In vitro expression of n-cadherin adhesion molecule during early cardiac morphogenesis

Area of Science:

• Developmental Biology
• Cell Biology
• Embryology

Background:

• Investigating the organogenetic potential of early embryonic cells is crucial for understanding developmental processes.
• The cardiogenic area of chick embryos provides a model system for studying early cell differentiation and tissue formation.
• Cell adhesion molecules play a significant role in tissue morphogenesis during embryonic development.

Purpose of the Study:

• To investigate the in vitro organogenetic potential of chick embryo cardiogenic cells during early developmental stages.
• To determine the relationship between N-Cadherin expression and the formation of vascular-like structures in vitro.
• To explore the temporal dynamics of N-Cadherin expression and its role in cell organization.

Main Methods:

• Culture of chick embryo subcephalic folds from the presomitic to 8-somite stages in liquid medium for up to 7 days.
• Observation of cell migration, beating masses, and vascular-like structures in explants.
• Immunohistochemical detection of N-Cadherin expression in cultured cells and assessment of its modulation by antiserum.

Main Results:

• Beating vascular-like structures formed in explants from the 3-somite stage onwards.
• N-Cadherin expression was detected from the 3-somite stage onwards, correlating with embryo development.
• Inhibition of N-Cadherin function affected the formation of vascular-like structures, with age-dependent effects.

Conclusions:

• N-Cadherin expression is linked to the ability of presumptive myocardic cells to form organized tridimensional structures in vitro.
• The expression of N-Cadherin and the potential for tubular structure formation are transient in vitro.
• In vivo, N-Cadherin function likely requires additional unidentified factors for sustained expression and organization.