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Monoclonal antibody ECCD-1 inhibits intercellular communication in teratocarcinoma PCC3 cells
Abstract:
The monoclonal antibody ECCD-1 recognizing a certain class of cell surface proteins inhibits the Ca2+-dependent cell-to-cell adhesion in teratocarcinoma stem cells. In this paper, we studied the effect of ECCD-1 on cell-to-cell communication in PCC3 cells by measuring the transfer of lucifer yellow between cells. To this aim, PCC3 cells were cultured in the presence of ECCD-1 for various periods, and then the fluorescent dye was injected into a cell located in the center of cell colonies, followed by counting number of cells to which the dye was transferred. The results showed that ECCD-1 inhibits the dye transfer between cells, suggesting that the Ca2+-dependent cell-to-cell adhesion system (CDS) is essential for the functions of gap junction.
Insights
The monoclonal antibody ECCD-1 blocks calcium-dependent cell adhesion, inhibiting communication between teratocarcinoma stem cells. This suggests the cell adhesion system is crucial for gap junction function.
Area of Science:
- Cell Biology
- Developmental Biology
- Biochemistry
Background:
- Cell-to-cell adhesion is vital for multicellular organism development and function.
- Teratocarcinoma stem cells offer a model for studying early developmental processes.
- Gap junctions mediate direct cell-to-cell communication, essential for tissue coordination.
Purpose of the Study:
- To investigate the role of the calcium-dependent cell adhesion system (CDS) in regulating cell-to-cell communication.
- To determine if the monoclonal antibody ECCD-1 affects intercellular communication in PCC3 teratocarcinoma stem cells.
Main Methods:
- PCC3 cells were cultured with the monoclonal antibody ECCD-1.
- Lucifer yellow dye transfer was measured to assess cell-to-cell communication.
- The number of cells receiving dye from a central injected cell was quantified.
Main Results:
- ECCD-1 significantly inhibited the transfer of lucifer yellow dye between PCC3 cells.
- This inhibition demonstrates a reduction in intercellular communication.
Conclusions:
- The calcium-dependent cell adhesion system (CDS) is essential for proper gap junction function.
- ECCD-1, by inhibiting cell adhesion, disrupts cell-to-cell communication pathways.