 Chemical Structure.png)
Physicochemical Properties
| Molecular Formula | C20H40N4O10 |
| Exact Mass | 496.274 |
| CAS # | 49863-47-0 |
| Related CAS # | G-418 disulfate;108321-42-2 |
| PubChem CID | 123865 |
| Appearance | Typically exists as solid at room temperature |
| Density | 1.47 g/cm3 |
| Boiling Point | 760.3ºC at 760 mmHg |
| Flash Point | 413.6ºC |
| LogP | -5.8 |
| Hydrogen Bond Donor Count | 10 |
| Hydrogen Bond Acceptor Count | 14 |
| Rotatable Bond Count | 6 |
| Heavy Atom Count | 34 |
| Complexity | 681 |
| Defined Atom Stereocenter Count | 15 |
| SMILES | CN[C@@H]1[C@@H](O)[C@@H](O[C@H]2[C@H](N)C[C@H](N)[C@@H](O[C@H]3O[C@H]([C@H](O)C)[C@@H](O)[C@H](O)[C@H]3N)[C@@H]2O)OC[C@]1(C)O |
| InChi Key | BRZYSWJRSDMWLG-DJWUNRQOSA-N |
| InChi Code | InChI=1S/C20H40N4O10/c1-6(25)14-11(27)10(26)9(23)18(32-14)33-15-7(21)4-8(22)16(12(15)28)34-19-13(29)17(24-3)20(2,30)5-31-19/h6-19,24-30H,4-5,21-23H2,1-3H3/t6-,7+,8-,9-,10-,11+,12+,13-,14-,15-,16+,17-,18-,19-,20+/m1/s1 |
| Chemical Name | (2R,3R,4R,5R)-2-[(1S,2S,3R,4S,6R)-4,6-diamino-3-[(2S,3R,4R,5S,6R)-3-amino-4,5-dihydroxy-6-[(1R)-1-hydroxyethyl]oxan-2-yl]oxy-2-hydroxycyclohexyl]oxy-5-methyl-4-(methylamino)oxane-3,5-diol |
| Synonyms | geneticin; 49863-47-0; G418; antibiotic G 418; antibiotic G-418; G-418; G 418; A08F5XTI6G; |
| 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) |
Biological Activity
| Targets | Aminoglycoside |
| ln Vitro | G-418 (500 μg/mL, 12 days) is employed in drug-resistant LNCaP cell screening [7]. |
| ln Vivo | Geneticin G418 (G-418 disulfate) (40 and 80 mg/kg) for three consecutive days are sufficient to eliminate all nontransfected T. brucei brucei parasites from infected mice[3]. |
| Cell Assay | Acanthamoeba is a widely distributed opportunistic parasite which causes a vision-threatening keratitis and a life-threatening encephalitis. The cyst stage of this amoeba is especially resistant to currently used therapeutics and so alternative agents are urgently required. Growing evidence supports the existence of a programmed cell death system (PCD) in Acanthamoeba and while some features are shared by higher eukaryote cells, others differ. It is hoped that by understanding these differences we can exploit them as targets for novel drug intervention to activate PCD pathways in the amoebae but not the invaded human tissue. Here, we use the aminoglycoside G418 to activate PCD in Acanthamoeba. This drug caused a shape change in the treated amoebae. Cells rounded up and contracted, and after 6 h fragments of cells resembling the 'apoptotic bodies' of vertebrate cells were observed. G418 causes an increase in intracellular calcium from a resting level of 24 nM to 60 nM after 6 h of treatment. Mitochondrial function as assayed by the ΔΨm reporting dye JC-1 and CTC a redox dye becomes inhibited during treatment and we have found that cytochrome c is released from the mitochondria. Cells stained with Hoechst showed first an alteration in chromatin structure and then a vesiculation of the nucleus with G418 treatment, although we found no obvious breakdown in genomic DNA in the early stages of PCD [5]. |
| Animal Protocol | Mouse RML and 22L prion inocula were obtained from RML- or 22L-infected CAD5 cells (34). The cells were grown to confluency, scraped in 1 ml PBS per 10 cm dish, and then homogenized using a Minilys bead homogenizer and CK14 homogenization tubes (Bertin). Benzonase (50 units/ml; EMD Millipore #70746-4) was added into the scraped culture, and then the culture was homogenized for three cycles of 30 s at maximum speed, with 5 min of incubation on ice between each cycle. Cell homogenates were then stored at −80 °C. Syrian hamster 263K prion inoculum was prepared in a similar way from 263K-infected CAD5-PrP−/− cells stably expressing HaPrP.[6] |
| References |
[1]. An antibiotic selection marker for nematode transgenesis. Nat Methods. 2010;7(9):721-723. [2]. A novel G418 conjugate results in targeted selection of genetically protected hepatocytes without bystander toxicity. Bioconjug Chem. 2007;18(6):1965-1971. [3]. Disialyl GD2 ganglioside suppresses ICAM-1-mediated invasiveness in human breast cancer MDA-MB231 cells. Int J Biol Sci. 2017;13(3):265-275. Published 2017 Feb 12. [4]. A new selective agent for eukaryotic cloning vectors. Am J Trop Med Hyg. 1980;29(5 Suppl):1089-1092. [5]. G418 induces programmed cell death in Acanthamoeba through the elevation of intracellular calcium and cytochrome c translocation. Parasitol Res. 2019 Feb;118(2):641-651. [6]. J Biol Chem. 2021 Sep;297(3):101073. doi: 10.1016/j.jbc.2021.101073. Epub 2021 Aug 12. [7]. S Bennett, et al. Reliable method of isolating transfected clones from the LNCaP human prostatic cell line. Biotechniques. 1997 Jul;23(1):66, 68, 70. |
| Additional Infomation | Geneticin (also known as G418) is an aminoglycoside antibiotic similar in structure to gentamicin B1, produced by Micromonospora rhodorangea. Geneticin blocks polypeptide synthesis by inhibiting the elongation step in both prokaryotic and eukaryotic cells and is commonly used in laboratory research to select genetically engineered cells. Resistance to Geneticin is conferred by the neo gene from Tn5 encoding an aminoglycoside 3‘-phosphotransferase, APH 3‘ II. |
Solubility Data
| Solubility (In Vitro) | H2O: ~50 mg/mL |
| 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 : 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). 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 : PEG300：Tween 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). 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.) |