Jo’s and Prateek’s manuscript is online on bioRxiv:
How do adult cells acquire plasticity after injury? The Junker (MDC) and Ninov (CRTD) labs show that zebrafish δ1-cells restore insulin production after β-cell loss. δ1-cells occupy a permissive chromatin state before injury, and meis1a/b is required for the response.
Author: junkerlab
May 21, 2026 – Best research environment award
Fantastic news: The Junker lab is among the 15 groups chosen for the “Best Research Environment 2026” award of the Junge Akademie.
May 6, 2026 – Paper online
How does regeneration begin after heart injury? In a new Nature Communications paper, Janita used in vivo single-cell RNA metabolic labeling to identify early transcriptional responders in the regenerating zebrafish heart
April 14, 2026 – PhD defense Janita
Congrats, Janita! Great job!






Feb 1, 2026 – Iman and Aryan join the lab
Iman and Aryan join the lab for their Master thesis (Molecular Medicine program, Charité). Welcome!
Nov 11, 2025 – Conference presentation
Janita presents her PhD work at the “Single Cells in Focus” meeting in Berlin
Oct 21, 2025 – Conference presentations
Jo and Emi present their work at “Systems Biology of Gene Regulation & Genome Editing”, Cold Spring Harbor Asia, Suzhou, China
Oct 15/16, 2025 – lab retreat
Two days of inspiring science at our lab retreat on Schwanenwerder island

Oct 14, 2025 – Preprint online
Nora’s manuscript is available on bioRxiv. Fantastic work deciphering the influence of the cell of origin on tumor expression states in neuroblastoma.