Skip to main content
Premium Trial:

Request an Annual Quote

Genome Technology s Peer Review: A Weekly Forum of Recently Published Journal Articles: Jan 25, 2005

Following is a description of a recently published research paper recommended by a scientist involved in integrated biology. The recommender, Mark Duncan, is director of the University of Colorado Cancer Center Proteomics Core at the University of Colorado Health Sciences Center in Denver. This installment was reported and written by John MacNeil, a Genome Technology senior editor.


For a complete list of this month's recommended papers, read  Genome Technology, a GenomeWeb News sister publication.

"Temporal analysis of phosphotyrosine-dependent signaling networks by quantitative proteomics," Blagoy Blagoev, Shao-En Ong, Irina Kratchmarova, and Matthias Mann. Nature Biotechnology. 2004; 22 (9): 1139-1145.

"The authors, from the University of Southern Denmark, say they have 'developed a mass spectrometric method that converts temporal changes to differences in peptide isotopic abundance' in order to better understand the dynamics of the phosphotyrosine-based signaling that takes place in early growth factor stimulation, according to the abstract.


"To do this, they metabolically encoded the proteomes of several cell populations 'with different stable isotopic forms of arginine' and then stimulated each population with epidermal growth factor for varying time periods. After quantifying the arginine-containing peptides and combining two experiments for more profiles, 'we identified 81 signaling proteins, including virtually all known epidermal growth factor receptor substrates, 31 novel effectors, and the time course of their activation upon epidermal growth factor stimulation,' the authors state. They contend that these activation profiles will prove critical to a systems biology approach to modeling signaling networks.


"According to recommender Mark Duncan, 'The work is thoughtful, thorough, and elegant, but most importantly, it demonstrates some of the potential of proteomics methods when skillful and expertly implemented. Techniques such as immunoprecipitation, Western blotting, stable isotope label incorporation, and qualitative and quantitative LC-tandem mass spectrometry are combined to deliver some high-quality hypothesis-generating data. It is a very fine piece of work.'"

The Scan

Genome Sequences Reveal Range Mutations in Induced Pluripotent Stem Cells

Researchers in Nature Genetics detect somatic mutation variation across iPSCs generated from blood or skin fibroblast cell sources, along with selection for BCOR gene mutations.

Researchers Reprogram Plant Roots With Synthetic Genetic Circuit Strategy

Root gene expression was altered with the help of genetic circuits built around a series of synthetic transcriptional regulators in the Nicotiana benthamiana plant in a Science paper.

Infectious Disease Tracking Study Compares Genome Sequencing Approaches

Researchers in BMC Genomics see advantages for capture-based Illumina sequencing and amplicon-based sequencing on the Nanopore instrument, depending on the situation or samples available.

LINE-1 Linked to Premature Aging Conditions

Researchers report in Science Translational Medicine that the accumulation of LINE-1 RNA contributes to premature aging conditions and that symptoms can be improved by targeting them.