作者: Etsuko KAWASHIMA , Kazuo KAMAIKE
关键词: Duplex (building) 、 Conjugated system 、 DNA 、 Biology 、 Stereochemistry 、 Gene expression 、 Linker 、 Guanine 、 Oligonucleotide 、 Solid-phase synthesis 、 Biochemistry
摘要: On the basis of reports that a minor groove binder pyrrolepolyamide can interfere with gene expression by sequence-specific recognition DNA, we expected nucleoside bearing would be able to regulate expression. Therefore, designed and synthesized pyrrolepolyamide-adenosine (Hybrid 1) -2′-deoxyguanosine hybrids 2 Hybrid 3) as lead compounds for control compounds. The frame 3 combines at 2-exocyclic amino group 2′-deoxyguanosine linker guanine exists in side duplex. is 2′-deoxyguanosine-pyrrolepolyamide hybrid using 3-aminopropionyl linker, while uses 3-aminopropyl linker. An evaluation DNA binding sequence selectivity was performed analysis Tm values CD spectra, distamycin A contrast. has provided more excellent sequence-distinguishable ability than other Distamycin A. Moreover, on these results, oligonucleotides conjugated 4, which stable under conditions oligonucleotide solid phase synthesis, arranged from 3. From spectral analysis, it found conjugating 4 possess high very includes sequence.