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Force communication in multicellular tissues addressed by laser nanosurgery
Julien Colombelli1, Jérôme Solon
1Institute for Research in Biomedicine (IRB Barcelona), c/ Baldiri Reixac 10-12, 08028, Barcelona, Spain. julien.colombelli@irbbarcelona.org
Cell and Tissue Research
|May 25, 2012
Summary
Pulsed laser ablation precisely perturbs cellular forces in developing tissues. This technique reveals how cell contractility and force transmission drive tissue morphogenesis and mechanosensing.
Area of Science:
- Cellular and Molecular Biology
- Developmental Biology
- Biophysics
Background:
- Cell contractility, driven by the actomyosin cytoskeleton, is crucial for tissue development and remodeling.
- Cell-generated forces can propagate through tissues, enabling collective organization and robust morphogenesis.
- Investigating tissue tension and cell-cell force communication is vital for understanding developmental processes.
Purpose of the Study:
- To explore the application of pulsed laser-based surgery for in vivo investigation of intracellular and supracellular forces.
- To elucidate the role of cellular mechanics and force transmission in tissue morphogenesis.
- To understand force-sensing mechanisms and cell-cell communication in developing tissues.
Main Methods:
- Characterization of laser ablation modes (intracellular, cellular, multicellular) using Drosophila amnioserosa as a model.
- Correlation of subnanosecond laser pulse energy with ablation efficiency and cavitation bubble formation.
- Review of recent laser nanosurgery experiments in cultured cells and in vivo studies.
Main Results:
- Laser ablation allows precise perturbation of mechanical equilibrium in specific cell populations or single cells without disrupting the overall tissue.
- The technique provides molecular insights into actomyosin mechanics and force-sensing mechanisms.
- Laser ablation has been instrumental in revealing the nature and orientation of forces in tissue development processes like axis elongation and branching morphogenesis.
Conclusions:
- Pulsed laser surgery is a powerful tool for dissecting the role of cellular contractility and force propagation in tissue development.
- The technique offers significant perspectives for studying force-based cell-cell communication and mechanosensing pathways.
- Advanced laser nanosurgery combined with biophysical models deepens our understanding of how mechanical forces shape developing tissues.
