PUBLICATION
Conserved Noncoding Sequences Regulate lhx5 Expression in the Zebrafish Forebrain
- Authors
- Sun, L., Chen, F., Peng, G.
- ID
- ZDB-PUB-150707-3
- Date
- 2015
- Source
- PLoS One 10: e0132525 (Journal)
- Registered Authors
- Chen, Fengjiao, Peng, Gang, Sun, Liu
- Keywords
- Zebrafish, embryos, sequence alignment, fishes, vertebrates, gene regulation, amphibian genomics, gene expression
- MeSH Terms
-
- Animals
- Conserved Sequence
- Enhancer Elements, Genetic
- Gene Expression Regulation, Developmental*
- Gene Transfer Techniques
- LIM-Homeodomain Proteins/genetics*
- LIM-Homeodomain Proteins/metabolism
- Prosencephalon/metabolism*
- Transcription Factors/genetics*
- Transcription Factors/metabolism
- Zebrafish/genetics*
- Zebrafish/metabolism
- Zebrafish Proteins/genetics*
- Zebrafish Proteins/metabolism
- PubMed
- 26147098 Full text @ PLoS One
Citation
Sun, L., Chen, F., Peng, G. (2015) Conserved Noncoding Sequences Regulate lhx5 Expression in the Zebrafish Forebrain. PLoS One. 10:e0132525.
Abstract
The LIM homeobox family protein Lhx5 plays important roles in forebrain development in the vertebrates. The lhx5 gene exhibits complex temporal and spatial expression patterns during early development but its transcriptional regulation mechanisms are not well understood. Here, we have used transgenesis in zebrafish in order to define regulatory elements that drive lhx5 expression in the forebrain. Through comparative genomic analysis we identified 10 non-coding sequences conserved in five teleost species. We next examined the enhancer activities of these conserved non-coding sequences with Tol2 transposon mediated transgenesis. We found a proximately located enhancer gave rise to robust reporter EGFP expression in the forebrain regions. In addition, we identified an enhancer located at approximately 50 kb upstream of lhx5 coding region that is responsible for reporter gene expression in the hypothalamus. We also identify an enhancer located approximately 40 kb upstream of the lhx5 coding region that is required for expression in the prethalamus (ventral thalamus). Together our results suggest discrete enhancer elements control lhx5 expression in different regions of the forebrain.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping