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Updated: Nov 26, 2025

Shifting Zebrafish Lethal Skeletal Mutant Penetrance by Progeny Testing

Shifting Zebrafish Lethal Skeletal Mutant Penetrance by Progeny Testing

Published on: September 1, 2017

Postembryonic screen for mutations affecting spine development in zebrafish.

Ryan S Gray¹, Roberto Gonzalez², Sarah D Ackerman³

¹Department of Nutritional Sciences, Dell Pediatric Research Institute, University of Texas at Austin, Austin, TX, USA; Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO, USA.

Developmental Biology

|December 8, 2020

Summary

This summary is machine-generated.

Researchers identified 40 new zebrafish mutations affecting spine development, revealing key genes for spine morphogenesis and potential links to human scoliosis. This study advances understanding of spinal disorders.

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Dissection and Lateral Mounting of Zebrafish Embryos: Analysis of Spinal Cord Development

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Published on: February 28, 2014

Area of Science:

Developmental Biology
Genetics
Zebrafish Models

Background:

The spine's development and maturation involve complex interactions between musculoskeletal tissues and the nervous system.
Adolescent idiopathic scoliosis (AIS) is a common human spinal disorder with an largely unknown genetic basis.
Zebrafish embryonic screens have illuminated early spine patterning, but postembryonic maturation mechanisms remain unclear.

Purpose of the Study:

To identify genes and mechanisms regulating adult spine morphogenesis and homeostasis using zebrafish.
To uncover genetic factors contributing to spinal abnormalities, potentially relevant to human scoliosis.

Main Methods:

Conducted a forward genetic screen in zebrafish for adult-viable mutations affecting spine morphology.
Utilized N-ethyl N-nitrosourea (ENU) mutagenesis to induce dominant and recessive mutations.
Employed whole genome/exome sequencing and meiotic mapping to identify causative genes for identified mutations.

Main Results:

Identified 40 adult-viable mutations (3 dominant, 37 recessive) impacting spine morphogenesis.
The largest group exhibited larval-onset axial curvatures leading to whole-body scoliosis.
Discovered mutations in genes including kif6, scospondin, and adamts9, highlighting their roles in spine development.

Conclusions:

Demonstrated that monogenic traits are essential for normal spine development in zebrafish.
Identified novel genes and loci involved in postembryonic spine maturation.
These findings provide potential candidate risk loci for human spine disorders like scoliosis.