Tag Archives: protein

Study of human blood fluke parasites identifies drug resistance mutations

"This is a major advance," said Claudia Valentim, Ph.D., the primary author of the report, who worked at both institutions. "We were able to identify the critical gene by crossing resistant and sensitive worms in the laboratory and then analyzing the genomes of the progeny. This method is commonly used for fruit flies and other laboratory organisms, but has not previously been possible for schistosome parasites." "This really shows the utility of genome sequencing," says Anderson. "The schistosome genome was published in 2009…

Drug strategy blocks leading driver of cancer

Using a new strategy, UC San Francisco researchers have succeeded in making small molecules that irreversibly target a mutant form of this protein, called ras, without binding to the normal form. This feature distinguishes the molecules from all other targeted drug treatments in cancer, according to the researchers. When tested on human lung cancer cells grown in culture, the molecules efficiently killed the ras-driven cancer cells. …

‘Undruggable’ mutation meets its match

Now, Howard Hughes Medical Institute (HHMI) researchers at the University of California, San Francisco have identified and exploited a newfound "Achilles heel" in K-Ras. The weak point is a newly discovered "pocket," or binding site, identified by HHMI investigator Kevan M. Shokat and colleagues. Shokat and his team have designed a chemical compound that fits inside this pocket and inhibits the normal activity of mutant K-Ras, but leaves the normal protein untouched…

Experimental drug shows promise in lung cancer

The preliminary results of a phase 1B study were presented by Dr. Edward Garon, director of thoracic oncology at UCLA’s Jonsson Comprehensive Cancer Center, on Tuesday October 29 at the 15th World Conference on Lung Cancer. The summit was held by the International Association for the Study of Lung Cancer, in Sydney, Australia…

Researchers develop label-free automatic cancer diagnostics

Diagnosis: colon cancer Today pathologists slice tissue obtained from biopsies into thin sections, stain them chemically, and eventually identify colon cancer by visual inspection under the microscope. This is usually done at an advanced stage of the disease, and the method provides no information about the molecular causes of the tumour. …

Researchers apply brainpower to understanding neural stem cell differentiation

The researchers donned their thinking caps to explain how neural stem and progenitor cells differentiate into neurons and related cells called glia. Neurons transmit information through electrical and chemical signals; glia surround, support and protect neurons in the brain and throughout the nervous system. Glia do everything from holding neurons in place to supplying them with nutrients and oxygen to protecting them from pathogens. …

Antibody-drug conjugate may provide new treatment option for pancreatic cancer patients

Antibody-drug conjugates are a new type of targeted anticancer therapy, which use an antibody to deliver an attached drug directly to those cells that display the antibody’s target on their surfaces. This precision reduces the side effects of the attached drug compared with conventional systemic administration. Currently, there are two U.S…