Efficient production of antibody fragments by the filamentous fungus trichoderma reesei

Eini Nyyssönen, Merja Penttilä, Anu Harkki, Anu Saloheimo, Jonathan K C Knowles, Sirkka Keränen

    Research output: Contribution to journalArticleScientificpeer-review

    97 Citations (Scopus)

    Abstract

    We have engineered the filamentous fungus Trichoderma reesei to assemble and secrete immunologically authentic engineered Fab antibody fragments into the culture medium. A major improvement in yield was achieved by fusing the heavy Fd chain to the T. reesei cellulase, CBHI. The yields of secreted, immunologically active Fab and CBHI-Fab fusion were 1 mg/1 and 150 mg/1, respectively. The Fab fragment can be released from the fusion protein CBHI-Fab by an extracellular T. reesei protease. There was no detectable difference in affinity for the antigen between the engineered Fab and the idiotypic antibody.

    Original languageEnglish
    Pages (from-to)591-595
    Number of pages5
    JournalBio/Technology
    Volume11
    Issue number5
    DOIs
    Publication statusPublished - 1 Jan 1993
    MoE publication typeA1 Journal article-refereed

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