Results 81 to 90 of about 995,917 (290)

MUS81 nuclease activity is essential for replication stress tolerance and chromosome segregation in BRCA2-deficient cells

open access: yesNature Communications, 2017
Failure to restart replication forks stalled at genomic regions that are difficult to replicate or contain endogenous DNA lesions is a hallmark of BRCA2 deficiency.
Xianning Lai   +7 more
semanticscholar   +1 more source

Chromosome Segregation: Seeing Is Believing [PDF]

open access: yesCurrent Biology, 2005
For chromosome segregation in mitosis, each centromere directs assembly of a complex, proteinaceous structure - the kinetochore, which connects the chromosome to microtubules of the mitotic spindle. A recent study has provided important new insights into the mechanism by which kinetochores capture spindle microtubules.
openaire   +3 more sources

Super-Resolution Mapping of Neuronal Circuitry With an Index-Optimized Clearing Agent

open access: yesCell Reports, 2016
Super-resolution imaging deep inside tissues has been challenging, as it is extremely sensitive to light scattering and spherical aberrations. Here, we report an optimized optical clearing agent for high-resolution fluorescence imaging (SeeDB2).
Meng-Tsen Ke   +7 more
doaj   +1 more source

Spindle asymmetry drives non-Mendelian chromosome segregation

open access: yesScience, 2017
How selfish genes get their way At the core of Mendelian genetics is the concept that gametes are equally likely to carry either of the two parental copies of a gene.
Takashi Akera   +8 more
semanticscholar   +1 more source

The role of CSE1L expression in cervical lymph node metastasis of larynx tumors

open access: yesBrazilian Journal of Otorhinolaryngology, 2021
Introduction: According to international reports, 30–40% of all head and neck cancers are larynx cancers, comprising 1–2.5% of all cancer types. Cervical nodal involvement has been reported to be 40% and 65% in T3 and T4 cases, respectively.
Tuncay Tunccan   +7 more
doaj  

Chromosome segregation occurs by microtubule pushing in oocytes

open access: yesNature Communications, 2017
During cell division, spindle microtubules ensure an equal repartition of chromosomes between the two daughter cells. While the kinetochore-dependent mechanisms that drive mitotic chromosome segregation are well understood, in oocytes of most species ...
K. Laband   +6 more
semanticscholar   +1 more source

Spindle mechanics and chromosome segregation

open access: yesMolecular Biology of the Cell, 2019
The Minisymposium “Spindle Mechanics and Chromosome Segregation” featured new and exciting findings related to the spindle and chromosomes during mitosis and meiosis. It covered a range of topics including spindle architecture and mechanics, kinetochore–microtubule interactions, chromosome dynamics at mitotic entry and exit, as well as mitotic errors ...
Daniel W. Gerlich, Iva M. Tolić
openaire   +4 more sources

Tension can directly suppress Aurora B kinase-triggered release of kinetochore-microtubule attachments

open access: yesNature Communications, 2022
Tension stabilizes properly attached microtubules to kinetochores during chromosome segregation, and lack of tension leads to release. Here the authors show that tension directly suppresses Aurora B kinase mediated destabilization of reconstituted ...
Anna K. de Regt   +3 more
doaj   +1 more source

Oxidative stress in oocytes during midprophase induces premature loss of cohesion and chromosome segregation errors

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2016
Significance Chromosome segregation errors during female meiosis, the leading cause of birth defects and miscarriages, increase dramatically as women age.
Adrienne T. Perkins   +3 more
semanticscholar   +1 more source

Depletion or cleavage of cohesin during anaphase differentially affects chromatin structure and segregation

open access: yeseLife, 2022
Chromosome segregation requires both the separation of sister chromatids and the sustained condensation of chromatids during anaphase. In yeast cells, cohesin is not only required for sister chromatid cohesion but also plays a major role determining the ...
Jonay Garcia-Luis   +4 more
doaj   +1 more source

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