Retromer: multipurpose sorting and specialization in polarized transport
1Laboratory of Epithelial Cell Biology, Centro de Investigación Príncipe Felipe, C/E.P. Avda. Autopista del Saler, Valencia, Spain.
International Review of Cell and Molecular Biology
|December 17, 2008
Summary
Retromer, a protein complex involving sorting nexins (SNXs), is crucial for recycling receptors from endosomes to the Golgi. Its functions in protein transport are vital for cell growth, development, and disease.
Area of Science:
- Cell Biology
- Molecular Biology
- Biochemistry
Background:
- Retromer is an evolutionarily conserved protein complex essential for endosome-to-Golgi retrieval of lysosomal hydrolase receptors.
- Sorting nexins (SNXs), such as SNX1 and SNX2, cooperate with retromer by deforming membranes to facilitate cargo sorting.
- Retromer and SNXs play roles in endosomal protein recycling and targeting to specialized plasma membrane domains in polarized cells.
Purpose of the Study:
- To discuss the diverse functions of the retromer complex across various model systems.
- To highlight the implications of retromer and SNX functions in cellular processes and disease.
- To focus on the role of retromer in polarized transport.
Main Methods:
- Review of existing research across various model organisms.
- Analysis of retromer and SNX involvement in protein transport pathways.
- Examination of retromer's role in polarized cellular functions.
Main Results:
- Retromer is critical for the retrieval of specific receptors from endosomes to the Golgi apparatus.
- SNX1/SNX2 dimers contribute to membrane deformation, aiding retromer in cargo sorting.
- Dysregulation of retromer and SNX function impacts development, cell adhesion, and migration.
Conclusions:
- Retromer and SNXs are key regulators of intracellular trafficking with broad biological significance.
- Understanding retromer's role in polarized transport is crucial for comprehending cell growth, development, and disease.
- Further research into retromer function can reveal therapeutic targets for various conditions.
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