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CANCER DISCOVERY:研究人员确定了致命肺癌的两个治疗靶点

2019-07-27 海北 MedSci原创

LKB1(STK11)肿瘤抑制因子中的突变是非小细胞肺癌(NSCLC)中第三最常见的遗传改变。 LKB1编码丝氨酸/苏氨酸激酶,其直接磷酸化并激活14种AMPK家族激酶(“AMPKR”)

LKB1(STK11)肿瘤抑制因子中的突变是非小细胞肺癌NSCLC)中第三最常见的遗传改变。 

LKB1编码丝氨酸/苏氨酸激酶,其直接磷酸化并激活14种AMPK家族激酶(“AMPKR”)。至今为止,许多AMPKR的功能仍然模糊不清,而且对LKB1的肿瘤抑制功能最关键的仍然是未知的。

最近,研究人员将AMPKR家族的CRISPR和遗传分析结合在NSCLC细胞系和小鼠模型中,揭示了SIK亚家族令人惊讶的关键作用。

Sik1的条件性遗传损失揭示了Kras依赖性肺癌小鼠模型中肿瘤生长的增加,其通过丧失相关激酶Sik3而进一步增强。

由于SIK的大多数已知底物控制转录,研究人员进行基因表达分析,揭示了LKB1-和SIK1 / 3缺陷肿瘤之间共同的AP-1和IL6信号传导的上调。

SIK的底物CRTC2是这种效果所必需的,也是SIK损失的增殖益处所必须的。


原始出处:

Pablo E Hollstein et al. The AMPK-related kinases SIK1 and SIK3 mediate key tumor suppressive effects of LKB1 in NSCLC. Cancer Discovery, 2019 DOI: 10.1158/2159-8290


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    2019-12-15 yahu
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    2019-07-29 yankaienglish

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