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Molecular characterization, expression following cold stress, and functional characterization of YB-1 gene in the spotted sea bass (Lateolabrax maculatus)

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A Correction to this article was published on 14 June 2022

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Abstract

Existing data indicate that YB-1, a gene member of the cold chock domain family, is regulated by cold stress in many species. However, information regarding YB-1 in fish is limited. To gain more insight into the potential biological function of YB-1 after cold stress, we have cloned YB-1 of the spotted sea bass (Lateolabrax maculatus) and studied the expression at transcriptional level of the LmYB-1 gene under low temperature. The cloned LmYB-1 cDNA (1454 bp) includes a 900-bp open-reading frame that encodes a 300-residue protein and contains C-terminal, CSD, and N-terminal domains. The results of real-time quantitative PCR showed that LmYB-1 was expressed in all tested tissues, with the highest expression in liver. Within liver, brain, and heart, LmYB-1 mRNA expression increased during cold stressed fish, compared to control fish. No significant induces in the expression of LmYB-1 were recorded in muscle, except at 10 °C during 24 h cold stress. Overexpression of LmYB-1 in CIK cells caused the upregulation of the expression of Hsc70, SOD1, and SOD2. Our results provided new insights into the LmYB-1 expression during cold stress and warranted further investigation into this potentially important protein in improving fish farming at low temperature.

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Funding

The research was supported by the the funding of “Blue granary” scientific and technological innovation of China (2019YFD0900405), and National Natural Science Foundation of China (32170523).

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Liqun Liang and Weijie Mu designed the experiments, analyzed data and wrote the manuscript together. The samples were obtained and the experiments were carried out by Zhen Wang and Jing Wang.

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Correspondence to Weijie Mu or Liqun Liang.

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The authors followed all applicable international, national, and/or institutional guidelines for animal care and use. However, this study was approved by the Ethics Committee of Heilongjiang River Fisheries Research Institute.

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All names in the author list have been involved in various stages of experimentation or writing.

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The authors declare no competing interests.

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Wang, Z., Wang, J., Mu, W. et al. Molecular characterization, expression following cold stress, and functional characterization of YB-1 gene in the spotted sea bass (Lateolabrax maculatus). Aquacult Int 30, 1931–1950 (2022). https://doi.org/10.1007/s10499-022-00882-y

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  • DOI: https://doi.org/10.1007/s10499-022-00882-y

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