跳至主要内容

LPP rat (LEC × PVG-derived Atp7b mutant)

Crossing LEC and PVG rats produced the LPP line with mutated Atp7b and wild-type NAT and coat-colour traits. LPP rats progressively accumulate hepatic copper and develop biochemical evidence of liver disease from around 90 days of age.

结局指标

获得可供光学显微镜观察的 H&E 染色组织切片:细胞核蓝紫色、细胞质与结缔组织纤维粉红色,用于观察组织中细胞的整体结构与形态细节。本方案本身不产出病理评分数值,也不提供特定分子标志物的定量结果。

实验动物

Hematoxylin and Eosin (H&E) staining for histopathology
年龄
12-16 周龄(PMID:29473169)
组织
liver sections

实验步骤

脱蜡(Dewaxing) 石蜡切片置于二甲苯中脱蜡 3 次,每次 00:03:00。 复水(Rehydration) 石蜡切片依次置于 100% 乙醇中 3 次、每次 00:03:00,再置于 95% 乙醇中 1 次、00:03:00,随后用水漂洗。 苏木素核染色(Hematoxylin staining) 石蜡切片以苏木素染液染色 00:00:20,随后在流水下冲洗 00:01:00。 分化与返蓝(Differentiation and bluing) 石蜡切片置于返蓝液中 00:01:00,随后在流水下冲洗 00:01:00;此步使细胞核呈现蓝色。 伊红染色(Eosin staining) 石蜡切片以伊红复染 00:00:10;此步使细胞质成分与结缔组织纤维呈现粉红色。 脱水与透明(Dehydration and Clearing) 石蜡切片依次置于 95% 乙醇中 00:02:00、100% 乙醇中 2 次、每次 00:02:00,随后置于二甲苯中 2 次、每次 00:02:00。 封片(Mounting) 石蜡切片以 Permount 封片介质加盖玻片封固。

模型身份

模型名称
LPP rat (LEC × PVG-derived Atp7b mutant)
物种
rat
品系
LPP
遗传背景
LEC x PVG congenic cross
基因型/合子状态
mutated Atp7b; wild-type serotonin N-acetyltransferase (NAT) trait and coat colour

生物学特性

适用研究问题
Which animal models reproduce hepatic and neurological Wilson disease, and which LEC phenotypes are attributable to Atp7b itself.
模型局限
Derived as a congenic control line for Atp7b specificity; copper-overload phenotype must be interpreted against the PVG-carried background.

实验方法

实验方案

  • Hematoxylin and Eosin (H&E) staining for histopathology

    本方案用于固定、石蜡包埋组织切片(4 μm)的苏木素-伊红(H&E)染色:经脱蜡、复水、苏木素核染、返蓝、伊红复染、脱水透明与封片七个步骤,使细胞核呈蓝紫色、细胞质与结缔组织纤维呈粉红色,供光学显微镜下观察组织中细胞与整体结构形态。

配套试剂与材料

参考文献

  1. Animal models of Wilson disease. PMID:29473169. LEC/LPP section distinguishes additional NAT/coat-colour background mutations from the Atp7b mutation and identifies LPP as the LEC × PVG-derived line.
  2. Nathalia L. Oliveira; Samantha Gruenheid. Hematoxylin and Eosin (H&E) staining for histopathology. protocols.io, v1, 2026-07-31. DOI: 10.17504/protocols.io.kxygxr9jdg8j
  3. Epredia Signature Series Hematoxylin (7221), 产品信息页, Fisher Scientific
  4. Epredia Signature Series Bluing Reagent (7301), 产品信息页, Fisher Scientific
  5. Epredia Signature Series Eosin Y (7111), 产品信息页, Fisher Scientific
  6. Xylene, Fisherbrand HistoPrep (HC7001GAL), 产品信息页, Fisher Scientific
  7. Fisher Chemical Permount Mounting Medium (SP15 产品族), 产品信息页, Fisher Scientific
  8. Ethanol (CID 702, CAS 64-17-5), PubChem 化合物标准记录
  9. ARRIVE 2.0 官方规范