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The Danska lab focuses on functional genomics of type 1 diabetes and mechanisms of lymphoid leukemia
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The Danska lab focuses on functional genomics of type 1 diabetes and mechanisms of lymphoid leukemia
EXPLORE >   Researchers >  Jayne Danska
RESEARCH
BIOGRAPHY
KEY PUBLICATIONS
INTELLECTUAL PROPERTY
Research
Dr. Jayne Danska’s immunogenetics research is aimed at understanding the molecular mechanisms behind human diseases including Type 1 diabetes, leukemia and lymphoma. Some of the current experimental approaches include the establishment of novel in vitro and in vivo models, positional cloning, gene expression microarray analysis, flow cytometry, cytogenomics, confocal microscopy, protein biochemistry, bioinformatics and human gene association studies.

The type 1 diabetes (T1D) research effort is based on the notion that the immunogenetic mechanisms behind T1D in laboratory animals will provide valuable insights into the mechanisms involved in human disease. As such, rodent strains have been established in order to identify candidate genes involved in T1D and to understand how these genes contribute to the dysfunction of pancreatic beta cells in the disease. Human gene association studies on the genes and molecular pathways identified in the rodent T1D models are then carried out on well-characterized populations of T1D families. This research effort has included two large-scale research projects involving collaborations across Canada, in the United States and in Sweden.

For more information see: http://www.diabetesgenetics.ca/principal_investigators/jayne_danska.html

Dr. Danska is also involved in a collaborative research program focused on leukemia and lymphoma. The research is aimed at understanding the developmental mechanisms of leukemo- and lymphomagenesis in mouse models and in humans, including studying the molecular pathways involved in lymphoid cell regulation, differentiation and survival.
Researcher Information
Senior Scientist
Website
14th Floor, Toronto Medical Discovery Tower/MaRS Discovery District
101 College Street
Toronto, Ontario
Canada M5G 1L7
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Biography
Dr. Danska received a PhD in Genetics and Molecular Biology from Cornell University Medical College, 1983. Dr. Danska is a Senior Scientist at the Hospital for Sick Children, Genetics and Genome Biology, and Professor in the Faculty of Medicine, University of Toronto, Departments of Immunology, Medical Biophysics and the Institute of Medical Sciences. Dr. Danska chairs and serves on grant panels including the National Cancer Institute of Canada, Canadian Institutes of Health Research, Canadian Diabetes Association, and the National Institutes of Health (US). She is recipient of a NCIC Scientist Award, and a Premier''s Research Excellence Award.
Researcher Information
Senior Scientist
Website
14th Floor, Toronto Medical Discovery Tower/MaRS Discovery District
101 College Street
Toronto, Ontario
Canada M5G 1L7


Key Publications
Ivakine EA, Fox CJ, Paterson AD, Mortin-Toth SM, Canty A, Walton DS, Aleksa K, Ito S, Danska JS. Sex-specific effect of insulin-dependent diabetes 4 on regulation of diabetes pathogenesis in the nonobese diabetic mouse. J Immunol. 2005, 174(11):7129-40.
Gladdy RA, Taylor MD, Williams CJ, Grandal I, Karaskova J, Squire JA, Rutka JT, Guidos CJ, Danska JS. The RAG-1/2 endonuclease causes genomic instability and controls CNS complications of lymphoblastic leukemia in p53/Prkdc-deficient mice. Cancer Cell, 2003, 3(1):37-50.
Ivakine EA, Gulban OM, Mortin-Toth SM, Wankiewicz E, Scott C, Spurrell D, Canty A, Danska JS. Molecular genetic analysis of the Idd4 locus implicates the IFN response in type 1 diabetes susceptibility in non-obese diabetic mice. J Immunol. 2006, 176(5):2976-90.
Matei I.R., Gladdy R.A., Nutter L.M., Canty A., Guidos C.J., Danska, J.S. ATM deficiency disrupts TCRa locus integrity and the maturation of CD4+CD8+ thymocytes. Blood. 2007, 109(5):1887-96.
Takenaka K., Prasalova, TK., Wang, J.C., Mortin-Toth, S.M., Khalouei S, Gan, O.I., Dick, J.E. & Danska J.S. Polymorphism in Sirpa modulates engraftment of human hematopoeitic stem cells, Nature Immunology. 2007, 8(12):1313-23.
Researcher Information
Senior Scientist
Website
14th Floor, Toronto Medical Discovery Tower/MaRS Discovery District
101 College Street
Toronto, Ontario
Canada M5G 1L7


Intellectual Property
Leukemia and Hematopoietic Stem Cell Signatures for Predicting Survival of Patients Having Acute Myeloid Leukemia
Normal hematopoiesis and acute myeloid leukemia (AML) are organized as hierarchies with stem cells, which possess extensive self-renewal and proliferative capacity, at the apex. Although there is definitive evidence from experimental models for the existence of leukemic stem cells (LSC) in some human leukemias, the relevance of LSC to human disease progression is still lacking. While chemotherapeutic treatment of AML patients typically results in disease remission, the majority of patients will eventually relapse and succumb to the disease, indicating that residual LSC are not eliminated by current treatment.

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Normal hematopoiesis and acute myeloid leukemia (AML) are organized as hierarchies with stem cells, which possess extensive self-renewal and proliferative capacity, at the apex. Although there is definitive evidence from experimental models for the existence of leukemic stem cells (LSC) in some human leukemias, the relevance of LSC to human disease progression is still lacking. While chemotherapeutic treatment of AML patients typically results in disease remission, the majority of patients will eventually relapse and succumb to the disease, indicating that residual LSC are not eliminated by current treatment. The researchers have identified clinically significant novel leukemia and hematopoietic stem cell signature expression profiles derived from 25 functionally validated human leukemia stem cell populations and 6 normal hematopoietic stem cell populations. Figure: Expression of stem cell-related signatures predicts overall survival. The median expression of a) the 25 probe LSC signature or b) the 225 probe HSC signature was determined in 160 cytogenetically normal AML samples and used to stratify the patients into two groups of 80. All the patients had been treated with intensive doubleinduction therapy and consolidation chemotherapy. Expression was scaled to 0 for each probe. A Kaplan-Meier plot was generated and statistical significance determined by log-rank test.

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Researcher Information
Senior Scientist
Website
14th Floor, Toronto Medical Discovery Tower/MaRS Discovery District
101 College Street
Toronto, Ontario
Canada M5G 1L7
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CATEGORIES
Application Area
Human health
Disciplinary Focus
Experimental biology and chemistry
Research Paradigm
Focused-scope projects, Large-scale projects
Core Technology
Nucleic acids: DNA sequencing, Gene expression systems, Genotyping, Microarrays
Organism
Human, Rodent, Rodent
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