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Title: CAMK1D amplification implicated in epithelial-mesenchymal transition in basal-like breast cancer (aCGH)      
keywords:
Variation
ID:
PRJNA114177
description:
Title: CAMK1D amplification implicated in epithelial-mesenchymal transition in basal-like breast cancer Summary: Breast cancer exhibits clinical and molecular heterogeneity, where expression-profiling studies have identified five major molecular subtypes. The basal-like subtype, expressing basal epithelial markers and negative for estrogen receptor (ER), progesterone receptor (PR) and HER2, is associated with higher overall levels of DNA copy number alteration (CNA), specific CNAs (like gain on chromosome 10p), and poor prognosis. Discovering the molecular genetic basis of tumor subtypes may provide new opportunities for therapy. To identify the driver oncogene on 10p associated with basal-like tumors, we analyzed genomic profiles of 172 breast carcinomas. The smallest shared region of gain spanned just seven genes at 10p13, including calcium/calmodulin-dependent protein kinase ID (CAMK1D), functioning in intracellular signaling but not previously linked to cancer. By microarray, CAMK1D was overexpressed when amplified, and by immunohistochemistry exhibited elevated expression in invasive carcinomas compared to carcinoma in situ. Engineered overexpression of CAMK1D in non-tumorigenic breast epithelial cells led to increased cell proliferation, and molecular and phenotypic alterations indicative of epithelial-mesenchymal transition (EMT), including loss of cell-cell adhesions and increased cell migration and invasion. Our findings identify CAMK1D as a novel amplified oncogene linked to EMT in breast cancer, and as a potential therapeutic target with particular relevance to clinically unfavorable basal-like tumors. Overall design: Overall design: cDNA microarrays from the Stanford Functional Genomics Facility were used to carry out array-based Comparative Genomic Hybridization (array CGH) analysis of 172 human breast tumor specimens, in comparison to normal female DNA. Map positions for arrayed cDNA clones were assigned using the NCBI genome assembly, accessed through the UCSC genome browser database (NCBI Build 36). The CLuster Along Chromosomes (CLAC) method was used to call DNA gains and losses. Set of arrays that are part of repeated experiments Keywords: Biological Replicate Biological Replicate Computed
accesstypes:
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landingpage: http://www.ncbi.nlm.nih.gov/bioproject/PRJNA114177
authentication:
none
authorization:
none
ID:
pmid:19383354
dateReleased:
09-08-2009
name:
Homo sapiens
ncbiID:
ncbitax:9606
abbreviation:
NCBI
homePage: http://www.ncbi.nlm.nih.gov
ID:
SCR:006472
name:
National Center for Biotechnology Information
homePage: http://www.ncbi.nlm.nih.gov/bioproject
ID:
SCR:004801
name:
NCBI BioProject
  • R01 CA112016/CA/NCI NIH HHS/United States

  • T32 CA009302/CA/NCI NIH HHS/United States

  • R01 CA097139-05/CA/NCI NIH HHS/United States

  • R01 CA097139/CA/NCI NIH HHS/United States

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