Stefan Scholz

Dr. Stefan Scholz serves as Senior Scientist and Deputy Head of the Department Bioanalytical Ecotoxicology at the Helmholtz Centre for Environmental Research - UFZ in Leipzig, Germany. Having joined UFZ in 2002 as a PostDoc and senior scientist, he has steadily advanced within the institution, serving as Acting Head of his department from 2022-2023 before assuming his current leadership role. His research program focuses on developing and applying innovative methods in ecotoxicology, with particular emphasis on zebrafish embryo models for chemical safety assessment and the development of alternatives to animal testing.

Dr. Scholz's primary research interests center around mechanisms of chemical action, high-content analysis and automation of bioassays, and the development of alternative testing methods for effect assessment of chemicals and biomonitoring. His work spans neurotoxicity assessment through behavioral endpoints like spontaneous tail coiling and photomotor response, developmental toxicity assessment with focus on vascular disruption, and the application of Adverse Outcome Pathways in chemical risk assessment. He has pioneered advanced imaging techniques, transcriptomics, and metabolomics approaches to investigate chemical effects at molecular and organismal levels, establishing robust methodologies for data-driven toxicology.

Analysis of Dr. Scholz's recent publications (2023-2025) reveals a strong progression toward increasingly sophisticated, integrated approaches in toxicological assessment. His work demonstrates a clear trajectory from basic mechanistic understanding toward practical regulatory applications, with significant contributions to developing quantitative Adverse Outcome Pathways, implementing high-content screening workflows, and establishing zebrafish embryo models as regulatory testing tools. A unifying theme across his research is the development of data-rich, mechanistically informed approaches that enhance the predictive power of chemical safety assessment while reducing reliance on traditional animal testing.

• OECD Cooperative Research scholarship (2015)
• Scholarship of the University of Nagoya, Japan (2004)

Throughout his career, Dr. Scholz has been actively involved in numerous collaborative research projects, including major initiatives like the Eco-exposome research program (2021-2027), Proxies of the Eco-exposome (2018-2022), InCeTo (2019-2023), and several recently launched projects including MibiTox (2020), nanoINHALE (2024), and SafePol (2025). His work has been supported by various national and international funding mechanisms, including collaborations with regulatory agencies like the US-EPA. He has contributed significantly to the development of standardized testing guidelines, particularly for zebrafish embryo toxicity testing, through participation in OECD validation studies.

Based in the UFZ facilities in Leipzig (Permoserstr. 15, Building 6.0, Room 327), Dr. Scholz leads a research team that operates state-of-the-art laboratories for zebrafish husbandry, automated imaging systems, and molecular analysis. His group has developed specialized software tools like EmbryoMotion for analyzing spontaneous tail contraction and photomotor response of zebrafish embryos. The research environment emphasizes interdisciplinary collaboration, with strong connections to computational biology, environmental chemistry, and regulatory science groups both within UFZ and across international networks.