A simple and facile approach was developed for monitoring EcoRI endonuclease activity and inhibition, in which a hairpin-like DNA containing restriction cutting site for EcoRI endonuclease acts as the sensing element and Hoechst dyes as the signal indicator in a label-free format.
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http://dx.doi.org/10.1039/c4an01373e | DOI Listing |
J Fluoresc
January 2025
School of Chemical and Environmental Engineering, Yancheng Teachers University, Yancheng City, Jiangsu Province, 224007, People's Republic of China.
Sudan dyes are recognized as carcinogens, which are strictly determined whether there are them in food for food safety. Hence, in order to understand the mechanism at the molecular level, this work investigated the binding interactions of Sudan I-IV with calfthy mus DNA. The synchronous fluorescence and UV-vis spectral results suggested the complex formation between Sudan I-IV and ct-DNA.
View Article and Find Full Text PDFMol Biol (Mosk)
December 2024
Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991 Russia.
Using a computer modeling approach, we proposed a structure for a potential GC-specific DNA ligand, which could form a complex with DNA in the minor groove similar to that formed by Hoechst 33258 at DNA AT-enriched sites. According to this model, , a bisbenzoxazole ligand, was synthesized. The results of spectrophotometric methods supported the complex formation of the compound under study with DNA differing in the nucleotide composition.
View Article and Find Full Text PDFTalanta
April 2025
Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, Shandong Key Laboratory of Biochemical Analysis, Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong, Key Laboratory of Eco-chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, PR China. Electronic address:
Genetic testing plays a crucial role in guiding individualized medication, however, detecting fine structural mutations in genes continues to present significant challenges. This study introduces a dual-signal fluorescence system, termed FeO@Au@PEG@P1+MOF@P, that integrates magnetic separation of FeO@Au with NH-MIL-88 (MOF) catalysis. Initially, the specimen (T1/T2) facilitated the formation of a specific complex (FeO@Au@PEG@P1+T1/T2) with FeO@Au@PEG@P1.
View Article and Find Full Text PDFToxicol Lett
December 2024
School of Life Science and Technology, Wuhan Polytechnic University, Wuhan 430023, China. Electronic address:
Nano-titanium dioxide (Nano-TiO) is extensively utilized across various industries and has the capacity to penetrate human tissues through multiple biological barriers. The HaCaT cell line, as one of human immortalized keratinocytes, is usually used as a model for studying skin drug toxicology. The objective was to assess the toxic effects of nano-TiO on HaCaT cells and to trigger pyroptosis.
View Article and Find Full Text PDFJ Labelled Comp Radiopharm
November 2024
Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada.
Herein, the successful syntheses of D- and C-N-methyl and D-tert-butyl Hoechst dyes are presented. This includes the preparation of the labelled D- and C-N-methyl piperazines and D-tert-butylated hydroxytoluene precursors. The tert-butyl Hoechst dye is known to bind a specific RNA aptamer.
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