Structural Biology and Engineering of Neuronal Proteins
Team Leader : Jonathan Elegheert
Jonathan Elegheert joined the IINS in 2019 as a team leader, sponsored by an Initiative of Excellence (IdEx) Junior Chair (University of Bordeaux) and a Neurocampus starting package (Regional Council of Nouvelle Aquitaine). In 2019, he was recruited to the CNRS, was a laureate of the CNRS-Inserm ATIP-Avenir program and obtained an ERC Starting Grant.
After studying medicine (BSc) and biochemistry (MSc), he obtained his PhD in 2012 from Ghent University (Belgium), where he studied the structural biology of Colony-Stimulating Factor 1 (CSF-1) cytokine signalling in the lab of Prof. Savvas N. Savvides as a Research Foundation - Flanders (FWO)-funded doctoral fellow. In 2012, he joined the Division of Structural Biology (STRUBI) at the University of Oxford (UK) as an EMBO- and Marie Curie Actions-funded postdoctoral fellow. There, he transitioned into molecular neuroscience and investigated the structural biology of synaptic protein complexes in the lab of Prof. A. Radu Aricescu.
The interests of our team are at the interface of structural biology, protein engineering, and molecular neuroscience. We aim to understand principles of neuronal signalling in health and disease, and to translate these to the cellular and organismal level.
We use mammalian protein expression, protein chemistry, biophysical methods, X-ray crystallography and cryo-electron microscopy to study the interaction determinants and structures of synaptic protein complexes involved in neurodevelopmental disorders and neuronal disease. We use combinatorial methods and protein engineering to discover novel binders and manipulate protein sequence, structure and function, to facilitate structural studies as well as enable therapeutic targeting of these complexes.
Synthetic excitatory synaptic organizer - Science, August 2020
A synthetic synaptic organizer protein restores glutamatergic neuronal circuits
The human brain contains trillions of synapses within a vast network of neurons. Synapse remodeling is essential to ensure the efficient reception and integration of external stimuli and to store and retrieve information. Building and remodeling of synapses occurs throughout life under the control of synaptic organizer proteins. Errors in this process can lead to neuropsychiatric or neurological disorders. Suzuki et al. combined structural elements of natural synaptic organizers to develop an artificial version called CPTX, which has different binding properties (see the Perspective by Salinas). CPTX could act as a molecular bridge to reconnect neurons and restore excitatory synaptic function in animal models of cerebellar ataxia, familial Alzheimer’s disease, and spinal cord injury. The findings illustrate how structure-guided approaches can help to repair neuronal circuits.
Authors: Kunimichi Suzuki, Jonathan Elegheert, Inseon Song, Hiroyuki Sasakura, Oleg Senkov, Keiko Matsuda, Wataru Kakegawa, Amber J. Clayton, Veronica T. Chang, Maura Ferrer-Ferrer, Eriko Miura, Rahul Kaushik, Masashi Ikeno, Yuki Morioka, Yuka Takeuchi, Tatsuya Shimada, Shintaro Otsuka, Stoyan Stoyanov, Masahiko Watanabe, Kosei Takeuchi, Alexander Dityatev, A. Radu Aricescu, Michisuke Yuzaki
Jonathan Elegheert is 2022 Laureate FSER
Created on the initiative of a group of scientists wishing to have fundamental research recognised, the Cercle FSER is an association under the French law of 1901. It brings together more than 70 scientists who are committed to fostering the dialogue of science with and for society. To this end, its actions are organised along two main lines: (1) to promote research, its approaches and its challenges to young people, (2) to encourage the involvement of research staff in dialogue with the general public. In 2021, 35,000 people benefited from its actions!
Each year, the Cercle FSER supports young researchers who excel in the field of biomedical research. The candidates are nominated by scientific personalities, former laureates or the CNRS and INSERM. Then, each candidate is selected by a jury on the basis of the quality of his or her past and present scientific research, but also on the basis of his or her performance in the interview.
Thus, Jonathan Elegheert, CNRS scientist (charge de recherches), is one of four laureates of 2022 Cercle FSER! In particular, he obtained the FSER prize, which aims to help young researchers during the first years of their laboratory's creation. This grant enabled Jonathan Elegheert and his team to co-finance a new machine to study protein-protein interactions.
In 2021, Lisa Roux, CNRS research director, was laureate. Like any laureate, the Cercle FSER has enabled her to organise meetings at the Fondation des Treilles! Moreover, as a winner of the Cercle FSER, her objective for 2023 is to participate in the Déclics operation (scientific mediation action with high school students).
One per year, the Cercle FSER organises meetings so that researchers from all disciplines can meet. These exchanges allow them to come up with new and original ideas! The winter meeting took place from 24 to 27 January in Alpe d'Huez. During this meeting, all participants were invited to make a scientific presentation. Thus, Jonathan Elegheert and Lisa Roux intoduced the field of neuroscience! Both presented their research topic: "Structural biology and engineering of neuronal proteins" for Jonathan Elegheert and "Olfaction and Memory" for Lisa Roux.
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