Dr. Lucie Jeannotte is a regular researcher at the CHU Research Centre of Québec- Université Laval, Oncology Axis, and Professor in the Department of Molecular Biology, Medical Biochemistry and Pathology of the Faculty of Medicine at Université Laval. She is also a regular researcher at the Centre for Cancer Research at Université Laval. Her research aims at understanding the molecular mechanisms involved in the formation of the mammalian embryo with a specific interest for Hox genes. Hox genes encode transcriptional factors that play key roles in the developmental hierarchy leading to pattern formation of the embryo. Loss of Hox gene function in mice results in numerous malformations of skeleton and organs, among others, that can impair survival. The developmental origin of several diseases, including cancers, reveals how important it is to understand the mechanisms that control embryogenesis.

Function of the Hoxa5 gene in the formation of the respiratory system

Lung development implies a coordinated regulation of numerous molecules and factors. The team of Dr. Jeannotte has characterized the Hoxa5 mutant mouse line et revealed the critical and unique role of this gene in survival at birth. The loss of Hoxa5 function cause severe defects of the respiratory system that result in death of the mutants at birth. The malformations mimic pediatric congenital diseases, such as tracheal stenosis, lung hypoplasia and congenital diaphragmatic hernia as well as chronic obstructive pulmonary diseases (COPD), a major cause of death in the human population. Hoxa5 mutant mice thus provide a unique animal model to further study these pathologies. Dr. Jeannotte is interested in identifying the targets of HOXA5 transcriptional factor in the respiratory system in order to define the molecular mechanisms perturbed by the Hoxa5 mutation that underlie the phenotypes observed and may lead to future therapies.

Role of YY1 in the pathogenesis of the pleuropulmonary blastoma

The pleuropulmonary blastoma (PPB) is a rare pediatric lung tumor that arises during fetal life. It results from the progression of abnormal lung cysts to an aggressive sarcoma with poor survival. The team of Dr. Jeannotte has produced mutant mice devoid of Yy1 function in lung epithelium. This mutation causes lung cysts as those seen in PPB patients. YY1 is a transcription factor essential for embryo development and survival. YY1 expression is reduced in PPB lung tumors raising the hypothesis that the loss of Yy1 function is important for PPB pathogenesis. To determine the role and mechanisms of action of YY1 in PPB, Dr. Jeannotte aims at identifying  the mechanisms of action of YY1 in lung formation in order to resolve its implication in PPB formation. These studies may reveal novel molecular targets for the design of effective and innovative therapies and better tools for the diagnosis and prognosis of this severe cancer.

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New filovirus disease classification and nomenclature.

Journal Article

Nat Rev Microbiol, 17 (5), pp. 261-263, 2019, ISSN: 1740-1526.

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Bergeron F, Boulende Sab A, Bouchard MF, Taniguchi H, Souchkova O, Brousseau C, Tremblay JJ, Pilon N, Viger RS

Phosphorylation of GATA4 serine 105 but not serine 261 is required for testosterone production in the male mouse.

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Andrology, 7 (3), pp. 357-372, 2019, ISSN: 2047-2919.

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Wintzer-Wehekind J, Alperi A, Houde C, Cote JM, Guimaraes LFC, Cote M, Rodes-Cabau J

Impact of Discontinuation of Antithrombotic Therapy Following Closure of Patent Foramen Ovale in Patients With Cryptogenic Embolism.

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Am J Cardiol, 123 (9), pp. 1538-1545, 2019, ISSN: 0002-9149.

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Liao S, He Q, Yang L, Liu S, Zhang Z, Guidoin R, Fu Q, Xie X

Toward endothelialization via vascular endothelial growth factor immobilization on cell-repelling functional polyurethanes.

Journal Article

J Biomed Mater Res B Appl Biomater, 107 (4), pp. 965-977, 2019, ISSN: 1552-4973.

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Haider M, Ladurner C, Mayr R, Tandogdu Z, Fritsche HM, Fradet V, Comploj E, Pycha A, Lemire F, Lacombe L, Fradet Y, Toren P, Lodde M

Use and duration of antibiotic prophylaxis and the rate of urinary tract infection after radical cystectomy for bladder cancer: Results of a multicentric series.

Journal Article

Urol Oncol, 37 (5), pp. 300.e9-300.e15, 2019, ISSN: 1078-1439.

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Emond JP, Labriet A, Desjardins S, Rouleau M, Villeneuve L, Hovington H, Brisson H, Lacombe L, Simonyan D, Caron P, Perigny M, Tetu B, Fallon JK, Klein K, Smith PC, Zanger U, Guillemette C, Levesque E

Factors Affecting Interindividual Variability of Hepatic UGT2B17 Protein Expression Examined Using a Novel Specific Monoclonal Antibody.

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Drug Metab Dispos, 47 (5), pp. 444-452, 2019, ISSN: 0090-9556.

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Emond T, de Montigny F, Guillaumie L

Exploring the needs of parents who experience miscarriage in the emergency department: A qualitative study with parents and nurses.

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J Clin Nurs, 28 (9-10), pp. 1952-1965, 2019, ISSN: 0962-1067.

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Maheu-Giroux M, Diabate S, Boily MC, Jean-Paul N, Vesga JF, Baral S, Abo K, Wognin V, Diouf D, Alary M

Cost-Effectiveness of Accelerated HIV Response Scenarios in Côte d'Ivoire.

Journal Article

J Acquir Immune Defic Syndr, 80 (5), pp. 503-512, 2019, ISSN: 1525-4135.

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Ke Y, Dury A, Labrie F

A highly sensitive LC-MS/MS method for the simultaneous quantitation of serum androstane-3α, 17β-diol and androstane-3β, 17β-diol in post-menopausal women.

Journal Article

J Chromatogr B Analyt Technol Biomed Life Sci, 1113 , pp. 30-36, 2019, ISSN: 1570-0232.

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Maneval D, Ozell B, Despres P

pGPUMCD: an efficient GPU-based Monte Carlo code for accurate proton dose calculations.

Journal Article

Phys Med Biol, 64 (8), pp. 085018, 2019, ISSN: 0031-9155.

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