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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De Wals P, Lemeur JB, Ayukawa H, Proulx JF

Middle ear abnormalities at age 5 years in relation with early onset otitis media and number of episodes, in the Inuit population of Nunavik, Quebec, Canada.

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Int J Circumpolar Health, 78 (1), pp. 1599269, 2019, ISSN: 1239-9736.

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Paquin V, Sandy G, Perrault-Sullivan G, Fortin G, Cauchon M, Fletcher C, Ouellet J, Lemire M

Twenty "must-read" research articles for primary care providers in Nunavik: scoping study and development of an information tool.

Journal Article

Int J Circumpolar Health, 78 (1), pp. 1578638, 2019, ISSN: 1239-9736.

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Laberge A, Ayoub A, Arif S, Larochelle S, Garnier A, Moulin VJ

α-2-Macroglobulin induces the shedding of microvesicles from cutaneous wound myofibroblasts.

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J Cell Physiol, 234 (7), pp. 11369-11379, 2019, ISSN: 0021-9541.

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Cote JA, Gauthier MF, Ostinelli G, Brochu D, Bellmann K, Marette A, Julien F, Lebel S, Tchernof A

Characterization and visualization of the liposecretion process taking place during ceiling culture of human mature adipocytes.

Journal Article

J Cell Physiol, 234 (7), pp. 10270-10280, 2019, ISSN: 0021-9541.

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Fiocco AJ, Krieger L, D'Amico D, Parrott MD, Laurin D, Gaudreau P, Greenwood C, Ferland G

A systematic review of existing peripheral biomarkers of cognitive aging: Is there enough evidence for biomarker proxies in behavioral modification interventions?: An initiative in association with the nutrition, exercise and lifestyle team of the Canadian Consortium on Neurodegeneration in Aging.

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Ageing Res Rev, 52 , pp. 72-119, 2019, ISSN: 1568-1637.

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Massamba VK, Talbot D, Milot A, Pearce N, Trudel X, Brisson C

Assessment of the healthy worker survivor effect in the relationship between psychosocial work-related factors and hypertension.

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Occup Environ Med, 76 (6), pp. 414-421, 2019, ISSN: 1351-0711.

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Dore E, Boilard E

Roles of secreted phospholipase A2 group IIA in inflammation and host defense.

Journal Article

Biochim Biophys Acta Mol Cell Biol Lipids, 1864 (6), pp. 789-802, 2019, ISSN: 1388-1981.

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Leclerc J, Blais C, Rochette L, Hamel D, Guenette L, Poirier P

Trends in Hospital Visits for Generic and Brand-Name Warfarin Users in Québec, Canada: A Population-Based Time Series Analysis.

Journal Article

Am J Cardiovasc Drugs, 19 (3), pp. 287-297, 2019, ISSN: 1175-3277.

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Blanchard J, Blais S, Chetaille P, Bisson M, Counil FP, Girard TH, Lafrenaye S, Dallaire F

Determination of peak cardiorespiratory fitness parameters in children: which averaging method should we use?

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J Sports Sci, 37 (11), pp. 1265-1269, 2019, ISSN: 0264-0414.

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Shemilt M, Boutin A, Lauzier F, Zarychanski R, Moore L, McIntyre LA, Nadeau L, Fergusson DA, Mercier E, Archambault P, Lamontagne F, Perron C, Leger C, Turgeon AF

Prognostic Value of Glial Fibrillary Acidic Protein in Patients With Moderate and Severe Traumatic Brain Injury: A Systematic Review and Meta-Analysis.

Journal Article

Crit Care Med, 47 (6), pp. e522-e529, 2019, ISSN: 0090-3493.

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