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DNA overwinds when stretched

Most of us are familiar with the winding staircase image of DNA, the repository of a biological cell's genetic information. But few of us realize just how tightly that famous double helix is wound.

8 Aug 2006

Scientists find new lead in hunt for a SARS vaccine

SARS coronavirus protein called "nsp1" causes the breakdown of biochemical messages that normally prompt the production of a protein critical to defending the body against viruses.

8 Aug 2006

New tool to study protein kinase A - linked to heart failure

Scientists studying heart cells have devised a new way to visualize and quantify the rise and fall in the activity of a key enzyme linked to heart failure.

8 Aug 2006

Gene amplification links growth controlling pathway from Drosophila to human cancers

Researchers at Harvard Medical School (HMS) and Massachusetts General Hospital (MGH) have discovered a new cancer-promoting role for a gene potentially involved in breast, liver, and other kinds of cancers.

8 Aug 2006

Scientists identify gene involved in stem cell self-renewal in planaria

No matter how you slice it, the freshwater planarian possesses an amazing ability to regenerate lost body parts.

7 Aug 2006

Latex in food wrappers, packaging and rubber gloves must be declared

A new study has revealed that latex contained in packaging and rubber gloves can trigger fatal allergic reactions.

7 Aug 2006

New blood test picks up early breast cancer

A new blood test has been developed by an international team of scientists which can detect the very early stage of breast cancer.

7 Aug 2006

New method of delivering a dose of radioactive iodine

A new method of delivering a dose of radioactive iodine - using a man-made version of scorpion venom as a carrier - targets deadly brain tumors called gliomas without affecting neighboring tissue or body organs.

7 Aug 2006

Leukemia gene changes genetic packaging

A signaling system involved in many forms of leukemia and lymphoma is more powerful than scientists have thought, exerting control over our genes by affecting whole swaths of chromosomes in global fashion.

6 Aug 2006

Role of peptidoglycan protein in immune response may aid HIV research

A family of proteins that serve as the body's first line of defense against bacterial infections may provide a lifeline for individuals with compromised immune systems.

6 Aug 2006

For the first time, scientists watch neurons change in response to experience

Thanks to a new imaging system, researchers at MIT's Picower Institute for Learning and Memory have gotten an unprecedented look into how genes shape the brain in response to the environment.

6 Aug 2006

Aggressive melanoma cells secrete Nodal - protein critical to embryo formation

A Northwestern University research group has discovered that aggressive melanoma cells secrete Nodal, a protein that is critical to proper embryo formation.

6 Aug 2006

Genetics is a very strong component of obesity

Nearly 6 percent of morbidly obese children and adults have a genetic defect that keeps them feeling like their stomach is running on empty, no matter how much they have eaten.

6 Aug 2006

Tocotrienol - a potent neuroprotective agent

Two recent studies offer new evidence suggesting an alternative form of natural vitamin E can be taken by mouth and will reach the blood in humans at levels determined to protect against stroke and other diseases.

6 Aug 2006

Interleukin 21 may enhance the effectiveness of Herceptin

Preliminary research suggests that a drug that targets a particular type of breast cancer might be more effective if patients are also given a substance made by the body that stimulates certain immune cells.

6 Aug 2006

Researchers identify how molecules of microRNA are responsible for the growth of blood vessels in a model for human colon cancer

The process, called angiogenesis, results in ability of ravenous cancer cells to recruit blood vessels and receive a steady supply of nutrients and oxygen.

4 Aug 2006

Turning the immune system against cancer

Medicine can now prevent a host of diseases with a mere shot of vaccine. Polio and smallpox are almost non-existent, and mumps and chicken pox are rarely seen nowadays.

4 Aug 2006

Methamphetamine increases production of protein that promotes the spread of the HIV-1 virus in infected drug users

Researchers at the University at Buffalo have presented the first evidence that the addictive drug methamphetamine, or meth, also commonly known as "speed" or "crystal," increases production of a docking protein that promotes the spread of the HIV-1 virus in infected users.

4 Aug 2006

Transgenic goat's milk could help tackle children's intestinal disease

Milk produced by transgenic goats, which carry the gene for an antibacterial enzyme found in human breast milk, altered the intestinal bacteria in young goats and pigs that were fed the milk.

4 Aug 2006

BRIT1 gene plays a pivotal role in DNA damage detection and repair

A single gene plays a pivotal role launching two DNA damage detection and repair pathways in the human genome, suggesting that it functions as a previously unidentified tumor suppressor gene.

3 Aug 2006