For research use only.
Catalog No.S2930 Synonyms: NSC 303580, PFTμ
Molecular Weight(MW): 181.21
Pifithrin-μ (NSC 303580, PFTμ) is a specific p53 inhibitor by reducing its affinity to Bcl-xL and Bcl-2, and also inhibits HSP70 function and autophagy.
Selleck's Pifithrin-μ has been cited by 10 publications
5 Customer Reviews
Effect of pifithrin-μ (the inhibitor of mitochondrial translocation of p53) on MEG3-induced apoptosis in TGF-β1-treated LX-2 cells. The inhibitor pifithrin-μ attenuated cleavage of caspase 3 which blocked apoptosis. The results are expressed as relative expression against control expression without treatment.
Biochim Biophys Acta 2014 1842(11), 2204-15. Pifithrin-μ purchased from Selleck.
CLL B cells were cultured alone or in the presence of 5, 10, and 15 μM pifithrin-m, and cell apoptosis was analyzed by the Annexin V/PI flow cytometric test. Histograms show the percentage of Annexin V-/PI- cells after 24 h of treatment. Data are reported as means ±SD and were normalized, 100% equal to the means ±SD calculated in the untreated patients (*p<0.01 between untreated [alone, 0] vs. pifithrin-μ treatment at 10 μM and 15 μM; paired Student's t test). Cytograms of the annexin V/PI test related to a representative case are reported. In all conditions, the total cell lysates were subjected to SDS/PAGE, transferred to a nitrocellulose membrane and were detected sequentially with anti-PARP to highlight the apoptosis, anti-HSP70, and anti-b-actin. Figure shows a representative case.
J Leukoc Biol, 2016, 100(5):1061-1070. Pifithrin-μ purchased from Selleck.
ALDOA overexpression triggered p53-dependent apoptosis in xenograft tumors. (c) Percentage of apoptotic cells in xenograft tumors formed by control cells or ALDOA-overexpressing cells in the presence or absence of p53. (d) Percentage of apoptotic cells in xenograft tumors formed by control cells or cells overexpressing ALDOA in mice treated with pifithrin-μ or vehicle control. **P<0.01.
Oncogene, 2018, 37(8):1041-1048. Pifithrin-μ purchased from Selleck.
(C, D) NP cells were subjected to compression for 48 h after pretreated with 10 μm PFT-u for 2 h or not. The PI uptake was determined by flow cytometry analysis (C). The cell death was determined by LDH release assay (D). Data are representative of three separate experiments. ###P < 0.001 vs. control; ∗∗P < 0.01,∗∗∗P < 0.001 vs. compression alone.
Biochem Biophys Res Commun, 2017, 487(1):181-188. Pifithrin-μ purchased from Selleck.
Purity & Quality Control
Choose Selective p53 Inhibitors
|Description||Pifithrin-μ (NSC 303580, PFTμ) is a specific p53 inhibitor by reducing its affinity to Bcl-xL and Bcl-2, and also inhibits HSP70 function and autophagy.|
Pifithrin-μ interferes with p53 binding to mitochondria and inhibits rapid p53-dependent apoptosis of primary cell cultures of mouse thymocytes in response to gamma radiation.  Pifithrin-μ, as an inhibitor of inducible HSP70, significantly inhibited cell viability with IC50 values ranging from 2.5 to 12.7 μM in acute myeloid leukemia (AML) and acute lymphoblastic leukemia (ALL) cell lines, as well as in primary AML blasts. Pifithrin-μ is also highly active in primary AML blasts with a median IC50 of 8.9 μ M(range 5.7-37.2 μ M) and induces apoptosis and cell cycle arrest in a dose-dependent fashion. In addition, Pifithrin-μ also increases the active form of caspase-3 and reduces AKT and ERK1/2 in NALM-6 cells.  Pifithrin-μ increases Annexin V(+) cells in both caspase-dependent and -independent manners and promotes TRAIL-induced apoptosis and arrested cancer cell growth. 
|In vivo||Pifithrin-μ (40 mg/kg, ip) produces protective effect from p53-dependent apoptosis in C57B1/6J mice of 8 or 9 Gy of total body gamma radiation.  In a xenograft mouse model, Pifithrin-μ significantly enhances the inhibition of TRAIL on MiaPaca-2 tumor growth. |
|In vitro||DMSO||36 mg/mL (198.66 mM)|
|In vivo||Add solvents to the product individually and in order(Data is from Selleck tests instead of citations):
2% DMSO+30% PEG 300+ddH2O
For best results, use promptly after mixing.
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
|Synonyms||NSC 303580, PFTμ|
In vivo Formulation Calculator (Clear solution)
|Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)|
|Dosage||mg/kg||Average weight of animals||g||Dosing volume per animal||ul||Number of animals|
|Step 2: Enter the in vivo formulation ()|
|% DMSO % % Tween 80 % ddH2O|
Working concentration： mg/ml；
Method for preparing DMSO master liquid: ： mg drug pre-dissolved in μL DMSO (Master liquid concentration mg/mL，)
Method for preparing in vivo formulation：Take DMSO master liquid, next addμL PEG300， mix and clarify, next addμL Tween 80，mix and clarify, next add μL ddH2O，mix and clarify.
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.
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Concentration (start) x Volume (start) = Concentration (final) x Volume (final)
This equation is commonly abbreviated as: C1V1 = C2V2 ( Input Output )
* When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and MSDS / COA (available online).
Molecular Weight Calculator
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Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.
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