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Dixie 

About

Dr. Dixie L. Mager, PhD
Senior Scientist

Research Interest

  • Gene regulation and epigenetics
  • Transposable elements
  •  Bioinformatics

Our laboratory uses molecular and cellular biology approaches, coupled with bioinformatics, to address questions in gene regulation, genomic stability and malignancy. Two broad areas are currently under investigation:

1. Nearly half of the human genome is composed of sequences related to transposable elements (TEs). These elements, which include endogenous retroviruses (ERVs), have bombarded our genome during evolution and some are still mobile - causing cancer in mice and genetic disease in humans and animals.  The epigenetic state of TEs is often altered in cancer, a reflection of global epigenetic abnormalities associated with malignancy.  A primary interest of our laboratory is to determine how TEs influence gene regulation and the epigenetic and genetic stability in normal and cancer cells. Ongoing or future projects include: i) Characterizing genes that use TE-derived regulatory signals; ii) Elucidating the complex relationship between epigenetic silencing of TEs and the resultant effects on gene expression; iii) Using patterns of genomic TE distributions to uncover novel aspects of gene regulation; and iv) Developing approaches to determine the potential pathogenic role of epigenetic dysregulation of ERVs and other TEs in cancer.  In related work, we are also exploiting unique properties of ERVs to develop customized vectors for stem cell reprogramming.

2. Our other area of interest focuses on understanding the regulation of immune system genes.  Natural killer cells, part of the innate immune system, destroy virally-infected and tumor cells and are used as adjunctive therapy for acute leukemia.  NK cells generate functional diversity by displaying variable patterns of inhibitory and activating receptors. We are currently investigating the role of epigenetic modifications and transcription factors in regulating expression of NK receptor genes and their ligands, and how this regulation may be altered in cancer.   We are also investigating the role of epigenetics in differentiation of specialized T lymphocyte subsets.

Publications

Selected Publications

 2010

Reiss D, Zhang Y, Rouhi A, Reuter M & Mager DL. Variable DNA methylation of transposable elements: the case study of mouse early transposons.  Epigenetics 5: 1-12, 2010. View Abstract

 

Rogers SL, Zhao Y, Jiang X, Eaves CJ, Mager DL & Rouhi A. Expression of the leukemic prognostic marker CD7 is linked to epigenetic modifications in chronic myeloid leukemia.  Mol Cancer 9:41 2010. View Abstract

 

Romanish MT, Cohen CJ & Mager DL. Potential mechanisms of endogenous retroviral-mediated genomic instability in human cancer.  Semin Cancer Biol Epub ahead of print. View Abstract

 

 

 

 2009

Rouhi A, Lai CB, Cheng TP, Takei F, Yokoyama WM & Mager DL. Evidence for high bi-allelic expression of activating Ly49 receptors.  Nucleic Acids Res  37: 5331-5342, 2009. View Abstract

 

Cohen C, Lock W & Mager DL. Endogenous retroviral LTRs as promoters for human genes: a critical assessment.  Gene  448: 105-114, 2009. View Abstract

 

Hotta A, Cheung AYL, Farra N, Vijayaragavan K, Seguin CA, Draper JS, Pasceri P, Maksakova IA, Mager DL, Rossant J, Bhatia M & Ellis J. Isolation of human iPS cells using EOS lentiviral vectors to select for pluripotency.  Nat Methods 6: 370-376, 2009. View Abstract

 

Romanish MT, Nakamura H, Lai CB, Wang Y & Mager DL. A novel protein isoform of the multicopy human NAIP gene derives from intragenic Alu SINE promoters.  PLoS One 4: e5761, 2009.  View Abstract

 

Lai CB, Zhang Y, Rogers SL & Mager DL. Creation of the two isoforms of rodent NKG2D was driven by a B1 retrotransposon insertion.  Nucleic Acids Res  37: 3032-3043, 2009. View Abstract

 

Maksakova IA, Zhang Y, van de Lagemaat LN & Mager DL. Preferential epigenetic suppression of the autonomous MusD over the non-autonomous ETn mouse retrotransposons.  Mol Cell Biol 29: 2456-2468, 2009.  View Abstract

 

2008

Dong KB, Maksakova IA, Mohn F, Leung D, Appanah R, Lee S, Yang HW, Lam LL, Mager DL, Schubeler D, Tachibana M, Shinkai Y & Lorincz MC. DNA methylation in ES cells requires the lysine methyltransferase G9a but not its catalytic activity.  EMBO J 27: 2691-2701, 2008. View Abstract


 Maksakova IA, Mager DL & Reiss D. Keeping active endogenous retroviral elements in check: the epigenetic perspective.  Cell Mol Life Sci 65 (Suppl. Endogenous Retroviruses): 3329-3347, 2008. View Abstract

 

Rouhi A, Mager DL, Humphries RK & Kuchenbauer F. MiRNAs, epigenetics and cancer.  Mamm Genome  19: 517-525, 2008.  View Abstract

 

Zhang Y, Maksakova IA, Gagnier L, van de Lagemaat LN & Mager DL. Genome-wide assessments reveal extremely high levels of polymorphism of two active families of mouse endogenous retroviral elements.  PLoS Genet 4:e1000007, 2008. View Abstract

 

2007

Reiss D, Zhang Y, & Mager DL. Widely variable endogenous retroviral methylation levels in human placenta. Nucleic Acids Res 35 (14): 4743-54, 2007. View Abstract

 

Wilson EB, Parachoniak CA, Carpenito C, Mager DL, & Takei F. Expression of murine killer immunoglobulin-like receptor KIRL1 on CD1d-independent NK1.1(+) T cells. Immunogenetics 59 (8): 641-51, 2007. View Abstract

 

Romanish MT, Lock WM, van de Lagemaat LN, Dunn CA, & Mager DL. Repeated recruitment of LTR retrotransposons as promoters by the anti-apoptotic locus NAIP during mammalian evolution. PLoS Genet 3 (1): e10, 2007. View Abstract

 

Reiss D, & Mager DL. Stochastic epigenetic silencing of retrotransposons: does stability come with age? Gene 390 (1-2): 130-5, 2007. View Abstract

 

Rouhi A, Brooks CG, Takei F, & Mager DL. Plasticity of Ly49g expression is due to epigenetics. Mol Immunol 44 (5): 821-6, 2007. View Abstract

 

2006

van de Lagemaat LN, Medstrand P, & Mager DL. Multiple effects govern endogenous retrovirus survival patterns in human gene introns. Genome Biol 7 (9): R86, 2006. View Abstract

 

Gerlo S, Davis JR, Mager DL, & Kooijman R. Prolactin in man: a tale of two promoters. Bioessays 28 (10): 1051-5, 2006. View Abstract

 

Rogers SL, Rouhi A, Takei F, & Mager DL. A role for DNA hypomethylation and histone acetylation in maintaining allele-specific expression of mouse NKG2A in developing and mature NK cells. J Immunol 177 (1): 414-21, 2006. View Abstract

 

Rouhi A, Gagnier L, Takei F, & Mager DL. Evidence for epigenetic maintenance of Ly49a monoallelic gene expression. J Immunol 176 (5): 2991-9, 2006. View Abstract

 

Maksakova IA, Romanish MT, Gagnier L, Dunn CA, van de Lagemaat LN, & Mager DL. Retroviral elements and their hosts: insertional mutagenesis in the mouse germ line. PLoS Genet 2 (1): e2, 2006. View Abstract

 

Dunn CA, Romanish MT, Gutierrez LE, van de Lagemaat LN, & Mager DL. Transcription of two human genes from a bidirectional endogenous retrovirus promoter. Gene 366 (2): 335-42, 2006. View Abstract

 

2005

Maksakova IA, & Mager DL. Transcriptional regulation of early transposon elements, an active family of mouse long terminal repeat retrotransposons. J Virol 79 (22): 13865-74, 2005. View Abstract

 

van de Lagemaat LN, Gagnier L, Medstrand P, & Mager DL. Genomic deletions and precise removal of transposable elements mediated by short identical DNA segments in primates. Genome Res 15 (9): 1243-9, 2005. View Abstract

 

Dunn CA, van de Lagemaat LN, Baillie GJ, & Mager DL. Endogenous retrovirus long terminal repeats as ready-to-use mobile promoters: the case of primate beta3GAL-T5. Gene 364: 2-12, 2005. View Abstract

 

Medstrand P, van de Lagemaat LN, Dunn CA, Landry JR, Svenback D, & Mager DL. Impact of transposable elements on the evolution of mammalian gene regulation. Cytogenet Genome Res 110 (1-4): 342-52, 2005. View Abstract

 

Dunn CA, & Mager DL. Transcription of the human and rodent SPAM1 / PH-20 genes initiates within an ancient endogenous retrovirus. BMC Genomics 6 (1): 47, 2005. View Abstract

 

2004

Wilhelm BT, & Mager DL. Rapid expansion of the Ly49 gene cluster in rat. Genomics 84 (1): 218-21, 2004. View Abstract

 

Baillie GJ, van de Lagemaat LN, Baust C, & Mager DL. Multiple groups of endogenous betaretroviruses in mice, rats, and other mammals. J Virol 78 (11): 5784-98, 2004. View Abstract

 

2003

Mager DL & Medstrand P. Retroviral repeat sequences. In:  Nature Encyclopedia of the Human Genome., Vol. 5, Nature Publishing Group, pp 57-63, 2003.

 

Landry JR, Mager DL, & Wilhelm BT. Complex controls: the role of alternative promoters in mammalian genomes. Trends Genet 19 (11): 640-8, 2003. View Abstract

 

Baust C, Gagnier L, Baillie GJ, Harris MJ, Juriloff DM, & Mager DL. Structure and expression of mobile ETnII retroelements and their coding-competent MusD relatives in the mouse. J Virol 77 (21): 11448-58, 2003. View Abstract

 

van de Lagemaat LN, Landry JR, Mager DL, & Medstrand P. Transposable elements in mammals promote regulatory variation and diversification of genes with specialized functions. Trends Genet 19 (10): 530-6, 2003. View Abstract

 

Dunn CA, Medstrand P, & Mager DL. An endogenous retroviral long terminal repeat is the dominant promoter for human beta1,3-galactosyltransferase 5 in the colon. Proc Natl Acad Sci U S A 100 (22): 12841-6, 2003. View Abstract

 

Wilhelm BT, Landry JR, Takei F, & Mager DL. Transcriptional control of murine CD94 gene: differential usage of dual promoters by lymphoid cell types. J Immunol 171 (8): 4219-26, 2003. View Abstract

 

Landry JR, & Mager DL. Functional analysis of the endogenous retroviral promoter of the human endothelin B receptor gene. J Virol 77 (13): 7459-66, 2003. View Abstract

 

Wilhelm BT, & Mager DL. Identification of a new murine lectin-like gene in close proximity to CD94. Immunogenetics 55 (1): 53-6, 2003. View Abstract

 

Gagnier L, Wilhelm BT, & Mager DL. Ly49 genes in non-rodent mammals. Immunogenetics 55 (2): 109-15, 2003. View Abstract

 

Wilhelm BT, Gagnier L, & Mager DL. Sequence analysis of the ly49 cluster in C57BL/6 mice: a rapidly evolving multigene family in the immune system. Genomics 80 (6): 646-61, 2002. View Abstract

 

2002

Landry JR, Rouhi A, Medstrand P, & Mager DL. The Opitz syndrome gene Mid1 is transcribed from a human endogenous retroviral promoter. Mol Biol Evol 19 (11): 1934-42, 2002. View Abstract

 

Landry JR, & Mager DL. Widely spaced alternative promoters, conserved between human and rodent, control expression of the Opitz syndrome gene MID1. Genomics 80 (5): 499-508, 2002. View Abstract

 

Medstrand P, van de Lagemaat LN, & Mager DL. Retroelement distributions in the human genome: variations associated with age and proximity to genes. Genome Res 12 (10): 1483-95, 2002. View Abstract

 

Baust C, Baillie GJ, & Mager DL. Insertional polymorphisms of ETn retrotransposons include a disruption of the wiz gene in C57BL/6 mice. Mamm Genome 13 (8): 423-8, 2002. View Abstract

 

McQueen KL, Wilhelm BT, Harden KD, & Mager DL. Evolution of NK receptors: a single Ly49 and multiple KIR genes in the cow. Eur J Immunol 32 (3): 810-7, 2002. View Abstract

 

2001

Landry JR, Medstrand P, & Mager DL. Repetitive elements in the 5’ untranslated region of a human zinc-finger gene modulate transcription and translation efficiency. Genomics 76 (1-3): 110-6, 2001. View Abstract

 

Takei F, McQueen KL, Maeda M, Wilhelm BT, Lohwasser S, Lian RH, & Mager DL. Ly49 and CD94/NKG2: developmentally regulated expression and evolution. Immunol Rev 181: 90-103, 2001. View Abstract

 

Wilhelm BT, McQueen KL, Freeman JD, Takei F, & Mager DL. Comparative analysis of the promoter regions and transcriptional start sites of mouse Ly49 genes. Immunogenetics 53 (3): 215-24, 2001. View Abstract

 

Mager DL, McQueen KL, Wee V, & Freeman JD. Evolution of natural killer cell receptors: coexistence of functional Ly49 and KIR genes in baboons. Curr Biol 11 (8): 626-30, 2001. View Abstract

 

McQueen KL, Wilhelm BT, Takei F, & Mager DL. Functional analysis of 5’ and 3’ regions of the closely related Ly49c and j genes. Immunogenetics 52 (3-4): 212-23, 2001. View Abstract

 

Medstrand P, Landry JR, & Mager DL. Long terminal repeats are used as alternative promoters for the endothelin B receptor and apolipoprotein C-I genes in humans. J Biol Chem 276 (3): 1896-903, 2001. View Abstract

 

2000

Mager DL, & Freeman JD. Novel mouse type D endogenous proviruses and ETn elements share long terminal repeat and internal sequences. J Virol 74 (16): 7221-9, 2000. View Abstract

 

1999

Mager DL, Hunter DG, Schertzer M, & Freeman JD. Endogenous retroviruses provide the primary polyadenylation signal for two new human genes (HHLA2 and HHLA3). Genomics 59 (3): 255-63, 1999. View Abstract

 

McQueen KL, Lohwasser S, Takei F, & Mager DL. Expression analysis of new Ly49 genes: most transcripts of Ly49j lack the transmembrane domain. Immunogenetics 49 (7-8): 685-91, 1999. View Abstract

 

Kowalski PE, Freeman JD, & Mager DL. Intergenic splicing between a HERV-H endogenous retrovirus and two adjacent human genes. Genomics 57 (3): 371-9, 1999. View Abstract

 

1998

Medstrand P, & Mager DL. Human-specific integrations of the HERV-K endogenous retrovirus family. J Virol 72 (12): 9782-7, 1998. View Abstract

 

McQueen KL, Freeman JD, Takei F, & Mager DL. Localization of five new Ly49 genes, including three closely related to Ly49c. Immunogenetics 48 (3): 174-83, 1998. View Abstract

 

Kowalski PE, & Mager DL. A human endogenous retrovirus suppresses translation of an associated fusion transcript, PLA2L. J Virol 72 (7): 6164-8, 1998. View Abstract

 

1997

Takei F, Brennan J, & Mager DL. The Ly-49 family: genes, proteins and recognition of class I MHC. Immunol Rev 155: 67-77, 1997. View Abstract

 

1996

Brennan J, Lemieux S, Freeman JD, Mager DL, & Takei F. Heterogeneity among Ly-49C natural killer (NK) cells: characterization of highly related receptors with differing functions and expression patterns. J Exp Med 184 (6): 2085-90, 1996. View Abstract

 

 

 

 

Lab People


Postdoctoral Fellow

Dr. Carla Cohen
Dr. Mark Romanish
Dr. Rita Rebollo

 

 

 

 

 

Graduate Students

Benjamin Lai
Ying Zhang
Katharine Miceli

 



Other members

Liane Gagnier

 


Open Positions

None available at this time.

Mailing Address:

   

Terry Fox Laboratory
BC Cancer Agency
675 West 10th Avenue
Vancouver BC
Canada V5Z 1L3

Email:
dmager@bccrc.ca
Phone Number:
(T)  604-675-8139
(F)  604-877-0712






© 2007. BC Cancer Agency. All rights reserved.
www.terryfoxlab.ca  =  tfl.bccrc.ca