MicroRNA News and Research

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In genetics, microRNAs (miRNA) are single-stranded RNA molecules of 21-23 nucleotides in length, which regulate gene expression. miRNAs are encoded by genes from whose DNA they are transcribed but miRNAs are not translated into protein (i.e. they are non-coding RNAs); instead each primary transcript (a pri-miRNA) is processed into a short stem-loop structure called a pre-miRNA and finally into a functional miRNA. Mature miRNA molecules are partially complementary to one or more messenger RNA (mRNA) molecules, and their main function is to down-regulate gene expression.

microRNAs manipulate cells to one day create safe embryonic-like stem cells

A team of UCSF researchers has for the first time used tiny molecules called microRNAs to help turn adult mouse cells back to their embryonic state.

12 Apr 2009

New genetic understanding of progressive hearing loss

In parallel studies in human and mouse, two groups of researchers have come to the same conclusion: that a new kind of gene is associated with progressive hearing loss.

12 Apr 2009

Discovery of genetic markers for aggressive head and neck cancer

Scientists at Albert Einstein College of Medicine of Yeshiva University have identified genetic markers that signal poor outcomes for patients with head and neck cancer.

20 Mar 2009

MicroRNA undermines tumor suppression

Scientists at the Whitehead Institute for Biomedical Research and the National University of Singapore have discovered the first microRNA (miRNA) capable of directly tamping down the activity of the well known tumor-suppressor gene, p53, While p53 functions to prevent tumor formation, the p53 gene is thought to malfunction in more than 50% of cancerous tumors.

17 Mar 2009

Molecule provides clues about how HPV may lead to cancer

New research shows for the first time that certain types of human papillomavirus (HPV), which cause cervical and some other types of cancer, can inhibit the production of a tiny single-stranded RNA called microRNA 34a, or miR-34a.

4 Mar 2009

New insight into the expression of microRNAs

Two independent, upcoming G&D papers lend new insight into the expression of microRNAs and their targets during vertebrate development.

25 Feb 2009

Newly discovered mutation can hold the key to treat a large number of different cancers

Scientists have discovered a mutation responsible for cancer progression, a finding with potential implications for the development of treatment against not one, but a series of cancer types since this mutation can be linked to an abnormality recently discovered to exist in all malignancies.

18 Feb 2009

Micro RNA plays a key role in melanoma metastasis

Scientists have long wondered how melanoma cells travel from primary tumors on the surface of the skin to the brain, liver and lungs, where they become more aggressive, resistant to therapy, and deadly.

9 Feb 2009

New method captures microRNAs before they disappear

One of the tiniest entities in the human genome - are great escape artists.

27 Jan 2009

Discovery of potential biomarker for smoking-related lung diseases

Researchers from Boston University School of Medicine (BUSM) have demonstrated that a recently discovered class of molecule called microRNA (miRNAs), regulate the gene expression changes in airway cells that occur with smoking and lung cancer.

13 Jan 2009

Study links MiR-29 molecule to muscle maturation, muscle cancer

Researchers at The Ohio State University Comprehensive Cancer Center have discovered that a molecule implicated in leukemia and lung cancer is also important in muscle repair and in a muscle cancer that strikes mainly children.

1 Jan 2009

Levels of two proteins impact survival in ovarian cancer

Levels of two proteins in a woman's ovarian cancer are strongly associated with her likelihood of survival, a research team led by scientists at The University of Texas M. D. Anderson Cancer Center reports in the Dec. 18 issue of the New England Journal of Medicine.

17 Dec 2008

Intradigm issued new RNAi therapeutics patent

Intradigm Corporation has announced the issuance of United States patent 7,459,547, entitled "Methods and Compositions for Controlling Efficacy of RNA Silencing."

3 Dec 2008

Discovery of key contributor to Alzheimer's disease process

Walter J. Lukiw, PhD, Associate Professor of Neuroscience and Ophthalmology at LSU Health Sciences Center New Orleans, is the lead author of a paper identifying, for the first time, a specific function of a fragment of ribonucleic acid (RNA), once thought to be no more than a byproduct, in regulating inflammation and the development of Alzheimer's disease.

16 Nov 2008

Variations in gene pathway alter risk of esophageal cancer

Variations in a common gene pathway may affect esophageal cancer risk, a dangerous and rapidly increasing type of cancer, according to research by scientists at The University of Texas M. D. Anderson Cancer Center.

6 Nov 2008

Short RNAs show a long history

MicroRNAs, the tiny molecules that fine-tune gene expression, were first discovered in 1993. But it turns out they've been around for a billion years.

1 Oct 2008

MicroRNAs help control blood-vessel development

The development and repair of heart tissue and blood vessels is intimately tied to a tiny piece of ribonucleic acid (RNA) that is found nowhere else in the body, researchers at UT Southwestern Medical Center have found.

12 Aug 2008

Scientists identify microRNA that controls blood vessel development - therapeutic target for a number of diseases

Scientists from the Gladstone Institute of Cardiovascular Disease (GICD) and UCSF have identified a key regulatory factor that controls development of the human vascular system, the extensive network of arteries, veins, and capillaries that allow blood to reach all tissues and organs.

11 Aug 2008

How short RNAs influence many proteins

During the last decade, microRNAs have emerged somewhat surprisingly as key players in the way genes are regulated. These short snippets of RNA do their work by interacting with messenger RNAs, which act as blueprints for protein creation.

6 Aug 2008

microRNA may influence development of alcohol tolerance

In recent years, a class of small molecules known as microRNAs have been found to play an important role in regulating gene products in most animal and plant species.

30 Jul 2008