Table 1 Developmental efficiency of SCNT embryos derived from donor cells with Sfmbt2 miRNA KO or placenta-specific imprinted genes KO.

From: Loss of H3K27me3 imprinting in the Sfmbt2 miRNA cluster causes enlargement of cloned mouse placentas

Genotype of donor cells

KO allele

N**

No. of cultured embryos

No. of cleaved embryos (%)

No. of embryos transferred (ET)

No. of recipient females

No. of implantations (%/ET)

No. of live pups born (%/ET)

No. of placentas without pups (%/ET)

Wild type

–

3

167

152

(91.0)

101

4

48

(47.5)

3

(3.0)

4

(4.0)

Sfmbt2 KO

m or p

6

382

364

(94.3)

234

12

97

(41.5)

6

(2.6)

4

(1.7)

Gab1 KO

m

2

277

225

(81.2)

203

9

75

(36.9)

3

(1.5)

7

(3.4)

Sfmbt2 miRNA KO

m

2

102

88

(86.3)

75

3

27

(36.0)

5

(6.7)

2

(2.7)

Sfmbt2 miRNA/Gab1 KO

m/m

2

187

164

(87.7)

134

5

60

(44.8)

9

(6.7)

3

(2.2)

Slc38a4 KO*

m

2

84

79

(94.0)

40

2

21

(52.5)

3

(7.5)

1

(2.5)

Wild type*

–

3

201

194

(96.5)

179

9

110

(61.5)

15

(8.4)

3

(1.7)

  1. *Embryos injected with Kdm4d mRNA instead of treatment with trichostatin A/latrunculin A. Data for the wild type are those reported by Matoba et al.16.
  2. **Number of experimental replicates.