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New screen offers hope for copper deficiency sufferers
Date:8/17/2010

Copper deficiency diseases can be devastating. Symptoms can range from crippling neurological degeneration in Menkes disease a classic copper deficiency disease to brittle bones, anaemia and defective skin pigmentation in gastric bypass patients. Unfortunately, very little is known about how the body uses this essential nutrient. Knowing that melanocytes (the cells that give rise to hair, skin and eye pigmentation) are dramatically affected by the effects of copper deficiency, Elizabeth Patton from the University of Edinburgh, UK, and other colleagues from UK- and US-based labs decided to find out how melanocytes metabolise copper. Patton and her colleagues publish their results in Disease Models and Mechanisms on August 17, 2010 at http://dmm.biologists.org/.

Patton explains that zebrafish are a valuable research tool because they are an intermediate organism between mammals and the simpler creatures that scientists routinely use to study genetic disorders. She usually uses zebrafish to understand how melanocytes develop and how these cells can give rise to malignant melanoma, a lethal form of cancer. Testing compounds that she hoped might prevent malignant melanoma symptoms in zebrafish, she was puzzled to find a compound that caused the fish to lose their characteristic zebra-stripe patterns. After spending months trying to determine why the fish lost their stripes, she crossed paths with Jonathan Gitlin, a copper deficiency specialist from Vanderbilt University, USA, and realised that the stripeless fish might have copper deficiency.

To understand the molecular pathways involved in copper deficiency, Patton and Gitlin teamed up with Mike Tyers from the University of Edinburgh and developed an elegant method to probe copper metabolism in zebrafish. First, the team identified compounds that caused zebrafish to lose their stripes indicating copper deficiency. Next, they identified the genes
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Contact: Sarah Allan
sarah.allan@biologists.com
44-752-876-8387
The Company of Biologists
Source:Eurekalert

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