阿尔兹海默病转基因斑马鱼表达人类APP病变斑马鱼appb启动子控制下一代

Title:Generation of Alzheimer’s Disease Transgenic Zebrafish Expressing Human APP Mutation Under Control of Zebrafish appb Promotor

Volume: 14 Issue: 6

关键词: 阿尔兹海默病转基因模型，人类APP瑞典病变，斑马鱼appb启动子，Aβ沉积，微血管异常，神经丢失。

摘要: Background: Amyloid peptide precursor (APP) as the precursor protein of peptide betaamyloid (β-amyloid, Aβ), which is thought to play a central role in the pathogenesis of Alzheimer's disease (AD), also has an important effect on the development and progression of AD. Through knocking-in APP gene in animals, numerous transgenic AD models have been set up for the investigation of the mechanisms behind AD pathogenesis and the screening of anti-AD drugs. However, there are some limitations to these models and here is a need for such an AD model that is economic as well as has satisfactory genetic homology with human.

Methods: We generated a new AD transgenic model by knocking a mutant human APP gene (APPsw) in zebrafish with appb promoter of zebrafish to drive the expression of APPsw.

Results: Fluorescent image and immunochemistry stain showed and RT-PCR and western blot assay confirmed that APPsw was successfully expressed in the brain, heart, eyes and vasculature of the transgenic zebrafish. Behavioral observation demonstrated that the transgenic zebrafish had AD-like symptoms. Histopathological observation found that there were cerebral β-amyloidosis and angiopathy (CAA), which induced neuron loss and enlarged pervascular space.

Conclusion: These results suggest that APPsw transgenic zebrafish well simulate the pathological characters of AD and can be used as an economic AD transgenic model. Furthermore, the new model suggested that APP can express in microvasculatures and cause the Aβ generation and deposition in cerebral vessel which further destroys cerebral vascular structure resulting in the development and/or the progress of AD.

Cite this article as:

Generation of Alzheimer’s Disease Transgenic Zebrafish Expressing Human APP Mutation Under Control of Zebrafish appb Promotor, Current Alzheimer Research 2017; 14 (6) . https://dx.doi.org/10.2174/1567205013666161201202000

DOI https://dx.doi.org/10.2174/1567205013666161201202000	Print ISSN 1567-2050
Publisher Name Bentham Science Publisher	Online ISSN 1875-5828