Discovered in the nematode c. elegans, miRNA were once thought to be leftovers of an era when RNA ruled life processes on Earth (image by Bob Goldstein, UNC Chapel Hill).
An Arizona State University team has used a unique high-throughput screening system to complete the largest-ever analysis of microRNAs (miRNA), the puzzling little cousins of RNA that help regulate gene expression.
Their findings offer a new explanation for why groups of similar miRNA sequences, called miRNA families, are so plentiful in higher species of animals, including humans.
Spatial maps for (from top) the default mode network, frontoparietal network and motor network (image courtesy Gene Alexander of University of Arizona).
The book The Runner’s Brain told runners how their minds could change their running. Now a University of Arizona study says the reverse might be true as well.
Using functional connectivity MRI (fcMRI), they found significant differences in areas that are active when the brain is at rest. Possibly, such networks could play a key role in the effects of aging and neurodegenerative diseases.
Geysers at El Tatio, in Chile. Photo by Chmouel Boudjnah.
Work in the Chilean desert by Arizona State University scientists has reopened debate regarding the biological origins of Martian silica fragments found in 2007 — and strengthened the case for life on Mars billions of years ago.
NASA’s Spirit rover churned up the opaline silica deposits as it explored the Columbia Hills area of Mars’s Gusev Crater.
Watson on Jeopardy stage set at the Computer History Museum in Mountain View, California. Photo by Atomic Taco.
Barrow Neurological Institute is working with IBM’s Jeopardy-winning supercomputer, Watson, to identify treatment targets for Lou Gehrig’s disease, also known as amyotrophic lateral sclerosis, or ALS.
ALS is a poorly understood neuromuscular disease with only limited treatment options. Its capacity to strike anyone, at any time, seemingly without pattern, has puzzled researchers.
Seventy-plus years into the Atomic Age, the United States still lacks a good radiation-dosage test.
But the ASU Radiation Biodosimetry Test (ARad), a device being developed by Arizona State University’s Biodesign Institute, could soon help doctors triage victims of a nuclear attack by gauging their exposure to ionizing radiation via changes in gene expression.
ARad is one of only a few tests under development that can detect radiation exposure levels. Read/listen to my full story at KJZZ’s Arizona Science Desk: