PUBLICATION
The zebrafish cationic amino acid transporter/glycoprotein-associated family: sequence and spatiotemporal distribution during development of the transport system b0,+ (slc3a1/slc7a9)
- Authors
- Ellingsen, S., Narawane, S., Fjose, A., Verri, T., Rønnestad, I.
- ID
- ZDB-PUB-210803-12
- Date
- 2021
- Source
- Fish physiology and biochemistry 47(5): 1507-1525 (Journal)
- Registered Authors
- Ellingsen, Ståle, Fjose, Anders
- Keywords
- Gut, Heteromeric amino acid transporters, Kidney, Proximal convoluted tubule, Proximal straight tubule
- MeSH Terms
-
- Amino Acid Transport Systems, Basic*/genetics
- Amino Acids, Neutral*
- Animals
- Cystine/metabolism
- Glycoproteins
- Phylogeny
- Zebrafish/genetics
- Zebrafish/metabolism
- Zebrafish/physiology*
- PubMed
- 34338990 Full text @ Fish Physiol. Biochem.
Citation
Ellingsen, S., Narawane, S., Fjose, A., Verri, T., Rønnestad, I. (2021) The zebrafish cationic amino acid transporter/glycoprotein-associated family: sequence and spatiotemporal distribution during development of the transport system b0,+ (slc3a1/slc7a9). Fish physiology and biochemistry. 47(5):1507-1525.
Abstract
System b0,+ absorbs lysine, arginine, ornithine, and cystine, as well as some (large) neutral amino acids in the mammalian kidney and intestine. It is a heteromeric amino acid transporter made of the heavy subunit SLC3A1/rBAT and the light subunit SLC7A9/b0,+AT. Mutations in these two genes can cause cystinuria in mammals. To extend information on this transport system to teleost fish, we focused on the slc3a1 and slc7a9 genes by performing comparative and phylogenetic sequence analysis, investigating gene conservation during evolution (synteny), and defining early expression patterns during zebrafish (Danio rerio) development. Notably, we found that slc3a1 and slc7a9 are non-duplicated in the zebrafish genome. Whole-mount in situ hybridization detected co-localized expression of slc3a1 and slc7a9 in pronephric ducts at 24 h post-fertilization and in the proximal convoluted tubule at 3 days post-fertilization (dpf). Notably, both the genes showed co-localized expression in epithelial cells in the gut primordium at 3 dpf and in the intestine at 5 dpf (onset of exogenous feeding). Taken together, these results highlight the value of slc3a1 and slc7a9 as markers of zebrafish kidney and intestine development and show promise for establishing new zebrafish tools that can aid in the rapid screening(s) of substrates. Importantly, such studies will help clarify the complex interplay between the absorption of dibasic amino acids, cystine, and (large) neutral amino acids and the effect(s) of such nutrients on organismal growth.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping