RESUMO
The aminobenzamide is selective to class I histone deacetylases (HDACs) and displays unique tight-binding/slow-off HDAC-binding mechanism. Herein, we report a series of 9-substituted purine aminobenzamides that selectively inhibit class I HDACs. The activities in vitro showed compound 9d exhibited 12 folds more potent than MS-275 against HDAC1 isoform and showed excellent inhibitory activity on cancer cells, including HCT-116, MDA-MB-231, K562 cell lines. The metabolic stability of 9d was much better than that of the well-known HDAC inhibitor SAHA. Pulse exposure test of western blot assay demonstrated that 9a, 9d induced histone acetylation in a similar manner to MS-275. Further biological validation demonstrated that 9d prevented cell transition from G1 phase to S phase by reducing Cyclin D1, CDK2 and lifting p21, induced early apoptosis by upregulating BAX and downregulating Bcl-2 in HCT-116 cells.
Assuntos
Antineoplásicos/farmacologia , Benzamidas/farmacologia , Inibidores de Histona Desacetilases/farmacologia , Histona Desacetilases/metabolismo , Purinas/farmacologia , Antineoplásicos/síntese química , Antineoplásicos/química , Benzamidas/síntese química , Benzamidas/química , Linhagem Celular Tumoral , Proliferação de Células/efeitos dos fármacos , Sobrevivência Celular/efeitos dos fármacos , Relação Dose-Resposta a Droga , Ensaios de Seleção de Medicamentos Antitumorais , Inibidores de Histona Desacetilases/síntese química , Inibidores de Histona Desacetilases/química , Humanos , Simulação de Acoplamento Molecular , Estrutura Molecular , Purinas/química , Relação Estrutura-AtividadeRESUMO
OBJECTIVE: To establish analysis methods for fingerprint of Kanggongyan series by HPLC. METHODS: A Shiseido CAP-CELL PAK C18(250 mm x 4. 6 mm, 3 µm) column was used with acetonitrile-0. 5% phosphoric acid as the mobile phase by gradient elution. The flow rate was 0. 8 mL/min, the column temperature was 30 °C, and the detection wavelength was set at 280 nm during 0 ~ 44 min and at 332 nm during 44 ~ 115 min. RESULTS: Ten common peaks were selected as characteristic peaks in the chromatogram of Kanggongyan particles, eleven common peaks were selected as characteristic peaks in the chromatogram of Kanggongyan tablets and capsules ,the similarities were greater than 0. 9 among all batches. CONCLUSION: The method is simple, steady and repeatable. It provides a basis for the quality control of Kanggongyan series.
Assuntos
Cromatografia Líquida de Alta Pressão , Medicamentos de Ervas Chinesas/química , Cápsulas , Controle de Qualidade , ComprimidosRESUMO
A series of novel benzyloxyurea derivatives was designed, synthesized by substituting different benzyls or phenyls on N,N'-positions of the hydroxyurea (HU). These target compounds were evaluated for their anticancer activity in vitro against human leukemia cell line K562 and murine leukemia cell line L1210 in comparison with HU by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Some of the compounds showed promising anticancer activity against the cells. Molecular docking experiments with Saccharomyces cerevisiae R1 domain indicated that 4a and 4f' have stronger affinity than 4m and 4n. Flow cytometry study showed that compound 4g exerted greater apoptotic activity against K562 cells line than HU.
