ProDots Recombinant Human M-CSF Protein

ProDots® Recombinant Human M-CSF stimulates cell proliferation of the M-NFS-60 mouse myelogenous luekemia lymphoblast cell line in a dose-dependent manner. The ED50 for this effect is 0.5-1.5 ng/mL.

1 μg/lane of ProDots® Recombinant Human M-CSF was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized with silver staining, showing bands at 19 kDa and 35 kDa, respectively.

Product Discontinued

ProDots Recombinant Human M-CSF Protein Summary

• Additional Information: Supplied as ready-to-use 5 ug protein balls
• Details of Functionality: Measured in a cell proliferation assay using M‑NFS‑60 mouse myelogenous leukemia lymphoblast cells. Nakoinz, I. et al. (1990) J. Immunol. 145:860. The ED₅₀ for this effect is 0.5-1.5 ng/mL.
• Source: E. coli-derived human M-CSF protein
  Glu33 - Ser190, with an N-terminal Met
• Accession #: NP_757350
• N-terminal Sequence: Met
• Protein/Peptide Type: ProDots Proteins
• Purity: >97%, by SDS-PAGE under reducing conditions and visualized by silver stain.
• Endotoxin Note: <0.10 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

• Dilutions:
  • Bioactivity
• Theoretical MW: 18.5 kDa (monomer).
  Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Packaging, Storage & Formulations

• Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 6 months from date of receipt at room temperature.
  • 12 months from date of receipt at 2-8 °C as supplied.
  • 1 month at 2-8 °C under sterile conditions after reconstitution.
  • 3 months at -20 to -80 °C under sterile conditions after reconstitution.
• Purity: >97%, by SDS-PAGE under reducing conditions and visualized by silver stain.
• Reconstitution Instructions: For a stock solution, reconstitute at 50-500 μg/mL in sterile PBS, or simply roll ProDot^® directly into cell culture medium.

Notes

726881.0

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for ProDots Recombinant Human M-CSF Protein

• colony stimulating factor 1 (macrophage)
• CSF1
• CSF-1
• Lanimostim
• macrophage colony stimulating factor
• macrophage colony-stimulating factor 1
• MCSF
• M-CSF
• MCSFlanimostim
• MGC31930

Background

M-CSF, also known as CSF-1, is a four-alpha-helical-bundle cytokine that is the primary regulator of macrophage survival, proliferation and differentiation. M-CSF is also essential for the survival and proliferation of osteoclast progenitors. M-CSF also primes and enhances macrophage killing of tumor cells and microorganisms, regulates the release of cytokines and other inflammatory modulators from macrophages, and stimulates pinocytosis. M-CSF increases during pregnancy to support implantation and growth of the decidua and placenta. Sources of M-CSF include fibroblasts, activated macrophages, endometrial secretory epithelium, bone marrow stromal cells and activated endothelial cells. The M-CSF receptor (c-fms) transduces its pleotropic effects and mediates its endocytosis. M-CSF mRNAs of various sizes occur. Full length human M-CSF transcripts encode a 522 amino acid (aa) type I transmembrane (TM) protein with a 464 aa extracellular region, a 21 aa TM domain, and a 37 aa cytoplasmic tail that forms a 140 kDa covalent dimer. Differential processing produces two proteolytically cleaved, secreted dimers. One is an N- and O- glycosylated 86 kDa dimer, while the other is modified by both glycosylation and chondroitin-sulfate proteoglycan (PG) to generate a 200 kDa subunit. Although PG-modified M-CSF can circulate, it may be immobilized by attachment to type V collagen. Shorter transcripts encode M-CSF that lack cleavage and PG sites and produce an N-glycosylated 68 kDa TM dimer and a slowly produced 44 kDa secreted dimer. Although forms may vary in activity and half-life, all contain the N-terminal 150 aa portion that is necessary and sufficient for interaction with the M-CSF receptor. The first 223 aa of mature human M-CSF shares 88%, 86%, 81% and 74% aa identity with corresponding regions of dog, cow, mouse and rat M-CSF, respectively. Human M-CSF is active in the mouse, but mouse M-CSF is reported to be species-specific.

Bioinformatics

• Uniprot:
  • NP_757350()