Postdoc Position: Molecular mechanisms controlling synaptogenic competence across species

Leuven VIB-KU Leuven Center for Brain & Disease Research

16 Jul 2019

Leuven

VIB-KU Leuven Center for Brain & Disease Research

Joris de Wit Lab, Pierre Vanderhaeghen Lab

Post-doctoral

1

About the project

A crucial yet poorly understood step in neural circuit formation is the development of synaptogenic competence, the ability of neurons to form synapses. The rate at which synaptogenic competence develops is species-specific, developing in a matter of days in mouse neurons compared to many months in human neurons. This step requires a transition in a neuron’s molecular program from axon growth and pathfinding to cell-cell contact formation and synaptic differentiation. The mechanisms controlling this transition are largely unknown. 

Whether axon guidance and synaptogenesis require entirely different molecular mechanisms, or whether the same molecules are simply re-used and have context-dependent functions is still largely unclear. The evidence to date suggests that axon guidance molecules, such as the Semaphorins and their Neuropilin/Plexin receptors, continue to be expressed throughout adulthood. Synaptogenic adhesion molecules, such as Neurexins and Neuroligins, on the other hand appear to function exclusively in synaptogenesis. 

This project will examine the molecular mechanisms that control the switch in developmental program from axon guidance to synaptogenesis using automated imaging screening of cell cultures, transcriptome analysis of developing mouse and human neurons, and in vivo analysis of candidate molecules in mouse models.

About the labs

This is a collaborative project between the labs of Pierre Vanderhaeghen (Stem Cell and Developmental Neurobiology Lab), Joris de Wit (Laboratory of Synapse Biology) at the VIB-KU Leuven Center for Brain & Disease Research, Belgium, and Franck Polleux (visiting professor at the VIB-KU Leuven Center for Brain & Disease Research and Professor in the Department of Neuroscience of Columbia University-USA). 

The candidate will be based at the VIB-KU Leuven Center for Brain & Disease Research.  

Your job

This project focuses on investigating the mechanisms determining synaptogenic competence in mouse and human neurons. 

You will make use of mouse and human neuronal cell cultures, automated high-content imaging and advanced image analysis, transcriptome and proteome analysis, to identify candidate genes regulating synapse formation in mouse and human cortical pyramidal neurons. 

The role of identified candidate genes will subsequently be tested in vivo, using mouse genetics, xenotransplantation models, viral vector approaches, in combination with (ultra)structural and functional analysis of synaptic connectivity.

Selected references

  • Suzuki IK et al. Cell. 2018 173(6):1370-1384.e16. doi: 10.1016/j.cell.2018.03.067.
  • Linaro et al. bioRxiv 626218; doi: https://doi.org/10.1101/626218
  • Rice et al. Science (2019). 363(6423)
  • Condomitti et al. Neuron (2018). 100:201-215
  • Lewis, T.L. et al. Nature Communications  9:5008.
  • Hirabayashi Y. et al. (2017) Science 358(6363):623-630.

Profile

We are seeking a highly motivated, independent, enthusiastic, critical and creative individual to join our teams. The candidate should have a strong interest in synapse biology and developmental neurobiology.

Essential

  • PhD in neurobiology (molecular, cellular, developmental, systems) or related disciplines
  • A solid publication record with first-author research publication(s) in peer-reviewed international journals
  • Team player

Desirable but not required

  • Prior experience with mouse neurobiology and molecular biology is a plus
  • Prior experience with transcriptomics is a plus

We offer

  • A versatile and challenging job in a vibrant, world-class research environment operating at an international level
  • State of the art research facilities
  • A dedicated training program to broaden your expertise and enhance your skill set
  • A competitive compensation package based on expertise and experience
  • Financial support for at least 2 years. The successful candidate is encouraged to obtain a personal fellowship (Marie-Curie, HFSP, EMBO, or national funding organizations)
  • Starting Date: as soon as possible

How to apply?

For more information contact Joris de Wit. Please complete the online application procedure and include a detailed CV incl. list of publications, a motivation letter, and the contact information of three referees.