用于基因和抗癌药物控制释放高分子材料研究用于基因和抗癌药物控制释放高分子材料研究卓仁禧卓仁禧 院士院士生物医用高分子材料教育部重点实验室生物医用高分子材料教育部重点实验室武汉大学化学与分子科学学院武汉大学化学与分子科学学院一一. 高分子基因治疗载体研究高分子基因治疗载体研究病毒载体和非病毒载体的比较病毒载体和非病毒载体的比较效率低效率低安全安全容易制备，储存和质量控制容易制备，储存和质量控制传递的传递的DNADNA大小从大小从2020个碱基对个碱基对到到几几十万个碱基对十万个碱基对非病毒非病毒载体载体安全隐患安全隐患DNADNA大小受限制大小受限制免疫原性免疫原性高效高效病毒病毒载体载体缺点缺点优点优点载体载体 非病毒载体非病毒载体 阳离子脂质体阳离子脂质体 高分子高分子: : 阳离子高分子阳离子高分子 水溶性非离子高分子水溶性非离子高分子 高分子基质高分子基质 常用的聚阳离子基因载体常用的聚阳离子基因载体Poly-(4-amino-butyl)-L-glycolic acidS W Kim, Utah UnivPoly-L-lysinePolyethylenimines (PEI)Behr J P, FranceDendrimerSzoka UCSF & Baker J Univ MichPolyphosphoester and PolyphosphoamideLeong K W, Johns Hopking UnivLanger R, MIT从新的起始核合成聚酰胺胺树型高分子基因载体从新的起始核合成聚酰胺胺树型高分子基因载体Dendrimer GT5Transfection of HEK 293 cells with pRE Luc/dendrimer GT complexes合成的树型高分子的转染效率与目前最好的阳离子载体合成的树型高分子的转染效率与目前最好的阳离子载体PEI相当，但是比相当，但是比PEI的毒性低得多的毒性低得多Cytotoxicity of dendrimer GT3GT5 measured by the MTT assay. PEI and PLL were used as controls 肝细胞靶向基因载体肝细胞靶向基因载体 1.0E+041.0E+051.0E+061.0E+071.0E+081.0E+090246810N/PRLU/mg proteinGT5GT5-Gal 5%Transfection of HepG2 cells with pRE LucTransfection of NIH 3T3 cells with pRE Luc阳离子聚磷酸酯基因载体阳离子聚磷酸酯基因载体PPA-DPAGal-PPAGal-PEG-PPAliverspleenlungkidneyheart103105104102RLU/mg proteinPPAGal-PPAGal-PEG-PPA Luciferase Expression in mouse after intraportal vein injection of complexes containing 50 g plasmid二二 . 药物控释生物可降解高分子材料药物控释生物可降解高分子材料研究研究聚酯聚酯(聚乳酸聚乳酸,聚乙醇酸及其共聚物聚乙醇酸及其共聚物;聚己内酯聚己内酯,聚羟基丁酸及其共聚物聚羟基丁酸及其共聚物)聚酸酐聚酸酐聚碳酸酯及其共聚物聚碳酸酯及其共聚物聚磷酸酯及其共聚物聚磷酸酯及其共聚物纳米药物控制释放纳米药物控制释放温度敏感快速响应温度敏感快速响应PNIPA水凝胶水凝胶Poly(lactide-co-glycolide)PLGAPolylactidePLAPolyglycolidePGA1.聚碳酸酯及其共聚物聚碳酸酯及其共聚物BTMCPTMC卓卓仁仁禧禧, ,王王旭旭立立, ,刘刘立立建建. . 苄苄氧氧基基三三亚亚甲甲基基碳碳酸酸酯酯及及其制备方法。中国专利其制备方法。中国专利 ZL 01 1 14284.7 C07D319 /04ZL 01 1 14284.7 C07D319 /04 卓仁禧，王旭立，刘立建。聚（取代基三亚甲基碳酸卓仁禧，王旭立，刘立建。聚（取代基三亚甲基碳酸酯）及其制备方法和用途。酯）及其制备方法和用途。ZL01114285.5 ZL01114285.5 In vitro cytotoxicity of PBTMC and PHTMC COS7 cells. Incubation time: 24 h. Temp.: 37oCBTMCTMCPoly(HTMC-co-TMC)Sn(Oct)2150oCDeprotectionDependenceofhydrophilicityoncopolymercontentInvitrodegradabilityofcopolymers,PBSpH7.4，37oC0246810121416182022242628020406080100P(HTMC-co-TMC) 10/90PTMCP(HTMC-co-TMC) 50/50Weight Loss (%)Time (day)PHTMC100%-OHwithout-OH50%-OH10%-OH5-Fureleaseprofilesofcopolymers,PBSpH7.4，37oCZhang Y, Zhuo R X, Synthesis and drug release behavior of poly (trimethylene carbonate)poly (ethylene glycol)poly (trimethylene carbonate) nanoparticles, Biomaterials (In press) PTETtriblockcopolymer纳米药物控制释放纳米药物控制释放Synthesis and properties of PTET triblock copolymers Particle sizes, drug loading content, loading efficiency, and yield of the PTET polymeric nanoparticlesPolymeric nanoparticles were prepared by the dialysis technique.Drug: methotrexate (MTX)TEM image of PTET-7 nanoparticles loaded methotrexate (MTX)Effect of molecular weight of PEG in the copolymers on the MTX release ratePBS, pH =7.4, 37 C.PEG 6000PEG 4000PEG 2000Effect of content of PEG block in the copolymers on the MTX release ratePBS, pH =7.4, 37 C.PEG: 6.17 wt%PEG: 24.12 wt%PEG: 28.94 wt%PEG: 54.26 wt%温度敏感快速响应温度敏感快速响应PNIPA水凝胶水凝胶A 混合溶剂法混合溶剂法B 相分离法相分离法C 使用成孔剂使用成孔剂:如如PEGD 形成互穿网络形成互穿网络在温度敏感水凝胶领域发在温度敏感水凝胶领域发表表SCI论文论文30多篇。多篇。靶向性抗癌药物靶向性抗癌药物 5-Fu抗癌药物抗癌药物PM liver-targeting group肝靶向高分子抗癌药物肝靶向高分子抗癌药物肝靶向高分子抗癌药物肝靶向高分子抗癌药物5-Fu-(99mTcDTPA)-PAEA-PM注射后不同时间在大鼠体内各器官的分布注射后不同时间在大鼠体内各器官的分布62.5g/mLBel-7204体外凋亡率体外凋亡率:51%135g/mLBel-7204体外凋亡率体外凋亡率:62%Control肝靶向高分子抗癌药物肝靶向高分子抗癌药物5-Fu-PAEA-PM对人体肝癌细胞对人体肝癌细胞(Bel-7204)的体外凋亡实验的荧光照片的体外凋亡实验的荧光照片P(TMC-co-EEP)Porcine Pancreas Lipase (PPL) Candida Rugosa Lipase (CL)Al(OiPr)3酶催化开环聚合反应酶催化开环聚合反应Ring-opening copolymerization of TMC and EEP catalyzed by enzymesMw/MnMnYield(%)Time(d)Molarratio(TMC:EEP)E(mg/mmol)Lipase-500-210:510-500-210:110-1.69641042.1210:510CL1.83644062.0210:310CL2.23786075.6210:110CL2.18323019.8210:510PPL1.66802060.1210:310PPL1.711025082.8210:110PPL2.63573060.2410:210CL2.97601057.0310:210CL1.99683050.2110:210CL2.75343065.2410:210PPL1.91398072.3310:210PPL2.47597056.2110:210PPL1.81532860.2210:250CL1.87650057.6210:225CL2.27649058.3210:210CL2.43623036.5210:225PPL2.31933068.9210:210PPLPolymerizationcatalyzedbyPPLimmobilizedonsilicamicroparticles(PISM)EffectoflipaseconcentrationonMnandyield0.00.51.01.52.02.55000100001500020000250003000035000400004500050000Concentration(wt%)Molecular weight3035404550556065707580859095100Yield(% )MnYieldTimedependenceofMnandyieldduringpolymerization1020304050601000012000140001600018000200002200024000Time(h)Mn404550556065707580859095100YieldMnYieldDependenceofMnandyieldontheimmobilizedlipasePPLrecyclingtimeRecyclingTimeLipaseConc.(wt%)MnMw/MnYield(%)I1.0147001.9270II1.0254001.7775III1.0308002.1181IV1.0452002.0178VI1.0617001.9483VII1.0630002.5381VIII1.0640002.2072VIII0.1874002.0669Reactiontemperature:100.Reactiontime:24hPolymerizationofDTCcatalyzedbyPPLAimmobilizedonsilicamicroparticlesBimmobilizedonsilicananoparticlesRecycling time of IMPPL vs Mn of Poly(DTC) obtained at 130C for 4 day-polymerization Poly (DTC)The original IMPPL The first recycling IMPPLThe second recycling IMPPL The third recycling IMPPL 1752cm-1致谢致谢武汉大学生物医用高分子材料教育部重点实验室的教师、武汉大学生物医用高分子材料教育部重点实验室的教师、 博博士研究生、硕士研究生士研究生、硕士研究生国家科技部国家科技部973项目项目国家自然科学基金重点项目、面上项目资助国家自然科学基金重点项目、面上项目资助