Fish Cell Culture and Characterization Techniques

Fish cell culture encompasses the isolation, propagation and detailed analysis of cells derived from diverse piscine tissues, ranging from muscle and intestine to kidney, gill and immune organs. Primary cultures are established via enzymatic digestion or explant techniques, yielding cells that retain many in vivo characteristics but display limited lifespan. Continuous cell lines arise through spontaneous immortalisation or transfection with oncogenes, enabling long-term studies under controlled temperature and serum conditions. Optimisation of medium composition, growth factors and physical parameters (temperature, pH, osmolarity) is critical to support proliferation, differentiation and functional assays. Characterisation strategies combine morphological examination, karyotyping and molecular authentication by mitochondrial or ribosomal gene sequencing. Barrier integrity is assessed by measurements such as transepithelial electrical resistance, while co-culture systems recreate epithelial–mesenchymal interactions. Modern applications include virology, toxicology, immunology, nutrition and drug screening, feeding into sustainable aquaculture, environmental risk assessment and fundamental research into fish physiology.

Research from Nature Portfolio

Researchers have developed a continuous cell line from the caudal fin of a marine ornamental species, achieving more than 30 passages while maintaining chromosomal stability. Authentication by mitochondrial COI and 16S rRNA sequencing confirmed species origin, and the line exhibited robust growth in optimised serum-supplemented medium at 28 °C. Transfection experiments demonstrated efficient gene delivery, and susceptibility to a nervous necrosis virus was established by observation of cytopathic effects and nested PCR. The cryopreserved cells retained high viability upon revival, underscoring their value as an in vitro platform for virological, toxicological and biotechnological studies.

Fish Cell Culture and Characterization Techniques publication trend

The graph below shows the total number of articles in fish cell culture and characterization techniques across all publications each year (not limited to Nature Index journals).

Technical terms

Primary cell culture: The initial cultivation of cells directly isolated from fish tissues, retaining differentiated functions but limited by senescence.

Cell line: A population of fish cells rendered immortal, through spontaneous or induced mechanisms, permitting indefinite proliferation in vitro.

Explant technique: A method of establishing cultures by placing small fragments of tissue onto culture vessels, enabling outgrowth of adherent cells.

Spontaneous immortalisation: A natural crisis event where cultured cells acquire mutations allowing escape from replicative senescence and continuous division.

Transepithelial electrical resistance (TEER): A biophysical measurement of ionic conductance across a cell monolayer, indicating barrier tightness.

Co-culture: The parallel culture of two or more cell types to recreate physiological interactions and microenvironmental crosstalk.

References

1. Profiling the Physiological Roles in Fish Primary Cell Culture. Biology (2023).
2. Establishment and Characterization of Continuous Satellite Muscle Cells from Olive Flounder (Paralichthys olivaceus): Isolation, Culture Conditions, and Myogenic Protein Expression. Cells (2023).
3. Role and relevance of fish cell lines in advanced in vitro research. Molecular Biology Reports (2022).
4. A fish intestinal epithelial barrier model established from the rainbow trout (Oncorhynchus mykiss) cell line, RTgutGC. Cell Biology and Toxicology (2017).
5. Improving a fish intestinal barrier model by combining two rainbow trout cell lines: epithelial RTgutGC and fibroblastic RTgutF. Cytotechnology (2019).
6. Derivation and characterization of new cell line from intestine of turbot (Scophthalmus maximus). In Vitro Cellular & Developmental Biology - Animal (2023).
7. Characterization of a new cell line from ornamental fish Amphiprion ocellaris (Cuvier, 1830) and its susceptibility to nervous necrosis virus. Scientific Reports (2020).