肾脏病理.ppt
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1、a a1,3,5(Col-IV)1,3,5(Col-IV)免疫荧光染色及其应用免疫荧光染色及其应用IV胶原合成胶原合成或降解障碍或降解障碍 ColCol-IVIV型胶原的分子结构与分布型胶原的分子结构与分布Type IV collagen chains form 3 forms of heterotrimeric units in basement membranes:a1a1a2,a3a4a5 a1a1a2,a3a4a5 and a5a5a6 a5a5a6 Col-Col-IVIV型胶原的分子结构与分布型胶原的分子结构与分布333COL4A6COL4A1COL4A4COL4A3COL4A2C
2、OL4A5555555130 pb450 pb333Xq222q3513q34Schematic representation of the distribution of type IV collagen gene on chromosomes 13,2 and XType IV collagen family comprises six distinct chains a1a1(IV)to a6a6(IV)encoded by six genes(COL4A1COL4A6)Type IV collagen chains form 3 forms of heterotrimeric unit
3、s in basement membranes:a1a1a2,a3a4a5 a1a1a2,a3a4a5 and a5a5a6 a5a5a6 a3a4a5 a3a4a5 type IV collagen network predominates in GBM 1、2 链链 TBM、肾球囊壁、肾球囊壁BM、小球、小球MeS和和GBM 3、4、5 链链 GBM、DTBM 6 链链 肾球囊壁肾球囊壁 BM、CTBMa a1,3,5(Col-IV)1,3,5(Col-IV)在肾组织表达在肾组织表达 a a1,3,5(IV)1,3,5(IV)荧光染色方法荧光染色方法荧光素:1、异硫氢酸荧光素(黄绿色荧光)
4、fluoresceinisothiocyanate,FITC,495nm 2、罗丹明(红色荧光)Lissamine rhodamine B,RB200,3、R藻红蛋白 R-pheoerythin,R-PE直接法:直接法:1,3()()免疫荧光技术免疫荧光技术切片滴加一抗抗置于37恒温箱孵育1h 70%甘油(甘油:PBS=7:3)封片。间接法:间接法:5(IV)a5加修复液10mins(0.1MKCL+0.1MHCL等比例混合)滴加一抗孵育过夜,PBS洗约5mins滴加二抗置于37恒温箱孵育1h 70%甘油(甘油:PBS=7:3)封片。135 1 TBM、球囊壁、球囊壁BM、MeR、GBM;3,
5、5 链链 GBM.DTBM3 Euro-Diagnostic Co 的的 Alport S Kit的染色结果评判的染色结果评判 Normal Alport dominant Alport recessive kidney skin kidney skin kidney skin MAB1 +MAB3 +-MAB5 +-+用于遗传性肾小球基膜病的诊断用于遗传性肾小球基膜病的诊断Inherited GBM diseasesInherited podoycte diseasesHematuriaProteinuriaa3b1-integrina-actinin-4agb3-integrinuPARP
6、axilinGlepp1PodocalyxinNherf2EzrinActin cytoskeletona-actinin-4SynaptopodinVinculinTalinILKCD151ab-dystroglycanUtrophinVitronectinAgrinLamininCollagen IV(a3,a4,a5a3,a4,a5)Slit-Diaphragm complexGBM GBMGBM的主要成分是的主要成分是IVIV型胶原型胶原.层连蛋白层连蛋白.蛋白多糖和巢蛋白蛋白多糖和巢蛋白 注:正常人注:正常人:G:GI I中中 2(2(红红);5 5(绿)(绿)Disorders d
7、ue to mutations in genes encoding GBM proteins Alport syndrome X-linked X-linked+diffuse leiomyomatosis Autosomal recessive Autosomal dominantThin basement membrane nephropathyHANAC(Hereditary angiopathy nephropathy aneurysm muscle cramps)Pierson syndromeLocusCOL4A5COL4A5+COL4A6COL4 A3 or COL4A4COL4
8、A3 or COL4A4COL4A3 or COL4A4Other unidentified lociCOL4A1LAMB2Disorders due to dysregulation of genes encoding GBM proteins Nail-patella syndromeLMX1B遗传性肾小球基膜病遗传性肾小球基膜病TYPE IV COLLAGEN TRIPLE HELIX STRUCTUREMOLECULAR DEFECTPHENOTYPEa5(IV)a3(IV)a4(IV)a3(IV)a4(IV)a5(IV)a3(IV)a4(IV)a5(IV)a4(IV)a5(IV)a3
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- 肾脏 病理