Nanoscale, volume 7, issue 26, pages 11352-11362

Highly luminescent and cytocompatible cationic Ag2S NIR-emitting quantum dots for optical imaging and gene transfection.

Fatma Demir Duman 1
Ibrahim Hocaoglu 1
Deniz Gülfem Öztürk 2
Deniz Gulfem Ozturk 2
Devrim Gozuacik 2
Alper Kiraz 1, 3
H. Yagci Acar 1, 4, 5
Publication typeJournal Article
Publication date2015-05-25
Journal: Nanoscale
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor6.7
ISSN20403364, 20403372
General Materials Science
Abstract
The development of non-toxic theranostic nanoparticles capable of delivering a therapeutic cargo and providing a means for diagnosis is one of the most challenging tasks in nano-biotechnology. Gene therapy is a very important mode of therapy and polyethyleneimine (PEI) is one of the most successful vehicles for gene transfection, yet poses significant toxicity. Optical imaging utilizing quantum dots is one of the newer but fast growing diagnostic modalities, which requires non-toxic, highly luminescent materials, preferentially active in the near infrared region. Ag2S NIRQDs fit to this profile perfectly. Here, we demonstrate the aqueous synthesis of cationic Ag2S NIRQDs with a mixed coating of 2-mercaptopropionic acid (2MPA) and PEI (branched, 25 kDa), which are highly luminescent in the NIR-I window (λem = 810-840 nm) as new theranostic nanoparticles. Synergistic stabilization of the QD surface via the simultaneous use of a small molecule and a polymeric material provided the highest quantum yield, 150% (with respect to LDS 798 at pH 7.4), reported in the literature for Ag2S. These cationic particles show a dramatic improvement in cytocompatibility even without PEGylation, a strong optical signal easily detected by confocal laser microscopy and effective conjugation and transfection of the green fluorescence protein plasmid (pGFP) to HeLa and MCF-7 cell lines (40% efficiency). Overall, these Ag2S NIRQDs show great potential as new theranostics.

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Demir Duman F. et al. Highly luminescent and cytocompatible cationic Ag2S NIR-emitting quantum dots for optical imaging and gene transfection. // Nanoscale. 2015. Vol. 7. No. 26. pp. 11352-11362.
GOST all authors (up to 50) Copy
Demir Duman F., Hocaoglu I., Öztürk D. G., Ozturk D. G., Gozuacik D., Kiraz A., Acar H. Y. Highly luminescent and cytocompatible cationic Ag2S NIR-emitting quantum dots for optical imaging and gene transfection. // Nanoscale. 2015. Vol. 7. No. 26. pp. 11352-11362.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.1039/C5NR00189G
UR - https://doi.org/10.1039/C5NR00189G
TI - Highly luminescent and cytocompatible cationic Ag2S NIR-emitting quantum dots for optical imaging and gene transfection.
T2 - Nanoscale
AU - Öztürk, Deniz Gülfem
AU - Demir Duman, Fatma
AU - Hocaoglu, Ibrahim
AU - Gozuacik, Devrim
AU - Kiraz, Alper
AU - Acar, H. Yagci
AU - Ozturk, Deniz Gulfem
PY - 2015
DA - 2015/05/25 00:00:00
PB - Royal Society of Chemistry (RSC)
SP - 11352-11362
IS - 26
VL - 7
SN - 2040-3364
SN - 2040-3372
ER -
BibTex |
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BibTex Copy
@article{2015_Demir Duman,
author = {Deniz Gülfem Öztürk and Fatma Demir Duman and Ibrahim Hocaoglu and Devrim Gozuacik and Alper Kiraz and H. Yagci Acar and Deniz Gulfem Ozturk},
title = {Highly luminescent and cytocompatible cationic Ag2S NIR-emitting quantum dots for optical imaging and gene transfection.},
journal = {Nanoscale},
year = {2015},
volume = {7},
publisher = {Royal Society of Chemistry (RSC)},
month = {may},
url = {https://doi.org/10.1039/C5NR00189G},
number = {26},
pages = {11352--11362},
doi = {10.1039/C5NR00189G}
}
MLA
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Demir Duman, Fatma, et al. “Highly luminescent and cytocompatible cationic Ag2S NIR-emitting quantum dots for optical imaging and gene transfection..” Nanoscale, vol. 7, no. 26, May. 2015, pp. 11352-11362. https://doi.org/10.1039/C5NR00189G.
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