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Open AccessCommunication

In Vivo Piggybac-Based Gene Delivery towards Murine Pancreatic Parenchyma Confers Sustained Expression of Gene of Interest

1
Section of Gene Expression Regulation, Frontier Science Research Center, Kagoshima University, Kagoshima 890-8544, Japan
2
Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8544, Japan
3
Division of Pediatric Dentistry, Department of Oral Health Sciences, Course for Oral Life Science, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan
4
Division of Biomedical Engineering, National Defense Medical College Research Institute, Saitama 359-8513, Japan
5
Animal Genome Unit, Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization (NARO), 2 Ikenodai, Tsukuba, Ibaraki 305-0901, Japan
*
Author to whom correspondence should be addressed.
Int. J. Mol. Sci. 2019, 20(13), 3116; https://doi.org/10.3390/ijms20133116
Received: 28 May 2019 / Revised: 24 June 2019 / Accepted: 25 June 2019 / Published: 26 June 2019
(This article belongs to the Collection Feature Papers in Molecular Biology)
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PDF [2403 KB, uploaded 26 June 2019]
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Abstract

The pancreas is a glandular organ that functions in the digestive system and endocrine system of vertebrates. The most common disorders involving the pancreas are diabetes, pancreatitis, and pancreatic cancer. In vivo gene delivery targeting the pancreas is important for preventing or curing such diseases and for exploring the biological function of genes involved in the pathogenesis of these diseases. Our previous experiments demonstrated that adult murine pancreatic cells can be efficiently transfected by exogenous plasmid DNA following intraparenchymal injection and subsequent in vivo electroporation using tweezer-type electrodes. Unfortunately, the induced gene expression was transient. Transposon-based gene delivery, such as that facilitated by piggyBac (PB), is known to confer stable integration of a gene of interest (GOI) into host chromosomes, resulting in sustained expression of the GOI. In this study, we investigated the use of the PB transposon system to achieve stable gene expression when transferred into murine pancreatic cells using the above-mentioned technique. Expression of the GOI (coding for fluorescent protein) continued for at least 1.5 months post-gene delivery. Splinkerette-PCR-based analysis revealed the presence of the consensus sequence TTAA at the junctional portion between host chromosomes and the transgenes; however, this was not observed in all samples. This plasmid-based PB transposon system enables constitutive expression of the GOI in pancreas for potential therapeutic and biological applications. View Full-Text
Keywords: pancreas; piggyBac transposon; in vivo electroporation; intraparenchymal injection; gene delivery; persisted expression of transgenes; Splinkerette-PCR; chromosomal integration pancreas; piggyBac transposon; in vivo electroporation; intraparenchymal injection; gene delivery; persisted expression of transgenes; Splinkerette-PCR; chromosomal integration
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Sato, M.; Inada, E.; Saitoh, I.; Nakamura, S.; Watanabe, S. In Vivo Piggybac-Based Gene Delivery towards Murine Pancreatic Parenchyma Confers Sustained Expression of Gene of Interest. Int. J. Mol. Sci. 2019, 20, 3116.

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