Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Ryo Tomii"'
Autor:
Akio Shirasu, Norihisa Sasayama, Ryo Tomii, Hiroshi Nagashima, Yukiko Handa, Naoko Imai, Buko Ogawa
Publikováno v:
Journal of Reproduction and Development. 57:273-279
The aim of the present study was to optimize the conditions for in vitro development and postvitrification survival of somatic cell cloned feline embryos. To determine the effects of cell cycle synchronization of the nuclear donor cells, we cultured
Autor:
Hiroshi Nagashima, Takashi Ochiai, Koichiro Kano, Naohiro Wako, Mayuko Kurome, Hitomi Matsunari, Ryo Tomii
Publikováno v:
Journal of Reproduction and Development. 55:121-127
Four methods of cell cycle synchronization of porcine preadipocytes for use as nuclear donors in somatic cell cloning were compared: serum starvation, differentiation induction, contact inhibition and roscovitine treatment. After three days of differ
Autor:
Mayuko Kurome, Hajime Yazawa, Takayuki Ishikawa, Arata Shimada, Hiroshi Nagashima, Ryo Tomii, S. Ueno
Publikováno v:
Journal of Reproduction and Development. 54:156-163
Miniature pigs have been recognized as valuable experimental animals in various fields such as medical and pharmaceutical research. However, the amount of information on somatic cell cloning in miniature pigs, as well as genetically modified miniatur
Autor:
Shirou Matsumoto, S. Ueno, Ryo Tomii, Hisashi Hisatomi, Mayuko Kurome, Fumio Endo, H. Saito, K. Hiruma, Yuji Kaji, Hiroshi Nagashima, Kimitoshi Nakamura, Mitsuhito Matsumoto, Kenji Okumura
Publikováno v:
Journal of Reproduction and Development. 54:254-258
The aim of the present study was to examine the production efficiency of cloned pigs by serial somatic cell nuclear transfer (SCNT) and to ascertain any changes in the telomere lengths of multiple generations of pigs. Using fetal fibroblasts as the s
Autor:
Hiroshi Nagashima, Hitomi Matsunari, Ryo Tomii, Naoki Nakayama, Mayuko Kurome, H. Saito, K. Hiruma, S. Ueno
Publikováno v:
Biology of Reproduction. 76:900-905
We have successfully produced healthy piglets following cryopreservation of embryos derived from oocytes matured and fertilized in vitro. The appropriate timing of cryopreservation pretreatment (removal of cytoplasmic lipid droplets [delipation] and
Publikováno v:
Journal of Reproduction and Development. 53:1113-1118
The aim of this study was to examine the impact of zona pellucida damage, which might arise during somatic cell nuclear transfer (SCNT), on the development and survival of transferred embryos. The zonae pellucidae of in vitro matured oocytes were eit
Publikováno v:
Journal of Reproduction and Development. 53:1217-1226
Intracytoplasmic sperm injection (ICSI)-mediated gene transfer has recently been shown to be an effective technique for producing transgenic pigs; however, the types of sperm pretreatment having the most beneficial effects on post-ICSI embryogenesis
Publikováno v:
Biochemical and Biophysical Research Communications. 344:455-462
The application of nuclear transfer technology is an interesting approach to investigate stem and progenitor cell transplantation therapy. If stem cells are used as a nuclear donor, donor cells can engraft into cloned animals without histocompatible
Publikováno v:
Transgenic Research. 15:229-240
The objective of this study was to examine whether the ICSI-mediated gene transfer method using in vitro matured oocytes and frozen sperm head could actually produce transgenic pigs. We also aimed at examining whether transgenic pigs can be cloned fr
Publikováno v:
Journal of Reproduction and Development. 51:405-410
Incomplete cytoplasmic maturation of in vitro matured (IVM) oocytes has been known to cause microtubule and microfilament alterations, which may result in abnormal pronuclear formation and failed embryonic development. We examined the influences of m