HN1 expression contributes to mitotic fidelity through Aurora A‐PLK1‐Eg5 axis
Abstract Hematological and neurological expressed 1 (HN1) is homolog of Jupiter protein from Drosophila melanogaster where it functions as a microtubule‐associated protein. However, in mammalian cells, HN1 is associated partially with y‐tubulin in centrosomes, Stathmin for stabilizing microtubules, and Cdh1 for regulating Cyclin B1 for cell cycle ...
Gülseren Özduman+3 more
wiley +1 more source
The equatorial position of the metaphase plate ensures symmetric cell divisions
Chromosome alignment in the middle of the bipolar spindle is a hallmark of metazoan cell divisions. When we offset the metaphase plate position by creating an asymmetric centriole distribution on each pole, we find that metaphase plates relocate to the ...
Chia Huei Tan+6 more
doaj +1 more source
Spindle assembly checkpoint strength is linked to cell fate in the Caenorhabditis elegans embryo
The spindle assembly checkpoint (SAC) is a conserved mitotic regulator that preserves genome stability by monitoring kinetochore–microtubule attachments and blocking anaphase onset until chromosome biorientation is achieved.
Abigail R. Gerhold+3 more
semanticscholar +1 more source
Phosphorylation at the Helm: Kinase‐Mediated Regulation of Primary Cilia Assembly and Disassembly
ABSTRACT The primary cilium serves as an antenna of most vertebrate cells and is important for conveying cues from several signaling pathways into appropriate cellular responses during development and homeostasis. Cilia assembly and disassembly processes are thought to be strictly controlled; however, the precise nature of molecular events underlying ...
Andrea Lacigová, Lukáš Čajánek
wiley +1 more source
Insights into mitotic checkpoint by integrating CRISPR and RNAi
Our recent study of the mitotic checkpoint protein BUB1 (budding uninhibited by benzimidazoles 1) revealed several apparent BUB1 knock-out cell lines expressing low levels of BUB1 protein sufficient to support spindle assembly checkpoint activity.
Gang Zhang
doaj +1 more source
Summary In animal cells the centrosome is commonly viewed as the main cellular structure driving microtubule (MT) assembly into the mitotic spindle apparatus.
Nicolas Lecland+10 more
doaj +1 more source
Spindle assembly checkpoint satisfaction occurs via end-on but not lateral attachments under tension
To ensure accurate chromosome segregation, the spindle assembly checkpoint (SAC) prevents anaphase until all kinetochores attach to the spindle. What signals the SAC monitors remains unclear.
Jonathan Kuhn, S. Dumont
semanticscholar +1 more source
A sequential multi-target Mps1 phosphorylation cascade promotes spindle checkpoint signaling
The master spindle checkpoint kinase Mps1 senses kinetochore-microtubule attachment and promotes checkpoint signaling to ensure accurate chromosome segregation.
Zhejian Ji+4 more
doaj +1 more source
Long-Range Repulsion Between Chromosomes in Mammalian Oocyte Spindles [PDF]
During eukaryotic cell division, a microtubule-based structure called the spindle exerts forces on chromosomes, thereby organizing and segregating them Extensive work demonstrates that the forces acting parallel to the spindle axis, including those responsible for separating sister chromatids, are generated by microtubule polymerization and ...
arxiv
Protein Phosphatase 1 inactivates Mps1 to ensure efficient Spindle Assembly Checkpoint silencing
Faithfull genome partitioning during cell division relies on the Spindle Assembly Checkpoint (SAC), a conserved signaling pathway that delays anaphase onset until all chromosomes are attached to spindle microtubules.
Margarida Moura+7 more
semanticscholar +1 more source