25hydroxycholesterol

25-Hydroxycholesterol 是胆固醇的代谢产物，由巨噬细胞响应 Toll 样受体激活而分泌。它有效抑制 B 细胞产生 IgA，EC50约为 65 nM。

7-Keto-25-hydroxy Cholesterol, an oxysterol and proposed metabolite of 7-keto cholesterol and 7-dehydro cholesterol, binds to and activates Smoothened (Smo) at the conserved extracellular cysteine-rich domain (CRD) in a reporter assay. Additionally, it enhances the number of EGF high affinity binding sites in normal rat kidney (NRK) cells.