| Field | Specification |
|---|---|
| Biological Activity | |
| Endotoxin Level | |
| Formulation | |
| Molecular Weight | |
| Product Type | |
| Purity | |
| Reconstitution | |
| Source | CHO |
| Storage |
Scientific Background
Thrombopoietin (TPO), also known as c-Mpl ligand, MGDF and THOP, is a glycoprotein hormone belonging to the EPO/TPO family. It is expressed mainly in the liver, kidney and skeletal muscle. TPO binds and signals through c-Mpl receptor. It stimulates the proliferation and maturation of megakaryocytes from their committed progenitor cells, and it regulates the production and circulation of platelets. TPO has also been reported to promote apoptosis of hypoxia-sensitized neurons and to inhibit neuronal differentiation.Recombinant Rat Thrombopoietin(TPO), His, produced in CHO cells is a polypeptide chain containing 174 amino acids.
Product Description
Mammalian (CHO Cells) ExpressionRecombinant TPO,His Rat protein is produced using a validated Mammalian (CHO Cells) expression system and supplied as lyophilized powder for long-term stability. Suitable for use in functional bioassays, ELISA standard curves, receptor binding studies, antibody validation, and related research applications.
Protein Specifications
| Expression System | Mammalian (CHO Cells) |
|---|---|
| Molecular Weight | 22 kDa, observed by reducing SDS-PAGE. |
| Purity | > 98% as analyzed by SDS-PAGE. |
| Endotoxin | < 0.2 EU/μg, determined by LAL method. |
| Physical Form | Sterile Filtered White lyophilized (freeze-dried) powder. |
| Formulation | Lyophilized after extensive dialysis against PBS. |
| Reconstitution | Reconstituted in ddH2O or PBS at 100 μg/ml. |
| Storage | Lyophilized recombinant Rat Thrombopoietin remains stable up to 6 months at -80°C from date of recei… |
Functional Activity
The ED50 as determined by the dose-dependent stimulation of the proliferation of human MO7e cells was found to be ≤ 0.2 ng/ml, corresponding to a specific activity of ≥ 5 x 10ˆ6 units/mg.
Safety & Handling
This material is offered by USA Bioworld biotech for research, laboratory or further evaluation purposes. For research use only.
This protein was produced in Mammalian (CHO Cells) expression system. Expression system selection determines glycosylation profile, folding, and post-translational modifications. For cell-based stimulation assays, verify the expression system matches the glycosylation requirements of your target receptor or pathway.
Reconstituted in ddH2O or PBS at 100 μg/ml. Reconstitute in sterile distilled water or PBS at 100 µg/mL as a standard starting concentration. Allow to dissolve at 4°C for 30 minutes without vortexing. Prepare working aliquots in 0.1% BSA carrier protein and store at −80°C.
This protein has been validated for functional bioactivity: The ED50 as determined by the dose-dependent stimulation of the proliferation of human MO7e cells was found to be ≤ 0.2 ng/ml, corresponding to a specific activity of ≥ 5 x 10ˆ6 units/mg.. Optimal working concentrations may vary depending on your cell type, assay format, and culture conditions. Titrate the protein in a dose-response experiment to determine the optimal concentration for your system.
Endotoxin level is < 0.2 EU/μg, determined by LAL method. as determined by the LAL method. Low endotoxin is critical for cell-based studies because endotoxin activates NF-κB and TLR4 signalling in immune cells, producing artefactual cytokine induction that can completely mask the true biological activity of the recombinant protein.
Lyophilized recombinant Rat Thrombopoietin remains stable up to 6 months at -80°C from date of receipt. Upon reconstitution, Rat Thrombopoietin should be stable up to 1 week at 4°C or up to 2 months a Upon receipt, immediately store at −80°C. Prepare single-use working aliquots to avoid repeated freeze-thaw cycles. Lyophilized protein is stable for 6–12 months at −80°C from the date of receipt.
BioHippo offers flexible sourcing options for qualified research institutions and partners. The following may be available subject to supplier capabilities and order volume.
- Custom quantities: Bulk pricing or non-standard sizes available for high-throughput screening or scale-up projects.
- Custom formulation: Alternative reconstitution buffers or carrier proteins may be accommodated on request.
- Extended QC data: Additional bioactivity assay data, endotoxin reports, or SEC-HPLC purity profiles available on request.
Contact BioHippo customer support to discuss your requirements.
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