Lysophosphatidic acid suppresses apoptosis of high-grade serous ovarian cancer cells by inducing autophagy activity and promotes cell-cycle progression via EGFR-PI3K/Aurora-A(Thr288)-geminin dual signaling pathways.

Lysophosphatidic acid suppresses apoptosis of high-grade serous ovarian cancer cells by inducing autophagy activity and promotes cell-cycle progression via EGFR-PI3K/Aurora-A(Thr288)-geminin dual signaling pathways.
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DOI:
10.3389/fphar.2022.1046269
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发表时间:
2022
影响因子:
5.6
通讯作者:
--
中科院分区:
医学2区
文献类型:
--
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溶血磷脂酸(LPA)和双生蛋白在卵巢癌中过表达,越来越多的证据支持它们对卵巢肿瘤发展的贡献。在这里,我们揭示了双生蛋白耗竭诱导自噬抑制,增强活性氧(ROS)的产生和高级别浆液性卵巢癌(HGSOC)细胞的凋亡。生物信息学分析和药理学抑制研究证实,LPA通过LPAR 1/3/MMPs/EGFR/PI 3 K/mTOR途径激活HGSOC细胞中早期S期的Geminin表达。此外,LPA通过EGFR反式激活使Thr 288上的Aurora-A激酶磷酸化,并且该事件增强了额外的双生蛋白稳定性。反过来,过表达和稳定的双生蛋白调节DNA复制,细胞周期进程,和HGSOC细胞的细胞增殖。我们的数据为提高HGSOC精准医学的临床效益提供了潜在的目标。
Lysophosphatidic acid (LPA) and geminin are overexpressed in ovarian cancer, and increasing evidence supports their contribution to ovarian tumor development. Here, we reveal that geminin depletion induces autophagy suppression and enhances reactive oxygen species (ROS) production and apoptosis of high-grade serous ovarian cancer (HGSOC) cells. Bioinformatics analysis and pharmacological inhibition studies confirm that LPA activates geminin expression in the early S phase in HGSOC cells via the LPAR1/3/MMPs/EGFR/PI3K/mTOR pathway. Furthermore, LPA phosphorylates Aurora-A kinase on Thr288 through EGFR transactivation, and this event potentiates additional geminin stabilization. In turn, overexpressed and stabilized geminin regulates DNA replication, cell-cycle progression, and cell proliferation of HGSOC cells. Our data provide potential targets for enhancing the clinical benefit of HGSOC precision medicine.
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