PUBLICATION
Effect of nonsense-mediated mRNA decay factor SMG9 deficiency on premature aging in zebrafish
- Authors
- Lai, S., Shiraishi, H., Sebastian, W.A., Shimizu, N., Umeda, R., Ikeuchi, M., Kiyota, K., Takeno, T., Miyazaki, S., Yano, S., Shimada, T., Yoshimura, A., Hanada, R., Hanada, T.
- ID
- ZDB-PUB-240529-10
- Date
- 2024
- Source
- Communications biology 7: 654654 (Journal)
- Registered Authors
- Hanada, Reiko, Hanada, Toshikatsu
- Keywords
- none
- MeSH Terms
-
- Aging, Premature*/genetics
- Animals
- Mutation
- Nonsense Mediated mRNA Decay*
- Oxidative Stress
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Zebrafish*/genetics
- Zebrafish Proteins*/deficiency
- Zebrafish Proteins*/genetics
- Zebrafish Proteins*/metabolism
- PubMed
- 38806677 Full text @ Commun Biol
Citation
Lai, S., Shiraishi, H., Sebastian, W.A., Shimizu, N., Umeda, R., Ikeuchi, M., Kiyota, K., Takeno, T., Miyazaki, S., Yano, S., Shimada, T., Yoshimura, A., Hanada, R., Hanada, T. (2024) Effect of nonsense-mediated mRNA decay factor SMG9 deficiency on premature aging in zebrafish. Communications biology. 7:654654.
Abstract
SMG9 is an essential component of the nonsense-mediated mRNA decay (NMD) machinery, a quality control mechanism that selectively degrades aberrant transcripts. Mutations in SMG9 are associated with heart and brain malformation syndrome (HBMS). However, the molecular mechanism underlying HBMS remains unclear. We generated smg9 mutant zebrafish (smg9oi7/oi7) that have a lifespan of approximately 6 months or longer, allowing for analysis of the in vivo function of Smg9 in adults in more detail. smg9oi7/oi7 zebrafish display congenital brain abnormalities and reduced cardiac contraction. Additionally, smg9oi7/oi7 zebrafish exhibit a premature aging phenotype. Analysis of NMD target mRNAs shows a trend toward increased mRNA levels in smg9oi7/oi7 zebrafish. Spermidine oxidase (Smox) is increased in smg9oi7/oi7 zebrafish, resulting in the accumulation of byproducts, reactive oxygen species, and acrolein. The accumulation of smox mRNA due to NMD dysregulation caused by Smg9 deficiency leads to increased oxidative stress, resulting in premature aging.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping