Delong ZHANG, Huanggui ZHOU, Jun LIU, et al. Effect of LncRNA LINC00475 on biological behaviors of glioma cells[J]. Journal of Third Military Medical University, 2019, 41(3): 213-218.
DOI:
Delong ZHANG, Huanggui ZHOU, Jun LIU, et al. Effect of LncRNA LINC00475 on biological behaviors of glioma cells[J]. Journal of Third Military Medical University, 2019, 41(3): 213-218. DOI: 10.16016/j.1000-5404.201809037.
Effect of LncRNA LINC00475 on biological behaviors of glioma cells
To investigate the differential expression of LINC00475 in brain tissues at different WHO grades of glioma
and determine the effect of LINC00475 on the proliferation
migration
and invasion of glioblastoma cell lines LN382 and U87MG.
Methods
2
With TCGA-GBM database as the analytical foundation
differential expression analysis
ROC curve plotting
and survival analysis were performed towards LINC00475. The expression of LINC00475 in normal brain tissues from 10 patients with brain trauma and glioma tissues of 48 patients was detected with qRT-PCR. The relationships of differential expression of LINC00475 with WHO grades and with prognosis were analyzed. Real time cellular analysis (RTCA) was applied to detect the cell proliferation
invasion and migration between the negative control cells and the cells after LINC00475 knockdown in LN382 and U87MG cells.
Results
2
The analysis of TCGA-GBM database indicated that the expression of LINC00475 was significantly up-regulated in glioma tissues (
P
<
0.001)
the area under the ROC curve equaled to 0.98
and there was a remarkably negative correlation between LINC00475 expression and patient prognosis (
P
<
0.01). qRT-PCR results demonstrated a much higher level of LINC00475 in the glioma tissues than normal tissues (2.62±0.89
vs
1.00±0.36)
and the expression level was positively correlated with WHO grades (WHO Ⅱ: 1.60±0.40
WHO Ⅲ: 2.65±0.63
WHO Ⅳ: 3.30±0.58). Besides
the patients with high LINC00475 expression possessed significantly lower overall survival rate than those with low expression (
P
<
0.05). Moreover
the capacities of cell proliferation
invasion and migration were notably decreased in the silenced cells than the normal cells in on both cell lines (
P
<
0.01).
Conclusion
2
LINC00475 is obviously up-regulated in glioma tissue
and is positively correlated with WHO grades. Its higher expression improves the proliferation
invasion and migration capacities in the tumor cells.
关键词
Keywords
references
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