Navigation Links
How sunlight causes skin cells to turn cancerous
Date:1/15/2010

MAYWOOD, Ill. -- Most skin cancers are highly curable, but require surgery that can be painful and scarring.

A new study by Loyola University Health System researchers could lead to alternative treatments that would shrink skin cancer tumors with drugs. The drugs would work by turning on a gene that prevents skin cells from becoming cancerous, said senior author Mitchell Denning, Ph.D.

The study was published Jan. 15, 2010 in the Journal of Biological Chemistry.

More than 1 million people in the United States are diagnosed with skin cancer each year. In the new study, researchers examined a type of skin cancer, called squamous cell carcinoma, that accounts for between 200,000 and 300,000 new cases per year.

Squamous cell carcinoma begins in the upper part of the epidermis, the top layer of the skin. Most cases develop on areas that receive lots of sun, such as the face, ear, neck, lips and backs of hands. There are various surgical treatments, including simple excision, curettage and electrodessication (scraping with a surgical tool and treating with an electric needle) and cryosurgery (freezing with liquid nitrogen). Removing large skin cancers can require skin grafts and be disfiguring.

Sunlight can damage a skin cell's DNA. Normally, a protein called protein kinase C (PKC) is activated in response to the damage. If the damage is too great to repair, the PKC protein directs the cell to die.

Healthy cells grow and divide in a cell-division cycle. At several checkpoints in this cycle, the cell stops to repair damaged DNA before progressing to the next step in the cycle. The new study found that the PKC gene is responsible for stopping the cell at the checkpoint just before the point when the cell divides. In squamous cell carcinoma, the PKC gene is turned off. The cell proceeds to divide without first stopping to repair its DNA, thus producing daughter tumor cells.

Denning said a class of drugs called protein kinase inhibitors potentially could shrink tumors by turning the PKC gene back on. Several such drugs have been approved by the Food and Drug Administration for other cancers. Denning is pursuing grant funding to test such drugs on animal models.


'/>"/>

Contact: Jim Ritter
jritter@lumc.edu
708-216-2445
Loyola University Health System
Source:Eurekalert

Related medicine news :

1. As Sunlight Fades, Look Out for SAD
2. Exposure to sunlight may decrease risk of advanced breast cancer by half
3. A Little Wine, Sunlight Help Boost Womens Health
4. Sunlight Helps Put Lung Cancer in the Shade
5. Sunlight, Vitamin D May Cut Kids Diabetes Risk
6. Sunlight exposure plus low antioxidant levels may place older adults at risk for eye disease
7. BusinessWeek.com Reports an Appearance on Oprah Boosts Sunlight Saunas Infrared Sauna Sales to Record Highs
8. Sunlight May Cause Rash in Autoimmune Disease
9. Sunlight Saunas Celebrates 10 Years of Industry Firsts, and Announces 10th Anniversary Sweepstakes Winner
10. Constipations Many Causes and Cures
11. How adhesive protein causes malaria
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/14/2016)... Laurel, NJ (PRWEB) , ... February 14, 2016 ... ... 14-20, 2016, the American Association of Heart Failure Nurses (AAHFN) is promoting healthier ... caregivers. This year’s campaign, Spices of Life! Healthy Living with Heart Failure will ...
(Date:2/13/2016)... ... February 13, 2016 , ... Many individuals looking to lead a healthy lifestyle ... reasons. IsoPasta by Isolator Fitness has delved into this niche allowing those giving ... high-carb repercussions. IsoPasta has 30 grams of protein and only 7 grams of ...
(Date:2/13/2016)... Salt Lake City, Utah (PRWEB) , ... February 13, 2016 , ... When an ... kids, Host Parents aren’t always sure what they are in for and they are often ... Pairs are more than they were hoping for. This year’s Au Pair of the Year ...
(Date:2/12/2016)... ... February 12, 2016 , ... The law firm of Morrow, Morrow, Ryan & ... purpose of these scholarships is to encourage applicants to pursue a degree in their ... these two parishes. , “We have available jobs in St. Landry and Evangeline ...
(Date:2/12/2016)... (PRWEB) , ... February 12, 2016 , ... Each year, ... will be held in Anaheim, CA at the Anaheim Convention Center. Almost 10,000 physical ... see new therapy products in action, learn more about their chosen field and network ...
Breaking Medicine News(10 mins):
(Date:2/12/2016)... 12 2016  OMS Supply, a large provider of ... announced today the recent launching of their new company ... of features that enhance the user experience and enable ... --> --> Despite ... company that started in early 2016, they have already ...
(Date:2/12/2016)... 12, 2016 Indiso ... den ungedeckten medizinischen Bedarf bei Lungen- und ... klinischen Forschungsprogramms bekannt. Das Programm, das sich ... ihrer respiratorischen Funktionen und anderer klinischer Parameter. ... Medizintechnikunternehmen, das sich auf den ungedeckten medizinischen ...
(Date:2/11/2016)... The primary goal of this research is to analyze ... of liquid biopsy. Key information the survey seeks to ... liquid biopsy adoption amidst future users - Predominantly used ... Sample inflow to conduct liquid biopsy tests - Preference ... on. - Correlation analysis of sample type and biomarker ...
Breaking Medicine Technology: