Knockdown Of Leptin A Expression Dramatically Alters Zebrafish Development

Title

Knockdown Of Leptin A Expression Dramatically Alters Zebrafish Development

Creator

Liu Q; Dalman M; Chen Y; Akhter M; Brahmandam S; Patel Y; Lowe J; Thakkar M; Gregory A V; Phelps D; Riley C; Londraville R L

Publisher

General and Comparative Endocrinology

Date

2012
2012-09

Description

Using morpholino antisense oligonucleotide (MO) technology, we blocked leptin A or leptin receptor expression in embryonic zebrafish, and analyzed consequences of leptin A knock-down on fish development. Embryos injected with leptin A or leptin receptor MOs (leptin A or leptin receptor morphants) had smaller bodies and eyes, undeveloped inner ear, enlarged pericardial cavity, curved body and/or tail and larger yolk compared to control embryos of the same stages. The defects persisted in 6-9 days old larvae. We found that blocking leptin A function had little effect on the development of early brain (1 day old), but differentiation of both the morphant dorsal brain and retinal cells was severely disrupted in older (2 days old) embryos. Despite the enlarged pericardial cavity, differentiation of cardiac cells appeared to be similar to control embryos. Formation of the morphants' inner ear is also severely disrupted, which corroborates existing reports of leptin receptor expression in inner ear of both zebrafish and mammals. Co-injection of leptin A MO and recombinant leptin results in partial rescue of the wild-type phenotype. Our results suggest that leptin A plays distinct roles in zebrafish development. (c) 2012 Elsevier Inc. All rights reserved.

Subject

atlantic salmon; Auditory; bhlh genes; bone; carp cyprinus-carpio; cell fate specification; central-nervous-system; cloning; danio-rerio; differentiation; Endocrinology & Metabolism; gene; metabolism; n-cadherin; receptor; sensory ganglia; Visual; visual-system

Format

Journal Article or Conference Abstract Publication

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Rights

Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).

Pages

562-572

Issue

3

Volume

178

Citation

Liu Q; Dalman M; Chen Y; Akhter M; Brahmandam S; Patel Y; Lowe J; Thakkar M; Gregory A V; Phelps D; Riley C; Londraville R L, “Knockdown Of Leptin A Expression Dramatically Alters Zebrafish Development,” NEOMED Bibliography Database, accessed December 1, 2021, https://neomed.omeka.net/items/show/10780.

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