scholarly journals Successful Mouse Cloning of an Outbred Strain by Trichostatin A Treatment after Somatic Nuclear Transfer

2007 ◽  
Vol 53 (1) ◽  
pp. 165-170 ◽  
Author(s):  
Satoshi KISHIGAMI ◽  
Hong-Thuy BUI ◽  
Sayaka WAKAYAMA ◽  
Kenzo TOKUNAGA ◽  
Nguyen Van THUAN ◽  
...  
Keyword(s):  
Nuclear Transfer ◽  
Trichostatin A ◽  
Outbred Strain ◽  
Somatic Nuclear Transfer

Significant improvement of mouse cloning technique by treatment with trichostatin A after somatic nuclear transfer

2006 ◽  
Vol 340 (1) ◽  
pp. 183-189 ◽  
Author(s):  
Satoshi Kishigami ◽  
Eiji Mizutani ◽  
Hiroshi Ohta ◽  
Takafusa Hikichi ◽  
Nguyen Van Thuan ◽  
...  
Keyword(s):  
Nuclear Transfer ◽  
Trichostatin A ◽  
Cloning Technique ◽  
Somatic Nuclear Transfer

Effect of Trichostatin A Treatment after Bovine Somatic Nuclear Transfer on Productions of Blastocyst and Offspring.

2008 ◽  
Vol 78 (Suppl_1) ◽  
pp. 302-303 ◽  
Author(s):  
Ken Sawai ◽  
Hiroki Hirayama ◽  
Akira Minamihashi ◽  
Tsutomu Hasizume ◽  
Satoru Moriyasu
Keyword(s):  
Nuclear Transfer ◽  
Trichostatin A ◽  
Somatic Nuclear Transfer

scholarly journals Manipulating the Mitochondrial Genome To Enhance Cattle Embryo Development

2017 ◽  
Vol 7 (7) ◽  
pp. 2065-2080 ◽  
Author(s):  
Kanokwan Srirattana ◽  
Justin C St. John
Keyword(s):  
Embryo Development ◽  
Nuclear Transfer ◽  
Bos Taurus ◽  
Trichostatin A ◽  
Donor Cell ◽  
Blastocyst Stage ◽  
Genetic Integrity ◽  
Rna Seq ◽  
Mtdna Copy Number ◽  
Donor Cells

Abstract The mixing of mitochondrial DNA (mtDNA) from the donor cell and the recipient oocyte in embryos and offspring derived from somatic cell nuclear transfer (SCNT) compromises genetic integrity and affects embryo development. We set out to generate SCNT embryos that inherited their mtDNA from the recipient oocyte only, as is the case following natural conception. While SCNT blastocysts produced from Holstein (Bos taurus) fibroblasts were depleted of their mtDNA, and oocytes derived from Angus (Bos taurus) cattle possessed oocyte mtDNA only, the coexistence of donor cell and oocyte mtDNA resulted in blastocysts derived from nondepleted cells. Moreover, the use of the reprogramming agent, Trichostatin A (TSA), further improved the development of embryos derived from depleted cells. RNA-seq analysis highlighted 35 differentially expressed genes from the comparison between blastocysts generated from nondepleted cells and blastocysts from depleted cells, both in the presence of TSA. The only differences between these two sets of embryos were the presence of donor cell mtDNA, and a significantly higher mtDNA copy number for embryos derived from nondepleted cells. Furthermore, the use of TSA on embryos derived from depleted cells positively modulated the expression of CLDN8, TMEM38A, and FREM1, which affect embryonic development. In conclusion, SCNT embryos produced by mtDNA depleted donor cells have the same potential to develop to the blastocyst stage without the presumed damaging effect resulting from the mixture of donor and recipient mtDNA.

Effect of telophase enucleation on bovine somatic nuclear transfer

2000 ◽  
Vol 54 (6) ◽  
pp. 989-998 ◽  
Author(s):  
J.-L. Liu ◽  
M.-K. Wang ◽  
Q.-Y. Sun ◽  
Z. Xu ◽  
D.-Y. Chen
Keyword(s):  
Nuclear Transfer ◽  
Somatic Nuclear Transfer

67 GENERATION OF PIGS TRANSGENIC FOR hCD59/DAF AND HUMAN THROMBOMODULIN BY SOMATIC NUCLEAR TRANSFER

2006 ◽  
Vol 18 (2) ◽  
pp. 142 ◽  
Author(s):  
B. Petersen ◽  
W. Kues ◽  
A. Lucas-Hahn ◽  
A.-L. Queisser ◽  
E. Lemme ◽  
...  
Keyword(s):  
Nuclear Transfer ◽  
Fluorescein Isothiocyanate ◽  
Coagulation Cascade ◽  
Cell Cycle Synchronization ◽  
Novel Approach ◽  
Donor Cells ◽  
Serum Gonadotropin ◽  
Somatic Nuclear Transfer ◽  
Porcine Organs

After a porcine–to–primate xenotransplantation, hyperacute rejection (HAR) destroys the transplanted organ within minutes. The HAR can be overcome either by a knockout of the gene for α–1,3–galactosyltransferase or by overexpression of human complement regulatory proteins such as hCD59 and DAF. When HAR can be controlled, the next hurdle is acute vascular rejection (AVR) which is primarily due to an incompatibility of human protein C and porcine thrombomodulin, both of which are important factors in the coagulation cascade. This incompatibility leads to thrombosis and finally to a disseminated intravascular coagulation (DIC), causing rejection of the xenotransplant. Human thrombomodulin is a good candidate gene for improving survival time of porcine organs after xenotransplantation and for overcoming AVR. Here, we transfected adult fibroblasts obtained from a double transgenic boar (hCD59/DAF) with a construct for human thrombomodulin (hTM). After selection with 800 μg/mL G418 for 14 days, cells were analyzed for integration of the construct by PCR and were visually selected for expression of the hTM–GFP fusion protein under ultraviolet light with a fluorescein isothiocyanate (FITC) filterset. A total of 39 positve clones were obtained, of which two were used in somatic nuclear transfer. Ovaries were collected from a local slaughterhouse, and follicles of 2–5 mm in diameter were aspirated. After 38–42 h of in vitro maturation oocytes were denuded and enucleated. For cell cycle synchronization, the donor cells were serum–starved for 48 h, subsequently trypsinized and placed into the perivitelline space of the enucleated oocytes. The complexes were fused and activated electrically followed by an incubation in DMAP for 3 h. Puberal gilts were synchronized by treatment with 5 mL Regumate® (Intervet UK, Ltd., Milton Keynes, Buckinghamshire, UK) for 13 days. At the end of treatment, the animals received 1000 IU pregnant mare serum gonadotropin (PMSG) intramuscularly followed by an injection of 500 IU hCG 72 h later. Cloned embryos were transferred surgically 20 h after hCG injection. Maintenance of pregnancy was supported by injections of 1000 IU PMSG on Day 11 and 500 IU hCG on Day 14 of the pregnancy. Out of 1409 reconstructed complexes, 1161 were fused (82.4%) successfully. In total, 1040 embryos were transferred to 8 recipients (∼130 embryos/gilt, range 70–162). Five of the eight recipients (62.5%) became pregnant as determined by ultrasound on Days 25, 36, and 51 and will farrow within the next weeks. These results show that cloning with triple transgenic adult donor cells is compatible with high pregnancy rates. Porcine multitransgenic organs will be used in perfusion experiments to test the effectiveness of this novel approach to overcoming the incompatibilities between the porcine and the human coagulation systems. This project is funded by the Deutsche Forschungsgemeinschaft (FOR 535). The hTM–construct was a gift of Dr. Wu which is gratefully acknowledged.

48 EFFECTS OF TRICHOSTATIN A ON DEVELOPMENT OF BOVINE SOMATIC CELL NUCLEAR TRANSFER EMBRYOS

2007 ◽  
Vol 19 (1) ◽  
pp. 142 ◽  
Author(s):  
D. Iwamoto ◽  
K. Saeki ◽  
S. Kishigami ◽  
A. Kasamatsu ◽  
A. Tatemizo ◽  
...  
Keyword(s):  
Somatic Cell ◽  
Somatic Cell Nuclear Transfer ◽  
Nuclear Transfer ◽  
Trichostatin A ◽  
Mammalian Species ◽  
Calcium Ionophore ◽  
Blastocyst Stage ◽  
Serum Starvation ◽  
Embryonic Genome ◽  
Blastocyst Rate

Although cloning by somatic cell nuclear transfer (SCNT) has been achieved in various mammalian species, its efficiency has been very low (Han et al. 2003 Theriogenology 59, 33–44). Successful cloning requires conversion from differentiated donor nuclei to embryonic nuclei after transfer of the somatic nuclei into enucleated oocytes. Reprogramming of the transferred somatic nuclei must be completed by the time when normal activation of the embryonic genome occurs (Solter 2000 Nat. Rev. Genet. 1, 199–207). Recently, both full-term development and pre-implantation development of mouse SCNT embryos were significantly enhanced by treatment with trichostatin A (TSA), an inhibitor of histone deacetylase (Kishigami et al. 2006 Biochem. Biophys. Res. Commun. 340, 183–189; Rybouchkin et al. 2006 Biol. Reprod. 74, 1083–1089). The objective of this study was to investigate the effects of TSA on the development of bovine SCNT embryos. Bovine fibroblasts were cultured under serum starvation (0.4% FCS) for 7 days and then used as donor cells. The cells were electro-fused with bovine enucleated matured oocytes, and activated with a calcium ionophore and cycloheximide. They were subsequently cultured in mSOF medium until 168 h post-activation (hpa). The NT embryos were exposed to 0 (control), 5, 50, and 500 nM TSA from the start of activation to 48 hpa. Experiments were repeated 3 times, and the data were analyzed with Fisher's PLSD test following ANOVA. The cleavage rates were the same among the groups (60 to 80%; P >0.05). However, the blastocyst rate of NT embryos treated with 50 nM TSA was higher than that of control embryos (40% vs. 19%, respectively; P < 0.05). On the other hand, the blastocyst rate was lower with 500 nM TSA than with 5 or 50 nM TSA (7% vs. 33% or 40%; P < 0.05). These data suggest that proper TSA treatment after somatic cloning improves the rate of development of bovine cloned embryos to the blastocyst stage. Further research is needed to examine whether NT embryos derived from different cell lines or types have similar susceptibility to TSA.

24 BUFFALO (BUBALUS BUBALIS) SOMATIC CELL NUCLEAR TRANSFER EMBRYOS PRODUCED FROM FROZEN–THAWED SEMEN-DERIVED SOMATIC CELLS: EFFECT OF TRICHOSTATIN A ON THE IN VITRO AND IN VIVO DEVELOPMENTAL POTENTIAL, QUALITY, AND EPIGENETIC STATUS

2015 ◽  
Vol 27 (1) ◽  
pp. 104
Author(s):  
N. L. Selokar ◽  
M. Saini ◽  
H. Agrawal ◽  
P. Palta ◽  
M. S. Chauhan ◽  
...  
Keyword(s):  
Somatic Cell ◽  
Somatic Cell Nuclear Transfer ◽  
Nuclear Transfer ◽  
Trichostatin A ◽  
Somatic Cells ◽  
Developmental Potential ◽  
Reconstructed Embryos ◽  
Frozen Semen ◽  
Significant Difference

Cryopreservation of semen allows preservation of somatic cells, which can be used for the production of progeny through somatic cell nuclear transfer (SCNT). This approach could enable restoration of valuable high-genetic-merit progeny-tested bulls, which may be dead but the cryopreserved semen is available. We have successfully produced a live buffalo calf by SCNT using somatic cells isolated from >10 year old frozen semen (Selokar et al. 2014 PLoS One 9, e90755). However, the calf survived only for 12 h, which indicates faulty reprogramming of these cells. The present study was, therefore, carried out to study the effect of treatment with trichostatin A (TSA), an epigenetic modifier, on reprogramming of these cells. Production of cloned embryos and determination of quality and level of epigenetic markers in blastocysts were performed according to the methods described previously (Selokar et al. 2014 PLoS One 9, e90755). To examine the effects of TSA (0, 50, and 75 nM), 10 separate experiments were performed on 125, 175, and 207 reconstructed embryos, respectively. The percentage data were analysed using SYSTAT 12.0 (SPSS Inc., Chicago, IL, USA) after arcsine transformation. Differences between means were analysed by one-way ANOVA followed by Fisher's least significant difference test for significance at P < 0.05. When the reconstructed buffalo embryos produced by hand-made clones were treated with 0, 50, or 75 nM TSA post-electrofusion for 10 h, the cleavage percentage (100.0 ± 0, 94.5 ± 2.3, and 96.1 ± 1.2, respectively) and blastocyst percentage (50.6 ± 2.3, 48.4 ± 2.7, and 48.1 ± 2.6, respectively), total cell number (274.9 ± 17.4, 289.1 ± 30.1, and 317.0 ± 24.2, respectively), and apoptotic index (3.4 ± 0.9, 4.5 ± 1.4, and 5.6 ± 0.7, respectively) in Day 8 blastocysts were not significantly different among different groups. The TSA treatment increased (P < 0.05) the global level of H4K5ac but not that of H3K18a in embryos treated with 50 or 75 nM TSA compared with that in controls. In contrast, the level of H3K27me3 was significantly lower (P < 0.05) in cloned embryos treated with 75 nM TSA than in embryos treated with 50 nM TSA or controls. The ultimate test of the reprogramming potential of any donor cell type is its ability to produce live offspring. To examine the in vivo developmental potential of the 0, 50, or 75 nM TSA treated embryos, we transferred Day 8 blastocysts, 2 each to 5, 6, and 5 recipients, respectively, which resulted in 2 pregnancies from 75 nM TSA treated embryos. However, one pregnancy was aborted in the first trimester and the other in the third trimester. In conclusion, TSA treatment of reconstructed embryos produced from semen-derived somatic cells alters their epigenetic status but does not improve the live birth rate. We are currently optimizing an effective strategy to improve the cloning efficiency of semen-derived somatic cells.

40 TRICHOSTATIN A TREATMENT EFFECTS ON IN VITRO DEVELOPMENT OF INTERSPECIES NUCLEAR TRANSFER CAT EMBRYOS DEPEND ON RECIPIENT CYTOPLASM SPECIES

2015 ◽  
Vol 27 (1) ◽  
pp. 113
Author(s):  
L. T. K. Do ◽  
Y. Sato ◽  
M. Taniguchi ◽  
T. Otoi
Keyword(s):  
Nuclear Transfer ◽  
Treatment Effects ◽  
Trichostatin A ◽  
Polar Body ◽  
Blastocyst Stage ◽  
Control Group ◽  
Fluid Medium ◽  
First Polar Body ◽  
Bovine Oocytes

The developmental ability of interspecies somatic cell nuclear transfer (iSCNT) embryos decreases as the taxonomic distance between the donor and recipient species increases. Treatment of cat iSCNT embryos using bovine oocytes with 50 nM of trichostatin A (TSA) improves in vitro embryonic development (Wittayarat et al. 2013 Cell. Reprogram. 15, 301–308). This study investigated whether the TSA treatment effects differ between the development of cat iSCNT embryos reconstructed with porcine and bovine oocytes. Porcine and bovine cumulus-oocyte complexes were in vitro matured for 44 h and 24 h, respectively. After cumulus cell removal, enucleation was performed by aspiration of the metaphase II plate and the first polar body using a piezo-driven pipette. A cat fibroblast cell was then injected into cytoplasm of successfully enucleated oocyte. Reconstructed cybrids were electrically activated by a single 1.5 kV cm–1 pulse for 100 µs (pig-cat embryos), or a 2.3 kV cm–1 pulse for 30 µs (cow-cat embryos). Pig-cat and cow-cat embryos were cultured in porcine zygote medium (PZM)-5 and modified synthetic oviducal fluid medium (mSOF), respectively. After electrical activation, pig-cat and cow-cat embryos were cultured in medium supplemented with 5 µg mL–1 cytochalasin B + 50 nM TSA (TSA group) or without TSA (control group), and the cow-cat embryo medium was also supplemented with 10 µg mL–1 cycloheximide. After 2 h, TSA-treated pig-cat and cow-cat embryos were incubated in medium supplemented with TSA for 22 h, followed by 48 h incubation without TSA. Pig-cat and cow-cat control embryos were cultured in medium without TSA for 70 h after activation. Then, all pig-cat and cow-cat embryos were cultured in porcine blastocyst medium (PBM) or mSOF medium supplemented with 5% fetal bovine serum, respectively, for 5 additional days. Four to seven replicates were performed for each experiment. Data were analysed using Student's t-test. For pig-cat embryos, no difference was observed in cleavage rates between both groups, but development to the blastocyst stage was higher in the pig control group (n = 147, 8.0%) than that of pig TSA group (n = 131, 0.7%; P < 0.05). In contrast, development to the blastocyst stage in cow-cat embryos was not observed in the cow control group (n = 125, 0%), but it was observed in cow TSA group (n = 136, 3.7%). These results indicate that TSA treatment effects are species-specific, but those effects remain to be clarified.

scholarly journals Trichostatin A Promotes the Development of Bovine Somatic Cell Nuclear Transfer Embryos

2011 ◽  
Vol 57 (1) ◽  
pp. 34-42 ◽  
Author(s):  
Min-Jung LEE ◽  
Se-Woong KIM ◽  
Hyun-Gi LEE ◽  
Gi-Sun IM ◽  
Byoung-Chul YANG ◽  
...  
Keyword(s):  
Somatic Cell ◽  
Somatic Cell Nuclear Transfer ◽  
Nuclear Transfer ◽  
Trichostatin A
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