• Fonction des cellules de Leydig et de Sertoli
• Infertilité
• Endocrinologie moléculaire
• Stéroïdogenèse
• Voie des WNTs et Hippo

Les voie de signalisation WNT et Hippo sont impliquées dans la régulation d’un large spectre de processus biologiques incluant le développement embryonnaire, la détermination et la différentiation cellulaire et le maintien de l’homéostasie tissulaire. 

Mon laboratoire s’intéresse, par l’étude de modèles de culture cellulaire et de souris transgéniques, à identifier les rôles joués par ces voies au niveau de l’axe hypothalamo-hypophyso-gonadique.

Poste d’étudiant.e au doctorat

Titre : Élucidation du rôle de la voie Hippo au niveau du testicule

Le laboratoire du Dr Alexandre Boyer est à la recherche d’un.e étudiant.e au doctorat afin de joindre une équipe de recherche ayant comme objectif l’élucidation du rôle de voies de signalisation impliquées dans le développement, la physiologie et la fonction du testicule. Le/la candidat.e choisi.e utilisera des modèles de souris transgéniques et de cultures cellulaires afin d’étudier le rôle de la voie Hippo dans les cellules de Sertoli.

Les projets seront effectués au Centre de Recherche en Reproduction et Fertilité (CRRF) situé à la Faculté de médecine vétérinaire de l’Université de Montréal (campus Saint-Hyacinthe). Une bourse sera offerte à l’étudiant.e par le chercheur si celui-ci/celle-ci n’obtient pas de bourses d’études des organismes subventionnaires.

Si vous êtes intéressé.e, veuillez faire parvenir votre curriculum vitae et relevé de notes à l’attention du Dr. Alexandre Boyer : alexandre.boyer.1@umontreal.ca

Date de commencement : À déterminer avec le candidat  

PhD position

Title: Elucidation of the biological roles of Hippo signaling in the testis

Dr Alexandre Boyer’s laboratory is seeking a PhD candidate to join a research team focusing on elucidating the role of signaling pathways involved in testis development, physiology and functions. The selected candidate will use transgenic mouse and cell culture models to study the role of the Hippo signaling pathway in Sertoli cells.

Projects will be carry out at the Reproduction and fertility research center (CRRF) located at the University of Montreal (Saint-Hyacinthe campus - 60 km from Montreal). Scholarship will be awarded to students by the researcher if he/she does not get scholarship from funding agencies or internal programs.

If you are interested please send your curriculum vitae and academic transcript to Dr. Alexandre Boyer: alexandre.boyer.1@umontreal.ca

Starting date: to be determine with the candidate

Boyer A, Girard M, Thimmanahalli D, Levasseur A, Céleste C, Paquet M, Duggavathi R, Boerboom D. mTOR regulates gap junction alpha-1 protein trafficking in Sertoli cells and is required for the maintenance of spermatogenesis in mice. Biology of reproduction, 2016, Jul;95(1):13.

Savard C, Nogues P, Boyer A, Chorfi Y. Prevention of deoxynivalenol- and zearalenone-associated oxidative stress does not restore MA-10 Leydig cell functions. Toxicology. 2016;341-343:17-27.

Abedini A, Zamberlam G, Lapointe E, Tourigny C, Boyer A, Paquet M, et al. WNT5a is required for normal ovarian follicle development and antagonizes gonadotropin responsiveness in granulosa cells by suppressing canonical WNT signaling. FASEB journal : official publication of the Federation of American Societies for Experimental Biology. 2016;30(4):1534-47. 

Tsoi M, Laguë MN, Boyer A, Paquet M, Nadeau ME, Boerboom D. Anti-VEGFA therapy reduces tumor growth and extends survival in a murine model of ovarian granulosa cell tumor. Transl Oncol. 2013, 6(3):226-33.

Lapointe E, Boyer A, Rico C, Paquet M, Gossen J, DeMayo FJ, Richards JS, Boerboom D. Fzd1 regulates cumulus expansion genes and is required for normal female fertility. Biol Reprod. 2012, 87(5):104.

Boyer A, Yeh JR, Zhang X, Paquet M, Gaudin A, Nagano MC, Boerboom D. Ctnnb1 signaling in Sertoli cells downregulates spermatogonial stem cell activity via WNT4. PLoS one. 2012, 7(1):e29764.

Laguë MN, Romieu-Mourez R, Bonneil E, Boyer A, Pouletty P, Mes-Masson AM, Thibault P, Nadeau ME, Boerboom D. Proteomic profiling of a mouse model for ovarian granulosa cell tumor identifies VCP as a highly sensitive serum tumor marker in several human
cancers. PLoS one. 2012, 7(8):e42470.

Richards JS, Fan HY, Liu Z, Tsoi M, Boyer A, Boerboom D. Either Kras activation or Pten loss similarly enhance the dominant-stable CTNNB1-induced genetic program to promote granulosa cell tumor development in ovary and testis. Oncogene. 2012, 31(12):1504-20.

Boerboom D, Lafond JF, Zheng X, Lapointe E, Mittaz L, Boyer A, Pritchard M, DeMayo F, Mort J, Drolet R, Richards JS. Partially redundant function of Adamts1 and Adamts4 in the perinatal development of the renal medulla. Dev Dyn. 2011, 240(7):1806-14.

Boyer A, Lapointe E, Zheng X, Cowan RG, Li H, Quirk SM, DeMayo FJ, Richards JS, Boerboom D. WNT4 is required for normal ovarian follicle development and female fertility. FASEB, 2010, 24(8):3010-25.

Boyer A, Goff AK, Boerboom D. WNT signaling in ovarian follicle biology and tumorigenesis. Trends Endocrinol Metab. 2010, 21(1):25-32.

Laguë MN, Detmar J, Paquet M, Boyer A, Richards JS, Adamson L, Boerboom D. Decidual PTEN expression is required for trophoblast invasion in the mouse. Am J Physiol Endocrinol Metab,  2010. 299(6):E936-46.

Boyer A, Hermo L, Paquet M, Laguë MN, Boerboom D. Dysregulation of WNT/CTNNB1 and PI3K/AKT signaling in testicular stromal cells causes granulosa cell tumor of the testis. Carcinogenesis, 2009, 30(5): 869-78.

Boyer A, Hermo L, Paquet M, Robaire B, Boerboom D. Sustained activation of Wnt/β-catenin signaling in Sertoli cells causes seminiferous tubule degeneration and germ cell loss. Biology of Reproduction, 2008, 79(3):475-85.

Joubert P, Cordeau ME, Boyer A, Silversides DW, Lavoie JP. Cytokine expression by peripheral blood neutrophils from heaves-affected horses before and after allergen challenge. Vet J. 2008. 178(2):227-32.

Cory AT, Boyer A, Pilon N, Lussier J, Silversides DW. Presumptive pre-Sertoli cells express genes involved in cell proliferation and cell signalling during a critical window in early testis differentiation. Mol Reprod Dev. 2007, 74(12):1491-504.

Boyer A, Pilon N, Raiwet D, Lussier JG, Silversides DW. Human and pig SRY 5’ flanking sequences can direct reporter transgene expression to the genital ridge and to the neural crest cells. Dev Dynamics, 2006, 235(3):623-32.

Boyer A, Lussier JG, Sinclair AH, McClive PJ, Silversides DW. Pre-Sertoli specific gene expression profiling reveals differential expression of Ppt1 and Brd3 genes within the mouse genital ridge at the time of sex determination. Biology of reproduction.  2004, 71(3): 820-7.

Boyer A, Paquet M, Raiwet D, Daneau I, Harrison W, Silversides DW. Rapid genomic identification of transgenic integration sites for mouse insertional mutants. Biotechniques. 2003, 34(1):32-4, 36.

Boyer A, Dornan S, Daneau I, Lussier JG, Silversides DW. Conservation of the function of DMRT1 regulatory sequences in mammalian sex differentiation. Genesis. 2002, 34(4):236-43.

Daneau I, Pilon N, Boyer A, Behdjani R, Overbeek PA, Viger R, Lussier JG, Silversides DW. The porcine SRY promoter is transactivated within a male genital ridge environment. Genesis. 2002, 33(4):170-80.

Silversides DW, Pilon N, Bedhjani R, Boyer A, Daneau I, Lussier JG. Genetic manipulation of sex differentiation and phenotype in domestic animals. Theriogenology. 2001, 55:51-63.