Synthesis of α-carboranyl-α-acyloxy-amides as potential BNCT agents
摘要:
Novel alpha-carboranyl-alpha-acyloxy-amides were prepared as potential BNCT agents utilizing three-component Passerini reaction. Preliminary cytotoxicity of the representative compounds on two brain tumor cell lines (U-87 and A-172) showed no effect on cell viability; an essential requirement for utility as potential BNCT agents. (C) 2009 Elsevier Ltd. All rights reserved.
Chemically Programmed Cell Adhesion with Membrane-Anchored Oligonucleotides
作者:Nicholas S. Selden、Michael E. Todhunter、Noel Y. Jee、Jennifer S. Liu、Kyle E. Broaders、Zev J. Gartner
DOI:10.1021/ja2080949
日期:2012.1.18
Cell adhesion organizes the structures of tissues and mediates their mechanical, chemical, and electrical integration with their surroundings. Here, we describe a strategy for chemically controlling cell adhesion using membrane-anchored single-stranded DNA oligonucleotides. The reagents are pure chemical species prepared from phosphoramidites synthesized in a single chemical step from commercially available starting materials. The approach enables rapid, efficient, and tunable cell adhesion, independent of proteins or glycans, by facilitating interactions with complementary labeled surfaces or other cells. We demonstrate the utility of this approach by imaging drug-induced changes in the membrane dynamics of non-adherent human cells that are chemically immobilized on a passivated glass surface.