SIBA
Based on 1 Customer Validation
SIBA (5'-Isobutylthioadenosine) is a transmethylation inhibitor (SAH (HY-19528) analogue), with potent anti-proliferative activity. SIBA reversibly inhibits the production of HSV-1 by blocking methylation, specifically by blocking the 5' end-capping of viral mRNA. SIBA also inhibits the growth of tumour cells in vitro and metastatic spread in vivo. SIBA can be used in cancer, HSV-1 infection and anti-malaria studies.
For research use only. We do not sell to patients.
- Purity: 99.64%
- CAS No.: 35899-54-8
- Formula: C14H21N5O3S
- Molecular Weight:339.41
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Storage:Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 2 years , -20°C, 1 year
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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
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Biological Activity
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Plasmodium |
HSV-1 |
SIBA (0.5 mM; 24-96 h) shows strong anti-proliferative activity against 3LL and RMS-J1 tumour cells[1].
SIBA (1 mM; 12, 24 h) reversibly inhibits HSV production in HEp2 cells (infected by HSV-1)[2].
SIBA inhibits protein synthesis by 98% after 10 h infection of HEp2 cells (infected by HSV-1)[2].
SIBA (1 mM; 8.5 h) inhibits protein synthesis and RNA methylation in HEp2 cells (infected by HSV-1)[2].
SIBA (0.5, 1.0 mM; 24, 48 h) inhibits the conversion of putrescine into spermidine and/or spermine and that this inhibition is a reversible one (interferes with polyamine biosynthesis, probably by blocking aminopropyltransferase)[3].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Cell Line:3 LL and RMS-J1 cells
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Concentration:0.5 mM
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Incubation Time:24-96 h
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Result:Inhibited 3LL and RMS-J1 tumor cell growth potently by 96% and 88%, respectively.
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Cell Line:HEp2 cells (infected by HSV-1)
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Concentration:1 mM
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Incubation Time:12, 24 h
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Result:Decreased virus production by 88.4 and 98.2% when at 12 and 24 h, respectively.
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Cell Line:HEp2 cells (infected by HSV-1)
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Concentration:1 mM
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Incubation Time:8.5 h
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Result:Reduced protein synthesis by 41.3% in normal medium and by 63.5% in medium poor in methionine.
Inhibited RNA methylation by 65.4%.
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Cell Line:chick embryo fibroblasts
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Concentration:0.5, 1.0 mM
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Incubation Time:24, 48 h
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Result:Inhibited the uptake of the radioactive diamine and that the inhibition was dose-dependent.
Markedly inhibited the formation of [14C]spermidine and [14C]spermine from [14C]putrescine.
Inhibited the growth of chick embryo fibroblasts mainly after exposure for 48 h.
SIBA (15 mg/kg; i.p.; thrice weekly for 4 weeks) inhibits metastatic spread of RMS-J1 cells in vivo[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:C57BL/6 female mice (4-8 weeks old)[1].
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Dosage:150 mg/kg
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Administration:Intraperitoneal injection; twice weekly for 3 weeks.
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Result:Significantly reduced the median number of lung metastases.
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Animal Model:Adult syngeneic Wistar AG rats (8-week-old; subcutaneously grafted with RMS-J1 cells)[1].
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Dosage:15 mg/kg
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Administration:Intraperitoneal injection; thrice weekly for 4 weeks.
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Result:Inhibited in vivo metastatic spread of RMS-J1 cells, and showed median numbers of lung metastatic nodules was 26.
Chemical Information
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CAS No. 35899-54-8
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Appearance Solid
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Molecular Weight 339.41
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Formula C14H21N5O3S
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Color Off-white to gray
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SMILES
O[C@@H]([C@H]([C@H](N1C=NC2=C1N=CN=C2N)O3)O)[C@H]3CSCC(C)C
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Synonyms
5'-Isobutylthioadenosine; 5'-Deoxy-5'-isobutylthioadenosine
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Powder -20°C 3 years 4°C 2 years In solvent -80°C 2 years -20°C 1 year
Solvent & Solubility
DMSO : ≥ 100 mg/mL (294.63 mM; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
* "≥" means soluble, but saturation unknown.
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. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.
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. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
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 (7.37 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 (7.37 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.
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.
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 (281 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)
- Portuguese - PT (393 KB)
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Handling Instructions (2659 KB)
References
[1]. F Breillout , et al. Association of SIBA treatment and a Met-depleted diet inhibits in vitro growth and in vivo metastatic spread of experimental tumor cell lines. Clin Exp Metastasis. Jan-Feb 1988;6(1):3-16. [Content Brief]
[2]. B Jacquemont, et al. Inhibition of viral RNA methylation in herpes simplex virus type 1-infected cells by 5' S-isobutyl-adenosine. J Virol. 1977 Apr;22(1):160-7. [Content Brief]
[3]. Lawrence F, et al. Effect of 5'-deoxy-5'-isobutylthioadenosine on putrescine uptake and polyamine biosynthesis by chick embryo fibroblasts. Biochem J. 1982 Jun 15;204(3):853-9. [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, 2 years; -20°C, 1 year. 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 |
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| DMSO | 1 mM | 2.9463 mL | 14.7314 mL | 29.4629 mL | 73.6572 mL |
| 5 mM | 0.5893 mL | 2.9463 mL | 5.8926 mL | 14.7314 mL | |
| 10 mM | 0.2946 mL | 1.4731 mL | 2.9463 mL | 7.3657 mL | |
| 15 mM | 0.1964 mL | 0.9821 mL | 1.9642 mL | 4.9105 mL | |
| 20 mM | 0.1473 mL | 0.7366 mL | 1.4731 mL | 3.6829 mL | |
| 25 mM | 0.1179 mL | 0.5893 mL | 1.1785 mL | 2.9463 mL | |
| 30 mM | 0.0982 mL | 0.4910 mL | 0.9821 mL | 2.4552 mL | |
| 40 mM | 0.0737 mL | 0.3683 mL | 0.7366 mL | 1.8414 mL | |
| 50 mM | 0.0589 mL | 0.2946 mL | 0.5893 mL | 1.4731 mL | |
| 60 mM | 0.0491 mL | 0.2455 mL | 0.4910 mL | 1.2276 mL | |
| 80 mM | 0.0368 mL | 0.1841 mL | 0.3683 mL | 0.9207 mL | |
| 100 mM | 0.0295 mL | 0.1473 mL | 0.2946 mL | 0.7366 mL |
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