UMR3244 – Dynamics of Genetic Information

Teams in this unit aim at elucidating the regulation of mechanisms that are crucial to the maintenance of genome integrity, like DNA replication, repair and recombination, as well as the role of cell cycle checkpoints and non-coding RNAs in genome and epigenome maintenance.

Experimental models include yeast, mammalian cell lines, mutant mouse models and tumour samples. A large variety of methods is used including genetic, molecular and cytogenetic techniques, fluorescence in situ hybridisation and DNA ‘combing’, as well as high throughput sequencing approaches such as DNA-seq for mutation landscape analyses, RNA-seq for transcriptome analyses and ChIP-seq mapping of chromatin-associated proteins and their genome-wide modulation in response to DNA damages.

 

Key publications

Year of publication 2020

Aurore Sanchez, Céline Adam, Felix Rauh, Yann Duroc, Lepakshi Ranjha, Bérangère Lombard, Xiaojing Mu, Mélody Wintrebert, Damarys Loew, Alba Guarné, Stefano Gnan, Chun-Long Chen, Scott Keeney, Petr Cejka, Raphaël Guérois, Franz Klein, Jean-Baptiste Charbonnier, Valérie Borde (2020 Nov 17)

Exo1 recruits Cdc5 polo kinase to MutLγ to ensure efficient meiotic crossover formation.

Proceedings of the National Academy of Sciences of the United States of America : DOI : 202013012
Gnan Stefano, Liu Yaqun, Spagnuolo Manuela, Chen Chun-Long (2020 Aug 31)

The impact of transcription-mediated replication stress on genome instability and human disease

Genome Instability & Disease : 1 : 207-234 : DOI : 10.1007/s42764-020-00021-y
Elda Cannavo, Aurore Sanchez, Roopesh Anand, Lepakshi Ranjha, Jannik Hugener, Céline Adam, Ananya Acharya, Nicolas Weyland, Xavier Aran-Guiu, Jean-Baptiste Charbonnier, Eva R Hoffmann, Valérie Borde, Joao Matos, Petr Cejka (2020 Aug 21)

Regulation of the MLH1-MLH3 endonuclease in meiosis.

Nature : DOI : 10.1038/s41586-020-2592-2
Alexy Promonet, Ismaël Padioleau, Yaqun Liu, Lionel Sanz, Anna Biernacka, Anne-Lyne Schmitz, Magdalena Skrzypczak, Amélie Sarrazin, Clément Mettling, Maga Rowicka, Krzysztof Ginalski, Frédéric Chedin, Chun-Long Chen, Yea-Lih Lin, Philippe Pasero (2020 Aug 10)

Topoisomerase 1 prevents replication stress at R-loop-enriched transcription termination sites.

Nature communications : 3940 : DOI : 10.1038/s41467-020-17858-2
Wang W., Klein K., Proesmans K., Yang H., Marchal C., Zhu X., Borrman T., Hastie A., Weng Z., Bechhoefer J., Chen C.L., Gilbert D.M., Rhind N. (2020 Aug 1)

Genome-Wide Mapping of Human DNA Replication by Optical Replication Mapping Supports a Stochastic Model of Eukaryotic Replication Timing

bioRxiv : 2020.08.24.263459 : DOI : 10.1101/2020.08.24.263459
Eléonore Toufektchan, Vincent Lejour, Romane Durand, Neelam Giri, Irena Draskovic, Boris Bardot, Pierre Laplante, Sara Jaber, Blanche P Alter, José-Arturo Londono-Vallejo, Sharon A Savage, Franck Toledo (2020 Apr 18)

Germline mutation of MDM4, a major p53 regulator, in a familial syndrome of defective telomere maintenance.

Science advances : eaay3511 : DOI : 10.1126/sciadv.aay3511