Dr.  Jean Charron is an investigator at the Research Centre of the CHU of Québec-Université Laval in the Oncology axis. He is also Professor at the Department of molecular biology, medical biochemistry and pathology in the Faculty of medicine at Université Laval. His research activities focus on the functional characterization of the decision-making mechanisms of the ERK/MAPK signaling pathway in cells when exposed to developmental or environmental cues. These mechanisms are essential for embryonic development and homeostasis of every living throughout life.  Any failure of interpretation of cell signalling leads to malformations or pathologies.

Role of the ERK/MAPK pathway in lung development

The development of the respiratory tract is complex and requires several steps of morphogenesis, differentiation and maturation to form the definitive lung. The integration of signals induces by the interaction of secreted factors with their receptors or by cell-cell interactions is essential for lung formation. Dr. Charron’s laboratory examines the role of the ERK/MAPK pathway in lung development using the mouse as a model.  His team has already highlighted the role of the ERK/MAPK pathway in lung morphogenesis during bronchial branching and the formation of tracheal cartilage. These defects faithfully recapitulate the phenotypes of significant and costly human diseases, including lung hypoplasia, lung agenesis and tracheomalacia, each representing a major public health concern. These studies will play an increasingly important role in providing insights into the molecular mechanisms underlying fetal and neonatal diseases and in allowing development of novel targeted therapies.

Role of the ERK/MAPK path in the development of autoimmune diseases

The work of the team of Dr. Charron has also shown that decreased ERK/MAPK signaling in hematopoietic cells causes the abnormal production of autoantibodies directed against nuclear proteins and DNA double strand in mice. Over time, these mice develop a glomerulonephritis leading to kidney failure and severe anemia. These symptoms are similar to those of systemic lupus erythematosus (SLE), a severe auto-immune disease more frequent in women than in men. In the murine model generated in the laboratory of Dr. Charron, the females are also 5 times more likely to develop the disease than males. Work is in progress in Dr. Charron’s laboratory to identify which immune cell types are involved in the onset of the auto-immune disease and which molecular mechanisms are involved. This study will provide understanding of the molecular processes leading to the development of autoimmune diseases, and will eventually lead to new therapeutic approaches adapted to sex.

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Québec, Québec
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Jeannotte L, Lemieux M, Charron J, Poirier F, Robertson EJ

Specification of axial identity in the mouse: role of the Hoxa-5 (Hox1.3) gene.

Journal Article

Genes Dev, 7 (11), pp. 2085-96, 1993, ISSN: 0890-9369.

Abstract | Links:

Charron J, Malynn BA, Fisher P, Stewart V, Jeannotte L, Goff SP, Robertson EJ, Alt FW

Embryonic lethality in mice homozygous for a targeted disruption of the N-myc gene.

Journal Article

Genes Dev, 6 (12A), pp. 2248-57, 1992, ISSN: 0890-9369.

Abstract | Links:

Shinkai Y, Rathbun G, Lam KP, Oltz EM, Stewart V, Mendelsohn M, Charron J, Datta M, Young F, Stall AM, et al.

RAG-2-deficient mice lack mature lymphocytes owing to inability to initiate V(D)J rearrangement.

Journal Article

Cell, 68 (5), pp. 855-67, 1992, ISSN: 0092-8674.

Abstract | Links:

Charron J, Malynn BA, Robertson EJ, Goff SP, Alt FW

High-frequency disruption of the N-myc gene in embryonic stem and pre-B cell lines by homologous recombination.

Journal Article

Mol Cell Biol, 10 (4), pp. 1799-804, 1990, ISSN: 0270-7306.

Abstract | Links:

Charron J, Richard-Foy H, Berard DS, Hager GL, Drouin J

Independent glucocorticoid induction and repression of two contiguous responsive genes.

Journal Article

Mol Cell Biol, 9 (7), pp. 3127-31, 1989, ISSN: 0270-7306.

Abstract | Links:

Drouin J, Nemer M, Charron J, Gagner JP, Jeannotte L, Sun YL, Therrien M, Tremblay Y

Tissue-specific activity of the pro-opiomelanocortin (POMC) gene and repression by glucocorticoids.

Journal Article

Genome, 31 (2), pp. 510-9, 1989, ISSN: 0831-2796.

Abstract | Links:

Drouin J, Charron J, Gagner JP, Jeannotte L, Nemer M, Plante RK, Wrange O

Pro-opiomelanocortin gene: a model for negative regulation of transcription by glucocorticoids.

Journal Article

J Cell Biochem, 35 (4), pp. 293-304, 1987, ISSN: 0730-2312.

Abstract | Links:

Charron J, Drouin J

Glucocorticoid inhibition of transcription from episomal proopiomelanocortin gene promoter.

Journal Article

Proc Natl Acad Sci U S A, 83 (23), pp. 8903-7, 1986, ISSN: 0027-8424.

Abstract | Links:

Drouin J, Chamberland M, Charron J, Jeannotte L, Nemer M

Structure of the rat pro-opiomelanocortin (POMC) gene.

Journal Article

FEBS Lett, 193 (1), pp. 54-8, 1985, ISSN: 0014-5793.

Abstract | Links:

Cohen EA, Charron J, Perret J, Langelier Y

Herpes simplex virus ribonucleotide reductase induced in infected BHK-21/C13 cells: biochemical evidence for the existence of two non-identical subunits, H1 and H2.

Journal Article

J Gen Virol, 66 ( Pt 4) , pp. 733-45, 1985, ISSN: 0022-1317.

Abstract | Links:

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Active projects

  • Centre de recherche du CHU de Québec - Université Laval, Subvention, Centre hospitalier universitaire de Québec - Université Laval, Centres de recherche affiliés, from 2017-01-01 to 2099-12-31
  • Centre de recherche sur le cancer, Subvention, Institutionnel - BDR, BDR - Centres de recherche reconnus, from 1996-05-01 to 2022-06-13
  • Role of the ERK/MAPK pathway in intestine development and homeostasis., Subvention, Conseil de recherches en sciences naturelles et génie Canada, Subventions à la découverte SD (individuelles et d'équipe), from 2016-04-01 to 2021-03-31
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