cyp3a activity

1,3,7-Trimethyluric acid, a purine alkaloid, occurs as a minor metabolite of caffeine in humans. It functions as an antioxidant with the ability to scavenge hydroxyl radicals and offers protective benefits against lipid peroxidation in erythrocyte membranes.

PF-4981517 (CYP3cide) is a efficient, specific and time-dependent inhibitor of cytochrome P4503A4 (CYP3A4). The IC 50 values for CYP3A activity are 0.03 μM,17 μM, and 71 μM for CYP3A4, CYP3A5, and CYP3A7, respectively. PF-4981517 is able to be used to distinguish the contributions of CYP3A4 versus CYP3A5 on drug Metabolism.

Chloroxoquinoline is an anticancer agent that disrupts the DNA template of cancer cells, leading to DNA breaks and cell death. It inhibits cell invasion by downregulating the Rho/Rho kinase signaling pathway. In tumor-bearing mouse models, Chloroxoquinoline enhances the radiosensitivity of Lewis lung carcinoma cells and xenograft tumors. However, its long-term efficacy is reduced in rat models due to self-induction of CYP1A and CYP3A. Chloroxoquinoline exhibits broad-spectrum anticancer activity against non-small cell lung cancer (NSCLC), breast cancer, and gastric cancer.

Schisandrin A, a primary active component extracted from the traditional Eastern medicine Schisandra chinensis, inhibits CYP3A activity, with an IC50 of 6.60 μM and a Ki of 5.83 μM.

1. Dauricine has pulmonary toxicity, can produce pulmonary injury in CD-1 mice by the metabolism of Dauricine mediated by CYP3A. 2. Dauricinec can pass the blood-brain barrier, and that P-glycoprotein has an important role in the transportation of Dauricine across the blood-brain barrier. 3. Dauricine may has anti-tumor effect, can inhibit tumor cells in urinary system and colon cancer cell proliferation, invasion; induce cell apoptosis by suppressing NF-kappaB activity and the expression profile of its downstream genes.

11α-Hydroxy Testosterone, a testosterone metabolite, is synthesized by the cytochrome P450 (CYP) isoform CYP3A.1, and can alternatively be produced from testosterone by a CYP107A1 mutant or from 11α-hydroxy progesterone by the fungus B. bassiana.2,3 The biological activity of 11α-Hydroxy Testosterone remains unclear.

Dauricine (Standard) is a reference standard for research and analysis in studies involving Dauricine. 1. Dauricine has pulmonary toxicity, can produce pulmonary injury in CD-1 mice by the metabolism of Dauricine mediated by CYP3A. 2. Dauricinec can pass the blood-brain barrier, and that P-glycoprotein has an important role in the transportation of Dauricine across the blood-brain barrier. 3. Dauricine may has anti-tumor effect, can inhibit tumor cells in urinary system and colon cancer cell proliferation, invasion; induce cell apoptosis by suppressing NF-kappaB activity and the expression profile of its downstream genes.

6',7'-Dihydroxybergamottin is a potent inhibitor of CYP3A activity, and may be primarily responsible for the effects of grapefruit juice on cytochrome P450 activity in humans.