Synthesis and characterization of a fluorescent probe for α-tocopherol suitable for fluorescence microscopy
作者:Mikel Ghelfi、Lynn Ulatowski、Danny Manor、Jeffrey Atkinson
DOI:10.1016/j.bmc.2016.04.044
日期:2016.6
prepared fluorescent derivatives of α-tocopherol have shown tremendous utility in both in vitro exploration of the mechanism of ligand transfer by the α-tocopherol transfer protein (α-TTP) and the intracellular transport of α-tocopherol in cells and tissues. We report here the synthesis of a 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) containing α-tocopherol analog having extended conjugation
先前制备的α-生育酚的荧光衍生物在体外探索α-生育酚转移蛋白(α-TTP)的配体转移机制以及α-生育酚在细胞和组织中的细胞内转运中均显示出巨大的实用性。我们在这里报告的合成的4,4-二氟-4-硼3a,4a-二氮杂-s-茚并四烯(BODIPY)包含与烯基噻吩基团扩展共轭的α-生育酚类似物,最大程度地吸收和发射了更长的波长(λex= 571nm和λem= 583nm)。最终的荧光团噻吩基-烯-BODIPY-α-生育酚2以Kd = 8.7±1.1nM与重组人α-TTP结合,是用于监测培养的Mcf7#189细胞中α-生育酚分泌的合适探针。