Related Experiment Video
Updated: Jun 13, 2025
06:42
Author Spotlight: Understanding Disease Mechanisms Through Real-Time Analysis of T-Cell Migration
Published on: May 24, 2024
1.3K
The Role of the CXCL12/CXCR4 Signaling Pathway in Regulating Cellular Migration
Austin N Worden1, Emma Grace Pittard1, Matt Stern2
1Department of Cell Biology and Anatomy, University of South Carolina, School of Medicine, 6311 Garners Ferry Rd., Columbia, SC 29209, USA.
Summary
The CXCL12/CXCR4 pathway drives adipose-derived stem cell (ADSC) self-assembly into toroidal constructs on hydrogels. This pathway is crucial for cell migration and organization, with implications for tissue engineering and cancer research.
Area of Science:
- Biomedical Engineering
- Stem Cell Biology
- Cell Signaling
Background:
- Adipose-derived stem cells (ADSCs) can self-assemble into organized structures.
- The CXCL12/CXCR4 signaling pathway plays roles in cell migration and tissue development.
- Understanding cell-matrix interactions is key for tissue engineering applications.
Purpose of the Study:
- To investigate the role of the CXCL12/CXCR4 pathway in ADSC self-assembling toroidal construct formation.
- To identify key signaling pathways regulating ADSC migration and organization within hydrogels.
- To explore potential implications for tissue engineering and cancer research.
Main Methods:
- Culture of ADSCs on collagen hydrogels to form toroidal constructs.
- Gene expression profiling and immunofluorescence to analyze pathway activation.
- Targeted inhibition of signaling pathways (PI3K, N-Cadherin, Ras/Raf, ERK1/2) and Western blot analysis.
- Coculture studies with 4T1 breast cancer cells.
Main Results:
- ADSCs formed toroids on hydrogel surfaces but not within the matrix.
- The CXCL12/CXCR4 pathway was significantly upregulated in toroid-forming conditions.
- PI3K pathway inhibition delayed ADSC migration, while other pathway inhibitions affected migration over longer periods.
- CXCL12 was found in 4T1 cells in coculture, suggesting altered signaling.
Conclusions:
- The CXCL12/CXCR4 pathway is essential for ADSC self-assembly into toroidal constructs.
- The PI3K pathway is a critical regulator of cell migration in this process.
- This study provides insights into cell organization and migration relevant to tissue engineering and cancer biology.
Related Concept Videos
01:09Cell Migration
16.9K
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.
16.9K
01:21Chemotaxis and Direction of Cell Migration
3.3K
Cells can detect chemical cues in their environment and reorganize the cytoskeleton to migrate toward them or away from them. This directional migration, called chemotaxis, is essential during embryogenesis and development, immune response, tissue repair and regeneration, and reproduction. These chemical cues can either attract or repel the cell's movement. For example, axon development is determined by a combination of chemoattractants and chemorepellents that direct the growing axon...
3.3K
01:32Cytoskeletal Coordination in Cell Migration
4.7K
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...
4.7K
01:21Cell Polarization by Rho Proteins
2.7K
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,...
2.7K
01:18Role of Myosin in Cell Migration
2.2K
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....
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....
2.2K
01:17Intracellular Signaling Affects Focal Adhesions
2.6K
Integrins act both as extracellular input receivers and as intracellular processing activators. As their name suggests, integrins are entirely integrated into the membrane structure. Their hydrophobic membrane-spanning regions interact with the phospholipid bilayer's hydrophobic region. These membrane receptors provide extracellular attachment sites for effectors like hormones and growth factors. They activate intracellular response cascades when their effectors are bound and active.
Some...
Some...
2.6K