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Fish Physiology and Biochemistry

, Volume 45, Issue 1, pp 123–131 | Cite as

Establishment and characterization of a caudal fin-derived cell line, AOF, from the Oscar, Astronotus ocellatus

  • Raj Kumar
  • Charan Ravi
  • Sweta Das
  • Arathi Dharmaratnam
  • Valaparambil Saidumohammad Basheer
  • Thangaraj Raja SwaminathanEmail author
Article

Abstract

Astronotus ocellatus, commonly called the oscar, is one of the popular cichlids among aquarium hobby. The present study deals with the development and characterization of a new cell line from caudal fin of A. ocellatus. The cell line was cultured in Leibovitz’s L−15 medium supplemented with 10% fetal bovine serum at 28 °C. The optimum temperature and FBS concentration for cell growth were tested with temperature ranges from 20 to 37 °C and FBS concentrations of 5–20% at 28 °C. The Astronotus ocellatus fin cell line has been subcultured 45 times since its development and the modal chromosome number (2n) is 48. The cell line is composed mainly of epithelial cells as confirmed by immunocytological technique using anti-cytokeratin antibodies. The cell line was cryopreserved at different passage levels and the revival efficiency showed 80% survival rate. Partial sequence amplification and sequencing of two genes, mitochondrial 16S ribosomal RNA and cytochrome oxidase I, confirmed the origin of cell line. The cell line did not show Mycoplasma contamination. The cells showed good transfection efficiency when transfected with 2 μg of pAcGFP1-N1 expression vector. The extracellular products of fish bacterial pathogens viz., Aeromonas hydrophila and A. caviae, were cytotoxic to AOF cells but were not susceptible to Cyprinid herpes virus 2. The development of AOF cell line will have significant applications in fish virology and will prove useful to isolate pathogens in the event of sudden viral disease outbreak and for the development of vaccines and diagnostic kits.

Keywords

AOF Cell line Oscar fish Astronotus ocellatus Cytotoxicity Fish virus 

Notes

Acknowledgements

The authors express their thanks to Director, ICAR-NBFGR and Deputy Director General (Fy. Sc.), ICAR for the support, guidance, and encouragement. The authors are also thankful to National Fisheries Development Board, DADF, Ministry of Agriculture and Farmers Welfare for the financial support under NSPAAD (Grant Number: NFDB/Coord/NBFGR/2012-13/16720 dated 11.02.2013).

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Copyright information

© Springer Nature B.V. 2018

Authors and Affiliations

  1. 1.Peninsular and Marine Fish Genetic Resources Centre, ICAR-NBFGRKochiIndia

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