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PCI-33380

Alias: PCI-33380; PCI 33380; PCI33380; BMS 790052; BMS-790052; BMS790052; EBP 883; EBP-883; EBP883
Cat No.:V4778 Purity: ≥98%
PCI-33380 is a novel and irreversible Bruton's Tyrosine Kinase (BTK) inhibitor that was designed based on the ibrutinib scaffold in combination with a fluorescent probe, and has been used in both cellular and in vivo studies that demonstrated the connection between the inhibitor binding event and phenotypic readouts of cellular responses due to the inhibition of Btk functions.
PCI-33380
PCI-33380 Chemical Structure CAS No.: 1022899-36-0
Product category: Btk
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
1mg
5mg
Other Sizes
Official Supplier of:
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Purity & Quality Control Documentation

Purity: ≥98%

Product Description
PCI-33380 is a novel and irreversible Bruton's Tyrosine Kinase (BTK) inhibitor that was designed based on the ibrutinib scaffold in combination with a fluorescent probe, and has been used in both cellular and in vivo studies that demonstrated the connection between the inhibitor binding event and phenotypic readouts of cellular responses due to the inhibition of Btk functions. The right drug dosage for patients has been determined in large part by the use of fluorescent probes in clinical trials.
PCI-33380 is an irreversible and selective Bruton's tyrosine kinase (BTK) inhibitor that functions as a fluorescent probe. It was designed based on the ibrutinib (PCI-32765) scaffold and has been used in both cellular and in vivo studies to demonstrate the connection between inhibitor binding and phenotypic readouts of cellular responses due to BTK inhibition.
Biological Activity I Assay Protocols (From Reference)
Targets
BTK
PCI-33380 targets Bruton's tyrosine kinase (BTK) with high selectivity and irreversible binding. The compound covalently binds to BTK, forming a stable inhibitor-enzyme complex. Its fluorescent properties, with excitation/emission wavelengths of 532/555 nm, allow for visualization and tracking of BTK in cells and tissues.
ln Vitro
PCI-33380 bound to Btk could be found using fluorescent gel scanning and denaturing gel electrophoresis[2].
In vitro, PCI-33380 specifically binds to BTK protein in B-cell lysates. The fluorescent probe allows for detection of BTK in cellular assays without the need for antibodies or other detection reagents. The compound's activity-based probe design enables the study of BTK occupancy, localization, and dynamics in living cells.
ln Vivo
In vivo, PCI-33380 has been used to study BTK engagement in animal models. The fluorescent probe allows for tracking of BTK inhibition and binding in tissues, providing a direct link between inhibitor binding and biological responses. This makes PCI-33380 a valuable tool for pharmacodynamic studies of BTK inhibitors.
Enzyme Assay
In vitro binding assays for PCI-33380 involve incubating the fluorescent probe with B-cell lysates or purified BTK protein. The binding of PCI-33380 to BTK is detected by fluorescence polarization or by measuring fluorescence intensity after gel electrophoresis. Competition assays with unlabeled BTK inhibitors are used to confirm specificity.
Cell Assay
Cell Line: Human B cells.
Concentration: 2 μM.
Incubation Time: 1 h.
Result: Found that 10 nM of PCI-32765 was sufficient to fully occupy the active site of Btk in primary B cells in culture by using the fluorescently tagged derivative PCI-33380.
Cellular assays are performed using B-cell lymphoma cell lines such as Ramos or other BTK-expressing cells. Cells are treated with PCI-33380 at various concentrations, and BTK binding is visualized by fluorescence microscopy or flow cytometry. The compound's ability to label BTK in living cells allows for real-time monitoring of BTK localization and dynamics.
Animal Protocol
In vivo studies are conducted in mouse models of B-cell malignancies. PCI-33380 is administered intravenously or intraperitoneally, and tissues are collected for fluorescence imaging. BTK engagement and inhibition are assessed by measuring fluorescence intensity in tissues, and the correlation between inhibitor binding and biological responses is evaluated.
ADME/Pharmacokinetics
PCI-33380 (molecular weight 855.78, formula C₄₆H₅₂BF₂N₁₁O₃) is a fluorescent probe based on the ibrutinib scaffold. It has excitation/emission wavelengths of 532/555 nm, which are compatible with standard fluorescence detection systems. The compound is cell-permeable and can be used for live-cell imaging applications.
Toxicity/Toxicokinetics
Preclinical toxicity studies of PCI-33380 have been limited, as the compound is primarily used as a research tool. No significant toxicity has been reported at the concentrations used for imaging studies. The compound's safety profile supports its use as a fluorescent probe for BTK research.
References

[1]. A novel 2,5-diaminopyrimidine-based affinity probe for Bruton's tyrosine kinase. Sci Rep. 2015 Nov 4;5:16136.

[2]. The Bruton tyrosine kinase inhibitor PCI-32765 blocks B-cell activation and is efficacious in models of autoimmune disease and B-cell malignancy. Proc Natl Acad Sci U S A. 2010 Jul 20;107(29):13075-80.

Additional Infomation
PCI-33380 is an irreversible, selective BTK inhibitor that functions as an activity-based fluorescent probe. It was designed based on the ibrutinib scaffold and has been used to demonstrate the connection between BTK inhibitor binding and phenotypic responses. The compound is cell-permeable and suitable for live-cell imaging of BTK in cancer cells. PCI-33380 is primarily used for research purposes and has not received regulatory approval for clinical use.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C46H52BF2N11O3
Molecular Weight
855.800
Exact Mass
855.43
Elemental Analysis
C, 64.56; H, 6.12; B, 1.26; F, 4.44; N, 18.00; O, 5.61
CAS #
1022899-36-0
Related CAS #
1022899-36-0
PubChem CID
168008660
Appearance
Dark-red to brown-red solid powder
Hydrogen Bond Donor Count
2
Hydrogen Bond Acceptor Count
12
Rotatable Bond Count
13
Heavy Atom Count
63
Complexity
1750
Defined Atom Stereocenter Count
0
SMILES
[B-]1(N2C(=CC(=C2C=C3[N+]1=C(C=C3)CCC(=O)NCCN4CCN(CC4)C/C=C/C(=O)N5CCCC(C5)N6C7=NC=NC(=C7C(=N6)C8=CC=C(C=C8)OC9=CC=CC=C9)N)C)C)(F)F
InChi Key
YUGFMNZIROEBNV-YRNVUSSQSA-N
InChi Code
InChI=1S/C46H52BF2N11O3/c1-32-28-33(2)58-40(32)29-36-15-14-35(59(36)47(58,48)49)16-19-41(61)51-20-23-56-26-24-55(25-27-56)21-7-11-42(62)57-22-6-8-37(30-57)60-46-43(45(50)52-31-53-46)44(54-60)34-12-17-39(18-13-34)63-38-9-4-3-5-10-38/h3-5,7,9-15,17-18,28-29,31,37H,6,8,16,19-27,30H2,1-2H3,(H,51,61)(H2,50,52,53)/b11-7+
Chemical Name
N-[2-[4-[(E)-4-[3-[4-amino-3-(4-phenoxyphenyl)pyrazolo[3,4-d]pyrimidin-1-yl]piperidin-1-yl]-4-oxobut-2-enyl]piperazin-1-yl]ethyl]-3-(2,2-difluoro-10,12-dimethyl-1-aza-3-azonia-2-boranuidatricyclo[7.3.0.03,7]dodeca-3,5,7,9,11-pentaen-4-yl)propanamide
Synonyms
PCI-33380; PCI 33380; PCI33380; BMS 790052; BMS-790052; BMS790052; EBP 883; EBP-883; EBP883
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
DMSO: ≥ 50 mg/mL (~58.4 mM)
Solubility (In Vivo)
Solubility in Formulation 1: ≥ 2.5 mg/mL (2.92 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL.
Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution.

Solubility in Formulation 2: ≥ 2.5 mg/mL (2.92 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly.
Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 1.1685 mL 5.8425 mL 11.6850 mL
5 mM 0.2337 mL 1.1685 mL 2.3370 mL
10 mM 0.1168 mL 0.5842 mL 1.1685 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.

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Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
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In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution 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 stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

Biological Data
  • Chemical structure of Btk inhibitors. Chemical structures of the irreversible Btk inhibitor PCI-32765, the irreversible Btk inhibitor PCI-33380 (probe), and the reversible Btk inhibitor PCI-29732. Proc Natl Acad Sci U S A . 2010 Jul 20;107(29):13075-80.
  • Selective irreversible targeting of Btk. (A–E) (Upper) Fluorescent gel scans of lysates from cells that were incubated with the affinity probe PCI-33380. Proc Natl Acad Sci U S A . 2010 Jul 20;107(29):13075-80
  • Orally-dosed PCI-32765 leads to sustained occupancy of Btk in dogs with lymphoma. PBMCs and biopsy specimens from affected lymph nodes (LN) were collected from dogs (Table 1) treated with PCI-32765 (oral capsule formulation). Tissue samples were then treated with PCI-33380 to determine Btk occupancy by PCI-32765. Shown are predose (P), 4 h, 24 h, and predose d 7 occupancy data for all available week 1 samples in the study. Proc Natl Acad Sci U S A . 2010 Jul 20;107(29):13075-80
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