Sequencing and Analysis of the Hydra Genome
Chapman, Kirkness et al., Nature
An international research collaboration reports their sequencing and analysis of the Hydra magnipapillata genome, and compare it to the genomes of several other organisms. "The Hydra genome has been shaped by bursts of transposable element expansion, horizontal gene transfer, trans-splicing, and simplification of gene structure and gene content that parallel simplification of the Hydra life cycle," the authors write. They team suggests that comparisons of the Hydra genome to the reported sequences of other animals have helped them to elucidate the evolution of several of the organism's characteristics.
Lung Cancer Trials Advance EGFR-Testing Hypothesis for Iressa and Tarceva, Though Questions Remain
According to an editorial in the New England Journal of Medicine, two new studies suggest "that EGFR mutations represent favorable prognostic markers of survival and are predictive of tumor shrinkage, but the evidence that they can predict a differential effect of tyrosine kinase inhibitors on survival is incomplete."
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