The effect of three-dimensional demineralized bone matrix on in vitro cumulus-free oocyte maturation

✍ Scribed by Suofeng Ma; Hang Lin; Yiliang Miao; Xinyong Liu; Bin Wang; Jianwu Dai

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 847 KB
• Volume: 28
• Category: Article
• ISSN: 0142-9612
• DOI: 10.1016/j.biomaterials.2007.03.007

✦ Synopsis

The physiological role of cumulus cell surrounding oocytes is particularly important for normal cytoplasmic maturation of oocytes. Collagen-based demineralized bone matrix (DBM) is a valuable biomaterial for the three-dimensional (3-D) cell culture. The present study was designed to determine whether in vitro maturation (IVM) of cumulus-free oocytes in mice could be improved by using the 3-D DBM co-culture system. The results indicated that the denuded oocytes cultured in 3-D DBM co-culture system with cumulus cells showed close similarity of cortical granules (CGs) distribution pattern, had more normal maturation-promoting factor (MPF) level and zona pellucida (ZP) hardening level to the in vivo matured oocytes, and the best preimplantation development after being activated by in vitro fertilization (IVF) or parthenogenetic activation. Thus, 3-D DBM collagen scaffold could serve as a tool for fundamental in vitro studies of cells or tissues under the environment that closely assembles the in vivo conditions.