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  • Title: Establishment of a new fish cell line from the brain of humpback grouper (Cromileptes altivelis) and its application in toxicology and bacterial susceptibility.
    Author: Liu Y, Wei C, Liu Z, Cao Z, Sun Y, Zhou Y, Wang S, Guo W.
    Journal: Fish Physiol Biochem; 2021 Oct; 47(5):1645-1658. PubMed ID: 34448109.
    Abstract:
    Cromileptes altivelis, humpback grouper, belongs to the family Epinephelidae and is one popular farmed fish species because of its high economic value and ornamental value. However, more and more diseases outbreaks have been reported with C. altivelis aquaculture. Today, a new brain cell line of C. altivelis (named CAB) was established and characterized. Our results showed that CAB cells were suitable for growth at 26 °C in L-15 medium supplemented with 15% fetal bovine serum (FBS). The results of 18S rRNA gene sequencing confirmed that CAB cell line was derived from C. altivelis. Moreover, chromosomal aneuploidy was observed in CAB cells, and the modal chromosome number of CAB cells was 48 by chromosome analysis. In addition, CAB cells could transfect pEGFP-N3 plasmid with high transfection efficiency, indicating that CAB cell line has the potential to investigate the function of exogenous genes in vitro. Furthermore, the bacterial susceptibility results suggested that CAB cells were susceptive to Vibrio harveyi and Edwardsiella tarda. And, heavy metals (Hg, Cd, and Cu) were toxic to the CAB cells, and the toxic effect was dose-dependent. In summary, the CAB cell line could be a powerful tool in vitro to study functional genes and has the potential application in bacterial susceptibility and toxicology.
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