RTG-2
Cat.No.: CSC-C9056H
Species: Oncorhynchus mykiss (Rainbow trout)
Source: Ovary
Morphology: Fibroblast
Culture Properties: Adherent
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RTG-2 is a continuous fibroblast-like cell line originally established from gonadal tissue of the rainbow trout (Oncorhynchus mykiss). It is one of the most commonly used fish cell lines in the fields of aquatic biology, virology and environmental toxicology. RTG-2 cells have well-defined growth characteristics and are highly susceptible to a wide range of fish viruses. The cell line has been widely characterized and is routinely used in fish health and disease research as a standard in vitro model.
Functionally, RTG-2 cells are highly permissive to many fish viruses, including infectious hematopoietic necrosis virus (IHNV), viral hemorrhagic septicemia virus (VHSV) and infectious pancreatic necrosis virus (IPNV), among others. RTG-2 provides a useful platform for virus isolation, propagation and antiviral screening. In addition, the cell line is often used in research studies of fish immunology, host-pathogen interactions and cellular responses to environmental stressors.
RTG-2 is also commonly used in aquatic toxicology and ecotoxicology studies to assess the cytotoxic and genotoxic effects of environmental contaminants, chemicals and pharmaceuticals. Overall, RTG-2 offers a robust, reproducible and biologically relevant in vitro model for research applications in aquaculture, fish virology, environmental safety and regulatory testing.
Nucleic Acids Delivered by Cationic Phytoglycogen Nanoparticles Protect RTG-2 Cells Against VHSV-Iva Infection
The innate immune system recognizes pathogen-associated molecular patterns (PAMPs) to defend against infections. Oberhoffner et al. investigated the use of synthetic PAMP analogues to stimulate innate antiviral responses in rainbow trout cells, exploring their potential as prophylactic agents against viral diseases in aquaculture.
The cytotoxicity capacity of each nucleic acid and NDx alone or complexed was measured in vitro. RTG-2 cells were treated with serial dilutions of different nucleic acid and nanoparticle combinations ranging from 0.1 pg to 10 µg/mL (Fig. 1A-G). After 24 hrs, CFDA-AM and alamarBlue, which measure cellular membrane integrity and metabolism respectively, were applied. Neither membrane integrity nor metabolism were significantly reduced by any of the treatment groups at any of the tested concentrations.

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