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Effects of FTY720 on BXSB lupus-prone mice: a preliminary study

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Abstract Aim: 

To examine the effects of a novel immunosuppressant, FTY720, on BXSB lupus-prone mice, and to investigate its immune regulatory pathway by using a cDNA microarray. Methods: 

Male BXSB mice received oral administration of 10 mg/kg FTY720 twice a week from age 9 weeks. Levels of antinuclear antibodies in serum and histopathology of the kidney were evaluated. The gene expression profile of splenic lymphocyte was analysed by cDNA microarray. Results: 

FTY720 suppressed the production of antinuclear antibodies (P < 0.05) and reduced the deposition of IgG in glomeruli, compared to control animals. The microarray determined 247 differential expressed genes, which contained a cluster of genes related to lymphocyte trafficking and cytoskeletal remodeling. Conclusion: 

Our preliminary data suggests FTY720 has some immune suppressive effect on BXSB mice. The mechanism may be due to accelerate lymphocyte homing and redistribution which differs from traditional cytotoxic agents. Its clinical implication deserves further study.
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Keywords: FTY720; systemic lupus erythematosus

Document Type: Research Article

Affiliations: 1: Shanghai Clinical Center of Rheumatic Diseases & Institute of Rheumatology, Department of Rheumatology, Renji Hospital, Medicine College of Shanghai Jiao Tong University, Shanghai, China, 2: Sino-Nippon Renal Transplantation Center, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China, 3: Department of Urology, Graduate School of Medicine, Osaka University, Osaka, Japan, 4: Division of Immunology, Peking University, Beijing, PR China

Publication date: 01 September 2007

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