Molecular Neurobiology

, Volume 40, Issue 2, pp 122–138 | Cite as

Olfactomedin Domain-Containing Proteins: Possible Mechanisms of Action and Functions in Normal Development and Pathology

Article

Abstract

A family of olfactomedin domain-containing proteins consists of at least 13 members in mammals. Although the first protein belonging to this family, olfactomedin, was isolated and partially characterized from frog olfactory neuroepithelim almost 20 years ago, the functions of many family members remain elusive. Most of the olfactomedin domain-containing proteins, similar to frog olfactomedin, are secreted glycoproteins that demonstrate specific expression patterns. Other family members are membrane-bound proteins that may serve as receptors. More than half of the olfactomedin domain-containing genes are expressed in neural tissues. Data obtained over the last several years demonstrate that olfactomedin domain-containing proteins play important roles in neurogenesis, neural crest formation, dorsal ventral patterning, cell–cell adhesion, cell cycle regulation, and tumorigenesis and may serve as modulators of critical signaling pathways (Wnt, bone morphogenic protein). Mutations in two genes encoding myocilin and olfactomedin 2 were implicated in glaucoma, and a growing number of evidence indicate that other genes belonging to the family of olfactomedin domain-containing proteins may contribute to different human disorders including psychiatric disorders. In this review, we summarize recent advances in understanding the possible roles of these proteins with special emphasis on the proteins that are preferentially expressed and function in neural tissues.

Keywords

Olfactomedin Myocilin Glaucoma Eye Brain Neurogenesis Olfactomedin domain-containing protein Neural crest 

Notes

Acknowledgments

The authors thank T. V. Johnson for critical reading of the manuscript and helpful comments and the reviewers for useful suggestions.

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Copyright information

© Humana Press Inc. 2009

Authors and Affiliations

  1. 1.Section of Molecular Mechanisms of Glaucoma, Laboratory of Molecular and Developmental BiologyNational Eye Institute, NIHBethesdaUSA

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