Total proteins were extracted from SM, resolved on SDS-PAGE gels and transferred to nitrocellulose membranes in a semi-dry Trans-Blot device (Bio-Rad, Madrid, Spain) as described (24 (link), 28 (link)). The following primary antibodies were applied overnight at 4°C: anti-human COX-2 (Santa Cruz Biotechnology, Dallas TX, USA), anti-rabbit IL-6, anti-rabbit TNF, anti-rabbit IL-10, anti-rabbit TGF-β (all from Cloud-Clone Corp; 1/250 dilution); anti-human NLRP3 (AdipoGen, Liestal, Switzerland; 1/1000 dilution); anti-human Caspase-1 (Thermo Fisher Scientific, IL, USA; 1/500 dilution), anti-rabbit IL-18 and IL-1β antibodies (Cloud-Clone Corp, Houston TX, USA; 1/250 dilution). Protein loading control was performed employing EZBlue gel staining reagent (Sigma-Aldrich (11 (link), 24 (link)).
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