Jiangsu Key Laboratory of Xenotransplantation/Key Laboratory of Targeted Intervention of Cardiovascular Disease/Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University, Nanjing 211166, China
Using a data set from our laboratory, we assessed the effects of several factors on pig cloning efficiency. The results demonstrated that cells at high confluence (>90%) used as donor cell resulted in higher pregnancy rate, delivery rate and overall cloning efficiency (number of live offspring born per reconstructed embryo transferred to recipients) compared with the cells at 60% to 79% confluence and 80% to 89% confluence. Cells with four, five and six passages compromised the pregnancy and delivery rates compared with first passage cells. The number of blastocysts transferred by somatic cell nuclear transfer (SCNT) did not significantly affect the cloning efficiency, but transfer of blastocyst derived from in vitro culture 5 d after SCNT achieved a significantly higher pregnancy rate compared with one to two cell SCNT embryos from overnight culture. The highest pregnancy rate, delivery rate and the largest litter size were obtained when Bama Miniature pig fibroblasts were used as donor cells and Landrace/Yorkshire hybrid gilts were used as recipients. Recipients treated with chemicals for estrus synchronization had higher pregnancy rates compared with untreated recipients. Our data might be helpful for improving SCNT efficiency in pigs.
LLai, R S Prather. Creating genetically modified pigs by using nuclear transfer. Reproductive Biology and Endocrinology, 2003, 1(1): 82 https://doi.org/10.1186/1477-7827-1-82
pmid: 14613542
2
K SAhn, Y J Kim, M Kim, B HLee, S YHeo, M JKang, Y KKang, J WLee, K KLee, J HKim, W GNho, S SHwang, J SWoo, J KPark, S BPark, HShim. Resurrection of an alpha-1,3-galactosyltransferase gene-targeted miniature pig by recloning using postmortem ear skin fibroblasts. Theriogenology, 2011, 75(5): 933–939 https://doi.org/10.1016/j.theriogenology.2010.11.001
pmid: 21196043
3
NFan, J Chen, ZShang, HDou, G Ji, QZou, LWu, L He, FWang, KLiu, N Liu, JHan, QZhou, D Pan, DYang, BZhao, Z Ouyang, ZLiu, YZhao, L Lin, CZhong, QWang, S Wang, YXu, JLuan, Y Liang, ZYang, JLi, C Lu, GVajta, ZLi, H Ouyang, HWang, YWang, Y Yang, ZLiu, HWei, Z Luan, M AEsteban, HDeng, H Yang, DPei, NLi, G Pei, LLiu, YDu, L Xiao, LLai. Piglets cloned from induced pluripotent stem cells. Cell Research, 2013, 23(1): 162–166 https://doi.org/10.1038/cr.2012.176
pmid: 23247628
4
LLai, D Kolber-Simonds, K WPark, H TCheong, J LGreenstein, G SIm, MSamuel, ABonk, A Rieke, B NDay, C NMurphy, D BCarter, R JHawley, R SPrather. Production of alpha-1,3-galactosyltransferase knockout pigs by nuclear transfer cloning. Science, 2002, 295(5557): 1089–1092 https://doi.org/10.1126/science.1068228
pmid: 11778012
5
J JRamsoondar, ZMacháty, CCosta, B LWilliams, W LFodor, K RBondioli. Production of alpha 1,3-galactosyltransferase-knockout cloned pigs expressing human alpha 1,2-fucosylosyltransferase. Biology of Reproduction, 2003, 69(2): 437–445 https://doi.org/10.1095/biolreprod.102.014647
pmid: 12672664
6
JBetthauser, E Forsberg, MAugenstein, LChilds, KEilertsen, JEnos, T Forsythe, PGolueke, GJurgella, RKoppang, TLesmeister, KMallon, GMell, P Misica, MPace, MPfister-Genskow, NStrelchenko, GVoelker, SWatt, S Thompson, MBishop. Production of cloned pigs from in vitro systems. Nature Biotechnology, 2000, 18(10): 1055–1059 https://doi.org/10.1038/80242
pmid: 11017042
7
AOnishi, M Iwamoto, TAkita, SMikawa, KTakeda, TAwata, HHanada, A CPerry. Pig cloning by microinjection of fetal fibroblast nuclei. Science, 2000, 289(5482): 1188–1190 https://doi.org/10.1126/science.289.5482.1188
pmid: 10947985
8
I APolejaeva, S HChen, T DVaught, R LPage, JMullins, SBall, Y Dai, JBoone, SWalker, D LAyares, AColman, K HCampbell. Cloned pigs produced by nuclear transfer from adult somatic cells. Nature, 2000, 407(6800): 86–90 https://doi.org/10.1038/35024082
pmid: 10993078
9
NKlymiuk, B Aigner, GBrem, EWolf. Genetic modification of pigs as organ donors for xenotransplantation. Molecular Reproduction and Development, 2010, 77(3): 209–221
pmid: 19998476
10
R SPrather, M Shen, YDai. Genetically modified pigs for medicine and agriculture. Biotechnology & Genetic Engineering Reviews, 2008, 25: 245–265
pmid: 21412358
11
MSchmidt, P M Kragh, J Li, YDu, LLin, Y Liu, I BBøgh, K DWinther, GVajta, HCallesen. Pregnancies and piglets from large white sow recipients after two transfer methods of cloned and transgenic embryos of different pig breeds. Theriogenology, 2010, 74(7): 1233–1240 https://doi.org/10.1016/j.theriogenology.2010.05.026
pmid: 20688371
K MWhitworth, R SPrather. Somatic cell nuclear transfer efficiency: how can it be improved through nuclear remodeling and reprogramming? Molecular Reproduction and Development, 2010, 77(12): 1001–1015 https://doi.org/10.1002/mrd.21242
pmid: 20931660
14
XYang, S L Smith, X C Tian, H A Lewin, J P Renard, T Wakayama. Nuclear reprogramming of cloned embryos and its implications for therapeutic cloning. Nature Genetics, 2007, 39(3): 295–302 https://doi.org/10.1038/ng1973
pmid: 17325680
15
JZhao, J Whyte, R SPrather. Effect of epigenetic regulation during swine embryogenesis and on cloning by nuclear transfer. Cell and Tissue Research, 2010, 341(1): 13–21 https://doi.org/10.1007/s00441-010-1000-x
pmid: 20563602
16
X JYin, T Tani, IYonemura, MKawakami, KMiyamoto, RHasegawa, YKato, Y Tsunoda. Production of cloned pigs from adult somatic cells by chemically assisted removal of maternal chromosomes. Biology of Reproduction, 2002, 67(2): 442–446 https://doi.org/10.1095/biolreprod67.2.442
pmid: 12135879
17
BKühholzer, R J Hawley, L Lai, DKolber-Simonds, R SPrather. Clonal lines of transgenic fibroblast cells derived from the same fetus result in different development when used for nuclear transfer in pigs. Biology of Reproduction, 2001, 64(6): 1695–1698 https://doi.org/10.1095/biolreprod64.6.1695
pmid: 11369597
18
ANakayama, M Sato, MShinohara, SMatsubara, TYokomine, EAkasaka, MYoshida, STakao. Efficient transfection of primarily cultured porcine embryonic fibroblasts using the Amaxa Nucleofection system. Cloning and Stem Cells, 2007, 9(4): 523–534 https://doi.org/10.1089/clo.2007.0021
pmid: 18154513
19
GVajta, Y Zhang, ZMacháty. Somatic cell nuclear transfer in pigs: recent achievements and future possibilities. Reproduction, Fertility, and Development, 2007, 19(2): 403–423 https://doi.org/10.1071/RD06089
pmid: 17257528
20
O JKoo, H J Park, D K Kwon, J T Kang, G Jang, B CLee. Effect of recipient breed on delivery rate of cloned miniature pig. Zygote, 2009, 17(3): 203–207 https://doi.org/10.1017/S0967199409005267
pmid: 19393119
21
MKurome, L Geistlinger, BKessler, VZakhartchenko, NKlymiuk, AWuensch, ARichter, ABaehr, KKraehe, KBurkhardt, KFlisikowski, TFlisikowska, CMerkl, MLandmann, MDurkovic, ATschukes, SKraner, DSchindelhauer, TPetri, AKind, H Nagashima, ASchnieke, RZimmer, EWolf. Factors influencing the efficiency of generating genetically engineered pigs by nuclear transfer: multi-factorial analysis of a large data set. BMC Biotechnology, 2013, 13(1): 43 https://doi.org/10.1186/1472-6750-13-43
pmid: 23688045
22
KKaeoket. Study on the oestrous synchronization in gilts by using progestin altrenogest and hCG: its effect on the follicular development, ovulation time and subsequent reproductive performance. Reproduction in Domestic Animals, 2008, 43(1): 127–129 https://doi.org/10.1111/j.1439-0531.2007.00901.x
pmid: 18069947
23
K HCampbell, P Loi, P JOtaegui, IWilmut. Cell cycle co-ordination in embryo cloning by nuclear transfer. Reviews of Reproduction, 1996, 1(1): 40–46 https://doi.org/10.1530/ror.0.0010040
pmid: 9414437
24
A CBoquest, B N Day, R S Prather. Flow cytometric cell cycle analysis of cultured porcine fetal fibroblast cells. Biology of Reproduction, 1999, 60(4): 1013–1019 https://doi.org/10.1095/biolreprod60.4.1013
pmid: 10084979
25
S LMcElroy, J H Kim, S Kim, Y WJeong, E GLee, S MPark, M SHossein, O JKoo, M DAbul Hashem, GJang, S K Kang, B C Lee, W S Hwang. Effects of culture conditions and nuclear transfer protocols on blastocyst formation and mRNA expression in pre-implantation porcine embryos. Theriogenology, 2008, 69(4): 416–425 https://doi.org/10.1016/j.theriogenology.2007.10.010
pmid: 18055008
26
KMiyoshi, S Inoue, THimaki, SMikawa, MYoshida. Birth of cloned miniature pigs derived from somatic cell nuclear transferred embryos activated by ultrasound treatment. Molecular Reproduction and Development, 2007, 74(12): 1568–1574 https://doi.org/10.1002/mrd.20730
pmid: 17427963
27
TWakai, S Sugimura, KYamanaka, MKawahara, HSasada, HTanaka, AAndo, E Kobayashi, ESato. Production of viable cloned miniature pig embryos using oocytes derived from domestic pig ovaries. Cloning and Stem Cells, 2008, 10(2): 249–262 https://doi.org/10.1089/clo.2007.0045
pmid: 18352818
28
S CWalker, T Shin, G MZaunbrecher, J ERomano, G AJohnson, F WBazer, J APiedrahita. A highly efficient method for porcine cloning by nuclear transfer using in vitro-matured oocytes. Cloning and Stem Cells, 2002, 4(2): 105–112 https://doi.org/10.1089/153623002320253283
pmid: 12171703
29
J BCibelli, S L Stice, P J Golueke, J J Kane, J Jerry, CBlackwell, F APonce de León, J MRobl. Cloned transgenic calves produced from nonquiescent fetal fibroblasts. Science, 1998, 280(5367): 1256–1258 https://doi.org/10.1126/science.280.5367.1256
pmid: 9596577
30
IWilmut, A E Schnieke, J McWhir, A JKind, K HCampbell. Viable offspring derived from fetal and adult mammalian cells. Nature, 1997, 385(6619): 810–813 https://doi.org/10.1038/385810a0
pmid: 9039911
31
B PEnright, B S Jeong, X Yang, X CTian. Epigenetic characteristics of bovine donor cells for nuclear transfer: levels of histone acetylation. Biology of Reproduction, 2003, 69(5): 1525–1530 https://doi.org/10.1095/biolreprod.103.019950
pmid: 12801976
R SDeshmukh, O Østrup, EØstrup, MVejlsted, HNiemann, ALucas-Hahn, BPetersen, JLi, H Callesen, PHyttel. DNA methylation in porcine preimplantation embryos developed in vivo and produced by in vitro fertilization, parthenogenetic activation and somatic cell nuclear transfer. Epigenetics, 2011, 6(2): 177–187 https://doi.org/10.4161/epi.6.2.13519
pmid: 20935454
34
SBork, S Pfister, HWitt, PHorn, B Korn, A DHo, WWagner. DNA methylation pattern changes upon long-term culture and aging of human mesenchymal stromal cells. Aging Cell, 2010, 9(1): 54–63 https://doi.org/10.1111/j.1474-9726.2009.00535.x
pmid: 19895632
35
ANoer, A L Sørensen, A C Boquest, P Collas. Stable CpG hypomethylation of adipogenic promoters in freshly isolated, cultured, and differentiated mesenchymal stem cells from adipose tissue. Molecular Biology of the Cell, 2006, 17(8): 3543–3556 https://doi.org/10.1091/mbc.E06-04-0322
pmid: 16760426
36
MWagner, K Schmelz, BDörken, ITamm. Epigenetic and genetic analysis of the survivin promoter in acute myeloid leukemia. Leukemia Research, 2008, 32(7): 1054–1060 https://doi.org/10.1016/j.leukres.2007.11.013
pmid: 18206228
37
BPetersen, A Lucas-Hahn, MOropeza, NHornen, ELemme, PHassel, A LQueisser, HNiemann. Development and validation of a highly efficient protocol of porcine somatic cloning using preovulatory embryo transfer in peripubertal gilts. Cloning and Stem Cells, 2008, 10(3): 355–362 https://doi.org/10.1089/clo.2008.0026
pmid: 18729768
38
C HRim, Z Fu, LBao, HChen, D Zhang, QLuo, H CRi, HHuang, ZLuan, Y Zhang, CCui, LXiao, U M Jong. The effect of the number of transferred embryos, the interval between nuclear transfer and embryo transfer, and the transfer pattern on pig cloning efficiency. Animal Reproduction Science, 2013, 143(1-4): 91–96 https://doi.org/10.1016/j.anireprosci.2013.10.004
pmid: 24238725
39
AMaheshwari, M Hamilton, SBhattacharya. Should we be promoting embryo transfer at blastocyst stage? Reproductive Biomedicine Online, 2016, 32(2): 142–146 https://doi.org/10.1016/j.rbmo.2015.09.016
pmid: 26673100