Molecular organization, regulation and function of tricellular junctions
Tomohito Higashi1, Hideki Chiba1
1Department of Basic Pathology, Fukushima Medical University, Fukushima 960-1295, Japan.
Biochimica Et Biophysica Acta. Biomembranes
|December 9, 2019
Summary
Tricellular junctions, where three cells meet, are vital for epithelial barrier function and mechanical strength. Emerging research reveals their diverse roles in cellular and physiological processes.
Area of Science:
- Cell Biology
- Epithelial Biology
- Junction Biology
Background:
- Tricellular junctions are specialized structures where three cells converge apically.
- They are crucial for maintaining epithelial barrier integrity and mechanical stability.
- Recent discoveries highlight novel cellular and physiological functions of these junctions.
Purpose of the Study:
- To review the architecture and molecular composition of tricellular junctions.
- To discuss the multifaceted biological roles of tricellular junctions.
- To provide an overview of current research on tricellular junction functions.
Main Methods:
- Literature review of recent studies on tricellular junctions.
- Analysis of structural and molecular data.
- Synthesis of findings on biological processes involving tricellular junctions.
Main Results:
- Tricellular junctions possess a unique architecture involving specific molecular components.
- These junctions actively participate in regulating epithelial permeability and tissue mechanics.
- New functions in signaling pathways and cellular responses have been identified.
Conclusions:
- Tricellular junctions are key regulators of epithelial homeostasis and tissue integrity.
- Understanding their molecular basis and diverse functions is critical for various biological contexts.
- Further research will continue to unveil the complex roles of tricellular junctions.
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