Inhibition of MEIS3 Generates Cetuximab Resistance through c-Met and Akt.

Inhibition of MEIS3 Generates Cetuximab Resistance through c-Met and Akt.
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MEIS3的抑制作用通过C-MET和AKT产生西妥昔单抗的抗性。

DOI:
10.1155/2020/2046248
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发表时间:
2020
影响因子:
--
通讯作者:
Zhu Q
Zhu Q
中科院分区:
生物学3区
文献类型:
--
作者:
Cai P;Xie Y;Dong M;Zhu Q

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尽管西妥昔单抗已广泛用于结肠癌的治疗,但仍有大量患者最终产生耐药性。因此,阐明耐药机制至关重要。 在这项研究中,我们结合计算机分析和单一指导 RNA (sgRNA) 文库来定位西妥昔单抗敏感基因。评估细胞增殖、凋亡和细胞周期以验证西妥昔单抗敏感性的变化。最后,进行蛋白质印迹检测表皮生长因子(EGFR)上游和下游基因的变化。 使用计算机分析和sgRNA文库,确认MEIS3为西妥昔单抗敏感基因。进一步的实验表明MEIS3的表达可以决定西妥昔单抗的水平。同时,MEIS3抑制细胞对间充质上皮转化因子(c-Met)和蛋白激酶B(Akt)抑制剂敏感,这与c-Met磷酸化和Akt降解的变化有关。 MEIS3 通过 c-Met 和 Akt 改变对西妥昔单抗的敏感性。
Although cetuximab has been widely used in the treatment of colon cancer, a large number of patients eventually develop drug resistance. Therefore, it is essential to clarify the mechanism of drug resistance. In this study, we combined in silico analysis and a single guide RNA (sgRNA) library to locate cetuximab-sensitive genes. Cell proliferation, apoptosis, and cell cycle were assessed to validate the change in cetuximab sensitivity. Finally, western blotting was performed to detect changes in epidermal growth factor (EGFR) upstream and downstream genes. Using in silico analysis and the sgRNA library, MEIS3 was confirmed as the cetuximab-sensitive gene. Further experiments indicated that the expression of MEIS3 could determine the level of cetuximab. Meanwhile, MEIS3-inhibited cells were sensitive to mesenchymal epithelial transition factor (c-Met) and protein kinase B (Akt) inhibitors, which is related to the change in phosphorylation of c-Met and degradation of Akt. MEIS3 modified the sensitivity to cetuximab through c-Met and Akt.
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