Knockout News and Research

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Chromatin regulation not governed by a uniform histone code

In a novel use of gene knockout technology, researchers at the University of California, San Diego School of Medicine tested the same gene inserted into 90 different locations in a yeast chromosome - and discovered that while the inserted gene never altered its surrounding chromatin landscape, differences in that immediate landscape measurably affected gene activity.

4 Jan 2013

Study identifies mechanism by which bacterium S. aureus colonizes nasal passages

A collaboration between researchers at the School of Biochemistry and Immunology and the Department of Microbiology at Trinity College Dublin has identified a mechanism by which the bacterium Staphylococcus aureus (S. aureus) colonizes our nasal passages. The study, published today in the Open Access journal PLOS Pathogens, shows for the first time that a protein located on the bacterial surface called clumping factor B (ClfB) has high affinity for the skin protein loricrin.

29 Dec 2012

Scientists identify molecular mechanism central to development of osteoarthritis pain

Researchers at Rush University Medical Center, in collaboration with researchers at Northwestern University, have identified a molecular mechanism central to the development of osteoarthritis (OA) pain, a finding that could have major implications for future treatment of this often-debilitating condition.

28 Dec 2012

Researcher looks at role of TIMP3 protein linked with aortic aneurysms in the abdomen

A researcher with the Faculty of Medicine & Dentistry and the Mazankowski Alberta Heart Institute is looking closely at a molecule linked to aortic aneurysms in the abdomen, and her findings could lead to a treatment to reduce swelling of the aortic artery, which would be a life-saving treatment.

21 Dec 2012

HHS left with key task of setting up insurance exchange for more than half the states

More than 30 states are opting to not build the insurance marketplaces that are at the center of the health overhaul, so the job will be left to the federal government.

17 Dec 2012

Study illuminates how Aldo and galectin-3 protein contribute to vascular remodeling, CHF

Cardiovascular disease will kill nearly 2.5 million people in the United States this year, according to the Centers for Disease Control. Over time, inflammation, collagen deposition and scar tissue formation can cause blood vessels to stiffen, a process called vascular fibrosis. Though researchers have known that the hormone aldosterone (Aldo) plays a role in this process, the precise mechanisms have been poorly understood.

17 Nov 2012

Scientists discover first selective inhibitors of DAGL enzymes

Scientists at The Scripps Research Institute (TSRI) have discovered the first selective inhibitors of an important set of enzymes. The new inhibitors, and chemical probes based on them, now can be used to study the functions of enzymes known as diacylglycerol lipases (DAGL), their products, and the pathways they regulate.

1 Nov 2012

Scientists identify mechanism via Top2b enzyme that drives doxorubicin-induced heart damage

Doxorubicin, a 50-year-old chemotherapy drug still in widespread use against a variety of cancers, has long been known to destroy heart tissue, as well as tumors, in some patients.

29 Oct 2012

Targeted deletion of major VEGF gene in mice induces vision loss

Millions of people with "wet" macular degeneration are prescribed a class of medication known as anti-VEGF drugs. But now scientists at The Scripps Research Institute (TSRI) have found that a drastic reduction of VEGF activity may do more harm than good.

26 Oct 2012

CUMC researchers develop first true mouse model of typhoid infection

Columbia University Medical Center (CUMC) researchers have created the first true mouse model of typhoid infection. The development promises to advance the study of typhoid and the creation of new vaccines against the infection, which remains a major health threat in developing countries.

26 Oct 2012

Study confirms Elf5 protein as tumor suppressor of breast cancer

A protein that is necessary for lactation in mammals inhibits the critical cellular transition that is an early indicator of breast cancer and metastasis, according to research conducted at the University at Buffalo and Princeton University and highlighted as the cover paper in November issue of Nature Cell Biology.

25 Oct 2012

Downregulated protein could be revascularization target in critical limb ischemia

Levels of calcium-sensor protein, S100A1, are downregulated in patients with critical limb ischemia, say researchers who believe the protein could be a potential therapeutic target to promote revascularization.

12 Oct 2012

Novel target identified for fragile X-linked autism

Researchers have elucidated a novel mechanism through which fragile X syndrome may contribute to behavioural symptoms of autism and identified a potential therapeutic target.

1 Oct 2012

Life Technologies receives FDA clearance for OpTmizer CTS T-cell expansion media

Life Technologies Corporation today announced it has received FDA 510(k) clearance for its OpTmizer CTS T-Cell Expansion Tissue Culture Medium – a reagent that is now cleared as a Class II medical device and offers cost- and time-saving advantages for transitioning studies from the research bench to clinical trials.

28 Sep 2012

LIFR protein suppresses local invasion and metastasis of breast cancer cells

A receptor protein suppresses local invasion and metastasis of breast cancer cells, the most lethal aspect of the disease, according to a research team headed by scientists from The University of Texas MD Anderson Cancer Center.

25 Sep 2012

New mouse models can help scientists study SECISBP2 syndrome

New mouse models can help scientists study a rare disease, called SECISBP2 syndrome, that causes abnormal thyroid hormone metabolism, delayed bone maturation, as well as other abnormal characteristics that vary by individual, according to new data presented at the 82nd Annual Meeting of the American Thyroid Association (ATA) in Québec City, Québec, Canada.

24 Sep 2012

New mouse models can help scientists study MCT8 deficiency

New mouse models can help scientists study MCT8 deficiency, an inherited genetic disorder affecting children, according to new data presented at the 82nd Annual Meeting of the American Thyroid Association (ATA) in Québec City, Québec, Canada.

21 Sep 2012

Lack of Atoh1 master gene can lead to sudden infant death syndrome

When mice are born lacking the master gene Atoh1, none breathe well and all die in the newborn period. Why and how this occurs could provide new answers about sudden infant death syndrome (SIDS), but the solution has remained elusive until now.

7 Sep 2012

Study shows how NCAN gene results in manic symptoms of bipolar disorder

Flying high, or down in the dumps - individuals suffering from bipolar disorder alternate between depressive and manic episodes. Researchers from the University of Bonn and the Central Institute of Mental Health in Mannheim have now discovered, based on patient data and animal models, how the NCAN gene results in the manic symptoms of bipolar disorder. The results have been published in the current issue of "The American Journal of Psychiatry."

1 Sep 2012

Study utilizes integrative approach to probe biology of bipolar disorder

The more that we understand the brain, the more complex it becomes. The same can be said about the genetics and neurobiology of psychiatric disorders. For "Mendelian" disorders, like Huntington disease, mutation of a single gene predictably produces a single clinical disorder, following relatively simple genetic principals. Compared to Mendelian disorders, understanding bipolar disorder has been extremely challenging. Its biology is not well understood and its genetics are complex.

21 Aug 2012