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ATF-2在肿瘤发生中的作用 被引量:2

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摘要 激活转录因子-2(activating transcription factor-2,ATF-2)属于碱性亮氨酸拉链bZIP转录因子家族成员,应激刺激下激酶p38/JNK直接磷酸化ATF-2 Thr69和Thr71位点而使ATF-2转录活性被激活,磷酸化的ATF-2形成同二聚体或异二聚体,结合特定DNA序列,调控靶基因表达。ATF-2调控的参与肿瘤发生的靶基因有细胞周期因子D1和A、c-Jun等。在不同类型肿瘤发生中,ATF-2兼具致癌和抑癌的双重功能,除了与不同研究采用的组织/细胞类型相关外,ATF-2的细胞内定位可能是决定其发挥何种作用的关键,ATF-2的细胞内定位能力受蛋白激酶PKCε的调控。
出处 《生理科学进展》 CAS CSCD 北大核心 2012年第6期463-467,共5页 Progress in Physiological Sciences
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