1. Anti-inflammatory Properties of the Alpha-Melanocyte-Stimulating Hormone in Models of Granulomatous Inflammation
- Author
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Abdolrazagh Hashemi, Shahraki, Runxia, Tian, Chongxu, Zhang, Nevis L, Fregien, Pablo, Bejarano, and Mehdi, Mirsaeidi
- Subjects
Inflammation ,Pulmonary and Respiratory Medicine ,Mice ,Granuloma ,Sarcoidosis ,Sarcoidosis, Pulmonary ,alpha-MSH ,Anti-Inflammatory Agents ,Animals - Abstract
PurposeAlpha-melanocyte stimulating hormone (α-MSH) is known to have anti-inflammatory effects. However, the anti-inflammatory properties of α-MSH on normal bronchial epithelial cells are largely unknown, especially in the context of in vitro sarcoidosis models.MethodsWe evaluated the anti-inflammatory effects of α-MSH on two different in vitro sarcoidosis models (lung-on-membrane model; LOMM and three-dimensional biochip pulmonary sarcoidosis model; 3D-BSGM) generated from NBECs and an in vivo sarcoidosis mouse model.ResultsTreatment with α-MSH decreased inflammatory cytokine levels and downregulated type I interferon pathway genes and related proteins in LOMM and 3D-BSGM models. Treatment with α-MSH also significantly decreased macrophages and cytotoxic T-cells counts in a sarcoidosis mice model.ConclusionOur results confirm the direct role of type I IFNs in the pathogenesis of sarcoid lung granulomas and highlight α-MSH as a potential novel therapeutic agent for treating pulmonary sarcoidosis.Graphical Abstract
- Published
- 2022
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