Ontorpacept
Based on 1 publication(s) in Google Scholar
Ontorpacept (TTI-621) is a soluble fusion protein that consists of the human SIRPα N-terminal (1-118) linked to the Fc region of human IgG1. The N-terminal (1-118)-fragment of ontorpacept is a binding domain for CD47 which is an inhibitor of phagocytosis by macrophages. Ontorpacept is a CD47-blocking checkpoint inhibitor with antitumor activity.
For research use only. We do not sell to patients.
- Purity: 99.57%
- CAS No.: 2131089-46-6
- Molecular Weight:76.43 kDa
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Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
Publications Citing Use of MedChemExpress (MCE) Ontorpacept
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Biological Activity
Ontorpacept (0.001-1000 nmol/L; 2 h) dose-dependently increases macrophage phagocytosis of tumor cells with an average EC50 of 10 nmol/L in primary samples from patients with AML, MDS, multiple myeloma, B-ALL, and T-ALL[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:NOD.SCID mice with AML cell transplants[1]
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Dosage:8 mg/kg
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Administration:Intraperitoneal injection; 8 mg/kg, 3 times a week for 4 weeks
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Result:Significantly reduced the tumor growth in bone marrow and spleen.
| NCT Number | Sponsor | Condition | Start Date |
Phase
|
|---|---|---|---|---|
| NCT01329991 | Plexxikon| | 2011-05 | PHASE1 |
Unconjugated
The product can be reconstituted/diluted with sterile PBS or saline.
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Homo sapiens SIRPA (signal regulatory protein alpha, SHPS1, SIRP, SIRPalpha)-IGHG1 (Fc (Fragment constant)
ELISA, FACS, Functional assay
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Immobilized Ontorpacept can bind Human CD47 Protein (ECD, His Tag). The EC50 for this effect is 9.12 ng/mL.
Chemical Information
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CAS No. 2131089-46-6
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Appearance Liquid
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Molecular Weight 76.43 kDa
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Color Colorless to light yellow
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SMILES
[Ontorpacept]
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Synonyms
TTI-621
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Shipping
Shipping with dry ice.
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Formulation
Please refer to the lot-specific COA for specific buffer information.
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Storage
Please store the product under the recommended conditions in the Certificate of Analysis.
Publications (1)
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Journal Impact Factor
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Most Recent
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Transfusion
Anti-CD47 drug interference in pre-transfusion testing can be overcome by antigen masking. [Abstract]2025 Aug 13. PMID: 40799186
Purity & Documentation
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Data Sheet (260 KB)
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SDS (251 KB)
- English - EN (251 KB)
- Français - FR (251 KB)
- Deutsch - DE (251 KB)
- Norwegian - NO (251 KB)
- Español - ES (251 KB)
- Swedish - SV (251 KB)
- Italian - IT (251 KB)
- Korean - KR (251 KB)
- Portuguese - PT (251 KB)
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Inhibitory Antibodies User Guide (603 KB)
References
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)