Featured Research

from universities, journals, and other organizations

Enzyme offers new therapeutic target for cancer drugs

Date:
June 21, 2012
Source:
University of California - San Diego
Summary:
Researchers have uncovered a new signal transduction pathway specifically devoted to the regulation of alternative RNA splicing, a process that allows a single gene to produce or code multiple types of protein variants. The discovery suggests the new pathway might be a fruitful target for new cancer drugs.

Researchers at the University of California, San Diego School of Medicine have uncovered a new signal transduction pathway specifically devoted to the regulation of alternative RNA splicing, a process that allows a single gene to produce or code multiple types of protein variants. The discovery, published in the June 27, 2012 issue of Molecular Cell, suggests the new pathway might be a fruitful target for new cancer drugs.

Related Articles


Signal transduction in the cell involves kinases and phosphatases, enzymes that transfer or remove phosphates in protein molecules in a cascade or pathway. SRPK kinases, first described by Xiang-Dong Fu, PhD, professor of cellular and molecular medicine at UC San Diego in 1994, are involved in controlling the activities of splicing regulators in mammalian cells.

Prior studies have implicated SRPK1 in cancer and other human diseases. For example, it has been shown that SRPK1 plays a critical role in regulating the function of Vascular Endothelial Growth Factor or VEGF, which stimulates blood vessel growth in cancer. SRPK1 has been found to be dysregulated in a number of cancers, from kidney and breast to lung and pancreatic.

Conversely, studies suggest the absence of SRPK1 may be problematic as well, at least in terms of controlling some specific cancer phenotypes. Reduced SRPK1, for example, has been linked to drug resistance, a major problem in chemotherapy of cancer.

In their new paper, Fu and colleagues place SRPK1 in a major signal transduction pathway in the cell. "The kinase sits right in the middle of the PI3K-Akt pathway to specifically relay the growth signal to regulate alternative splicing in the nucleus," said Fu. "It's a new signaling branch that has previously escaped detection."

As such, the SRPK offers a new target for disease intervention and treatment, researchers say. "It's a good target because of its central role and because it can be manipulated with compounds that suppress its activity, which appears quite effective in suppressing blood vessel formation in cancer," Fu said.


Story Source:

The above story is based on materials provided by University of California - San Diego. Note: Materials may be edited for content and length.


Journal Reference:

  1. Zhihong Zhou, Jinsong Qiu, Wen Liu, Yu Zhou, Ryan M. Plocinik, Hairi Li, Qidong Hu, Gourisanker Ghosh, Joseph A. Adams, Michael G. Rosenfeld et al. The Akt-SRPK-SR Axis Constitutes a Major Pathway in Transducing EGF Signaling to Regulate Alternative Splicing in the Nucleus. Molecular Cell, 21 June 2012 DOI: 10.1016/j.molcel.2012.05.014

Cite This Page:

University of California - San Diego. "Enzyme offers new therapeutic target for cancer drugs." ScienceDaily. ScienceDaily, 21 June 2012. <www.sciencedaily.com/releases/2012/06/120621130647.htm>.
University of California - San Diego. (2012, June 21). Enzyme offers new therapeutic target for cancer drugs. ScienceDaily. Retrieved December 19, 2014 from www.sciencedaily.com/releases/2012/06/120621130647.htm
University of California - San Diego. "Enzyme offers new therapeutic target for cancer drugs." ScienceDaily. www.sciencedaily.com/releases/2012/06/120621130647.htm (accessed December 19, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Friday, December 19, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

The Best Tips to Curb Holiday Carbs

The Best Tips to Curb Holiday Carbs

Buzz60 (Dec. 19, 2014) It's hard to resist those delicious but fattening carbs we all crave during the winter months, but there are some ways to stay satisfied without consuming the extra calories. Vanessa Freeman (@VanessaFreeTV) has the details. Video provided by Buzz60
Powered by NewsLook.com
Sierra Leone Bikers Spread the Message to Fight Ebola

Sierra Leone Bikers Spread the Message to Fight Ebola

AFP (Dec. 19, 2014) More than 100 motorcyclists hit the road to spread awareness messages about Ebola. Nearly 7,000 people have now died from the virus, almost all of them in west Africa, according to the World Health Organization. Video provided by AFP
Powered by NewsLook.com
Researchers Test Colombian Village With High Alzheimer's Rates

Researchers Test Colombian Village With High Alzheimer's Rates

AFP (Dec. 19, 2014) In Yarumal, a village in N. Colombia, Alzheimer's has ravaged a disproportionately large number of families. A genetic "curse" that may pave the way for research on how to treat the disease that claims a new victim every four seconds. Duration: 02:42 Video provided by AFP
Powered by NewsLook.com
Kids Die While Under Protective Services

Kids Die While Under Protective Services

AP (Dec. 18, 2014) As part of a six-month investigation of child maltreatment deaths, the AP found that hundreds of deaths from horrific abuse and neglect could have been prevented. AP's Haven Daley reports. (Dec. 18) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins