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The fatty acid chain elongase, Elovl1, is required for kidney and swim bladder development during zebrafish embryogenesis
- Source :
- Organogenesis. 12(2)
- Publication Year :
- 2016
-
Abstract
- Very long chain fatty acids are required for sphingolipid synthesis, lipid homeostasis, myelin formation, epidermal permeability, and retinal function. Seven different enzymes are known to be involved in the elongation cycle of fatty acids, with different chain-length specificities. Elovl1 is one of those enzymes whose function has been linked mainly to the synthesis of sphingolipids and the epidermal barrier. However, the role of Elovl1 in organogenesis is not clear. In zebrafish, 2 Elovl1 genes, elovl1a and elovl1b, are highly expressed in the swim bladder, and elovl1b is also expressed in the kidney. We found that both elovl1 knockdown embryos contain increased levels of long chain fatty acids from carbon number 14 to 20 as compared to control embryos. Oil-Red-O staining shows that yolk lipid consumption is greatly reduced, whereas lipid droplets accumulate within the swim bladder. Notably, knockdown of either elovl1a or elovl1b affects the expression of genes involved in swim bladder development and impairs inflation of the swim bladder. Consistent with its expression in the pronephros, knockdown of elovl1b alone affects the expression of genes required for kidney development and reduces renal clearance. Our findings strongly suggest that both elovl1 genes are a key determinant of swim bladder and kidney development in zebrafish, which may be comparatively applicable to lung and kidney development in humans.
- Subjects :
- 0301 basic medicine
Embryology
Embryo, Nonmammalian
Biomedical Engineering
Kidney development
Embryonic Development
Biology
Kidney
03 medical and health sciences
Acetyltransferases
Lipid droplet
Gene Duplication
Swim bladder
medicine
Animals
Amino Acid Sequence
Zebrafish
Conserved Sequence
Myelin Sheath
chemistry.chemical_classification
Mammals
Neurons
Transplantation
Gene knockdown
Genome
030102 biochemistry & molecular biology
Air Sacs
Fatty acid
Gene Expression Regulation, Developmental
Zebrafish Proteins
biology.organism_classification
Lipid Metabolism
Egg Yolk
Pronephros
Cell biology
030104 developmental biology
medicine.anatomical_structure
Biochemistry
chemistry
Gene Knockdown Techniques
Developmental Biology
Research Paper
Subjects
Details
- ISSN :
- 15558592
- Volume :
- 12
- Issue :
- 2
- Database :
- OpenAIRE
- Journal :
- Organogenesis
- Accession number :
- edsair.doi.dedup.....2605deef6d831ea54ec452b72fef644c