Systematic name M17387
Brief description Genes down-regulated in MFCF-7 cells (breast cancer) by exogenous HG1 [GeneID=2688].
Full description or abstract We have exploited a discrepancy in the oncogenic potential of autocrine and exogenous human growth hormone (hGH) in an attempt to identify molecules that could potentially be involved in oncogenic transformation of the human mammary epithelial cell. Microarray analysis of 19,000 human genes identified a subset of 305 genes in a human mammary carcinoma cell line that were remarkably different in their response to autocrine and exogenous hGH. Autocrine and exogenous hGH also regulated 167 common genes. Semiquantitative reverse transcription-PCR confirmed differential regulation of genes by either autocrine or exogenous hGH. Functional analysis of one of the identified autocrine hGH-regulated genes, TFF3, determined that its expression is sufficient to support anchorage-independent growth of human mammary carcinoma cells. Small interfering RNA-mediated knockdown of TFF3 concordantly abrogated anchorage-independent growth of mammary carcinoma cells and abrogated the ability of autocrine hGH to stimulate oncogenic transformation of immortalized human mammary epithelial cells. Further functional characterization of the identified subset of specifically autocrine hGH regulated genes will delineate additional novel oncogenes for the human mammary epithelial cell.
Collection C2: Curated
      CGP: Chemical and Genetic Perturbations
Source publication Pubmed 15845533   Authors: Xu XQ,Emerald BS,Goh EL,Kannan N,Miller LD,Gluckman PD,Liu ET,Lobie PE
Exact source Table 2: Down-regulated
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Source species Homo sapiens
Contributed by John Newman (University of Washington)
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Version history 3.0: Renamed from GH_EXOGENOUS_ANY_DN

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