| Size | Price | Stock | Qty |
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| 25mg |
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| 50mg |
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| 100mg |
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| 250mg |
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| 500mg |
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| ln Vitro |
Cl-amidine is a bioavailable haloacetamidine-based drug that inhibits all active PAD isozymes with nearly identical efficacy (kinact/KI=13,000 M-1·min-1 for PAD4) [1]. TK6 lymphoblastoid cells and HT29 colon cancer cells underwent dose-dependent apoptosis in response to Cl-amidine (0, 5, 10, 15, 20, 25, 50 μg/mL, 24 h). It's interesting to note that Cl-amidine-induced apoptosis does not fully kill the colon cancer cell line HT29 [2]. The enzymatic activity of PADs is dependent on the active site cysteine, which is covalently modified by clonidine, rendering PADs permanently inactive [4].
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| ln Vivo |
Cl-amidine (75 mg/kg, intraperitoneal injection once daily) can prevent and cure colitis in mice produced by DSS [2]. Histological scores can be significantly lowered in a dose-dependent manner with clonidine (5, 25, 75 mg/kg, oral gavage, once daily) [2].
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| Cell Assay |
Apoptosis analysis[2].
Cell Types: TK6 lymphoblastoid cells and HT29 colon cancer cells. Tested Concentrations: 0, 5, 10, 15, 20, 25, 50 μg/mL. Incubation Duration: 24 hrs (hours). Experimental Results: The induction of apoptosis was dose-dependent. |
| Animal Protocol |
Animal/Disease Models: C57BL/6 mice (8-12 weeks old, DSS colitis mouse model) [2].
Doses: 75 mg/kg. Management: IP one time/day. Experimental Results: Inhibition of PAD activity in vivo, protein citrullination, and PAD levels in the colon. Animal/Disease Models: C57BL/6 mice (8-12 weeks old, DSS colitis mouse model) [2]. Doses: 5, 25, 75 mg/kg. Route of Administration: po (oral gavage), one time/day. Experimental Results: Resultant in Dramatically lower histological scores. |
| References |
[1]. Yuan Luo, et al. Inhibitors and Inactivators of Protein Arginine Deiminase 4: Functional and Structural Characterization. Biochemistry. 2006 Oct 3; 45(39): 11727–11736.
[2]. Chumanevich AA, et al. Suppression of colitis in mice by Cl-amidine: a novel peptidylarginine deiminase inhibitor. Am J Physiol Gastrointest Liver Physiol. 2011 Jun;300(6):G929-38. [3]. Witalison EE, et al. Molecular targeting of protein arginine deiminases to suppress colitis and prevent colon cancer. Oncotarget. 2015 Nov 3;6(34):36053-62. [4]. Biron BM, et al., Cl-Amidine Prevents Histone 3 Citrullination and Neutrophil Extracellular Trap Formation, and Improves Survival in a Murine Sepsis Model. J Innate Immun. 2017;9(1):22-32. [5]. Bryan Knuckley, et al. Substrate Specificity and Kinetic Studies of PADs 1, 3, and 4 Identify Potent and Selective Inhibitors of Protein Arginine Deiminase 3. Biochemistry. 2010 Jun 15;49(23):4852-63. |
| Molecular Formula |
C14H19N4O2CL
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|---|---|
| Molecular Weight |
310.779
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| CAS # |
913723-61-2
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| Related CAS # |
Cl-amidine hydrochloride;1373232-26-8;D-Cl-amidine hydrochloride;Cl-amidine TFA;1043444-18-3;D-Cl-amidine;1404060-15-6
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| SMILES |
O=C(N[C@H](C(N)=O)CCCNC(CCl)=N)C1=CC=CC=C1
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| 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)
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| 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
Injection Formulation 1: DMSO : Tween 80： Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution → 50 μL Tween 80 → 850 μL Saline)(e.g. IP/IV/IM/SC) *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 : PEG300 ：Tween 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). View More
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)] 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). View More
Oral Formulation 3: Dissolved in PEG400 (Please use freshly prepared in vivo formulations for optimal results.) |
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| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 3.2177 mL | 16.0886 mL | 32.1771 mL | |
| 5 mM | 0.6435 mL | 3.2177 mL | 6.4354 mL | |
| 10 mM | 0.3218 mL | 1.6089 mL | 3.2177 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.
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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