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:6/26/2016)... (PRWEB) , ... June 26, 2016 , ... On June ... sponsor of the 2016 Cereal Festival and World’s Longest Breakfast Table in Battle Creek, ... of the city’s history as home to some of the world’s leading providers of ...
(Date:6/25/2016)... ... 25, 2016 , ... Experts from the American Institutes for ... Meeting June 26-28, 2016, at the Hynes Convention Center in Boston. , AIR ... care planning, healthcare costs and patient and family engagement. , AIR researchers will ...
(Date:6/25/2016)... ... June 25, 2016 , ... As a lifelong Southern Californian, Dr. ... his M.D from the David Geffen School of Medicine at UCLA. He trained in ... to complete his fellowship in hematology/oncology at the UCLA-Olive View-Cedars Sinai program where he ...
(Date:6/24/2016)... ... 2016 , ... Those who have experienced traumatic events may suffer from a ... such as drug or alcohol abuse, as a coping mechanism. To avoid this pain ... following a traumatic event. , Trauma sufferers tend to feel a range of emotions, ...
(Date:6/24/2016)... ... June 24, 2016 , ... Dr. Amanda Cheng, an ... Cheng has extensive experience with all areas of orthodontics, including robotic Suresmile technology, ... , Micro-osteoperforation is a revolutionary adjunct to orthodontic treatment. It can be ...
Breaking Medicine News(10 mins):
(Date:6/26/2016)... , June 27, 2016  VMS Rehab Systems, Inc. ... will take whatever measures required to build a strong ... which is currently listed on the OTC Markets-pink current ... Chairman and CEO, "We are seeing an anomaly in ... understand, not only by the Company, but shareholders and ...
(Date:6/24/2016)... 24, 2016   Bay Area Lyme Foundation ... Dean Center for Tick Borne Illness , Harvard ... MIT Hacking Medicine, University of California, Berkeley, and ... the five finalists of Lyme Innovation , ... than 100 scientists, clinicians, researchers, entrepreneurs, and investors ...
(Date:6/24/2016)... and SAN CLEMENTE, Calif. , June 24, 2016 ... mobile pulmonary function testing company, is now able to perform sophisticated ... by ndd Medical Technologies , Inc. Patients ... hospital-based labs.  Thanks to ndd,s EasyOne PRO ® , ARL patients ... get any needed testing done in the comfort of her own ...
Breaking Medicine Technology: