PSI
Based on 2 publication(s) in Google Scholar
PSI (Proteasome Inhibitor 1) is a potent proteasome inhibitor. PSI inhibits the proliferation of primary effusion lymphoma (PEL) cells. PSI has the potential for the research of Kaposi’s sarcoma-associated herpesvirus (KSHV) infection and KSHV-associated lymphomas.
For research use only. We do not sell to patients.
- Purity: 97.0%
- CAS No.: 158442-41-2
- Formula: C32H50N4O8
- Molecular Weight:618.76
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Storage:
Sealed storage, away from moisture.
Powder -80°C, 2 years , -20°C, 1 year* In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)
To place orders, for customer services and technical support, please contact: MedChemExpress USA
Tel: 609-228-6898 E-mail: [email protected] [email protected]
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Biological Activity
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Chemical Information
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Solvent & Solubility
- Purity & Documentation
- References
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Help & FAQs
Publications Citing Use of MedChemExpress (MCE) PSI
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Biological Activity
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Cell Line
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Type | Value | Description | References |
|---|---|---|---|---|
| PC-3 | IC50 |
375 nM
Compound: 3
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Antiproliferative activity against human PC3 cell line
Antiproliferative activity against human PC3 cell line
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[PMID: 16686537] |
PSI (24 h) inhibits the proliferation of primary effusion lymphoma (PEL) cells at low nanomolar concentrations (CC50s of 205, 190, 22.0, 53.0 nM FOR BJAB, Ramos, BC3, BCBL1 cells, respectively)[1].
PSI (50 nM; 6 h) increases caspase-3/7 activity by 8-fold compared with control[1].
PSI (50 nM; 6 h) decreases the transcriptional activity of NF-κB by 52%[1].
PSI (1, 5 nM; 3 days) inhibits the growth of BC3 cells at a high concentration (5 nM)[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Cell Line:BC3, BCBL1, Ramos, BJAB cells
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Concentration:
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Incubation Time:24 h
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Result:Inhibited the proliferation of primary effusion lymphoma (PEL) cells at low nanomolar concentrations (CC50s of 205, 190, 22.0, 53.0 nM FOR BJAB, Ramos, BC3, BCBL1 cells, respectively).
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Cell Line:HBL6 cells
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Concentration:50 nM
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Incubation Time:6 h
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Result:Decreased the NF-κB activity by 52%.
Chemical Information
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CAS No. 158442-41-2
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Appearance Solid
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Molecular Weight 618.76
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Formula C32H50N4O8
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Color White to off-white
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Synonyms
Proteasome Inhibitor 1; Z-Ile-Glu(OtBu)-Ala-Leu-CHO
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Sealed storage, away from moisture
Powder -80°C 2 years -20°C 1 year * In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)
Publications (2)
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Journal Impact Factor
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Most Recent
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Signal Transduct Target Ther
Selective depletion of tumor-associated SAMHD1 enhances chemotherapeutic efficacy and antitumor immune responses. [Abstract]2025 Dec 15;10(1):406. PMID: 41392286 -
Br J Pharmacol
Fenofibrate potentiates the therapeutic efficacy of EZH2 inhibitors on melanoma via TRIM21- and OTUD4-mediated EZH2 ubiquitination. [Abstract]2026 Jun;183(11):2675-2694. PMID: 41652905
Solvent & Solubility
H2O : < 0.1 mg/mL (adjust pH to 2 with Acetic acid) (insoluble)
Purity & Documentation
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Data Sheet (273 KB)
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SDS (252 KB)
- English - EN (252 KB)
- Français - FR (252 KB)
- Deutsch - DE (252 KB)
- Norwegian - NO (252 KB)
- Español - ES (252 KB)
- Swedish - SV (252 KB)
- Italian - IT (252 KB)
- Korean - KR (252 KB)
- Portuguese - PT (252 KB)
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Handling Instructions (2659 KB)
References
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
PSI Related Classifications
HY-P1258 Related Classifications
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