Featured Research

from universities, journals, and other organizations

Zebrafish Provide Model For Cancerous Melanoma In Humans

Date:
May 28, 2009
Source:
The Company of Biologists
Summary:
Scientists haved used the zebrafish to gain insight into the influence of known cancer genes on the development and progression of melanoma, an aggressive form of human skin cancer with limited treatment options.

In a new study published in Disease Models & Mechanisms, scientists use the zebrafish to gain insight into the influence of known cancer genes on the development and progression of melanoma, an aggressive form of human skin cancer with limited treatment options.

Inside the cell, signals are delivered that direct the cell on whether to divide, migrate or even die. Cancer often results when the molecules that relay these signals become mutated so that they do not function normally. In cancer, cells divide, grow and migrate when they should not, therefore resulting in an aggressive disease that can spread throughout the body. A key molecule in this signaling pathway is RAS, and mutations in it are known to lead to cancer. In some cases, the type of RAS mutation is a predictor of a patient's response to treatment and their overall prognosis.

Therefore, scientists at the University of Manchester in England and the University Hospital Zόrich in Switzerland generated several zebrafish with changes in RAS or other RAS-regulated proteins to create a useful model that can be used to study and understand human melanoma. Zebrafish are a useful tool to understand human disease because they are small, transparent, and easy to propagate and maintain. Tumors created from the pigmented cells of zebrafish, known as melanocytes, are easy to see against their thin, light colored bodies.

The research team notes that these fish may be a useful experimental tool for human disease. Many of the changes they made caused melanoma in the zebrafish, indicating that zebrafish respond similarly to changes in these signals as do humans. Zebrafish that were born from the original mutant fish displayed abnormal growth of their melanocytes, reminiscent of familial atypical mole and melanoma syndrome (FAMM) seen in humans. By producing other signaling molecules in the mutant fish, the researchers were able to identify a pathway that reduced the effects of RAS mutations on melanoma progression in zebrafish.

The report titled "Dissecting the roles of Raf- and PI3K-signalling pathways in melanoma formation and progression in a zebrafish model" was written by Christina Michailidou, Mary Jones, Paul Walker, Amanda Kelly, and Adam Hurlstone at the University of Manchester and Jivko Kamarashev at University Hospital Zόrich. The study is published in the July/August issue of the new research journal, Disease Models & Mechanisms (DMM), published by The Company of Biologists, a non-profit based in Cambridge, UK.


Story Source:

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


Journal Reference:

  1. Christina Michailidou, Mary Jones, Paul Walker, Jivko Kamarashev, Amanda Kelly, Adam F. L. Hurlstone. Dissecting the roles of Raf- and PI3K-signalling pathways in melanoma formation and progression in a zebrafish model. Disease Models & Mechanisms, 2009; DOI: 10.1242/dmm.001149

Cite This Page:

The Company of Biologists. "Zebrafish Provide Model For Cancerous Melanoma In Humans." ScienceDaily. ScienceDaily, 28 May 2009. <www.sciencedaily.com/releases/2009/05/090526093932.htm>.
The Company of Biologists. (2009, May 28). Zebrafish Provide Model For Cancerous Melanoma In Humans. ScienceDaily. Retrieved August 20, 2014 from www.sciencedaily.com/releases/2009/05/090526093932.htm
The Company of Biologists. "Zebrafish Provide Model For Cancerous Melanoma In Humans." ScienceDaily. www.sciencedaily.com/releases/2009/05/090526093932.htm (accessed August 20, 2014).

Share This




More Health & Medicine News

Wednesday, August 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Possible Ebola Patient in Isolation at California Hospital

Possible Ebola Patient in Isolation at California Hospital

Reuters - US Online Video (Aug. 20, 2014) — A patient who may have been exposed to the Ebola virus is in isolation at the Kaiser Permanente South Sacramento Medical Center. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
Raw: World's Oldest Man Lives in Japan

Raw: World's Oldest Man Lives in Japan

AP (Aug. 20, 2014) — A 111-year-old Japanese was certified as the world's oldest man by Guinness World Records on Wednesday. Sakari Momoi, a native of Fukushima in northern Japan, was given a certificate at a hospital in Tokyo. (Aug. 20) Video provided by AP
Powered by NewsLook.com
Do More Wedding Guests Make A Happier Marriage?

Do More Wedding Guests Make A Happier Marriage?

Newsy (Aug. 20, 2014) — A new study found couples who had at least 150 guests at their weddings were more likely to report being happy in their marriages. Video provided by Newsy
Powered by NewsLook.com
Ebola-Hit Sierra Leone's Freetown a City on Edge

Ebola-Hit Sierra Leone's Freetown a City on Edge

AFP (Aug. 19, 2014) — Residents of Sierra Leone's capital voice their fears as the Ebola virus sweeps through west Africa. Duration: 00:56 Video provided by AFP
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:
from the past week

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