Interaction and mechanism between poinicidin and BSA / 中国中药杂志
China Journal of Chinese Materia Medica
; (24): 1777-1781, 2017.
Article
en Zh
| WPRIM
| ID: wpr-256097
Biblioteca responsable:
WPRO
ABSTRACT
To establish a sensitive and specific LC-MS/MS method for determination of the binding conditions of ponicidin with bovine serum albumin (BSA) and analysis of its mechanism. The protein binding rates and related binding constants of ponicidin in BSA samples were determined by ultrafiltration and LC-MS/MS. Scatchard equation was used to calculate the binding constant (Ka) of ponicidin in BSA samples as well as the number of binding sites (n), and the mechanism on ponicidin binding with BSA was explored. The results showed that the average protein binding rate of ponicidin with BSA was 57.2%, mainly as grade Ⅰ intensive binding, and the relevant binding constant was 2.54×104 L•μg⁻¹, with a binding site number of n=0.75. The binding of ponicidin with BSA had no concentration dependence within the investigated concentrations. The established method in this study showed high sensitivity, specificity, simple operation and met the analysis requirements, and the calculation of binding constant laid foundation for the clinical drug interactions and pharmacokinetics research.
Texto completo:
1
Índice:
WPRIM
Idioma:
Zh
Revista:
China Journal of Chinese Materia Medica
Año:
2017
Tipo del documento:
Article