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Related Concept Videos

Phosphoinositides and PIPs01:42

Phosphoinositides and PIPs

Phosphoinositides are a group of phospholipids containing a glycerol backbone with two fatty acid chains and a phosphate attached to a myoinositol sugar ring. The inositol head group extends into the cytoplasm, where it is modified by adding phosphate groups to form phosphatidylinositol phosphates or PIPs.
Different phosphoinositides are synthesized and recruited on the cytosolic face of the plasma membrane. The localization of specific phosphoinositides concentrated in separate membrane...
IP3/DAG Signaling Pathway01:11

IP3/DAG Signaling Pathway

Membrane lipids such as phosphatidylinositol (PI) are precursors for several membrane-bound and soluble second messengers. Specific kinases phosphorylate PI and produce phosphorylated inositol phospholipids. One such inositol phospholipids are the  phosphatidylinositol-4,5 bisphosphate [PI(4,5)P2], present in the inner half of the lipid bilayer. Upon ligand binding, GPCR stimulates Gq proteins to turn on phospholipase Cꞵ. Activated phospholipase Cꞵ cleaves PI(4,5)P2 and produces two-second...
Cell Migration01:09

Cell Migration

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.
Cell Migration01:19

Cell Migration

Cell migration is a process by which the cells move from one location to another, playing an essential role in embryological development, repair and regeneration, immune response, and metastasis. Cells migrate in response to chemical or mechanical signals generated by specific organs or tissues. The overall mechanism includes three steps - polarization, protrusion, and release. Polarization involves the formation of a distinct cell front and rear, which determines the direction of movement.
Cell Polarization by Rho Proteins01:21

Cell Polarization by Rho Proteins

Cell polarity is the asymmetric distribution of cellular and membrane components, making one side of the cell different from the other. This polarity is essential to many processes such as embryogenesis, axon migration, glucose transport across epithelial cells, and directional cell migration. A migrating cell responds to intracellular or extracellular signals via molecular cascades that reorganize the actin cytoskeleton to establish this polarity. In these cells, the Rho family proteins Cdc42,...
Role of Myosin in Cell Migration01:18

Role of Myosin in Cell Migration

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.
Myosin II  is a hexamer comprising two heavy chains with globular heads and coiled-coil tails, two regulatory light chains, and two essential light chains. The ATPase sites on the myosin heads hydrolyze ATP, and the released phosphate generates the force for contraction. It is...

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Related Experiment Video

Updated: Jun 27, 2026

Radiolabeling and Quantification of Cellular Levels of Phosphoinositides by High Performance Liquid Chromatography-coupled Flow Scintillation
10:52

Radiolabeling and Quantification of Cellular Levels of Phosphoinositides by High Performance Liquid Chromatography-coupled Flow Scintillation

Published on: January 6, 2016

Phosphoinositide 3-kinases in cell migration.

Robert J Cain1, Anne J Ridley

  • 1Randall Division of Cell and Molecular Biophysics, School of Biomedical and Health Sciences, King's College London, Guy's Campus, London SE1 1UL, U.K.

Biology of the Cell
|December 6, 2008
PubMed
Summary
This summary is machine-generated.

Phosphoinositide 3-kinases (PI3Ks) are crucial regulators of cell migration, influencing polarization, adhesion, and protrusion. Their roles vary based on stimuli and cell type, with distinct PI3K isoforms mediating specific functions.

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Identification of Inositol Phosphate or Phosphoinositide Interacting Proteins by Affinity Chromatography Coupled to Western Blot or Mass Spectrometry
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Identification of Inositol Phosphate or Phosphoinositide Interacting Proteins by Affinity Chromatography Coupled to Western Blot or Mass Spectrometry

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Methods to Study Mrp4-containing Macromolecular Complexes in the Regulation of Fibroblast Migration
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Methods to Study Mrp4-containing Macromolecular Complexes in the Regulation of Fibroblast Migration

Published on: May 19, 2016

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Last Updated: Jun 27, 2026

Radiolabeling and Quantification of Cellular Levels of Phosphoinositides by High Performance Liquid Chromatography-coupled Flow Scintillation
10:52

Radiolabeling and Quantification of Cellular Levels of Phosphoinositides by High Performance Liquid Chromatography-coupled Flow Scintillation

Published on: January 6, 2016

Identification of Inositol Phosphate or Phosphoinositide Interacting Proteins by Affinity Chromatography Coupled to Western Blot or Mass Spectrometry
08:07

Identification of Inositol Phosphate or Phosphoinositide Interacting Proteins by Affinity Chromatography Coupled to Western Blot or Mass Spectrometry

Published on: July 26, 2019

Methods to Study Mrp4-containing Macromolecular Complexes in the Regulation of Fibroblast Migration
10:43

Methods to Study Mrp4-containing Macromolecular Complexes in the Regulation of Fibroblast Migration

Published on: May 19, 2016

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Biochemistry

Background:

  • Cell migration is a fundamental biological process vital for animal development and function.
  • Phosphoinositide 3-kinases (PI3Ks) are key lipid kinases that modulate cell migration through direct and indirect signaling pathways.
  • PI3K signaling interacts with other pathways, such as Rho GTPase signaling, impacting cellular movement.

Purpose of the Study:

  • To review the regulation of PI3K signaling by pro-migratory stimuli.
  • To elucidate the diverse roles of PI3K-mediated signal transduction in various aspects of cell migration.
  • To highlight the context-dependent and isoform-specific involvement of PI3Ks in cell migration.

Main Methods:

  • Literature review of existing research on PI3K signaling and cell migration.
  • Analysis of studies investigating PI3K involvement at different stages of cell migration.
  • Synthesis of evidence on PI3K isoform-specific functions in cell polarization and migration.

Main Results:

  • PI3K signaling is dynamically regulated by external stimuli during cell migration.
  • The contribution of PI3Ks to cell migration is cell-type and stimulus-dependent.
  • Different PI3K isoforms exhibit distinct roles in cell polarization and the migratory process.

Conclusions:

  • PI3K signaling pathways are integral to the complex process of cell migration.
  • Understanding PI3K regulation and function is critical for deciphering cell movement dynamics.
  • Further research into PI3K isoform specificity can reveal novel therapeutic targets for migration-related disorders.