Aurocyanide (Gold(I) potassium cyanide) was purchased from Alfa Aesar (Ward Hill, MA, USA). l-thio-3-D-glucopyranosato-(triethylphosphine) gold(I) (M1) was synthesized from chloro(triethylphosphine) gold(I) and the thiosugar. Other proposed metabolites of auranofin (M2-M6) were obtained from Sigma (St. Louis, MO, USA). Recombinant human transforming growth factor-β1 (TGF-β1) was supplied by PeproTech (Cranbury, NJ, USA). TAA, lipopolysaccharide (LPS), and adenosine triphosphate (ATP) were purchased from Sigma (St. Louis, MO, USA).