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A new system for collaboration in cell communication

Investigators from the Institute of Research in Biomedicine (IRB Barcelona) have identified a new signalling mechanism among cells in the fruit fly, Drosophila melanogaster.

27 Jun 2007

New genetic marker characterizes aggressiveness of cancer cells

Levels of a small non-coding RNA molecule called let-7 appear to define different stages of cancer better than some of the "classical" markers for tumor progression, researchers from the University of Chicago report in the June 25, 2007, early online edition of the Proceedings of the National Academy of Sciences.

26 Jun 2007

New understanding of cancer inhibitor topotecan

Researchers in Delft University of Technology's Kavli Institute of Nanoscience in The Netherlands have cast new light on the workings of the important cancer inhibitor topotecan.

26 Jun 2007

Scoliosis gene found

Physicians have recognized scoliosis, the abnormal curvature of the spine, since the time of Hippocrates, but its causes have remained a mystery -- until now. For the first time, researchers have discovered a gene that underlies the condition, which affects about 3 percent of all children.

26 Jun 2007

Does air pollution have a bigger effect on the immune system of females than males?

Does air pollution have a bigger effect on the immune system of females than males? It did among mice exposed to ozone -- a major component in air pollution that is known to negatively affect lung function -- and then infected with pneumonia, as significantly more females died from the infection than males.

26 Jun 2007

Genes play unexpected role in their own activation

Investigators at St. Jude Children's Research Hospital have discovered how a single molecular "on switch" triggers gene activity that might cause effects ranging from learning and memory capabilities to glucose production in the liver.

23 Jun 2007

Gel capsule for diabetes type 1

There is renewed hope for treatment of diabetes type 1 with gel capsules: Biotechnologists at The Norwegian University of Science and Technology (NTNU) have developed a new type of alginate capsule that could solve the problem of the body's immune system recognizing and attacking alien, implanted insulin cells.

23 Jun 2007

Experimental Alzheimer's drug begins clinical trials

A drug based on the design of a Purdue University researcher to treat Alzheimer's disease began the first phase of human clinical trials this week.

23 Jun 2007

New drug target for the treatment of Parkinson's disease

Researchers at the MassGeneral Institute for Neurodegenerative Disease (MGH-MIND) have identified a potential new drug target for the treatment of Parkinson's disease and possibly for other degenerative neurological disorders.

23 Jun 2007

Invertebrate immune systems are anything but simple

A hundred years since Russian microbiologist Elie Metschnikow first discovered the invertebrate immune system, scientists are only just beginning to understand its complexity.

23 Jun 2007

Scientists identify gene responsible for one type of Charcot-Marie-Tooth disorder

Scientists have identified the gene responsible for one type of Charcot-Marie-Tooth disorder, a common inherited neurological disease, thanks to the chance appearance of a strain of impaired 'pale tremor' mice in a University of Michigan research laboratory.

23 Jun 2007

DNA repair proteins monitored at double-strand break

St. Jude investigators recently had a molecule's eye view of the human cell's DNA repair kit as it assembled on a double-strand break to link together the broken ends.

23 Jun 2007

Novel cellular mechanism that may guide cell movement and possibly cancer cell invasion

Scientists have long thought that microtubules, part of the microscopic scaffolding that the cell uses to move things around in order to hold its shape and divide, originated from a tiny structure near the nucleus, called the centrosome.

23 Jun 2007

Entecavir can compromise HIV treatment

Treating hepatitis B patients with the drug entecavir can cause those who are also infected with HIV to become resistant to two of the most important drugs in the anti-HIV arsenal, according to a new report in the New England Journal of Medicine.

23 Jun 2007

New way to increase stem cells in blood

Researchers at Children's Hospital Boston report finding a new way to increase stem cells in blood, suggesting a possible treatment to help patients who undergo chemotherapy or bone marrow transplant for leukemia and other cancers recover their immune function more quickly.

23 Jun 2007

Multifunctional nanoparticle platforms for targeting and imaging cancer cells

There has been much recent interest in how nanotechnology will impact the field of medicine. Unfortunately, a number of promising nanostructured systems have turned out to be extremely toxic to humans, thus precluding their use in clinical applications and dashing hopes of an early success for the interdisciplinary field of nanobiotechnology.

21 Jun 2007

New molecular mechanism discovered that may 'spontaneously' cause liver cancer

Adding more good news to last week's announcement that Nexavar (sorafenib) may be the first effective treatment for advanced liver cancer, researchers at the Lombardi Comprehensive Cancer Center at Georgetown University have uncovered a new molecular mechanism that may 'spontaneously' cause liver cancer.

20 Jun 2007