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The disadvantage of the lengthy process of genetically modifying an entire animal could be circumvented with somatic transduction of only the mammary epithelium with recombinant, replication-defective viruses. While other viral vectors offer very limited scope for this approach, vectors based on adeno-associated virus (AAV) appear to be ideal candidates because AAV is helper-dependent, does not induce a strong immune response and has no association with disease. Here, we sought to test the suitability of recombinant AAV (rAAV) for biopharming. Using reporter genes, we showed that injected rAAV efficiently transduced mouse mammary cells. When rAAV encoding human myelin basic protein (hMBP) was injected into the mammary glands of mice and rabbits, this resulted in the expression of readily detectable protein levels of up to 0.5\u2009g\/L in the milk. Furthermore we demonstrated that production of hMBP persisted over extended periods and that protein expression could be renewed in a subsequent lactation by re-injection of rAAV into a previously injected mouse gland.<\/jats:p>","DOI":"10.1038\/srep15115","type":"journal-article","created":{"date-parts":[[2015,10,14]],"date-time":"2015-10-14T10:43:36Z","timestamp":1444819416000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Adeno-associated-virus-mediated transduction of the mammary gland enables sustained production of recombinant proteins in milk"],"prefix":"10.1038","volume":"5","author":[{"given":"Stefan","family":"Wagner","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rosemary","family":"Thresher","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ross","family":"Bland","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"G\u00f6tz","family":"Laible","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2015,10,14]]},"reference":[{"key":"BFsrep15115_CR1","doi-asserted-by":"publisher","first-page":"107","DOI":"10.1016\/j.cimid.2007.11.005","volume":"32","author":"LM Houdebine","year":"2009","unstructured":"Houdebine, L. 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