Abstract:
:We proposed to use a novel stepwise sequence-constructive SELEX method to develop DNA aptamers that can recognize Globo H which is a tumor-associated carbohydrate antigen. A combinatorial synthetic library that consisted of DNA molecules with randomized regions of 15-bases was used as the starting library for the first SELEX procedure. The input DNA library for the second round of SELEX consisted of the extension of the 5' and 3'-ends with 7-bases that were randomized from four selected aptamers. The third round of SELEX was performed following the same procedures as described for the second round of SELEX. The experimental results indicate that the binding affinity of DNA aptamers to Globo H was enhanced when using the sequence-constructive SELEX approach. The selectivity of the DNA aptamers for related disaccharides, mannose derivatives, and Globo H analogs demonstrated the ability of the DNA aptamers to discriminate the presence of various glycans with different structures.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Wang CY,Wu CY,Hung TC,Wong CH,Chen CHdoi
10.1016/j.bbrc.2014.08.086subject
Has Abstractpub_date
2014-09-26 00:00:00pages
484-9issue
3eissn
0006-291Xissn
1090-2104pii
S0006-291X(14)01509-5journal_volume
452pub_type
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