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- Title
PhiC31-based Site-Specific Transgenesis System for Production of Transgenic Bovine Embryos by Somatic Cell Nuclear Transfer and Intracytoplasmic Sperm Injection.
- Authors
Hadi Sekhavati, Mohammad; Hosseini, Sayed Morteza; Tahmoorespur, Mojtaba; Ghaedi, Kamran; Jafarpour, Farnoosh; Hajian, Mehdi; Dormiani, Kyanoosh; Nasr-Esfahani, Mohammad Hossain
- Abstract
Objective: The Streptomyces phage phiC31 integrase offers a sequence-specific method of transgenesis with a robust long-term gene expression. PhiC31 has been successfully developed in a variety of tissues and organs for purpose of in vivo gene therapy. The objective of the present experiment was to evaluate PhiC31-based site-specific transgenesis system for production of transgenic bovine embryos by somatic cell nuclear transfer and intracytoplasmic sperm injection. Materials and Methods: In this experimental study, the application of phiC31 integrase system was evaluated for generating transgenic bovine embryos by somatic cell nuclear transfer (SCNT) and sperm mediated gene transfer (SMGT) approaches. Results: PhiC31 integrase mRNA and protein was produced in vitro and their functionality was confirmed. Seven phiC31 recognizable bovine pseudo attachment sites of phage (attP) sites were considered for evaluation of site specific recombination. The accuracy of these sites was validated in phic31 targeted bovine fibroblasts using polymerase chain reaction (PCR) and sequencing. The efficiency and site-specificity of phiC31 integrase system was also confirmed in generated transgenic bovine embryo which successfully obtained using SCNT and SMGT technique. Conclusion: The results showed that both SMGT and SCNT-derived embryos were enhanced green fluorescent protein (EGFP) positive and phiC31 integrase could recombine the reporter gene in a site specific manner. These results demonstrate that attP site can be used as a proper location to conduct site directed transgenesis in both mammalian cells and embryos in phiC31 integrase system when even combinaed to SCNT and intracytoplasmic sperm injection (ICSI) method.
- Subjects
SOMATIC cell nuclear transfer; INTRACYTOPLASMIC sperm injection; INTEGRASES; GENETIC transformation; MESSENGER RNA; REPORTER genes; GREEN fluorescent protein; TRANSGENIC animals
- Publication
Cell Journal (Yakhteh), 2018, Vol 20, Issue 1, p98
- ISSN
2228-5806
- Publication type
Article
- DOI
10.22074/cellj.2018.4385.