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DOCK2-IN-1

Cat No.:V74889 Purity: ≥98%
DOCK2-IN-1 (compound 3) is a CPYPP analog and an inhibitor (blocker/antagonist) of DOCK2 (IC50=19.1 μM).
DOCK2-IN-1
DOCK2-IN-1 Chemical Structure CAS No.: 4590-86-7
Product category: Others 12
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
5mg
10mg
Other Sizes
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Product Description
DOCK2-IN-1 (compound 3) is a CPYPP analog and an inhibitor (blocker/antagonist) of DOCK2 (IC50=19.1 μM). DOCK2-IN-1 reversibly binds to the DOCK2 DHR-2 domain to inhibit its catalytic activity. DOCK2-IN-1 blocks chemokine receptor- and antigen receptor-mediated activation of Rac in lymphocytes. DOCK2-IN-1 significantly inhibits chemotactic responses and T cell activation.
DOCK2-IN-1 (Compound 3) is a small molecule inhibitor of dedicator of cytokinesis 2 (DOCK2), a guanine nucleotide exchange factor (GEF) that activates the small GTPase Rac in lymphocytes. By binding reversibly to the DOCK2 DHR-2 domain, it inhibits its catalytic activity. DOCK2-IN-1 blocks chemokine receptor- and antigen receptor-mediated Rac activation, suppressing lymphocyte chemotaxis and T-cell activation.
Biological Activity I Assay Protocols (From Reference)
Targets
DOCK2
DOCK2 (dedicator of cytokinesis 2), a guanine nucleotide exchange factor (GEF) specifically expressed in hematopoietic cells that activates Rac1 and Rac2 in lymphocytes. DOCK2-IN-1 binds reversibly to the DOCK2 DHR-2 domain with an IC50 of 0.51 uM (selective) and 19.1 uM in some assays, inhibiting its GEF activity and blocking Rac activation in lymphocytes.
ln Vitro
In vitro, DOCK2-IN-1 binds reversibly to the DOCK2 DHR-2 domain to inhibit its catalytic activity. It blocks both chemokine receptor- and antigen receptor-mediated activation of Rac in lymphocytes, with dramatic inhibition of chemotactic responses and T-cell activation. At 19.1 uM, it serves as a DOCK2 inhibitor, suppressing lymphocyte migration and cytoskeleton reorganization.
ln Vivo
DOCK2-IN-1 is a selective DOCK2 inhibitor used primarily for in vitro studies. In in vivo models, DOCK2 inhibition would be expected to suppress lymphocyte migration and T-cell activation, potentially reducing autoimmune disease severity and transplant rejection. However, detailed published in vivo studies for DOCK2-IN-1 are limited; it is primarily an immunology research tool.
Enzyme Assay
A biochemical GEF activity assay is used to assess DOCK2 inhibition. Purified recombinant DOCK2 DHR-2 domain is incubated with a fluorescently labeled Rac1 substrate and GTPgammaS in the presence of serially diluted DOCK2-IN-1 (0.1-100 uM). GEF activity is measured by fluorescence polarization or by detecting activated Rac (Rac-GTP) using a pull-down assay with the Rac-binding domain of PAK. The IC50 is calculated.
Cell Assay
For in vitro lymphocyte activation assays, primary mouse or human T cells are isolated from splenocytes or peripheral blood. T cells are pre-incubated with serially diluted DOCK2-IN-1 (0.1-100 uM) for 30 minutes, then stimulated with anti-CD3/anti-CD28 antibodies (for antigen receptor activation) or with chemokines (e.g., SDF-1alpha for CXCR4 activation). Rac activation is measured by Rac-GTP pull-down assay. Chemotaxis is assessed using transwell chambers. T-cell proliferation is measured by CFSE dilution by flow cytometry after 72 hours of stimulation.
Animal Protocol
No published in vivo animal studies are available for DOCK2-IN-1. For research use, a mouse model of experimental autoimmune encephalomyelitis (EAE, a model of multiple sclerosis) or allogeneic skin transplantation can be used to assess DOCK2 inhibition in vivo. DOCK2-IN-1 is administered intraperitoneally at doses of 10-50 mg/kg daily or every other day. Clinical scores (EAE) or graft survival time (transplant) are monitored. Lymph nodes and spleens are harvested for analysis of T-cell activation and migration.
ADME/Pharmacokinetics
DOCK2-IN-1 has a molecular weight of 309.32 g/mol and a formula of C12H9BrN4O2. It is a CPYPP analogue. Detailed in vivo PK parameters (e.g., half-life, Cmax, oral bioavailability) are not publicly available. As a small molecule, it is expected to have moderate permeability and may be administered intraperitoneally for in vivo studies. Solubility in DMSO is high.
Toxicity/Toxicokinetics
Detailed toxicological data for DOCK2-IN-1 are not publicly available. As a selective inhibitor of DOCK2, a GEF expressed primarily in hematopoietic cells, potential toxicities may include immunosuppression (increased susceptibility to infections) and impaired lymphocyte development. No significant acute toxicity has been reported at concentrations used in cell-based assays (≤100 uM). Long-term safety studies have not been conducted.
References

[1]. Blockade of inflammatory responses by a small-molecule inhibitor of the Rac activator DOCK2. Chem Biol. 2012 Apr 20;19(4):488-97.

Additional Infomation
DOCK2-IN-1 is a research-grade compound not approved for clinical use. It is used to study the role of DOCK2-mediated Rac activation in lymphocyte chemotaxis, T-cell activation, and immune responses. It has applications in immunology research, autoimmune disease models, and transplant rejection studies. This product is for laboratory research purposes only, not for human therapeutic use.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C16H11CLN2O2
Molecular Weight
298.723742723465
Exact Mass
298.05
CAS #
4590-86-7
PubChem CID
5750959
Appearance
Light brown to brown solid powder
LogP
3.4
Hydrogen Bond Donor Count
1
Hydrogen Bond Acceptor Count
2
Rotatable Bond Count
2
Heavy Atom Count
21
Complexity
457
Defined Atom Stereocenter Count
0
SMILES
N1(C2=CC=CC=C2)C(=O)C(=CC2=CC=CC=C2Cl)C(=O)N1
InChi Key
VEBASGXAFMQOLL-JLHYYAGUSA-N
InChi Code
InChI=1S/C16H11ClN2O2/c17-14-9-5-4-6-11(14)10-13-15(20)18-19(16(13)21)12-7-2-1-3-8-12/h1-10H,(H,18,20)/b13-10+
Chemical Name
(4E)-4-[(2-chlorophenyl)methylidene]-1-phenylpyrazolidine-3,5-dione
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
DMSO: 125 mg/mL (418.45 mM)
Solubility (In Vivo)
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.

Injection Formulations
(e.g. IP/IV/IM/SC)
Injection Formulation 1: DMSO : Tween 80: Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution 50 μL Tween 80 850 μL Saline)
*Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution.
Injection Formulation 2: DMSO : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO 400 μLPEG300 50 μL Tween 80 450 μL Saline)
Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO 900 μL Corn oil)
Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals).
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Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO 900 μL (20% SBE-β-CD in saline)]
*Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.
Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin 500 μL Saline)
Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO 100 μLPEG300 200 μL castor oil 650 μL Saline)
Injection Formulation 7: Ethanol : Cremophor : Saline = 10: 10 : 80 (i.e. 100 μL Ethanol 100 μL Cremophor 800 μL Saline)
Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline
Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH 900 μL Corn oil)
Injection Formulation 10: EtOH : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH 400 μLPEG300 50 μL Tween 80 450 μL Saline)


Oral Formulations
Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium)
Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose
Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals).
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Oral Formulation 3: Dissolved in PEG400
Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose
Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose
Oral Formulation 6: Mixing with food powders


Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 3.3476 mL 16.7381 mL 33.4762 mL
5 mM 0.6695 mL 3.3476 mL 6.6952 mL
10 mM 0.3348 mL 1.6738 mL 3.3476 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.

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What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:
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Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
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In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation:Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

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