2. GPCR/G Protein Immunology/Inflammation
  3. CXCR
  4. SB225002

SB225002, a potent, selective and non-peptide CXCR2 antagonist, inhibits 125I-IL-8 binding to CXCR2 with an IC50 of 22 nM.

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SB225002 Chemical Structure

SB225002 Chemical Structure

CAS No. : 182498-32-4

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Customer Review

Based on 36 publication(s) in Google Scholar

SB225002 Related Antibodies

Top Publications Citing Use of Products

35 Publications Citing Use of MCE SB225002

IF

    SB225002 purchased from MedChemExpress. Usage Cited in: J Autoimmun. 2018 May;89:30-40.  [Abstract]

    The blockade of neutrophil infiltration and intracutaneous injection of exogenous galectin-3 ameliorates skin inflammation in galectin 3-/- mice

    View All CXCR Isoform Specific Products:

    View All Isoforms
    CXCR CXCR1 CXCR2 CXCR3 CXCR4 CXCR7 CXCR6

    • Biological Activity

    • Protocol

    • Purity & Documentation

    • References

    • Customer Review

    Description

    SB225002, a potent, selective and non-peptide CXCR2 antagonist, inhibits 125I-IL-8 binding to CXCR2 with an IC50 of 22 nM.

    IC50 & Target[1]

    125I-IL-8-CXCR2

    22 nM (IC50, in CHO cell membrane)

    In Vitro

    SB225002 (SB 225002) is an antagonist of 125I-IL-8 binding to CXCR2 with an IC50=22 nM. SB225002 shows >150-fold selectivity over CXCR1 and four other 7-TMRs tested. SB225002 is a potent antagonist of rabbit CXCR2, inhibiting rabbit PMN chemotaxis in response to optimal concentrations of human IL-8 or GROα (IC50 values of 30 and 70 nM, respectively. In these cells (PMN, HL60, CXCR1-RBL-2H3), SB225002 produces a concentration-dependent inhibition of both IL-8- and GROα-mediated calcium mobilization with IC50 values of 8 and 10 nM, respectively. In 3ASubE cells stably transfected with CXCR2, SB 225002 dose-dependently inhibits calcium mobilization induced by both GROα and IL-8, with IC50 values of 20 and 40 nM, respectively[1]. WHCO1 cells treated with SB225002 exhibits a 40% reduction in cell proliferation. Blocking CXCR2 signaling in WHCO1 cells with 400 nM SB225002 (SB 225002) significantly decreases cell proliferation by ~40% to 50%[2].

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

    SB225002 Related Antibodies
    In Vivo

    SB225002 (SB 225002) selectively blocks IL-8-induced neutrophil margination in rabbits[1]. CXCR2 is blocked using the selective antagonist SB225002 (2 mg/kg) or neutralizing CXCR2 antiserum. The CXCR2 antagonist SB225002 decreases neutrophil counts in ischemic hemispheres of ApoE / mice on Western diet and wildtype mice on normal diet[3]. SB225002 significantly attenuates microglial activation and BBB damage, increases myelination, and reduces astrogliosis in the white matter after LPS-sensitized HI[4].

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

    352.14

    Formula

    C13H10BrN3O4
    CAS No.
    Appearance

    Solid

    Color

    Light yellow to yellow

    SMILES

    O=C(NC1=CC=C([N+]([O-])=O)C=C1O)NC2=CC=CC=C2Br
    Shipping

    Room temperature in continental US; may vary elsewhere.
    Storage

    4°C, stored under nitrogen

    *In solvent : -80°C, 2 years; -20°C, 1 year (stored under nitrogen)

    Solvent & Solubility
    In Vitro: 

    DMSO : ≥ 100 mg/mL (283.98 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 2.8398 mL 14.1989 mL 28.3978 mL
    5 mM 0.5680 mL 2.8398 mL 5.6796 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 (stored under nitrogen). 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)

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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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    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    90% Corn Oil

      Solubility: ≥ 2.5 mg/mL (7.10 mM); Clear solution

      This protocol yields a clear solution of ≥ 2.5 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 μL DMSO stock solution (25.0 mg/mL) to 900 μL Corn oil, and mix evenly.

    • Protocol 2

      Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% Saline

      Solubility: ≥ 2.08 mg/mL (5.91 mM); Clear solution

      This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).

      Taking 1 mL working solution as an example, add 100 μL DMSO 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.
    In Vivo Dissolution Calculator
    Please enter the basic information of animal experiments:

    Dosage

    mg/kg

    Animal weight
    (per animal)

    g

    Dosing volume
    (per animal)

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    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).

    *In solvent : -80°C, 2 years; -20°C, 1 year (stored under nitrogen)

    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: 99.87%

    COA (248 KB) LCMS (106 KB)

    Handling Instructions (2659 KB)
    References
    Kinase Assay
    [1]

    CHO-CXCR1 and CHO-CXCR2 membranes are prepared. Assays are performed in 96-well microtiter plates where the reaction mixture contained 1.0 μg/mL membrane protein in 20 mM Bis-Tris-propane, pH 8.0, with 1.2 mM MgSO4, 0.1 mM EDTA, 25 mM NaCl, and 0.03% CHAPS and SB 225002 (10 mM stock in Me2SO) added at the indicated concentrations, the final Me2SO concentration is <1% under standard binding conditions. Binding is initiated by addition of 0.25 nM 125I-IL-8 (2,200 Ci/mmol). After 1-h incubation at room temperature the plate is harvested using a Tomtec 96-well harvester onto a glass fiber filtermat blocked with 1% polyethyleneimine, 0.5% BSA and washed three times with 25 mM NaCl, 10 mM Tris•HCl, 1 mM MgSO4, 0.5 mMEDTA, 0.03% CHAPS, pH 7.4. The filter is dried, sealed in a sample bag containing 10 mL of Wallac 205 Betaplate liquid scintillation fluid, and counted with a Wallac 1205 Betaplate liquid scintillation counter[1].

    MCE has not independently confirmed the accuracy of these methods. They are for reference only.
    Cell Assay
    [2]

    Three esophageal squamous cell carcinoma cell lines WHCO1, WHCO5, and WHCO6 originally established from surgical biopsies of primary esophageal squamous cell carcinomas are cultured in DMEM containing 10% FCS at 37°C in a humidified atmosphere of 5% CO2. MTT assays are carried out using the Cell Proliferation kit. Briefly, 1.5×103 cells are plated in 96-well plates in a final volume of 180 μL DMEM per well. SB 225002 (400 nM) is added to cells and 0.001% DMSO (solvent) is added as a control. After the indicated incubation period, 18 μL of the MTT labeling reagent (final concentration 0.5 mg/mL) is added to each well and incubated for 4 hours in a humidified atmosphere. One hundred eighty microliters of the solubilization solution are added to each well and the plates are left overnight at 37°C. The spectrophotometric absorbance of samples is measured at 595 nm using a microtiter plate reader[2].

    MCE has not independently confirmed the accuracy of these methods. They are for reference only.
    Animal Administration
    [3][4]

    Mice[3]
    Male 7-8 weeks old wildtype (C57BL/6J, Harlan) and ApoE−/− mice, which are generated on the same C57BL/6 background, are either fed with a normal chow or a cholesterol rich chow for 6 weeks and submitted to 20 min of left-sided middle cerebral artery occlusion (MCAO) or sham surgery. Animals are randomly attributed to treatment paradigms, and experimenters are blinded at all stages of interventions and data analysis. The selective CXCR2 antagonist SB225002 (2 mg/kg) or vehicle (1% DMSO in PBS) is injected intraperitoneally (i.p.) at 0, 24 and 48 hours post-ischemia. In other experiments, CXCR2 is specifically blocked by i.p. injection of a neutralizing rabbit anti-CXCR2 serum (300 μL) at 0 hours, 24 hours and 48 hours post-ischemia. In the latter studies, normal rabbit serum (NRS) served as control. In some experiments, neutrophils are depleted by i.p. injection of 200 μg anti-mouse Ly6G 24 hours before and 24 hours after ischemia. In these experiments, 200 μg of an isotype control antibody is delivered as control.
    Rats[4]
    In this study, 10-12 Sprague-Dawley rat pups per dam are used. The pups receive intraperitoneal injections of SB225002 (1 or 3 mg/kg, diluted in NS containing 0.33 % Tween 80) or vehicle (NS solution containing 0.33 % Tween 80) 30 min before lipopolysaccharide (LPS) administration and immediately after hypoxic ischemia (HI). The pups are randomly assigned to four groups: control (pups unexposed to LPS or HI, N=14), vehicle (NS injections 30 min before LPS administration and immediately after HI, N=18), and SB-1 (1 mg/kg, N=14) and SB-3 (3 mg/kg, N=18) (SB225002 injections 30 min before LPS administration and immediately after HI).

    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 (stored under nitrogen). 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 2.8398 mL 14.1989 mL 28.3978 mL 70.9945 mL
    5 mM 0.5680 mL 2.8398 mL 5.6796 mL 14.1989 mL
    10 mM 0.2840 mL 1.4199 mL 2.8398 mL 7.0994 mL
    15 mM 0.1893 mL 0.9466 mL 1.8932 mL 4.7330 mL
    20 mM 0.1420 mL 0.7099 mL 1.4199 mL 3.5497 mL
    25 mM 0.1136 mL 0.5680 mL 1.1359 mL 2.8398 mL
    30 mM 0.0947 mL 0.4733 mL 0.9466 mL 2.3665 mL
    40 mM 0.0710 mL 0.3550 mL 0.7099 mL 1.7749 mL
    50 mM 0.0568 mL 0.2840 mL 0.5680 mL 1.4199 mL
    60 mM 0.0473 mL 0.2366 mL 0.4733 mL 1.1832 mL
    80 mM 0.0355 mL 0.1775 mL 0.3550 mL 0.8874 mL
    100 mM 0.0284 mL 0.1420 mL 0.2840 mL 0.7099 mL
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    SB225002 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:

    SB225002182498-32-4SB 225002SB-225002CXCRCXC chemokine receptorsC-X-C motif chemokine receptorsInhibitorinhibitorinhibit

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