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Induction of neuronal differentiation in glioma cells by histone deacetylase inhibitors based on Connectivity Map discovery

胶质瘤 曲古抑菌素A HDAC6型 组蛋白脱乙酰基酶 HDAC1型 生物 癌症研究 表型筛选 药物发现 细胞生物学 组蛋白 基因 生物化学 表型
作者
Zhao-Qi Tang,Hongbin Xu,Chang Cao,Yue‐Jin Liu,Yan-Rong Ye,Yun Shen
出处
期刊:Anti-Cancer Drugs [Lippincott Williams & Wilkins]
标识
DOI:10.1097/cad.0000000000001667
摘要

Neuron conversion leads to proliferation inhibition of glioma cells and may be an effective strategy to combat glioma and prevent recurrence. In this study, drug repositioning based on Connectivity Map (CMap) was conducted to discover drugs that could induce the differentiation of glioma cells into neuron-like cells, complemented by in vitro experimental validation. Downregulated neuronal genes in glioma were identified by the Human Protein Atlas database and the GeneCards database, and enrichment analysis and Gene Expression Profiling Interactive Analysis (GEPIA) were performed to ensure their reliability before they were uploaded to CMap for drug screening. The potential drug targets were screened through GEPIA and validated by the Chinese Glioma Genome Atlas database. Cell morphology, proliferation, and neuronal marker expression were detected to evaluate the differentiation-inducing effect of the selected drugs. The bioinformatics analysis identified histone deacetylase (HDAC) inhibitors as potential drugs. HDAC1/3/7 showed the relationship with neuronal genes, and HDAC1 showed the highest level of inverse correlation with neuronal gene expression and had the highest hazard ratio. In vitro study showed that both the pan-HDAC inhibitor belinostat, class I and class IIa HDAC inhibitor valproic acid, and selective HDAC1 inhibitor parthenolide induce morphology alteration, proliferation inhibition, expression of neuronal markers including microtubule-associated protein 2, neuronal nuclei antigen, and synaptophysin in U87 cells. This study suggests that the HDAC inhibitors belinostat, valproic acid, and parthenolide can induce glioma cells to differentiate into neuron-like cells, with HDAC1/3/7 being the likely drug targets and HDAC1 potentially playing an important role in this.
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