20 research outputs found
59 SYNCHRONIZATION OF CELL CYCLE STAGE OF BUFFALO (BUBALUS BUBALIS) FETAL FIBROBLAST CELLS BY DIFFERENT TREATMENTS
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Not AvailableThe possibility of producing interspecies handmade cloned (iHMC) embryos by nuclear transfer from donor cells of cattle, goat and rat using buffalo oocytes as recipient cytoplasts was explored. Zona-free buffalo oocytes were enucleated by protrusion cone-guided bisection with a microblade. After electrofusion with somatic cells, reconstructed oocytes were activated by calcimycin A23187, treated with 6-dimethylaminopurine and were cultured in K-RVCL-50® medium for 8 days. Although the cleavage rate was not significantly different when buffalo, cattle, goat or rat cells were used as donor nuclei (74.6 ± 3.8, 82.8 ± 5.3, 86.0 ± 4.9 and 82.3 ± 3.6%, respectively), the blastocyst rate was significantly higher (P < 0.01) for buffalo (51.4 ± 2.6) than for cattle (3.5 ± 1.0) or the goat (2.2 ± 0.9), whereas none of the embryos crossed the 32-cell stage when rat cells were used. However, the total cell number was similar for buffalo–buffalo (175.0 ± 5.07) and cattle–buffalo embryos (178.0 ± 11.84). Following transfer of 3 buffalo–buffalo embryos each to 6 recipients, 3 were found to be pregnant, though the pregnancies were not carried to full term. These results suggest that interspecies blastocyst stage embryos can be produced by iHMC using buffalo cytoplasts and differentiated somatic cells from cattle and goat and that the source of donor nucleus affects the developmental competence of interspecies embryos.ICA
Hope for Restoration of Dead Valuable Bulls through Cloning Using Donor Somatic Cells Isolated from Cryopreserved Semen
Semen parameters and fertility potency of a cloned water buffalo (Bubalus bubalis) bull produced from a semen-derived epithelial cell
Not Available
Not AvailableSomatic cell nuclear transfer (SCNT) technology provides an opportunity to multiply superior animals
that could speed up dissemination of favorable genes into the population. In the present study, we
attempted to reproduce a superior breeding bull of Murrah buffalo, the best dairy breed of buffalo,
using donor cells that were established from tail-skin biopsy and seminal plasma. We studied several
parameters such as cell cycle stages, histone modifcations (H3K9ac and H3K27me3) and expression of
developmental genes in donor cells to determine their SCNT reprogramming potentials. We successfully
produced the cloned bull from an embryo that was produced from the skin-derived cell. Growth,
blood hematology, plasma biochemistries, and reproductive organs of the produced cloned bull were
found normal. Subsequently, the bull was employed for semen production. Semen parameters such
as CASA (Computer Assisted Semen Analysis) variables and in vitro fertilizing ability of sperms of the
cloned bull were found similar to non-cloned bulls, including the donor bull. At present, we have 12 live
healthy progenies that were produced using artificial insemination of frozen semen of the cloned bull,
which indicate that the cloned bull is fertile and can be utilized in the buffalo breeding schemes. Taken
together, we demonstrate that SCNT can be used to reproduce superior buffalo bulls.Not Availabl
Not Available
Not AvailableSomatic cell nuclear transfer (SCNT) technology provides an opportunity to multiply superior animals
that could speed up dissemination of favorable genes into the population. In the present study, we
attempted to reproduce a superior breeding bull of Murrah buffalo, the best dairy breed of buffalo,
using donor cells that were established from tail-skin biopsy and seminal plasma. We studied several
parameters such as cell cycle stages, histone modifications (H3K9ac and H3K27me3) and expression of
developmental genes in donor cells to determine their SCNT reprogramming potentials. We successfully
produced the cloned bull from an embryo that was produced from the skin-derived cell. Growth,
blood hematology, plasma biochemistries, and reproductive organs of the produced cloned bull were
found normal. Subsequently, the bull was employed for semen production. Semen parameters such
as CASA (Computer Assisted Semen Analysis) variables and in vitro fertilizing ability of sperms of the
cloned bull were found similar to non-cloned bulls, including the donor bull. At present, we have 12 live
healthy progenies that were produced using artificial insemination of frozen semen of the cloned bull,
which indicate that the cloned bull is fertile and can be utilized in the buffalo breeding schemes. Taken
together, we demonstrate that SCNT can be used to reproduce superior buffalo bulls.Not Availabl