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MiRNA array analysis of VMRC-LCD cells following ASCL1 knockdown function.

ABSTRACT: To investigate the function of ASCL1 in ASCL1-positive lung adenocarcinoma, we established VMRC-LCD cell line in which the target gene has been knocked down by siRNA. We then performed gene expression profiling analysis using data obtained from RNA-seq of 3 different cells.

ORGANISM(S): synthetic construct Homo sapiens

PROVIDER: GSE207250 | GEO | 2023/07/01

REPOSITORIES: GEO

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Transcriptome analysis of VMRC-LCD cells following ASCL1 knockdown

Project description:ASCL1 is a master transcription factor for neuroendocrine differentiation. RNA-sequencing analysis on VMRC-LCD cells following ASCL1 knockdown revealed a subset of genes possibly regulated by ASCL1.

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ZFP36L1 is suppressed in ASCL1-positive lung adenocarcinoma and represses tumorigenic function

Project description:To investigate the function of ZFP36L1 in ASCL1-positive lung adenocarcinoma, we established VMRC-LCD cell line in which the target gene has been overexpressed by plasmid vector. We then performed gene expression profiling analysis using data obtained from RNA-seq of 2 different cells.

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Transcriptome analysis of VMRC-LCD cells following ASCL1 knockdown

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Expression data from an ASCL1 siRNA experiment

Project description:To elucidate whether or not a subtype of adenocarcinoma with neuroendocrine nature has poor prognosis, we performed gene expression profiling of an achaete-scute complex homolog 1 (ASCL1) siRNA experiment. siRNA againt ASCL1 was transfected into DMS79 cells.

2011-07-18 | E-GEOD-21216 | biostudies-arrayexpress

MicroRNA analysis of Lu134A cells following ASCL1 knockdown

Project description:Molecular subtypes of SCLC have been defined by the expression status of ASCL1, NEUROD1, YAP1, and POU2F3 transcription regulators. ASCL1 knockdown resulted in decreased and increased expression of miR-375 and miR-455-3p, respectively. Analyses of publicly available transcriptome datasets suggested that miR-375 induced by ASCL1 is involved in YAP1 suppression whereas miR-455-3p is higher in non-neuroendocrine SCLC cells lacking ASCL1 expression.

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Expression data from an ASCL1 siRNA experiment

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Transcriptome analysis ofLu134A cells following ASCL1 knockdown and SBC5 cells transfected by miR455-3p mimic

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Distinct Function for ASCL1 and NEUROD1 in Pulmonary Neuroendocrine Tumors (ChIP-seq)

Project description:Small cell lung carcinoma (SCLC) and large cell neuroendocrine carcinoma (LCNEC) are high-grade pulmonary neuroendocrine tumors. The neural basic helix-loop-helix (bHLH) transcription factors ASCL1 and NEUROD1 have been shown to play crucial roles in promoting the malignant behavior and survival of human SCLC cell lines. In this study, we find ASCL1 and NEUROD1 identify distinct neuroendocrine tumors, bind distinct genomic loci, and regulate mostly distinct genes. ASCL1 and NEUROD1 are often bound in super-enhancers that are associated with highly expressed genes in their respective SCLC cell lines suggesting different cell lineage of origin for these tumors. ASCL1 targets oncogenic genes such as MYCL1, RET, and NFIB, while NEUROD1 targets the oncogenic gene MYC. Although ASCL1 and NEUROD1 regulate different genes, many of these gene targets commonly contribute to neuroendocrine and cell migration function. ASCL1 in particular also regulates genes in the NOTCH pathway and genes important in cell-cycle dynamics. Finally, we demonstrate ASCL1 but not NEUROD1 is required for SCLC and LCNEC tumor formation in current in vivo genetic mouse models of pulmonary neuroendocrine tumors ChIP-seq analysis performed on three ASCL1high and two NEUROD1high human SCLC cell lines to identify ASCL1 and/or NEUROD1 binding sites in these two types of cells. Also, we performed ChIP-seq for Ascl1 binding sites in mouse neuroendocrine lung tumors obtained from Trp53;Rb1;Rbl2 triple knockout model mice treated with Adeno-CMVCRE intratracheally.

2016-07-21 | E-GEOD-69394 | biostudies-arrayexpress

Identifying the genomic regions co-bound by ASCL1 and mSWI/SNF remodelers during neural differentiation [ChIP-seq]

Project description:We interfeered with the ASCL1-mSWI/SNF interaction: to abolish ASCL1 function, we knocked out ASCL1 in human iPSCs, while we used the BRM014 inhibitor to block the mSWI/SNF ATPase activity. We then performed ASCL1 ChIPseq in DIV24 WT and BRM014-treated neural cultures, and SMARCB1 ChIPseq in DIV24 WT and ASCL1 KO neural cultures, when ASCL1 expression is highest.

2023-03-14 | GSE214381 | GEO

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