Sylvie Lesage

Office Phone: 514-252-3400 ext. 4649
Fax: 514-252-3569
Lab Phone: 514-252-3400 ext. 4653

Research Axis  Immunology-Oncology
Research Unit  Cellular Immunogenetics


  • Full Research Professor


  • Senior Postdoctoral Internship with Dr. Marika Sarfati, University of Montreal (2002-2005).
  • Postdoctoral Internship with Dr. Christopher C. Goodnow, Australian National University (1999-2002).
  • Ph.D., Immunology (supervisor Dr. Patrice Hugo), McGill University (1995-1999).
  • B.Sc., Immunology, McGill University (1992-1995).


  • Senior FRQS award (2015-2018)
  • CIHR, New Investigator Award (2010-2015)
  • Junior Investigator Level 1, FRSQ (2007-2011).
  • CIHR Senior Research Fellowship (2002-2007).
  • Postdoctoral Fellowship, CIHR (1999-2002).
  • Graduate Studies Award, FRSQ (1995-1999).

Research Interests

Our research goals are aimed at defining homeostatic regulation of cell populations composing the immune system and to identify their impact on the susceptibility of complex genetic diseases such as autoimmune diseases and cancer.

In particular, we study variations of T cell and dendritic cell sub-populations in various strains of mice. The ultimate goal is to increase our understanding of the cellular population dynamics in the immune system. This research will provide the basis for cellular therapy protocols aimed at restoring the immune balance to prevent the onset or abrogate the progression of various auto-immune diseases and lymphoid cancers.

Technologies: congenic and transgenic mice, cellular immunology, multiparametric flow cytometry, genetic association studies of polymorphisms.

Dr. Lesage and some of her students appear in the documentary movie on type 1 diabetes.



Research Associate:

  • Erin E. Hillhouse 

Research Assistants:

  • Geneviève Chabot-Roy
  • Alexandre Paradis

Ph.D. Students:

  • Roxanne Collin, FRQS Scholarship
  • Cindy Audiger, Lucie-Besner and MDRC scholarships

M.Sc. Student:

  • Victor Mullins-Dansereau, Université de Montréal recruitment Scholarship

B.Sc. Students:

  • Félix Lombard-Vadnais



PRevious graduate students:


  • Claudine Beauchamp, M.Sc., 2007
  • Marie Vilquin, Master II, 2009
  • Lisa Bellemare, M.Sc. 2012 
  • Lorie Guilbault, M.Sc. 2016


  • Véronique Dugas, Ph.D.,2011
  • Fanny Guimont-Desrochers, Ph.D., 2013
  • Erin Hillhouse, Ph.D., 2013  


Guimont-Desrochers, F., Boucher, G., Dong, Z., Dupuis, M., Veillette, A., Lesage, S. Redefining interferon-producing killer dendritic cells as a novel intermediate in NK cell differentiation. 2012. Blood 119, 4349-4357. Highlighted as “Plenary Paper” by the journal. See also: Inside Blood, Zitvogel, L. & Housseau, F. Blood 119, 4345-4346 (2012).

Chognard, G., Bellemare, L., Pelletier, A.N., Dominguez-Punaro, M.C., Beauchamp, C., Guyon, M.J., Charron, G., Morin, N., Sivanesan, D., Kuchroo, V., Xavier, R., Michnick, S.W., Chemtob, S., Rioux, J.D., Lesage, S. The dichotomous pattern of IL-12R and IL-23R expression elucidates the role of IL-12 and IL-23 in inflammation. 2014. Plos One. 9(2):e89092. doi: 10.1371/journal.pone.0089092.

Collin, R., Dugas, V., Pelletier, A.N., Chabot-Roy, G., Lesage, S. The mouse Idd2 locus is linked to the proportion of immunoregulatory DN T cells, a trait associated with autoimmune diabetes resistance. 2014. J. Immunol. 193(7): 3503-3512. Recommended by the Faculty of 1000.

Collin, R., Dugas, V., Chabot-Roy, G., Salem, D., Zahn, A., Di Noia, J.M., Rauch, J., Lesage, S. Autoimmunity and antibody affinity maturation are modulated by genetic variants on mouse chromosome 12. 2015. J. Autoimmun. 58 : 90-99. doi: 10.1016/j.jaut.2015.01.007.

Pelletier, A.N., Guilbault, L., Guimont-Desrochers, F., Hillhouse, E.E., Lesage, S. NK cell proportion and number is influenced by genetic loci on chromosomes 8, 9 and 17. 2016. J.Immunol. 196: 2627-2636.  doi:10.4049/jimmunol.1502284.

Complete list of Dr Lesage's publications (PubMed)



  • Natural Sciences and Engineering Council of Canada (NSERC)
  • Genome Canada
  • Liana’s Dream Foundation
  • Cancer Research Society (CRS)
  • Diabète Québec
  • Maisonneuve-Rosemont Hospital Foundation

Product of FQRNT funding: