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[PMID]: | 25521557 |
[Au] Autor: | Dong XZ; Xie TT; Zhou XJ; Mu LH; Zheng XL; Guo DH; Liu P; Ge XY |
[Ad] Endereço: | Departments of aClinical Pharmacology bPharmaceutical Care, Chinese PLA General Hospital, Beijing cCollege of Pharmacy, Tianjin University of Traditional Chinese Medicine, Tianjin dCollege of Pharmacy, Bengbu Medical College, Bengbu, China. |
[Ti] Título: | AG4, a compound isolated from Radix Ardisiae Gigantifoliae, induces apoptosis in human nasopharyngeal cancer CNE cells through intrinsic and extrinsic apoptosis pathways. |
[So] Source: | Anticancer Drugs;26(3):331-42, 2015 Mar. | [Is] ISSN: | 1473-5741 |
[Cp] País de publicação: | England |
[La] Idioma: | eng |
[Ab] Resumo: | 3ß-O-{α-L-Pyran rhamnose-(1→3)-[ß-D-xylopyranose-(1→2)]-ß-D-glucopyranose-(1→4)-[ß-D-lucopyranose-(1→2)]-α-L-pyran arabinose}-cyclamiretin A (AG4) is a saponin component obtained from the Giantleaf Ardisia Rhizome (Rhizoma Ardisiae Gigantifoliae). The present study aimed to investigate the antitumor potential of AG4 and its possible mechanisms in human nasopharyngeal carcinoma cells (CNE). We exposed tumor cells to AG4 to investigate which cell line was the most sensitive to AG4. Cell viability was assessed using the MTT reduction assay, and the effects of AG4 on apoptosis, reactive oxygen species (ROS) content, mitochondrial membrane potential (MMP), and cell cycle were detected using a flow cytometer; the glutathione, superoxide dismutase and malondialdehyde activities were measured using colorimetric methods. The relative expressions of Bax, Bad, Bid, Bcl-2, and Fas mRNA were calculated using the (Equation is included in full-text article.)comparative method by real-time PCR studies and protein was detected by western blotting. AG4 markedly inhibited the growth of CNE cells by decreasing cell proliferation, inducing apoptosis, and blocking the cell cycle in the S phase. The release of caspase-3, caspase-8, and caspase-9 was stimulated by AG4 in CNE, and the decreased proliferation induced by AG4 was blocked by the inhibitor of pan caspase (Z-VAD-FMK). Moreover, the MMP was decreased in AG4-treated cells, and AG4-induced cell apoptosis was accompanied by a rapid and lasting increase in ROS, which was abolished by N-acetyl-L-cysteine (NAC); glutathione, superoxide dismutase, and malondialdehyde were regulated by AG4. AG4 inhibited Bcl-2 mRNA and protein expression and stimulated Bax, Bad, Bid, Fas mRNA, and protein expression in CNE cultures, suggesting an effect at the transcriptional and protein level. In addition, both the FasL inhibitor (AF-016) and the Bcl-2 family inhibitor (GX15-070) could prevent the cell apoptosis induced by AG4. The findings suggested that AG4-induced apoptosis in CNE cells involved a death receptor pathway and a Bcl-2 family-mediated mitochondrial signaling pathway by decreasing the MMPs in an ROS-dependent manner and regulating genes and proteins relative to apoptosis; also, regulation of cell cycles may also play a role in the antitumor mechanism of AG4. |
[Mh] Termos MeSH primário: |
Antineoplásicos Fitogênicos/farmacologia Apoptose/efeitos dos fármacos Ardisia/química Neoplasias Nasofaríngeas/tratamento farmacológico Saponinas/farmacologia
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[Mh] Termos MeSH secundário: |
Antineoplásicos Fitogênicos/isolamento & purificação Carcinoma Caspase 3/metabolismo Caspase 8/metabolismo Caspase 9/metabolismo Ciclo Celular/efeitos dos fármacos Linhagem Celular Tumoral/efeitos dos fármacos Proliferação Celular/efeitos dos fármacos Ensaios de Seleção de Medicamentos Antitumorais Regulação Neoplásica da Expressão Gênica/efeitos dos fármacos Seres Humanos Potencial da Membrana Mitocondrial/efeitos dos fármacos Neoplasias Nasofaríngeas/metabolismo Neoplasias Nasofaríngeas/patologia Espécies Reativas de Oxigênio/metabolismo Saponinas/isolamento & purificação
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[Pt] Tipo de publicação: | JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T |
[Nm] Nome de substância:
| 0 (3-O-(pyran rhamnose-(1-3)-(xylopyranose-(1-2))-glucopyranose-(1-4)-(lucopyranose-(1-2))-pyran arabinose)cyclamiretin A); 0 (Antineoplastic Agents, Phytogenic); 0 (Reactive Oxygen Species); 0 (Saponins); EC 3.4.22.- (Caspase 3); EC 3.4.22.- (Caspase 8); EC 3.4.22.- (Caspase 9) |
[Em] Mês de entrada: | 1511 |
[Cu] Atualização por classe: | 171116 |
[Lr] Data última revisão:
| 171116 |
[Sb] Subgrupo de revista: | IM |
[Da] Data de entrada para processamento: | 141219 |
[St] Status: | MEDLINE |
[do] DOI: | 10.1097/CAD.0000000000000193 |
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