With new technology that uses short strands of genetic material to shut down a specific gene, researchers have regulated immune system proteins to boost production of cells that seek and destroy cancer cells. This approach may improve the effectiveness of vaccines in the treatment of tumors, including malignant brain tumors.
Results of the study appear in the June issue of the European Journal of Immunology, and the research was conducted at Cedars-Sinais Maxine Dunitz Neurosurgical Institute, where clinical trials of dendritic cell immunotherapy have been underway for several years.
Dendritic cells are the immune systems most potent antigen-presenting cells – those that identify "foreign" substances for destruction. Because cancer cells often are not recognized by dendritic cells as antigens, the neurosurgeons and other scientists at the Institute have developed and studied a vaccine in the treatment of highly aggressive brain tumors called gliomas. They combine in the laboratory tumor cells that have been surgically removed and dendritic cells derived from a patients blood. The new cells are injected back into the patient to seek out other cancer cells for destruction.
Sandra Van | Van Communications
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DESY and MPSD scientists create high-order harmonics from solids with controlled polarization states, taking advantage of both crystal symmetry and attosecond electronic dynamics. The newly demonstrated technique might find intriguing applications in petahertz electronics and for spectroscopic studies of novel quantum materials.
The nonlinear process of high-order harmonic generation (HHG) in gases is one of the cornerstones of attosecond science (an attosecond is a billionth of a...
Nano- and microtechnology are promising candidates not only for medical applications such as drug delivery but also for the creation of little robots or flexible integrated sensors. Scientists from the Max Planck Institute for Polymer Research (MPI-P) have created magnetic microparticles, with a newly developed method, that could pave the way for building micro-motors or guiding drugs in the human body to a target, like a tumor. The preparation of such structures as well as their remote-control can be regulated using magnetic fields and therefore can find application in an array of domains.
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Due to the special arrangement of its molecules, a new coating made of corn starch is able to repair small scratches by itself through heat: The cross-linking via ring-shaped molecules makes the material mobile, so that it compensates for the scratches and these disappear again.
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The Potsdam Echelle Polarimetric and Spectroscopic Instrument (PEPSI) at the Large Binocular Telescope (LBT) in Arizona released its first image of the surface magnetic field of another star. In a paper in the European journal Astronomy & Astrophysics, the PEPSI team presents a Zeeman- Doppler-Image of the surface of the magnetically active star II Pegasi.
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Researchers at Chalmers University of Technology and the University of Gothenburg, Sweden, have proposed a way to create a completely new source of radiation. Ultra-intense light pulses consist of the motion of a single wave and can be described as a tsunami of light. The strong wave can be used to study interactions between matter and light in a unique way. Their research is now published in the scientific journal Physical Review Letters.
"This source of radiation lets us look at reality through a new angle - it is like twisting a mirror and discovering something completely different," says...
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