Polarity protein complex Scribble/Lgl/Dlg and epithelial cell barriers
Wen-Hui Su1, Dolores D Mruk, Elissa W P Wong
1Center for Biomedical Research, Population Council, New York New York, USA.
Advances in Experimental Medicine and Biology
|February 12, 2013
Summary
The Scribble complex, comprising Scribble, Lethal giant larvae (Lgl), and Discs large (Dlg) proteins, regulates cell polarity and adhesion. Its role in blood-testis barrier (BTB) function is crucial for reproductive biology.
Area of Science:
- Cell Biology
- Developmental Biology
- Reproductive Biology
Background:
- The Scribble complex (Scribble, Lgl, Dlg) is a conserved module regulating cell polarity in epithelia.
- It interacts with other polarity modules (Par, Crumbs) and influences cell proliferation and junctions.
- Scribble complex proteins are recognized as tumor suppressors.
Purpose of the Study:
- To update on the Scribble polarity complex.
- To elucidate its modulation of cell adhesion.
- To emphasize its role in Sertoli cell blood-testis barrier (BTB) function.
Main Methods:
- Review of existing literature on the Scribble complex.
- Analysis of conserved functions across species (Drosophila, C. elegans, mammals).
- Focus on Scribble complex involvement in epithelial cell adhesion and BTB dynamics.
Main Results:
- Scribble complex components are conserved and essential for cell polarity.
- They play significant roles in cell proliferation, adherens junction (AJ), and tight junction (TJ) assembly.
- Emerging evidence highlights their critical function in maintaining the integrity of blood-tissue barriers, including the BTB.
Conclusions:
- The Scribble complex is vital for cell polarity, adhesion, and tissue barrier function.
- Understanding its role in BTB is key for reproductive biology research.
- Further studies in model organisms can inform human reproductive health research.
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