Chromatin and Gene Expression

Kerstin Bystricky

Professeur, UPS
05 61 33 58 31

Team members

  • Anne-Claire Lavigne
  • Nicolas Tanguy Le Gac
  • Silvia Kocanova
  Technical staff
  • Isabelle Goiffon
  • Fatima Moutahir
  • Flavien Raynal
  • Perrine Uhart
  • Noémie Kempf
  • Ludmila Recoules


We want to get a high resolution climpse at chromatin structure and chromosome behavior with respect to fundamental aspects of double strand break processing, transcription activation and viral infection. We develop methods to label DNA in fixed and living cells using fluorescent probes and develop non-invasive labeling techniques to visualize and quantify DNA. The technology transfer from yeast to human cells is an asset in the laboratory, and opens new perspectives in the field of chromatin dynamics. Applying mathematical modeling, we attempt to elucidate the functional relationship between the location of a gene, its inherent dynamics and its response to stimuli. We explore kinetics of long range chromatin interactions in order to obtain new structural insights on chromatin organization based on physical parameters. We analyse epigenetic mechanisms of gene expression in mammary tumor cells, investigating in particular the chromatin structure and its modifications at estrogen receptor target genes, and biophysical properties of chromosomes and their role in DNA double strand break repair in yeast. Our challenge is to experimentally act upon structure to probe impact on function.




Chromatin dynamics and regulation of gene expression

Cancer chromatin signatures – role of histone variants

Chromosome dynamics and DNA repair


View all publications





Hafida SELLOU, postdoc 4/17-4/18
Haitham SHABAN, postdoc 8/15-7/18
Franck GALLARDO, postdoc 06/10-12/13
Mathieu DALVAI, postdoc 10/08-12/12

PhD students:

Thomas GERMIER, PhD 11/2018 (PhD student 10/15-11/18)
Sylvain AUDIBERT, PhD 11/2017 (PhD student 10/13-11/17, ATER 16-17, AI 01-03/18)
Barbara LAMBOUR, PhD 04/2016 (PhD student 02/14-04/16)
Hicham SAAD, PhD 11/2013
Luca BELLUCCI, PhD 03/2013
Imen LASSADI, PhD 08/2012
Mahta MAZAHERI, PhD 05/2009
Laurence FLEURY, PhD 04/2008

Ingénieurs and technical personnel:

Stéphanie CAZE-SUBRA, IE 09/16-5/17 (now CDI Evotec Toulouse)
Sandrine KAPPLER-GRATIAS, IE 06/14-3/17 (now CDI NeoVirTech Toulouse)
Laurence FLEURY, IE 06/12-04/13 (now IR CNRS Albi territorial office)

Université Paul Sabatier
118 Route de Narbonne

31062 TOULOUSE Cedex

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