Related Experiment Video
Updated: Jun 2, 2026

A11-positive β-amyloid Oligomer Preparation and Assessment Using Dot Blotting Analysis
Published on: May 22, 2018
Novel (E)-5-styryl-2,2'-bithiophene derivatives as ligands for β-amyloid plaques
Mengchao Cui1, Zijing Li, Ruikun Tang
1Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Xinjiekouwai Street 19#, Beijing 100875, PR China.
Abstract:
In continuation of our investigation on the bithiophene structure as potential β-amyloid probes, a series of (E)-5-styryl-2,2'-bithiophene (SBTP) derivatives was designed and synthesized. In vitro binding showed that all of them displayed high binding affinities to Aβ(1-42) aggregates (K(i)=0.10-41.05nM). Moreover, two radio-iodinated probes, [(125)I]-(E)-5-(4-iodostyryl)-2,2'-bithiophene ([(125)I]8) and [(125)I]-(E)-5-iodo-5'-(4-methoxystyryl)-2,2'-bithiophene ([(125)I]31) were prepared. Both of them displayed specific labeling of Aβ plaques in the brain sections of AD model mice with low background. In vivo biodistribution in normal mice indicated that [(125)I]8 exhibited high initial brain uptake (2.11% ID/g at 2 min) and rapid clearance (0.41% ID/g at 30 min). These preliminary results suggest that SBTP derivatives may be served as novel β-amyloid imaging probes.
More Related Videos
10:04Imaging Amyloid Tissues Stained with Luminescent Conjugated Oligothiophenes by Hyperspectral Confocal Microscopy and Fluorescence Lifetime Imaging
Published on: October 20, 2017
04:41Preparation of Oligomeric β-amyloid1-42 and Induction of Synaptic Plasticity Impairment on Hippocampal Slices
Published on: July 14, 2010
Related Concept Videos
Amyloid Fibrils
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining, normally used to...
Amyloid Fibrils
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining, normally used to...
Alzheimer Disease ll: Pathophysiology