Celastramycin A
Based on 1 Customer Validation
Celastramycin A is an antibiotic isolated from Streptomyces MaB-QuH-8, which exhibits antimicrobial activity against series of gram-negative bacteria and mycobacteria, with MICs between 0.05-3.1 μg/ml. Celastramycin A exhibits immunosuppressing efficacy in ex vivo Drosophila through immune deficiency pathway (IC50 of 0.008 μg/ml), inhibits the immunoresponse in human innate immunity through TNF-α signaling, inhibits IL-8 production in HUEVCs with IC50 of 0.06 μg/ml.
For research use only. We do not sell to patients.
- Purity : 98.23%
- CAS No.: 188988-62-7
- Formula: C17H18Cl3NO3
- Molecular Weight:390.69
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Storage:
4°C, stored under argon
* In solvent : -80°C, 6 months; -20°C, 1 month (stored under argon)
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Tel: 609-228-6898 E-mail: [email protected] [email protected]
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Biological Activity
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Chemical Information
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Solvent & Solubility
- Protocols
- Purity & Documentation
- References
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Help & FAQs
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Biological Activity
Description
Chemical Information
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CAS No. 188988-62-7
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Appearance Solid
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Molecular Weight 390.69
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Formula C17H18Cl3NO3
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Color Off-white to light yellow
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SMILES
O=C(C1=C(O)C(CCCCCC)=CC(Cl)=C1O)C2=CC(Cl)=C(Cl)N2
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Structure Classification
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Initial Source
Drosophila
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
4°C, stored under argon
* In solvent : -80°C, 6 months; -20°C, 1 month (stored under argon)
Solvent & Solubility
In Vitro:
DMSO : 100 mg/mL (255.96 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
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, 6 months; -20°C, 1 month (stored under argon). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
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, 6 months; -20°C, 1 month (stored under argon). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
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.
Add each solvent one by one: 10% DMSO 40% PEG300 5% Tween-80 45% Saline
Solubility: ≥ 2.5 mg/mL (6.40 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.
Add each solvent one by one: 10% DMSO 90% (20% SBE-β-CD in Saline)
Solubility: ≥ 2.5 mg/mL (6.40 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:
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Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
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%DMSO +
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
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%+
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+%Tween-80 + +
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%Saline +
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).
Working solution concentration: 0.22 mg/mL
Method for preparing stock solution: mg drug dissolved in μL DMSO. Stock solution concentration: mg/mL. * In solvent : -80°C, 6 months; -20°C, 1 month (stored under argon)
1. Take μL DMSO stock solution;
2. Add μL .
μL , mix evenly;
3. Then add μL Tween 80, mix evenly;
4. Then add μL
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.
Protocols
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Research Protocol for Infectious Diseases
Infectious-disease experiments test how pathogens interact with host barriers, innate immune receptors, inflammatory signaling, pathogen replication, and tissue injury; pattern-recognition receptors such as TLRs, RIG-I-like receptors, NOD-like receptors, and inflammasomes detect microbial molecules and activate NF-κB, interferon, and cytokine responses. The central hypothesis is that infection severity reflects the balance between pathogen burden and host response: protective inflammation restricts pathogen growth, whereas excessive or mislocalized inflammation contributes to tissue damage and disease phenotype. Unresolved questions include which host pathways are protective versus pathogenic, why some infection models fail to translate to human disease, and which combined readouts best predict clinically relevant infection outcomes.
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Cell Cytotoxicity Assay
Cytotoxicity assays are usually based on the assessment of cell membrane damage, which can also be indirectly detected by measuring cell viability. Detection methods include MTT assay, CKK-8 assay, LDH assay and ATP assay, etc.
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Gram Staining of Tissue Sections
Gram staining of tissue sections is a histochemical technique used to differentiate Gram-positive and Gram-negative bacteria within histological specimens based on differences in bacterial cell wall structure and dye retention, adapted from classical bacteriological Gram staining into tissue-compatible “histological Gram stain” variants. In tissue applications, modifications of the Brown-Hopps and Brown-Brenn methods are commonly used to improve differentiation of microorganisms embedded within host connective tissue and to reduce overstaining or loss of Gram-negative signal, which are known limitations of earlier approaches. The principle relies on crystal violet-iodine complex retention in Gram-positive organisms and subsequent decolorization and counterstaining steps that allow contrast visualization of Gram-negative organisms against tissue background.
Purity & Documentation
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Data Sheet (271 KB)
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SDS (252 KB)
- English - EN (252 KB)
- Français - FR (252 KB)
- Deutsch - DE (252 KB)
- Norwegian - NO (252 KB)
- Español - ES (252 KB)
- Swedish - SV (252 KB)
- Italian - IT (252 KB)
- Korean - KR (252 KB)
- Portuguese - PT (252 KB)
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Handling Instructions (2659 KB)
References
[1]. Pullen C, et al., New and bioactive compounds from Streptomyces strains residing in the wood of Celastraceae. Planta. 2002 Nov;216(1):162-7. [Content Brief]
[2]. Kikuchi H, et al., Revised structure and synthesis of celastramycin a, a potent innate immune suppressor. Org Lett. 2009 Apr 16;11(8):1693-5. [Content Brief]
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, 6 months; -20°C, 1 month (stored under argon). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
| Optional Solvent | Concentration Solvent Mass | 1 mg | 5 mg | 10 mg | 25 mg |
|---|---|---|---|---|---|
| DMSO | 1 mM | 2.5596 mL | 12.7979 mL | 25.5957 mL | 63.9894 mL |
| 5 mM | 0.5119 mL | 2.5596 mL | 5.1191 mL | 12.7979 mL | |
| 10 mM | 0.2560 mL | 1.2798 mL | 2.5596 mL | 6.3989 mL | |
| 15 mM | 0.1706 mL | 0.8532 mL | 1.7064 mL | 4.2660 mL | |
| 20 mM | 0.1280 mL | 0.6399 mL | 1.2798 mL | 3.1995 mL | |
| 25 mM | 0.1024 mL | 0.5119 mL | 1.0238 mL | 2.5596 mL | |
| 30 mM | 0.0853 mL | 0.4266 mL | 0.8532 mL | 2.1330 mL | |
| 40 mM | 0.0640 mL | 0.3199 mL | 0.6399 mL | 1.5997 mL | |
| 50 mM | 0.0512 mL | 0.2560 mL | 0.5119 mL | 1.2798 mL | |
| 60 mM | 0.0427 mL | 0.2133 mL | 0.4266 mL | 1.0665 mL | |
| 80 mM | 0.0320 mL | 0.1600 mL | 0.3199 mL | 0.7999 mL | |
| 100 mM | 0.0256 mL | 0.1280 mL | 0.2560 mL | 0.6399 mL |
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