The long-term objective of this research is to determine how coordinated and differential cell adhesion regulates the development of the zebrafish visual system, with special emphasis on the role of cadherin cell adhesion molecules in the development of retinal ganglion cells. Cadherins are important cell adhesion molecules that have been implicated in the development of a variety of tissues and organs including the nervous system. Both in vitro and in vivo studies using a variety of vertebrate species have shown that cadherins are involved in retinal axon fasciculation, axonal outgrowth and pathfinding. However, most of the studies to date have focused on cadherin-2 (N-cadherin), and there is relatively little information on the roles, and in particular the in vivo functions, of other cadherins, in these processes. Moreover, little is known about relative roles of different cadherins in the development of retinal ganglion cells. We have studied expression patterns of both cadherin-2 and cadherin-4 (R-cadherin) in the visual system of developing zebrafish. I propose to study cadherin-2 and cadherin-4 function in zebrafish retinal ganglion cell development. This proposal has two specific aims: A) determine function of cadherin-4 in the development of zebrafish retinal ganglion cells, and B) determine function of cadherin-2 in the development of zebrafish retinal ganglion cells, and compare its function in retinal ganglion cell development with cadherin-4. A variety of techniques (e.g. application of cadherin antibodies, cadherin dominant-negative constructs, examination of cadherin-2 mutant) will be used in the project. The proposed studies, designed to uncover mechanisms underlying retinal ganglion cell development, may provide insights into therapies for injured or congenitally defective human retinal and optic nerve tissues.

Agency
National Institute of Health (NIH)
Institute
National Eye Institute (NEI)
Type
Academic Research Enhancement Awards (AREA) (R15)
Project #
2R15EY013879-02
Application #
6695940
Study Section
Molecular, Cellular and Developmental Neurosciences 2 (MDCN)
Program Officer
Hunter, Chyren
Project Start
2001-04-01
Project End
2007-06-30
Budget Start
2004-04-01
Budget End
2007-06-30
Support Year
2
Fiscal Year
2004
Total Cost
$147,000
Indirect Cost
Name
University of Akron
Department
Biology
Type
Schools of Arts and Sciences
DUNS #
045207552
City
Akron
State
OH
Country
United States
Zip Code
44325
Bhattarai, Sunil; Sochacka-Marlowe, Alicja; Crutchfield, Gerald et al. (2016) Krüpple-like factors 7 and 6a mRNA expression in adult zebrafish central nervous system. Gene Expr Patterns 21:41-53
Liu, Qin; Bhattarai, Sunil; Wang, Nan et al. (2015) Differential expression of protocadherin-19, protocadherin-17, and cadherin-6 in adult zebrafish brain. J Comp Neurol 523:1419-42
Liu, Qin; Dalman, Mark; Chen, Yun et al. (2012) Knockdown of leptin A expression dramatically alters zebrafish development. Gen Comp Endocrinol 178:562-72
Clendenon, Sherry G; Sarmah, Swapnalee; Shah, Bijal et al. (2012) Zebrafish cadherin-11 participates in retinal differentiation and retinotectal axon projection during visual system development. Dev Dyn 241:442-54
Chen, Yun; Londraville, Richard; Brickner, Sarah et al. (2012) Protocadherin-17 function in Zebrafish retinal development. Dev Neurobiol :
Liu, Q; Dalman, M R; Sarmah, S et al. (2011) Cell adhesion molecule cadherin-6 function in zebrafish cranial and lateral line ganglia development. Dev Dyn 240:1716-26
Liu, Qin; Chen, Yun; Kubota, Fumitaka et al. (2010) Expression of protocadherin-19 in the nervous system of the embryonic zebrafish. Int J Dev Biol 54:905-11
Liu, Qin; Chen, Yun; Copeland, Donald et al. (2010) Expression of leptin receptor gene in developing and adult zebrafish. Gen Comp Endocrinol 166:346-55
Liu, Qin; Chen, Yun; Pan, Jean J et al. (2009) Expression of protocadherin-9 and protocadherin-17 in the nervous system of the embryonic zebrafish. Gene Expr Patterns 9:490-6
Liu, Qin; Marrs, James A; Londraville, Richard L et al. (2008) Cadherin-7 function in zebrafish development. Cell Tissue Res 334:37-45

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