Cinrebafusp alfa (Synonyms: PRS 343) |
| رقم الكتالوجGC74542 |
Cinrebafusp alfa (PRS 343) هو عقار مضاد للتيكالين ثنائي الصفاء ذو صلة عالية بـ CD137/HER2.
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Cas No.: 2218515-90-1
Sample solution is provided at 25 µL, 10mM.
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Cinrebafusp alfa (PRS 343) is a high affinity CD137/HER2 bispecfic anticalin-based drug. Cinrebafusp alfa binds to recombinant human HER2 (Kd=0.3 nM) and human monomeric CD137 (4-1BB; Kd=5 nM). Cinrebafusp alfa facilitates T-cell costimulation by tumor-localized, HER2-dependent 4-1BB clustering and activation, further enhancing T-cell receptor-mediated activity and leading to tumor destruction. Cinrebafusp alfa has the potential for HER2+ solid tumors research.
Cinrebafusp alfa (PRS 343) binds HER2-expressing MCF-7 cells with an EC50 of 7.4 nmol/L and binds to CHO cells transfected with human 4-1BB with an EC50 of 6.2 nmol/L in a FACS assay[1].
Cinrebafusp alfa (PRS 343; 0.2-10 mg/kg; IV; once weekly; for 20 day) leads to tumor growth inhibition and has a dose-dependent increase of tumor-infiltrating lymphocytes in a humanized mouse model engrafted with HER2-positive SK-OV-3 tumor cells[1]. Cinrebafusp alfa (10 mg/kg; IV; single dose) has the terminal elimination half-life of >14 days in male CD-1 mice. Cinrebafusp alfa (3 mg/kg; IV; single dose) has the terminal elimination half-life approximately 4 days in male cynomolgus monkeys[1].
References:
[1]. Marlon J Hinner, et al. Tumor-Localized Costimulatory T-Cell Engagement by the 4-1BB/HER2 Bispecific Antibody-Anticalin Fusion PRS-343. Clin Cancer Res. 2019 Oct 1;25(19):5878-5889.
[2]. G. Ku, et al. 525O A phase I dose escalation study of PRS-343, a HER2/4-1BB bispecific molecule, in patients with HER2-positive malignancies. ABSTRACT ONLY, VOLUME 31, SUPPLEMENT 4, S462-S463, SEPTEMBER 01, 2020.
| Cas No. | 2218515-90-1 | SDF | |
| المرادفات | PRS 343 | ||
| Formula | M.Wt | ||
| الذوبان | Storage | ||
| General tips | Please select the appropriate solvent to prepare the stock solution according to the
solubility of the product in different solvents; once the solution is prepared, please store it in
separate packages to avoid product failure caused by repeated freezing and thawing.Storage method
and period of the stock solution: When stored at -80°C, please use it within 6 months; when stored
at -20°C, please use it within 1 month. To increase solubility, heat the tube to 37°C and then oscillate in an ultrasonic bath for some time. |
||
| Shipping Condition | Evaluation sample solution: shipped with blue ice. All other sizes available: with RT, or with Blue Ice upon request. | ||
Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)
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Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )
Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O, mix and clarify.
Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.
Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such as vortex, ultrasound or hot water bath can be used to aid dissolving.
3. All of the above co-solvents are available for purchase on the GlpBio website.
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- Purity: >98.00%
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