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细胞技术

Use of siRNA to Study the Function of MDC1 in DNA Damage Responses

2025-03-15 细胞技术 加入收藏
Small interfering RNA (siRNA) technology has emerged as a powerful genetic tool

Small interfering RNA (siRNA) technology has emerged as a powerful genetic tool to investigate gene function in mammalian cells. Here we use siRNA to study a mediator of DNA damage-checkpoint protein 1 (MDC1), previously known as Kiaa0170 or NFBD1, in DNA damage responses. We show that MDC1 siRNA specifically and efficiently down-regulates MDC1 expression, resulting in defective radiation-induced apoptosis in A549 cells. Transfection with siRNA-resistant MDC1 restores radiation-induced apoptosis. These findings suggest that siRNA can be a very useful tool for the exploration of gene function in mammalian checkpoint responses.

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