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Cynomolgus macaque (left), also known as the crab-eating macaque, and Chinese rhesus macaque (right). Researchers from The South China Center for Innovative Pharmaceuticals and BGI-Shenzhen have sequenced and compared the genomes of these two biomedically important species (p 1019). Credit: Marina Corral; photos courtesy of Guangmei Yang.
Following approval of hepatitis C virus protease inhibitors Incivek and Victrelis, companies are partnering to devise all-oral combination antiviral regimens without interferon α. But the virus is a long way from vanquished. Ken Garber investigates.
Affymetrix was an early mover in the DNA microarray space that came to dominate the market, overcoming criticism from its users and a slew of cutthroat competitors. How did it do it?
The development of original research requires tacit as well as explicit knowledge, which allows for the establishment of new epistemic trajectories with novel epistemic horizons. Much of the tacit knowledge involved in the innovation process can be transmitted as explicit knowledge through the patent document.
A mathematical concept known as a de Bruijn graph turns the formidable challenge of assembling a contiguous genome from billions of short sequencing reads into a tractable computational problem.
In vivo silencing in specific cell types remains the main obstacle for therapeutic applications of siRNAs. Leuschner et al. now show that an optimized lipid nanoparticle delivers siRNA to inflammatory monocytes in mice and, when transporting CCR2 siRNA, has therapeutic effects in cardiovascular disease, cancer and transplant rejection.
Cardiomyocytes generated from human pluripotent stem cells have many potential applications in drug screening, disease modeling and cell therapy. Dubois et al. describe a cell-surface marker that allows the isolation of highly enriched populations of cardiomyocytes from differentiation cultures.
The cynomolgus and Chinese rhesus macaques are used as animal models in biomedical research. Yan et al. sequence their genomes and compare the sequences to that of the Indian rhesus macaque, providing a genetic foundation for interpreting research results.
With the cost of DNA sequencing falling rapidly, sample preparation is becoming a bottleneck to surveying genetic variation across large populations or performing clinical diagnostics. Myllykangas et al. present an efficient approach for targeted sequencing in which genomic regions of interest are captured and sequenced inside a flow cell using a common oligonucleotide probe.
Factor Xa would be ideally suited to control unregulated bleeding were it not for its extremely short half-life and tendency to overactivate clotting mechanisms. Ivanciu et al. show that a longer lived but less active variant of the protease restores hemostasis in mouse models of hemophilia without thrombotic complications.
Mass-release of sterile male mosquitoes is a promising option for controlling dengue and malaria, but it has never been shown that lab-raised transgenic males can compete effectively with their wild counterparts outside laboratory conditions. Promising results from a restricted field trail now suggest the feasibility of extending the approach for large-scale mosquito-control programs.
The promiscuity of most kinase inhibitors can cause drug toxicity and complicate the interpretation of experiments. Rather than assessing kinase-compound binding, Anastassiadis et al. use functional assays to profile the activities of 178 commercially available kinase inhibitors against 300 recombinant human protein kinases.
Davis et al. extend their previous efforts to use inhibitor-kinase interactions to understand kinase inhibitor selectivity by profiling the binding of 72 kinase inhibitors to 442 human kinase catalytic domains. The data reveal group-specific differences in selectivity and suggest the feasibility of developing reasonably specific inhibitors for most kinases.