Meet Our Experts
Amy Wu, PhD
Senior Program Manager Bioanalytical
New Jersey, USA
Dr. Amy Wu is a Sr. Global Program Manager at WuXi AppTec and she provides technical support for the clinical bioanalytical services. She is also a key contributor to many clinical study teams. Dr. Wu received her B.S. from Beijing University major in Physical and Colloid Chemistry. After that, she received her PhD in Physical Organic Chemistry from Rice University as Harry B. Weiser Research Scholar. Dr. Wu has over 20 years of experience in drug development focusing on Chemistry, Manufacturing, and Controls (CMC) and bioanalysis for big pharma and Contract Research Organizations (CROs). She also has knowledge in Good Practice (GxP) regulations and policies for various agencies. Dr. Wu’s strong scientific and leadership skills awarded her as a recipient of many business awards. She had numerous publications in her field and is an invited speaker at international conferences.
Xiaoxia Li, PhD, DABT
Executive Technical Director Toxicology
Joining WuXi AppTec with more than 15 years of preclinical drug development experience, Dr. Xiaoxia Li provides scientific support to our clients and will enhance the quick response rate for technical questions. She began her career at a preclinical Contract Research Organization (CRO), BOZO (Biology and Zoology) in Tokyo, and then spent over 13 years working as a Study Director at ITR Laboratories in Montreal, Canada. Afterwards, she worked as a Scientific Leader in nonclinical development for a pharmaceutical company in Toronto, Canada, before starting her own consulting firm, Sunrise IDD Inc. Dr. Xiaoxia Li is a Diplomate of the American Board of Toxicology (DABT). She completed her PhD in Pharmacology in Japan and received her MD and MSc in China.
Mark Walker, DVM
Senior Technical Director Toxicology
With more than 25 years of preclinical toxicology experience, Dr. Mark Walker provides technical and scientific support, enhancing WuXi AppTec’s ability to handle technical questions with a quicker response rate for our international clients. Dr. Walker’s professional focus and strength are in primate toxicology and integrative toxicology program design and regulatory interactions for Investigational New Drug (IND) applications. In addition, he has a record of successfully accomplishing the development and commercialization of specialized toxicology disciplines in a GLP environment to include both in-vivo and laboratory-based (in-vitro) models, leading to expansion of overall capabilities and services. Dr. Walker received both his BS and DVM from Texas A&M University.
Most recently, he was a Technical Director for SNBL USA, and before that he was the Senior Director of Laboratory Operations and Director of Research at Charles River; VP of Pathology and Laboratory Animal Medicine at Frontier Biosciences-Chengdu; and Senior Principle Scientist at Covance.
Xuesong Chen, PhD
Technical Director, Large Molecule, Bioanalytical
Dr. Xuesong Chen started his professional career in pharmaceutical field from HTS screening for novel lead compounds using automation system to successfully leading a highly productive team specialized on MD/MV for biologics PK, ADA and biomarkers for regulated studies. He has over 12 years of hands-on experience on Ligand Binding Assay (LBA) using different platforms for large molecules (LM), such as MSD, ELISA, ELLA, HTRF, AlphaLISA and Quanterix Simoa.
He also has strong experience on cell-based functional assay using confocal microscopy and tissue/cultures staining assay based on immunohistochemistry. Recently, he successfully developed two companion diagnostic kits for two different clinical trials under CLIA regulations. As a technical director at WuXi AppTec LTD, Dr. Chen is responsible for supporting client engagement and technical discussions for pre-clinical and clinical LM Bioanalytical service. Prior to starting his industrial career, Xuesong received his Ph.D. in Pharmacognosy from Peking Union Medical College, Chinese Academy of Medical Sciences, and his Post-Doc in Physiology from University of Texas Southwestern Medical Center at Dallas.
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