Table 2. Development and mutation of zygotes cultured in different culture plates after simultaneous growth hormone receptor (GHR) and glycoprotein alpha-galactosyltransferase 1 (GGTA1) double-targeted lipofection.
Culture plate | No. of zygotes | No. (%) of zygotes developed to blastocysts | No. of blastocysts examined | No. (%) of GHR-edited blastocysts * |
No. (%) of GGTA1-edited blastocysts * |
||||
---|---|---|---|---|---|---|---|---|---|
WT | Mosaic | Average efficiency | WT | Mosaic | Average efficiency | ||||
4-well | 200 | 33 (16.5 ± 4.6) a | 18 | 18 (100) | 0 (0.0) | – | 16 (88.9) a | 2 (11.1) a | 16.3 |
25-well | 197 | 64 (32.6 ± 2.3) b | 20 | 20 (100) | 0 (0.0) | – | 11 (55.0) b | 9 (45.0) b | 9.8 |
Zona pellucida-free zygotes collected 10 h after in vitro fertilization were co-incubated with two guide RNAs (gRNAs) targeting GHR, GGTA1, and Lipofectamine 2000 (LP2000) for 5 h and cultured in 4-well or 25-well plates. Four replicates were performed. * Percentages were calculated by dividing the number of mutant blastocysts by the number of blastocysts examined. Average efficiency indicates the proportion of indel mutation events in mutant blastocysts, as determined using the Tracking of Indels by Decomposition (TIDE) analysis. a,b Values with different superscript letters are significantly different (P <0.05).