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The complexity in regulating the expression of tenascins
R Chiquet-Ehrismann1, C Hagios, S Schenk
1Friedrich Miescher Institute, Basel, Switzerland.
Summary
Tenascin-C, an extracellular matrix protein, is dynamically expressed during development and disease. Its expression can be influenced by mechanical forces, potentially impacting tissue organization and cell movement.
Area of Science:
- Biochemistry
- Developmental Biology
- Cell Biology
Background:
- Tenascin proteins are extracellular matrix components with multidomain structures.
- Tenascin-C is a key member, exhibiting regulated expression during embryonic development.
- Reexpression of tenascin-C in adults is linked to pathological conditions like tumors.
Purpose of the Study:
- To investigate the regulation and function of tenascin-C.
- To explore the role of mechanical strain in tenascin-C expression.
- To understand tenascin-C's influence on cell adhesion and movement.
Main Methods:
- Analysis of tenascin-C expression patterns.
- Investigation of regulatory factors including growth factors, hormones, and mechanical strain.
- Comparative studies with fibronectin and tenascin-R.
Main Results:
- Tenascin-C shows transient expression during embryonic organogenesis.
- Mechanical strain from fibroblasts can induce tenascin-C expression.
- Tenascin-C and tenascin-R appear to inhibit fibronectin's cell adhesion activity.
Conclusions:
- Tenascin-C plays a role in morphogenetic tissue interactions.
- Mechanical forces may translate into protein patterns relevant to embryogenesis.
- Tenascin proteins facilitate cell movement by counteracting fibronectin.