当前位置:医学文献首页 >> 基础医学 >> 生物物理 >> 正文

脂质体前体制剂研究进展 2

来源:医学杂志 2007-01-29 07:10:17 

药物在冻干过程的渗漏问题,尤其对易分解的药物,可以不经过脂质体的制备过程,至今未见用此方法制备非蛋白类药物的报道,我们将对这方面做进一步的研究。

  冷冻干燥法制备脂质体一个更为突出的应用是[17]在免疫原脂质体共轭物的制备上。我们知道脂质体作为蛋白质(如疫苗等)载体已越来越成为人们研究的重点[18],因为脂质体无毒,可生物降解且没有抗原性。为了省去每次都要制备脂质体的麻烦,可以先制备表面含有配基官能团的脂质体,然后进行冷冻干燥,在水化时免疫原蛋白迅速以共价键结合于脂质体上。这样带有配基的脂质体前体可以作为免疫原的空白载体(或溶剂),就可随时制备稳定性好、活性毫无损失的免疫原脂质体共轭物。相同原理下,在疫苗人工合成及药物靶向作用方面[19],冷冻干燥法制备脂质体前体也有着广泛的应用。国外一种称为MTP-PE(mu-ramyltripeptidephosphatidylethanolamine)冻干脂质体已经进入了Ⅱ期临床。

  冷冻干燥法适用于工业生产,而且容易达到无菌要求,为脂质体在临床上的应用创造了条件。我们相信,随着科学技术的不断前进,脂质体作为一种新型制剂必将会克服其在应用上的种种不利因素,成为具有广泛发展前景及较高药用价值的制剂。

  参 考 文 献

  1GuoLSS.NovelAntifungalDrugDelivery:stableAmpho-tericinBCholesterylSulfateDisk.IntJPharm,1991,75:45

  2 BanghamAD,StandishMM,WatkinsJCJ.DiffusionofUni-valentIonsacrossthelamellaeofSwollenPhospholipids.JMonBiol,1965,13:238

  3 PayleNI,BrowningI,HynesCA.Characterizationofprolip-some.JPharmSci,1986,75(4):330

  4 杨志军,日野知证,川岛嘉明.中国药科大学学报,1993,24(3):161

  5 MariaB,RichardME.Effectofsugaralcoholsanddisaccha-ridesininducingthehexagonalphaseandalteringmembraneproperties:implicationsfordiabetesmellitus.BiochimBio-physActa,1988,943:485

  6 ParkYS,HuangL.Cryoprotectiveactivityofsyntheticgly-cophospholipidsandtheirinteractionswithtrehalose.BiochimBiophysActa,1992,1124:241

  7 CroweLM,RobbertM,CroweJH,etal.EffectsofCarbohy-dratesonmembranestabilityatlowwateractivities.BiochimBiophysActa,1984,769:141

  8 CroweLM,WomershyC,PeidD,etal.Prevetionoffusionandleakageinfreeze-driedliposomebycarbohydrates.BiochimBiophysActa,1986,861:131

  9 CroweJH,CroweLM,ChapmanD.InfraredSpectroscopicStudiesonInteractionsofWaterandCarbohydrateswithaBio-logicalMembrane.ArchBiochemBiophys,1984,232:400

  10 CroweLM,CroweJH,AppelL,etal.PreservationofFreeze-DriedLiposomesbyTrehalose.ArchBiochemBio-phys,1985,242:240

  11 CroweJH,WhittamMA,CroweLM.InteractionsofPhos-pholipidMonolayerswithCarbohydrates.BiochimBiophysActa,1984,769:151

  12 TalsmaH,SteenbergenV,CrommelinDJA.Thecryop-reservationofliposomes:3.Almostcompleteretentionofawater-solublemarkerinsmallliposomesinacryoprotectantcontainingdispersionafterafreezing/thawingcycle.IntJPharm,1991,77:119

  13 HarriganPR,MaddenTD,CullisPR.ProtectionofLipo-someduringDehydrationorFreezing.ChemsPhysLipids,1986,52:139

  14 CroweJH,CroweLM.FactorsaffectingthestabilityofdryLiposomes.BiochimBiophyActa,1988,939:327

  15 StraussG,SchurtenbergerP,HauserH.Theinteractionofsaccharideswithlipidbilayervesicle:stabilizationduringfreeze-thawingandfreeze-drying.BiochimBiophysActa,1986,858:169

  16 MaddenTM,BallyMB,HopeML,etal.ProtectionoflargeunilamellarVesiclesbytrehaloseduringdehydration:retentionofvesiclecontents.BiochimBiophysActa,1985,817:67

  17 OhsakaT,MiuraH,HaradaK.ANovelMethodforprepa-rationLiposomewithaHighcapacitytoencapsulateproteinousdrugs:freeze-dryingMethod.chempharmBull,1984,32(6):2442

  18 FriedeM,VanRegenmortelMHV,SchuberF.LyophilizedLiposomesasShelfItemsforthePreparationofImmunogenicLiposome-PeptideConjugates.AnalBiochem,1993,211:117

  19 PhillipsNC,MorasML,BernardJM.ActivationofAlveolarMacrophageTumoricidalAcivityandEradicationofExperi-mentalMetastasesbyFreeze-DriedLiposomesContainingaNewLipophilicMuramylPipetideDerivative.CancerRe-search,1985,45:128

[1] [2]
今日推荐
返回频道首页
相关图片

热点文章