Search for dissertations about: "antisense agents"
Showing result 1 - 5 of 15 swedish dissertations containing the words antisense agents.
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1. Conformationally Constrained Nucleosides : Design, Synthesis, and Biochemical Evaluation of Modified Antisense Oligonucleotides
Abstract : This thesis is concerned with synthesis, structure and biochemical analysis of chemically modified oligonucleotides with potential therapeutic applications. The three types of chemical modifications described here are: (a) A North-East locked 1',2'-azetidine nucleoside (b) A North locked 2',4'-cyanomethylene bridged nucleoside and (c) A 2',4'-aza-ENA-T nucleoside. READ MORE
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2. Bacterial gene expression inhibition with antisense peptide nucleic acids
Abstract : Regulated gene expression is widely useful for gene function studies and as a means to control genes important in disease. There are many methods for regulating the expression of genes, and one approach is to use antisense oligonucleotides that bind complementary mRNAs to inhibit translation. READ MORE
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3. Radiolabelled Oligonucleotides for Evaluation of in vivo Hybridisation Utilising PET Methodology
Abstract : Antisense oligonucleotides (ODN) may interfere in gene expression on the basis of hybridising to its complementary messenger RNA (mRNA) sequence in the cell thereby preventing the synthesis of the peptide. Therefore, these ODNs may be potential drugs to treat human diseases by “knocking down” the expression of responsible genes or correcting the maturation process of mRNA in the field called antisense therapy. READ MORE
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4. Delivery of gene-regulating agents : internalization mechanisms and novel vectors
Abstract : The sequencing of the human genome was expected to generate a veritable explosion of therapeutics for regulation of gene function, either through modulation of gene expression or through the replacement of defect genes. However, nucleic acid-based pharmacological agents suffer from issues of low bioavailability and unfavorable pharmacokinetics, wherefore these prospects have not yet been realized. READ MORE
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5. Chemically Modified Oligonucleotides: Synthesis, Physicochemical and Biochemical Properties of their Duplexes with DNA and RNA
Abstract : This thesis is based on 9 papers dealing with the synthesis, physicochemical and biochemical properties of two types of chemically modified oligonucleotides which have the potential to down-regulate gene expression: (i) The first set is comprised of antisense oligonucleotides (AONs) conjugated with different chromophores of varying size, charge and π-electron density. Conjugation of the chromophores at the 3'- or 5'-end enhanced the target RNA binding affinity and RNase H recruitment capabilities compared to the native counterpart without changing the global helical conformation of their AON/RNA hybrid duplexes. READ MORE