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Measuring mRNA Levels Over Time During the Yeast S. cerevisiae Hypoxic Response
Published on: August 10, 2017
The response of HMGA1 to changes in oxygen availability is evolutionarily conserved
Seyyed Hani Moussavi Nik1, Morgan Newman, Michael Lardelli
1Discipline of Genetics, School of Molecular and Biomedical Sciences, The University of Adelaide, Australia. seyyed.moussavinik@adelaide.edu.au
Experimental Cell Research
|May 3, 2011
Summary
Zebrafish embryos can suspend development during hypoxia. Researchers identified the zebrafish hmga1 gene, finding its expression varies with hypoxia and development stage, offering insights into vertebrate development and cancer.
Area of Science:
- Developmental Biology
- Molecular Biology
- Genetics
Background:
- Zebrafish embryos exhibit remarkable adaptation to hypoxia, including developmental suspension.
- Limited research exists on gene regulation in zebrafish embryos responding to hypoxia.
- High Mobility Group A1 (HMGA1) protein is crucial in mammalian development and cancer, with expression inducible by hypoxia.
Purpose of the Study:
- To identify and characterize the HMGA1 orthologue in zebrafish.
- To investigate the role of hypoxia in regulating zebrafish hmga1 expression during development.
- To explore the potential for using zebrafish to study HMGA1 function in vertebrate development and disease.
Main Methods:
- Phylogenetic and conserved synteny analyses to identify the zebrafish hmga1 gene.
- Sodium azide treatment to induce hypoxia-like responses in zebrafish embryos.
- RT-PCR analysis to examine hmga1 transcript levels and PSEN2 isoform formation.
Main Results:
- Identified the zebrafish hmga1 gene, with only the 'a' isoform detected.
- Zebrafish hmga1 expression is induced by hypoxia during the hatching stage and in adult brains, but decreases earlier in development.
- Evidence suggests zebrafish do not form an equivalent to the human PS2V isoform of PSEN2.
Conclusions:
- Zebrafish hmga1 expression patterns are similar to mammals, providing a model for studying HMGA1's role in vertebrate development and cancer.
- Hypoxia differentially regulates zebrafish hmga1 expression during embryogenesis.
- Zebrafish are not suitable for studying HMGA1's role in PS2V formation.
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