Pro-oncogenic potential of NM23-H2 in hepatocellular carcinoma.

Pro-oncogenic potential of NM23-H2 in hepatocellular carcinoma.
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NM23-H2 在肝细胞癌中的促癌潜力。

DOI:
10.3858/emm.2012.44.3.016
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发表时间:
2012-03-31
影响因子:
12.8
通讯作者:
Kim DG
Kim DG
中科院分区:
医学2区
文献类型:
--
作者:
Lee MJ;Xu DY;Li H;Yu GR;Leem SH;Chu IS;Kim IH;Kim DG

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NM23是一个结构和功能保守的蛋白质家族,被称为核苷二磷酸激酶(NDPK)。NM23-H1、NM23-H2或NM23-LV基因在肝细胞癌的原发灶中有丰富的表达。尽管NM23-H1蛋白被认为是一种转移抑制因子,但NM23-H2的作用似乎鲜为人知。因此,这项研究的目的是检查NM23-H2是否与肝癌的发生有关。NM23-H2在肿瘤组织和周围基质中的表达水平似乎与病因和肿瘤分化无关。其亚细胞定位主要局限于胞浆,少量定位于胞核。NM23-H2在NIH3T3成纤维细胞和HLK3肝细胞中的异位表达使NIH3T3成纤维细胞和HLK3肝细胞的形态发生改变,促进了病灶的形成,并允许非锚定生长。最后,稳定表达NM23-H2的NIH3T3成纤维细胞和HLK3肝细胞在裸鼠体内产生肿瘤,并显示c-Myc过表达。此外,NM23-H2还上调了NF-κB和细胞周期蛋白D1的表达。慢病毒转导NM23-H2 shRNA抑制由稳定表达NM23-H2的HLK3细胞产生的异种移植瘤的生长。综上所述,这些结果表明NM23-H2在肝癌的发生过程中可能是致癌的。
NM23 is a family of structurally and functionally conserved proteins known as nucleoside diphosphate kinases (NDPK). There is abundant mRNA expression of NM23-H1, NM23-H2, or a read through transcript (NM23-LV) in the primary sites of hepatocellular carcinoma (HCC). Although the NM23-H1 protein is implicated as a metastasis suppressor, the role of NM23-H2 appears to be less understood. Thus, the aim of this study was to examine whether NM23-H2 is associated with hepatocarcinogenesis. The level of NM23-H2 expression in tumor tissues and the surrounding matrix appeared to be independent of etiology and tumor differentiation. Its subcellular localization was confined to mainly the cytoplasm and to a lesser extent in the nucleus. Ectopic expression of NM23-H2 in NIH3T3 fibroblasts and HLK3 hepatocytes showed a transformed morphology, enhanced focus formation, and allowed anchorage-independent growth. Finally, NIH3T3 fibroblasts and HLK3 hepatocytes stably expressing NM23-H2 produced tumors in athymic mice and showed c-Myc over-expression. In addition, NF-κB and cyclin D1 expression were also increased by NM23-H2. Lentiviral delivery of NM23-H2 shRNA inhibited tumor growth of xenotransplanted tumors produced from HLK3 cells stably expressing NM23-H2. Collectively, these results indicate that NM23-H2 may be pro-oncogenic in hepatocarcinogenesis.
DOI: 10.1023/a:1023561821551
发表时间: 2003-02-01
影响因子: 3
作者:
Arnaud-Dabernat, S;Bourbon, PM;Daniel, JY
通讯作者: Daniel, JY
DOI: 10.1073/pnas.97.26.14194
发表时间: 2000-12-19
影响因子: 11.1
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发表时间: 1999-08-06
期刊: CELL
影响因子: 64.5
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通讯作者: Darnell, JE
DOI: 10.1093/jnci/dji143
发表时间: 2005-06-01
影响因子: 10.3
作者:
Boissan, M;Wendum, D;Lacombe, ML
通讯作者: Lacombe, ML
DOI: 10.1021/bi025606
发表时间: 2002-05-21
期刊: BIOCHEMISTRY
影响因子: 2.9
作者:
Postel, EH;Abramczyk, BA;Xu, YW
通讯作者: Xu, YW