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MYCN-transformed neuroblasts from TH-MYCN mice are selectively isolated and maintained as spheres in vitro

ABSTRACT: It has been already reported that there are undifferentiated/proliferating neuroblasts in the postnatal sympathetic ganglia in TH-MYCN mice. We established suitable spheroid culture condition that selectively isolates undifferentiated neuroblasts from superior mesenteric ganligon (SMG) of TH-MYCN mice. In the present study, in order to investigate the transcriptomic differences among 3-week-old WT SMG, TH-MYCN (hemizygote) SMG, and TH-MYCN (hemizygote) spheres, we carried out microarray gene expression analysis. We investigated whether or not undifferentiated cells observed in TH-MYCN SMG were selectively isolated and maintaned as spheres.

ORGANISM(S): Mus musculus

PROVIDER: GSE87782 | GEO | 2017/04/01

SECONDARY ACCESSION(S): PRJNA347592

REPOSITORIES: GEO

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Retinoic acid-free spheroid culture condition is suitable for growth of TH-MYCN neuroblasts

Project description:It has been already reported that there are undifferentiated/proliferating neuroblasts in the postnatal sympathetic ganglia in TH-MYCN mice. Given the fact that neuroblastoma is derived from sympathoadrenal progenitors which are originated from neural crest stem cells, we attempted to use the well-established culture condition that has been utilized to maintain derivatives of neural crest stem cells. However, the medium contained retinoic acid (RA) which is known to induce neuroblastoma differentiation and is used in clinical treatment against high-risk patients. In the present study, the medium with RA (RA (+) medium) and without RA (RA (-) medium) were compared. Since undifferentiated neuroblasts are observable at one of the sympathetic ganglia, superior mesenteric ganglion (SMG), in 3-week-old TH-MYCN hemizygote (TH-MYCN+/-) mice with 129+Ter/SvJcl mice background, we dissected and dissociated the SMG to prepare single cells. These cells were cultured in either RA (+) or RA (-) media. Spheres formed in either RA (+) or RA (-) medium were subjected to microarray analysis.

2017-04-01 | GSE87781 | GEO

Transcriptomic changes in MYC and PRC2 targets are prominent events in the early pathogenesis of neuroblastoma in TH-MYCN mice

Project description:It has been already reported that there are undifferentiated/proliferating neuroblasts in the postnatal sympathetic ganglia in TH-MYCN mice. We established suitable spheroid culture condition that selectively isolates undifferentiated neuroblasts from superior mesenteric ganligon (SMG) of TH-MYCN mice. In the present study, in order to investigate the transcriptomic differences between embryonic day 13.5 (E13.5) WT derived primary spheres and E13.5 TH-MYCN derived passageable spheres, we carried out microarray gene expression analysis. We investigated critical molecular events in MYCN-transformed neuroblastoma cells in TH-MYCN mice.

2017-04-01 | GSE87783 | GEO

Array comparative genomic hybridization of spheres derived from TH-MYCN (hemizygote) mice [Agilent-027441]

Project description:It has been already reported that there are undifferentiated/proliferating neuroblasts in the postnatal sympathetic ganglia in TH-MYCN mice, a neuroblastoma model. We established suitable spheroid culture condition that selectively isolates undifferentiated neuroblasts from superior mesenteric ganligon (SMG) of TH-MYCN mice. In order to investigate the chromosomal alterations (gains or losses) of spheres derived from TH-MYCN mice, we carried out array comparative genomic hybridization. We investigated whether chromosomal alterations occured during early neuroblastoma tumorigenesis in TH-MYCN mice.

2017-04-01 | GSE89740 | GEO

Array comparative genomic hybridization of tumor tissue developed in TH-MYCN (hemizygote) mice [Agilent-015028]

Project description:In order to investigate the chromosomal alterations (gains or losses) of tumor tissuees developed in TH-MYCN mice, a neuroblastoma model, we carried out array comparative genomic hybridization. We investigated whether chromosomal alterations occured in the tumor tissues developed in the abdomen of TH-MYCN hemizygote mice.

2017-04-01 | GSE89739 | GEO

Mus musculus

Project description:MYCN-transformed neuroblasts from TH-MYCN mice are selectively isolated and maintained as spheres in vitro

| PRJNA347592 | ENA

Expression data from MYCN transgenic mice

Project description:TH-MYCN transgenic (Tg) mice are the model for neuroblastoma. One of the sympathetic ganglia is the origin of neuroblastoma in those mice. The tumor incidences of homozygotes and hemizygotes are 100% and 70-80%, respectively. The involvement of midkine (Mdk), a tumor-related growth factor, was also examined by knockout mice. Ganglia and tumor tissues were dissected from several genotypes of mice (MYCN Tg homozygote and hemizygote, knockout (KO) of Mdk gene). In some of cases, we cultured neurosphere and tumorsphere. The mRNA extracted from those samples were subjected to Affymetrix microarrays.

2014-01-28 | E-GEOD-43419 | biostudies-arrayexpress

Mus musculus

Project description:Array comparative genomic hybridization of spheres derived from TH-MYCN (hemizygote) mice [Agilent-027441]

| PRJNA353068 | ENA

Array comparative genomic hybridization of tissue developed in TH-MYCN (hemizygote) mice

Project description:Array comparative genomic hybridization of tissue developed in TH-MYCN (hemizygote) mice

| PRJNA353067 | ENA

RNA-seq transcriptomic analysis of mouse sympathetic neuroblasts and adrenal chromaffin cells

Project description:Adrenal chromaffin cells and sympathetic neuron are derived from neural crest precursors and both cell types can give rise to childhood cancer, neuroblastoma. However only limited is known about the mechanism of their development. Better understanding of their transcriptomic profiles during development could gives an insight into the cell fates acquisition as well as the origin of neuroblastoma. Yellow fluorescent protein expressing sympathetic neuroblasts and adrenal chromaffin cells were isolated from E12.5 TH-IRES-Cre;ROSA26-EYFP mouse embryos by fluorescence-activated cell sorting. Transcriptomic profiles of sympathetic neuroblasts and adrenal chromaffin cells from embryonic age (E)12.5 TH-IRES-Cre;ROSA26-EYFP mice were generated by RNA sequencing, in four paired biological replicates.

2019-05-24 | E-MTAB-7086 | biostudies-arrayexpress

Transcriptomes of lineage-specific Drosophila neuroblasts profiled via genetic targeting and robotic sorting

Project description:A brain consists of numerous distinct neurons arising from a limited number of progenitors, called neuroblasts in Drosophila. Each neuroblast makes a specific neuronal lineage. To unravel the transcriptional networks that underlie the development of distinct neuroblast lineages, we marked and isolated lineage-specific neuroblasts for RNA sequencing. We labeled particular neuroblasts throughout neurogenesis by activating a conditional neuroblast driver in specific lineages using various intersection strategies. The targeted neuroblasts were efficiently recovered using a custom-built device for robotic single cell picking. Transcriptome analysis on the mushroom body, antennal lobe, and type II neuroblasts besides non-selective neuroblasts, neurons, and glia revealed a rich repertoire of transcription factors expressed among neuroblasts in diverse patterns. In addition to those likely pan-neuroblast transcription factors, there exist many transcription factors selectively enriched or repressed in certain neuroblasts. The unique combinations of transcription factors present in different neuroblasts may govern the diverse lineage-specific neuron fates

2015-12-29 | GSE71104 | GEO

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