We previously showed that a trans-splicing ribozyme reprograms tumor-related genes at the mRNA level, resulting in the expression of therapeutic genes and that this approach can be efficiently employed to target specific molecules. Here, we show that trans-splicing ribozyme technology can be applied in molecular imaging of specific RNA expression in living animals. We exemplify this concept successfully by imaging mouse cytoskeleton-associated protein 2 (mCKAP2) expression in intrahepatic tumor nodules using systemically delivered adenovirus harboring mCKAP2-specific trans-splicing ribozyme.

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.febslet.2007.10.038DOI Listing

Publication Analysis

Top Keywords

trans-splicing ribozyme
16
molecular imaging
8
adenovirus harboring
8
imaging endogenous
4
endogenous mrna
4
expression
4
mrna expression
4
expression mouse
4
mouse tumor
4
tumor model
4

Similar Publications

RNA-sequencing has improved the diagnostic yield of individuals with rare diseases. Current analyses predominantly focus on identifying outliers in single genes that can be attributed to cis-acting variants within the gene locus. This approach overlooks causal variants with trans-acting effects on splicing transcriptome-wide, such as variants impacting spliceosome function.

View Article and Find Full Text PDF

Group I and II introns are large catalytic RNAs (ribozymes) that are frequently encountered in fungal mitochondrial genomes. The discovery of respiratory mutants linked to intron splicing defects demonstrated that for the efficient removal of organellar introns there appears to be a requirement of protein splicing factors. These splicing factors can be intron-encoded proteins with maturase activities that usually promote the splicing of the introns that encode them (-acting) and/or nuclear-encoded factors that can promote the splicing of a range of different introns (-acting).

View Article and Find Full Text PDF

RNA editing offers the opportunity to introduce either stable or transient modifications to nucleic acid sequence without permanent off-target effects, but installation of arbitrary edits into the transcriptome is currently infeasible. Here, we describe Programmable RNA Editing & Cleavage for Insertion, Substitution, and Erasure (PRECISE), a versatile RNA editing method for writing RNA of arbitrary length and sequence into existing pre-mRNAs via 5' or 3' trans-splicing. In trans-splicing, an exogenous template is introduced to compete with the endogenous pre-mRNA, allowing for replacement of upstream or downstream exon sequence.

View Article and Find Full Text PDF

Circular RNA (circRNA) has various advantages over linear mRNA that is gaining success as a new vaccine and therapeutic agent. Thus, circRNA and its engineering methods have attracted attention recently. In this study, we developed a new circRNA engineering method by end-to-end self-targeting and splicing (STS) reaction using group I intron ribozyme.

View Article and Find Full Text PDF

The search for safe and efficient new antifungal compounds for agriculture has led to more efforts in finding new modes of action. This involves the discovery of new molecular targets, including coding and non-coding RNA. Rarely found in plants and animals but present in fungi, group I introns are of interest as their complex tertiary structure may allow selective targeting using small molecules.

View Article and Find Full Text PDF

Want 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!