Carfilzomib (PR-171)

Catalog No.S2853

Carfilzomib (PR-171) Chemical Structure

Molecular Weight(MW): 719.91

Carfilzomib (PR-171) is an irreversible proteasome inhibitor with IC50 of <5 nM in ANBL-6 cells, displayed preferential in vitro inhibitory potency against the ChT-L activity in the β5 subunit, but little or no effect on the PGPH and T-L activities.

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In DMSO USD 476 In stock
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3 Customer Reviews

  • Validation of activity and specificity of chemical inhibitors of; ATM, ATR, and DNAPK. H460 cells were treated with 1 uM camptothecin (CPT) or 20 ug/ml bleomycin for 1 h in the presence of the indicated inhibitors: DNAPK-i1—NU7026, DNAPK-i2—NU7441. MSH6,

    Sci Transl Med 2014 6(250), 250ra112. Carfilzomib (PR-171) purchased from Selleck.

    MM.1S cells were treated with or without carfilzomib (10 nM) in the presence or absence of TAS-117 (0.5 uM) for 24 h. Whole cell lysates were subjected to western blotting using CHOP, PARP, and GAPDH Abs.The graph represents fold changes of CHOP density relative to GAPDH.

    Cancer Res 2014 74(16), 4458-69. Carfilzomib (PR-171) purchased from Selleck.

  • Transduction at 24 h is indicated as normalized luciferase activity. HeLa cells were cotreated with 1 uM Carfilzomib and 500 vg/cell rAAV2-EGFP, and transduction was analyzed by flow cytometry at 24 h. Bright-field and EGPF fluorescence images at 24 h postransduction of cells visually indicating transduction.

    J Virol 2013 87(23), 13035-41. Carfilzomib (PR-171) purchased from Selleck.

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Biological Activity

Description Carfilzomib (PR-171) is an irreversible proteasome inhibitor with IC50 of <5 nM in ANBL-6 cells, displayed preferential in vitro inhibitory potency against the ChT-L activity in the β5 subunit, but little or no effect on the PGPH and T-L activities.
Proteasome [1]
(ANBL-6 cells)
5 nM
In vitro

Carfilzomib inhibits proliferation in a variety of cell lines and patient-derived neoplastic cells, including multiple myeloma, and induced intrinsic and extrinsic apoptotic signaling pathways and activation of c-Jun-N-terminal kinase (JNK). Carfilzomib reveals enhanced anti-MM activity compared with bortezomib, overcome resistance to bortezomib and other agents, and acts synergistically with dexamethasone (Dex). Carfilzomib shoes preferential in vitro inhibitory potency against the ChT-L activity in the β5 subunit, with over 80% inhibition at doses of 10 nM. Short exposure to low-dose Carfilzomib leads to preferential binding specificity for the β5 constitutive 20S proteasome and the β5i immunoproteasome subunits. Measurement of caspase activity in ANBL-6 cells pulsed with Carfilzomib reveals substantial increases in caspase-8, caspase-9, and caspase-3 activity after 8 hours, giving a 3.2-, 3.9- and 6.9-fold increase, respectively, over control cells after 8 hours. In carfilzomib pulse-treated cells, the mitochondrial membrane integrity is decreased to 41% (Q1 + Q2), compared with 75% in vehicle-treated control cells. [1] In another study, Carfilzomib has also shown preclinical effectiveness against hematological and solid malignancies. [2] Carfilzomib directly inhibits osteoclasts formation and bone resorption. [3]

Cell Data
Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID
MM.1S M4j0eWdzd3e2aDDJcohq[mm2aX;uJGF{e2G7 M4P5XFAuOTByIH7N Mk[yOFghcA>? MnTpTWM2OMLiPdMgNVAhdk1? MWKyOVMyOjV2Mx?=
NCI-H929  M3W5dmdzd3e2aDDJcohq[mm2aX;uJGF{e2G7 MnjuNE0yODBibl2= NHezdYk1QCCq M3r4SWlEPTBiPdMgNVQhdk1? M{nvS|I2OzF{NUSz
SUDHL16  M1viU2Fxd3C2b4Ppd{BCe3O|YYm= MknSNk426oDVMz61JI5O Mn\IOFghcA>? MljU[Y5p[W6lZYOgeIhmKGOnbHyg[IVifGhiY3:teJJm[XSvZX70JJdqfGhiQVPZNVIyPQ>? NFq2PG0zPTJ|OUmzOS=>
SUDHL14 MVLBdI9xfG:|aYOgRZN{e2G7 MUiyMlXjiJN|LkWgcm0> M2LIcVQ5KGh? MV7lcohidmOnczD0bIUh[2WubDDk[YF1cCClbz30doVifG2nboSge4l1cCCDQ2mxNlE2 M1LH[FI2OjN7OUO1
U2932 NY\nbJJwSXCxcITvd4l{KEG|c4PhfS=> MYSyMlXjiJN|LkWgcm0> MmrZOFghcA>? NYT3dZJ1\W6qYX7j[ZMhfGinIHPlcIwh\GWjdHigZ48ufHKnYYTt[Y51KHerdHigRWN[OTJzNR?= M{DLNVI2OjN7OUO1
R-UMSCC-1 NFjqVZRIem:5dHigTY5pcWKrdHnvckBCe3OjeR?= M2fsdmlEPTB;MkK5OEBvVQ>? NWH5THFFOjR7MUWwN|k>
P-Cal33 MVjHdo94fGhiSX7obYJqfGmxbjDBd5NigQ>? Ml3iTWM2OD1zNz6zJI5O NYPhVYZoOjR7MUWwN|k>
R-Cal33 NUXGe2VwT3Kxd4ToJGlvcGmkaYTpc44hSXO|YYm= MWjJR|UxRTFzMUKgcm0> M{i1c|I1QTF3MEO5
Jurkat MonMS5Jwf3SqIFnubIljcXSrb36gRZN{[Xl? M3WwbVEuOTGwTR?= M1XBcFQ5KGh? MlLibY5pcWKrdIOgeIhmKGOnbHygdJJwdGmoZYLheIlwdiClbz30doVifG2nboSge4l1cCC4b4Lpco9{fGG2 MWmyOFgxOTF{OB?=
Jurkat MUPBdI9xfG:|aYOgRZN{e2G7 NF7XNXg5KG6P MnPBNlQwPDhiaB?= NYLlVWNwcW6mdXPld{BieG:ydH;zbZMtKGOjc4Dhd4Uh[WO2aY\heIlwdixiYX7kJHBCWlBiY3zlZZZi\2ViY3:teJJm[XSvZX70JJdqfGhidn;ybY5we3SjdB?= MnrsNlQ5ODFzMki=
UMSCC-22A NYPz[HhWSXCxcITvd4l{KEG|c4PhfS=> MYSyNFAhdk1? NHyxXoUzPCCq M172colv\HWlZTD0bIUh[2WubDDhdI9xfG:|aYOgZ48ufHKnYYTt[Y51KHerdHigU25ZKDB7MUK= MX2yNlkzQThyMx?=
1483 MX;BdI9xfG:|aYOgRZN{e2G7 NHr0TlYzODBibl2= MmftNlQhcA>? NFLxTZJqdmS3Y3WgeIhmKGOnbHygZZBweHSxc3nzJINwNXS{ZXH0cYVvfCC5aYToJG9PYCByOUGy NXTwTGNXOjJ7Mkm4NFM>
UMSCC-1 M2nWVGFxd3C2b4Ppd{BCe3O|YYm= MV2yNFAhdk1? M{LleFI1KGh? NEDTbnlqdmS3Y3WgeIhmKGOnbHygZZBweHSxc3nzJINwNXS{ZXH0cYVvfCC5aYToJG9PYCByOUGy MoTENlI6Ojl6MEO=
UMSCC-22A NYTqdYNtT3Kxd4ToJGlvcGmkaYTpc44hSXO|YYm= NVuzbFJrUUN3ME2zPE44KMLzIEGuNEBvVQ>? MVqyNlkzQThyMx?=
UMSCC-22B M{TtTmdzd3e2aDDJcohq[mm2aX;uJGF{e2G7 NFr6[ZdKSzVyPUOwMlchyrFiOT6zJI5O MnzLNlI6Ojl6MEO=
1483 MUXHdo94fGhiSX7obYJqfGmxbjDBd5NigQ>? MY\JR|UxRTVyLkWgxtEhOTFwOTDuUS=> MWmyNlkzQThyMx?=
UMSCC-1 NEXlUItIem:5dHigTY5pcWKrdHnvckBCe3OjeR?= MlzMTWM2OD1|ND62JOKyKDJwNjDuUS=> MXiyNlkzQThyMx?=
Cal33 NGTrUotIem:5dHigTY5pcWKrdHnvckBCe3OjeR?= MmLuTWM2OD12OT6zJOKyKDhwOTDuUS=> NEfHR2kzOjl{OUiwNy=>
PCI-15A Mn3RS5Jwf3SqIFnubIljcXSrb36gRZN{[Xl? MU\JR|UxRTdyLkSgxtEhOjJwNjDuUS=> NW\3[ZdYOjJ7Mkm4NFM>
PCI-15B NXu4N|JIT3Kxd4ToJGlvcGmkaYTpc44hSXO|YYm= NF\mc2pKSzVyPUO5MlUhyrFiMUGuNEBvVQ>? NWfSb5g3OjJ7Mkm4NFM>
OSC-19 NFvldYtIem:5dHigTY5pcWKrdHnvckBCe3OjeR?= NVHXUFd7UUN3ME2xPE4{KMLzIESuNkBvVQ>? NVL3PGE3OjJ7Mkm4NFM>
SUDHL16 M{XmNmFxd3C2b4Ppd{BCe3O|YYm= MWOyMlAuPC5yIH7N MlrTOFghcA>? M3PNdIlv\HWlZYOgZ4VtdCCmZXH0bEBkdy22cnXheI1mdnRid3n0bEBw[mG2b3PsZZg> NXvodoVHOjJ2MUG4PVk>
SUDHL16 MnnMSpVv[3Srb36gRZN{[Xl? M13C[VIvPSCwTR?= NHHESW8zPCCq NYPodmJt[WO2aY\heIV{KEqQSzygbY5i[3SrdnH0[ZMhSUuWLDD1dE1z\We3bHH0[ZMhVm:6YTygZY5lKGmwZIXj[ZMh|rOKMlGuXEBkdy22cnXheI1mdnRid3n0bEBw[mG2b3PsZZg> M1\vNFIzPDFzOEm5
Granta NGSzPXBIem:5dHigTY5pcWKrdHnvckBCe3OjeR?= MnTLNE01KG6P MWO0PEBp NEGyZ|VqdmS3Y3WgZ4VtdCCmZXH0bEBkdy22cnXheI1mdnRid3n0bEBJSUSFSYO= NYjORZFkOjF5NUCyNlQ>
SUDHL16 NUjXd4ZnT3Kxd4ToJGlvcGmkaYTpc44hSXO|YYm= MYexMVQhdk1? MXqzOkBp NIfwZ4dqdmS3Y3WgZ4VtdCCmZXH0bEBkdy22cnXheI1mdnRid3n0bEBJSUSFSYO= NF7BfZkzODJ|M{m3Ny=>

... Click to View More Cell Line Experimental Data

In vivo Carfilzomib moderately reduces tumor growth in an in vivo xenograft model. Carfilzomib effectively decreases multiple myeloma cell viability following continual or transient treatment mimicking. Carfilzomib increases trabecular bone volume, decreases bone resorption and enhances bone formation in non-tumor bearing mice. [3]


Kinase Assay:[1]
+ Expand

Enzyme-linked immunosorbent assay for subunit profiling of carfilzomib:

ANBL-6 cells (2 × 106/well) are plated in 96-well plates and treated with Carfilzomib doses from 0.001 to 10 μM for 1 hour. Cells are then lysed (20 mM Tris-HCl, 0.5 mM EDTA), and cleared lysates are transferred to polymerase chain reaction (PCR) plates. A standard curve is generated using untreated ANBL-6 cell lysates starting at a concentration of 6 μg protein/μL. The active site probe [biotin-(CH2)4-Leu-Leu-Leu-epoxyketone; 20 μM] is added and incubated at room temperature for 1 hour. Cell lysates are then denatured by adding 1% sodium dodecyl sulfate (SDS) and heating to 100°C, followed by mixing with 20 μL per well streptavidin-sepharose high-performance beads in a 96-well multiscreen DV plate and incubated for 1 hour. These beads are then washed with enzyme-linked immunosorbent assay (ELISA) buffer (PBS, 1% bovine serum albumin, and 0.1% Tween-20), and incubated overnight at 4°C on a plate shaker with antibodies to proteasome subunits. Antibodies used included mouse monoclonal anti-β1, anti-β2, anti-β1i, and anti-β5i, goat polyclonal anti-β2i, and rabbit polyclonal anti-β5 (affinity-purified antiserum against KLH-CWIRVSSDNVADLHDKYS peptide). The beads are washed and incubated for 2 hours with horseradish peroxidase-conjugated secondary goat antirabbit, goat antimouse or rabbit antigoat antibodies. After washing, the beads are developed using the supersignal ELISA picochemiluminescence substrate. Luminescent detection is performed. Raw luminescence is converted to μg/mL by comparison with the standard curve and expressed as the % inhibition relative to vehicle control. Curve fits are generated using the following nonsigmoidal dose-response equation: Y = Bottom + (Top-Bottom)/(1 + 10̂((LogEC50 − X) × HillSlope)), where X is the logarithm of concentration, Y is the % inhibition, and EC50 is the dose showing 50% effect.
Cell Research:[1]
+ Expand
  • Cell lines: WST-1, ANBL-6 cells
  • Concentrations: 100 nM
  • Incubation Time: 1 hour
  • Method: WST-1 is used to determine the effects of proteasome inhibitor Carfilzomib on cell proliferation. The inhibition of proliferation is calculated in relation to parallel control cells that receives vehicle alone. A linear spline function is used to interpolate the median inhibitory concentration (IC50) using XLfit 4 software. The degree of resistance (DOR) is calculated using the formula: DOR = IC50(resistant cells)/IC50(sensitive cells). ANBL-6 cells pulsed with 100 nM carfilzomib are washed and suspended in PBS containing 5 μg/mL of JC-1, which exhibits potential-dependent accumulation in mitochondria. Analysis of the mitochondrial membrane potential-dependent color shift from 525 to 590 nm is carried out on a FacScan, and the data are analyzed with CellQuest software.
    (Only for Reference)
Animal Research:[4]
+ Expand
  • Animal Models: Beige-nude-XID mice
  • Formulation: 10% sulfobutylether β-cyclodextrin in 10 mmol/L citrate buffer pH 3.5,
  • Dosages: 2.0 mg/kg
  • Administration: i.v.
    (Only for Reference)

Solubility (25°C)

In vitro DMSO 50 mg/mL (69.45 mM)
Water Insoluble
Ethanol Insoluble
In vivo Add solvents individually and in order:
2% DMSO+30% PEG 300+2%Tween 80+ddH2O

* 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.

Chemical Information

Molecular Weight 719.91


CAS No. 868540-17-4
Storage powder
Synonyms N/A

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Clinical Trial Information

NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT02802163 Not yet recruiting Multiple Myeloma H. Lee Moffitt Cancer Center and Research Institute|Novartis|Amgen April 30, 2017 Phase 1|Phase 2
NCT01402284 Active, not recruiting Multiple Myeloma National Cancer Institute (NCI)|Celgene|Onyx Therapeutics, Inc.|National Institutes of Health Clinical Center (CC) July 21, 2011 Phase 2
NCT03031730 Not yet recruiting Hypercalcemia|Plasmacytoma|Recurrent Plasma Cell Myeloma|Refractory Plasma Cell Myeloma National Cancer Institute (NCI) October 2017 Phase 1
NCT03029234 Not yet recruiting Relapsed and Refractory Multiple Myeloma Amgen|Onyx Therapeutics, Inc. February 2017 Phase 3
NCT02891811 Not yet recruiting Multiple Myeloma Arbeitsgemeinschaft medikamentoese Tumortherapie|Amgen January 2017 Phase 2
NCT03004287 Not yet recruiting Multiple Myeloma University of Arkansas|Janssen, LP January 2017 Phase 2

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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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Frequently Asked Questions

  • Question 1:

    How should I prepare solution of Carfilzomib for ongoing in vivo study?

  • Answer:

    This compound can be dissolved in 2% DMSO/30% PEG 300/dd H2O at 10 mg/ml as a suspension, and can be dissolved in 2% DMSO/ castor oil at 10 mg/ml as a clear solution.

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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID