ZFIN ID: ZDB-PUB-080915-8
Chapter 6 teleost lens development and degeneration
Vihtelic, T.S.
Date: 2008
Source: International review of cell and molecular biology   269: 341-373 (Chapter)
Registered Authors: Vihtelic, Thomas
Keywords: none
MeSH Terms:
  • Animals
  • Cell Differentiation/physiology
  • Ectoderm/cytology
  • Ectoderm/metabolism
  • Eye Proteins/biosynthesis*
  • Eye Proteins/genetics
  • Forkhead Transcription Factors/biosynthesis*
  • Forkhead Transcription Factors/genetics
  • Gene Expression Regulation, Developmental/physiology*
  • Homeodomain Proteins/biosynthesis*
  • Homeodomain Proteins/genetics
  • Lens, Crystalline/cytology
  • Lens, Crystalline/embryology*
  • Mutation
  • Zebrafish/embryology*
  • Zebrafish/genetics
  • Zebrafish Proteins/biosynthesis*
  • Zebrafish Proteins/genetics
PubMed: 18779061 Full text @ Int. Rev. Cell Mol. Biol.
The transparent properties of the lens and its ability to focus light onto the retina are critical for normal vision. Optical clarity of the lens is achieved and maintained by a unique, highly regulated integration of lens cell proliferation and differentiation that persists throughout life. Zebrafish is a powerful genetic model for studying vertebrate lens differentiation and growth because the structural organization of the lens and gene functions are largely conserved with mammals, including humans. However, some features of zebrafish lens developmental morphology and gene expression are different from those of mammals and other terrestrial vertebrates. For example, the presumptive zebrafish lens delaminates from the surface ectoderm to form a solid mass of cells, in which the primary fibers differentiate by elongating in circular fashion. Both mutational and candidate gene analyses have identified and characterized developmental gene functions of the lens in zebrafish. This chapter presents the recent morphological analysis of zebrafish lens formation. In addition, the roles of Pitx3, Foxe3, and the lens-specific protein Lengsin (LENS Glutamine SYNthetase-like) in lens development are analyzed. Selected zebrafish lens mutants defective in early developmental processes and the maintenance of lens transparency are also discussed.