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E-GEOD-65913

ABSTRACT: Tet1 is a tumor suppressor of hematopoietic maligancy [array]

PROVIDER: E-GEOD-65913 | ExpressionAtlas | 2015-08-06

REPOSITORIES: ExpressionAtlas

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			Action	DRS
	E-GEOD-65913-analysis-methods.tsv	Tabular
	E-GEOD-65913-atlasExperimentSummary.Rdata	Rdata
	E-GEOD-65913-configuration.xml	Xml
	E-GEOD-65913-percentile-ranks.tsv	Tabular
	E-GEOD-65913.condensed-sdrf.tsv	Tabular

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Project description:Tet1 is a tumor suppressor of hematopoietic maligancy [array]

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Project description:CUX1, a homeodomain-containing transcription factor, is recurrently deleted or mutated in multiple tumor types. In myeloid neoplasms, CUX1 deletion or mutation carries a poor prognosis. We have previously established that CUX1 functions as a tumor suppressor in hematopoietic cells across multiple organisms. Others, however, have described oncogenic functions of CUX1 in solid tumors, often attributed to truncated CUX1 isoforms, p75 and p110. Given the clinical relevance, it is imperative to clarify these discrepant activities. Herein, we sought to determine the CUX1 isoforms expressed in hematopoietic cells, and find that they express the full-length p200 isoform. Through the course of this analysis, we found no evidence of the p75 alternative transcript in any cell type examined. Using an array of orthogonal approaches, including biochemistry, proteomics, CRISPR/Cas9 genomic editing, and analysis of functional genomics datasets across a spectrum of normal and malignant tissue types, we found no data to support the existence of the CUX1 p75 isoform generated by an alternative transcriptional start site. Based on these results, prior studies of p75 require reevaluation, including the interpretation of oncogenic roles attributed to CUX1.

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