Results 191 to 200 of about 4,116 (226)
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The spindle assembly checkpoint
Current Opinion in Cell Biology, 1996The spindle assembly checkpoint monitors proper chromosome attachment to spindle microtubules and is conserved from yeast to humans. Checkpoint components reside on kinetochores of chromosomes and show changes in phosphorylation and localization as cells proceed through mitosis.
Andrew W. Murray, Adam D. Rudner
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The Spindle Assembly and Spindle Position Checkpoints
Annual Review of Genetics, 2003▪ Abstract  The mitotic spindle segregates chromosomes to opposite ends of the cell in preparation for cell division. Chromosome attachment to the spindle is monitored by the spindle assembly checkpoint, and at least in yeast cells, penetration of one spindle pole into the bud is monitored by the spindle position checkpoint.
Daniel J. Burke, Daniel J. Lew
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Flies without a spindle checkpoint
Nature Cell Biology, 2007Mad2 has a key role in the spindle-assembly checkpoint (SAC) - the mechanism delaying anaphase onset until all chromosomes correctly attach to the spindle. Here, we show that unlike every other reported case of SAC inactivation in metazoans, mad2-null Drosophila are viable and fertile, and their cells almost always divide correctly despite having no ...
Buffin, Eulalie +2 more
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Current Opinion in Genetics & Development, 1999
Prior to sister-chromatid separation, the spindle checkpoint inhibits cell-cycle progression in response to a signal generated by mitotic spindle damage or by chromosomes that have not attached to microtubules. Recent work has shown that the spindle checkpoint inhibits cell-cycle progression by direct binding of components of the spindle checkpoint ...
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Prior to sister-chromatid separation, the spindle checkpoint inhibits cell-cycle progression in response to a signal generated by mitotic spindle damage or by chromosomes that have not attached to microtubules. Recent work has shown that the spindle checkpoint inhibits cell-cycle progression by direct binding of components of the spindle checkpoint ...
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Meiotic spindle, spindle checkpoint and embryonic aneuploidy
Frontiers in Bioscience, 2006In mitosis, a spindle checkpoint plays important roles at the metaphase-anaphase transition to ensure the formation of a bipolar spindle, the completion of connecting chromosomes to microtubules and the alignment of all chromosomes at the spindle equator before initiation of anaphase.
Wei-Hua Wang, Qing-Yuan Sun
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Anaphase Inactivation of the Spindle Checkpoint
Science, 2006The spindle checkpoint delays cell cycle progression until microtubules attach each pair of sister chromosomes to opposite poles of the mitotic spindle. Following sister chromatid separation, however, the checkpoint ignores chromosomes whose kinetochores are attached to only one spindle pole, a state that activates the checkpoint prior to metaphase. We
Janet B. Meehl +4 more
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The Spindle Checkpoint: Assays for the Analysis of Spindle Checkpoint Arrest and Recovery
2009The spindle checkpoint is a surveillance mechanism that ensures the fidelity of chromosome segregation by inhibiting anaphase onset until all chromosomes have established stable bipolar attachments. Here we describe a number of protocols that can be used to assay the ability of budding and fission yeast cells to (1) establish and maintain a spindle ...
Kevin G. Hardwick, Josefin Fernius
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Complexity in the spindle checkpoint
Current Opinion in Genetics & Development, 2000Cell viability requires accurate chromosome segregation at mitosis. The spindle checkpoint ensures that anaphase is not attempted until the sister chromatids of each chromosome are attached to spindle microtubules from opposite poles. The checkpoint mechanism involves a signal transduction cascade that is more complex than was originally envisioned.
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The Spindle Checkpoint and Chromosomal Stability
2006Normal human somatic cells contain 46 chromosomes (22 pairs of autosomes and two sex chromosomes). Chromosome missegregation leads to abnormal numbers of chromosomes or aneuploidy. This form of genetic instability alters the dosages of large subsets of genes, which can result in severe disease phenotypes. Most human cancer cells are aneuploid.
Hongtao Yu, W. Qi
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Spindle-Assembly Checkpoint and Gastrointestinal Cancer
New England Journal of Medicine, 2011To the Editor: Rio Frio et al. (Dec. 30 issue)1 report on a germline homozygous mutation in the spindle-assembly checkpoint gene BUB1B in a patient with a nonclassic form of the mosaic variegated aneuploidy syndrome, resulting in reduced expression, increased levels of constitutive aneuploidy, and multiple gastrointestinal neoplasms starting at 34 ...
de Voer, R.M. +3 more
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