JN Biosciences LLC

Dr. Naoya Tsurushita is a Cofounder and Managing Partner of JN Biosciences LLC.  Prior to starting JN Biosciences, Dr. Tsurushita worked at Protein Design Labs, Inc. (later acquired by Abbvie) from 1991 to 2005 with increasing responsibilities as Staff Scientist, Senior Scientist and Director, Protein Engineering.  At Protein Design Labs, his group was responsible for various antibody expression and engineering projects, including humanization of monoclonal antibodies, modification of effector functions, alteration of affinity and specificity, extension of circulation half-life of IgG antibodies and Fc fusion proteins, and establishment of mammalian surface expression vectors.  In addition, he played an important role in evaluation of external collaboration and in-licensing opportunities at Protein Design Labs.  Prior to joining Protein Design Labs, Dr. Tsurushita was an Assistant Professor at the Institute for Virus Research of Kyoto University in Japan. Dr. Tsurushita received his Ph.D. in Molecular Biology from Kyoto University and held postdoc positions at Stanford University Medical Center and University of California, Berkeley. Dr. Tsurushita has published 33 research articles, book chapters and review articles.  He has also been awarded 46 U.S. patents that are all related to therapeutic antibodies. 

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