Species: Human
Expression system: HEK 293
Purity: SDS-PAGE, > 95%
Endotoxin: protein < 0.2 EU/μg was determined by gel coagulation
Apparent molecular weight: 65~ 75kDa, reduced on SDS-PAGE
Storage and stability: After receiving, the product remains stable at temperatures below -70°C for up to 6 months. After recombination, the product should be stable at 4°C for 1 week or -20°C for 3 months. For long-term preservation, carrier protein (e.g. 0.1% BSA) is recommended. Avoid repeated freeze-thaw cycles.
Bioactivity: 5.0 μg/ mL (100 μ L/well) immobilized human IL-2 can bind to CD25/IL-2Rα, hFc and human IL-2Rα. Activation T cells, regulatory T cells (Tregs) and NK cells expressed CD25 at high levels, and the expression of high-affinity IL-2Rα was mainly confined to these cell populations. The il-2R α signaling pathway mediates a variety of biological processes in various cell populations, such as proliferation and differentiation of B cells and NK cells. A soluble form of IL-2Rα (IL-2Rα) is present in serum with increased expression on cells. The function of soluble IL-2Rα is unclear. Increased il-2R α levels in biological fluids have been reported to be associated with increased T and B cell activation and immune system activation. Serum il-2R α concentrations are elevated in many inflammatory processes and in some leukemias and lymphomas.
| Solubility (25°C) | It is recommended that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute the lyophilized powder in ddH₂O or PBS up to 100 μg/ml. |
| Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
| Species | Mouse | Rat | Rabbit | Guinea pig | Hamster | Dog |
| Weight (kg) | 0.02 | 0.15 | 1.8 | 0.4 | 0.08 | 10 |
| Body Surface Area (m2) | 0.007 | 0.025 | 0.15 | 0.05 | 0.02 | 0.5 |
| Km factor | 3 | 6 | 12 | 8 | 5 | 20 |
| Animal A (mg/kg) = Animal B (mg/kg) multiplied by | Animal B Km |
| Animal A Km |
For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.
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