2. PI3K/Akt/mTOR
  3. PI3K mTOR
  4. Bimiralisib

Bimiralisib (PQR309) is a potent, brain-penetrant, orally bioavailable, pan-class I PI3K/mTOR inhibitor with IC50s of 33 nM, 451 nM, 661 nM, 708 nM and 89 nM for PI3Kα, PI3Kδ, PI3Kβ, PI3Kγ and mTOR, respectively. Bimiralisib is an mTORC1 and mTORC2 inhibitor.

For research use only. We do not sell to patients.

Bimiralisib Chemical Structure

Bimiralisib Chemical Structure

CAS No. : 1225037-39-7

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Customer Review

Based on 3 publication(s) in Google Scholar

Other Forms of Bimiralisib:

Bimiralisib Related Antibodies

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mTOR mTORC1 mTORC2

  • Biological Activity

  • Protocol

  • Purity & Documentation

  • References

  • Customer Review

Description

Bimiralisib (PQR309) is a potent, brain-penetrant, orally bioavailable, pan-class I PI3K/mTOR inhibitor with IC50s of 33 nM, 451 nM, 661 nM, 708 nM and 89 nM for PI3Kα, PI3Kδ, PI3Kβ, PI3Kγ and mTOR, respectively. Bimiralisib is an mTORC1 and mTORC2 inhibitor.

IC50 & Target[1][2]

PI3Kα

33 nM (IC50)

PI3Kα-H1047R

36 nM (IC50)

PI3Kα-E542K

63 nM (IC50)

PI3Kα-E545K

136 nM (IC50)

PI3Kδ

451 nM (IC50)

PI3Kβ

661 nM (IC50)

PI3Kγ

708 nM (IC50)

Vps34

6486 nM (IC50)

mTOR

89 nM (IC50)

mTORC1

 

mTORC2

 

DNA-PK

8567 nM (IC50)

Cellular Effect
Cell Line Type Value Description References
A2058 IC50
139 nM
Compound: 1; PQR309
Inhibition of mTORC2 in human A2058 cells assessed as reduction in PKB phosphorylation at S473 residues incubated for 1 hr by Western blot analysis
Inhibition of mTORC2 in human A2058 cells assessed as reduction in PKB phosphorylation at S473 residues incubated for 1 hr by Western blot analysis
[PMID: 31465220]
A2058 IC50
139 nM
Compound: 5; PQR309
Inhibition of Class 1 PI3K/mTOR in human A2058 cells assessed as reduction in Akt phosphorylation at Ser473 residue incubated for 1 hr by InCell Western assay
Inhibition of Class 1 PI3K/mTOR in human A2058 cells assessed as reduction in Akt phosphorylation at Ser473 residue incubated for 1 hr by InCell Western assay
[PMID: 31244112]
A2058 IC50
205 nM
Compound: 1; PQR309
Inhibition of mTORC1 in human A2058 cells assessed as reduction in ribosomal protein S6 phosphorylation at Ser235/236 residues incubated for 1 hr by Western blot analysis
Inhibition of mTORC1 in human A2058 cells assessed as reduction in ribosomal protein S6 phosphorylation at Ser235/236 residues incubated for 1 hr by Western blot analysis
[PMID: 31465220]
A2058 IC50
205 nM
Compound: 5; PQR309
Inhibition of Class 1 PI3K/mTOR in human A2058 cells assessed as reduction in S6 phosphorylation at Ser235/236 residue incubated for 1 hr by InCell Western assay
Inhibition of Class 1 PI3K/mTOR in human A2058 cells assessed as reduction in S6 phosphorylation at Ser235/236 residue incubated for 1 hr by InCell Western assay
[PMID: 31244112]
A2058 IC50
2333 nM
Compound: 1; PQR309
Antiproliferative activity against human A2058 cells after 48 hrs by sulforhodamine B assay
Antiproliferative activity against human A2058 cells after 48 hrs by sulforhodamine B assay
[PMID: 28829592]
SK-OV-3 IC50
237 nM
Compound: 1; PQR309
Antiproliferative activity against human SKOV3 cells after 48 hrs by sulforhodamine B assay
Antiproliferative activity against human SKOV3 cells after 48 hrs by sulforhodamine B assay
[PMID: 28829592]
In Vitro

Bimiralisib is a highly selective pan-PI3K inhibitor with a balanced targeting of mTOR kinase. Bimiralisib also inhibits PI3Kα-H1047R), PI3Kα-E542K and PI3Kα-E545K with IC50s of 36 nM, 63 nM and 136 nM, respectively[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Bimiralisib Related Antibodies
In Vivo

Oral administration yields similar concentrations of Bimiralisib in brain and plasma samples illustrates that Bimiralisib readily passes the blood–brain barrier. In mice, both po and iv application routes show a rapid drop below 200 ng/mL (~0.5 μM) of PQR309 within <1 h (iv) to <2 h (po) after administration, which reflects the time point when the drug reaches the median GI50 determined in tumor cell lines. In female rats a single oral dose (10 mg/kg) achieves similar drug levels as a single intravenous injection (5 mg/kg) with regard to Cmax. The half-life of 5-8 h and an AUC0.25-12 of around 14 000 h?ng/mL contributed to an excellent oral bioavailability of PQR309 (>50%). Twenty-four hours after po administration, plasma levels of PQR309 are still >2 μM (800-1000 ng/mL). Moreover, after 1-2 h exposure to PQR309 , drug levels in rat brain samples are comparable to plasma levels, confirming rapid access of PQR309 to the brain[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Clinical Trial
Molecular Weight

411.38

Formula

C17H20F3N7O2
CAS No.
Appearance

Solid

Color

White to gray

SMILES

NC1=NC=C(C2=NC(N3CCOCC3)=NC(N4CCOCC4)=N2)C(C(F)(F)F)=C1
Shipping

Room temperature in continental US; may vary elsewhere.
Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 2 years
-20°C 1 year
Solvent & Solubility
In Vitro: 

DMSO : ≥ 50 mg/mL (121.54 mM; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

*"≥" means soluble, but saturation unknown.

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.4308 mL 12.1542 mL 24.3084 mL
5 mM 0.4862 mL 2.4308 mL 4.8617 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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

  • Molarity Calculator

  • Dilution Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass
=
Concentration
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Volume
×
Molecular Weight *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

×
Volume (start)

V1

=
Concentration (final)

C2

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Volume (final)

V2

In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

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

    Solubility: ≥ 2.5 mg/mL (6.08 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 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: ≥ 2.5 mg/mL (6.08 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 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.
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.
 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.
Purity & Documentation
References
Cell Assay
[1]

Human tumor cell lines are seeded into 96-well microtiter plates and exposed to five (1/2 log serial) drug dilutions plus control, followed by 48 h (except for two controls of each cell line which are fixed with TCA (cell population at t =0 h [Tz]). The assay is terminated by fixation with TCA (10% final). Cell density is determined using a sulforhodamine B staining protocol and the absorbance measured at 515 nm. Using seven absorbance measurements, the percentage growth is calculated at each of the drug concentrations levels. Percentage growth inhibition is calculated. The NTRC Oncolines 44 cell lines are exposed for 72 h to 9-point 3-fold serial dilutions of Bimiralisib. The concentration of 50% growth inhibition is associated with the signal ((luminescenceuntreated,t=72h-luminescencet=0)/2)+luminescencet=0. The data set integrated here is used for IC50 calculations. IC50 values of A2058 or SKOV3 cell proliferation given are determined and calculated[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.
Animal Administration
[1]

Mice[1]
Healthy male nude NIH rats are used. 2×107 PC-3 cells are injected subcutaneously at day 0 (D0) in 200 μL of RPMI1640 into the right flank of male nude rats, 24 h after a whole-body irradiation with a γ-source (5 Gy, 60Co). Tumor-bearing rats are randomized on day 16 (mean volume of 330±70 mm3 according to their individual tumor volume into five groups of each eight animals using Vivo manager software. Analysis of variance is performed to test for homogeneity between groups. Daily administration on D17-D44 and from D51 to D57: group 1, vehicle; group 2, compound 1 at 5 mg/kg; group 3, Bimiralisib at 10 mg/kg. Group 4: Bimiralisib at 15 mg/kg from D17 to D21, from D24 to D28, from D34 to D38, from D41 to D4, and from D51 to D56. Group 5: one iv injection of Vinorelbine at 2.5 mg/kg on D17, D24, D31, and D38. Final termination of rats is performed on D87. Body weight is measured at least twice a week. Length and width of tumors are measured and recorded twice a week with calipers, and the tumor volume is estimated.

MCE has not independently confirmed the accuracy of these methods. They are for reference only.
References

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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 2.4308 mL 12.1542 mL 24.3084 mL 60.7711 mL
5 mM 0.4862 mL 2.4308 mL 4.8617 mL 12.1542 mL
10 mM 0.2431 mL 1.2154 mL 2.4308 mL 6.0771 mL
15 mM 0.1621 mL 0.8103 mL 1.6206 mL 4.0514 mL
20 mM 0.1215 mL 0.6077 mL 1.2154 mL 3.0386 mL
25 mM 0.0972 mL 0.4862 mL 0.9723 mL 2.4308 mL
30 mM 0.0810 mL 0.4051 mL 0.8103 mL 2.0257 mL
40 mM 0.0608 mL 0.3039 mL 0.6077 mL 1.5193 mL
50 mM 0.0486 mL 0.2431 mL 0.4862 mL 1.2154 mL
60 mM 0.0405 mL 0.2026 mL 0.4051 mL 1.0129 mL
80 mM 0.0304 mL 0.1519 mL 0.3039 mL 0.7596 mL
100 mM 0.0243 mL 0.1215 mL 0.2431 mL 0.6077 mL
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Bimiralisib Related Classifications

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.

Keywords:

Bimiralisib1225037-39-7PQR309PQR 309PQR-309PI3KmTORPhosphoinositide 3-kinaseMammalian target of RapamycinInhibitorinhibitorinhibit

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