Expression of enhanced green fluorescent protein in porcine- and bovine-cloned embryos following interspecies somatic cell nuclear transfer of fibroblasts transfected by retrovirus vector

2007 ◽  
Vol 74 (12) ◽  
pp. 1538-1547 ◽  
Author(s):  
Sang Jun Uhm ◽  
Mukesh Kumar Gupta ◽  
Teoan Kim ◽  
Hoon Taek Lee
2008 ◽  
Vol 78 (Suppl_1) ◽  
pp. 92-92
Author(s):  
So Gun Hong ◽  
Goo Jang ◽  
Min Kyu Kim ◽  
Hyun Ju Oh ◽  
Jung Eun Park ◽  
...  

2008 ◽  
Vol 53 (7) ◽  
pp. 1035-1039 ◽  
Author(s):  
ZhongHua Liu ◽  
Jun Song ◽  
ZhenKun Wang ◽  
JiangTian Tian ◽  
QingRan Kong ◽  
...  

2004 ◽  
Vol 16 (3) ◽  
pp. 315 ◽  
Author(s):  
P. M. Kragh ◽  
G. Vajta ◽  
T. J. Corydon ◽  
S. Purup ◽  
L. Bolund ◽  
...  

Recently, a zona-free technique for bovine somatic cell nuclear transfer (NT) with no requirement for micromanipulation (i.e. hand-made cloning (HMC)) has been described. The present study demonstrates the application of the HMC technique in the production of transgenic porcine blastocysts. In vitro-matured zona-free porcine oocytes were bisected manually using a microblade and halves containing no chromatin (i.e. the cytoplasts) were selected. Two cytoplasts were electrofused with one transgenic fibroblast expressing enhanced green fluorescent protein and reconstructed embryos were activated in calcium ionophore (A23187) followed by 6-dimethylaminopurine. Subsequently, embryos were cultured in NCSU-23 medium supplemented with 4 mg mL–1 bovine serum albumin for 7 days. In five replicates, 93.0 ± 7.0% (mean ± s.e.m.) of attempted reconstructed embryos fused and survived activation (31/31, 15/23, 28/28, 37/37 and 28/28). On Day 7 after activation, the respective blastocyst rates (per successfully reconstructed embryos) were 6% (2/31), 7% (1/15), 7% (2/28), 3% (1/37) and 7% (2/28), resulting in an average of 6.0 ± 0.8%. Enhanced green fluorescent protein was expressed in all cells of all eight developing blastocysts. Efforts are now directed towards the production of offspring from such transgenic NT blastocysts.


2001 ◽  
Vol 12 (2) ◽  
pp. 173-181 ◽  
Author(s):  
Kwang-Wook Park ◽  
Hee-Tae Cheong ◽  
Liangxue Lai ◽  
Gi-Sun Im ◽  
Birgit Kühholzer ◽  
...  

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