Recombinant Human MSP/MST1 Protein

Catalog # 352-MS | R&D Systems, Inc. a Bio-Techne Brand
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Carrier Free
352-MS-010/CF
352-MS-050/CF
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With Carrier
352-MS-010
352-MS-050
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Key Product Details

Accession #

AAA59872

Source

NS0

Structure / Form

Disulfide-linked heterodimer

Conjugate

Unconjugated

Applications

Bioactivity

Product Specifications

Source

Mouse myeloma cell line, NS0-derived human MSP/MST1 protein
Gln19-Gly711

Purity

>97%, by SDS-PAGE under reducing conditions and visualized by silver stain.

Endotoxin Level

<1.0 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis

No results obtained, Gln19 predicted & Val484

Predicted Molecular Mass

78.5 kDa (MSP alpha/ beta); 53.3 kDa ( alpha chain), 25.2 kDa ( beta chain)

SDS-PAGE

81 kDa, 62 kDa and 30 kDa, reducing conditions

Activity

Measured by its ability to activate MSP R/Ron in MDA-MB-453 or T47D human breast cancer cells.
80 ng/mL of the recombinant human MSP significantly induces phosphorylation of MSP R/Ron measured by DuoSetIC human phospho-MSP R/Ron kit (Catalog # DYC1947).

Measured by its binding ability in a functional ELISA.
When Recombinant Human MSPR/Ron Protein (Catalog #1947-MS) is represent at 100 ng/mL (100 µg/mL), The concentration of Recombinant Human MSP/MST1 that produces 50% optimal binding response is found to be 8-40 ng/mL.

Formulation, Preparation and Storage

Carrier Free
What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.

Carrier: 352-MS
Formulation Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.
Reconstitution Reconstitute at 100 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
Carrier Free: 352-MS/CF
Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution Reconstitute at 100 μg/mL in sterile PBS.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: MSP/MST1

Macrophage stimulating protein (MSP), also known as HGF-like protein, and scatter factor-2, is a member of the HGF family of growth factors (1). MSP is secreted as an inactive single chain precursor (pro-MSP) that contains a PAN/APPLE-like domain, four kringle domains, and a peptidase S1 domain which lacks enzymatic activity (2). Human MSP shares 79% aa sequence identity with mouse MSP and 44% aa sequence identity with human HGF. Pro-MSP is secreted by hepatocytes under the positive and negative control of CBP in complex with either HNF-4 or RAR, respectively (3). Circulating pro-MSP is proteolytically cleaved in response to tissue injury to yield biologically active disulfide linked heterodimers consisting of a 45 - 62 kDa alpha and a 25-35 kDa beta chain (4, 5). Pro-MSP can be activated by MT-SP1, a transmembrane protease that is expressed on macrophages and is upregulated in many cancers (6). Heterodimeric MSP as well as the isolated beta chain bind to MSP R/Ron with high-affinity, although only heterodimeric MSP can induce receptor dimerization and signaling (7, 8). MSP induces macrophage and keratinocyte proliferation and osteoclast activation (9, 10). It also inhibits LPS- or IFN-induced iNOS and IL-12 expression by macrophages and prevents apoptosis of epithelial cells separated from the ECM (11, 12).

References

  1. Wang, M.-H. et al. (2002) Scand. J. Immunol. 56:545.
  2. Han, S. et al. (1991) Biochemistry 30:9768.
  3. Muraoka, R.S. et al. (1999) Endocrinology 140:187.
  4. Wang, M.-H. et al. (1996) J. Clin. Invest. 97:720.
  5. Nanney, L.B. et al. (1998) J. Invest. Dermatol. 111:573.
  6. Bhatt, A.S. et al. (2007) Proc. Natl. Acad. Sci. 104:5771.
  7. Wang, M.-H. et al. (1997) J. Biol. Chem. 272:16999.
  8. Danilkovitch, A. et al. (1999) J. Biol. Chem. 274:29937.
  9. Wang, M.-H. et al. (1996) Exp. Cell Res. 226:39.
  10. Kurihara, N. et al. (1998) Exp. Hematol. 26:1080.
  11. Morrison, A.C. et al. (2004) J. Immunol. 172:1825.
  12. Liu, Q.P. et al. (1999) J. Immunol. 163:6606.

Long Name

Macrophage Stimulating Protein/Macrophage Stimulating 1 [Hepatocyte Growth Factor-like]

Alternate Names

HGFL, MST1, SF2

Entrez Gene IDs

4485 (Human); 15235 (Mouse); 24566 (Rat)

Gene Symbol

MST1

UniProt

AAA59872

Product Documents for Recombinant Human MSP/MST1 Protein

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Note: Certificate of Analysis not available for kit components.

Download SDS 352-MS (with carrier)
Download SDS 352-MS/CF (carrier free)

Product Specific Notices for Recombinant Human MSP/MST1 Protein

For research use only

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  • Recombinant Human MSP/MST1 Protein
    Name: Anonymous
    Application: Immunoassay Standard
    Verified Customer | Posted 09/23/2019
    We used this protein for developing an ELISA in combination with mAb (MAB352) and pAb (AF352). This combination worked well and detected human MSP in serum samples efficiently.
    Recombinant Human MSP/MST1 Protein 352-MS

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