Research ArticleSystemic Lupus Erythematosus

Defective PTEN regulation contributes to B cell hyperresponsiveness in systemic lupus erythematosus

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Science Translational Medicine  23 Jul 2014:
Vol. 6, Issue 246, pp. 246ra99
DOI: 10.1126/scitranslmed.3009131

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“miR”roring Lupus Control

Decreased expression of the B cell signaling inhibitor PTEN may contribute to lupus pathology. Wu et al. found that microRNA (miR)–mediated regulation of PTEN is altered in patients with the autoimmune disease systemic lupus erythematosus (SLE). Patients with SLE have hyperactivated B cells, which results in the production of autoantibodies. The authors found that decreased expression of PTEN in B cells from SLE patients contributes to this B cell hyperactivation. What’s more, they found that PTEN expression in these cells was regulated by miRs, and that blocking miR-7 could restore PTEN expression and function to that of healthy controls. These data support exploring miR-7 and PTEN as therapeutic targets for SLE.

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