Category Archives: Science News
Some bounce back from stress, while others struggle with it, even developing anxiety and depression as a result. In experiments with mice, researchers have revealed the molecular origins of this so-called stress gap.
Viruses can kill bacteria, or viruses can help the microbes by lending them potentially useful genes. New research shows Staph bacteria have an immune system capable of distinguishing dangerous invaders from potentially beneficial ones. More »
A specialized class of immune cell inhabits the thin layer of tissue that lines the intestine. New experiments reveal how these cells arise, sometimes from other mature immune cells. More »
A new strategy devised by researchers at Rockefeller University harnesses the power of broadly neutralizing antibodies, along with a combination of compounds that induce viral transcription, in order to attack latent reservoirs of HIV-infected cells in an approach termed ‘shock and kill.’ More »
Early in development, chemical signals tell cells whether to turn into muscle, bone, brain or other tissue. By tracking cells’ responses to signals, researchers found the speed at which the signal arrives has an unexpected influence on that decision. More »
By profiling the small RNAs circulating in the blood of healthy people versus those with heart failure, a research team identified three so-called microRNAs with the potential for use as indicators of injury to heart muscle. More »
This new tool promises to allow scientists to explore the as-yet-unknown details of how cells unzip the double-stranded DNA molecule and replicate it, a process crucial to life. More »
Researchers at Rockefeller University have determined that the Abdominal-B (Abd-B) gene, previously known as the gene that sculpts the posterior parts of the developing fly, is also important for a complex courtship behavior, at least in the case of female flies. More »
By confining colonies of human embryonic stem cells to tiny circular patterns on glass plates, researchers have for the first time coaxed them into organizing themselves just as they would under natural conditions. More »
The brains of Alzheimer’s mice treated with the compound RU-505 showed less inflammation and better blood flow than those of untreated mice. The treated mice also performed better on memory tests. More »
Pieces of DNA, including viruses, found outside a microbe’s chromosomes may play a role in disease, but are nearly impossible to identify and sequence using conventional techniques. Researchers at Rockefeller have developed a solution. More »
Rockefeller University researchers announce that they have coaxed a slightly modified form of the HIV-1 virus to not only infect pigtailed macaques but to cause full blown AIDS in the primates, an accomplishment that could accelerate the search for new AIDS treatments or vaccines. More »
Research shows that recovery from deep anesthesia is not a smooth, linear process but is instead a dynamic journey with specific states of activity the brain must temporarily occupy on the way to full recovery. More »
New structural images help explain how young neurons make the right connections, showing how a signal, Netrin-1, interacts with specific receptors that tell neurons in which direction to reach.
A new technique allows researchers to examine gene expression in neurons that send messages to a synapse. A test run examined dopamine neurons that project to the brain region known as the nucleus accumbens.
Soil microbes are believed to make a wealth of as-yet undiscovered molecules, including antibiotics. But getting at them isn’t easy. To make these potentially helpful bugs easier to find, researchers want to create maps, and they need help.
During an infection, the immune system selects B cells that produce antibodies with a high affinity for the pathogen. New research helps explain the details of how these cells are selected and amplified. More »
Researchers have found that the fastener proteins that organize cell division can harness the movement around them to do their work. Movement of filaments within the structure responsible for cell division can cause some of these proteins to shuffle along the path of least resistance and into position. More »