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Cell surface alterations in embryonic tissues exposed to RGD-peptides: selective expression
J W Lash1, K M Yamada, R Bellairs
1Department of Cell and Developmental Biology, University of Pennsylvania, Philadelphia, USA.
Abstract:
Whole animal studies have implicated cell adhesion molecules in a diverse array of developmental processes. The present study reports on the morphological effects of RGD-related peptides on the cell surface of various living chick embryonic tissues. We report a novel and characteristic plasma membrane reaction that is caused by treatment with different RGD-peptides. Not only does each peptide evoke a response in certain tissues and not in others, but each brings about a specific type of plasma membrane reaction (bleb). Although the mechanisms are unknown, the specificity of this phenomenon suggests that it could provide a window into new surface interactions in morphogenetic systems.
Insights
RGD-related peptides cause specific cell surface reactions, like blebbing, in chick embryonic tissues. This finding offers insights into cell adhesion and developmental surface interactions.
Area of Science:
- Developmental Biology
- Cell Biology
- Biochemistry
Background:
- Cell adhesion molecules are crucial for embryonic development.
- Previous studies implicated these molecules in various developmental processes.
Purpose of the Study:
- To investigate the morphological effects of RGD-related peptides on chick embryonic tissues.
- To identify novel cell surface reactions induced by these peptides.
Main Methods:
- Treatment of living chick embryonic tissues with different RGD-peptides.
- Observation and documentation of plasma membrane reactions.
Main Results:
- A novel and characteristic plasma membrane reaction (blebbing) was observed.
- Peptide-specific responses varied across different embryonic tissues.
- Each RGD-peptide induced a distinct type of plasma membrane reaction.
Conclusions:
- RGD-related peptides induce specific plasma membrane blebbing in chick embryonic tissues.
- The tissue-specific and peptide-specific nature of these reactions suggests a role in cell surface interactions.
- This phenomenon may provide new insights into morphogenetic processes.
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