| Field | Specification |
|---|---|
| Target | |
| Alternative names | Hepatocyte growth factor-like protein;Macrophage stimulatory protein;Macrophage-stimulating protein;MSP;Hepatocyte growth factor-like protein alpha chain;Hepatocyte growth factor-like protein beta chain;MST1;D3F15S2, DNF15S2, HGFL; |
| Gene ID | |
| UniProt # | |
| Reactivity | |
| Applications | |
| Immunogen | Expression system for standard: NS0; Immunogen sequence: Q19-G711 |
| Expression system | |
| Expression region | |
| Assay type | |
| Sample type(s) | Cell Culture Supernatant, Cell Lysate, Serum, Plasma |
| Sensitivity | |
| Detection range | |
| Assay time | |
| Storage | |
| Catalog no. (Mfr.) | |
| Main SKU |
Assay Principle
This sandwich ELISA quantifies human hepatocyte growth factor-like protein (gene MST1) in cell culture supernatants, cell lysates, serum and plasma (heparin, EDTA). Strips are pre-coated with a capture antibody. After the sample is added, a biotinylated detection antibody binds the captured protein, and an avidin–biotin–peroxidase complex supplies the enzyme. TMB develops color in proportion to the bound target; the reaction is stopped and read at 450 nm, and concentrations are read from the standard curve.
Macrophage-stimulating protein (MSP, encoded by MST1, also called hepatocyte growth factor-like protein) is a plasminogen-related growth factor made mainly by the liver and secreted as an inactive precursor. Once cleaved, it binds and activates the receptor tyrosine kinase RON (MST1R) to regulate macrophage activity, cell migration and epithelial responses. It is distinct from the Hippo pathway kinase also called MST1 (STK4).
Kit Components
| Anti-Human MST1 Pre-coated 96-well strip microplate | 1 plate (96 wells) |
|---|---|
| Human MST1 Standard | 2 vials, 10 ng/tube |
| Human MST1 Biotinylated antibody (100x) | 100 µL |
| Avidin-Biotin-Peroxidase Complex (100x) | 100 µL |
| Sample Diluent | 30 mL |
| Antibody Diluent | 12 mL |
| Avidin-Biotin-Peroxidase Diluent | 12 mL |
| Color Developing Reagent (TMB) | 10 mL |
| Stop Solution | 10 mL |
| Wash Buffer (25x) | 20 mL |
| Adhesive plate sealers | 4 |
Also required (not supplied): microplate reader for 450 nm; incubator; automated plate washer (optional); precision pipettes for 0.5 µL through 1 mL volumes of aqueous solutions; multichannel pipettes (recommended for many samples); deionized or distilled water; 500 mL graduated cylinders; test tubes for dilution.
Kit components are not sold separately.
Performance Data
| Species | Human |
|---|---|
| Sample types | Cell culture supernatants, cell lysates, serum and plasma (heparin, EDTA) |
| Assay range | 156 pg/mL–10,000 pg/mL |
| Sensitivity | <10 pg/mL |
| Standard | Recombinant human MST1 (Gln19–Gly711), expressed in NS0 |
| Cross-reactivity | None detected against related proteins in supplier testing |
| Intra-assay CV | 4.0–7.7% (3 samples, n = 16 each) |
| Inter-assay CV | 5.3–9.6% (3 samples, n = 24 each) |
| Format | 96 wells, removable strips |
Sample dilution: start at 1:100. In the supplier’s tests, serum samples measured 107–328 ng/mL.
Example standard curve (OD450, pg/mL): 0 = 0.036; 156 = 0.121; 312 = 0.183; 625 = 0.317; 1250 = 0.543; 2500 = 0.968; 5000 = 1.566; 10000 = 2.037. Run a new standard curve on every plate.
Storage & Handling
Store at 4 °C for up to 6 months or −20 °C for up to 12 months. Avoid repeated freeze–thaw cycles. Ships on gel ice and tolerates up to 3 days at room temperature; freeze on arrival.
Safety
Sample data
| Concentration (pg/ml) | 0 | 156 | 312 | 625 | 1250 | 2500 | 5000 | 10000 |
| O.D. | 0.036 | 0.121 | 0.183 | 0.317 | 0.543 | 0.968 | 1.566 | 2.037 |
Intra/inter assay consistency
| Intra-Assay Precision | Inter-Assay Precision | |||||
|---|---|---|---|---|---|---|
| Sample | 1 | 2 | 3 | 1 | 2 | 3 |
| n | 16 | 16 | 16 | 24 | 24 | 24 |
| Mean (pg/ml) | 250 | 1105 | 6318 | 245 | 1017 | 6055 |
| Standard deviation | 19.25 | 44.2 | 398.03 | 23.52 | 53.9 | 399.63 |
| CV (%) | 7.7% | 4% | 5.3%% | 9.6% | 5.3% | 6.6% |
Kit components
Description|Quantity Pre-coated 96-well strip microplate|1 Standard|2 vials Biotinylated antibody (100x)|100ul Avidin-Biotin-Peroxidase Complex (100x)|100ul Sample Diluent|30ml Antibody Diluent|12ml Avidin-Biotin-Peroxidase Diluent|12ml Color Developing Reagent (TMB)|10ml Stop Solution|10ml Wash Buffer (25x)|20ml Adhesive plate sealers|4Materials required but not provided
- Microplate Reader capable of reading absorbance at 450nm.
- Incubator.
- Automated plate washer (optional).
- Pipettes and pipette tips capable of precisely dispensing 0.5 µl through 1 ml volumes of aqueous solutions.
- Multichannel pipettes are recommended for large amount of samples.
- Deionized or distilled water.
- 500ml graduated cylinders.
- Test tubes for dilution.
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Isabel Brichette-Mieg et al. (2025) Discovery and early validation of serum protein signatures in untreated multiple sclerosis patients: identification of candidate biomarkers for diagnosis and stratification. Frontiers in Immunology. 10.3389/fimmu.2025.1579045
