Cytotechnology

, Volume 7, Issue 1, pp 15–24

Growth limitation in hybridoma cell cultures: The role of inhibitory or toxic metabolites

  • Øystein W. Rønning
  • Mona Schartum
  • Andreas Winsnes
  • Gro Lindberg
Original Research Papers

DOI: 10.1007/BF00135634

Cite this article as:
Rønning, Ø.W., Schartum, M., Winsnes, A. et al. Cytotechnology (1991) 7: 15. doi:10.1007/BF00135634

Abstract

Hybridoma cells usually grow to fairly low cell densities in batch cultures (1–3×106 cells/ml). The reason for this is either that essential nutritional components of the medium are consumed, or that the cells produce some kind of inhibitory or toxic metabolite. This investigation presents evidence for the latter. Spent medium from cultures of hybridoma cells did not support growth of cells at lower cell densities (1–3×105 cells/ml). The ability to support cell growth could not be restored by adding additional serum, energy sources (glucose, pyruvate) or L-glutamine. Furthermore, the consumption of amino acids could not account for this growth inhibition. On the contrary, the spent medium contained a substance that inhibited cell growth. This substance or metabolite was found in a fraction eluted from a gel filtration column when spent medium was applied to the column. This substance was found in the spent medium from all hybridoma and myeloma cell lines that were tested. The molecular weight of the substance was about 5 kD. Spent medium from two hybridoma cell lines also contained a substance that was eluted in the same fraction as albumin (67 kD). It is likely that this (or these) substance(s) is responsible for the growth limitation in hybridoma cell cultures.

Key words

hybridoma cellsinhibitory or toxic metabolitesgrowth mediumgel filtration

Abbreviations

PBS

phosphate buffered saline

Copyright information

© Kluwer Academic Publishers 1991

Authors and Affiliations

  • Øystein W. Rønning
    • 1
  • Mona Schartum
    • 1
  • Andreas Winsnes
    • 2
  • Gro Lindberg
    • 2
  1. 1.Center for Industrial Research (SI)Oslo 3Norway
  2. 2.Apothekernes Laboratorium A.S.Oslo 2Norway
  3. 3.Center for Industrial Research (SI)Olso 3Norway