The colony-stimulating factor-1 (CSF-1) receptor sustains ERK1/2 activation and proliferation in breast cancer cell lines

Breast cancer is the second leading cause of cancer-related deaths in western countries. Colony-Stimulating Factor-1 (CSF-1) and its receptor (CSF-1R) regulate macrophage and osteoclast production, trophoblast implantation and mammary gland development. The expression of CSF-1R and/or CSF-1 strongly...

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Veröffentlicht in:PloS one 2011-11, Vol.6 (11), p.e27450-e27450
Hauptverfasser: Morandi, Andrea, Barbetti, Valentina, Riverso, Maria, Dello Sbarba, Persio, Rovida, Elisabetta
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creator Morandi, Andrea
Barbetti, Valentina
Riverso, Maria
Dello Sbarba, Persio
Rovida, Elisabetta
description Breast cancer is the second leading cause of cancer-related deaths in western countries. Colony-Stimulating Factor-1 (CSF-1) and its receptor (CSF-1R) regulate macrophage and osteoclast production, trophoblast implantation and mammary gland development. The expression of CSF-1R and/or CSF-1 strongly correlates with poor prognosis in several human epithelial tumors, including breast carcinomas. We demonstrate that CSF-1 and CSF-1R are expressed, although at different levels, in 16/17 breast cancer cell lines tested with no differences among molecular subtypes. The role of CSF-1/CSF-1R in the proliferation of breast cancer cells was then studied in MDAMB468 and SKBR3 cells belonging to different subtypes. CSF-1 administration induced ERK1/2 phosphorylation and enhanced cell proliferation in both cell lines. Furthermore, the inhibition of CSF-1/CSF-1R signaling, by CSF-1R siRNA or imatinib treatment, impaired CSF-1 induced ERK1/2 activation and cell proliferation. We also demonstrate that c-Jun, cyclin D1 and c-Myc, known for their involvement in cell proliferation, are downstream CSF-1R in breast cancer cells. The presence of a proliferative CSF-1/CSF-1R autocrine loop involving ERK1/2 was also found. The wide expression of the CSF-1/CSF-1R pair across breast cancer cell subtypes supports CSF-1/CSF-1R targeting in breast cancer therapy.
doi_str_mv 10.1371/journal.pone.0027450
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Colony-Stimulating Factor-1 (CSF-1) and its receptor (CSF-1R) regulate macrophage and osteoclast production, trophoblast implantation and mammary gland development. The expression of CSF-1R and/or CSF-1 strongly correlates with poor prognosis in several human epithelial tumors, including breast carcinomas. We demonstrate that CSF-1 and CSF-1R are expressed, although at different levels, in 16/17 breast cancer cell lines tested with no differences among molecular subtypes. The role of CSF-1/CSF-1R in the proliferation of breast cancer cells was then studied in MDAMB468 and SKBR3 cells belonging to different subtypes. CSF-1 administration induced ERK1/2 phosphorylation and enhanced cell proliferation in both cell lines. Furthermore, the inhibition of CSF-1/CSF-1R signaling, by CSF-1R siRNA or imatinib treatment, impaired CSF-1 induced ERK1/2 activation and cell proliferation. 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Colony-Stimulating Factor-1 (CSF-1) and its receptor (CSF-1R) regulate macrophage and osteoclast production, trophoblast implantation and mammary gland development. The expression of CSF-1R and/or CSF-1 strongly correlates with poor prognosis in several human epithelial tumors, including breast carcinomas. We demonstrate that CSF-1 and CSF-1R are expressed, although at different levels, in 16/17 breast cancer cell lines tested with no differences among molecular subtypes. The role of CSF-1/CSF-1R in the proliferation of breast cancer cells was then studied in MDAMB468 and SKBR3 cells belonging to different subtypes. CSF-1 administration induced ERK1/2 phosphorylation and enhanced cell proliferation in both cell lines. Furthermore, the inhibition of CSF-1/CSF-1R signaling, by CSF-1R siRNA or imatinib treatment, impaired CSF-1 induced ERK1/2 activation and cell proliferation. 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subjects Animals
Apoptosis
Autocrine signalling
Benzamides
Binding sites
Biocompatibility
Biology
Biomedical materials
Biotechnology
Blotting, Western
Breast cancer
Breast carcinoma
Breast Neoplasms - genetics
Breast Neoplasms - metabolism
c-Jun protein
c-Myc protein
Cancer
Cancer research
Cancer therapies
Cell activation
Cell cycle
Cell growth
Cell Line, Tumor
Cell proliferation
Cell Proliferation - drug effects
Colonies
Colony-stimulating factor
Cyclin D1
Electrophoresis, Polyacrylamide Gel
Enzyme-Linked Immunosorbent Assay
Extracellular signal-regulated kinase
Fibroblasts
Flow Cytometry
Gene expression
Genomes
Health aspects
Hep G2 Cells
Humans
Imatinib
Imatinib Mesylate
Immunoblotting
Implantation
Kinases
Laboratories
Ligands
Macrophage colony stimulating factor
Macrophage Colony-Stimulating Factor - metabolism
Macrophage Colony-Stimulating Factor - pharmacology
Macrophages
Mammary gland
Medical prognosis
Medical research
Medicine
Metabolism
Mice
Mitogen-Activated Protein Kinase 1 - genetics
Mitogen-Activated Protein Kinase 1 - metabolism
Mitogen-Activated Protein Kinase 3 - genetics
Mitogen-Activated Protein Kinase 3 - metabolism
Mutation
Myc protein
NIH 3T3 Cells
Phosphorylation
Phosphorylation - drug effects
Piperazines - pharmacology
Prognosis
Pyrimidines - pharmacology
Real-Time Polymerase Chain Reaction
Receptor, Macrophage Colony-Stimulating Factor - genetics
Receptor, Macrophage Colony-Stimulating Factor - metabolism
RNA, Small Interfering - genetics
Signal transduction
siRNA
Transcription factors
Transgenic animals
Tumor cell lines
Tumorigenesis
Tumors
title The colony-stimulating factor-1 (CSF-1) receptor sustains ERK1/2 activation and proliferation in breast cancer cell lines
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