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Transcriptomic analysis of neuroblastoma cells in response to stable over-expression of FOXD3 antisense RNA 1 (FOXD3-AS1)

ABSTRACT: Neuroblastoma (NB), a malignant embryonic tumor arising from primitive neural crest cells, accounts for more than 7% of malignancies and around 15% of cancer-related mortality in childhood. Better elucidating the mechanisms of tumorigenesis and aggressiveness is important for improving the therapeutic efficiencies of NB. Through mining of publically available microarray datasets, we discovered a novel 963-bp lncRNA, named FOXD3 antisense RNA 1 (FOXD3-AS1), as an independent prognostic marker for favorable clinical outcome of NB patients. To investigate the mechanisms underlying the oncogenic functions of FOXD3-AS1, we employed the Illumina HiSeq PE125/PE150 as a discovery platform to analyze the transcriptome profiling changes of human BE(2)-C cells in response to stable over-expression of FOXD3-AS1. The results showed that stable over-expression of FOXD3-AS1 led to altered expression of 3191 human mRNAs, including 1542 up-regulated genes and 1650 down-regulated genes. Then we found the possible roles of these differentially regulated mRNAs in selected pathways including cell cycle/proliferation, apoptosis, and cytokine/chemokine responses by Bioinformatic analysis. Furthermore, we validated the RNA-seq results by real-time RT-PCR with high identity. Overall, our results provided fundamental information about the transcriptomic changes in response to FOXD3-AS1 over-expression in human NB cells, and these findings will help us understand the pathogenesis of NB.

ORGANISM(S): Homo sapiens

PROVIDER: GSE105016 | GEO | 2018/10/30

REPOSITORIES: GEO

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Transcriptomic analysis of neuroblastoma cells in response to stable over-expression of FOXD3 antisense RNA 1 (FOXD3-AS1)

Project description:Transcriptomic analysis of neuroblastoma cells in response to stable over-expression of FOXD3 antisense RNA 1 (FOXD3-AS1)

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Project description:Neuroblastoma (NB), a malignant embryonic tumor arising from primitive neural crest cells, accounts for more than 7% of malignancies and around 15% of cancer-related mortality in childhood. Better elucidating the mechanisms of tumorigenesis and aggressiveness is important for improving the therapeutic efficiencies of NB. Through mining of public datasets, we identified myeloid zinc finger 1 antisense RNA 1 (MZF1-AS1) as a novel lncRNA associated with the progression of NB. To investigate the mechanisms underlying the oncogenic functions of MZF1-AS1, we employed the Illumina HiSeq X Ten as a discovery platform to analyze the transcriptome profiling changes of human SH-SY5Y cells in response to stable over-expression of MZF1-AS1. The results showed that stable over-expression of MZF1-AS1 led to altered expression of 2920 human mRNAs, including 1476 up-regulated genes and 1444 down-regulated genes. Then we found the possible roles of these differentially regulated mRNAs in selected pathways including proline synthesis, invasion, and metastasis by Bioinformatic analysis. Furthermore, we validated the RNA-seq results by real-time RT-PCR with high identity. Overall, our results provided fundamental information about the transcriptomic changes in response to MZF1-AS1 over-expression in human NB cells, and these findings will help us understand the pathogenesis of NB.

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Project description:The transcription factor forkhead box D3 (FoxD3) is a transcriptional factor which belongs to forkhead box (Fox) transcription factor family. The functions of FOXD3 in embryogenesis and in the development of neural crest cells have been clearly defined. Its tumor suppressor function hasbeen found in many types of cancer in recent years. However, the study about its roles in lung cancerdevelopment is still lacking. Our study found that deficiency of FoxD3 in lung cancer enhanced cell growth and cell invasion. RNA-sequence analysis demonstrated that loss of FoxD3 mainly affected cell cycle progression related gene expression. Knockdown of FoxD3 led to G2-M cell accumulation with up-regulation of DNA replication licensing factor MCM5 and MCM4 as well as cell cycle regulator polo-like kinase-1 (PLK1) and CDC6. Over-expression of those genesin lung cancer was associated with poor clinical outcomes of lung cancer patients. We also identified high mobility group box-1(HMGB1), Hras and Ephrin B1 gene expression increase after FoxD3 silencing which may participate in enhanced lung cancer cell invasion. Our study identifiedtumor suppressor function of FoxD3 in lung cancer andwe did the first comprehensive analysis of the genes regulated by FoxD3 for cell proliferation and invasion in lung cancer. The identified genes regulated by FoxD3 through our analysis will provide valuable information to uncover the mechanism of FoxD3 tumor suppressor function.

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Project description:Neuroblastoma (NB), a malignant embryonic tumor arising from primitive neural crest cells, accounts for more than 7% of malignancies and around 15% of cancer-related mortality in childhood. Better elucidating the mechanisms of tumorigenesis and aggressiveness is important for improving the therapeutic efficiencies of NB. We identified a small 51-amino acid peptide (sPEP1) encoded by hepatocyte nuclear factor 4 alpha antisense RNA 1 (HNF4A-AS1) in NB cells treated by serum deprivation. To investigate the mechanisms underlying the oncogenic functions of sPEP1, we employed the Illumina HiSeq X Ten as a discovery platform to analyze the transcriptome profiling changes of human SH-SY5Y cells in response to stable over-expression of sPEP1. The results showed that stable over-expression of sPEP1 led to altered expression of 2543 human mRNAs, including 2457 up-regulated genes and 86 down-regulated genes. Then we found the possible roles of these differentially regulated mRNAs in selected pathways including stemness, senescence, invasion, and metastasis by Bioinformatic analysis. Furthermore, we validated the RNA-seq results by real-time RT-PCR with high identity. Overall, our results provided fundamental information about the transcriptomic changes in response to sPEP1 over-expression in human NB cells, and these findings will help us understand the pathogenesis of NB.

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Transcription profiling of mouse B16-F10 melanoma cells transfected with FoxD3

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