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.

Women more prone to brain damage from alcohol abuse than men

Alcoholism has traditionally been considered a male disease because there are many more alcoholic males than females.

27 Jul 2007

Tonsil epithelial factors may influence oropharyngeal HIV transmission

Current research demonstrates that the tonsils may possess the necessary factors to act as a transmission site for the spread of HIV.

27 Jul 2007

Scientits devise dimmer swith to regulate gene expression in mammal cells

Three Boston University biomedical engineers have created a genetic dimmer switch that can be used to turn on, shut off, or partially activate a gene's function. Professor James Collins, Professor Charles Cantor and doctoral candidate Tara Deans invented the switch, which can be tuned to produce large or small quantities of protein, or none at all.

27 Jul 2007

New findings on gene-transcription machinery

For some time, scientists have been tracking down the sequence of biochemical steps required to attract and assemble at the head end of a gene the molecular machinery needed to transcribe that gene to put to work the information it encodes.

26 Jul 2007

Effects of aging hematopoietic stem cells

There is little disagreement that the body's maintenance and repair systems deteriorate with age, even as there is plenty of disagreement as to why.

24 Jul 2007

Protein IKKa protects checkpoint gene from chemical shutdown

A protein that is largely absent in one type of skin cancer protects an important gene in a cell's defense against harmful mutations from being silenced, researchers at The University of Texas M. D. Anderson Cancer Center report in the July 20 edition of Molecular Cell.

20 Jul 2007

RNA essential for survival of mature neurons

There are lots of things that brain cells need to survive. Add to that list microRNAs.

19 Jul 2007

Protein km23 - potential target for ovarian cancer treatment

A traffic cop protein in the cell may have an even more important role: transporting a messenger protein that tells components in the nucleus to stop cell growth.

17 Jul 2007

New genomics-based technology

Bruce S. Gillis, M.D., M.P.H., a medical toxicologist and CEO of the research group, The Cytokine Institute, will present a tutorial on a new genomics-based technology, msds1(TM).

16 Jul 2007

microRNA may play an important role in psoriasis and eczema

A research team at the Swedish medical university Karolinska Institutet has shown for the time that microRNA, small RNA molecules, may play an important role in the development of inflammatory skin diseases such as psoriasis and atopic eczema.

12 Jul 2007

Ago2 and hematopoiesis

Argonaute 2 (Ago2) is unique among its family: It is the only one of the four mammalian Argonaute proteins that exhibits endonuclease 'slicer' activity (facilitation of miRNA-guided cleavage of target mRNA).

12 Jul 2007

Magnetic nano tweezers show how cancer drug works

The annoying bulges of an over-wound telephone cord that shorten its reach and limit a caller's motion help to explain why drugs called camptothecins are so effective in killing cancer cells, according to investigators at St. Jude Children's Research Hospital and Delft University of Technology.

10 Jul 2007

New insights into acute promyelocytic leukemia

Results from two new studies provide key mechanistic insights into the complex molecular events that cause a deadly type of leukemia.

10 Jul 2007

Researchers discover how microRNAs control protein synthesis

While most RNAs work to create, package, and transfer proteins as determined by the cell's immediate needs, miniature pieces of RNA, called microRNAs (miRNAs) regulate gene expression.

10 Jul 2007

Gene therapy offers promising approach to tackle pancreatic cancer

A molecularly engineered therapy selectively embeds a gene in pancreatic cancer that shrinks or eradicates tumors, inhibits metastasis, and prolongs survival with virtually no toxicity, researchers from The University of Texas M. D. Anderson Cancer Center report in the July 9 edition of Cancer Cell.

10 Jul 2007

Chronic fatigue: clues in the blood

Researchers at the University of New South Wales (UNSW) believe that blood may hold vital insights into what is happening in the brain of patients with chronic fatigue syndrome (CFS).

8 Jul 2007

RNA molecules can orchestrate gene activity across vast portions of the human genome

Large, seemingly useless pieces of RNA - a molecule originally considered only a lowly messenger for DNA - play an important role in letting cells know where they are in the body and what they are supposed to become, researchers at Stanford University School of Medicine have discovered.

29 Jun 2007

Support for chromosomal theory of cancer found in cancers' development of drug resistance

Thirty-six years into the war on cancer, scientists have not only failed to come up with a cure, but most of the newer drugs suffer from the same problems as those available in the pre-war days: serious toxicity, limited effectiveness and eventual resistance.

28 Jun 2007

New genetic test advances detection and diagnosis of muscular dystrophy

A new genetic test targeting the most common types of muscular dystrophy--those caused by mutations in the dystrophin gene--is far quicker with greater accuracy and sensitivity than existing tests.

28 Jun 2007

New genetic marker characterizes aggressiveness of cancer cells

Levels of a small non-coding RNA molecule called let-7 appear to define different stages of cancer better than some of the "classical" markers for tumor progression, researchers from the University of Chicago report in the June 25, 2007, early online edition of the Proceedings of the National Academy of Sciences.

26 Jun 2007