Our mission
↵
Cell, tissue and organ development are governed by spatial and temporal processes that span scales—from molecular organization within a single cell to the mechanics of cells within and across tissues. These processes integrate multiple cues:
- Genetic: cell fate allocation and patterning of body axes, positions and boundaries.
- Molecular: signals from the extracellular matrix, lipids, metabolites, hormones and guidance molecules.
- Mechanical: forces such as blood‑flow shear and tissue stiffness, as well as acoustic/vibrational inputs.
- Environmental: light/dark and temperature cycles, nutrition, and exposure to chemicals or nanomaterials.
We study how cells sense these cues and make decisions—and what that means for development, homeostasis, regeneration and disease. Our goal is to understand these principles deeply enough to engineer them, with applications in regenerative medicine and biotechnology.
Primary models are zebrafish and medaka—transparent, rapidly developing vertebrates that reveal biology in vivo and in real time. We extend our findings to powerful complementary systems, including cell culture and mouse.
Our institute brings together experts in various fields: advanced live imaging, chemical screening, functional genomics (CRISPR‑mediated genome editing, RNA‑seq), synthetic genomics (designing custom genetic sequences), and bioinformatics/computational modelling.
- the European Zebrafish Resource Center (EZRC) --- one of just two global zebrafish stock centres worldwide --- and the Medaka Inbred Kiyosu-Karlsruhe (MIKK) panel of eighty inbred medaka lines.
- Screening centre & Imaging Hub, providing cutting-edge visualization infrastructure and expert support for complex biological systems to foster innovation with our global collaborators.

On October 30/31, the IBCS hosted a reunion in honor of Prof. Dr. Peter Herrlich, former director of the Institute for Toxicology and Genetics (ITG), the predecessor of the IBCS. Peter was head of the ITG from 1977 to 2003, when he moved on to direct the Leibniz Institute on Aging – Fritz Lipmann Institute in Jena. Under Peter’s directorship, the ITG had a strong focus on molecular biology and cancer research. For his work in this area, Peter received the Ernst Jung Gold Medal for Medicine in 2012. The reunion gathered over 60 alumni, colleagues and friends from all over the world, who reminisced Peter’s achievements as a scientist and mentor, sharing memories and anecdotes.
the Ernst Jung Gold Medal for Medicine 2012
Dr. Sepand Rastegar (IBCS-BIP) organized this meeting with the support of our colleagues, Prof. Dr. Nicholas Simon Foulkes, Dr. Laetitia Préau and Dr. Rima Siauciunaite, who contributed to its success. The meeting took place in September 2026 at the Centre for Organismal Studies (COS) in Heidelberg. It was a unique gathering for fostering collaboration and sharing innovative ideas across fish models such as zebrafish, cavefish, killifish and medaka, among others.
1st German Fish Meeting_rdax_98s.jpg)
The fundamental flow of biological information relies on three core pillars: DNA, RNA, and proteins. Notably, interactions between RNA and proteins can drive the formation of condensed biomolecular droplets. Integrating experimental analysis on RNA-protein droplets with computational approaches, Prof. Miha Modic from our institute has identified a novel class of RNA that plays an active role during early embryonic development.
KIT Press Release
In a major milestone for safety research, an international team led by Drs. Thomas Dickmeis and Carsten Weiss has established a breakthrough method to evaluate the toxic effects of chemicals on humans. By replacing traditional mammalian models with a strategic set of alternative, non-mammalian organisms, this new approach delivers faster, highly ethical, and reliable risk assessments.
KIT Press Release
Having spent millions of years isolated in total darkness, blind cave fish have completely lost their eyes. Yet, by studying this unique organism, an international research team led by Prof. Nicholas Foulkes discovered that a key DNA repair enzyme—long believed to only fix light-induced damage—can also repair DNA damages that have nothing to do with light.
KIT Media News