Lentivirus-mediated RNA interference targeting the H19 gene inhibits cell proliferation and apoptosis in human choriocarcinoma cell line JAR.

Lentivirus-mediated RNA interference targeting the H19 gene inhibits cell proliferation and apoptosis in human choriocarcinoma cell line JAR.
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慢病毒介导的针对H19基因的RNA干扰抑制人绒毛膜癌细胞系JAR的细胞增殖和凋亡

DOI:
10.1186/1471-2121-14-26
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发表时间:
2013-05-27
期刊:
影响因子:
--
通讯作者:
Li L
Li L
中科院分区:
生物3区
文献类型:
--
作者:
Yu LL;Chang K;Lu LS;Zhao D;Han J;Zheng YR;Yan YH;Yi P;Guo JX;Zhou YG;Chen M;Li L

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背景 H19是一种父系印记基因,已被证明在滋养层组织中高度表达。以前的研究结果引发了一场争论,即非编码RNA H19在滋养层组织中是作为肿瘤抑制因子还是作为肿瘤促进因子。在本研究中,我们开发了表达H19特异性小干扰RNA(siRNA)的慢病毒载体,以特异性地阻断H19在人绒毛膜癌细胞系p53中的表达。利用这种方法,我们研究了H19基因对乳腺癌细胞增殖、侵袭和凋亡的影响。此外,我们研究了H19敲低对胰岛素样生长因子2(IGF 2),分裂同源物-1(HES-1)和双特异性磷酸酶5(DUSP 5)基因表达的影响。 结果 H19基因敲低可抑制胃癌细胞的增殖和凋亡,但对胃癌细胞的侵袭能力无明显影响。此外,H19基因敲减导致HES-1和DUSP 5表达显著上调,但不导致IGF 2表达上调。 结论 H19下调可以同时抑制绒毛膜癌细胞的增殖和凋亡,这一发现突出了H19在绒毛膜癌中的双重功能,并可以解释关于H19在滋养层组织中是作为肿瘤抑制剂还是肿瘤促进剂的争论。此外,HES-1和DUSP 5的上调可能介导H19下调诱导的对NSCLC细胞增殖和凋亡的抑制。
Background H19 is a paternally imprinted gene that has been shown to be highly expressed in the trophoblast tissue. Results from previous studies have initiated a debate as to whether noncoding RNA H19 acts as a tumor suppressor or as a tumor promotor in trophoblast tissue. In the present study, we developed lentiviral vectors expressing H19-specific small interfering RNA (siRNA) to specifically block the expression of H19 in the human choriocarcinoma cell line JAR. Using this approach, we investigated the impact of the H19 gene on the proliferation, invasion and apoptosis of JAR cells. Moreover, we examined the effect of H19 knockdown on the expression of insulin-like growth factor 2 (IGF2), hairy and enhancer of split homologue-1 (HES-1) and dual-specific phosphatase 5 (DUSP5) genes. Results H19 knockdown inhibited apoptosis and proliferation of JAR cells, but had no significant impact on cell invasion. In addition, H19 knockdown resulted in significant upregulation of HES-1 and DUSP5 expression, but not IGF2 expression in JAR cells. Conclusions The finding that H19 downregulation could simultaneously inhibit proliferation and apoptosis of JAR cells highlights a putative dual function for H19 in choriocarcinoma and may explain the debate on whether H19 acts as a tumor suppressor or a tumor promotor in trophoblast tissue. Furthermore, upregulation of HES-1 and DUSP5 may mediate H19 downregulation-induced suppression of proliferation and apoptosis of JAR cells.
DOI: 10.1038/ng0794-440
发表时间: 1994-07-01
期刊: NATURE GENETICS
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期刊: NATURE
影响因子: 64.8
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期刊: CANCER RESEARCH
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DOI: 10.1006/gyno.1994.1118
发表时间: 1994-05-01
影响因子: 4.7
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