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Researchers use zebrafish to identify new gene linked to melanoma
Date:4/5/2011

NEW YORK (April 5, 2011) -- Thanks to the zebrafish, there is new hope for people with melanoma, an aggressive skin cancer that is responsible for approximately 8,700 deaths each year in the United States.

In a study that was published in the March 24th issue of the journal Nature, and featured on the cover, researchers identified SETDB1 as a new gene that promotes the growth of melanoma and may play a role in up to 70 percent of malignant melanomas.

"We hope our discovery will ultimately lead to better therapeutic strategies for patients with melanoma," says study co-first author Dr. Yariv J. Houvras, assistant professor of medicine in the Departments of Surgery, Medicine, and Cell and Developmental Biology at Weill Cornell Medical College.

Although melanoma accounts for less than 5 percent of skin cancer cases, it causes a large majority of skin cancer deaths. The American Cancer Society estimates that about 68,000 were diagnosed in the United States last year -- 39,000 in men and 29,000 in women. The incidence of melanoma continues to increase at a rate faster than that of the seven most common cancers; according to the National Cancer Institute, between 1992 and 2004 the melanoma incidence increased 45 percent.

The report in Nature originated in the laboratory of Dr. Leonard Zon, director of the Stem Cell Program at Children's Hospital Boston, where Dr. Houvras worked prior to joining Weill Cornell earlier this year. Dr. Houvras and colleagues created "MiniCoopR," a transposon-based vector to deliver candidate human test genes into a specially engineered strain of zebrafish that harbors a mutated BRAF gene. The researchers screened more than 3,000 zebrafish and found one gene that dramatically accelerated melanoma formation: SETDB1, which encodes a histone methyltransferase enzyme. Fish melanomas with elevated levels of SETDB1 are highly invasive and have a set of deregulated genes that are present in human
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Contact: Andrew Klein
ank2017@med.cornell.edu
212-821-0560
New York- Presbyterian Hospital/Weill Cornell Medical Center/Weill Cornell Medical College
Source:Eurekalert

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