Improved Development of ICR Mouse 2-Cell Embryos by the Addition of Amino Acids to a Serum-, Phosphate-and Glucose-Free Medium

Journal of Veterinary Medical Science

Byeongchun LEE³  Woosuk HWANG¹  Jongki CHO¹  Jaeyong HAN¹  Jeongmook LIM¹  Seungeun PARK⁴  Sungkeun KANG³  Hyungmin CHUNG⁴  Eunsong LEE²  Hosup SHIM⁵  Kihyeong RHEE⁶  Changkyu LEE¹ 

[1] School of Agricultural Biotechnology, Seoul National University;Department of Veterinary Medicine, Kwangwon National University;College of Veterinary Medicine, Seoul National University;College of Medicine, Pochon CHA University;Department of Physiology, College of Medicine, Dankook University;Department of Biological Science, Kongju National University

关键词: amino acid;    blastocyst;    embryo culture;    mouse;    preimplantation development;   

DOI  :  10.1292/jvms.64.797

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

References(26)Cited-By(3)This study was conducted to evaluate how exogenous amino acids could affect preimplantation development of ICR mouse embryos. Two-cell embryos collected from naturally mated mice were cultured in amino acid-, glucose- and phosphate-free preimplantation (P)-1 medium. In Experiments 1, 19 amino acids (aa; 1% and 0.5% of MEM essential and nonessential amino acid solutions, respectively) were added to P-1 medium supplemented with either fatty acid-free bovine serum albumin (BSA; 3 mg/mL) or human follicular fluid (hFF; 10%). Regardless of BSA or hFF addition, embryo development to the morula (84 to 86% vs. 97 to 100%) and the blastocyst (54% vs. 93 to 94%) stages was significantly (P<0.05) enhanced by the addition of aa compared with no addition. In Experiment 2, the cell number of blastomeres and inner cell mass (ICM) cells in blastocysts and the ratio of ICM cell to trophectodermal cell (TE) were evaluated after aa addition. In both BSA- and hFF-containing P-1 medium, a significant increase in total blastomere number were found after aa addition (47 to 52 vs. 62 to 63 cells) compared with no addition. However, the ICM/TE ratio was not significantly affected by aa supplementation in both media, while ICM cell number was greatly increased after aa addition in hFF-containing medium (12 vs. 17 cells). When blastocysts were further cultured up to 162 hr post-hCG injection, development to the hatched blastocyst stage was significantly promoted by aa addition (0% vs. 11 to 20%) in both BSA- and hFF-containing media. In conclusion, aa significantly promote the preimplantation development to the hatched blastocyst stage and such effect mainly exerted on supporting blastomere proliferation.

【 授权许可】

Unknown