Joining the company in 2020, he was Senior Director, Process Research and Assay Development at Tengion Inc., a tissue engineering and regenerative medicine company located in Winston-Salem, NC. He held this position for 7 years. John has also served as Senior Director, Cell Therapy Program, Vesta Therapeutics, Inc., (formerly Incara Pharmaceuticals) in Research Triangle Park, NC, for 5 years. John has both developed and managed research and pre-clinical programs, initiated clinical trial sites, and directed development activities for cell therapy and tissue engineered products. He is an inventor on 3 issued patents pertaining to regenerative medicine products, and has published over 100 articles. Working closely with regulatory agencies, John has helped to ensure approval of the company's products. He started his career as a faculty member at the University of Rochester Cancer Center (NY), where for 10 years he maintained an independently funded research laboratory training graduate students and post-doctoral fellows in the area of tumor suppressor gene expression, protein structure, and function.