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Multiple biological processes may be associated with tumorigenesis under NUP88-overexpressed condition
Jiafeng Li1,2, Jinsheng Zhao3, Yue Li1,2
1Department of Anaesthesia, Tianjin Medical University Cancer Institute and Hospital, Key Laboratory of cancer prevention and therapy, Tianjin, China.
Genes, Chromosomes & Cancer
|September 17, 2016
Summary
Overexpression of nucleoporin NUP88 promotes cancer. This study identifies NUP88-associated proteins and reveals its interaction with MISP, impacting mitosis and potentially driving tumorigenesis.
Area of Science:
- Molecular Biology
- Cell Biology
- Proteomics
Background:
- Nucleoporin NUP88 overexpression is linked to numerous cancers.
- The precise mechanisms of NUP88's tumor-promoting activity remain unclear.
Purpose of the Study:
- To elucidate the pathways driving tumorigenesis in conditions of NUP88 overexpression.
- To identify proteins interacting with NUP88 at a subcellular level.
Main Methods:
- Proteomic analysis to identify NUP88-associated proteins.
- Subcellular compartment fractionation.
- Gene ontology analysis.
Main Results:
- The NUP88 interactome is significantly associated with nuclear transport, RNA processing, cell cycle, metabolism, and viral infection.
- NUP88 interacts with MISP, a PLK1 substrate crucial for mitosis.
- NUP88 overexpression inhibits MISP phosphorylation, essential for spindle formation and chromosome segregation.
Conclusions:
- This study provides a comprehensive overview of biological processes potentially driving tumorigenesis due to NUP88 overexpression.
- A novel interaction between NUP88 and MISP is identified, impacting mitotic fidelity.
- The identified NUP88-associated proteins offer a valuable resource for future cancer research.
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