iTRAQ

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Applied Biomics this week added Isobaric Tags for Relative and Absolute Quantitation, or iTRAQ, services to its line of proteomics offerings.

The screens, done independently by one Harvard-led and one MIT-led research team, both identified the protein Grb10 as an mTOR substrate and a likely tumor suppressor involved in regulating PI3K activity.

The analytical strategy, which combines CID and HCD, provides sensitive and accurate protein identification, as well as isobaric-labeling-based quantitation, specifically iTRAQ labeling, on ion trap mass specs and LTQ Orbitraps, its developers said.

In an evaluation on the MCF-7 breast cancer cell line cultured in 17-beta estradiol and tamoxifen, the method detected 530 proteins and quantified 230 of them. The researchers selected 16 differentially expressed proteins "demonstrating the potential of iTRAQ/PQD-MS for biomarker discovery applications."

An artificial intelligence-based analysis suggests a third group of ancient hominins likely interbred with human ancestors, according to Popular Mechanics.

In Science this week: reduction in bee phylogenetic diversity, and more.

The New York Times Magazine looks into paleogenomics and how it is revising what's know about human history, but also possibly ignoring lessons learned by archaeologists.

The Economist reports on Synthorx's efforts to use expanded DNA bases they generated to develop a new cancer drug.