The objective of our research is to develop two innovative technologies: massively parallel whole genome amplification and DNA sequencing by denaturation (SBD). The proposed research will address two technological issues critical for the development of the next-generation sequencing technologies: 1) the development of methods for the parallel clonal amplification of individual DNA molecules from whole genomes; and 2) the development of an ultra high throughput sequencing strategy that can integrate genome-scale sample amplification and processing into the sequencing workflow in an integrated miniaturized device. We have demonstrated that hundreds of millions of single circular DNA molecules can be separated and cloned in massive parallel on solid supports using a powerful isothermal DNA amplification technique called rolling circle amplification (RCA). We have also developed a conceptual framework for the """"""""sequencing by ? denaturation"""""""" technology for rapid and accurate DNA sequencing. We propose to demonstrate the feasibility of separating and cloning individual shot-gun DNA fragments from a whole mammalian-size genome in a small area on a single chip using the rolling circle amplification technology. We also will demonstrate the proof-of-principle of the novel """"""""sequencing by denaturation"""""""" method for high throughput DNA sequencing. Accomplishing the proposed milestones will lay down a technological framework for an integrated system that will enable whole genome amplification and sequencing to be carried out in a single miniaturized device. Genome sequencing cost can be reduced by several orders of magnitude by essentially eliminating the needs for costly reagents and conventional cloning, colony picking and other processes. In the long run our technology will have a great potential to achieve the goal of this RFA for very inexpensive re-sequencing of genomes. Once such an integrated bench-top system is fully developed, genome sequencing could be routine operations of many individual research and diagnostic laboratories. The personal genome project could be a reality. That will truly transform the nature of biomedical research and individual healthcare. ? ? ?
| Chen, Ying-Ja; Roller, Eric E; Huang, Xiaohua (2010) DNA sequencing by denaturation: experimental proof of concept with an integrated fluidic device. Lab Chip 10:1153-9 |
| Joneja, Aric; Huang, Xiaohua (2009) A device for automated hydrodynamic shearing of genomic DNA. Biotechniques 46:553-6 |
| Chen, Ying-Ja; Huang, Xiaohua (2009) DNA sequencing by denaturation: principle and thermodynamic simulations. Anal Biochem 384:170-9 |
| Barbee, Kristopher D; Hsiao, Alexander P; Heller, Michael J et al. (2009) Electric field directed assembly of high-density microbead arrays. Lab Chip 9:3268-74 |
| Barbee, Kristopher D; Huang, Xiaohua (2008) Magnetic assembly of high-density DNA arrays for genomic analyses. Anal Chem 80:2149-54 |
