{"id":14981,"date":"2016-11-11T15:16:47","date_gmt":"2016-11-11T20:16:47","guid":{"rendered":"http:\/\/biochimie.umontreal.ca\/en\/?page_id=14981"},"modified":"2016-11-11T15:16:47","modified_gmt":"2016-11-11T20:16:47","slug":"zoha-kibar","status":"publish","type":"page","link":"https:\/\/biochimie.umontreal.ca\/en\/department\/directories\/accredited-professors\/zoha-kibar\/","title":{"rendered":"Zoha Kibar"},"content":{"rendered":"

Accredited Professor<\/h2>\n\n\n\n
\"\"<\/td>\n\n

Contact Information<\/h2>\n

Centre de recherche
\nCHU Sainte-Justine
\n3175, chemin de la C\u00f4te Sainte-Catherine, Bureau 5999C
\nMontr\u00e9al (Qu\u00e9bec)
\nH3T 1C5<\/td>\n

\n

.<\/span><\/h2>\n

P<\/b> 514 345 4931, poste 3984
\nF<\/strong> 514 <\/strong>345-4801
\nzoha.kibar@recherche-ste-justine.qc.ca<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Themes<\/h2>\n
    \n
  • Molecular genetic studies of congenital malformations of the central nervous system and the associated axial skeletal structures<\/li>\n<\/ul>\n

    We use the tools of genetics, genomics and molecular biology to identify and characterize the genes predisposing to congenital malformations of the central nervous system (CNS) and the associated axial skeletal structures. Our laboratory is particularly interested in understanding the genetic and biological basis of two such malformations: neural tube defects (NTDs) and Chiari I malformation (CMI). These anomalies have a multifactorial etiology involving genetic and environmental factors that remain largely unknown.<\/p>\n

    Neural tube defects (NTDs), including spina bifida and anencephaly, represent a group of very common congenital malformations in humans, affecting 1-2 infants per 1000 births.\u00a0They are caused by a partial or complete failure of the neural tube to close during embryogenesis. During my postdoctoral studies, I identified the gene mutated in Loop-tail, a well-established model for the study of NTDs in humans.\u00a0This gene, designated as Vangl2, forms part of the non-canonical Frizzled (Fz)\/Dishevelled (Dvl) membrane signaling pathway controlling the morphogenetic process of convergent extension (CE) that is central to gastrulation and neural tube closure. We recently identified mutations in a human homolog called VANGL1 that are associated with neural tube defects in humans, representing the first report of pathogenic mutations in a specific gene in human NTDs.\u00a0For identification of novel genes involved in NTDs, we are pursuing three major approaches: (1) molecular genetic investigation of VANGL1, VANGL2 and other members of the non-canonical Fz\/Dvl pathway in human NTDs, (2) molecular genetic studies of other novel chemically-induced mouse models and (3) whole-genome analysis of copy number variants using the array Comparative Genomic Hybridization technology.<\/p>\n

    Chiari I malformation (CMI) is a common abnormality of the craniocerebral junction characterized by a caudal descent of the cerebellar tonsils into the spinal canal.\u00a0CMI in humans is similar to a common condition in the Cavalier King Charles Spaniels (CKCS) and Brussels Griffon dog breeds. We will identify the gene(s) defective in CMI in the dog using linkage and association studies followed by a positional candidate gene approach. We will next investigate the human ortholog(s) of the dog CMI gene(s) to identify and characterize the gene(s) defective in CMI in humans.<\/p>\n

    Our studies of NTDs and CMI will help better understand the underlying pathological mechanisms and are crucial for studying and characterizing the gene-environment interactions in these diseases. Gene-environment studies will help design novel preventive strategies and better counseling for couples at risk.\u00a0 Furthermore, these studies will help elucidate some of the molecular and cellular mechanisms underlying the early development of the neural tube and its derivatives.<\/p>\n\n

    Publications<\/h2>\n
      \n
    • Z. Kibar, V. Capra and P. Gros (2007). Toward understanding the genetic basis of neural tube defects. Clin. Genet., 71, 295-310.<\/li>\n
    • Z. Kibar, E. Torban, J. R. McDearmid, A. Reynolds, J. Berghout, M. Mathieu, I. Kirillova, P. De Marco, E. Merello, J. M. Hayes, J. B. Wallingford, P. Drapeau, V. Capra, and P. Gros (2007). Mutations in VANGL1 associated with neural tube defects in humans. N. Engl J Med., 356, 1432-1437.<\/li>\n
    • Z. Kibar, S. Gauthier, S-H. Lee, S. Vidal and P. Gros (2003). Rescue of the neural tube defect of Loop-tail mice by a BAC clone containing the Ltap gene. Genomics, 82, 397-400.<\/li>\n
    • Z. Kibar, K. J. Vogan, N. Groulx, M. J. Justice, D. A. Underhill and P. Gros (2001). Ltap, a mammalian homolog of Drosophila Strabismus\/Van Gogh, is altered in the mouse neural tube mutant Loop-tail. Nature Genet., 28, 251-255.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

      Accredited Professor Contact Information Centre de recherche CHU Sainte-Justine 3175, chemin de la C\u00f4te Sainte-Catherine, Bureau 5999C Montr\u00e9al (Qu\u00e9bec) H3T 1C5 . P 514 345 4931, poste 3984 F 514 […]<\/p>\n","protected":false},"author":25,"featured_media":0,"parent":14887,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-14981","page","type-page","status-publish","hentry"],"yoast_head":"\nZoha Kibar - D\u00e9partement de biochimie et m\u00e9decine mol\u00e9culaire<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/biochimie.umontreal.ca\/en\/department\/directories\/accredited-professors\/zoha-kibar\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Zoha Kibar - D\u00e9partement de biochimie et m\u00e9decine mol\u00e9culaire\" \/>\n<meta property=\"og:description\" content=\"Accredited Professor Contact Information Centre de recherche CHU Sainte-Justine 3175, chemin de la C\u00f4te Sainte-Catherine, Bureau 5999C Montr\u00e9al (Qu\u00e9bec) H3T 1C5 . 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