In vitro assays to study force generation at dynamic microtubule ends

Area of Science:

• Cell Biology
• Biophysics

Background:

• Biopolymers like the cytoskeleton are crucial for cellular organization and dynamics.
• Cytoskeletal reorganization, driven by polymer assembly/disassembly, enables cellular processes like division.
• Forces generated at the cell boundary by cytoskeletal polymers are key to cellular organization.

Purpose of the Study:

• To describe in vitro assays for studying force generation and regulation of microtubules (MTs) interacting with barriers.
• To investigate the role of MT interactions with cell boundaries in cellular organization.
• To detail methods for creating and utilizing microfabricated barriers in cell biology experiments.

Main Methods:

• Utilizing functionalized microfabricated barriers to mimic cell boundaries in minimal systems.
• Growing MTs against these microfabricated structures to observe specific cellular processes.
• Describing materials, microfabrication techniques, labeling strategies, and assay incorporation.

Main Results:

• Presents examples of data obtained using the described in vitro assays.
• Demonstrates how MTs interact with microfabricated barriers to generate forces.
• Provides insights into the regulation of MTs at interfaces.

Conclusions:

• The described in vitro assays offer a powerful tool to study MT dynamics and force generation at cellular boundaries.
• These methods facilitate a deeper understanding of how MTs contribute to cellular organization.
• The chapter provides a comprehensive guide to setting up and interpreting experiments on MT-barrier interactions.