PUBLICATION
Transient modification of lin28b expression - Permanent effects on zebrafish growth
- Authors
- Leinonen, J.T., Chen, Y.C., Tukiainen, T., Panula, P., Widén, E.
- ID
- ZDB-PUB-180910-6
- Date
- 2018
- Source
- Molecular and Cellular Endocrinology 479: 61-70 (Journal)
- Registered Authors
- Panula, Pertti
- Keywords
- Development, Hypothalamus, Kiss2, Lin28b, Zebrafish
- MeSH Terms
-
- Animals
- Embryo, Nonmammalian/metabolism
- Embryonic Development/genetics
- Gene Expression Regulation, Developmental*
- Gene Knockdown Techniques
- Humans
- Hypothalamus/metabolism
- Larva/metabolism
- Pituitary Gland/metabolism
- Polymorphism, Single Nucleotide/genetics
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- RNA-Binding Proteins/genetics*
- RNA-Binding Proteins/metabolism
- Time Factors
- Up-Regulation/genetics
- Zebrafish/growth & development*
- Zebrafish/metabolism*
- Zebrafish Proteins/genetics*
- Zebrafish Proteins/metabolism
- PubMed
- 30196135 Full text @ Mol. Cell. Endocrinol.
Citation
Leinonen, J.T., Chen, Y.C., Tukiainen, T., Panula, P., Widén, E. (2018) Transient modification of lin28b expression - Permanent effects on zebrafish growth. Molecular and Cellular Endocrinology. 479:61-70.
Abstract
Recent genome-wide association studies and mouse models have identified LIN28B as a gene affecting several pubertal timing-related traits and vertebrate growth. However, the exact biological mechanisms underlying the associations remain unknown. We have explored the mechanisms linking LIN28B with growth regulation by combining human gene expression data with functional models. Specifically, we show that 1) pubertal timing-associated genetic variation correlates with LIN28B expression in the pituitary and hypothalamus, 2) downregulating lin28b in zebrafish embryos associates with aberrant development of kiss2-neurons, and 3) increasing lin28b expression transiently by synthetic mRNA injections during embryogenesis results in sustained enhancement of zebrafish growth. Unexpectedly, the mRNA injections resulted in advanced sexual maturation of female fish, suggesting that lin28b may influence pubertal timing through multiple developmental mechanisms. Overall, these results provide novel insight into LIN28B function in vertebrate growth regulation, emphasizing the importance of the gene and related genetic pathways for embryonic and juvenile development.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping