Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Discovery of progenitor signatures by time series synexpression analysis during Drosophila cell immortalization [RNA-Seq]

ABSTRACT: To characterize the sequence of events associated with RasV12 immortalization of Drosophila embryonic cells, we generated transcriptional time series during cell line establishment, from primary cultures until passage (P) 19.

ORGANISM(S): Drosophila melanogaster

PROVIDER: GSE73353 | GEO | 2015/09/24

SECONDARY ACCESSION(S): PRJNA296785

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

Discovery of progenitor signatures by time series synexpression analysis during Drosophila cell immortalization [Microarray Expression]

2015-09-23 | GSE73335 | GEO

Discovery of progenitor signatures by time series synexpression analysis during Drosophila cell immortalization [Microarray Expression]

Project description:To characterize the sequence of events associated with RasV12 immortalization of Drosophila embryonic cells, we generated transcriptional time series during cell line establishment, from primary cultures until passage (P) 19. We generated two transcriptional time series from two cell lines (R3 and R7) by sampling the cultures at successive stages, early (P2-4), intermediate (P4-11), and late (P16-19), characterized by different passage times. Time points for the R3 time-series were: P2, P2 (replicate), P5, P6, P7, P8, P16, P17 and P19; for the R7 time-series: P2, P2 (replicate), P3, P4, P7, P8, P16, P17 and P19.

2015-09-23 | E-GEOD-73335 | biostudies-arrayexpress

Discovery of progenitor signatures by time series synexpression analysis during Drosophila cell immortalization [RNA-Seq]

Project description:To characterize the sequence of events associated with RasV12 immortalization of Drosophila embryonic cells, we generated transcriptional time series during cell line establishment, from primary cultures until passage (P) 19. We generated three transcriptional time series from three cell lines (R1, R4 and R5) by sampling the cultures at successive stages, early (P2-4), intermediate (P4-11), and late (P16-19), characterized by different passage times. Time points for the R1 time-series were: P2, P3, P4, P5, P7, P8, P10, P11, P16, P17 and P19; for the R4 time-series: P2, P3, P4, P5, P6, P7, P9, P11, P12, P16, P17 and P19; and for the R5 time-series: P2, P3, P4, P6, P7, P8, P16, P17 and P19

2015-09-24 | E-GEOD-73353 | biostudies-arrayexpress

Discovery of progenitor signatures by time series synexpression analysis during Drosophila cell immortalization

Project description:Discovery of progenitor signatures by time series synexpression analysis during Drosophila cell immortalization

| PRJNA296781 | ENA

Discovery of progenitor cell signatures by time-series synexpression analysis during Drosophila embryonic cell immortalization.

Project description:The use of time series profiling to identify groups of functionally related genes (synexpression groups) is a powerful approach for the discovery of gene function. Here we apply this strategy during Ras(V12) immortalization of Drosophila embryonic cells, a phenomenon not well characterized. Using high-resolution transcriptional time-series datasets, we generated a gene network based on temporal expression profile similarities. This analysis revealed that common immortalized cells are related to adult muscle precursors (AMPs), a stem cell-like population contributing to adult muscles and sharing properties with vertebrate satellite cells. Remarkably, the immortalized cells retained the capacity for myogenic differentiation when treated with the steroid hormone ecdysone. Further, we validated in vivo the transcription factor CG9650, the ortholog of mammalian Bcl11a/b, as a regulator of AMP proliferation predicted by our analysis. Our study demonstrates the power of time series synexpression analysis to characterize Drosophila embryonic progenitor lines and identify stem/progenitor cell regulators.

| S-EPMC4620889 | biostudies-literature

miRNA profile of WI-38 cells and their progressively transformed derivatives

Project description:microRNA array of 4 cell lines: WI-38 primary fibroblasts (“Control”), slow growers (early passage after immortalization, Slow), fast growers (extensive passaging after immortalization) and fast growers transformed by constitutively activated mutant H-RasV12 (“Ras”)

2016-01-29 | GSE77338 | GEO

Discovery of progenitor signatures by time series synexpression analysis during Drosophila cell immortalization

Project description:This SuperSeries is composed of the SubSeries listed below.

2015-09-24 | GSE73354 | GEO

Immortalization capacity of HPV types is inversely related to chromosomal instability in immortal descendants.

Project description:Human papillomavirus (HPV) induced immortalization of human foreskin keratinocytes (HFK) is a two-step process, including 1) the bypass of replicative senescence and acquisition of an extended lifespan, and 2) the outgrowth of immortal cells. Our previous study showed that the immortalization capacity of HPV is type dependent, as reflected by the presence or absence of a crisis period before reaching immortality. In the present study we determined how the HPV-type specific immortalization capacity relates to DNA damage induction and overall genomic instability. Early passage HFKs transduced with HPV types 16, 18, 31, 33, 35, 45, 51, 59, 66 and 70 showed an increased number of double strand DNA breaks compared to controls, without significant differences between the various HPV-types. However, immortal descendants of HPV-transduced HFKs that underwent a crisis period (HPV45-, 51-, 59-, 66- and 70-transduced HFKs) showed significantly more chromosomal aberrations compared to those without a crisis period (HPV16-, 18-, 31-, and 35-transduced HFKs) (p<0.01). In particular, regions on chromosome 5p, 8, and 9q were significantly more frequently altered in cells with crisis. Interestingly, the hTERT locus at 5p was exclusively gained in cell lines with crisis. Chromothripsis was detected in one of the HPV16-immortalized cell lines in which multiple rearrangements within chromosome 8 resulted in a gain of c-MYC. In conclusion, the present study shows that upon HPV-induced immortalization, the number of chromosomal aberrations is inversely related to the immortalization capacity of the virus type. This suggests that hrHPV types with reduced immortalization capacity in vitro, as reflected by a crisis period, require more genetic host cell aberrations to trigger immortalization.

2016-08-01 | GSE72063 | GEO

MDAH-041 Spontaneous Immortalization

Project description:Gene expression at various stages of immortalization

2016-05-12 | GSE46931 | GEO

Immortalization capacity of HPV types is inversely related to chromosomal instability in immortal descendants.

2016-08-01 | E-GEOD-72063 | biostudies-arrayexpress