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.

Scientists discover the dynamics of transcription in living mammalian cells

Transcription the transfer of DNA's genetic information through the synthesis of complementary molecules of messenger RNA forms the basis of all cellular activities.

7 Aug 2007

Gene fusion subtypes in prostate carcinoma have clinical implications

Building on an earlier study that used Oncomine to identify ETS-fusion proteins in prostate cancer (Science, Oct 28 2005), Tomlins et al. report the identification of four additional classes of ETS rearrangements in prostate cancer, each of which activates ETV1 by a different genetic mechanism (Nature, Aug 2 2007).

3 Aug 2007

Discovery of molecular pathway that detects and eliminates defective messenger RNAs from red blood cells

Other such pathways - known as surveillance pathways - operate in a more general way, in many cell types. Knowing how this specific surveillance system works can help researchers better understand hereditary diseases, in this case, thalassemia, a form of anemia, which is the most common genetic disorder worldwide.

3 Aug 2007

Biological markers of narcolepsy

The first report to identify the biological markers of narcolepsy using gene expression in white blood cells finds that the MX2 gene, which is relevant to the immune system, is significantly less expressed in narcoleptics compared with normal subjects.

2 Aug 2007

Huntington's disease study shows animal models on target

An international team of researchers has published a benchmark study showing that gene expression in several animal models of Huntington's Disease (HD) closely resembles that of human HD patients.

1 Aug 2007

Researchers watch bacteria and antibiotics at the atomic level

A new understanding of an enzyme important for the transfer of genetic information in bacteria may help scientists improve current antibiotics and also create antibiotics that are less vulnerable to resistance.

27 Jul 2007

Gene expression pattern could lead to improved treatment of pediatric septic shock

A consortium of researchers headed by Cincinnati Children's Hospital Medical Center has discovered a gene expression pattern that could lead to improved diagnosis and treatment of pediatric septic shock , still a serious public health problem despite today's potent antibiotics and pediatric intensive care units.

27 Jul 2007

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