Cytoskeleton Dynamics
Cytoskeleton Dynamics - Related Videos
06:37
Quantifying Cytoskeleton Dynamics Using Differential Dynamic Microscopy
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Cited by 13 •
2022
Differential dynamic microscopy (DDM) combines features of dynamic light scattering and microscopy. Here, the process of using DDM to characterize reconstituted cytoskeleton networks by quantifying the subdiffusive and caged dynamics of particles in vimentin networks and the ballistic motion of active myosin-driven actin-microtubule composites is presented.
12:52
Use of Shigella flexneri to Study Autophagy-Cytoskeleton Interactions
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Cited by 14 •
2014
To counteract pathogen dissemination, host cells reorganize their cytoskeleton to compartmentalize bacteria and induce autophagy. Using Shigella infection of tissue culture cells, host and pathogen determinants underlying this process are identified and characterized. Using zebrafish models of Shigella infection, the role of discovered molecules and mechanisms are investigated in vivo.
08:37
Study of the Actin Cytoskeleton in Live Endothelial Cells Expressing GFP-Actin
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Cited by 33 •
2011
Microscopic imaging of live endothelial cells expressing GFP-actin allows characterization of dynamic changes in cytoskeletal structures. Unlike techniques that use fixed specimens, this method provides a detailed assessment of temporal changes in the actin cytoskeleton in the same cells before, during, and after various physical, pharmacological, or inflammatory stimuli.
01:18
Polarity of the Cytoskeleton
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2023
The intrinsic polarity of cells can be primarily attributed to two factors- i) the asymmetric accumulation of mobile components such are regulatory molecules and subcellular components across the cell and ii) the orientation of polar cytoskeletal filaments that make up the cytoskeletal networks, specifically microfilaments, and microtubules arranged along the axis of polarity. Interactions between the cytoskeletal filaments are crucial for the establishment and maintenance of the polar nature...
01:33
Introduction to Cytoskeleton
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2023
Overview of the Cytoskeleton The cytoskeleton is a network of protein filaments present within the cell, having three distinct filaments ̶ microfilaments, microtubules, and intermediate filaments. Each has characteristic features that distinguish them, including the dynamics of their assembly and disassembly, mechanical properties, polarity, and the type of molecular motors associated with them. Earlier, they were thought to be present only in eukaryotic cells; however, their homologs were...
FAQs
Polymerization adds protein subunits to actin filaments and microtubules, whereas depolymerization removes them. Regulating the balance between these opposing processes allows filament systems to reorganize rather than remain fixed. That turnover enables cells to adjust their internal architecture, alter their shape, respond to signals, and produce movement or force when conditions change.
Motor proteins connect cytoskeletal organization with directed transport and force generation. By moving materials within the cell and producing mechanical forces, they help convert filament arrangements into functional cellular activity. Their action supports organelle organization, cell movement, and other processes in which spatial positioning and physical force must be coordinated.
Intermediate filaments provide comparatively stable mechanical support within the cytoskeletal system. This distinguishes them from the more continuously remodeling actin filaments and microtubules described in cytoskeleton dynamics. Their contribution helps cells withstand mechanical stresses while the other filament systems reorganize to control shape, movement, transport, and structural changes.
Researchers can examine how filament assembly, disassembly, and reorganization correspond with changes in cell shape, organelle organization, movement, and responses to signals or mechanical stress. These observations connect molecular filament behavior with visible cellular outcomes. They also help clarify how coordinated cytoskeletal activity supports division, migration, transport, and tissue development.
Dynamic filament remodeling provides a flexible structural framework for several major biological processes. Changes in actin and microtubule organization, together with motor-generated forces and intermediate-filament support, help coordinate cell movement, intracellular transport, and division. At the tissue level, these activities contribute to development by linking cell behavior with changing organization and mechanical conditions.
Cytoskeleton dynamics offers a framework for investigating how altered cellular organization, transport, movement, or responses to stress may relate to disease-associated processes. The topic is relevant to infection, neurodegeneration, and cancer progression because each context can involve changes in cellular behavior and internal organization. Studying these dynamics helps connect filament activity with broader biological outcomes.