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RNA interference permanently silences key breast cancer gene

In laboratory mouse experiments, researchers at The University of Texas M. D. Anderson Cancer Center have developed a way to use RNA interference (RNAi) so that it permanently hampers breast cancer development. The technique permanently silences activated STAT3, a crucial gene found in some human breast tumors, thus reducing the cancer's ability to become invasive.

20 Apr 2005

Reducing expression of a gene called BRCC36 makes breast cancer cells more responsive to ionizing radiation

The research was presented today at the 96th Annual Meeting of the American Association for Cancer Research (AACR) in Anaheim, Calif. BRCC36 directly interacts with the BRCA1 protein. Almost all invasive breast cancer cells have elevated BRCC36 levels compared to normal breast milk-duct cells.

20 Apr 2005

Breast cancer gene may play a major role in the recurrence of prostate cancer

A gene associated with breast cancer also may play a major role in the recurrence of prostate cancer, according to new research from the University of North Carolina at Chapel Hill School of Medicine and UNC Lineberger Comprehensive Cancer Center.

20 Apr 2005

Louder neurons drown out their quieter neighbors

As the brain develops, neurons reach out helter-skelter to form new connections, only a small number of which take hold. How the brain chooses which connections to keep and which to prune back appears to be governed by which branches have the most electrical activity-a finding that could help to explain how early experiences guide brain development.

20 Apr 2005

Insights could yield new approaches to nerve regeneration

Nervous system development requires billions of neurons to migrate to the appropriate locations in the brain and grow nerve fibers (axons) that connect to other nerve cells in an intricate network.

20 Apr 2005

Gene that plays a key role in brain wiring

The complexity of the brain and, more specifically, how nerve cells form billions of contacts when there are fewer than 30,000 human genes is still a scientific mystery.

20 Apr 2005

New era drug gives hope to Gleevec resistant leukaemia sufferers

Gleevec, a drug regarded by many as having "wonder drug" capabilities in the treatment of chronic myelogenous leukaemia (CML) and other cancers, has been revealed as having shortcomings in that some patients have undergone a relapse after building a resistance to the drug. For others with the advanced stage of the disease, the drug has failed to produce durable remissions.

19 Apr 2005

A simple spit test could predict cancers

In future scientists say, a test as simple as spitting into a collection tube or cup might be a screening test for breast cancer and the early detection of other tumours.

19 Apr 2005

Searching for the right pharmaceutical agent: survival as the indicator

Tumor cells divide fast. They thus require a high supply of components for their DNA, like purines. The biosynthesis of purines could now be a new point of attack for chemotherapy. However, without a natural model, the search for an inhibitor for a cellular process is like the proverbial search for a needle in a haystack. An American research team has developed a clever way to quickly conjure the desired "needle" out of the hay, presenting several candidates to act as starting points for the design of a purine synthesis inhibitor.

19 Apr 2005

Researchers identify marker of heart disease in low-birthweight babies

Some low birth weight infants have large particles rich in apolipoprotein C-1, a blood protein that could put them at risk for heart disease later in life, according to a national study led by Johns Hopkins Children's Center researchers.

19 Apr 2005

Ancient protein could be critical to stopping the uncontrolled division of tumor cells that cause cancer

Molecular Biology and Microbiology professor Mark Muller has found that the protein, called MKRN1, promotes the destruction of an enzyme called telomerase that enables rapid duplication of cells. While researchers have known for years that healthy cells repress telomerase, they haven't understood why.

19 Apr 2005

New method for the study of ion channel gating kinetics

An ion channel is a protein pore that lets ions (charged atoms such as calcium) pass through a cell's membrane. The method fits data to a new class of models, called manifest interconductance rank (MIR) models, which will give researchers a better understanding of the mechanisms by which ion channels open and close.

19 Apr 2005

Short segments of sugar chains useful in search for new drugs for Alzheimer's

Heparansulfate, which is needed for normal fetal development among other things, is also important for the build-up of amyloid, morbid protein deposits that appear in several serious diseases. This is shown by Uppsala scientists in an article published in the Proceedings of the National Academy of Science.

19 Apr 2005

Researchers insert engineered human stem cells into the spinal cords of ALS-afflicted rats

Unveiling a delivery method that may one day help surgeons treat the deadly neurodegenerative disease amyotrophic lateral sclerosis (ALS), researchers at the University of Wisconsin-Madison have inserted engineered human stem cells into the spinal cords of ALS-afflicted rats.

19 Apr 2005

Vegetables such as broccoli and spices like red chili pepper, may provide a cancer-fighting benefit

Two new studies suggest that vegetables such as broccoli and spices like red chili pepper, may provide a cancer-fighting benefit by slowing or preventing the growth of cancerous tumor cells. The findings, being presented at the annual meeting of the American Association for Cancer Research held April 16 to 20 at the Anaheim Convention Center in Anaheim, Calif., looked at the effect of these dietary agents on cancers that have extremely poor prognoses despite advances in surgery and other therapies.

19 Apr 2005

Protein studies may lead to new Alzheimer's test

A study appearing in an upcoming issue of the Journal of Alzheimer's Disease, published by IOS Press, entitled "Quantitative proteomics of cerebrospinal fluid from patients with Alzheimer disease," may lead to a new test for diagnosing the devastating illness. About 4 million Americans suffer from Alzheimer's disease, the most common form of dementia, characterized by memory loss and an inability to use language.

19 Apr 2005

Marker of heart disease in low-birthweight babies identified

19 Apr 2005

Compound derived from cottonseed oil could help improve the effectiveness of chemotherapy at treating head and neck cancer

The findings, which will be presented Tuesday, April 19, at the American Association for Cancer Research annual meeting, could lead to a treatment that provides an effective option to surgically removing the cancer, helping patients preserve vital organs involved in speech and swallowing.

19 Apr 2005

Novel liquid adhesive made from a protein found in human tissue effective in sealing corneal wounds

A liquid adhesive made from a protein found in human tissue is effective in sealing corneal wounds and may even be better than stitches, according to results of a Johns Hopkins study.

19 Apr 2005

Alternate view for pathology of Alzheimer's disease

A new paper from researchers at the Case Western Reserve University School of Medicine challenges the classic theory that the nerve tangles seen in the brains of Alzheimer's disease (AD) victims are the cause of the disease, but rather proposes that they are a protective response to the disease. Their paper appears in the April issue of the journal Trends in Molecular Medicine.

19 Apr 2005