期刊
DYES AND PIGMENTS
卷 185, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2020.108882
关键词
Chiral supramolecule probe; Molecular recognition; DNA G-quadruplex; Self-assembly; Lighting-up probe
资金
- National Natural Science Foundation of China [22077123, 21472197, 21977099, U1432250]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDA09030307]
Chiral supramolecules exhibit superior recognition and catalytic abilities due to their chiral and self-assembly features. The constructed chiral H-aggregates in this study can specifically recognize DNA G-quadruplexes and enhance fluorescence intensity through binding of MeCy monomer.
Owing to their chiral and self-assembly features, chiral supramolecules exhibit superior recognition and catalytic abilities. Here, we construct a chiral H-aggregates based on a cyanine dye, 3,3'-di(3-sulfopropyl)-4,5,4'5'-dibenzo-9-methyl-thiacarbocyanine triethylammonium salt (MeCy), by spontaneous symmetry breaking in the presence of NaNO3. The chiral H-aggregates could specially recognize parallel DNA G-quadruplexes among other DNA types, probably by a three-step process, which comprises the amplified chiral induction, the disassembly of chiral H-aggregates and the binding of the MeCy monomer. The MeCy monomer binding to DNA parallel G-quadruplex led to a lighting-up fluorescence intensity obviously. Chiral supramolecules targeted to DNA G-quadruplex was proposed, and its transformation process was revealed, and thus potentially provided an excellent probe for DNA parallel G-quadruplexes.
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