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Etanercept
依那西普
Mechanism of action:
Etanercept 是一種腫瘤壞死因子抑制劑(tumor necrosis factor inhibitor),為可溶性腫瘤壞死因子受體融合蛋白(soluble TNF receptor-Fc fusion protein)。Etanercept 由人類腫瘤壞死因子(tumor necrosis factor,TNF)受體 p75(TNFR2)的胞外結構域與抗體 IgG1 的 Fc 片段融合而成。可高親和力結合 TNF-α 與 TNF-β(lymphotoxin-α),阻止 TNF 與細胞表面 TNF 受體結合。這能抑制下游發炎訊號傳導,使發炎性細胞激素(如 IL-1、IL-6)、趨化因子的誘導與釋放相關路徑受到抑制。
Reference(s):
1. Hofmann HP et al. (2016). Characterization and non-clinical assessment of the proposed etanercept biosimilar GP2015 with originator etanercept (Enbrel®). Expert Opin Biol Ther.
2. Zhou SY et al. (2011). Integrated population pharmacokinetics of etanercept in healthy subjects and in patients with rheumatoid arthritis and ankylosing spondylitis. J Clin Pharmacol.
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