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In Vivo Bac-Based Gene Delivery Towards Murine Pancreatic Parenchyma Confers Sustained Expression of Gene of Interest

Overview
Journal Int J Mol Sci
Publisher MDPI
Date 2019 Jun 29
PMID 31247905
Citations 1
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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 Bac (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.

Citing Articles

Bac-Based Non-Viral In Vivo Gene Delivery Useful for Production of Genetically Modified Animals and Organs.

Sato M, Inada E, Saitoh I, Watanabe S, Nakamura S Pharmaceutics. 2020; 12(3).

PMID: 32204422 PMC: 7151002. DOI: 10.3390/pharmaceutics12030277.

References
1.
Bauser C, Elick T, Fraser M . Proteins from nuclear extracts of two lepidopteran cell lines recognize the ends of TTAA-specific transposons piggyBac and tagalong. Insect Mol Biol. 1999; 8(2):223-30. DOI: 10.1046/j.1365-2583.1999.820223.x. View

2.
Yant S, Meuse L, Chiu W, Ivics Z, Izsvak Z, Kay M . Somatic integration and long-term transgene expression in normal and haemophilic mice using a DNA transposon system. Nat Genet. 2000; 25(1):35-41. DOI: 10.1038/75568. View

3.
Somiari S, Drabick J, GILBERT R, Heller R, Jaroszeski M, Malone R . Theory and in vivo application of electroporative gene delivery. Mol Ther. 2000; 2(3):178-87. DOI: 10.1006/mthe.2000.0124. View

4.
Shifrin A, Auricchio A, Yu Q, Wilson J, Raper S . Adenoviral vector-mediated insulin gene transfer in the mouse pancreas corrects streptozotocin-induced hyperglycemia. Gene Ther. 2001; 8(19):1480-9. DOI: 10.1038/sj.gt.3301544. View

5.
Wang A, Peng P, Ehrhardt A, Storm T, Kay M . Comparison of adenoviral and adeno-associated viral vectors for pancreatic gene delivery in vivo. Hum Gene Ther. 2004; 15(4):405-13. DOI: 10.1089/104303404322959551. View