Patterning Microtubule Network Organization Reshapes Cell-Like Compartments.

Area of Science:

• Cell Biology
• Biophysics
• Synthetic Biology

Background:

• Eukaryotic cells possess dynamic microtubule networks crucial for cell structure and function.
• Microtubule organization is influenced by biochemical regulators, motors, and physical forces from cell boundaries.
• Disentangling these contributions in living cells is complex due to inherent redundancies.

Purpose of the Study:

• To develop a minimal cell-like system for real-time manipulation and spatial patterning of cytoskeletal components.
• To investigate how biochemical and physical factors contribute to microtubule network organization.
• To explore the dynamic interplay between cellular structures and boundary forces.

Main Methods:

• Constructed a system for induced spatial patterning of proteins within cell-sized emulsion compartments.
• Utilized small molecules and light to control dynamic protein relocalization and create stable micropatterns.
• Fused microtubule-interacting proteins to optochemical dimerization domains for directed organization.

Main Results:

• Successfully drove microtubule network organization in real-time within engineered compartments.
• Demonstrated that cortical patterning of polymerizing microtubules induces symmetry breaking.
• Observed significant reshaping of the compartment driven by microtubule-generated forces.

Conclusions:

• The developed system enables precise control over microtubule organization, facilitating the study of biochemical and physical influences.
• This approach allows for the characterization of how cellular components interact with physical boundary conditions.
• The technology has potential applications in protocell engineering and the development of synthetic cells with augmented functionalities.