title: Fast detection of genetic information by an optimized PCR in an interchangeable chip.
abstract: In this paper, we report the construction of a polymerase chain reaction (PCR) device for fast amplification and detection of DNA. This device consists of an interchangeable PCR chamber, a temperature control component as well as an optical detection system. The DNA amplification happens on an interchangeable chip with the volumes as low as 1.25 μl, while the heating and cooling rate was as fast as 12.7°C/second ensuring that the total time needed of only 25 min to complete the 35 cycle PCR amplification. An optimized PCR with two-temperature approach for denaturing and annealing (Td and Ta) of DNA was also formulated with the PCR chip, with which the amplification of male-specific sex determining region Y (SRY) gene marker by utilizing raw saliva was successfully achieved and the genetic identification was in-situ detected right after PCR by the optical detection system.
authors: Nano Science and Nano Technology program and Physics Department, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong.
authors: Jinbo
authors: J
authors: Wu
authors: Rimantas
authors: R
authors: Kodzius
authors: Kang
authors: K
authors: Xiao
authors: Jianhua
authors: J
authors: Qin
authors: Weijia
authors: W
authors: Wen
mesh_terms: D004247:DNA / Q000032:analysis*; D006801:Humans; D046210:Microfluidic Analytical Techniques; D019095:Point-of-Care Systems; D016133:Polymerase Chain Reaction / Q000295:instrumentation*; D012463:Saliva / Q000737:chemistry; D051876:Sex-Determining Region Y Protein / Q000235:genetics
chemical_list: C497745:SRY protein, human; D051876:Sex-Determining Region Y Protein; D004247:DNA