Mouse Macrophage Colony Stimulating Factor (mM-CSF) #5228
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Product Information
Formulation
With carrier: Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.2 containing 20 μg BSA per 1 μg mM-CSF. Carrier free: Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.2.
Storage
Stable in lyophilized state at -20°C for 1 year after receipt. Sterile stock solutions reconstituted with carrier protein are stable at 4°C for 2 months and at -20°C for 6 months. Avoid repeated freeze-thaw cycles.
Maintain sterility. Storage at -20°C should be in a manual defrost freezer.
Maintain sterility. Storage at -20°C should be in a manual defrost freezer.
Product Description
| MW (kDa) | 37-50 |
| Purity | >98% as determined by SDS-PAGE of 6 μg reduced (+) and non-reduced (-) recombinant mM-CSF. All lots are greater than 98% pure. |
| Endotoxin | Less than 0.01 ng endotoxin/1 μg mM-CSF. |
| Activity | The bioactivity of recombinant mM-CSF was determined in an M-NFS-60 cell proliferation assay. The ED50 of each lot is between 0.5-2.0 ng/ml. |
| Molecular Formula | Recombinant mM-CSF contains no "tags" and the nonglycosylated protein has a calculated MW of 25,987. DTT-reduced protein migrates as a 37-50 kDa polypeptide and the non-reduced cystine-linked homodimer migrates as a 55-80 kDa protein. Heterogeneity and lower mobility in SDS-PAGE are due to glycosylation. The expected amino-terminal KEVSE of recombinant mM-CSF was verified by amino acid sequencing. |
Source / Purification
Recombinant mouse M-CSF (mM-CSF) Lys33-Glu262 (Accession #NP_031804) was expressed in human 293 cells at Cell Signaling Technology.
Background
Macrophage-colony stimulating factor (M-CSF) is produced by fibroblasts, endothelial cells, stromal cells, macrophages, osteoblasts, and other cell types (1). M-CSF is required for growth and differentiation of monocytes and macrophages (1,2). M-CSF polarizes macrophages into the M2 phenotype where anti-inflammatory IL-10 is produced, rather than the M1 phenotype where inflammatory cytokines are produced. M-CSF also recruits monocytes and enhances angiogenesis by inducing VEGF production (1,2). M-CSF binds to its receptor CSF1R; downstream signaling involves PI3K/Akt, Erk, and Stats 1, 3, and 5 (1,3). An increase in M-CSF expression may contribute to cancer progression, and high plasma M-CSF levels are associated with rheumatoid arthritis (1,4,5).
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For Research Use Only. Not For Use In Diagnostic Procedures.
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