Teams

Development of a massively-parallel, single-molecule sequencing system that is capable of sequencing a human genome in less than a day for $1000 requires an integrated, interdisciplinary effort. To achieve this goal, VisiGen has assembled the following teams:

Chemistry: VisiGen's Chemistry Team selects, designs, and screens fluorescent dyes for sequencing detection, designs and synthesizes novel nucleotide triphosphates, and develops surface chemistries for sequencing complex immobilization that achieves optimal enzyme activity and low background fluorescence.

Molecular Biology: VisiGen's Molecular Biology Team designs and engineers modified polymerase for use in VisiGen's sequencing system, identifies optimally modified dNTPs by determining the relative efficiency at which each modified dNTP is incorporated, and optimizes reaction efficiency and accuracy by investigating factors that affect nucleotide incorporation.

Detection Technologies: VisiGen's Detection Team has designed fully integrated, massively parallel single molecule detection systems for use in production-scale DNA analysis. They are increasing the systems' sensitivity by altering factors affecting fluorophore emission properties, including design of the acceptor-labeled nucleotides and donor-labeled polymerase, reaction components, and surface chemistry on which the massively parallel reactions occur.

Software Design & Development: VisiGen's Software Team members are inventing novel algorithms and methods for digital signal processing and recognition, database design, statistical analysis, bioinformatics, and data mining.

Career Opportunities: VisiGen has begun an aggressive move towards commercialization over the next two years and is currently recruiting new members for all scientific teams and for management to assist in achieving this goal. Click here for specific openings.

Founders

Susan Hardin, Ph.D. - President and CEO

Dr. Susan Hardin received an undergraduate degree in Biology at Penn State University in 1982, and a Ph.D. in Molecular, Cellular, and Developmental Biology from Indiana University in 1987. She performed postdoctoral work at Brandeis University in Waltham Massachusetts. Dr. Hardin became the Director of the Gene Technologies Laboratory at Texas A&M University in 1991, joined the faculty at the University of Houston as an Assistant Professor of Biology and Biochemistry in 1995, and was promoted to Associate Professor in 2002. In August 2005, she resigned her tenured professorship, but retains Adjunct Professor status.

Dr. Hardin is an active member of the Association of Biomolecular Research Facilities and was elected to the ABRF Executive Board. She is a 2004 American Women in Computing, Houston, Top Women in Technology Honoree, and was recently inducted to the American Institute of Medical and Biological Engineering 2006 College of Fellows. In 2006 she will also receive a Penn State Eberly College of Science Outstanding Science Alumni Award. "The Outstanding Science alumni Awards are presented annually to recognize and reward outstanding Penn State alumni for their success as leaders in science and for the impact they have had and will continue to have on society and their professions." 

Dr. Hardin's research interests are in the areas of molecular genetics and biotechnology, especially with respect to the mechanisms of enzymatic DNA synthesis and DNA replication. She has published papers on novel methods for sequencing DNA, has issued patents, and several patents pending.

 James M. Briggs, Ph.D. - CFO/Secretary

Dr. Briggs holds a Ph.D. in Theoretical Organic Chemistry from Purdue University and carried out postdoctoral studies at the University of Houston and the University of California, San Diego. Dr. Briggs is an Associate Professor of Biochemistry, with joint appointments in the Departments of Chemistry and Chemical Engineering. Dr. Briggs has 20 years of training and experience in Computational Chemistry and Biochemistry and has published over 65 papers in scientific journals, with an additional 5 manuscripts currently submitted for publication. Dr. Briggs' research has focused on the diverse areas of the chemical and physical properties of small organic molecules in water and other solvents, to biomolecular recognition, including computer-aided drug design. Dr. Briggs also has a focus on the development of scientific computer programs, having made important contributions to the University of Houston Brownian Dynamics (UHBD) computer program that is licensed to over 200 scientific research laboratories.

 Xiaolian Gao, Ph.D.

Dr. Gao is a Professor of Biology, Biochemistry and Chemistry, and is Director of the Keck/IMD NMR Center at the University of Houston. Dr. Gao holds a BS degree from the Beijing Institute of Chemical Engineering and a Ph.D. degree in Chemistry from Rutgers University; she did post-doctoral work in NMR-based structure biology at Columbia University Medical School. Before joining the faculty at the University of Houston, she was a Principle Investigator at the Glaxo Research Institute. Pursuing research in the interdisciplinary areas of chemistry and biology, she developed novel methods for miniaturizing massively parallel synthesis of biomolecules on microfluidic microchips and multiplex biochemical assays on the same chip platform, established the microchip based DNA synthesis for many genomic and proteomic applications, and demonstrated the use of microchips as pico-liter titer plates for ultra-fast throughput and  quantitative measurement of binding and enzymatic activities. Dr. Gao is the founder of several biotechnology companies and has extensive experience in commercialization of biotechnology products.

Shiao-Chun (David) Tu, Ph.D.

Dr. Tu holds his B.S. from National Taiwan University, and both M.S. in Nutritional Biochemistry and Ph.D. in Biochemistry from Cornell University. After postdoctoral training at Harvard University, Dr. Tu has been on the faculty at University of Houston since 1977, and is currently the John and Rebecca Moores Professor of Biology and Biochemistry. He has been active in research in enzymology and biotechnology, and is the recipient of the prestigious Research Career Development Award from the National Institutes of Health (NIH), the Faculty Excellence Award from Sigma Xi Society, the Excellence in Research and Scholarship Award from University of Houston, and the TOKTEN Award from The United Nations. Dr. Tu served as a member of NIH Physical Biochemistry Study Section, Associate Editor of Photochemistry and Photobiology, and Treasurer of The International Society for Bioluminescence and Chemiluminescence.

 Richard C. Willson, Ph.D. - Founding Chief Technical Officer

Dr. Willson holds B.S. and M.S. degrees from Caltech, and did his Ph.D. in Biochemical Engineering and postdoctoral studies in Biochemistry at MIT. With over 16 years of academic and entrepreneurial experience, Dr. Willson is the recipient of the prestigious Presidential Young Investigator Award under the first Bush administration, elected Fellow of the American Institute of Medical and Biological Engineering, and recipient of the ACS Division of Biochemical Technology Van Lanen award. Dr. Willson was a founder of VisiGen, and previously of Combicat and Actium Materials, and serves on the scientific advisory board of Symyx Corporation, one of the Zaffaroni companies.

 

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