Policies are needed to promote the development of nanotechnologies, and funding is needed to carry out research into the benefits and risks of these new technologies for both human health and the environment. These were the main messages coming out of a session on nanotechnology and the environment held during Green Week, an annual event organised by the European Commission.
Using magnetic and fluorescent nanoparticles capable of binding tightly to molecules found only on the surface of cancer cells, scientists have developed a method for collecting and detecting multiple cancer cells from biological samples.
Quantum dots, when injected into animals with brain tumors, accumulate within the outer regions of those tumors. The quantum dots are readily visible when irradiated with light, identifying the outline of the tumor.
Two prestigious nanotechnology prizes will be awarded at "Productive Nanosystems: Launching the Technology Roadmap," a conference sponsored by Society of Manufacturing Engineers and Foresight Nanotech Institute with the support of Battelle, to be held on October 9-10, 2007 in Arlington, Virginia.
The Engineering and Physical Sciences Research Council, the UK Government's leading funding agency for research and training in engineering and the physical sciences, has appointed Professor Richard Jones of the University of Sheffield as the Senior Strategic Advisor for Nanotechnology.
In an attempt to circumvent the mechanisms that cancer cells use to avoid cell death following chemotherapy, researchers have created a polymeric nanoparticle that delivers a one-two punch to multidrug resistant ovarian cancer cells.
Bacteria from an abandoned mine excrete proteins that cause metal nanoparticles to aggregate. The bacteria are binding and immobilizing the metals in the nanoparticles and the nanoparticles themselves, which are potentially toxic to the bacteria.
Researchers report a double inversion of a nanoparticle-containing emulsion: By the successive addition of a surfactant, they were able to convert an oil-water emulsion into a water-oil emulsion and then back again.
Researchers have shown that common bacteria can deliver a valuable cargo of "smart nanoparticles" into a cell to precisely position sensors, drugs or DNA for the early diagnosis and treatment of various diseases.