A11-positive &#946;-amyloid Oligomer Preparation and Assessment Using Dot Blotting Analysis

Huang Chunhui; Xu Dilin; Zhang Ke; Shentu Jieyi; Yan Sicheng; Wu Dapeng; Wang Qinwen; Cui Wei

doi:10.3791/57592

A11-positive β-amyloid Oligomer Preparation and Assessment Using Dot Blotting Analysis

JoVE Journal
Biochemistry

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JoVE Journal Biochemistry

A11-positive β-amyloid Oligomer Preparation and Assessment Using Dot Blotting Analysis

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06:17 min

May 22, 2018

DOI: 10.3791/57592-v

Huang Chunhui^1,2, Xu Dilin¹, Zhang Ke¹, Shentu Jieyi², Yan Sicheng¹, Wu Dapeng³, Wang Qinwen¹, Cui Wei^1,2

¹Ningbo Key Laboratory of Behavioral Neuroscience, Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine,Ningbo University, ²Li Dak Sum Yip Yio Chin Kenneth Li Marine Biopharmaceutical Research Center,Ningbo University, ³School of Materials Science and Chemical Engineering,Ningbo University

Overview

This protocol describes the preparation of Aβ oligomers from a synthetic peptide in vitro and the evaluation of their relative amounts using dot blotting analysis. This method is simple, reliable, and reproducible, making it essential for neuropharmacological research.

Key Study Components

Area of Science

Neuroscience
Neuropharmacology
Biochemistry

Background

Aβ oligomers are implicated in neurodegenerative diseases.
Understanding their formation is crucial for therapeutic development.
Current methods for preparing these oligomers can be complex.
This protocol aims to simplify the process for researchers.

Purpose of Study

To provide a reliable method for preparing Aβ oligomers.
To facilitate the evaluation of oligomer concentrations.
To enhance reproducibility in neuropharmacological experiments.

Methods Used

Adjusting A-beta monomer concentration to 0.25 mg/mL.
Evaporating the solution with high purity nitrogen gas.
Monitoring the effects of HR5P on oligomer formation.
Utilizing dot blotting analysis for evaluation.

Main Results

The method successfully produces Aβ oligomers.
Dot blotting analysis effectively quantifies oligomer amounts.
HR5P presence significantly influences oligomer formation.
The protocol demonstrates high reliability and reproducibility.

Conclusions

This protocol simplifies the preparation of Aβ oligomers.
It provides a valuable tool for neuropharmacological research.
Future studies can build on this reliable method.

Frequently Asked Questions

What are Aβ oligomers?

Aβ oligomers are aggregates of amyloid-beta peptides associated with neurodegenerative diseases.

Why is it important to study Aβ oligomers?

Studying Aβ oligomers helps understand their role in neurodegeneration and potential therapeutic targets.

How does the presence of HR5P affect oligomer formation?

HR5P influences the aggregation process, impacting the yield of Aβ oligomers.

What is dot blotting analysis?

Dot blotting is a technique used to detect and quantify proteins or peptides on a membrane.

Is this method reproducible?

Yes, the method has been shown to be reliable and reproducible in various experiments.

This protocol describes how to prepare Aβ oligomers from a synthetic peptide in vitro and to evaluate relative amounts of Aβ oligomer by a dot blotting analysis.

This method can help answer key questions in the neuropharmacological field. The main advantage of this technique is that it's simple, reliable, and reproducible to form beta-amyloid oligomer. We show demonstration of this method is critical as steps for preparing beta oligomer are difficult to learn.

First, adjust the concentration of A-beta monomer solution to 0.25 milligrams per milliliter by adding 900 microliters of double-distilled water to the tube. Then continue evaporating the monomer solution with high purity nitrogen gas until the volume reaches about 850 microliters with a concentration of about 0.29 milligrams per milliliter. The presence of HR5P affects the formation of A-beta oligomer.

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