Screening of G-quadruplex ligands from Macleaya cordata extract by contrast ultrafiltration with liquid chromatography-mass spectrometry and molecular docking / 中国中药杂志
China Journal of Chinese Materia Medica
;
(24): 3908-3914, 2020.
Artículo
en Chino
| WPRIM
| ID: wpr-828368
ABSTRACT
G-quadruplex DNA has become an important target for tumor therapy and anti-tumor development. Modern pharmacology has proved that Macleaya cordata has anti-inflammatory, antibacterial, anti-tumor and other pharmacological effects. Affinity ultrafiltration method can screen active ingredients from compounds rapidly, but G-quadruplex DNA ligands are difficult to dissociate, which is a key step in conventional ultrafiltration method. In this paper, the filtrates after ultrafiltration were determined by HPLC-MS in substitution. The peaks with 20% reduction of MS response from the incubation vs control were considered to be ligand components to G-quadruplex. Two of the peaks with the relative abundance above 30% were identified as sanguinarine(SAN) and chelerine(CHE). Their circular dichroism conformations further proved that SAN and CHE are active ligands of HT4. In addition, another two gradients with high relative abundance were identified as protopine(PRO) and allpcryprotopine(ALL). The binding rate of SAN, CHE, PRO and ALL was calculated according to the HPLC-MS results, and the results showed a consistency with that of the molecular docking method. The proposed method can be used to screen active components from mixture.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Espectrometría de Masas
/
Ultrafiltración
/
Cromatografía Líquida de Alta Presión
/
Cromatografía Liquida
/
G-Cuádruplex
/
Simulación del Acoplamiento Molecular
/
Ligandos
Tipo de estudio:
Estudio diagnóstico
/
Estudio de tamizaje
Idioma:
Chino
Revista:
China Journal of Chinese Materia Medica
Año:
2020
Tipo del documento:
Artículo
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