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Ritonavir

利托那韋

Mechanism of action:

Ritonavir 是一種 HIV 蛋白酶抑制劑(HIV protease inhibitor)。HIV 病毒的蛋白酶負責將病毒前驅多蛋白 Gag 與 Gag-Pol 切割為功能性結構蛋白與酵素。Ritonavir 會與蛋白酶的活性位點高親和力結合,競爭性抑制其酵素活性,使形成的病毒顆粒為未成熟且不具感染能力。此外,ritonavir 也能抑制細胞色素 P450 3A4 酶(CYP3A4)、細胞色素 P450 2D6 酶(CYP2D6)、P-醣蛋白(P-glycoprotein),大幅降低藥物的代謝速率,但也會提高藥物交互作用的機率。

​Reference(s):

1. Hull MW et al. (2011). Ritonavir-boosted protease inhibitors in HIV therapy. Ann Med. 


2. Myers RP et al. (2015). An update on the management of chronic hepatitis C: 2015 Consensus guidelines from the Canadian Association for the Study of the Liver. Can J Gastroenterol Hepatol. 


3. Sevrioukova IF et al. (2010). Structure and mechanism of the complex between cytochrome P4503A4 and ritonavir. Proc Natl Acad Sci USA.

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