Fish cell lines are increasingly important research tools. The SAF-1 cell line, fibroblast-like culture derived from the marine fish gilthead seabream (Sparus aurata), has proved useful in many applications, especially in viral research. For cell lines intended as in vitro models, characterization of their properties and authentication are essential for deeper understanding of their performance and thus more precise experimental design and applicability. In this study we characterized the SAF-1 cell line in terms of genetic stability through time and genetic labeling. Methods for determining stability include telomerase activity, karyotyping, mapping of ribosomal RNA regions, and DNA content. For genetic labeling 12 microsatellite loci were used. The results indicate that telomerase has been activated in the course of SAF-1 development, and the highest levels of telomerase activity correlate with an increase in cell proliferation, thus supporting a permanent cell line. This stability is in agreement with the normal situation presented by the cytogenetic traits and DNA content values, and the genotypic profile allows SAF-1 authentication at the single individual level. This study increases the value of SAF-1 as an in vitro system, which is now one of the few well-characterized cell lines from a marine fish.
Marine Biotechnology – Springer Journals
Published: Jun 4, 2005
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