PUBLICATION
Gene transcription ontogeny of hypothalamic-pituitary-thyroid axis development in early-life stage fathead minnow and zebrafish
- Authors
- Vergauwen, L., Cavallin, J.E., Ankley, G.T., Bars, C., Gabriëls, I.J., Michiels, E.D.G., Fitzpatrick, K.R., Periz-Stanacev, J., Randolph, E.C., Robinson, S.L., Saari, T.W., Schroeder, A.L., Stinckens, E., Swintek, J., Van Cruchten, S.J., Verbueken, E., Villeneuve, D.L., Knapen, D.
- ID
- ZDB-PUB-180509-17
- Date
- 2018
- Source
- General and comparative endocrinology 266: 87-100 (Journal)
- Registered Authors
- Knapen, Dries, Van Cruchten, Steven, Verbueken, Evy, Vergauwen, Lucia
- Keywords
- HPT axis, early development, endocrine system, fish, mRNA expression, thyroid hormone
- MeSH Terms
-
- Animals
- Cyprinidae/embryology*
- Cyprinidae/genetics*
- Embryonic Development
- Fish Proteins/metabolism
- Hypothalamo-Hypophyseal System/metabolism*
- Larva/metabolism
- Principal Component Analysis
- Species Specificity
- Thyroid Gland/metabolism*
- Transcription, Genetic*
- Zebrafish/embryology*
- Zebrafish/genetics*
- PubMed
- 29733815 Full text @ Gen. Comp. Endocrinol.
Citation
Vergauwen, L., Cavallin, J.E., Ankley, G.T., Bars, C., Gabriëls, I.J., Michiels, E.D.G., Fitzpatrick, K.R., Periz-Stanacev, J., Randolph, E.C., Robinson, S.L., Saari, T.W., Schroeder, A.L., Stinckens, E., Swintek, J., Van Cruchten, S.J., Verbueken, E., Villeneuve, D.L., Knapen, D. (2018) Gene transcription ontogeny of hypothalamic-pituitary-thyroid axis development in early-life stage fathead minnow and zebrafish. General and comparative endocrinology. 266:87-100.
Abstract
The hypothalamic-pituitary-thyroid (HPT) axis is known to play a crucial role in the development of teleost fish. However, knowledge of endogenous transcription profiles of thyroid-related genes in developing teleosts remains fragmented. We selected two model teleost species, the fathead minnow (Pimephales promelas) and the zebrafish (Danio rerio), to compare the gene transcription ontogeny of the HPT axis. Control organisms were sampled at several time points during embryonic and larval development until 33 days post-fertilization. Total RNA was extracted from pooled, whole fish, and thyroid-related mRNA expression was evaluated using quantitative polymerase chain reaction. Gene transcripts examined included: thyrotropin-releasing hormone receptor (trhr), thyroid-stimulating hormone receptor (tshr), sodium-iodide symporter (nis), thyroid peroxidase (tpo), thyroglobulin (tg), transthyretin (ttr), deiodinases 1, 2, 3a, and 3b (dio1, dio2, dio3a and 3b), and thyroid hormone receptors alpha and beta (thrα and β). A loess regression method was successful in identifying maxima and minima of transcriptional expression during early development of both species. Overall, we observed great similarities between the species, including maternal transfer, at least to some extent, of almost all transcripts (confirmed in unfertilized eggs), increasing expression of most transcripts during hatching and embryo-larval transition, and indications of a fully functional HPT axis in larvae. These data will aid in the development of hypotheses on the role of certain genes and pathways during development. Furthermore, this provides a background reference dataset for designing and interpreting targeted transcriptional expression studies both for fundamental research and for applications such as toxicology.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping