lnc003875/miR-363/EGR1 regulatory network in the carcinoma -associated fibroblasts controls the angiogenesis of human placental site trophoblastic tumor (PSTT).

lnc003875/miR-363/EGR1 regulatory network in the carcinoma -associated fibroblasts controls the angiogenesis of human placental site trophoblastic tumor (PSTT).
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癌症相关成纤维细胞中的 lnc003875/miR-363/EGR1 调控网络控制人胎盘部位滋养细胞肿瘤 (PSTT) 的血管生成。

DOI:
10.1016/j.yexcr.2019.111783
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发表时间:
2019-12
期刊:
Exp Cell Res. 2019 Dec 16:111783.
影响因子:
--
通讯作者:
Hongbo Zhao
Hongbo Zhao
中科院分区:
其他
文献类型:
--
作者:
Sai Zhang;Xiang Tao;Qi Cao;Xuan Feng;Jing Wu;Hu;i Yu;Yinhua Yu;Congjian Xu;Hongbo Zhao

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摘要胎盘部位滋养细胞肿瘤(PSTT)是一种罕见的妊娠滋养细胞肿瘤,常表现出高度的血管化,这可能会促进肿瘤的转移。然而,其潜在机制在很大程度上仍然未知。在本研究中,我们发现早期生长反应1(EGR 1)在PSTT组织的癌相关成纤维细胞(CAFs)中高度表达。进一步的数据显示,miR-363下调PSTT来源的CAFs中EGFR 1的表达,而长非编码RNA NONHSAT 003875(lnc 003875)上调EGFR 1的表达。lnc 003875对miR-363表达无影响,但可恢复miR-363模拟物引起的EGFR 1表达的下降。用miR-363模拟物处理的PSTT CAFs的条件培养基废除了人脐静脉内皮细胞(HUVECs)的管形成能力,这可以通过lnc 003875过表达而部分恢复。此外,EGFR 1的过表达可促进PSTT源性CAF中血管生成素-1(Angiopoietin-1,Ang-1)的分泌,改善HUVEC的管状形成,而Ang-1 siRNAs可有效抑制这种作用。体内血管发生实验表明,PSTT源性CAF中的lnc 003875/EGFR 1促进C57 BL/6小鼠HUVEC的血管发生。总之,这些发现表明,lnc 003875/miR-363/EGR 1/Ang-1在CAFs中可能对PSTT的血管生成至关重要。
The rare gestational trophoblastic neoplasia placental site trophoblastic tumor (PSTT) frequently demonstrates a high degree of vascularization, which may facilitate the tumor metastasis. However, the underlying mechanisms remain largely unknown. In the present study, we found that early growth response 1 (EGR1) was highly expressed in the carcinoma-associated fibroblasts (CAFs) of PSTT tissues. Further data showed that miR-363 down-regulatedEGR1expression whereas long non-coding RNA NONHSAT003875 (lnc003875) up-regulatedEGR1expression in PSTT derived CAFs. lnc003875 exerted no effect on miR-363 expression, but it recovered the decrease ofEGR1caused by miR-363 mimic. The conditioned media from PSTT CAFs treated with miR-363 mimic abrogated the tube formation capacity of human umbilical vein endothelialcells(HUVECs), which can be partially restored by lnc003875 over-expression. Moreover, over-expression of EGR1 promoted the secretion of Angiopoietin-1 (Ang-1) in PSTT derived CAFs and improved the tube formation ofHUVECs, which could be effectively abrogated by Ang-1 siRNAs.In vivovasculogenesis assay demonstrated that lnc003875/EGR1 in PSTT derived CAFs promoted the vasculogenesis ofHUVECs in C57BL/6 mice. Collectively, these findings indicated that lnc003875/miR-363/EGR1/Ang-1 in CAFs may be crucial for the angiogenesis of PSTT.
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发表时间: 2017-03-30
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