期刊
CHEMBIOCHEM
卷 21, 期 22, 页码 3244-3248出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cbic.202000227
关键词
cyanovinylcarbazole; DNAzymes; enzyme resistance; photo-chemical switching; reversible photo-crosslinking
资金
- JSPS KAKENHI [17H03085, 19H04204]
- Asahi glass foundation
- Grants-in-Aid for Scientific Research [19H04204] Funding Source: KAKEN
The regulation of DNAzyme activity is an important problem for itsin vivoapplications. We achieved photochemical regulation of DNAzyme activity by using reversible DNA photo-crosslinking of 3-cyanovinylcarbazole (K-CNV). The ODN containing(CNV)K photo-crosslinked to a pyrimidine base in the complementary strand after a few seconds of photoirradiation, and its photoadduct was split by photoirradiation of another wavelength. The activity of photo-crosslinked DNAzyme with(CNV)K was completely inhibited (OFF state). In contrast, after 312 nm irradiation, DNAzyme activity was recovered upon addition of a substrate strand (ON state). In addition, the photo-crosslinked DNAzyme is prone to enzymatic digestion by exonuclease. This photochemical OFF to ON switching with reversible DNA photo-crosslinking was regulated at the desired time and position; therefore, it might be possible to use it forin vivoapplication.
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