By Ian Gibson
Antisense and ribozymes have a comparatively brief but winning background as examine instruments in gene expression experiences, and therefore are regarded as having excessive capability reagents in treating viral infections and cancer.
This laboratory significant other offers specified details at the capability, merits and boundaries of this technique. It significantly discusses capability pitfalls, offers suggestions for selecting goals and supply platforms, with a view to let the choice of the optimal technique for attaining speedy and trustworthy experimental luck with any human or different organic system.
For researchers, technicians and complicated graduates in experimental medication, molecular and phone biology.
Chapter 1 Antisense and Ribozyme technique (pages 1–12):
Chapter 2 layout and Synthesis of Antisense DNA Molecules (pages 13–26):
Chapter three The layout and Synthesis of Hammerhead Ribozymes (pages 27–40):
Chapter four supply of Ribozymes and Antisense DNA Molecules into Mammalian Cells (pages 41–71):
Chapter five the longer term (pages 73–76):
Read or Download Antisense and Ribozyme Methodology: Laboratory Companion PDF
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Extra info for Antisense and Ribozyme Methodology: Laboratory Companion
4 Other Methods Used in Nucleic Acid Transf ect ion Nucleic acids of almost all sizes can be used for transfection into living cells according to established protocols. , 1993). In the case of exogenous targets, such as many viral sequences, the target can be co-transfected together with a ribozyme. These results indicate that transfected ribozymes may be present intracellularly in an active form over a period of time that is long enough for mediating significant inhibitory effects. Further, this experiment shows that transfected RNA enters the cytoplasm, which is the location of a number of potential target RNA sequences.
1993)originally concluded that oligonucleotides could be introduced into cells by permeabilization with streptolysin 0, on the basis of antisense effects observed in a transformed mouse kidney cell line. A two-parameter flow cytometric technique for optimizing permeabilization was established which has proved invaluable, since not only d o different cell lines vary in their sensitivity to the treatment, but different batches of streptolysin 0 (Sigma) can exhibit profound variation in potency. 1 % bovine serum albumin] and activated with dithiothreitol (5 mM) for 2 h at room temperature.
This eluent composition should suffice for preparative separation, since the retention time reduces with the vastly greater amounts of oligodeoxynucleotide iniected. The HPLC UV detector is offset from the oligodeoxynucleotide absorption maximum to 290nm and the range set to 2 absorbance units full scale. The separation may be fine tuned by reducing the percentage of strong buffer still further during the preparative runs. Inadequately purified fractions may be rerun under the improved separation conditions after being rapidly concentrated and desalted.