Research Group for Developmental Genetics and Neurobiology

The Research Group for Developmental Genetics and Neurobiology investigates how the cerebellum develops, how it has changed during evolution, and how these processes are affected in neurodevelopmental disorders. Although the cerebellum is best known for its role in motor coordination and balance, it is increasingly recognised as an important contributor to cognition, emotion, social behaviour, and language.

A major focus is on autism spectrum disorder and related neurodevelopmental conditions. The group studies how associated genetic variants affect cerebellar cell development and whether human-specific developmental features are particularly vulnerable. In parallel, the researchers investigate species- and lineage-specific patterns of gene expression and regulation to understand how evolutionary changes have shaped cerebellar structure and function.

To address these questions, the group combines mouse genetic models and human iPSC-derived organoids with single-cell and spatial transcriptomics, CRISPR-based perturbations, enhancer reporter assays, and cell-type-specific analyses of cellular morphology.

Visit lab website: sepplab.org

Mari Sepp
Group Leader, PI: Mari Sepp, PhD | Associate professor in developmental genetics and neurobiology
Mari Sepp received her doctorate from Tallinn University of Technology in 2012 and is currently a postdoctoral fellow at Heidelberg University. In her doctoral thesis, she studied the roles of a transcription factor (TCF4) associated with autism and schizophrenia in nerve cells under the supervision of Professor Tõnis Timmusk. At Heidelberg University, she works in Professor Henrik Kaessmann's research group, where she leads a research direction focusing on the development and evolution of the mammalian cerebellum. The main focus is on gene expression and regulation. Sepp has received scientific awards and recognition in Estonia, the USA and Germany.

Group members

Kersti Lilleväli,PhD
Research Fellow
[email protected]
ETIS CV | Scholar

Hanna Vihma, PhD
Research Fellow
[email protected]
ETIS CV | LinkedIn

Annika Trei
Lab manager
[email protected]
ETIS CV

Signi Ereline
Project manager
[email protected]

Christina Grozou
PhD student

Hemanth Sreenivasa
PhD student

Mariya Roy
MSc student

Maret Merits
BSc student

Nini Mzhavanadze
BSc student

Funding

SFARI Fellows-to-Faculty Award, Simons Foundation
Team Grant, Estonian Research Council
Installation Grant, EMBO
Mobilitas Grant, Estonian Research Council
Faculty of Science and Technology, University of Tartu