Liposome-coated lipoplex–based carrier for antisense oligonucleotides

Liposome-coated lipoplex–based carrier for antisense oligonucleotides

The chemical nature of genetic drugs (e.g. antisense oligonucleotides, siRNA, vectors) requires a suitable carrier system to protect them from enzymatic degradation without changing their properties and enable efficient delivery into target cells. Lipid vectors for nucleic acid delivery that have been widely investigated for years can be very effective. As the majority of attempts made in the f...

Radiolabeled oligonucleotides for antisense imaging.

Oligonucleotides radiolabeled with isotopes emitting γ-rays (for SPECT imaging) or positrons (for PET imaging) can be useful for targeting messenger RNA (mRNA) thereby serving as non-invasive imaging tools for detection of gene expression in vivo (antisense imaging). Radiolabeled oligonucleotides may also be used for monitoring their in vivo fate, thereby helping us better understand the barrie...

Designing Antisense Oligonucleotides

Antisense Oligonucleotides Targeting Protein

Designing Antisense Oligonucleotides

Antisense oligonucleotides have been used for a number of years to modify the expression of specific genes both in vivo and in vitro (Scanlon et al., 1995). The most potent mode of antisense activity is through RNase H–mediated degradation of RNA (Figure 1). The RNase H– endonuclease specifically cleaves RNA only when it is hybridized as a heteroduplex with DNA. In general, oligonucleotides tha...