Gene Expression News and Research

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Gene Expression is the process by which a gene gets turned on in a cell to make RNA and proteins. Gene expression may be measured by looking at the RNA, or the protein made from the RNA, or what the protein does in a cell.

Body has more than one body clock

Research conducted at Oregon Health & Science University suggests that contrary to popular belief, the body has more than one "body clock."

23 May 2006

Gene expression becomes heterogeneous with age

In a study of the effects of aging on gene expression, researchers have found that variation in gene expression among individuals tends to increase with age.

23 May 2006

Signaling pathways required for expansion of insulin-producing beta cells

IDDM, which used to be referred to as Type 1 diabetes, results from selective destruction of insulin-producing pancreatic islet beta cells by the body's immune system.

17 May 2006

Association between Pak1 expression and subcellular localization and tamoxifen resistance in breast cancer patients

A protein that activates estrogen receptors in breast cancer may play a role in resistance to therapeutic effects of anti-estrogen tamoxifen treatment, according to a study in the Journal of the National Cancer Institute.

17 May 2006

Mental activity leads to mental agility

Scientists have long known that brains need neural activity to mature and that sensory input is most important during a specific window of time called the "critical period" when the brain is primed for aggressive learning.

10 May 2006

Neurons can produce Alzheimer's-linked apolipoprotein E

A question long debated among Alzheimer's disease researchers has been definitively answered by scientists at the Gladstone Institute of Neurological Disease in San Francisco.

10 May 2006

New insight into the way an embryonic retina cell develops

The discovery provides a new vantage point for understanding how a healthy visual system develops. It also raises the possibility of re-directing the production of cell types as needed to stave off eye disease.

9 May 2006

Effective gene suppression using small interfering RNA in hard-to-transfect human T cells

A technical advance in laboratory techniques may provide biology researchers broader access to RNA interference, a process of blocking the activity of targeted genes. RNA interference has recently emerged as an important tool in studying how genes function in normal biological processes and in disease.

9 May 2006

Alveolar type I cells as diagnostic markers for acute lung injury

Recent work in an Oklahoma State University lab on type I cells in the alveoli has opened up a new field of investigation.

8 May 2006

Gene silencing protein discovered

A team of researchers, including biologists at Washington University in St. Louis, has discovered the key role one protein plays in a major turn-off -in this case, the turning off of thousands of nearly identical genes in a hybrid plant.

8 May 2006

A pericellular collagenase directs the 3-D development of white adipose tissue

In the journal Cell, researchers report the serendipitous discovery that the initial development of fat requires a "remodeling" protein that must first make way for the lipid-laden tissue's growth.

8 May 2006

Novel protein JHDM2A offers new look at male hormone regulation

For the second time in less than a year, University of North Carolina at Chapel Hill scientists have purified a novel protein and have shown it can alter gene activity by reversing a molecular modification previously thought permanent.

8 May 2006

New approaches to genetic disease, based on cells' own ability to correct themselves

New approaches to genetic disease, based on cells' own ability to correct themselves, will be outlined today at the annual conference of the European Society of Human Genetics in Amsterdam, The Netherlands.

8 May 2006

DARPA grant supports research toward realizing tissue regeneration

While U.S. soldiers fighting in Iraq and Afghanistan are surviving injuries that in previous conflicts likely would have been fatal, the number of wounded with major tissue loss has never before been so high.

3 May 2006

Hormones may affect how brain listens

From zebra fish to humans, reproductive hormones govern behavioral responses to courtship signals.

3 May 2006

Amyloid protein content in the brain linked to Alzheimer's disease risk

Researchers from the Flanders Interuniversity Institute for Biotechnology (VIB) connected to the University of Antwerp are the first to show that the quantity of amyloid protein in brain cells is a major risk factor for Alzheimer's disease. Amyloid protein has already been known to be the primary component of the senile plaques in the brains of patients. The new discovery demonstrates that the greater the quantity of the protein that is produced, the younger the dementia patient is.

28 Apr 2006

Prefrontal cortex in the brain damaged by both alcoholism and chronic smoking

Alcoholism is commonly associated with chronic smoking, and both alcohol and nicotine are believed to act on the same brain region. Research builds upon previous research that identified four potential alcohol-sensitive genes in the prefrontal cortex, finding that smoking also influences the expression of these genes.

26 Apr 2006

Scientists gain greater understanding of how embryos differentiate left from right

Researchers at the Forsyth Institute have discovered a new mechanism responsible for early left/right patterning, the process by which organs locate themselves on the left or right side of the body.

19 Apr 2006

St. Jude develop strategy to speed future development of more effective and less toxic treatments for medulloblastoma

Investigators at St. Jude Children’s Research Hospital have developed a strategy to speed future development of more effective and less toxic treatments for medulloblastoma, a type of brain cancer. Medulloblastomas arise in the back of the brain and account for about 20 percent of childhood brain tumors.

18 Apr 2006

Microarray analysis could lead to better understanding of mechanisms underlying the genetic propensity toward excessive drinking

The meta analysis, which examined more than 4.5 million data points on more than 100 microarrays from mouse models, also identified more than 1,300 functional groups, including signaling and transcription pathways, which may also play an important role in establishing a capacity for a "high level of alcohol consumption."

18 Apr 2006