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1.
The Korean Journal of Parasitology ; : 185-189, 2019.
Article Dans Anglais | WPRIM | ID: wpr-761721

Résumé

To identify the component(s) involved in cell cycle control in the protozoan Giardia lamblia, cells arrested at the G1/S- or G2-phase by treatment with nocodazole and aphidicolin were prepared from the synchronized cell cultures. RNA-sequencing analysis of the 2 stages of Giardia cell cycle identified several cell cycle genes that were up-regulated at the G2-phase. Transcriptome analysis of cells in 2 distinct cell cycle stages of G. lamblia confirmed previously reported components of cell cycle (PcnA, cyclin B, and CDK) and identified additional cell cycle components (NEKs, Mad2, spindle pole protein, and CDC14A). This result indicates that the cell cycle machinery operates in this protozoan, one of the earliest diverging eukaryotic lineages.


Sujets)
Aphidicoline , Techniques de culture cellulaire , Cycle cellulaire , Points de contrôle du cycle cellulaire , Cycline B , Analyse de profil d'expression de gènes , Gènes cdc , Giardia lamblia , Giardia , Nocodazole , Pôles du fuseau
2.
Endocrinology and Metabolism ; : 53-57, 2015.
Article Dans Anglais | WPRIM | ID: wpr-150119

Résumé

BACKGROUND: Mutations in centrosomal protein genes have been identified in a number of genetic diseases in brain development, including microcephaly. Centrosomal P4.1-associated protein (CPAP) is one of the causal genes implicated in primary microcephaly. We previously proposed that CPAP is essential for mother centriole maturation during mitosis. METHODS: We immunostained CPAP-depleted cells using the ninein antibody, which selectively detects subdistal appendages in mature mother centrioles. RESULTS: Ninein signals were significantly impaired in CPAP-depleted cells. CONCLUSION: The results suggest that CPAP is required for mother centriole maturation in mammalian cells. The selective absence of centriolar appendages in young mother centrioles may be responsible for asymmetric spindle pole formation in CPAP-depleted cells.


Sujets)
Humains , Encéphale , Cycle cellulaire , Centrioles , Centrosome , Microcéphalie , Mitose , Mères , Pôles du fuseau
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