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Transgene Expression in Cultured Cells Using Unpurified Recombinant Adeno-Associated Viral Vectors
Published on: October 20, 2023
Construction of an Arxula adeninivorans host-vector system based on trp1 complementation
Gerhard Steinborn1, Thomas Wartmann, Gerd Gellissen
1Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung, Corrensstr. 3, D-06466 Gatersleben, Germany.
Journal of Biotechnology
|August 29, 2006
Summary
A novel host/vector system using Arxula adeninivorans was developed for efficient recombinant protein production. This system achieved high levels of alpha-amylase secretion into the culture medium.
Area of Science:
- Biotechnology
- Microbial Engineering
- Molecular Biology
Background:
- Development of robust microbial expression systems is crucial for industrial enzyme production.
- Arxula adeninivorans offers potential as a eukaryotic host for recombinant protein expression.
Purpose of the Study:
- To construct and characterize a host/vector expression system in Arxula adeninivorans.
- To evaluate the expression and secretion of a heterologous gene (alpha-amylase) using this system.
Main Methods:
- Construction of an auxotrophic Arxula adeninivorans mutant (Delta atrp1).
- Transformation with a plasmid containing the selection marker and expression cassette.
- Fermentation trials to assess alpha-amylase production.
Main Results:
- A mitotically stable host strain with a single chromosomal copy of the integrated DNA was generated.
- Maximal alpha-amylase levels of approximately 300 nkat ml(-1) were achieved after 72 hours.
- Over 95% of the recombinant alpha-amylase was secreted into the culture medium.
Conclusions:
- The developed Arxula adeninivorans expression system is effective for high-level secretion of recombinant proteins.
- This system holds promise for the biotechnological production of enzymes like alpha-amylase.
