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Fish shed light on human melanoma
Date:6/18/2012

BETHESDA, MD June 15, 2012 A transparent member of the minnow family is providing researchers at Weill Cornell Medical College in New York City with insight into human melanoma a form of skin cancer that may lead to new or repurposed drug treatments, for skin and other cancers.

The experiments will be reported at the "Model Organisms to Human Biology: Cancer Genetics" Meeting, June 17-20, 2012, at the Omni Shoreham Hotel in Washington, D.C., which is sponsored by the Genetics Society of America. The meeting will bring together investigators who study cancer-relevant biology in model organisms such as fruit flies, yeast, fungi, worms, and mice with investigators studying human cancer. Each session includes both speakers from the model organism research community and those focusing on human cancer research.

Each year in the United States, 8,700 people die from malignant melanoma. Yariv Houvras, MD, PhD, at Weill Cornell Medical College and Craig Ceol, PhD, at the University of Massachusetts Medical School, along with their colleagues, discovered that a previously-identified human gene, SETDB1, accelerated the progression of cancer when a copy of the gene was inserted into the zebrafish genome. This led researchers to believe that this gene may have a similar effect in humans. In fish with the human SETDB1 gene, melanomas appear earlier and spread faster, which is easily seen through the transparent skin of the zebrafish.

Zebrafish are valuable models for people. Their generation time is three to four months, and each female lays hundreds of eggs every two to three days. In addition, researchers can easily manipulate its genes, many of which have human counterparts, and they can even see inside the developing embryos because they are transparent.

In the work that will be presented at the meeting on Monday, June 18, the researchers used the fish to probe a part of human chromosome 1 that is involved in melanoma. In h
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Contact: Phyllis Edelman
pedelman@genetics-gsa.org
301-634-7302
Genetics Society of America
Source:Eurekalert

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