Featured Research

from universities, journals, and other organizations

Potential therapeutic target for wound-healing, cancer identified

Date:
May 12, 2014
Source:
Jackson Laboratory
Summary:
A protein involved in wound healing and tumor growth (an inactive rhomboid protease, iRhom2) could be a potential therapeutic target, researchers report. In one of nature's mixed blessings, the mechanisms that work to heal cuts and wounds, rebuilding damaged cells, can also go out of control and cause cancer. But understanding those mechanisms could lead to new ways of stimulating healing in wound patients and dialing back cancerous proliferation.

Jackson Laboratory research team led by Professor Lenny Shultz, Ph.D., reports that a protein involved in wound healing and tumor growth could be a potential therapeutic target.

In one of nature's mixed blessings, the mechanisms that work to heal cuts and wounds, rebuilding damaged cells, can also go out of control and cause cancer. But understanding those mechanisms could lead to new ways of stimulating healing in wound patients and dialing back cancerous proliferation.

An inactive rhomboid protease, iRhom2, is normally a short-lived protein that controls a cascade of events involved in wound healing as well as tumor growth. By introducing mutations in Rhbdf2, the gene that encodes the iRhom2 protein, the researchers extended the protein's duration and wound-healing power. And while the altered protein also contributed to the growth of already-present tumors, it did not trigger the spontaneous development of new tumors.

Epidermal growth factor receptor (EGFR) signal transduction plays a major role in growth, proliferation and differentiation of mammalian cells. "In Drosophila," explains Vishnu Hosur, a postdoctoral associate in the Shultz lab, "iRhoms, are cardinal regulators of EGFR signaling. In humans, iRhoms have been implicated in EGFR-mediated keratinocyte proliferation and cancer growth, but the molecular mechanisms underlying these biological functions have not been well defined."

In this study, the researchers used molecular, cell biological, in vivo genetic and bioinformatics approaches to identify the EGFR ligand amphiregulin as a physiological substrate, and demonstrate a role for iRhoms in amphiregulin-EGFR-dependent wound healing. Furthermore, they showed how iRhom mutations that increase EGFR signaling, under the right circumstances, can drive cancer development.

"This study demonstrates the significance of mammalian iRhoms in regulating an EGFR signaling event that promotes accelerated wound healing and triggers tumorigenesis," Shultz says. "It provides a paradigm shift in our understanding of rhomboid enzymes and their emerging role in diverse biological functions. Given their ability to regulate EGFR signaling in parallel with metalloproteases, iRhoms can be potential therapeutic targets in impaired wound healing and cancer."


Story Source:

The above story is based on materials provided by Jackson Laboratory. Note: Materials may be edited for content and length.


Journal Reference:

  1. V. Hosur, K. R. Johnson, L. M. Burzenski, T. M. Stearns, R. S. Maser, L. D. Shultz. Rhbdf2 mutations increase its protein stability and drive EGFR hyperactivation through enhanced secretion of amphiregulin. Proceedings of the National Academy of Sciences, 2014; DOI: 10.1073/pnas.1323908111

Cite This Page:

Jackson Laboratory. "Potential therapeutic target for wound-healing, cancer identified." ScienceDaily. ScienceDaily, 12 May 2014. <www.sciencedaily.com/releases/2014/05/140512155023.htm>.
Jackson Laboratory. (2014, May 12). Potential therapeutic target for wound-healing, cancer identified. ScienceDaily. Retrieved September 22, 2014 from www.sciencedaily.com/releases/2014/05/140512155023.htm
Jackson Laboratory. "Potential therapeutic target for wound-healing, cancer identified." ScienceDaily. www.sciencedaily.com/releases/2014/05/140512155023.htm (accessed September 22, 2014).

Share This



More Health & Medicine News

Monday, September 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Liberia Pleads for Help to Fight Ebola

Liberia Pleads for Help to Fight Ebola

AP (Sep. 22, 2014) Liberia's finance minister is urging the international community to quickly follow through on pledges of cash to battle Ebola. Bodies are piling up in the capital Monrovia as the nation awaits more help. (Sept. 22) Video provided by AP
Powered by NewsLook.com
Ebola Doctor Says Border Controls Critical

Ebola Doctor Says Border Controls Critical

AP (Sep. 22, 2014) A Florida doctor who helped fight the expanding Ebola outbreak in West Africa says the disease can be stopped, but only if nations quickly step up their response and make border control a priority. (Sept. 22) Video provided by AP
Powered by NewsLook.com
Global Ebola Aid Increasing But Critics Say It's Late

Global Ebola Aid Increasing But Critics Say It's Late

Newsy (Sep. 21, 2014) More than 100 tons of medical supplies were sent to West Africa on Saturday, but aid workers say the global response is still sluggish. Video provided by Newsy
Powered by NewsLook.com
Sierra Leone in Lockdown to Control Ebola

Sierra Leone in Lockdown to Control Ebola

AP (Sep. 21, 2014) Sierra Leone residents remained in lockdown on Saturday as part of a massive effort to confine millions of people to their homes in a bid to stem the biggest Ebola outbreak in history. (Sept. 20) 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