lncRNA GAU1 Induces GALNT8 Overexpression and Potentiates Colorectal Cancer Progression.

lncRNA GAU1 Induces GALNT8 Overexpression and Potentiates Colorectal Cancer Progression.
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DOI:
10.1155/2021/5960821
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发表时间:
2021
影响因子:
2
通讯作者:
Guan M
Guan M
中科院分区:
医学4区
文献类型:
--
作者:
Tang X;Ruan H;Dong L;Li S;Wu Z;Guan M

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lncRNA是生物过程中重要的表观遗传调控因子。在人类癌症转录组文库MiTranscriptome中,通过样本集富集分析,我们发现GAU1是结直肠癌(CRC)中上调最多的lncRNA(过表达排名百分比= 99.75%,P < 10−50),它与潜在致癌基因GALNT8共表达(Spearman rho = 0.67, P = 2.44 × 10−23,TCGA数据集n = 184)。实验数据显示,GAU1调控GALNT8的表达。GAU1或GALNT8的过表达均能显著促进结直肠癌细胞系的细胞周期和增殖,并与结直肠癌患者预后不良相关(P = 3.04 × 10−2),而GAU1或GALNT8的沉默抑制了癌细胞的增殖,诱导结直肠癌细胞系对奥沙利铂的体外治疗产生耐药性。我们的研究结果提示,先前较少研究的GAU1和GALNT8可能作为结直肠癌的预后标记物和化疗的潜在靶点。
lncRNA is a key epigenetic regulator in biological processes. In the human cancer transcriptome library MiTranscriptome, we identified GAU1 as the top upregulated lncRNA in colorectal cancer (CRC) by sample set enrichment analysis (overexpression ranking percentile = 99.75%, P < 10−50), which is coexpressed with the potential oncogene GALNT8 (Spearman rho = 0.67, P = 2.44 × 10−23, TCGA dataset n = 184). Experimental data revealed that GAU1 regulates the expression of GALNT8. The overexpression of either GAU1 or GALNT8 significantly promotes the cell cycle and proliferation of CRC cell lines and correlates with poor prognosis in patients with CRC (P = 3.04 × 10−2), while silencing of GAU1 or GALNT8 suppressed the cancer cell proliferation and induced the CRC cell line resistance to oxaliplatin in vitro treatment. Our results suggested that the previously less studied GAU1 and GALNT8 may play as CRC prognosis markers and potential targets for chemotherapy treatment.
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