HnRNP L is important for the expression of oncogene SRSF3 and oncogenic potential of oral squamous cell carcinoma cells.

HnRNP L is important for the expression of oncogene SRSF3 and oncogenic potential of oral squamous cell carcinoma cells.
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HnRNP L 对于癌基因 SRSF3 的表达和口腔鳞状细胞癌细胞的致癌潜力很重要

DOI:
10.1038/srep35976
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发表时间:
2016-11-03
期刊:
影响因子:
4.6
通讯作者:
Guo J
Guo J
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Jia R;Zhang S;Liu M;Zhang Y;Liu Y;Fan M;Guo J

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口腔鳞状细胞癌(OSCC)是口腔疾病相关死亡的主要原因。口腔鳞状细胞癌的发展机制在很大程度上仍然是未知的。异质核核糖核蛋白L(HnRNP L)是一种多功能剪接因子。据报道,它是细胞凋亡的重要调节因子。然而,hnRNP L在肿瘤中的功能还需要进一步研究。在本研究中,我们发现口腔鳞癌组织中hnRNP L的表达水平显著高于正常组织。hnRNP L的耗尽延缓了OSCC细胞的细胞生长、细胞迁移和肿瘤发生。HnRNP L调节致癌剪接因子SRSF3的表达和SRSF3外显子4的选择性剪接。口腔鳞癌组织中hnRNP L的表达与SRSF3的表达相关。提示hnRNP L在口腔鳞状细胞癌的发病机制中起重要作用,可能成为治疗口腔鳞状细胞癌的新靶点。
Oral squamous cell carcinoma (OSCC) is the leading cause of death related to oral diseases. The mechanisms of OSCC development remain largely unknown. Heterogeneous nuclear ribonucleoprotein L (HnRNP L) is a multi-functional splicing factor. It has been reported to be an important regulator of apoptosis. However, the functions of hnRNP L in cancer need to be further explored. In the present study, we found that OSCC tissues expressed significantly higher levels of hnRNP L than normal tissues. Depletion of hnRNP L retarded cell growth, cell migration, and tumorigenesis of OSCC cells. HnRNP L regulates both the expression of oncogenic splicing factor SRSF3 and the alternative splicing of SRSF3 exon 4. Expression of hnRNP L is correlated with SRSF3 expression in OSCC tissues. These findings suggest that hnRNP L is important for the pathogenesis of OSCC and may be a novel potential therapeutic target of OSCC.
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