PUBLICATION
1-phenyl 2-thiourea (PTU) activates autophagy in zebrafish embryos
- Authors
- Chen, X.K., Kwan, J.S., Chang, R.C., Ma, A.C.
- ID
- ZDB-PUB-200422-113
- Date
- 2020
- Source
- Autophagy 17(5): 1222-1231 (Journal)
- Registered Authors
- Keywords
- 1-phenyl 2-thiourea, autophagy, melanogenesis, tyrosinase, zebrafish embryo
- MeSH Terms
-
- Animals
- Autophagosomes/drug effects
- Autophagosomes/metabolism*
- Autophagy/drug effects*
- Chloroquine/pharmacology
- Class III Phosphatidylinositol 3-Kinases/metabolism
- Lysosomes/drug effects
- Lysosomes/metabolism
- Thiourea/metabolism
- Thiourea/pharmacology*
- Zebrafish/metabolism
- PubMed
- 32286915 Full text @ Autophagy
Citation
Chen, X.K., Kwan, J.S., Chang, R.C., Ma, A.C. (2020) 1-phenyl 2-thiourea (PTU) activates autophagy in zebrafish embryos. Autophagy. 17(5):1222-1231.
Abstract
1-phenyl 2-thiourea (PTU) is a Tyr (tyrosinase) inhibitor that is extensively used to block pigmentation and improve optical transparency in zebrafish (Danio rerio) embryo. Here, we reported a previously undescribed effect of PTU on macroautophagy/autophagy in zebrafish embryos. Upon 0.003% PTU treatment, aberrant autophagosome and autolysosome formation, accumulation of lysosomes, and elevated autophagic flux were observed in various tissues and organs of zebrafish embryos, such as skin, brain, and muscle. Similar to PTU treatment, autophagic activation and lysosomal accumulation were also observed in the somatic tyr mutant zebrafish embryos, which suggest that Tyr inhibition may contribute to PTU-induced autophagic activation. Furthermore, we demonstrated that autophagy contributes to pigmentation inhibition, but is not essential to the PTU-induced pigmentation inhibition. With the involvement of autophagy in a wide range of physiological and pathological processes and the routine use of PTU in zebrafish research of autophagy-related processes, these observations raise a novel concern in autophagy-related studies using PTU-treated zebrafish embryos.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping