Description | HygromycinBisanaminoglycosideantibioticactiveagainstprokaryoticandeukaryoticcells. |
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IC50&Target | Target:Antibacterial;Antifungal[1] |
InVitro | HygromycinB,anaminocyclitolantibioticthatstronglyinhibitsboth70Sand80Sribosomes,issynthesizedbyStreptomyceshygroscopicus[1].HygromycinBat0.38mMconcentrationcompletelyhaltsyeastcellgrowthinrichmedia,presumablybypreventingproteinsynthesisbycytoplasmicribosomes.Polypeptidesynthesisincell-freeextractsfromrabbitreticulocytes,wheatgermandyeastisstronglyblockedbylowconcentrationsofhygromycinB.TheantibioticinhibitspeptidechainelongationbyyeastpolysomesbypreventingelongationfactorEF-2-dependenttranslocation.TheinhibitionoftranslocationbyhygromycinBmightresultfromthestABIlizationofpeptidyl-tRNAboundtotheribosomalacceptorsite[2]. |
InVivo | HygromycinBinhibitsproteinsynthesisbyblockingribosomaltranslocationwithoutcausingsignificantmisreADInginvivo[3].ConstitutiveexpressionofthebacterialhygRgeneintransgenicmiceinvivoconfersresistancetohygromycinB[4]. |
References |
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AnimalAdmiNISTration [4] | HygromycinBisdissolvedinsterilewater.ThemiceC57BL/6J-TgN(pPWL512hyg)1EmscarryinghygRaretreatedwithasingledoseofhygromycinBi.p.atdosesthatstartsat2.7mg/kgandincreasesby50%foreachconsecutivedose.Controlwild-typeC57BL/6Jmicearetreatedwiththesamevolumeofsterilesaline.Totalvolumeinjectedis0.5mL.Thehealthstatusandbodyweightsofanimalsaremonitoreddailyfor10consecutivedays[4].MCEhasnotindependentlyconfirmedtheaccuracyofthesemethods.Theyareforreferenceonly. References |
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