Integrin-Mediated Adhesion to Fibronectin Is Required for Axis Elongation and Somitogenesis in Mice
Author Information
Author(s): Amparo Girós, Katja Grgur, Achim Gossler, Mercedes Costell
Primary Institution: Universitat de València
Hypothesis
The interaction of presomitic mesoderm cells with the RGD motif of fibronectin is essential for axis elongation and somitogenesis.
Conclusion
The study demonstrates that α5β1 integrin-mediated adhesion to fibronectin is crucial for the proper elongation of the body axis and the formation of somites in mice.
Supporting Evidence
- FNRGE/RGE embryos display a shortened posterior trunk and irregular presomitic mesoderm.
- Somite formation arrests at the end of Theiler stage 13 in FNRGE/RGE embryos.
- Expression of cyclic genes is decreased and asymmetric in FNRGE/RGE embryos.
Takeaway
Mice need a special protein called fibronectin to grow properly. Without it, they can't grow their tails or make body segments.
Methodology
The study involved generating mutant mice lacking a functional RGD motif in fibronectin and analyzing their development through various embryonic stages.
Potential Biases
Potential bias in interpreting results due to reliance on specific genetic models.
Limitations
The study primarily focuses on a specific mutation and may not account for other factors influencing somitogenesis.
Participant Demographics
Mice embryos at various embryonic stages (E8.0 to E10.5).
Statistical Information
P-Value
p<0.01
Statistical Significance
p<0.01
Digital Object Identifier (DOI)
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