Synthesis and evaluation of stilbene derivatives as a potential imaging agent of amyloid plaques
作者:Myeng Chan Hong、Yun Kyung Kim、Jae Yong Choi、Si Qiang Yang、Hakjune Rhee、Young Hoon Ryu、Tae Hyun Choi、Gi Jeong Cheon、Gwang Il An、Hye Yun Kim
DOI:10.1016/j.bmc.2010.06.044
日期:2010.11.15
bindings and Aβ plaque imaging. Among these molecules, compound 42 meets two critical requirements for imaging agent; high fluorescence responsiveness and strong binding affinity. This compound showed more than 25-fold increase with the dissociation constant of 1.13 ± 0.37 μM. In AD mouse brain tissue, 42 selectively stained Aβ plaque, more specifically peripheral regions of Aβ plaque. This finding demonstrated
可以检测Aβ(β-淀粉样肽)斑块的荧光探针是诊断阿尔茨海默氏病(AD)的重要工具,而4- N-甲基氨基-4'-羟基二苯乙烯(SB-13)是有前途的候选分子之一。我们在这里报告了SB-13衍生物的合成,该衍生物由各种给电子/吸电子部分和不同大小的N-取代基组成。筛选合成的化合物以体外检测Aβ40原纤维。四种化合物显示出超过六倍的强度增加,并对它们的详细结合和Aβ斑块成像进行了进一步分析。在这些分子中,化合物42满足显像剂的两个关键要求;高荧光响应性和强结合亲和力。该化合物显示出超过25倍的增加,解离常数为1.13±0.37μM。在AD小鼠脑组织中,有42种选择性染色的Aβ斑块,更具体地讲是Aβ斑块的外围区域。这一发现证明了其作为AD研究的脑成像剂的潜在用途。