Ten different chemically modified nucleosides were incorporated into short DNA strands (chimeric oligonucleotides ON3-ON12 and ON15-ON24) and then tested for their capacity to mediate RNAse H cleavage of the complementary RNA strand. The modifications were placed at two central positions directly in the RNase H cleaving region. The RNA strand of duplexes with ON3, ON5 and ON12 were cleaved more efficiently than the RNA strand of the DNA:RNA control duplex. There seems to be no correlation between the thermal stability between the duplexes and RNase H cleavage.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.bmcl.2008.03.004 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
circICMT upregulates and suppresses the malignant behavior of bladder cancer.
Transl Oncol
December 2024
Central Laboratory, The Affiliated Panyu Central Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511400, PR China. Electronic address:
Background: Circular RNA (circRNA) is a new type of endogenous single-stranded RNA with a covalently closed circular structure. Increasing evidence shows that circRNA plays an important role in regulating gene expression in tumors. circICMT is a circular RNA produced by the ICMT gene.
View Article and Find Full Text PDFComplete mitochondrial genome sequencing and phylogenetic analysis of Phellinus igniarius.
Sci Rep
December 2024
College of Life sciences, Shandong First Medical University and Shandong Academy of Medical Sciences, Tai'an, 271016, China.
The mitochondrial whole genome of Phellinus igniarius was sequenced with the objective of examining the evolutionary relationships amongst related species. The entire mitochondrial genome was assembled using Illumina sequencing technology. The structural annotation and bioinformatics analysis were performed.
View Article and Find Full Text PDFThe role of microRNA in the regulation of hepatic metabolism and energy-expensive processes in the hibernating dormouse.
Cryobiology
December 2024
Institute of Biochemistry and Department of Biology, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Canada.
The garden dormouse (Eliomys quercinus) is a fat-storing mammal that undergoes annual periods of hibernation to mitigate the effects of food scarcity, low ambient temperatures, and reduced photoperiod that characterize winter. Like other hibernating species, this animal suppresses its metabolic rate by downregulating nonessential genes and processes in order to prolong available energy stores and limit waste accumulation throughout the season. MicroRNAs (miRNAs) are short, single-stranded, noncoding RNAs that bind to mRNA and mediate post-transcriptional suppression, making miRNA ideal for modulating widespread changes in gene expression, including global downregulation typified by metabolic rate depression.
View Article and Find Full Text PDFBiomimetic fluorescence-enhanced platform based on photonic crystals and DNAzyme walker for visualization and quantification of miRNA-21.
Talanta
December 2024
Institute of Biomedical Precision Testing and Instrumentation, College of Artificial Intelligence, Taiyuan University of Technology, Taiyuan, Shanxi, 030600, PR China.
Developing a fluorescence sensing platform for point-of-care detection of low abundance biomarkers is highly valuable for early diagnosis of disease. Herein, a biomimetic fluorescence-enhanced platform based on photonic crystals and DNAzyme walker was constructed and further applied to visualize and quantify the miRNA-21 in biological samples. The DNAzyme walker was orthogonally activated by the target miRNA-21, which enabled the unlocking of the DNAzyme walker strand and the subsequently repeated substrate cleavage, thus generating enhanced fluorescence signals.
View Article and Find Full Text PDFAnti-miR21-conjugated DNA nanohydrogel for enhanced cancer therapy.
Biomater Adv
December 2024
Department of Chemistry and the Natural Science Research Institute, Myongji University, 116 Myongji-ro, Yongin-si 17058, Republic of Korea. Electronic address:
MicroRNAs (miRNAs) are non-coding, endogenous small single-stranded RNA molecules involved in post-transcriptional regulation of gene expression. It has been demonstrated that dysregulation of miRNA plays a major role in tumor formation, proliferation, and metastasis. Therefore, the delivery of anti-miRNA oligonucleotides to block the activity of these oncogenic miRNAs is a high-potential anti-cancer therapy approach.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!