A silencing vector for cotton (Gossypium hirsutum) was developed from the geminivirus Cotton leaf crumple virus (CLCrV). The CLCrV coat protein gene was replaced by up to 500 bp of DNA homologous to one of two endogenous genes, the magnesium chelatase subunit I gene (ChlI) or the phytoene desaturase gene (PDS). Cotyledons of cotton cultivar 'Deltapine 5415' bombarded with the modified viral vec...

Gene silencing in plants using topical dsRNA is a new approach that has the potential to be sustainable component of agricultural production systems future. However, more research needed enable this technology as an economical and efficacious supplement current crop protection practices. Systemic gene one key enabling aspect. The objective was better understand topically-induced, systemic trans...

Background: Dendritic cells (DCs) are ideal accessory cells in the field of gene therapy. Delivery of DNA and siRNA into mammalian cells is a useful technique in treating various diseases caused by single gene defects. Selective gene silencing by small interfering RNAs (siRNAs) and antisense oligodeoxynucleotides (ODN)s is an efficient method for the manipulation of cellular functions. An effic...

The discovery of the mechanism of RNA interference by ds RNA by Prof. Andrew Fire and Prof. Craig Mello in 1998, gave them the Nobel Prize in 2006. This discovery revealed a new mechanism for gene regulation through "gene silencing" at the transcriptional level (TGS) or at the post-transcriptional level (PTGS), which play a key role in many essential cellular processes. Today dsRNA is used as a...

Cardiac arrhythmias are a major healthcare problem in the developed world. The American Heart Association 2017 statistical report indicates that atrial fibrillation, the most common cardiac rhythm disorder, has an ≈25% lifetime incidence and annual costs of ≈26 billion dollars, whereas sudden cardiac death (usually caused by malignant arrhythmias) affects fewer individuals (just under 200 000 A...

Virus-induced gene silencing (VIGS) is a powerful reverse genetics tool wherein the expression of a targeted gene is reduced by a viral vector in a sequence homology-dependent manner. A VIGS system using a modified Barley stripe mosaic virus (BSMV) has been developed and successfully employed in the functional characterization of genes in monocots. There are several inherent limitations to the ...

BACKGROUND Hairpin RNA (hpRNA) transgenes can be effective at inducing RNA silencing and have been exploited as a powerful tool for gene function analysis in many organisms. However, in fungi, expression of hairpin RNA transcripts can induce post-transcriptional gene silencing, but in some species can also lead to transcriptional gene silencing, suggesting a more complex interplay of the two pa...

The past decade has seen intense scientific interest in non-coding RNAs. In particular, the discovery and subsequent exploitation of gene silencing via RNA interference (RNAi) has revolutionized the way in which gene expression is now studied and understood. It is now well established that post-transcriptional gene silencing (PTGS) by the microRNA (miRNA) and other RNAi-associated pathways repr...