Thymidine-functionalized silica nanotubes for selective recognition and separation of oligoadenosines
作者:Nam Hoon Kim、Hye Young Lee、Youngje Cho、Won Seok Han、Dongmin Kang、Shim Sung Lee、Jong Hwa Jung
DOI:10.1039/b923029g
日期:——
Thymidine receptor residues were covalently attached to the inner side wall of silica nanotubes (SNTs). The adsorption capacities of the thymidine-functionalized silica nanotubes (T-SNTs) with nucleic acids and oligonucleic acids were evaluated. The T-SNTs exhibited excellent selectivity both in recognition and separation of adenosine and adenosine-based oligonucleotides, because adenosine and oligoadenosine were selectively bound to the inner surface of T-SNTs by formation of complementary intermolecular hydrogen bonds. On the other hand, guanosine, cytosine and oligoguanosine derivatives were not bound to the T-SNTs. The T-SNTs selectively separated 95% of oligoadenosine from a mixture of equal amounts of oligocytosine and oligoguanosine. Our results imply that the T-SNTs can be used as a selective receptor and separator for the extraction and separation of adenosine and oligoadenosine derivatives in aqueous solution.
胸苷受体残基以共价方式固定在硅纳米管(SNTs)的内侧壁上。评估了胸苷功能化硅纳米管(T-SNTs)与核酸和寡核苷酸的吸附能力。T-SNTs在识别和分离腺苷及腺苷基寡核苷酸方面表现出优异的选择性,因为腺苷和寡腺苷通过形成互补的分子间氢键,选择性地结合在T-SNTs的内表面上。另一方面,鸟苷、胞苷和寡鸟苷衍生物未能与T-SNTs结合。T-SNTs能够从等量的寡胞苷和寡鸟苷的混合物中选择性分离出95%的寡腺苷。我们的结果表明,T-SNTs可以作为选择性受体和分离剂,用于在水溶液中提取和分离腺苷及寡腺苷衍生物。