Avian Bioreactor Systems: A Review
Animal bioreactors are genetically modified animal systems that have the potential to reduce production cost, and improve production efficiency, of pharmaceutically relevant recombinant proteins. Several species including goats, cattle, rabbits, and avians have been genetically modified to secrete target proteins into milk, egg whites, blood, or other bodily fluids. There are several advantages associated with the use of avians as bioreactor systems. Avians have a short generation time, leading to the quick establishment of a transgenic line and high egg production. Transgenic avian systems allow for appropriate post-translational modification, as opposed to prokaryotic cell culture bioreactors, and have higher productivity than mammalian cell culture systems. Furthermore, recombinant proteins can be incorporated into egg whites and easily collected from the sterile environment of the egg. Magnum-specific expression of target genes has been achieved by use of the ovalbumin promoter, leading to a localization of the target protein into the avian egg. In this review, we discuss the current advancements, future potential, and limitations of avian bioreactor systems.
KeywordsBioreactor Avian Chicken Transgenic Ovalbumin Retroviral vector
The authors would like to acknowledge Erin Connell, Eugene Lee, and Michelle Milligan for their assistance in helping prepare this manuscript for submission.
The paper was written by RW and KL with help from EH. Figure and table were made by RW. KL oversaw the development of the paper. All authors have read and approve the final manuscript.
This work was partially supported by: (1) the United States Department of Agriculture National Institute of Food and Agriculture Grant (Project No. 2016-08413), and (2) the Ohio Agricultural Research and Development Center Research SEEDS funding (Project No. 2017-069).
Compliance with Ethical Standards
Conflict of interest
The authors of this paper declare no conflict of interest.
Research Involving Human Participants and/or Animals
This article does not contain any studies with human participants or animals performed by any of the authors.
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