Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Cdr2 siRNA knockdown during passage through mitosis: HeLa cells, Rat1 wild type and c-myc null cells


ABSTRACT: [Hela cells]: We performed cdr2 knockdown with a pool of 4 cdr2-specific siRNAs to test whether cdr2 may regulate c-myc target genes as cells passage through mitosis. [Rat1a wild type and myc null cells]: We performed cdr2 knockdown using a pool of 4 cdr2-specific siRNAs to test whether cdr2 may regulate c-myc target genes as cells passage through mitosis. [HeLa cells]: Cells were transfected with control or cdr2 siRNAs and then cells were synchronized in mitosis using a sequential thymidine/nocodazole block. Cells were subsequently released from nocodazole block and after 3 hours RNA was harvested for microarray analysis [Rat-1 wild type (TGR) and c-myc null (15.19) cells]: Cells were transfected with control or cdr2 siRNAs and then cells were synchronized in mitosis using a sequential thymidine/nocodazole block. Cells were then subsequently released from nocodazole block and after 3 hours RNA was harvested for microarray analysis

ORGANISM(S): Rattus norvegicus

SUBMITTER: Kevin O'Donovan 

PROVIDER: E-GEOD-20037 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

The onconeural antigen cdr2 is a novel APC/C target that acts in mitosis to regulate c-myc target genes in mammalian tumor cells.

O'Donovan Kevin J KJ   Diedler Jennifer J   Couture Graeme C GC   Fak John J JJ   Darnell Robert B RB  

PloS one 20100407 4


Cdr2 is a tumor antigen expressed in a high percentage of breast and ovarian tumors and is the target of a naturally occurring tumor immune response in patients with paraneoplastic cerebellar degeneration, but little is known of its regulation or function in cancer cells. Here we find that cdr2 is cell cycle regulated in tumor cells with protein levels peaking in mitosis. As cells exit mitosis, cdr2 is ubiquitinated by the anaphase promoting complex/cyclosome (APC/C) and rapidly degraded by the  ...[more]

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