Polyscience,Inc,成立于1961年,起家于化学但超越化学领域的美国制造商,总部位于宾夕法尼亚州沃灵顿,公司业务主要涵盖三大块:1.实验用产品:a)成千上万种具品牌特色的化合物和试剂,应用于实验室研究,组织学,电镜和解剖病理学以及其他诊断和生命科学研究;b)种类极其宽广的单体和聚合体,满足各方研究领域;c)有机/无机化合物,生物可降解材料,磁珠,荧光素,染料和特定抗体,以及常规蛋白包被颗粒(直径范围40nm~10mm)的全球首要制造工厂;d)顶端多聚化合物的供货中心,满足各种高性能工业领域需求,包括替代能源,汽车电子,国防&航空电子,便携式通信和计算机,医疗器械组装。2. 定制合成;3.cGMP生产服务。全球联系方式:1(800)523-2575;(215)343-6484。
BrandStory:
Me,Polyscience,Inc,Chemistrybeyondtheordinary
Me,Polyscience,Inc,HeadquarteredatWarrington,PA,Callvial1(800)523-2575
Me,Polyscience,Inc,Manufacturinghundredsofspecialtychemicalsandreagentsforlaboratoryresearch,Histology,LightMicroscopyandAnatomicPathologyaswellasotherclinicalandlifescienceapplications.
Me,Polyscience,Inc,Stockingawideportfolioofmonomersandpolymersforresearchapplications.
Me,Polyscience,Inc,Developedtobetheprimarysourcefororganic,inorganic,biodegradable,magnetic,fluorescent,dyedandspecificantibodyandgeneralproteincoatedparticlesindiametersspanningtherangeof40nmto10mm.
Me,Polyscience,Inc,Offeringinnovativepolymerproductstomeetthehighperformancerequirementsofavarietyofindustriesincludingalternativeenergy,automotiveelectronics,defense&aerospaceelectronics,portablecommunications&computing,medicaldeviceassembly,andmore.
——Written/EditedbyV.Shallan
SpecialProducts:
Polyethylenimine,Linear,Mw25,000 线性化聚乙烯亚胺(PEI25,000)
基本描述:
线性化聚乙烯亚胺PEI25,000,一种高电荷阳离子聚合物,非常容易结合于高电荷阴离子基质。工业应用上,线性化PEI可改善负电荷染料的物理外观,以调整染料的化学特性和增强染料与固相基质的黏附能力,常用作黏附增强剂,作用同多聚赖氨酸(poly-lysine);科研应用上,线性化PEI能与DNA或其他负电荷生物大分子简单结合,正是这一特性,使得成为一种非常行之有效的载体运输介质(Vectorcarrier),即转染试剂。
化学性质:
CASNO. | 9002-98-6,26913-06-4 |
Formula | (CH2CH2NH)n |
MolecularWeight | 25,000 |
MeltingPoint | 73-75º |
Solubility | SolubleIn: hotwater,coldwateratlowpH,methanol,andethanol. InsolubleIn: benzene,ethyletherandacetone |
Appearance | Whitetoyellowsolid |
订购信息:【原装进口,现货供应,产品有特价,欢迎咨询】
品牌 | 货号 | 名称 | 规格 | 目录价(元) |
Polyscience | 线性聚乙烯亚胺(MW 25,000) | 1g | 咨询 | |
另,提供更高转化效率的PEIMax40,000,自由基形式分子量相当于PEI25,000,研究证实其体外质粒DNA转染效率提高达21倍。 | ||||
Polyscience | 24765-2 | 线性聚乙烯亚胺盐酸盐Max,(MW 40,000)(EquivalenttoMw25,000inFreeBaseForm) | 2g | 咨询 |
使用方法【来源于:CSHprotocols,仅作交流学习】 :
1. Pour~450mLofMilli-QH2Ointoa500-mLglassbeaker.
2. Add500mgofPEItothebeakerwithstirring.
3. AddconcentratedHCldrop-wisetothesolutiontopH<2.0.
4. StiruntilthePEIisdissolved(~2-3h).MaintainthepH<2.0throughout.
Approximately800μLof12MHClwillberequiredforfullPEIdissolution.Theremaystillbesomesmallfiberparticlesthatwillnotdissolve.
5. AddconcentratedNaOHdrop-wisetothesolutiontopH7.0.
Approximately500μLof10MNaOHwillberequiredtoneutralizethePEIsolution.
6. Pourthesolutionintoa500-mLglasscylinder.Adjustthefinalvolumeto500mLwithMilli-QH2O.
7. Filter-sterilizethesolutionthrougha0.22-μmmembrane.
8. Storealiquotsofthedesiredvolumeat-20°C.
应用文献【基因转染用途】 :
ZhongZ,FeijenJ,LokMC,HenninkWE,ChristensenLV,YockmanJW,KimYH,KimSW.(2005). Lowmolecularweightlinearpolyethylenimine-b-poly(ethyleneglycol)-b-polyethyleniminetrIBLockcopolymers:synthesis,characterization,andinvitrogenetransferproperties.Biomacromolecules. 6(6):3440-8.
SharonE.Reed, ElizabethM.Staley, JohnP.Mayginnes, DavidJ.Pintel(2006). Transfectionofmammaliancellsusinglinearpolyethylenimineisasimpleandeffectivemeansofproducingrecombinantadeno-associatedvirusvectors. JournalofVirologicalMethods. 138(1–2):85–98.
PattiA.Longo, JenniferM.Kavran, Min-SungKim,and DanielJ.Leahy(2013)TransientMammalianCellTransfectionwithPolyethylenimine(PEI).MethodsEnzymol.529:227–240.
更高效的PEI聚乙烯亚胺聚合物转染试剂
PolyethylenimineHClMAX,Linear,Mw40,000
线性化聚乙烯亚胺盐酸盐 MAX(PEI40,000)
基本描述:
PolyethylenimineHClMAX,Linear,Mw40,000(PEI40,000)是热卖产品线性化聚乙烯亚胺PEI25,000的升级产品,不同之处在于1)完全水解(去乙酰化);2)PEI25,000的盐酸盐形式,具更高的水溶特性;3)含更长连续性乙烯亚胺(ethyleneimine)片段,其质子化氮水平比PEI25,000提高11%以上。本品经碱中和后,可转化为线性化自由胺(PEI),此时分子量正相当于25,000。
ThomasM,etal(2005)研究数据表明,去乙酰化的PEI40,000(PolyethylenimineMAX40,000)体外质粒DNA转染效率提高21倍,小鼠体内靶向效率达到10,000倍,随之肺部特异疗效显示增强1500倍。
化学性质:
CASNO. | 9002-98-6,26913-06-4 |
MolecularWeight | 40,000(~22,000freebase) |
Solubility | SolubleIn: Coldandroomtemperaturewater InsolubleIn: Commonorganicsolvents(ethanol,acetone,tetrahydrofuran) |
Appearance | Whitetooff-whitefreeflowingsolid |
订购信息:【原装进口,现货供应,产品有特价,欢迎咨询】
品牌 | 货号 | 名称 | 规格 | 促销价(元) |
Polyscience | 24765-2 | 线性聚乙烯亚胺盐酸盐Max,(MW 40,000)(EquivalenttoMw25,000inFreeBaseForm) | 2g | 咨询 |
另,提供基本型PEI25,000。 | ||||
Polyscience | 23966-1 | 线性聚乙烯亚胺(MW 25,000) | 1g | 咨询 |
应用文献【基因转染用途】 :
MannJF,McKayPF,ArokiasamyS,PatelRK,KleinK,ShattockRJ.(2013). PulmonarydeliveryofDNAvaccineconstructsusingdeacylatedPEIelicitsimmuneresponsesandprotectsagainstviralchallengeinfection.JControlRelease.170(3):452-9.
ThomasM,LuJJ,GeQ,ZhangC,ChenJ,KlibanovAM.(2005). Fulldeacylationofpolyethyleniminedramaticallyboostsitsgenedeliveryefficiencyandspecificitytomouselung. ProcNatlAcadSciUSA. 102(16):5679-84.