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Updated: Nov 20, 2025
06:29
Real-Time Monitoring of Aurora kinase A Activation using Conformational FRET Biosensors in Live Cells
Published on: July 30, 2020
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CEP55 promotes cilia disassembly through stabilizing Aurora A kinase
Yu-Cheng Zhang1, Yun-Feng Bai1, Jin-Feng Yuan1
1State Key Laboratory of Proteomics, National Center of Biomedical Analysis, Beijing, China.
The Journal of Cell Biology
|January 21, 2021
Summary
CEP55 regulates cilia disassembly, a process critical for mammalian development. Defects in this process, as seen in Cep55-/- mice with Meckel-Gruber syndrome, lead to ciliopathy and developmental abnormalities.
Area of Science:
- Cell Biology
- Developmental Biology
- Genetics
Background:
- Primary cilia are crucial for development and disease, with assembly defects causing known ciliopathies.
- The role of cilia disassembly in disease pathogenesis remains largely unexplored.
Purpose of the Study:
- To investigate the role of CEP55 in cilia dynamics and its potential involvement in ciliopathy.
- To elucidate the molecular mechanism by which CEP55 regulates cilia disassembly.
Main Methods:
- Generation and analysis of Cep55 knockout (Cep55-/-) mice.
- Phenotypic characterization of Cep55-/- mice, including assessment of cilia length and tissue abnormalities.
- Investigating the interaction of CEP55 with Aurora A kinase and the CCT complex.
Main Results:
- Cep55-/- mice exhibit Meckel-Gruber syndrome phenotypes, including perinatal lethality, polycystic kidneys, and CNS abnormalities.
- Abnormal cilia elongation was observed in tissues of Cep55-/- mice.
- CEP55 stabilizes Aurora A kinase via the CCT complex to promote cilia disassembly.
- CEP55 mutations in Meckel-Gruber syndrome patients impair cilia disassembly.
Conclusions:
- CEP55 is a key regulator of cilia disassembly in vivo.
- Dysfunctional cilia disassembly, mediated by CEP55, contributes to ciliopathy and developmental defects.
- Proper cilia disassembly is essential for normal mammalian development.
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