PMID- 22832278 OWN - NLM STAT- MEDLINE DCOM- 20130110 LR - 20151119 IS - 1423-0291 (Electronic) IS - 1015-2008 (Linking) VI - 80 IP - 1 DP - 2013 TI - Expression profiling of breast tumors based on human epidermal growth factor receptor 2 status defines migration-related genes. PG - 32-40 LID - 10.1159/000339431 [doi] AB - OBJECTIVE: Breast cancer is a heterogeneous neoplasm. Distinct subtypes of breast cancer have been defined, suggesting the existence of molecular differences contributing to their clinical outcomes. However, the molecular differences between human epidermal growth factor receptor 2 (HER2)-positive and HER2-negative breast cancer tumors remain unclear. The aim of this study was to identify a gene expression profile for breast tumors based on their HER2 status. METHODS: The HER2 status was determined by immunohistochemistry (IHC) and fluorescence in situ hybridization (FISH) in 54 breast tumor samples. Using Affymetrix microarray data from these breast tumors, we established the expression profiling of breast cancer based on HER2 IHC and FISH results. To validate microarray experiment data, real-time quantitative reverse transcription-PCR was performed. RESULTS: We found significant differences between the HER2-positive and HER2-negative breast tumor samples, which included overexpression of HER2, other genes located on 17q12 and genes functionally related to migration. CONCLUSION: Our study shows the potential of integrated genomic profiling to shed light on the molecular knowledge of HER2-positive breast tumors. CI - Copyright (c) 2012 S. Karger AG, Basel. FAU - Cuadros, M AU - Cuadros M AD - Department of Pathology, Hospital Universitario Virgen de las Nieves, Granada, Spain. marta@decsai.ugr.es FAU - Cano, C AU - Cano C FAU - Lopez, F J AU - Lopez FJ FAU - Lopez-Castro, R AU - Lopez-Castro R FAU - Concha, A AU - Concha A LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120724 PL - Switzerland TA - Pathobiology JT - Pathobiology : journal of immunopathology, molecular and cellular biology JID - 9007504 RN - 0 (Biomarkers, Tumor) RN - 0 (Ki-67 Antigen) RN - 0 (RNA, Messenger) RN - 0 (RNA, Neoplasm) RN - 0 (Tumor Suppressor Protein p53) RN - EC 2.7.10.1 (ERBB2 protein, human) RN - EC 2.7.10.1 (Receptor, ErbB-2) SB - IM MH - Adenocarcinoma/*genetics/metabolism/pathology MH - Adult MH - Aged MH - Aged, 80 and over MH - Biomarkers, Tumor/*genetics/metabolism MH - Breast Neoplasms/*genetics/metabolism/pathology MH - Carcinoma, Ductal, Breast/genetics/metabolism/pathology MH - Carcinoma, Lobular/genetics/metabolism/pathology MH - Cluster Analysis MH - Female MH - Gene Expression Profiling MH - Gene Expression Regulation, Neoplastic/*genetics MH - Humans MH - Immunohistochemistry MH - In Situ Hybridization, Fluorescence MH - Ki-67 Antigen/genetics/metabolism MH - Middle Aged MH - RNA, Messenger/genetics MH - RNA, Neoplasm/genetics MH - Receptor, ErbB-2/*genetics/metabolism MH - *Transcriptome MH - Tumor Suppressor Protein p53/genetics/metabolism EDAT- 2012/07/27 06:00 MHDA- 2013/01/11 06:00 CRDT- 2012/07/27 06:00 PHST- 2011/11/21 00:00 [received] PHST- 2012/05/08 00:00 [accepted] PHST- 2012/07/27 06:00 [entrez] PHST- 2012/07/27 06:00 [pubmed] PHST- 2013/01/11 06:00 [medline] AID - 000339431 [pii] AID - 10.1159/000339431 [doi] PST - ppublish SO - Pathobiology. 2013;80(1):32-40. doi: 10.1159/000339431. Epub 2012 Jul 24.