Publication - 2015Simvastatin prevents and reverses depigmentation in a mouse model of vitiligo

Publication

Simvastatin prevents and reverses depigmentation in a mouse model of vitiligo

We sought to identify new treatments for vitiligo, and first considered repurposed medications because of the availability of safety data and expedited regulatory approval. We previously reported that the IFN-γ-induced chemokine CXCL10 is expressed in lesional skin from vitiligo patients, and that it is critical for the progression and maintenance of depigmentation in our mouse model of vitiligo. We hypothesized that targeting IFN-γ signaling might be an effective new treatment strategy. STAT1 activation is required for IFN-γ signaling and recent studies revealed that simvastatin, an FDA-approved cholesterol-lowering medication, inhibited STAT1 activation in vitro. Therefore, we hypothesized that simvastatin may be an effective treatment for vitiligo. We found that simvastatin both prevented and reversed depigmentation in our mouse model of vitiligo, and reduced the number of infiltrating autoreactive CD8+ T cells in the skin. Treatment of melanocyte-specific, CD8+ T cells in vitro decreased proliferation and IFN-γ production, suggesting additional effects of simvastatin directly on T cells. Based on these data, simvastatin may be a safe, targeted treatment option for patients with vitiligo.

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Agarwal P, Rashighi M, Essien KI, Richmond JM, Randall L, Pazoki-Toroudi H, Hunter CA, Harris JE



FAQOther Questions

  • What causes vitiligo?

    The exact cause is a complex puzzle, but we know the foundation: It is pre-wired in your genes. Think of your genetics as a loaded spring, just waiting for a specific "trigger" ...

  • Can chemicals cause vitiligo?

    Certain chemicals can trigger vitiligo, leading to a condition known as chemical-induced vitiligo. While clinically and histologically indistinguishable from other types of viti...

  • Does vitiligo increase the risk of skin cancer?

    No, it does not. Despite common misconceptions, people with vitiligo are actually at a lower risk of developing skin cancer—including both nonmelanoma skin cancer (NMSC) and mal...