Birinapant (TL32711), a bivalent Smac mimetic, is a potent antagonist for XIAP and cIAP1 with Kds of 45 nM and less than 1 nM, respectively. Birinapant (TL32711) induces the autoubiquitylation and proteasomal degradation of cIAP1 and cIAP2 in intact cells, which results in formation of a RIPK1: caspase-8 complex, caspase-8 activation, and induction of tumor cell death. Birinapant (TL32711) targets TRAF2-associated cIAPs and abrogates TNF-induced NF-κB activation.
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Birinapant Estructura química
No. CAS : 1260251-31-7
This product is a controlled substance and not for sale in your territory.
Western blot analysis of polyclonal pools of sgCtrl or sgTRAF2-expressing SK-MEL-23 melanoma cells in the presence or absence of Birinapant, and upon coculture with MART-1 T cell for indicated amounts of time.
Birinapant purchased from MedChemExpress. Usage Cited in:
Front Microbiol. 2018 Sep 19;9:2022.
[Abstract]
ACH-2 cells are exposed to Birinapant (50 nM) in the presence or absence of PEP005 (5 nM), with TNF-α (10 ng/ml) co-treatment for 24 h, and cell lysates are used for WB analysis.
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Descripciòn
Birinapant (TL32711), a bivalent Smac mimetic, is a potent antagonist for XIAP and cIAP1 with Kds of 45 nM and less than 1 nM, respectively. Birinapant (TL32711) induces the autoubiquitylation and proteasomal degradation of cIAP1 and cIAP2 in intact cells, which results in formation of a RIPK1: caspase-8 complex, caspase-8 activation, and induction of tumor cell death. Birinapant (TL32711) targets TRAF2-associated cIAPs and abrogates TNF-induced NF-κB activation.
IC50 & Target
Kd: 45 nM (XIAP), <1 nM (cIAP1)[1]
In Vitro
Birinapant (TL32711) (30-10000 nM; 24 hours) significantly decreases the viability of SUM190 cells in a dose-dependent manner[1]. ?
Birinapant (TL32711) (30-1000 nM; 4 hours) shows a significant decrease in cIAP1 levels and enhanced PARP cleavage, and induces apoptosis[1]. ?
Birinapant (TL32711) binds with high affinity to the isolated BIR3 domains of cIAP1, cIAP2, and XIAP and the single BIR domain of ML-IAP and rapidly degrades TRAF2-bound cIAP1 and cIAP2 thereby inhibiting TNF-mediated NF-κB activation[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Birinapant Related Antibodies
Cell Viability Assay[1]
Cell Line:
TRAIL-resistant SUM190 IBC cells
Concentration:
30, 100, 300, 1000, 10000 nM
Incubation Time:
24 hours
Result:
Significantly decreased the viability of SUM190 cells in a dose-dependent manner.
Western Blot Analysis[1]
Cell Line:
SUM190 cells
Concentration:
30, 300, 1000 nM
Incubation Time:
4 hours
Result:
Showed a significant decrease in cIAP1 levels and enhanced PARP cleavage.
In Vivo
Birinapant (TL32711) (30 mg/kg; i.p.; every third day (*5)) shows antitumor efficacy and are devoid of overt toxicity in preclinical models[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Animal Model:
Female athymic nude mice (low-passage, patient-derived xenotransplant models of ovarian cancer, colorectal cancer, and melanoma)[2]
Room temperature in continental US; may vary elsewhere.
Almacenamiento
Powder
-20°C
3 years
4°C
2 years
In solvent
-80°C
6 months
-20°C
1 month
Solvente y solubilidad
In Vitro:
DMSO : 125 mg/mL (154.91 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
Preparing Stock Solutions
ConcentrationSolventMass
1 mg
5 mg
10 mg
1 mM
1.2392 mL
6.1962 mL
12.3925 mL
5 mM
0.2478 mL
1.2392 mL
2.4785 mL
10 mM
0.1239 mL
0.6196 mL
1.2392 mL
View the Complete Stock Solution Preparation Table
*Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles. Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for in vivo experiments, it is recommended to prepare freshly and use it on the same day. The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.
Protocol 1
Add each solvent one by one: 10% DMSO 40% PEG300 5% Tween-80 45% Saline
This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μLDMSO stock solution (20.8 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.
Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
Protocol 2
Add each solvent one by one: 10% DMSO 90% (20% SBE-β-CD in Saline)
Solubility: 2.08 mg/mL (2.58 mM); Suspended solution; Need ultrasonic
This protocol yields a suspended solution of 2.08 mg/mL. Suspended solution can be used for oral and intraperitoneal injection.
Taking 1 mL working solution as an example, add 100 μLDMSO stock solution (20.8 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.
Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.
Protocol 3
Add each solvent one by one: 10% DMSO 90% Corn Oil
This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown). If the continuous dosing period exceeds half a month, please choose this protocol carefully.
Taking 1 mL working solution as an example, add 100 μLDMSO stock solution (20.8 mg/mL) to 900 μLCorn oil, and mix evenly.
In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:
Dosage
mg/kg
Animal weight (per animal)
g
Dosing volume (per animal)
μL
Number of animals
Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
%
DMSO+
%
+
%
Tween-80
+
%
Saline
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
The co-solvents required include: DMSO,
. All of co-solvents are available by MedChemExpress (MCE).
, Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Calculation results:
Working solution concentration:
mg/mL
Method for preparing stock solution:
mg
drug dissolved in
μL
DMSO (Stock solution concentration: mg/mL).
The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only. If necessary, please contact MedChemExpress (MCE).
Method for preparing in vivo working solution for animal experiments: Take
μL DMSO stock solution, add
μL .
μL , mix evenly, next add
μL Tween 80, mix evenly, then add
μL Saline.
Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution
If the continuous dosing period exceeds half a month, please choose this protocol carefully.
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
[1]. Allensworth JL, et al. Smac mimetic Birinapant induces apoptosis and enhances TRAIL potency in inflammatory breast cancer cells in an IAP-dependent and TNF-α-independent mechanism. Breast Cancer Res Treat. 2013 Jan;137(2):359-71.
[Content Brief]
[2]. Krepler C, et al. The novel SMAC mimetic birinapant exhibits potent activity against human melanoma cells. Clin Cancer Res. 2013 Apr 1;19(7):1784-94.
[Content Brief]
[3]. Nguyen QD, et al. Temporal and spatial evolution of therapy-induced tumor apoptosis detected by caspase-3-selective molecular imaging. Clin Cancer Res. 2013 Jul 15;19(14):3914-24.
[Content Brief]
[4]. Benetatos CA, et al. Birinapant (TL32711), a bivalent SMAC mimetic, targets TRAF2-associated cIAPs, abrogates TNF-induced NF-κB activation, and is active in patient-derived xenograft models. Mol Cancer Ther. 2014 Apr;13(4):867-79.
[Content Brief]
[1]. Allensworth JL, et al. Smac mimetic Birinapant induces apoptosis and enhances TRAIL potency in inflammatory breast cancer cells in an IAP-dependent and TNF-α-independent mechanism. Breast Cancer Res Treat. 2013 Jan;137(2):359-71.
[2]. Krepler C, et al. The novel SMAC mimetic birinapant exhibits potent activity against human melanoma cells. Clin Cancer Res. 2013 Apr 1;19(7):1784-94.
[3]. Nguyen QD, et al. Temporal and spatial evolution of therapy-induced tumor apoptosis detected by caspase-3-selective molecular imaging. Clin Cancer Res. 2013 Jul 15;19(14):3914-24.
[4]. Benetatos CA, et al. Birinapant (TL32711), a bivalent SMAC mimetic, targets TRAF2-associated cIAPs, abrogates TNF-induced NF-κB activation, and is active in patient-derived xenograft models. Mol Cancer Ther. 2014 Apr;13(4):867-79.
Complete Stock Solution Preparation Table
*Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles. Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
Optional Solvent
ConcentrationSolventMass
1 mg
5 mg
10 mg
25 mg
DMSO
1 mM
1.2392 mL
6.1962 mL
12.3925 mL
30.9812 mL
5 mM
0.2478 mL
1.2392 mL
2.4785 mL
6.1962 mL
10 mM
0.1239 mL
0.6196 mL
1.2392 mL
3.0981 mL
15 mM
0.0826 mL
0.4131 mL
0.8262 mL
2.0654 mL
20 mM
0.0620 mL
0.3098 mL
0.6196 mL
1.5491 mL
25 mM
0.0496 mL
0.2478 mL
0.4957 mL
1.2392 mL
30 mM
0.0413 mL
0.2065 mL
0.4131 mL
1.0327 mL
40 mM
0.0310 mL
0.1549 mL
0.3098 mL
0.7745 mL
50 mM
0.0248 mL
0.1239 mL
0.2478 mL
0.6196 mL
60 mM
0.0207 mL
0.1033 mL
0.2065 mL
0.5164 mL
80 mM
0.0155 mL
0.0775 mL
0.1549 mL
0.3873 mL
100 mM
0.0124 mL
0.0620 mL
0.1239 mL
0.3098 mL
Birinapant Related Classifications
ApoptosisAnti-infection
IAPApoptosisHIV
Help & FAQs
Do most proteins show cross-species activity?
Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.