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Latest Protease Stories

2011-07-11 19:44:41

New tool reveals mutations that cause HIV-drug resistance Protease inhibitor drugs are one of the major weapons in the fight against HIV, the virus that causes AIDS, but their effectiveness is limited as the virus mutates and develops resistance to the drugs over time. Now a new tool has been developed to help predict the location of the mutations that lead to drug resistance. First discovered in 1995, protease inhibitor drugs have dramatically reduced the number of AIDS deaths. Taken in...

2011-04-12 14:30:45

A molecule that lies dormant until it encounters a cancer cell, then suddenly activates and rouses the body's immune system to fight cancer cells directly, marks the latest step in scientists' efforts to tap the body's own resources to fight the disease. The developers of the technology at the University of Rochester Medical Center dub it the "Pacman strategy" because it hinges upon molecular machines produced in abundance by tumors to chew through and gobble up particular chains of...

2011-04-11 16:00:45

Virtually all processes in the human body rely on a unique class of proteins known as enzymes. To study them, scientists want to attach these molecules to surfaces and hold them fast, but this can often be a tricky undertaking. Now Jinglin Fu and his colleagues at the Biodesign Institute at Arizona State University have developed a superior method for immobilizing enzymes on surfaces, deftly controlling their orientation, improving their efficiency and rendering them more stable. The group's...

2011-04-07 21:56:49

Chemical engineers at UC Santa Barbara expect that their new process to create molecular probes may eventually result in the development of new drugs to treat cancer and other illnesses. Their work, reported in the journal Chemistry & Biology, published by Cell Press, describes a new strategy to build molecular probes to visualize, measure, and learn about the activities of enzymes, called proteases, on the surface of cancer cells. Patrick Daugherty, senior author and professor of...

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2011-02-02 10:06:31

With the number of norovirus infection cases rising across the country, scientists from the University of Southampton have successfully crystallized a key norovirus enzyme, which could help in the development of a norovirus treatment. Noroviruses are recognized world-wide as the most important cause of epidemic nonbacterial gastroenteritis (stomach bugs) and pose a significant public health burden, with an estimated one million cases per year in the UK. In the past, noroviruses have also been...

2010-12-16 07:30:00

SOUTH SAN FRANCISCO, Calif., Dec. 16, 2010 /PRNewswire/ -- Catalyst Biosciences, Inc., the leading company in the discovery and development of engineered proteases, today announced the receipt of a $4.0 million milestone payment from Pfizer Inc. under the terms of the collaboration agreement for the development of improved recombinant human Factor VIIa variants for the treatment of hemophilia and other bleeding disorders. "We are very encouraged by the progress made to date in our...

2010-11-29 12:48:15

Publication in Nature Chemical Biology demonstrates that irreversible covalent inhibition can increase selectivity, potency and duration of action, broadens applications for targeted covalent drugs to the protease gene family Avila Therapeuticsâ“ž¢, Inc., a biotechnology company developing novel targeted covalent drugs, has published research in Nature Chemical Biology demonstrating the first-ever selective irreversible inhibition of a viral protease using a...

2010-10-19 16:17:26

Finding may lead to better understanding and earlier detection of breast cancer A new technique that searches blood for the tiniest remnants of broken down proteins has revealed new information about how cells crank up cancer activators called proteases. The results improve researchers' understanding of the mechanics of breast cancer and point to where to look for possible indicators of early disease. Appearing this week in PLoS ONE, the research shows previously unknown contributing factors...

2010-09-08 14:36:12

Switching from protease inhibitors to Nevirapine brings superior results for some HIV-Infected children Nevirapine is widely used to help prevent mother-to-child transmission of the HIV virus. In cases where the infants are nonetheless infected with HIV virus at birth, the standard treatment is to use protease inhibitors (PI) to reduce the amount of virus in their bloodstream. A new study involving 195 infants in South Africa found that children who were treated with PI and then switched to...

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2010-08-03 08:59:02

Scientists from the U.S. Department of Energy's Lawrence Berkeley National Laboratory have obtained the closest look yet of how a gargantuan molecular machine breaks down unwanted proteins in cells, a critical housekeeping chore that helps prevent diseases such as cancer. They pieced together the molecular-scale changes the machine undergoes as it springs into action, ready to snip apart a protein. Their work provides valuable clues as to how the molecular machine, a giant enzyme called...


Word of the Day
tesla
  • The unit of magnetic flux density in the International System of Units, equal to the magnitude of the magnetic field vector necessary to produce a force of one newton on a charge of one coulomb moving perpendicular to the direction of the magnetic field vector with a velocity of one meter per second. It is equivalent to one weber per square meter.
This word is named for Nikola Tesla, the inventor, engineer, and futurist.