14/09/2022
The Human Resources Strategy for Researchers

PhD student in molecular genetics

This job offer has expired


  • ORGANISATION/COMPANY
    CNRS
  • RESEARCH FIELD
    Biological sciencesBiology
  • RESEARCHER PROFILE
    First Stage Researcher (R1)
  • APPLICATION DEADLINE
    25/10/2022 23:59 - Europe/Brussels
  • LOCATION
    France › MARSEILLE 09
  • TYPE OF CONTRACT
    Temporary
  • JOB STATUS
    Full-time
  • HOURS PER WEEK
    35
  • OFFER STARTING DATE
    01/01/2023

OFFER DESCRIPTION

IBDM is located on the Luminy Campus and comprises about 240 permanent researchers, professors, engineers and technicians and non-permanent staff (CDD, post-docs, PhD students, trainees) distributed over 21 research teams and 11 technical platforms and services.
IBDM is a joint research unit under the supervision of the CNRS and AMU, which explores the field of developmental biology and associated pathologies.
The activity will be carried out within the team " Host pathogen interaction in the Drosophila model" directed by Julien ROYET
As the team is composed of several nationalities, the practice of the English language is essential.

Our body hosts billions of bacteria that colonize our skin our lungs and our gut. The beneficial effect of some of these microorganisms on the development and functioning of these bodies part has been well documented. Recent studies show that by acting on the nervous system, gut bacteria also called microbiota, can also change the behavior of infected individuals (4). However, the underlying cellular and molecular mechanisms remain mostly unknown. The laboratory of Julien Royet uses the Drosophila model to dissect the molecular dialog between the microbiota and the nervous system of the host. We have recently shown that infected flies have an altered behavior and demonstrated that bacterial peptidoglycan is changing the comportment of infected Drosophila by modulating NF-kB signaling in octopaminergic neurons (1,2,5). Using Drosophila genetics, CRISPR-mediated genome editing and latest imaging technologies, the recruited student will perform experiments to understand how bacteria modulates the activity of neurons and how this modulation translates into behavioural changes. Given the remarkable evolutionary conservation in host defense and neuronal mechanisms, we believe that the results obtained should be of significant relevance to an in-depth understanding of bacteria-neurons interactions in organisms other than Drosophila and namely in mammals in which such analyses are difficult to conduct.

Recent publications of the host lab:
1. Kurz CL, et. al. Peptidoglycan sensing by octopaminergic neurons modulates Drosophila oviposition. Elife. 2017 Mar 7;6. pii: e21937.
2. Charroux B, et al. Cytosolic and Secreted Peptidoglycan-Degrading Enzymes in Drosophila Respectively Control Local and Systemic Immune Responses to Microbiota. Cell Host Microbe. 2018 Feb 14;23(2):215-228.e4.
3. Masuzzo A, et al, Peptidoglycan-dependent NF-κB activation in a small subset of brain octopaminergic neurons controls female oviposition. Elife. 2019 Oct 29;8:e50559. doi: 10.7554/eLife.50559.
4. Masuzzo A, Montanari M, Kurz L, Royet J. How Bacteria Impact Host Nervous System and Behaviors: Lessons from Flies and Worms. Trends Neurosci. 2020 Dec;43(12):998-1010.
5. Charroux B, Daian F, Royet J. Drosophila Aversive Behavior toward Erwinia carotovora carotovora Is Mediated by Bitter Neurons and Leukokinin. iScience. 2020 Jun 26;23(6):101152. doi: 10.1016/j.isci.2020.101152.
6. Martina M and J Royet. Impact of Microorganisms and Parasites on Neuronally Controlled Drosophila Behaviours Cells 2021, 10(9), 2350; https://doi.org/10.3390/cells10092350

More Information

Required Research Experiences

  • RESEARCH FIELD
    Biological sciences
  • YEARS OF RESEARCH EXPERIENCE
    None
  • RESEARCH FIELD
    Biological sciencesBiology
  • YEARS OF RESEARCH EXPERIENCE
    None

Offer Requirements

  • REQUIRED EDUCATION LEVEL
    Biological sciences: Master Degree or equivalent
  • REQUIRED LANGUAGES
    FRENCH: Basic
Work location(s)
1 position(s) available at
Institut de Biologie du Développement de Marseille
France
MARSEILLE 09

EURAXESS offer ID: 836796
Posting organisation offer ID: 31932

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