An inducible expression system for the production of human lactoferrin in Aspergillus nidulans

Pauline P. Ward, Gregory S. May, Denis R. Headon, Orla M. Conneely

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

The production and secretion of human lactoferrin (hLF) in Aspergillus nidulans is described. The hLF cDNA was expressed under the control of the strong ethanol-inducible alcohol dehydrogenase (alcA) promoter. Recombinant hLF (rehLF) is produced at levels up to 5 μg/ml. Approximately 30% of the re-hLF produced in this system is secreted into the growth medium. The re-hLF is indistinguishable from native hLF with respect to size and immunoreactivity. Furthermore, re-hLF is functional by the criterion of iron-binding capacity. The A. nidulans expression system offers an inexpensive, convenient method for the controlled production of mg amounts of biologically active mammalian glycoproteins.

Original languageEnglish (US)
Pages (from-to)219-223
Number of pages5
JournalGene
Volume122
Issue number1
DOIs
StatePublished - Dec 1 1992

Keywords

  • Recombinant DNA
  • alcA promoter
  • filamentous fungi
  • functional assay
  • iron-binding glycoprotein
  • secretion

ASJC Scopus subject areas

  • Genetics

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