PUBLICATION
Shutdown corner, a large deletion mutant isolated from a haploid mutagenesis screen in zebrafish
- Authors
- Casey, M.A., Hill, J.T., Hoshijima, K., Bryan, C.D., Gribble, S.L., Brown, J.T., Chien, C.B., Yost, H.J., Kwan, K.M.
- ID
- ZDB-PUB-220127-5
- Date
- 2021
- Source
- G3 (Bethesda) 12(3): (Journal)
- Registered Authors
- Chien, Chi-Bin, Hoshijima, Kazuyuki, Kwan, Kristen, Yost, H. Joseph
- Keywords
- deletion, haploid screen, locomotion, muscle, optic cup morphogenesis, vasculature, zebrafish
- MeSH Terms
-
- Animals
- Haploidy
- Morphogenesis/genetics
- Mutagenesis/genetics
- Mutation
- Neurogenesis/genetics
- Retina
- Zebrafish*/genetics
- Zebrafish Proteins*/genetics
- PubMed
- 35079792 Full text @ G3 (Bethesda)
Citation
Casey, M.A., Hill, J.T., Hoshijima, K., Bryan, C.D., Gribble, S.L., Brown, J.T., Chien, C.B., Yost, H.J., Kwan, K.M. (2021) Shutdown corner, a large deletion mutant isolated from a haploid mutagenesis screen in zebrafish. G3 (Bethesda). 12(3):.
Abstract
Morphogenesis, the formation of three-dimensional organ structures, requires precise coupling of genetic regulation and complex cell behaviors. The genetic networks governing many morphogenetic systems, including that of the embryonic eye, are poorly understood. In zebrafish, several forward genetic screens have sought to identify factors regulating eye development. These screens often look for eye defects at stages after the optic cup is formed and when retinal neurogenesis is under way. This approach can make it difficult to identify mutants specific for morphogenesis, as opposed to neurogenesis. To this end, we carried out a forward genetic, small-scale haploid mutagenesis screen in zebrafish (Danio rerio) to identify factors that govern optic cup morphogenesis. We screened ∼100 genomes and isolated shutdown corner (sco), a mutant that exhibits multiple tissue defects and harbors a ∼10-Mb deletion that encompasses 89 annotated genes. Using a combination of live imaging and antibody staining, we found cell proliferation, cell death, and tissue patterning defects in the sco optic cup. We also observed other phenotypes, including paralysis, neuromuscular defects, and ocular vasculature defects. To date, the largest deletion mutants reported in zebrafish are engineered using CRISPR-Cas9 and are less than 300 kb. Because of the number of genes within the deletion interval, shutdown corner [Df(Chr05:sco)z207] could be a useful resource to the zebrafish community, as it may be helpful for gene mapping, understanding genetic interactions, or studying many genes lost in the mutant.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping