Protein may help immune system fend off virus
UCLA scientists have shown that a protein called telomerase prevents the premature aging of the immune cells that fight HIV, enabling the cells to divide indefinitely and prolong their defense against infection. Published Nov. 15 in the Journal of Immunology, the research suggests a future therapy for boosting the weakened immune systems of HIV-positive people.
Every cell contains a tiny cellular clock called a telomere, which shortens each time the cell splits in two. Located at the end of the cells chromosome, the telomere limits the number of times a cell can divide. "Immune cells that fight HIV are under constant strain to divide in order to continue performing their protective functions. This massive amount of division shortens these cells telomeres prematurely," explained Dr. Rita Effros, Plott Chair in Gerontology and professor of pathology and laboratory medicine at the David Geffen School of Medicine at UCLA. "So the telomeres of a 40-year-old person infected with HIV resemble those of a healthy 90-year-old person."
Elaine Schmidt | EurekAlert!
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09.12.2016 | Fraunhofer-Institut für Angewandte Polymerforschung IAP
Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.
Topological insulators are currently the hot topic in physics according to the newspaper Neue Zürcher Zeitung. Only a few weeks ago, their importance was...
In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
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