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Scientists find a key element of lupus, suggesting better drug targets
Date:2/4/2013

LA JOLLA, CA February 4, 2013 A team led by scientists at The Scripps Research Institute (TSRI) has identified specific cellular events that appear key to lupus, a debilitating autoimmune disease that afflicts tens of millions of people worldwide. The findings suggest that blocking this pathway in lupus-triggering cells could be a potent weapon against the disease.

In the new study, described in an online Early Edition of the Proceedings of the National Academy of Sciences the week of February 4, 2013, the researchers determined that the absence of a certain type of immune cell, or of a key signaling molecule within the cell, greatly reduces the development of autoimmunity in mouse models of lupus. Mice with these protective changes showed little impairment of their normal immune functions.

"We are excited about the potential of such an inhibitor as a new kind of treatment for lupus, as well as other autoimmune conditions," said Argyrios N. Theofilopoulos, chair of TSRI's Department of Immunology and Microbial Science and a senior author of the new study.

A Case of Mistaken Identity

While there are therapies for lupus, also known as systemic lupus erythematosus (SLE), none of these tightly targets its underlying causes. The condition appears to arise from both genetic and environmental factors, and involves complex autoimmune processes. A key feature is the activity of antibodies"autoantibodies"that attack the patient's own nucleic acids (DNA, RNA) and other cellular proteins. Lupus's signs and symptoms include rashes, joint pain, anemia and kidney damage. Untreated complications, such as kidney failure and blood clots, can be fatal. Physicians typically treat lupus with broadly immunosuppressive drugs, which raise patients' risks for some infections and cancers.

Theofilopoulos and his laboratory have long been at the forefront of lupus research. In recent years, they and other researchers have f
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Contact: Mika Ono
mikaono@scripps.edu
858-784-2052
Scripps Research Institute
Source:Eurekalert  

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