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Dev Biol. 2012 Mar 1;363(1):84-94. doi: 10.1016/j.ydbio.2011.12.023. Epub 2011 Dec 22.

The cytokine macrophage migration inhibitory factor (MIF) acts as a neurotrophin in the developing inner ear of the zebrafish, Danio rerio.

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1
Department of Cell and Developmental Biology, Medical School, University of Michigan, Ann Arbor, MI, USA.

Abstract

Macrophage migration inhibitory factor (MIF) plays versatile roles in the immune system. MIF is also widely expressed during embryonic development, particularly in the nervous system, although its roles in neural development are only beginning to be understood. Evidence from frogs, mice and zebrafish suggests that MIF has a major role as a neurotrophin in the early development of sensory systems, including the auditory system. Here we show that the zebrafish mif pathway is required for both sensory hair cell (HC) and sensory neuronal cell survival in the ear, for HC differentiation, semicircular canal formation, statoacoustic ganglion (SAG) development, and lateral line HC differentiation. This is consistent with our findings that MIF is expressed in the developing mammalian and avian auditory systems and promotes mouse and chick SAG neurite outgrowth and neuronal survival, demonstrating key instructional roles for MIF in vertebrate otic development.

PMID:
22210003
PMCID:
PMC3288529
DOI:
10.1016/j.ydbio.2011.12.023
[Indexed for MEDLINE]
Free PMC Article

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