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Gene expression profile of KM-H2 cells conditional expressing PU.1

ABSTRACT: PU.1 is an Ets family transcription factor that is essential for the differentiation of both myeloid and lymphoid cells. PU.1 is down-regulated in classical Hodgkin lymphoma cells via methylation of the PU.1 promoter. To evaluate whether down-regulation of PU.1 is essential for the growth of cHL cells, we generated KM-H2 derived cell lines conditionally express PU.1 by tet-off system (designated KM-H2tetPU.1). Conditonally expressed PU.1 by tetracycline removal induced complete growth arrest and apoptosis in KM-H2 cells. To elucidate the mechanisms underlying cell cycle arrest and apoptosis induced by PU.1, we compared gene expression profiles of KM-H2tetPU.1 cells 0, 1 and 3 days after PU.1 induction, by DNA microarray. We extracted total RNA from KM-H2tetPU.1 cells 0, 1 and 3 days after PU.1 induction by tetracycline removal. We compared gene expression profiles of KM-H2tetPU.1 cells 0, 1 and 3 days after PU.1 induction using DNA microarray analysis. 4 independent experiments were performed with each RNA samples.

ORGANISM(S): Homo sapiens

SUBMITTER: Yutaka Okuno

PROVIDER: E-GEOD-42440 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Gene expression profile of KM-H2 cells conditional expressing PU.1

Project description:PU.1 is an Ets family transcription factor that is essential for the differentiation of both myeloid and lymphoid cells. PU.1 is down-regulated in classical Hodgkin lymphoma cells via methylation of the PU.1 promoter. To evaluate whether down-regulation of PU.1 is essential for the growth of cHL cells, we generated KM-H2 derived cell lines conditionally express PU.1 by tet-off system (designated KM-H2tetPU.1). Conditonally expressed PU.1 by tetracycline removal induced complete growth arrest and apoptosis in KM-H2 cells. To elucidate the mechanisms underlying cell cycle arrest and apoptosis induced by PU.1, we compared gene expression profiles of KM-H2tetPU.1 cells 0, 1 and 3 days after PU.1 induction, by DNA microarray.

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