Biotechnology Letters

, Volume 23, Issue 5, pp 359–364 | Cite as

Cell size as a tool to predict the production of recombinant protein by the insect-cell baculovirus expression system

  • Laura A. Palomares
  • Juan Carlos Pedroza
  • Octavio T. Ramírez


The increase of Sf9 cell diameter after infection with a recombinant baculovirus encoding VP8 protein of rotavirus can be used to predict culture productivity. A direct proportional correlation between the increase in cell size and VP8 concentration was obtained when manipulating selected medium components. Only yeast extract increased (38%) VP8 concentration, while fetal bovine serum increased (55%) the maximum cell concentration. An inexpensive and simplified culture media can thus be designed without detriment to protein yields.

baculovirus culture monitoring insect cell size metabolism recombinant protein 


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Copyright information

© Kluwer Academic Publishers 2001

Authors and Affiliations

  • Laura A. Palomares
    • 1
  • Juan Carlos Pedroza
    • 2
  • Octavio T. Ramírez
    • 1
  1. 1.Departamento de Bioingeniería, Instituto de BiotecnologíaUniversidad Nacional Autónoma de MéxicoCuernavaca MorelosMéxico
  2. 2.Centro de Investigación en BiotecnologíaUniversidad Autónoma del Estado de MorelosMéxico

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