RNA interference (RNAi) has emerged as an extremely versatile and powerful tool in biomedical research. A new study published in the February issue of Nature Structural Biology reports the creation of transgenic mice in which inherited RNAi lowers or silences the expression of a target gene, producing a stable "gene knockdown." This finding extends the power of RNAi to genetic studies in live animals, and has far-reaching implications for the study and treatment of many human diseases.
To adapt RNAi for the study of gene function in mice, Thomas Rosenquist of Stony Brook University (firstname.lastname@example.org; tel: 631-444-8054) and Greg Hannon of Cold Spring Harbor Laboratory (email@example.com; tel: 516-367-8889) used genetic engineering to create mouse embryonic stem cells in which RNAi was targeted to a particular gene. (As Hannon and his colleagues established in a previous study, silencing a gene of interest through RNAi can be efficiently achieved by engineering a second gene that encodes short hairpin RNA molecules corresponding to the gene of interest.)
These stem cells were injected into mouse embryos, and chimeric animals were born. Matings of these chimeric mice produced offspring that contained the genetically engineered RNAi-inducing gene in every cell of their bodies.
Peter Sherwood | EurekAlert!
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Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
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By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.
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COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.
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