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The chemotherapeutic agent CPT-11 induces apoptotic cell death in various cells. In the present study we examined the effect of CPT-11 in rat pheochromocytoma PC12 cells. When PC12 cells were treated with CPT-11, two distinct reactions were encountered. A high dose of CPT-11 induced apoptotic cell death mediated by caspase cascade, whereas a low dose of CPT-11 induced irreversible cell morphological...
CPT-11, a derivative of camptothecin (CPT) that interacts with type-I DNA topoisomerase, induced apoptosis in HL60 and Daudi cells in vitro. This cytotoxic activity was time and dose dependent, and was prevented by cycloheximide (CHX), a protein synthesis inhibitor, indicating the requirement of new protein synthesis for CPT-11-induced apoptotic cell death. Ac-Tyr-Val-Ala-Asp-aldehyde (YVAD) and Ac-Asp-Glu-Val-Asp-aldehyde...
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