Texas A&M University         

              B.S. Microbiology, 1993


              UT Southwestern Medical Center at  Dallas          

              Ph.D. Genetics & Development, 2000





               Postdoctoral Fellow

               UT Southwestern Medical Center at Dallas


               Adjunct Professor, Biology

               Texas Woman’s University


               Professor of Biology

               Collin County Community College, Preston

               Ridge Campus 






          Imondi, R, Jevince, AR, Helms, AW, Johnson, JE, Kaprielian, Z. Mis-expression of L1 on pre-crossing spinal commissural

            axons disrupts  pathfinding at the ventral midline. 2007 Molecular and Cellular Neuroscience 36(4): 462-7


            Battiste, J, Helms, AW, Kim, EJ, Savage, TK, Lagace, DC, Mandyam, CD, Eisch, AJ, Miyoshi, G, and Johnson, JE.  Ascl1  defines

            sequentially generated lineage-restricted neuronal and oligodendrocyte precursor cells in the spinal cord.  2007. Development



            Helms, AW, Battiste, J, Henke, RM, Nakada, Y, Simplicio, N, Guillemot, F, and Johnson, JE.  Sequential roles for Mash1 and Ngn2 in

            the generation of dorsal spinal cord interneurons. 2005. Development 132(12): 2709-19.


             Liu, Y, Helms, AW, and Johnson, JE. Distinct activities of Msx1 and Msx3 in dorsal neural tube development. 2004.

             Development  131 (5): 1017-28.


             Ebert, PJ, Timmer, JR, Nakada, Y, Helms, AW, Parab, PB, Liu, Y, Hunsaker, TL, and Johnson, JE. Zic1 represses Math1 expression

             via interactions with the Math1 enhancer and modulation of Math1 autoregulation. 2003. Development 130(9): 1949-59


             Helms, AW and Johnson, JE. Specification of dorsal spinal cord interneurons. 2003. Curr. Opin. Neurobiol. 13(1) 42-9


             Gowan, K, Helms, AW, Hunsaker, TL, Collisson, T, Ebert, PJ, Odom, R, and Johnson, JE. Crossinhibitory activities of Ngn1 and

             Math1  allow specification of distinct dorsal interneurons. 2001. Neuron 31(2): 219-32


             Helms, AW, Gowan, K, Abney, A, Savage, T and Johnson, JE. Overexpression of Math1 disrupts the coordination of neural

             differentiation in cerebellum development. 2001. Mol. Cell Neurosci. 17(4) 671-82


             Helms, AW, Abney, AL, Ben-Arie, N, Zoghbi, HY, and Johnson, JE. Autoregulation and multiple enhancers control Math1    

             expression in the developing nervous system. 2000. Development 127(6): 1185-96


             Helms, AW and Johnson, JE. Progenitors of dorsal commissural interneurons are defined by Math1 expression. 1998. Development

             125(5): 919-28


              Kim, P, Helms, AW, Johnson, JE, and Zimmerman, K. Xath1, a vertebrate homolog of  Drosophila atonal, induces a neuronal

              differentiation within ectodermal progenitors. 1997. Developmental Biology 187(1):1-12