Abstract
Macrophage proliferation and migration are important for many facets of immune response. Here we showed that stimulation of macrophages with type B CpG oligodeoxynucleotides (CpG-B ODNs) such as CpG-ODN 1668 increased the production of anti-inflammatory cytokine interleukin 1 receptor antagonist (IL-1Ra) in a TLR9- and MyD88-dependent manner. The CpG-B ODNs-induced IL-1Ra increased macrophage migration and promoted macrophage proliferation by down-regulating the expression of a cell cycle negative regulator, p27 to increase cell population in the S phase. The induction of IL-1Ra by CpG-B ODNs was F-spondin dependent. Knockdown of F-spondin and IL-1Ra decreased CpG-B ODNs-induced macrophage migration whereas overexpression of IL-1Ra increased migration of those cells. These findings demonstrated novel roles for F-spondin and IL-1Ra in CpG-B ODNs-mediated cell proliferation and migration of macrophages.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Animals
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Cell Movement / drug effects*
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Cell Proliferation / drug effects
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Extracellular Matrix Proteins / metabolism*
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Gene Knockdown Techniques
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Interleukin 1 Receptor Antagonist Protein / metabolism*
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Macrophages / cytology*
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Macrophages / drug effects
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Macrophages / metabolism*
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Mice
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Mice, Inbred BALB C
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Myeloid Differentiation Factor 88 / metabolism
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Oligodeoxyribonucleotides / pharmacology*
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RAW 264.7 Cells
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S Phase / drug effects
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Signal Transduction / drug effects
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Toll-Like Receptor 9 / metabolism
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Up-Regulation / drug effects
Substances
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CPG-oligonucleotide
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Extracellular Matrix Proteins
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F-spondin protein, mouse
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Interleukin 1 Receptor Antagonist Protein
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Myeloid Differentiation Factor 88
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Oligodeoxyribonucleotides
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Toll-Like Receptor 9
Grants and funding
This project was funded by Academia Sinica, Program Project on Genomics and Proteomics (grant AS-94F-006). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.