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Related Concept Videos

Cancer Cell Migration through Invadopodia01:35

Cancer Cell Migration through Invadopodia

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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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Ras and Rho are small monomeric GTPases that act downstream of receptor tyrosine kinase (RTK) and regulate various cellular processes. These GTPases switch between active and inactive states by binding to guanine nucleotides.
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GTPases and their Regulation02:14

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Guanine nucleotide-binding proteins (G-proteins), also known as GTPases, are a superfamily of proteins that regulate many cellular processes, such as cell signaling, vesicular transport, and the regulation of cell shape and motility. Mutation or dysfunction of these proteins can lead to disease. There are around 40,000 known G-proteins that can broadly be classified into two groups ‒  small G-proteins consisting of a single domain and large multi-domain G-proteins.
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Vesicles incorporate different coat protein subunits in different cell locations, which changes the properties of the coat, such as the shape and geometry of the transport vesicles. Thus, vesicle coat proteins also play a significant role in cargo selection.
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Detection of Small GTPase Prenylation and GTP Binding Using Membrane Fractionation and GTPase-linked Immunosorbent Assay
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Small GTPases all over invadosomes.

Paul Rivier1, Michel Mubalama1, Olivier Destaing1

  • 1Team DYSAD, Dept2, Institute for Advanced Biosciences, Centre de Recherche Université Grenoble Alpes, Inserm U 1209, CNRS UMR 5309, Grenoble, France.

Small Gtpases
|January 25, 2021
PubMed
Summary
This summary is machine-generated.

Small GTPases regulate invadosomes, crucial for cell invasion and metastasis. Their coordinated actions and precise timing are vital for cell motility and extracellular matrix degradation during these processes.

Keywords:
Small GTPaseinvadopodiainvadosomeslinear invadosomespodosomesspatiotemporal signalling

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Area of Science:

  • Cell Biology
  • Molecular Biology
  • Cancer Research

Background:

  • Cell invasion is fundamental to development and metastasis, enabling cell migration and tissue penetration.
  • Invadosomes, 3D acto-adhesive structures, drive cell invasion by degrading the extracellular matrix via protease delivery.
  • Intracellular RHO GTPases are key regulators of invadosome function, orchestrating motility and matrix degradation.

Purpose of the Study:

  • To review the synergistic roles of small GTPases in invadosome biology.
  • To highlight the importance of spatiotemporal regulation of small GTPases in invadosome dynamics.

Main Methods:

  • Literature review focusing on invadosome biology and RHO GTPase regulation.
  • Synthesis of current research on small GTPase interplay in cell invasion.

Main Results:

  • Small GTPases exhibit synergistic activities essential for invadosome formation and function.
  • Spatiotemporal control of small GTPases critically impacts invadosome dynamics and cell invasion.

Conclusions:

  • The coordinated action of RHO GTPases is indispensable for invadosome-mediated cell invasion.
  • Understanding small GTPase regulation offers insights into therapeutic strategies for invasive diseases.