Regulation and Function of miR-218 in Gastric Cancer Metastasis
Tie, Pan et al., PLoS Genetics
Researchers describe a negative feedback system between Robo1, a Slit receptor, and miR-218, wherein “decreased miR-218 levels eliminate Robo1 repression, which activates the Slit-Robo1 pathway through the interaction between Robo1 and Slit2, thus triggering tumor metastasis.” The authors suggest that the restoration of miR-218 supresses Robo1 espression and inhibits tumor cell invasion.
Helicos Human Genome Paper Raises Questions About Cost Savings, Potential Applications of Technology
Some have questioned the paper's claim that it takes "at least 35-40 machine runs with many instruments operating in parallel" and reagent costs of a quarter to a half a million dollars to sequence a human genome on other instruments.
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