Ionomycin calcium
Based on 5 publication(s) in Google Scholar
Ionomycin calcium (SQ23377 calcium) is a potent, selective calcium ionophore and an antibiotic produced by Streptomyces conglobatus. Ionomycin calcium (SQ23377 calcium) is highly specific for divalent cations (Ca>Mg>Sr=Ba). Ionomycin (SQ23377) promotes apoptosis. Ionomycin calcium (SQ23377 calcium) also induces the activation of protein kinase C (PKC).
For research use only. We do not sell to patients.
- Purity: 98.32%
- CAS No.: 56092-82-1
- Formula: C41H70CaO9
- Molecular Weight:747.07
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Storage:
4°C, sealed storage, away from moisture
* In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)
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Biological Activity
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Chemical Information
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Solvent & Solubility
- Purity & Documentation
- References
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Help & FAQs
Publications Citing Use of MedChemExpress (MCE) Ionomycin calcium
MoreAll Calcium Channel Isoforms
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Biological Activity
Description
IC50 & Target
Calcium ionophore[1]
In Vitro
Ionomycin is a Calcium ionophore and an antibiotic produced by Streptomyces conglobatus[1].
Addition of 2 μM Ionomycin to LCLC 103H cells causes an instantaneous increase in intracellular Ca2+ concentration from 50 to 180 nM. DNA and protein analysis in Ionomycin-treated cultures revealed DNA fragmentation and PARP cleavage to an 85-kDa fragment typical of caspase-mediated apoptosis. Necrosis could be detected in ~1-5% of the Ionomycin treated cells. Caspase activation in whole cells was followed by monitoring the increase in activity against Ac-DEVD-amc following Ionomycin treatment[2].
Ionomycin-mediated cleavage and exosome release. Following Ionomycin exposure, medium conditioned by SKOV3ip cells had increased amounts of exosomes containing the L1-32 cleavage fragment[4].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Clinical Trial
| NCT Number | Sponsor | Condition | Start Date |
Phase
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|---|---|---|---|---|
| NCT01329991 | Plexxikon| | 2011-05 | PHASE1 |
Chemical Information
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CAS No. 56092-82-1
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Appearance Solid
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Molecular Weight 747.07
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Formula C41H70CaO9
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Color White to off-white
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SMILES
O=C([O-])CC[C@@H](C)C[C@H](C)C[C@H](C)C(/C=C([O-])/[C@H](C)C[C@H](C)C/C=C/[C@@H](C)[C@@H](O)[C@@H](C)[C@@H](O)C[C@@H]1CC[C@]([C@@H]2O[C@](C)([C@H](O)C)CC2)(C)O1)=O.[Ca+2]
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Synonyms
SQ23377 calcium
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Structure Classification
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Initial Source
Streptomyces conglobatus
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
4°C, sealed storage, away from moisture
* In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)
Publications (5)
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Journal Impact Factor
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Most Recent
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Cell Host Microbe
Microbiota-derived urocanic acid triggered by tyrosine kinase inhibitors potentiates cancer immunotherapy efficacy. [Abstract]2025 Jun 11;33(6):915-931.e9. PMID: 40441145 -
OncoImmunology
Dipeptidyl peptidase 4 inhibition sensitizes radiotherapy by promoting T cell infiltration. [Abstract]2023 Oct 12;12(1):2268257. PMID: 37849962 -
Int Immunopharmacol
Fecal microbiota transplantation regulates the microbiota-gut-spinal cord axis to promote recovery after spinal cord injury. [Abstract]2024 Jan 5:126:111212. PMID: 37979452 -
J Cell Sci
Non-muscle myosin IIA and IIB differentially affect the traffic and signalling of the thrombopoietin receptor. [Abstract]2025 Nov 17:jcs.264186. PMID: 41243451 -
Immunobiology
The role of CD24hiCD27+ regulatory B cells in human chronic rhinosinusitis with/without nasal polyps. [Abstract]2024 Nov;229(6):152854. PMID: 39340956
Solvent & Solubility
In Vitro:
DMSO : 50 mg/mL (66.93 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 (sealed storage, away from moisture). 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 (sealed storage, away from moisture). 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 (3.35 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 (3.35 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 (sealed storage, away from moisture)
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.
Purity & Documentation
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Data Sheet (271 KB)
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SDS (393 KB)
- English - EN (393 KB)
- Français - FR (393 KB)
- Deutsch - DE (393 KB)
- Norwegian - NO (393 KB)
- Español - ES (393 KB)
- Swedish - SV (393 KB)
- Italian - IT (393 KB)
- Korean - KR (393 KB)
- Portuguese - PT (393 KB)
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Handling Instructions (2659 KB)
References
[1]. Liu C,et al. Characterization of ionomycin as a calcium ionophore. J Biol Chem. 1978 Sep 10;253(17):5892-4. [Content Brief]
[2]. Chatila T, et al. Mechanisms of T cell activation by the calcium ionophore ionomycin. J Immunol. 1989 Aug 15;143(4):1283-9. [Content Brief]
[3]. Gil-Parrado S, et al. Ionomycin-activated calpain triggers apoptosis. A probable role for Bcl-2 family members. J Biol Chem. 2002 Jul 26;277(30):27217-26. [Content Brief]
[4]. Stoeck A, et al A role for exosomes in the constitutive and stimulus-induced ectodomain cleavage of L1 and CD44. Biochem J. 2006 Feb 1;393(Pt 3):609-18. [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 (sealed storage, away from moisture). 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 | 1.3386 mL | 6.6928 mL | 13.3856 mL | 33.4641 mL |
| 5 mM | 0.2677 mL | 1.3386 mL | 2.6771 mL | 6.6928 mL | |
| 10 mM | 0.1339 mL | 0.6693 mL | 1.3386 mL | 3.3464 mL | |
| 15 mM | 0.0892 mL | 0.4462 mL | 0.8924 mL | 2.2309 mL | |
| 20 mM | 0.0669 mL | 0.3346 mL | 0.6693 mL | 1.6732 mL | |
| 25 mM | 0.0535 mL | 0.2677 mL | 0.5354 mL | 1.3386 mL | |
| 30 mM | 0.0446 mL | 0.2231 mL | 0.4462 mL | 1.1155 mL | |
| 40 mM | 0.0335 mL | 0.1673 mL | 0.3346 mL | 0.8366 mL | |
| 50 mM | 0.0268 mL | 0.1339 mL | 0.2677 mL | 0.6693 mL | |
| 60 mM | 0.0223 mL | 0.1115 mL | 0.2231 mL | 0.5577 mL |
Ionomycin calcium Related Classifications
HY-13434A Related Classifications
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