Rapid method for cultured trophoblast cells identification.

Area of Science:

• Cell Biology
• Reproductive Biology
• Biochemistry

Background:

• In vitro culture of human chorionic villi cells is crucial for studying placental development.
• Accurate identification of trophoblast cells is essential to avoid contamination and ensure reliable experimental results.

Purpose of the Study:

• To investigate the effect of human foetal cord serum on in vitro growth of human chorionic villi cells.
• To evaluate the expression of human chorionic gonadotropin (HCG) and basement membrane markers in cultured villi cells.
• To determine the utility of basement membrane markers for rapid trophoblast cell identification.

Main Methods:

• Human chorionic villi cells were cultured in vitro, with some media supplemented with human foetal cord serum.
• Immunoperoxidase staining was employed to detect the expression of HCG, laminin, laminin receptor, and type IV collagen.
• Cells were analyzed at first passage (4-7 weeks of culture).

Main Results:

• Human foetal cord serum addition improved the in vitro growth of chorionic villi cells.
• No cultured cells expressed HCG.
• Basement membrane markers, including laminin and type IV collagen, were consistently detected in various patterns.
• The presence of laminin and type IV collagen indicated the absence of fibroblast contamination.

Conclusions:

• Human foetal cord serum supports the in vitro expansion of human chorionic villi cells.
• Laminin and type IV collagen are reliable markers for the rapid identification of trophoblast cells in culture.
• These markers effectively distinguish trophoblast cells from potential fibroblast contaminants.