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肝素结合表皮生长因子(HB-EGF)可能通过增加着床期小鼠胚胎中玻连蛋白受体(整合素αvβ3)的表达来改善胚胎发育和着床。

Heparin-binding epidermal growth factor (HB-EGF) may improve embryonic development and implantation by increasing vitronectin receptor (integrin alphanubeta3) expression in peri-implantation mouse embryos.

作者信息

Lim Jung Jin, Lee Dong Ryul, Song Haeng-Seok, Kim Kye-Seong, Yoon Tae Ki, Gye Myung Chan, Kim Moon Kyoo

机构信息

Department of Life Science, College of Natural Science, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Korea.

出版信息

J Assist Reprod Genet. 2006 Mar;23(3):111-9. doi: 10.1007/s10815-006-9021-9. Epub 2006 Apr 19.

Abstract

PURPOSE

This study investigated the effects of HB-EGF on expression of integrin alphanubeta3 and implantation of embryos.

METHODS

Two-cell embryos were recovered and cultured with or without 10 ng/mL HB-EGF for 96h. Expression of integrin alphanubeta3 in cultured embryos was examined by real time-RT-PCR and immunofluorescence analysis; embryos were cultured with or without HB-EGF, then transferred into the uteri of pseudo-pregnant female mice in order to analyze their implantation rate.

RESULTS

HB-EGF improved embryonic hatching and outgrowth during extended culture, and up-regulated expression of integrin alphanubeta3 in both the preimplantation embryo and outgrowing blastocyst. Also, integrin alphanubeta3 subunits were localized at the pericellular borders and cell-cell contact areas. The number of successful implantation sites of transferred HB-EGF-treated embryos in the uterus was increased when compared to number of implantation sites with non-treated controls.

CONCLUSIONS

HB-EGF may improve implantation by accelerating expression of integrin alphanubeta3 in peri-implantation mouse embryos.

摘要

目的

本研究调查了肝素结合表皮生长因子(HB-EGF)对整合素αvβ3表达及胚胎着床的影响。

方法

回收二细胞胚胎,在添加或不添加10 ng/mL HB-EGF的条件下培养96小时。通过实时逆转录聚合酶链反应(real time-RT-PCR)和免疫荧光分析检测培养胚胎中整合素αvβ3的表达;胚胎在添加或不添加HB-EGF的条件下培养,然后移植到假孕雌性小鼠子宫内,以分析其着床率。

结果

HB-EGF在延长培养期间改善了胚胎孵化和生长,并上调了着床前胚胎和生长中的囊胚中整合素αvβ3的表达。此外,整合素αvβ3亚基定位于细胞周围边界和细胞-细胞接触区域。与未处理的对照组相比,移植经HB-EGF处理的胚胎后子宫内成功着床部位的数量增加。

结论

HB-EGF可能通过加速着床期小鼠胚胎中整合素αvβ3的表达来改善着床。

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