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Selective disruption of gap junctional communication interferes with a patterning process in hydra.
Science (New York, N.Y.)
|July 3, 1987
Summary
Gap junctions enable rapid cell communication in hydra, crucial for tissue patterning. Blocking these junctions with antibodies disrupts developmental gradients, highlighting their essential role in hydra development.
Area of Science:
- Cell Biology
- Developmental Biology
- Regenerative Medicine
Background:
- Hydra body column cells possess numerous gap junctions facilitating rapid intercellular communication.
- The speed of molecular transfer and recovery of gap junction coupling suggests a role in tissue patterning.
Purpose of the Study:
- To investigate the role of gap junctions in hydra tissue patterning.
- To determine if cell-cell communication via gap junctions is essential for developmental processes in hydra.
Main Methods:
- Utilized antibodies against a major rat liver gap junction protein to target hydra gap junctions.
- Assessed the impact of antibody-induced junctional communication blockade on hydra grafting experiments.
- Examined the effect on the head inhibition gradient during grafting operations.
Main Results:
- Antibodies recognized a gap junction antigen in hydra, effectively eliminating junctional communication.
- The rate of gap junction communication and recovery after grafting is rapid enough to influence tissue patterning.
- Antibody treatment perturbed the head inhibition gradient in grafting experiments.
Conclusions:
- Cell-cell communication through gap junctions is vital for the head inhibition gradient and tissue patterning in hydra.
- Gap junctions play a critical role in the defined patterning processes during hydra development.