title: Fabrication of 3-D gel microarrays directly with raw polymerase chain reaction products by heat-directed polymerization.
abstract: In this study, a new method for fabricating 3-D polyacrylamide gel microarrays was presented. In the method, a 3-D gel microarray was successfully fabricated by directly heating the slides with arrayed prepolymer at 80 degrees C for 2 min. The prepolymer on the microarray only contained 40% v/v raw/unpurified PCR products, 1.4% ammonium persulfate (APS), 6% acrylamide, and 20% glycerol and the balance H2O but no TEMED. The heat could induce the free radicals from APS to initiate polymerization of the 3-D gel and allow the incorporation of raw PCR products into the 3-D gel. The immobilized DNA on the gel microarray had the specificity of hybridization and the ability to distinguish base mismatch. It has been demonstrated that SNP genotyping of both the 194072 loci and the 252944 loci in the beta2 subunit gene of gamma-aminobutyric acid A receptor (GABRB2) gene was successfully performed by using the 3-D gel microarray. This method is efficient, simple, rapid, and easy to control in preparing a 3-D gel microarray, which would be widely used for various purposes in laboratory research and clinic application.
authors.affiliation: State Key Laboratory of Bioelectronics, Southeast University, Nanjing, P. R. China.
authors.forename: Zhiqiang
authors.initials: Z
authors.lastname: Pan
authors.forename: Yanqiang
authors.initials: Y
authors.lastname: Li
authors.forename: Qun
authors.initials: Q
authors.lastname: Shan
authors.forename: Xiaohong
authors.initials: X
authors.lastname: Hong
authors.forename: Dongrui
authors.initials: D
authors.lastname: Zhou
authors.forename: Minghao
authors.initials: M
authors.lastname: Zhang
authors.forename: Ping
authors.initials: P
authors.lastname: Chen
authors.forename: Pengfeng
authors.initials: P
authors.lastname: Xiao
authors.forename: Zuhong
authors.initials: Z
authors.lastname: Lu
mesh_terms: D005838:Genotype; D006358:Hot Temperature; D006801:Humans; D046228:Microarray Analysis / Q000295:instrumentation* / Q000379:methods; D016133:Polymerase Chain Reaction / Q000379:methods*; D020641:Polymorphism, Single Nucleotide; D011963:Receptors, GABA-A / Q000235:genetics; D012559:Schizophrenia / Q000235:genetics
chemical_list: D011963:Receptors, GABA-A