May 2008
Volume 49, Issue 13
Free
ARVO Annual Meeting Abstract  |   May 2008
Semaphorin3A Regulates Neural Crest Migration Into the Eye During Cornea Development
Author Affiliations & Notes
  • P. Y. Lwigale
    Biology, California Inst Tech, Pasadena, California
  • M. Bronner-Fraser
    Biology, California Inst Tech, Pasadena, California
  • Footnotes
    Commercial Relationships  P.Y. Lwigale, None; M. Bronner-Fraser, None.
  • Footnotes
    Support  NIH Grant K99EY018050 to PYL and NIH Grants to MBF
Investigative Ophthalmology & Visual Science May 2008, Vol.49, 4809. doi:https://doi.org/
  • Views
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      P. Y. Lwigale, M. Bronner-Fraser; Semaphorin3A Regulates Neural Crest Migration Into the Eye During Cornea Development. Invest. Ophthalmol. Vis. Sci. 2008;49(13):4809. doi: https://doi.org/.

      Download citation file:


      © ARVO (1962-2015); The Authors (2016-present)

      ×
  • Supplements
Abstract

Purpose: : To determine the role of lens-derived Semaphorin3A during neural crest migration into the eye.

Methods: : Using in situ hybridization, we characterized the expression of Semaphorin3A (Sema3A) in the eye and its receptor Neuropilin-1 (Npn-1) by neural crest cells in the periocular region during cornea development in chick embryos. Migration of neural crest cells into the eye was tracked after lens ablation or inhibition of Sema3A in the lens using quail-chick chimera technique and immunohistochemistry.

Results: : We show that the lens continuously expresses Sema3A during cornea development and neural crest cells express Npn-1 in the periocular region. Interestingly, only the neural crest cells that down regulate Npn-1 migrate into the eye to form the cornea. We also show that the lens, which immediately underlies the ectoderm, inhibits neural crest migration into the rudimentary eye since lensectomy results in premature migration and malformation of the cornea. Additionally, inhibiting of Sema3A signaling in the lens phenocopies lensectomy.

Conclusions: : Our results demonstrate that lens-derived Sema3A regulates periocular neural crest migration into the eye and is necessary for the proper formation of the cornea.

Keywords: cornea: basic science • development • gene/expression 
×
×

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.

×