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Offers currently published on the portal :
Research Engineer Position in Stem Cell Biology
INSTITUTE OF HUMAN GENETICS, Montpellier, France
A research engineer position is available in the laboratory of “Genome Surveillance and Stability” at the Institute of Human Genetics of Montpellier starting from January 2023 to develop a project on the genomic stability of pluripotent stem cells. The candidate will benefit from an exceptional scientific environment and state-of-the-art core facilities provided by the Institute of Human Genetics.
The candidate will use state-of-the art cellular and molecular biology techniques to study novel molecular pathways regulating genome stability in pluripotent stem cells. Highly motivated candidates with a Ph.D., or equivalent, a strong background in molecular and cellular biology, and a significant experience in stem cell research are encouraged to apply.
Montpellier is an international and scientifically dynamic city located in the south of France very well connected to Paris and other European cities.
Applications must state the name of at least two referees and can be sent by email (domenico.maiorano@igh.cnrs.fr) or by regular mail to Domenico MAIORANO, Institute of Human Genetics.141, rue de la Cardonille. 34396 Montpellier Cedex 5. France.
Thesis topic : Seitz team, IGH
Gene regulation by microRNAs : from molecules to the organism
Gene regulation and homeostasis are two universal principles in the living world. Each one has been well studied, and current analysis methods allowed major advances in their understanding. But they have never been analyzed from the same perspective, even though they exhibit an intrinsic antagonism : gene regulation tends to alter the response of biological systems, while homeostatic mechanisms tend to give them inertia. Unexpected characteristics appear to emerge from their confrontation.
This PhD project deals with the antagonism between homeostasis and one mode of gene regulation : repression by microRNAs. These regulatory RNAs repress their targets to a very small extent (less than 2-fold), while interacting with many targets (a few hundreds of targets per mammalian microRNA). Current target identification methods (based on molecular biology and bio-informatics) tend to neglect that quantitative aspect.
The PhD project aims at identifying microRNA/mRNA interactions that trigger phenotypic consequences at the organism scale, among the numerous microRNA/mRNA interactions happening at the molecular scale. Drosophila genetics, cell culture and bio-informatics analyses now offer efficient tools for the precise interrogation of macroscopic consequences of molecular interactions (through CRISPR/Cas9 genome editing, high-throughput molecular biology, measurement of phylogenetic conservation on hundreds of genomes, ...).
Our lab is specialized in microRNA biology, using equally experimental biology and bio-informatics. Training young researchers is very important to us (every former lab member has published his/her work with us, and all of them still work in research), as well as the involvement of young researchers in the definition of strategies and research projects. We are located in the institute of human genetics (UMR 9002, CNRS and Montpellier univ.). More information on our work and our publications : on our lab’s website.
Candidates are encouraged to compete for a PhD fellowship from the CBS2 graduate school in order to apply
Open position for a research technician in molecular and cellular biology IGH, CNRS Montpellier
Project: Systematic analysis of gene expression in single cells by high throughput imaging of single mRNAs
Characterizing gene expression at the level of single cells and in the context of the native cellular space is a challenge that is driving important scientific breakthroughs. Messenger RNAs are synthesized at their gene in the nucleoplasm and translated into proteins at specific cytoplasmic locations. Single molecule FISH (smFISH) identifies and localizes all mRNA molecules produced by a given gene, in every cell of large populations. SmFISH thus possesses unique advantages to study gene expression, mRNA localization and local translation. In this project, the candidate will use innovative smFISH methods to perform large scale smFISH screens. In particular, the candidate will image thousands of mRNA in neuronal cell culture to measure RNA localization in dendrites and axons, and determine how this is altered in neurodegenerative diseases such as FragileX syndrome or spinal muscular atrophy.
The candidate will also manipulate neurogenic iPS cells by CRISPR/Cas9 to create mutant cell lines mimicking these diseases. The candidate will work in an interdisciplinary environment with teams in computer vision and biophysics (Thomas Walter lab at the Ecole des Mines in Paris ; Florian Müller in Pasteur ). These teams will analyze the images produced by the person hired.
Requirements: Master in Life Sciences. Theoretical and practical experience in molecular and cellular biology techniques. Skills in imaging and large scale screens will be a plus. The candidate should be interested to work within an inter-disciplinary environment, and to work autonomously while integrated in a team.
Where: Edouard Bertrand lab at the IGH/CNRS in Montpellier
When: September 1st, 2022; 2 year contract with possibilities for extension.
Application: Please provide a motivation letter, CV and contact details of previous supervisors. Application should be sent to Dr. Edouard Bertrand.
Deadline: July 5th
Recent publications
• A computational framework to study sub-cellular mRNA localization. Nat. Comm, 2018, 9:4584. Samacoits, A., Chouaib, R., Safieddine, A., Traboulsi, A., Ouyang, W., Zimmer, C., Peter, M., Bertrand, E.*, Walter, T.*, Mueller, F.*
• FISH-quant v2: a scalable and modular tool for smFISH image analysis. Imbert A, Ouyang W, Safieddine A, Coleno E, Zimmer C, Bertrand E, Walter T, Mueller F. RNA. 2022; 28:786-795.
• Safieddine, A., Coleno, E., Salloum, S., Traboulsi, A., Kwon OS., Lionneton, F., Georget, V., Robert, MC., Gostan, T., Lecellier, C., Chouaib, R., Pichon, X., Le Hir, H. , Zibara, K., Peter, M., and E. Bertrand. A conserved choreography of mRNAs at centrosomes reveals a localization mechanism involving active polysome transport. Nat. Comm (2021), 12:1352.
• Chouaib, R., Safieddine, A., Pichon, X., Kwon, OS., Samacoits, A., Traboulsi, AM., Tsanov, N., Robert, MC., Coleno, E., Poser, I., Zimmer, C., Hyman, A. A., Le Hir, H., Zibara, K., Peter, M., Mueller, F.*, Walter, T.*, and E. Bertrand*. A localization screen reveals translation factories and widespread co-translational protein targeting. Developmental Cell, 2020, 54:773-791. See commentary in Dev. Cell doi:10.1016/j .devcel.2020.09.006
• A growing toolbox to image gene expression in single cells: sensitive approaches for demanding challenges. Mol. Cell, 2018, 71:468-480. Pichon, X., Lagha, M., Mueller, F. and E. Bertrand. Invited review f or the 20th anniversary of the j ournal; featured article of the issue