Vision and Retina





  Michael A. Dyer, Ph.D.

MICHAEL A. DYER, Ph.D.

Associate Member
Department of Developmental Neurobiology
St. Jude Children's Research Hospital
Affiliated Assistant Professor
Department of Anatomy and Neurobiology
The University of Tennessee College of Medicine

Address

St. Jude Children's Research Hospital
DTRC Room D2025C
332 N. Lauderdale
Memphis, TN 38105
Tel: (901) 495-2257; Fax: (901) 495-3143;

Education

Ph.D. Institution: Harvard University, Cambridge, Massachusetts

Research Interests

My laboratory studies the regulation of growth during neural development and disease. Cell division must be carefully regulated during brain development to ensure that the resulting tissue is the appropriate size and contains the correct proportion of each specialized cell type. If the precise balance of cell types were altered in the brain, then the different neurons and glia would not be able to work together to process information. Many of the genes that control growth during development are also involved in regulating cell division following brain injury or in certain degenerative processes. In addition, these genes are often mutated in cancer cells. Therefore, by studying the regulation of growth during development, we can learn about the cause and progression of a variety of diseases in the central nervous system. This may ultimately lead to the design of better treatments for neural injury, degeneration and cancer. 

The retina is a specialized region of the central nervous system that receives and processes visual information. Like the rest of the central nervous system, injury, degeneration and cancer involve changes in the growth properties of retinal cells. We use a wide range of experimental approaches to study how cell division is controlled during retinal development and disease. Methods currently being used in the lab include genetically engineered mice, replication incompetent retroviral vectors suitable for in vivo studies, explant culture systems, microarray hybridization, and to extended our observations to human retinopathies we use normal and diseased human tissue and monkey samples. Experimental approaches that are under development include retinal physiology (ERG), electron microscopy, cell sorting, in vivo mouse models of retinoblastoma, and computational modeling of proliferation during development.

Links

St Jude Faculty - Michael A. Dyer

Recent Publications

  • Rodriguez-Galindo C, Wilson MW, Chantada G, Fu L, Qaddoumi I, Antoneli C, Leal-Leal C, Sharma T, Barnoya M, Epelman S, Pizzarello L, Kane JR, Barfield R, Merchant TE, Robison LL, Murphree AL, Chevez-Barrios P, Dyer MA, O'Brien J, Ribeiro RC, Hungerford J, Helveston EM, Haik BG, Wilimas J. Retinoblastoma: one world, one vision. Pediatrics. 2008 Sep;122(3):e763-70. Review. PMID: 18762512
  • Dyer MA, Freudenreich O, Culhane MA, Pachas GN, Deckersbach T, Murphy E, Goff DC, Evins AE. High-dose galantamine augmentation inferior to placebo on attention, inhibitory control and working memory performance in nonsmokers with schizophrenia. Schizophr Res. 2008 Jul;102(1-3):88-95. Epub 2008 Mar 5. PMID: 18325740
  • Ajioka I, Dyer MA. A new model of tumor susceptibility following tumor suppressor gene inactivation. Cell Cycle. 2008 Mar 15;7(6):735-40. Epub 2008 Jan 11. Review. PMID: 18239449
  • Martins RA, Zindy F, Donovan S, Zhang J, Pounds S, Wey A, Knoepfler PS, Eisenman RN, Roussel MF, Dyer MA. N-myc coordinates retinal growth with eye size during mouse development. Genes Dev. 2008 Jan 15;22(2):179-93. PMID: 18198336
  • Laurie NA, Shih CS, Dyer MA. Targeting MDM2 and MDMX in retinoblastoma. Curr Cancer Drug Targets. 2007 Nov;7(7):689-95. Review. Erratum in: Curr Cancer Drug Targets. 2008 Jun;8(4):341. Schin-Shih, Chie [corrected to Shih, Chie-Schin]. PMID: 18045074
  • Ajioka I, Martins RA, Bayazitov IT, Donovan S, Johnson DA, Frase S, Cicero SA, Boyd K, Zakharenko SS, Dyer MA. Differentiated horizontal interneurons clonally expand to form metastatic retinoblastoma in mice. Cell. 2007 Oct 19;131(2):378-90. PMID: 17956737
view complete list of references (pubmed link)