EPO is predominantly synthesized and secreted by tubular and juxtatubular capillary, endothelial, and interstitial cells of the kidney. Approximately 10-15% of the total amount of Epo comes from extrarenal sources and is predominantly produced by hepatocytes and Kupffer cells of the liver. Approximately 40% of the molecular mass of Epo is due to its glycosylation. Glycosylation is an important factor determining the pharmacokinetic behavior of Epo in vivo. Non-glycosylated Epo has an extremely short biological half life. It still binds to its receptor and may even have a higher specific activity in vitro.
Aliases- Erythropoietin
- Recombinant Human Erythropoietin-Alpha (EPO)
Formulation- Lyophilized from a 0.2 µm filtered solution in PBS (pH 7)
Endotoxin Level- <1.0 EU/µg of recombinant protein as determined by the LAL method.
Storage Condition- The lyophilized protein is stable for at least one year from date of receipt at -70°C. Upon reconstitution, this cytokine can be stored in working aliquots at +2° to +8°C for one month, or at -20°C for six months, with a carrier protein without detectable loss of activity. Avoid repeated freeze/thaw cycles.