FOXO3a-driven miRNA signatures suppresses VEGF-A/NRP1 signaling and breast cancer metastasis.

FOXO3a-driven miRNA signatures suppresses VEGF-A/NRP1 signaling and breast cancer metastasis.
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FOXO3a 驱动的 miRNA 特征可抑制 VEGF-A/NRP1 信号传导和乳腺癌转移。

DOI:
10.1038/s41388-020-01562-y
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发表时间:
2021-01
期刊:
影响因子:
8
通讯作者:
Liu H
Liu H
中科院分区:
医学1区
文献类型:
--
作者:
Song Y;Zeng S;Zheng G;Chen D;Li P;Yang M;Luo K;Yin J;Gu Y;Zhang Z;Jia X;Qiu N;He Z;Li H;Liu H

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转移仍然是提高乳腺癌患者生存率的主要障碍。乳腺癌中FOXO3a转录因子的下调与转移的发生有因果关系,但机制尚不清楚。在这里,我们报道FOXO3a在功能上与VEGF-A/NRP1信号的抑制以及随之而来的乳腺癌转移的抑制有关。我们发现FOXO3a直接诱导miR-29b-2和miR-338的表达。异位表达miR-29b-2/miR-338显著抑制乳腺癌的EMT、迁移/侵袭和体内转移。此外,我们证明了miR-29b-2直接靶向VEGF-A,而miR-338直接靶向NRP1,并表明miR-29b-2和miR-338调节FOXO3a抑制VEGF-A/NRP1信号传导和乳腺癌转移的能力。临床上,我们的研究结果表明FOXO3a-miR-29b-2/miR-338-VEGF-A/NRP1轴失调,在乳腺癌的疾病进展中起关键作用。总之,我们的研究结果表明FOXO3a在乳腺癌中具有转移抑制作用,并定义了FOXO3a- mirna - vegf - a /NRP1的新信号轴,这可能是乳腺癌的潜在治疗靶点。
Metastasis remains the major obstacle to improved survival for breast cancer patients. Downregulation of FOXO3a transcription factor in breast cancer is causally associated with the development of metastasis through poorly understood mechanisms. Here, we report that FOXO3a is functionally related to the inhibition of VEGF-A/NRP1 signaling and to the consequent suppression of breast cancer metastasis. We show that FOXO3a directly induces miR-29b-2 and miR-338 expression. Ectopic expression of miR-29b-2/miR-338 significantly suppresses EMT, migration/invasion, and in vivo metastasis of breast cancer. Moreover, we demonstrate that miR-29b-2 directly targets VEGF-A while miR-338 directly targets NRP1, and show that regulation of miR-29b-2 and miR-338 mediates the ability of FOXO3a to suppress VEGF-A/NRP1 signaling and breast cancer metastasis. Clinically, our results show that the FOXO3a-miR-29b-2/miR-338-VEGF-A/NRP1 axis is dysregulated and plays a critical role in disease progression in breast cancer. Collectively, our findings propose that FOXO3a functions as a metastasis suppressor, and define a novel signaling axis of FOXO3a-miRNA-VEGF-A/NRP1 in breast cancer, which might be potential therapeutic targets for breast cancer.
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