condensation/decondensation status of pdna in the nuclear sub-domains by qd-fret |
topic | Methods Online |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3074156/ https://www.ncbi.nlm.nih.gov/pubmed/21288880 http://dx.doi.org/10.1093/nar/gkq1327 |
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