PMID- 15870857 OWN - NLM STAT- MEDLINE DCOM- 20050726 LR - 20091119 IS - 1019-6439 (Print) IS - 1019-6439 (Linking) VI - 26 IP - 6 DP - 2005 Jun TI - Expression of bone morphogenetic protein 2 in breast cancer cells inhibits hypoxic cell death. PG - 1465-70 AB - BMP-2 is involved in the fetal and postnatal development of the mammary gland but has also been detected in breast cancer cells. To clarify the biological role of BMP-2 in breast cancer, we used the human breast cancer cell line MCF-7. Incubation with BMP-2 under serum-free conditions induced activation of the mitogen activated protein kinases (MAPKs) ERK1/2 and the basic helix-loop-helix transcription factors Id-1, proteins that can protect from apoptosis. Stably transfected MCF-7 cells overexpressing BMP-2 revealed significantly increased resistance to hypoxia-induced apoptosis compared to empty vector controls. Cytoplasmic BMP-2/4 protein expression was detected in carcinoma cells of 81 samples of invasive breast cancer in contrast to adjacent normal mammary epithelial cells. BMP-2/4 expression did not correlate with common prognostic parameters and was not associated with relapse-free or overall survival. We conclude that BMP-2/4 expression is reactivated in invasive breast cancer and part of an autocrine/paracrine mechanism rescuing malignant cells from hypoxic cell death via activation of the MAPK and Id-1 pathway. FAU - Raida, Martin AU - Raida M AD - University Hospital of Leipzig, Department of Hematology and Oncology, D-04103 Leipzig, Germany. martin.raida@medizin.uni-leipzig.de FAU - Clement, Joachim H AU - Clement JH FAU - Ameri, Kurosh AU - Ameri K FAU - Han, Cheng AU - Han C FAU - Leek, Russell D AU - Leek RD FAU - Harris, Adrian L AU - Harris AL LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Greece TA - Int J Oncol JT - International journal of oncology JID - 9306042 RN - 0 (BMP2 protein, human) RN - 0 (BMP4 protein, human) RN - 0 (Bone Morphogenetic Protein 2) RN - 0 (Bone Morphogenetic Protein 4) RN - 0 (Bone Morphogenetic Proteins) RN - 0 (Transforming Growth Factor beta) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinase 1) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinase 3) SB - IM MH - Bone Morphogenetic Protein 2 MH - Bone Morphogenetic Protein 4 MH - Bone Morphogenetic Proteins/analysis/*physiology MH - Breast Neoplasms/metabolism/mortality/*pathology MH - Cell Death MH - Cell Hypoxia MH - Cell Line, Tumor MH - Female MH - Humans MH - Mitogen-Activated Protein Kinase 1/metabolism MH - Mitogen-Activated Protein Kinase 3/metabolism MH - Prognosis MH - Transforming Growth Factor beta/analysis/*physiology EDAT- 2005/05/05 09:00 MHDA- 2005/07/27 09:00 CRDT- 2005/05/05 09:00 PHST- 2005/05/05 09:00 [pubmed] PHST- 2005/07/27 09:00 [medline] PHST- 2005/05/05 09:00 [entrez] PST - ppublish SO - Int J Oncol. 2005 Jun;26(6):1465-70.