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Lab on A Chip 2011, Vol. 11 (21) :3609 -3618 doi:10.1039/c1lc20526a <<-上一篇 下一篇 ->>
A universal multiplex PCR strategy for 100-plex amplification using a;hydrophobically patterned microarray
Li, Yang;Guo, Shu-Juan;Shao, Ning;Tu, Shun;Xu, Miao;Ren, Zhao-Rui;Ling, Xing;Wang, Guo-Qing;Lin, Zhi-Xin;Tao, Sheng-Ce
[Li, Yang; Guo, Shu-Juan; Shao, Ning; Tu, Shun; Lin, Zhi-Xin; Tao, Sheng-Ce] Shanghai Jiao Tong Univ, Key Lab Syst Biomed, Shanghai Ctr Syst Biomed, Minist Educ, Shanghai 200240, Peoples R China.;[Li, Yang; Guo, Shu-Juan; Shao, Ning; Tu, Shun; Tao, Sheng-Ce] State Key Lab Oncogenes & Related Genes, Shanghai 200240, Peoples R China.;[Xu, Miao; Ren, Zhao-Rui] Shanghai Jiao Tong Univ, Sch Med, Shanghai Inst Med Genet, Shanghai 200040, Peoples R China.;[Ling, Xing] Shanghai Jiao Tong Univ, Res Inst Micro Nano Sci & Technol, Shanghai 200240, Peoples R China.;[Wang, Guo-Qing] Natl Engn Res Ctr Beijing Biochip Technol, Beijing 102206, Peoples R China.
Abstract: Both basic research and clinical medicine have urgent demands for highly efficient strategies to simultaneously identify many different DNA sequences within a single tube. Effective and simultaneous amplification of multiple target sequences is a prerequisite for any successful multiple nucleic acid detection method. Multiplex PCR is one of the best choices for this purpose. However, due to the intrinsic interference and competition among primer pairs in the same tube, multiple rounds of highly empirical optimization procedures are usually required to establish a successful multiplex PCR reaction. To address this challenge, we report here a universal multiplex PCR strategy that is capable of over 100-plex amplification using a specially designed microarray in which hydrophilic microwells are patterned on a hydrophobic chip. On such an array, primer pairs tagged with a universal sequence are physically separated in individual hydrophilic microwells on an otherwise hydrophobic chip, enabling many unique PCR reactions to be proceeded simultaneously during the first step of the procedure. The PCR products are then isolated and further amplified from the universal sequences, producing a sufficient amount of material for analysis by conventional gel electrophoresis or DNA microarray technology. This strategy is abbreviated as "MPH&HPM'' for "Multiplex PCR on a Hydrophobically and Hydrophilically Patterned Microarray''. The feasibility of this method is first demonstrated by a multiplex PCR reaction for the simultaneous detection of eleven pneumonia-causing pathogens. Further, we demonstrate the power of this strategy with a highly successful 116-plex PCR reaction that required only little prior optimization. The effectiveness of the MPH&HPM strategy with clinical samples is then illustrated with the detection of deleted exons of the Duchenne Muscular Dystrophy (DMD) gene, the results are in excellent agreement with the clinical records. Because of its generality, simplicity, flexibility, specificity and capacity of more than 100-plex amplification, the MPH&HPM strategy should have broad applications in both laboratory research and clinical applications when multiplex nucleic acid analysis is required.
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