2. PI3K/Akt/mTOR Autophagy
  3. PI3K Autophagy
  4. Idelalisib

Idelalisib  (Synonyms: CAL-101; GS-1101)

Cat. No.: HY-13026 Purity: 99.60%
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Idelalisib (CAL-101; GS-1101) is a highly selective and orally bioavailable p110δ inhibitor with an IC50 of 2.5 nM, showing 40- to 300-fold selectivity for p110δ over other PI3K class I enzymes.

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

Idelalisib Chemical Structure

Idelalisib Chemical Structure

CAS No. : 870281-82-6

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10 mM * 1 mL in DMSO
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Based on 41 publication(s) in Google Scholar

Other Forms of Idelalisib:

Idelalisib Related Antibodies

Top Publications Citing Use of Products

38 Publications Citing Use of MCE Idelalisib

WB
Proliferation Assay

    Idelalisib purchased from MedChemExpress. Usage Cited in: Oncotarget. 2016 Aug 16;7(33):53515-53525.  [Abstract]

    PI3KD/V-IN-01 affects autophagy HeLa cells are treated with different concentrations of PI3KD/V-IN-01, VPS34-IN-1, GDC-0941 or CAL-101 for 16 hours before they are fixed and stained for the autophagy marker LC3B.

    Idelalisib purchased from MedChemExpress. Usage Cited in: Oncotarget. 2016 May 31;7(22):32641-51.  [Abstract]

    The well-established PI3Kδ specific inhibitor, CAL-101, shows similar effects as PI3KD-IN-015 with an EC50 of 2.3 nM against PI3Kδ and over 1000-fold less potent against the other three isoforms. Determination of CAL-101 inhibitory activities against PI3Kα, β, δ and γ in cellular background.

    Idelalisib purchased from MedChemExpress. Usage Cited in: Br J Haematol. 2015 Jul;170(1):134-8.  [Abstract]

    Treatment of CXCR4WT and CXCR4S338X BCWM.1 and MWCL-1 cells with PCI-32765 or Idelalisib induced caspase-3 and PARP cleavage at 6 h. Caspase-3 and PAPR cleavage following PCI-32765 (IB), Idelalisib (ID), ABT-199 (ABT), in the presence of absence of CXCL12 (SDF) and AMD3100 (AMD).

    View All PI3K Isoform Specific Products:

    View All Isoforms
    PI3Kα PI3Kβ PI3Kγ PI3Kδ PI3KC2α PI3KC2β PI3KC2γ Vps34 PI3K PI3KC3 p120γ

    • Biological Activity

    • Protocol

    • Purity & Documentation

    • References

    • Customer Review

    Description

    Idelalisib (CAL-101; GS-1101) is a highly selective and orally bioavailable p110δ inhibitor with an IC50 of 2.5 nM, showing 40- to 300-fold selectivity for p110δ over other PI3K class I enzymes.

    IC50 & Target[1]

    p110δ

    2.5 nM (IC50)

    p110γ

    89 nM (IC50)

    p110β

    565 nM (IC50)

    p110α

    820 nM (IC50)

    hVps34

    978 nM (IC50)

    DNA-PK

    6729 nM (IC50)

    In Vitro

    Idelalisib (CAL-101; GS-1101) is a highly selective and potent p110δ inhibitor (EC50=8 nM). Greater selectivity (400- to 4000-fold) is seen against related kinases C2β, hVPS34, DNA-PK, and mTOR, whereas no activity is observed against a panel of 402 diverse kinases at 10 μM. CAL-101 reduces PDGF-induced pAkt by only 25% at 10 μM. Idelalisib (CAL-101) inhibits LPA-induced pAkt with an EC50 of 1.9 μM. Idelalisib (CAL-101) blocks FcϵRI p110δ-mediated CD63 expression with an EC50 of 8 nM, whereas formyl-methionyl-leucyl-phenylalanine activation of p110γ is inhibited with an EC50 of 3 μM. Thus, in cell-based assays, CAL-101 has 240- to 2500-fold selectivity for p110δ over the other class I PI3K isoforms[1]. CAL-101Idelalisib (CAL-101)-induced apoptosis of chronic lymphocytic leukemia (CLL) cells is significant compare with vehicle treatment alone (P<0.001). Idelalisib (CAL-101) induces selective cytotoxicity in CLL cells independent of IgVH mutational status or interphase cytogenetics[2].

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

    Idelalisib Related Antibodies
    In Vivo

    A significant reduction is observed in the CD11b+Ly6G+ neutrophils from brain homogenates of bothp110δD910A/D910A mice and Idelalisib (CAL-101) (40 mg/kg, i.v.) post-treated mice[3].

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

    415.42

    Formula

    C22H18FN7O
    CAS No.
    Appearance

    Solid

    Color

    White to off-white

    SMILES

    O=C1N(C2=CC=CC=C2)C([C@@H](NC3=C4N=CNC4=NC=N3)CC)=NC5=C1C(F)=CC=C5
    Shipping

    Room temperature in continental US; may vary elsewhere.
    Storage
    Powder -20°C 3 years
    4°C 2 years
    In solvent -80°C 1 year
    -20°C 6 months
    Solvent & Solubility
    In Vitro: 

    DMSO : ≥ 59.7 mg/mL (143.71 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 2.4072 mL 12.0360 mL 24.0720 mL
    5 mM 0.4814 mL 2.4072 mL 4.8144 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, 1 year; -20°C, 6 months. When stored at -80°C, please use it within 1 year. When stored at -20°C, please use it within 6 months.

    • Molarity Calculator

    • Dilution Calculator

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

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

    This equation is commonly abbreviated as: C1V1 = C2V2

    Concentration (start)

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    Volume (start)

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    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 (6.02 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 (6.02 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

    Purity: 99.78%

    COA (257 KB) LCMS (120 KB) Elemental Analysis Report (115 KB)

    Handling Instructions (2659 KB)
    References
    Cell Assay
    [2]

    MTT assays are performed to determine cytotoxicity. Briefly, 1×105 cells (CLL B cells or healthy volunteer T cells or NK cells) are incubated for 48 hours with different concentrations of Idelalisib (CAL-101) (0.1 μM, 1 μM, 5 μM, 10 μM), 25 μM LY294002, or vehicle control. MTT reagent is then added. DMSO is added, and absorbance is measured by spectrophotometry at 540 nm in a Labsystems plate reader. Cell viability is also measured at various time points with the use of annexin/PI flow cytometry. Data are analyzed with Expo-ADC32 software package. At least 10,000 cells are counted for each sample. Results are expressed as the percentage of total positive cells over untreated control. Experiments examining caspase-dependent apoptosis included the addition of 100 μM Z-VAD. Experiments examining survival signals include the addition of 1 μg/mL CD40L, 800 U/mL IL-4, 50 ng/mL BAFF, 20 ng/mL TNF-α, or coculturing on fibronectin or stromal (HS-5 cell line) coated plates. Stromal coculture is done by plating a 75-cm2 flask (80%-100% confluent) per 6-well plate 24 hours before the addition of CLL cells[2].

    MCE has not independently confirmed the accuracy of these methods. They are for reference only.
    Animal Administration
    [3]

    Mice[3]
    For Idelalisib (CAL-101) treatment, wild-type C57BL/6 mice are administered either 40 mg/kg Idelalisib (CAL-101) or vehicle DMSO, by 25 μL infusion into the femoral vein, 15 min before I/R (pre-treatment), or 3 and 6 h after initiation of reperfusion (post-treatment). Controls and animals treated with Idelalisib (CAL-101) underwent cerebral blood flow (CBF) measurements using a laser Doppler perfusion monitor. The CBF measurements obtained immediately before and after MCAO and again at 3 h after reperfusion showed an ~90-95% reduction in the blood flow to the MCAO infarct region, which does not differ between groups.

    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, 1 year; -20°C, 6 months. When stored at -80°C, please use it within 1 year. When stored at -20°C, please use it within 6 months.

    Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
    DMSO 1 mM 2.4072 mL 12.0360 mL 24.0720 mL 60.1801 mL
    5 mM 0.4814 mL 2.4072 mL 4.8144 mL 12.0360 mL
    10 mM 0.2407 mL 1.2036 mL 2.4072 mL 6.0180 mL
    15 mM 0.1605 mL 0.8024 mL 1.6048 mL 4.0120 mL
    20 mM 0.1204 mL 0.6018 mL 1.2036 mL 3.0090 mL
    25 mM 0.0963 mL 0.4814 mL 0.9629 mL 2.4072 mL
    30 mM 0.0802 mL 0.4012 mL 0.8024 mL 2.0060 mL
    40 mM 0.0602 mL 0.3009 mL 0.6018 mL 1.5045 mL
    50 mM 0.0481 mL 0.2407 mL 0.4814 mL 1.2036 mL
    60 mM 0.0401 mL 0.2006 mL 0.4012 mL 1.0030 mL
    80 mM 0.0301 mL 0.1505 mL 0.3009 mL 0.7523 mL
    100 mM 0.0241 mL 0.1204 mL 0.2407 mL 0.6018 mL
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    Idelalisib 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:

    Idelalisib870281-82-6CAL-101 GS-1101CAL101CAL 101GS1101GS 1101GS-1101PI3KAutophagyPhosphoinositide 3-kinaseInhibitorinhibitorinhibit

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