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| Registros recuperados: 10 | |
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| Bazzini,Ariel A; Mongelli,Vanesa C; Hopp,H. Esteban; del Vas,Mariana; Asurmendi,Sebastián. |
| Gene silencing, also called RNA interference (RNAi) is a specific mechanism of RNA degradation involved in gene regulation, development and defense in eukaryotic organisms. It became an important subject in the teaching programs of molecular biology, genetics and biotechnology courses in the last years. The aim of this work is to provide simple and inexpensive assays to understand and teach gene silencing using plants as model systems. The use of transient and permanent transgenic plants for expressing reporter genes, like those derived from jellyfish green fluorescent protein (gfp) encoding gene, provides a nice, colorful and conclusive image of gene silencing. Three experimental approaches to evidence RNA silencing are depicted. In the first approach... |
| Tipo: Journal article |
Palavras-chave: Gene silencing; GFP; HC-Pro; PDS; Protocols; PTGS; Teaching; Transgenic; Transient expression; TRV; VIGS. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582007000200002 |
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| Flachowsky,Henryk; Riedel,Marko; Reim,Stefanie; Hanke,Magda-Viola. |
| The generation of transgenic apple plants relies on the molecular analysis of transgene integration and expression based on polymerase chain reaction (PCR) analysis, blotting techniques and enzymatic assays on vitro leaves of putative transgenic regenerates. In order to assess the uniformity and the stability of transfer DNA (T-DNA) integration and gene expression, we studied 26 transgenic apple lines carrying the attacin E gene from Hyalophora cecropia, the β-glucuronidase gene, and the nptII gene. Plants were evaluated using standard molecular techniques, such as PCR, Southern blot, reverse transcription PCR (RT-PCR) and Enzyme Linked Immunosorbent Assay (ELISA), and propagated in vitro on non-selective antibiotic-free media for four years to... |
| Tipo: Journal article |
Palavras-chave: Agrobacterium tumefaciens; Apple; Chimeric tissue; Gene silencing; Malus domestica; T-DNA leakage. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582008000100003 |
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| Carli,Gabriel José de; Rotela,Abdon Troche; Lubini,Greice; Contiliani,Danyel Fernandes; Candia,Nidia Benítez; Depintor,Thiago S.; Abreu,Fabiano Carlos Pinto de; Simões,Zilá Luz Paulino; Ríos,Danilo Fernández; Pereira,Tiago Campos. |
| Abstract RNA interference (RNAi) is a powerful gene silencing technology, widely used in analyses of reverse genetics, development of therapeutic strategies and generation of biotechnological products. Here we present a free software tool for the rational design of RNAi effectors, named siRNA and shRNA designer (SSD). SSD incorporates our previously developed software Strand Analysis to construct template DNAs amenable for the large scale production of mono-, bi- and trivalent multimeric shRNAs, via in vitro rolling circle transcription. We tested SSD by creating a trivalent multimeric shRNA against the vitellogenin gene of Apis mellifera. RT-qPCR analysis revealed that our molecule promoted a decrease in more than 50% of the target mRNA, in a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gene silencing; SiRNA; Multimeric; ShRNA; Free software. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572020000100802 |
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| Lenz,G.. |
| The discovery of double-stranded RNA-mediated gene silencing has rapidly led to its use as a method of choice for blocking a gene, and has turned it into one of the most discussed topics in cell biology. Although still in its infancy, the field of RNA interference has already produced a vast array of results, mainly in Caenorhabditis elegans, but recently also in mammalian systems. Micro-RNAs are short hairpins of RNA capable of blocking translation, which are transcribed from genomic DNA and are implicated in several aspects from development to cell signaling. The present review discusses the main methods used for gene silencing in cell culture and animal models, including the selection of target sequences, delivery methods and strategies for a successful... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: RNAi; SiRNA; MiRNA; Gene silencing; Knockdown. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005001200003 |
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| FREITAS-ASTÚA,JULIANA; PURCIFULL,DAN E.; POLSTON,JANE E.; HIEBERT,ERNEST. |
| Viruses of to the family Geminiviridae are considered some of the most important pathogens in tropical and subtropical regions of the world. Members of one Geminiviridae genus, Begomovirus, have been causing severe losses, particularly in tomato (Lycopersicon esculentum) production in the Americas and the Caribbean. Several new begomoviruses have been reported in the region and, at least one, Tomato yellow leaf curl virus (TYLCV), has been brought in from the Old World via infected transplants. In addition, the recombination events that are playing an important role in Begomovirus diversity have increased the complexity of their control. This scenario has led to the search for control measures that go beyond traditional host genetic resistance, chemical... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Whitefly-transmitted geminivirus; Gene silencing; Plant transformation; Tomato begomovirus; Geminivirus control; Geminiviridae. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582002000500001 |
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| Registros recuperados: 10 | |
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