作者: Jia‐ling Chou , Zhen Fan , Tony DeBlasio , Andrew Koff , Neal Rosen
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摘要: Non‐transformed human breast epithelial cell line MCF10A is dependent on exogenous epidermal growth factor (EGF) for continued growth. Complete G1 arrest was rapidly induced following EGF deprivation. The cycle accompanied by increased levels of p27KIP1, a cyclin‐dependent kinase inhibitor, and reduced level cyclin D1. This associated with strong inhibition 2 D1‐associated activities. Introduction D1 into (MCF10ADl) cells resulted in an accelerated rate but did not confer colony‐forming capacity. Cell still achieved MCF10AD1 In the great majority clones, accumulation phase p27KIP1 protein levels. two clones where remained unchanged during arrest, it found that more bound to p27KIP1. data demonstrate ectopic expression alone could transform nor sufficient prevent