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Analysis of Protein-protein Interactions and Co-localization Between Components of Gap, Tight, and Adherens Junctions in Murine Mammary Glands
Published on: May 30, 2017
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Plasmalogen mediates integration of adherens junction
Takanori Takahashi1, Masanori Honsho2, Yuichi Abe2
1Graduate School of Systems Life Sciences, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, Japan.
Journal of Biochemistry
|June 26, 2019
Summary
Plasmalogens, vital ether lipids, are crucial for epithelial cell function. This study reveals that a specific plasmalogen, PlsEtn, containing C18-alkenyl residue, enhances E-cadherin localization and delays cell migration, impacting adherens junction integrity.
Area of Science:
- Biochemistry
- Cell Biology
- Molecular Biology
Background:
- Ether glycerolipids, specifically plasmalogens, are abundant in mammalian cells but their function in epithelial cells is not well understood.
- Plasmalogens play critical roles in cellular membranes and signaling pathways.
Purpose of the Study:
- To investigate the role of ethanolamine-plasmalogens (PlsEtn) in epithelial cells.
- To determine the impact of PlsEtn biosynthesis and specific molecular structures on cell migration and cell-cell adhesion.
Main Methods:
- Analysis of PlsEtn biosynthesis in MCF7 cells, an epithelial cell line.
- Investigating the role of alkyl-dihydroxyacetonephosphate synthase (ADAPS) in PlsEtn synthesis.
- Evaluating the effects of ADAPS expression and PlsEtn supplementation (C18-alkenyl vs. C16-alkenyl) on MCF7 cell migration.
- Assessing the localization of E-cadherin in response to PlsEtn.
Main Results:
- MCF7 cells exhibit deficient PlsEtn synthesis due to reduced ADAPS expression.
- Overexpression of ADAPS or supplementation with C18-alkenyl-PlsEtn significantly delays MCF7 cell migration.
- C16-alkenyl-PlsEtn supplementation did not show the same inhibitory effect on migration.
- C18-alkenyl-PlsEtn significantly enhances the localization of E-cadherin to cell-cell junctions.
Conclusions:
- Ethanolamine-plasmalogens (PlsEtn), particularly those with a C18-alkenyl residue, play a significant role in epithelial cell biology.
- C18-alkenyl-PlsEtn influences cell migration and strengthens E-cadherin-mediated adherens junctions, suggesting a role in maintaining epithelial tissue integrity.
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