Original Article
Copyright ©2010 Baishideng Publishing Group Co.
World J Stem Cells. Dec 26, 2010; 2(6): 127-140
Published online Dec 26, 2010. doi: 10.4252/wjsc.v2.i6.127
Table 2 Comparative targeting efficiencies of R1 and HM-1 mouse embryonic stem cells
ParametersCell line (passage number)
R1 (p12)
HM-1 (p21)
Amaxa
BioRadAmaxa
BioRad
Electroporation programA231A241A301A231A241A301
Cell number3 × 1063 × 1073 × 1063 × 107
DNA concentration (μg)510510
Number of selected clones12019216835683616816824384744
Positive clones after 1st PCR screen3101115395401524
Percentage (%)2.55.26.54.24.72.92.403.93.2
Positive clones after 2nd PCR screen3101115395401524
Homologous recombination confirmed by Southern blot analysis
Clone number3910729440514
Efficiency (%)2.54.7623.52.42.401.31.9
Transfection efficiency
TransientNo data on Amaxa system91% ± 6.1%No data on Amaxa system75% ± 4.2%
StableNo data on Amaxa system34% ± 2.9%No data on Amaxa system25% ± 5.3%