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Cloned calves derived from somatic cell nuclear transfer embryos cultured in chemically defined medium or modified synthetic oviduct fluid
Goo Jang*, So Gun Hong, Byeong Chun Lee* 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2011, 제 12권 제 1호 12 83-89 (7 pages)
Somatic cell nuclear transfer (SCNT) is considered to be a critical tool for propagating valuable animals. To determine the productivity calves resulting from embryos derived with different culture media, enucleated oocytes matured in vitro were reconstructed with fetal fibroblasts, fused, and activated. The cloned embryos were cultured in modified synthetic oviduct fluid (mSOF) or a chemically defined medium (CDM) and developmental competence was monitored. After 7 days of culturing, the... -
Microtubule distribution in somatic cell nuclear transfer bovine embryos following control of nuclear remodeling type
Dae-Jin Kwon, Yu-Mi Lee, In-Sun Hwang, Choon-Keun Park, Boo-Keun Yang, Hee-Tae Cheong 대한수의학회 Journal of Veterinary Science 9 Pages
대한수의학회 Journal of Veterinary Science 2010, 제 11권 제 2호 1 93-101 (9 pages)
of bovine somatic cell nuclear transfer (SCNT) embryos with caffeine or roscovitine. Bovine somatic cells were fused to enucleated oocytes treated with either 5 mM caffeine or 150 mM roscovitine to control the type of nuclear remodeling. The proportion of embryos that underwent premature chromosome condensation (PCC) was increased by caffeine treatment but was reduced by roscovitine treatment (p ＜ 0.05). The microtubule organization was examined by immunostaining b- and g-tubulins at 15 min, 3... -
Production of cloned sei whale (Balaenoptera borealis) embryos by interspecies somatic cell nuclear transfer using enucleated pig oocytes
Eunsong Lee, Mohammad Musharraf Uddin Bhuiyan, Hiroyuki Watanabe, Kohji Matsuoka, Yoshihiro Fujise, Hajime Ishikawa, Yutaka Fuku 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2009, 제 10권 제 4호 2 285-292 (8 pages)
In this study, we examined the feasibility of using subzonal cell injection with electrofusion for interspecies somatic cell nuclear transfer (iSCNT) to produce sei whale embryos and to improve their developmental capacity by investigating the effect of osmolarity and macromolecules in the culture medium on the in vitro developmental capacity. Hybrid embryos produced by the electrofusion of fetal whale fibroblasts with enucleated porcine oocytes were cultured in modified porcine zygote medium-3... -
Autologous somatic cell nuclear transfer in pigs using recipient oocytes and donor cells from the same animal
Eunsong Lee*, Kilyoung Song 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2007, 제 8권 제 4호 15 415-422 (8 pages)
differ from those (55±6% and 3±1%, respectively) in the CCC-derived SCNT embryos. Autologous SCNT embryos derived from CFCs (5±2%) showed higher levels of blastocyst formation (p＜0.01) than CCC-derived autologous SCNT embryos (1±0%). In conclusion, the results of the present study show that culturing cumulus and follicular cells before SCNT enhances cell fusion with oocytes and that CFCs are superior to CCCs in the production of higher numbers of autologous SCNT blastocysts. -
Modification of maturation condition improves oocyte maturation and in vitro development of somatic cell nuclear transfer pig embryos
Kilyoung Song, Eunsong Lee 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2007, 제 8권 제 1호 12 81-87 (7 pages)
examined effects on the developmental competence of pig oocytes after somatic cell nuclear transfer (SCNT) or parthenogenetic activation (PA) of : 1) co-culturing of oocytes with follicular shell pieces (FSP) during in vitro maturation (IVM); 2) different durations of maturation; and 3) defined maturation medium supplemented with polyvinyl alcohol (PVA; control), pig follicular fluid (pFF), cysteamine (CYS), or β-mercaptoethanol (β-ME). The proportion of metaphase II oocytes was increased (p <... -
Oocyte maturation under a biophoton generator improves preimplantation development of pig embryos derived by parthenogenesis and somatic cell nuclear transfer
Joohyeong Lee , Hyeji Shin , Wonyou Lee , Seung Tae Lee , Geun-shik Lee , Sang-hwan Hyun , Eunsong Lee 대한수의학회 Korean Journal of Veterinary Research(구 대한수의학회지) 7 Pages
대한수의학회 Korean Journal of Veterinary Research(구 대한수의학회지) 2017, 제 57권 제 2호 3 89-95 (7 pages)
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난자와 난구세포간 Cell-to-Cell Communication이 난자에 미치는 영향
신창숙, 윤세진, 박창은, 이경아 한국발생생물학회 발생과 생식 8 Pages
한국발생생물학회 발생과 생식 2001, Vol.5 No.2 115-122 (8 pages)
연구는 같은 크기의 난포에서 나온 난자라고 하여도 cumulus cell(난구세포)들이 붙어있는 상태가 다르다는 것을 관찰, 이렇게 난구세포와의 서로 다른 연결상태를 갖는 난자의 재질에 차이가 있을 것으로 가정하고, 난자의 competence와 이때 난자와 난구세포 사이의 cell-to-cell communication에 관여하는 gap junction protein인 connexin(CX) 37과 CX 43의 발현 정도가 어떤 상관관계가 있는지를 알아보고자 수행하였다. 생후 3주일 된 생쥐에 PMSG를 주입하고 48시간 후에 난소를 적출하여 난포를 450 $mu extrm{m}$ 이상(large)의... -
Effects of Lanosterol on Porcine Oocytes in vitro Maturation and Subsequent Embryonic Development after Parthenogenetic Activation
Sang hoon Lee, Jun Xue Jin, Crani Khoirinaya, Joon Ho Moon, Eun Jung Park, Geon A Kim, Byeong Chun Lee 대한수의학회 대한수의학회 학술대회발표집 1 Pages
대한수의학회 대한수의학회 학술대회발표집 춘계학술심포지움 164 224-224 (1 pages)
