Abstract
A colorimetric assay utilising Neutral Red (C.I. 50040), a nuclear stain, was developed to determine the cellular viability of hybridoma cells in microtitre plates. A linear correlation (r=0.99) was found to exist between the uptake of Neutral Red by viable cells and the viable cell count determined by Trypan blue exclusion test. The linearity stretched over the range of cell concentrations normal in batch cultures (2–30×104/0.2 ml) with as little as ±6% intra-plate well-to-well variation and ±10.2% inter-assay variation.
Microscopical examinations of viable hybridoma cells stained with Neutral Red showed that it was located in the nucleus. The possble bifunctional activity of the Neutral Red assay as a test for cellular viability and estimating the DNA content of hybridoma cells is discussed along with its application in a drug screening programme.
Similar content being viewed by others
References
Alberts B, Bray D, Lewis J, Raff M, Roberts K and Watson JD (eds.) (1983) Molecular Biology of The Cell (3rd edition), (pp. 412). Garland Publishing Inc. New York and London.
Allison AC and Young MR (1969) Vital staining in fluorescence microscopy of lysosomes. In: Dingle JT and Fell HB (eds.) Volume 2 (pp. 600–626) Wiley, New York.
Borenfreund E and Puerner JA (1985) Toxicity determinedin vitro by morphological alterations and Neutral Red absorption. Toxicity Letters 24: 119–124.
Buckel P, Hubner-Parajsz C, Mattes R, Lenz H, Haug H and Beauchamp K. (1987) Cloning and nucleotide sequence of heavy and light chain cDNAs from a creatine-kinase-specific monoclonal antibody. Gene 51: 13–19.
CloneticsTM corporation pamphlet (1990) Neutral Red bioassay.
Coco-Martin JM, Oberink JW, Tiny AM, van der Velden-de Groot CAM and Beuvery EC (1992) Viability measurement of hybridoma cells in suspension cultures. Cytotechnology 8: 57–64.
Cook JA and Mitchell JB (1989) Viability measurements in mammalian cell systems. Analytical Biochemistry 179: 1–7.
Evans HM and Schulermann W (1914) The action of vital stains belonging to the benzydene group. Science 34: 443–454.
Kull FC and Cuattrecasas P (1981) Preliminary characterisation of the tumour cell cytotoxin in tumour necrosis serum. J. Immunology 126: 1279–1283.
Laughton C (1984) Quantification of attached cells in microtitre plates based on Coomassie Brilliant Blue G-250 staining of total cellular protein. Analytical Biochemistry 140: 417–423.
Mirabelli CK, Bartus H, Bartus JOL, Johnson R, Mong SM, Sung CP and Crooke ST (1985) Application of a tissue culture microtitre test for the detection of cytotoxic agents from natural products. J. Antibiotics 68: 758–766.
Modha K (1990) An investigation into the effects of inhibitors of DNA biosynthesis on monoclonal antibody production in hybridoma cell cultures. Ph.D Thesis, University of Surrey, Guildford, Surrey.
Modha K, Whiteside PJ and Spier RE (1991) Dissociation of MAB production from cell division using DNA biosynthesis inhibitors. In: Spier RE, Griffiths JB and MacDonald C (eds.) Animal Cell Technology: Developments, Processing and Products, (pp. 79–87). Butterworth-Heinemann.
Nilsson K, Scheirer W, Merton O-W, Ostberg L, Leihl E, Katinger HWD and Mosbach K. (1983) Entrapment of animal cells for the production of monoclonal antibodies and other biomolecules. Nature 302: 629–630.
Parish CR and Mullbacher A (1983) Automated colorimetric assay for T-cell cytotoxicity. J. Immunological Methods 58: 25–237.
Patterson Jr MK (1979) Measurement of growth and viability of cells in culture. Methods in Enzymology 58: 141–148.
Sasaki DT, Dumas SE and Engleman EG (1987) Discrimination of viable and non-viable cells using propidium iodide in two colour immunofluorescence. Cytometry 8: 413–430.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Modha, K., Whiteside, J.P. & Spier, R.E. The determination of cellular viability of hybridoma cells in microtitre plates: A colorimetric assay based on neutral red. Cytotechnology 13, 227–232 (1993). https://doi.org/10.1007/BF00749819
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00749819