Antisense Oligonucleotides
Mostrando 1-12 de 454 artigos, teses e dissertações.
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1. Gene Silencing Therapeutics in Cardiology: A Review Article
Abstract Therapeutics that inhibit enzymes, receptors, ion channels, and cotransporters have long been the mainstay of cardiovascular medicine. Now, oligonucleotide therapeutics offer a modern variation on this paradigm of protein inhibition. Rather than target a protein, however, small interfering ribonucleic acids and antisense oligonucleotides target the
International Journal of Cardiovascular Sciences. Publicado em: 2022
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2. ARHGAP21 inibe a secreção de insulina estimulada por glicose através da modulação aa FAK, CDC42 E PKC dzeta / ARHGAP21 inhibits glucose-stimulated insulin secretion through through FAK, CDC42 and PKC dzeta
Background/Aims: ARHGAP21 is a Rho-GAP that promotes activation of the Rho-GTPase Cdc42 intrinsic factor, which is responsible for the hydrolysis of GTP to GDP and those proteins inactivation. ARHGAP21 associates with PKC? in cardiomyocytes and to the C-terminal portion of FAK in glioblastoma, inhibiting Rho-GTPases and actin cytoskeleton rearrangement. Cdc4
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/06/2011
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3. Preparação e caracterização de nanoemulsões contendo oligonucleotídeos antisense através da técnica de emulsificação espontânea / Preparation and characterization of nanoemulsions containing antisense oligonucleotides by spontaneous emulsifications procedure
Recentemente, nanoemulsões preparadas pela técnica de microfluidização foram propostas como um sistema de liberação de oligonucleotídeos antisense (ON) por Teixeira et al. [J. contr. rel., 70:243-255, 2001]. O objetivo do presente trabalho foi preparar e caracterizar nanoemulsões através de uma técnica alternativa, a emulsificação espontânea, vi
Publicado em: 2010
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4. Reversão do fenótipo de resistência a múltiplas drogas em células de sarcoma uterino humano. Utilização de emulsão lipídica como veículo de oligonucleotídeos antissenso / Reversion of the multiple drug resistance phenotype in a human sarcoma cell line. Lipid emulsion as antisense oligonucleotide vector
The objective of this study was to evaluate the usefulness of a nanolipid emulsion (LDE) as a vector to carry antisense oligonucleotides (OAS). LDE is a nanoemulsion consisting of 48% cholesterol esters, 47,8% phospholipid, 2,3% triglycerides and 1,9% unesterified cholesterol. It is able to obtain apoE from HDL and interact with B/E receptor. The metabolic b
Publicado em: 2007
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5. Design and applications of modified oligonucleotides
Oligonucleotides have a wide range of applications in fields such as biotechnology, molecular biology, diagnosis and therapy. However, the spectrum of uses can be broadened by introducing chemical modifications into their structures. The most prolific field in the search for new oligonucleotide analogs is the antisense strategy, where chemical modifications
Brazilian Journal of Medical and Biological Research. Publicado em: 2003-02
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6. Specificity of antisense oligonucleotides in vivo.
Antisense oligonucleotides are widely used as inhibitors of gene expression in cultured cells and have been proposed as potential therapeutic agents, but it is not known to what extent they are specific for their intended target RNAs. Statistical considerations indicate that if oligonucleotides can form hybrids with mRNA molecules in vivo by means of short o
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7. Oligonucleotides antisense to the interleukin 1 receptor mRNA block the effects of interleukin 1 in cultured murine and human fibroblasts and in mice.
Phosphodiester and phosphorothioate oligodeoxynucleotides (18 mers) were constructed antisense to sequences of the recently cloned murine and human IL-1 receptors. Murine antisense oligonucleotides inhibited IL-1-stimulated PGE2 synthesis by murine fibroblasts in culture in a time (days) and concentration-dependent (3 microM-30 microM) fashion. Murine sense
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8. Antisense inhibition of gene expression in cells by oligonucleotides incorporating locked nucleic acids: effect of mRNA target sequence and chimera design
Use of antisense oligonucleotides is a versatile strategy for achieving control of gene expression. Unfortunately, the interpretation of antisense-induced phenotypes is sometimes difficult, and chemical modifications that improve the potency and specificity of antisense action would be useful. The introduction of locked nucleic acid (LNA) bases into oligonuc
Oxford University Press.
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9. Myosin IIA Drives Neurite Retraction
Neuritic extension is the resultant of two vectorial processes: outgrowth and retraction. Whereas myosin IIB is required for neurite outgrowth, retraction is driven by a motor whose identity has remained unknown until now. Preformed neurites in mouse Neuro-2A neuroblastoma cells undergo immediate retraction when exposed to isoform-specific antisense oligonuc
The American Society for Cell Biology.
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10. Potent and nontoxic antisense oligonucleotides containing locked nucleic acids
Insufficient efficacy and/or specificity of antisense oligonucleotides limit their in vivo usefulness. We demonstrate here that a high-affinity DNA analog, locked nucleic acid (LNA), confers several desired properties to antisense agents. Unlike DNA, LNA/DNA copolymers were not degraded readily in blood serum and cell extracts. However, like DNA, the LNA/DNA
National Academy of Sciences.
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11. Morpholino antisense oligonucleotides: tools for investigating vertebrate development
Antisense oligonucleotides provide a promising approach to investigating gene function in vivo, but their ability to offer unambiguous insights into phenotypes has been debated. The recent use of morpholino antisense oligonucleotides in zebrafish embryos may prove a major advance, but rigorous controls are essential.
BioMed Central.
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12. Potent antisense oligonucleotides to the human multidrug resistance-1 mRNA are rationally selected by mapping RNA-accessible sites with oligonucleotide libraries.
Antisense oligonucleotides can vary significantly and unpredictably in their ability to inhibit protein synthesis. Libraries of chimeric oligonucleotides and RNase H were used to cleave and thereby locate sites on human multidrug resistance-1 RNA transcripts that are relatively accessible to oligonucleotide hybridization. In cell culture, antisense sequences