RT Journal Article T1 The cannabinoid quinol VCE-004.8 alleviates bleomycin-induced scleroderma and exerts potent antifibrotic effects through peroxisome proliferator-activated receptor-γ and CB2 pathways. A1 del Rio, Carmen A1 Navarrete, Carmen A1 Collado, Juan A A1 Bellido, M Luz A1 Gomez-Cañas, Maria A1 Pazos, M Ruth A1 Fernandez-Ruiz, Javier A1 Pollastro, Federica A1 Appendino, Giovanni A1 Calzado, Marco A A1 Cantarero, Irene A1 Muñoz, Eduardo K1 Mice K1 NIH 3T3 Cells K1 PPAR gamma K1 Receptor, Cannabinoid, CB2 K1 Scleroderma, Localized K1 Signal Transduction AB Scleroderma is a group of rare diseases associated with early and transient inflammation and vascular injury, followed by fibrosis affecting the skin and multiple internal organs. Fibroblast activation is the hallmark of scleroderma, and disrupting the intracellular TGFβ signaling may provide a novel approach to controlling fibrosis. Because of its potential role in modulating inflammatory and fibrotic responses, both PPARγ and CB2 receptors represent attractive targets for the development of cannabinoid-based therapies. We have developed a non-thiophilic and chemically stable derivative of the CBD quinol (VCE-004.8) that behaves as a dual agonist of PPARγ and CB2 receptors, VCE-004.8 inhibited TGFβ-induced Col1A2 gene transcription and collagen synthesis. Moreover, VCE-004.8 inhibited TGFβ-mediated myofibroblast differentiation and impaired wound-healing activity. The anti-fibrotic efficacy in vivo was investigated in a murine model of dermal fibrosis induced by bleomycin. VCE-004.8 reduced dermal thickness, blood vessels collagen accumulation and prevented mast cell degranulation and macrophage infiltration in the skin. These effects were impaired by the PPARγ antagonist T0070907 and the CB2 antagonist AM630. In addition, VCE-004.8 downregulated the expression of several key genes associated with fibrosis, qualifying this semi-synthetic cannabinoid as a novel compound for the management of scleroderma and, potentially, other fibrotic diseases. PB Nature Publishing Group YR 2016 FD 2016-01-29 LK http://hdl.handle.net/10668/9845 UL http://hdl.handle.net/10668/9845 LA en NO del Río C, Navarrete C, Collado JA, Bellido ML, Gómez-Cañas M, Pazos MR, et al. The cannabinoid quinol VCE-004.8 alleviates bleomycin-induced scleroderma and exerts potent antifibrotic effects through peroxisome proliferator-activated receptor-γ and CB2 pathways. Sci Rep. 2016 Feb 18;6:21703 NO This work was supported by the MINECO grants RTC-2014-1877-1 and SAF2014-53763-P. We acknowledge Carmen Cabrero-Doncel for her assistance with the article. HEK-293T-CB2 cells were kindly provided by Prof.Akos Heinemann (Institute of Experimental and Clinical Pharmacology, Graz, Austria). DS RISalud RD Apr 9, 2025