A method for fabricating uni-dsDNA microarray chip for analyzing DNA-binding proteins

作者：Wang JK^*; Li TX; Lu ZH

来源：Journal of Biochemical and Biophysical Methods, 2005, 63(2): 100-110.

DOI：10.1016/j.jbbm.2005.03.006

• fabrication
• uni-dsDNA microarray
• DNA-binding protein

This paper describes an approach for preparing unimolecular double-stranded DNA (uni-dsDNA) microarray chip. In this method, the various target oligonucleotides containing a reverse complementary sequence at 5'; end were firstly annealed to a same universal oligonucleotide with amino group at 5'; end and immobilized on aldehyde-derivatized glass slide. An on-chip DNA polymerization reaction was then performed to elongate the universal oligonucleotides. After a denaturation and a followed intra-strand annealing, a hairpin structure was formed at the free 3'; end of the immobilized oligonucleotides. Finally, another on-chip DNA polymerization was done to synthesize the uni-dsDNA microarray. Combining with a PCR amplification of chemically synthesized target oligonucleotides, this method was much cost-effective for production of the uni-dsDNA microarray. The uni-dsDNA microarray was verified applicable for detecting the presence and monitoring the DNA-binding activity of the sequence-specific DNA-binding proteins.

• 出版日期2005-5-30
• 单位东南大学