| Field | Specification |
|---|---|
| Target | |
| Alternative names | Neurotrophin-4;NT-4;Neurotrophin-5;NT-5;Neutrophic factor 4;NTF4;NTF5; |
| Gene ID | |
| UniProt # | |
| Reactivity | |
| Applications | |
| Immunogen | Expression system for standard: NS0; Immunogen sequence: G81-A210 |
| Expression system | |
| Expression region | |
| Assay type | |
| Sample type(s) | Cell Culture Supernatant, Serum |
| Sensitivity | |
| Detection range | |
| Assay time | |
| Storage | |
| Catalog no. (Mfr.) | |
| Main SKU |
Assay Principle
This sandwich ELISA quantifies human neurotrophin-4 (gene NTF4) in cell culture supernatants and serum. 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.
Neurotrophin-4 (NT-4, NTF4) is a secreted neurotrophin that signals mainly through the TrkB receptor, which it shares with BDNF. It acts as a survival factor for peripheral sensory and sympathetic neurons and is studied in neural development, neuron maintenance and synaptic function.
Kit Components
| Anti-Human NTF4 Pre-coated 96-well strip microplate | 1 plate (96 wells) |
|---|---|
| Human NTF4 Standard | 2 vials, 10 ng/tube |
| Human NTF4 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 and serum |
| Assay range | 31.2 pg/mL–2,000 pg/mL |
| Sensitivity | <10 pg/mL |
| Standard | Recombinant human NTF4 (Gly81–Ala210), expressed in NS0 |
| Cross-reactivity | None detected against related proteins in supplier testing |
| Intra-assay CV | 5.7–7.8% (3 samples, n = 16 each) |
| Inter-assay CV | 6.4–9.7% (3 samples, n = 24 each) |
| Format | 96 wells, removable strips |
Example standard curve (OD450, pg/mL): 0 = 0.031; 31.2 = 0.059; 62.5 = 0.085; 125 = 0.139; 250 = 0.277; 500 = 0.534; 1000 = 1.188; 2000 = 2.278. 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 | 31.2 | 62.5 | 125 | 250 | 500 | 1000 | 2000 |
| O.D. | 0.031 | 0.059 | 0.085 | 0.139 | 0.277 | 0.534 | 1.188 | 2.278 |
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) | 94 | 234 | 888 | 93 | 224 | 873 |
| Standard deviation | 6.01 | 13.33 | 69.26 | 7.8%5 | 15.45 | 84.68 |
| CV (%) | 6.4% | 5.7% | 7.8% | 6.4% | 6.9% | 9.7% |
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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Janneke G.F. Hogervorst et al. (2021) Gestational acrylamide exposure and biomarkers of fetal growth: Probing the mechanism underlying the association between acrylamide and reduced fetal growth. Environment International. 10.1016/j.envint.2021.106668
Mishra Biswa Ranjan et al. (2019) Effect of Sertraline, Dosulepin, and Venlafaxine on Non-BDNF Neurotrophins in Patients With Depression: A Cohort Study. Journal of Clinical Psychopharmacology. 10.1097/JCP.0000000000001022
