한우 체외수정란의 체외배양, 동결보존 및 이식에 관한 연구 I. 한우 체외수정란의 체외배양에 대한 공배양세포와 성장인자의 효과
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ㆍ발행기관 : 한국수정란이식학회
ㆍ수록지정보 : Journal of Embryo Transfer / 11권 / 2호
ㆍ저자명 : 김일화, 손동수, 이호준, 최선호, 양병철, 이광원, 김경남, 장인호
영어 초록
The present study was carried out to investigate the effects of co-culture cells and growth factors on in vitro culture of Korean native cattle(KNC) embryos fertilized in vitro. Two-eight cell embryos were cultured in vitro using 4 types of co-culture cells and 3 growth factors singly or in combination. The results were as follows, In the co-culture of 2~8 cell embryos with bovine oviductal epithelial cell(BOEC), granulosa cell(BGC), uterine epithelial cell(BUEC) and mouse embryonic fibroblast (MEF) monolayers, the developing rate to blastocysts was significantly(P<0.05) higher with BUEC(32.1%) than with MEF(15.3%), BGC(13.2%) and non co-culture control(11.6%). When the morula co-cultured with BOEC for 5 days following in vitro fertilization were co-cultured with BOEC continuously or with BUEC, respectively, the developing rate to blastocysts was higher with BUEC(73.9%) than with BOEC(56.0%). To examine the effects of growth factors on in vitro development of 2~8 cell embryos, epidermal growth factor(EGF), transforming growth factor-l(TGF-l) and insulin-like growth factor-1(IGF-1) were added singly or in combination to TCM 199 maturation medium with respective concentration. In a addition of each 10, 30 and SOng /rnl EGF, the developing rate to blastocysts was the highest in lOng /ml EGF(25.3%). In addition of each 1, 2 and Sng /mi TGF-1, the developing rate to blastocysts was the highest in lng /ml TGF-1(28.8%). In addition of each 50, 100ng/ml JGF-l, the developing rate to blastocysts was higher in 100ng/ml IGF-l(16.5%) than in SOng/mi IGF-1(12.9%). When lOng /ml EGF and lng /ml TGF-l was added singly or in combination, the developing rate to blastocysts was similar in groups added singly or in combination with EGF and TGF-l (23.l~24.6%), although higher than in control(16.7%). In the co-culture of 2~8 cell embryos Wth BOEC + each 10, 30 and 5Ong /rnl EGF, the developing rate to blastocysts was significantly(p<0.05) higher in BOEC + long /ml EGF(32.3%) than in BOEC + 3Ong /ml EGF(18.9%) and BOEC + song /ml EGF(9.7%). In the co-culture of 2~8 cell embryos with BOEC + each 1, 2, Sng /ml TGF-l the developing rate to blastocysts was higher in BOEC + Sng/rnl TGF-l(28.2%) than in BOEC + lng /ml TGF-l(21.7%) and BOEC + 2ng/ml TGF-l(21.4%). In summary, higher developing rate to blastocysts were obtained with co-culture of BUEC for co-culture system, with addition of lOng /ml EGF or lng /ml TGF-l for growth factor culture system, and with co-culture of BOEC + lOng /ml EGF or BOEC + Sng /ml TGF-l for co-culture + growth factor culture system.
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