Selective decomposition of nucleic acids by laser irradiation on probe-tethered gold nanoparticles in solution

Literature Information

Publication Date 2010-11-01
DOI 10.1039/C0CP00770F
Impact Factor 3.676
Authors

Yoshihiro Takeda, Tamotsu Kondow, Fumitaka Mafuné


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Abstract

We have developed a new method for selective decomposition of nucleic acids. The method utilizes a high temperature and pressure region (HTP region, hereafter) around a gold nanoparticle, which was generated when the gold nanoparticle was irradiated with a pulsed laser in aqueous solution. A probe DNA molecule whose sequence was complementary to a part of a target DNA molecule was bound to the gold nanoparticle surface. In a solution containing both the target and non-target DNA molecules, the gold nanoparticle selectively attached to the target DNA through hybridization of the probe DNA. When the gold nanoparticle was excited by a pulsed laser, the HTP region was generated in the close vicinity of the gold nanoparticle and then the target DNA molecules inside of this region were decomposed. The non-target DNA molecules having no part complementary to the probe DNA were scarcely decomposed by laser irradiation. When the gold nanoparticle was excited by an intense laser, the non-target DNA molecules were also decomposed, because some of them were located inside the inflated HTP region. We discussed the mechanism of the decomposition of the DNA molecules by the HTP region.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
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Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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