Navigation Links
UCSF creates fast, affordable tool for finding gene 'on-off' switches
Date:5/19/2009

UCSF scientists have created a method of quickly identifying large numbers of the genetic material known as short hairpin RNA also called shRNA that turns genes on and off.

The method, which the research team has used to create a library of 22,000 of these "on-off" switches for roughly 600 human genes, provides a tool for scientists throughout the world, with ultimate impacts on the study of the genetic basis of diseases ranging from HIV to high cholesterol, Parkinson's disease or cancer. The team is currently working on creating an shRNA library for the entire human genome.

Findings are available in the Advanced Online Publication section of the journal Nature Methods at http://dx.doi.org/10.1038/nmeth.1330 and will appear in the June 2009 print issue of the journal.

Since their discovery in the past decade, biologically active small RNAs have become the holy grail of much pharmaceutical and genomics research, offering the hope of creating targeted therapeutics to "turn off" or turn down the "volume" of various genes involved in disease, according to Michael McManus, PhD, a UCSF microbiology professor and senior author on the paper. This process is known as RNA interference.

Until now, however, the process of finding shRNAs that are able to potently deactivate a given gene has been extremely laborious and laden with many false results.

The new method uses a microarray technology to generate large numbers of these shRNA strands for each target gene roughly 10 times the volume of traditional methods thereby enabling researchers to screen for RNA interference much faster than before and at a minimal cost, McManus said. "This means that even a small laboratory with limited resources can perform complex genetic screens on mammalian cell cultures," he said. "With the current scarcity of research funding, these are invaluable tools for researchers worldwide."

Many diseases already have been linked to specific genes that are mutated or turned on to cause the illness. How those genes actually cause the illness is less clear, but by using shRNA to turn the genes off, researchers can study specific genetic function and start to identify drugs or therapeutics to change it.

The system, which uses "deep sequencing" technology to rapidly uncover effective shRNAs by simultaneously sequencing millions of base pairs of DNA, also enables scientists to better identify which of those tiny RNA-strands is most effective in turning off a particular gene and which ones are effective but also cause side effects on untargeted genes.

Research into gene function has been done for years with worms and fruit flies, whose short life spans and rapid reproduction make genetic testing relatively inexpensive, McManus said. But in mammals, studying the function of individual genes can often cost a laboratory $100,000 or more in basic materials and require complex technology to run.

The UCSF shRNA library aims to offer more than 600,000 different samples of shRNA roughly 30 for every human gene. Once the shRNA library is complete for the human genome, the team will continue creating libraries for other species.

McManus said he plans to make shRNA libraries available through the UCSF Sandler Lentiviral RNAi Core, which he directs. The Core provides essential equipment, training, supervision, and monitoring for researchers working in lentiviral-based research, as well as offering viral packaging and other services for researchers.


'/>"/>

Contact: Kristen Bole
kbole@pubaff.ucsf.edu
415-476-2557
University of California - San Francisco
Source:Eurekalert

Related medicine news :

1. S.C. BlueCross Creates Corporate Planning Unit, Promotes Davis to Vice President
2. TriWest Creates First-of-its-Kind Partnership to Offer Military Leaders With Grief Support Program
3. Exceptional Childrens Foundation Merger with Kayne Eras Center Creates One of States Most Comprehensive Nonprofits Serving the Disabled
4. Prime Access Creates Groundbreaking Ads Targeting Urban Teens for the White Houses National Youth Anti-Drug Media Campaign
5. L.A. Playwright Creates an Enormous Wave with His New Book, Touch the Ocean
6. Alter+Care Creates the Advisory Board
7. Hollings Cancer Center Creates $1 Million Endowed Chair for Breast Cancer Research and Treatment with Gift from the Spaulding-Paolozzi Foundation
8. Bayer Foundation Grant Creates Graduate Engineering Fellowship at University of Houston
9. Creative Technology Services Creates a New Operating Company Focused on Mobility
10. inVentiv Health Creates Client Development and Integration Team
11. National Heart Lung and Blood Institute creates national network to study cardiovascular disease
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/26/2017)... ... April 26, 2017 , ... Datos Health , developer of ... Med-e-Mass , the largest Electronic Medical Records (EMR) provider in South Africa. ... incentives to a patient’s remote health progress, empowering the patient to take direct responsibility ...
(Date:4/26/2017)... ... ... Infertility may be a result of an underlying pelvic ... become pregnant upon treating their diagnosis. , To properly diagnose patients, ... can provide the necessary information to diagnose and treat your problem. , ...
(Date:4/26/2017)... ... April 26, 2017 , ... Want to learn ... ( CRISPRCas.pioneer.com ) that demonstrates how this advanced plant breeding technology is a ... food, with fewer resources. It highlights the business’ principles, research and collaboration efforts ...
(Date:4/26/2017)... ... April 26, 2017 , ... MYOLYN, a ... announce that it has received 510(k) clearance from the U.S. Food & Drug ... MyoCycle Pro. , Both devices are stationary cycling systems that use MYOLYN’s patent-pending ...
(Date:4/25/2017)... (PRWEB) , ... April 25, 2017 , ... ... they have signed an agreement to be the preferred physical therapy provider for ... and returning them to Derby City CrossFit as quickly and effectively as possible, ...
Breaking Medicine News(10 mins):
(Date:4/19/2017)... , April 19, 2017  Sorrento Therapeutics, Inc. ... clinical-stage biopharmaceutical company developing new treatments for cancer ... closing of its previously announced underwritten public offering ... a public offering price of $2.00 per share, ... offering expenses payable by Sorrento.  The net proceeds ...
(Date:4/19/2017)... Calif. , April 19, 2017  SARES•REGIS ... buildings it is developing at Conejo Spectrum Business ... , to Atara Biotherapeutics, Inc. , a ... severe and life-threatening diseases that have been underserved ... allogeneic T-cell therapies for cancer, autoimmune and infectious ...
(Date:4/18/2017)... -- Research and Markets has announced the addition of ... offering. ... market to grow at a CAGR of 6.35% during the period ... has been prepared based on an in-depth market analysis with inputs ... growth prospects over the coming years. The report also includes a ...
Breaking Medicine Technology: