Mouse embryo culture for screening in human IVF.

Area of Science:

• Reproductive Biology
• In Vitro Fertilization (IVF)
• Embryology

Background:

• Mouse two-cell embryos serve as a model for human IVF quality control.
• Standardized culture systems are crucial for reliable experimental outcomes.

Purpose of the Study:

• To describe a system for culturing mouse two-cell embryos.
• To evaluate its utility as a quality control assay for human IVF.
• To assess the impact of various media and materials on embryo development.

Main Methods:

• Cultured over 2000 B6CBAF1 mouse embryos in Ham's F10 with human fetal cord serum (H+FCS) or Krebs' medium.
• Assessed embryo development to morula and blastocyst stages after 72 hours.
• Tested the effects of different media (Ham's F12, Menezo's) and materials (silicone, Vacutainer tubes) on embryo development.

Main Results:

• No significant difference in mean embryo development between H+FCS and Krebs' medium.
• High rates of morula + blastocyst development (93% H+FCS, 98% Krebs') were observed.
• Vacutainer tubes significantly impaired embryo development in Krebs' medium, unlike silicone devices.

Conclusions:

• The described mouse embryo culture system is a valuable tool for IVF quality control.
• Certain materials, specifically Vacutainer tubes, can negatively impact IVF media efficacy.
• Further investigation into material-induced toxicity in IVF is warranted.