Effect of tubeimoside I on the activity of cytochrome P450 enzymes in human liver microsomes.
Xenobiotica
; 54(2): 57-63, 2024 Feb.
Article
in En
| MEDLINE
| ID: mdl-38166553
ABSTRACT
This study assessed the effect of tubeimoside I on CYP1A2, 2A6, 2C8, 2C9, 2C19, 2D6, 2E1, and 3A4 to reveal the potential of tubeimoside I to induce drug-drug interaction.The evaluation of cytochromes P450 enzyme (CYP) activity was performed in pooled human liver microsomes with probing substrates of CYP1A2, 2A6, 2C8, 2C9, 2C19, 2D6, 2E1, and 3A4. Typical inhibitors were employed as positive controls and the effect of 0, 2.5, 5, 10, 25, 50, and 100 µM tubeimoside I was investigated.The activity of CYP2D6, 2E1, and 3A4 was significantly inhibited by tubeimoside I with the IC50 values of 10.34, 11.58, and 9.74 µM, respectively. The inhibition of CYP2D6 and 2E1 was competitive with the Ki value of 5.66 and 5.29 µM, respectively. While the inhibition of CYP3A4 was non-competitive with the Ki value of 4.87 µM. Moreover, the inhibition of CYP3A4 was time-dependent with the KI and Kinact values of 0.635 µM-1 and 0.0373 min-1, respectively.Tubeimoside I served as a competitive inhibitor of CYP2D6 and 2E1 exerting weak inhibition and a non-competitive inhibitor of CYP3A4 exerting moderate inhibition.
Key words
Full text:
1
Database:
MEDLINE
Main subject:
Saponins
/
Triterpenes
/
Microsomes, Liver
/
Cytochrome P-450 CYP1A2
Limits:
Humans
Language:
En
Journal:
Xenobiotica
Year:
2024
Type:
Article
Affiliation country:
China