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Cytoskeletal Coordination in Cell Migration01:32

Cytoskeletal Coordination in Cell Migration

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A migrating cell changes its shape during the cyclic events of attachment and detachment from the substratum and repositions the cell organelles correspondingly. These complex events are orchestrated by the dynamic cytoskeletal network comprising actin filaments, intermediate filaments, and microtubules. Cytoskeletal crosstalk — the direct and indirect communication between the different components — is crucial for this coordination. Direct communication involves various linker...
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Myosins are multimeric motor proteins involved in various cellular processes such as migration, adhesion, and proliferation. Myosin II is the most common type in animal cells, which binds and cross-links actin filaments.
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Cell migration, the process by which cells move from one location to another, is essential for the proper development and viability of organisms throughout their life. When cells are not able to migrate properly to their ordained locations, various disorders may occur. For example, disruption in cell migration causes chronic inflammatory diseases such as arthritis.
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Invadosome is a broad category of cell surface structures with proteolytic activity that  degrades the extracellular matrix (ECM). Invadosomes are present in normal cell types, including macrophages, endothelial cells, and neurons, as well as tumor cells. Although the macrophage podosomes and tumor cell invadopodia are classified as invadosomes, they have different structures, molecular pathways, and functions. Podosomes are short structures that last for a few minutes. However,...
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Cells migrating in response to external stimuli form lamellipodia, which are thin membrane protrusions supported by a mesh of linked, branched, or unbranched actin filaments. These actin filaments interact with myosin motor proteins, creating the dynamic actomyosin complex within the cytoskeleton. Contractility, or the ability to generate contractile stress, is inherent to the actomyosin complex. It helps cells detect the stiffness of the surrounding ECM and exert contractile force for...
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In eukaryotes, transcription and translation are compartmentalized; an mRNA is first synthesized in the nucleus and then selectively transported to the cytoplasm for protein synthesis. Before transport, a pre-mRNA undergoes several steps of post-transcriptional modifications including splicing, 5' capping, and the addition of a poly-adenine tail. Various proteins bind to the pre-mRNA during these modifications. The mRNA transport takes place with the help of multiple proteins playing...
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Related Experiment Video

Updated: Oct 21, 2025

Nuclear Migration in the Drosophila Oocyte
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Migrasome biogenesis and functions.

Shunbang Yu1, Li Yu1

  • 1State Key Laboratory of Membrane Biology, Beijing Frontier Research Center for Biological Structure, School of Life Science, Tsinghua University-Peking University Joint Center for Life Sciences, Tsinghua University, Beijing, China.

The FEBS Journal
|September 7, 2021
PubMed
Summary
This summary is machine-generated.

Migrasomes are novel organelles formed by migrating cells on retraction fibers. These structures are involved in cell signaling, damaged mitochondria transport, and molecule transfer, highlighting their diverse cellular roles.

Keywords:
cell migrationconfocal microscopymigrasomestetraspanintransmission electron microscopy

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Area of Science:

  • Cell Biology
  • Organelle Discovery

Background:

  • Migrating cells leave behind retraction fibers.
  • A novel pomegranate-like structure, the migrasome, is discovered on these fibers.
  • Migrasome production correlates with cell migration.

Approach:

  • This review discusses the functions, mechanisms, and potential applications of migrasomes.
  • Detailed examination of migrasome's role in cellular processes.

Key Points:

  • Migrasomes are newly identified organelles produced by migrating cells.
  • Functions include releasing signaling molecules, transporting damaged mitochondria, and transferring mRNA/proteins.
  • Highly correlated with cell migration.

Conclusions:

  • Migrasomes represent a significant discovery in cell biology.
  • Understanding migrasomes opens avenues for potential therapeutic applications.
  • Further research into migrasome mechanisms is warranted.