中国组织工程研究

• 干细胞基础实验 • 上一篇    下一篇

昆明小鼠胚胎干细胞最佳分离方法及培养液选择

田海清,蔡霞,腊晓琳,胡泊   

  1. 新疆医科大学生殖医学中心,新疆维吾尔自治区乌鲁木齐市 830054
  • 出版日期:2010-12-03 发布日期:2010-12-03
  • 通讯作者: 腊晓琳,博士,副主任医师,新疆医科大学生殖医学中心,新疆维吾尔自治区乌鲁木齐市 830054
  • 作者简介:田海清,女,1976年生,山东省潍坊市人,汉族,2000年新疆医科大学毕业,主要从事妇产科专业研究。 tianhaiqing1118@163.com
  • 基金资助:

    新疆医科大学第一附属医院科研专项基金(GXB-001),课题名称:不同来源胚胎干细胞分离培养及鉴定。

Optimized isolation method and medium choice of embryonic stem cells from Kunming mice

Tian Hai-qing, Cai Xia, La Xiao-lin, Hu Bo   

  1. Reproduction Medical Center, Xinjiang Medical University, Urumqi  830054, Xinjiang Uygur Autonomous Region, China
  • Online:2010-12-03 Published:2010-12-03
  • Contact: La Xiao-lin, Doctor, Associate chief physician, Reproduction Medical Center, Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China
  • About author:Tian Hai-qing, Reproduction Medical Center, Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China tianhaiqing1118@163.com
  • Supported by:

    the Scientific Research Foundation of First Affiliated Hospital of Xinjiang Medical University, No. GXB-001

摘要:

背景:到目前为止已经建立数百个小鼠胚胎干细胞系,昆明小鼠是中国应用最多的实验小鼠,其建系成功报道极少。
目的:建立一简单有效的昆明小鼠胚胎干细胞分离培养体系,以提高昆明鼠胚胎干细胞建系成功率。
方法:用添加血清替代物或胎牛血清培养液的小鼠胚胎成纤维细胞制备饲养层。昆明小鼠经孕马血清促性腺激素和人绒毛膜促性腺激素促排卵,交配后3.5 d冲洗子宫取胚胎,将胚胎接种在饲养层中培养,观察胚胎贴壁、内细胞团集落形成率。4~ 6 d后在0.05%trypsin-0.02%EDTA消化液中用切割法处理增殖的内细胞团块,再接种到新的饲养层上。倒置显微镜下观察形成的胚胎干细胞样集落形态。
结果与结论:妊娠3.5 d孕鼠适合胚胎干细胞的分离培养;在0.05%trypsin-0.02%EDTA消化液中采用切割法进行内细胞团集落的分离,集落增殖快、分化低;在含胎牛血清培养液中进行干细胞培养较血清替代物培养液中传代次数多,此培养液更适宜进行分离培养昆明鼠胚胎干细胞。

关键词: 昆明小鼠, 胚胎干细胞, 分离培养, 胎牛血清, 血清替代物

Abstract:

BACKGROUND: Up to date, hundreds of mouse embryonic stem cell (ESC) line has been established. Mouse of Kunming line is commonly used in experiment, and rare reports have addressed the success establishment.
OBJECTIVE: To establish simple, efficient protocol for the derivation of ESCs from Kunming mice, and to elevate the success rate of establishment.
METHODS: Mouse ESCs were incubated with the media containing serum surrogate or fetal bovine serum. Females of Kunming mice were superovulated with an injection of priganant mare’s serum gonadotropin and human chorionic gonadotropin. Blastocysts were collected by flushing the uterus at 3.5 days after copulation. Embryos were transferred in dish with fresh mouse embryonic fibroblasts feeder layer. Blastocysts detachment and colony forming efficiency of inner cell mass were observed. 4-6 days after culture, inner cell masses were digested mechanically in 0.05% trypsin-0.02%ethylenediamine tetraacetic acid.The disaggregated inner cell masses were transferred into a new feeder layer. Typical ESCs morphology was observed through an inverted microscope.
RESULTS AND CONCLUSION: Pregnant mice of 3.5 days were the best choice to derive ESCs. Inner cell masses were separated through cutting in drops of 0.05% trypsin-0.02% ethylenediamine tetraacetic acid. The disaggregated inner cell masses grew more rapidly and maintained less differentiation. The ESCs were passaged many times in fetal bovine serum medium. This medium is more suitable to separate ESCs from Kunming mouse.

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