| Field | Specification |
|---|---|
| Target | |
| Alternative names | Dipeptidyl peptidase 4;3.4.14.5 ;Dipeptidyl peptidase IV;DPP IV;T-cell activation antigen CD26;Thymocyte-activating molecule;THAM;CD26;Dipeptidyl peptidase 4 membrane form;Dipeptidyl peptidase IV membrane form;Dipeptidyl peptidase 4 soluble form;Dipeptidyl peptidase IV soluble form;Dpp4;Cd26; |
| Gene ID | |
| UniProt # | |
| Reactivity | |
| Applications | |
| Immunogen | Expression system for standard: NS0; Immunogen sequence: S29-H760 |
| 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 mouse dipeptidyl peptidase 4 (gene Dpp4) 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.
Dipeptidyl peptidase 4 (DPP4, also called CD26) is a cell surface serine protease that cleaves dipeptides from peptides with proline or alanine at the second position. It inactivates incretin hormones such as GLP-1 and GIP, and it acts as a costimulatory molecule on T cells. DPP4 is the target of gliptin drugs for type 2 diabetes and the receptor for MERS coronavirus.
Kit Components
| Anti-Mouse Dpp4 Pre-coated 96-well strip microplate | 1 plate (96 wells) |
|---|---|
| Mouse Dpp4 Standard | 2 vials, 10 ng/tube |
| Mouse Dpp4 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 | Mouse |
|---|---|
| Sample types | Cell culture supernatants, cell lysates, serum and plasma (heparin, EDTA) |
| Assay range | 62.5 pg/mL–4,000 pg/mL |
| Sensitivity | <10 pg/mL |
| Standard | Recombinant mouse Dpp4 (Ser29–His760), expressed in NS0 |
| Cross-reactivity | None detected against related proteins in supplier testing |
| Intra-assay CV | 5.6–8.7% (3 samples, n = 16 each) |
| Inter-assay CV | 6.2–8.7% (3 samples, n = 24 each) |
| Format | 96 wells, removable strips |
Sample dilution: start at 1:1000. In the supplier’s tests, serum samples measured 127–204 ng/mL.
Example standard curve (OD450, pg/mL): 0 = 0.033; 62.5 = 0.105; 125 = 0.132; 250 = 0.216; 500 = 0.364; 1000 = 0.676; 2000 = 1.235; 4000 = 1.955. 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 | 62.5 | 125 | 250 | 500 | 1000 | 2000 | 4000 |
| O.D. | 0.033 | 0.105 | 0.132 | 0.216 | 0.364 | 0.676 | 1.235 | 1.955 |
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) | 116 | 722 | 1548 | 106 | 657 | 1599 |
| Standard deviation | 7.3 | 54.15 | 86.68 | 7.1 | 57.15 | 99.13 |
| CV (%) | 8.7% | 7.5% | 5.6% | 6.7% | 8.7% | 6.2% |
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.
Can’t Find What You’re Looking For? We can help you source the best match or customize an ELISA solution for your study. Options may include alternative target synonyms, different species reactivity, sample type/matrix compatibility (serum/plasma/lysate/supernatant), assay format (sandwich/competitive), sensitivity/range, detection chemistry (colorimetric/fluorescent/chemiluminescent), plate format (pre-coated/uncoated, strips vs full plate), and bulk or custom packaging. Click Talk to a Scientist to submit a request form, email us at support@biohippo.com, or explore our Research Services for additional support. Our team will be in contact with you shortly.
Tania Romacho et al. (2020) DPP4 deletion in adipose tissue improves hepatic insulin sensitivity in diet-induced obesity. American Journal of Physiology-Endocrinology and Metabolism. 10.1152/ajpendo.00323.2019
