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Measuring and modeling polymer concentration profiles near spindle boundaries argues that spindle microtubules regulate their own nucleation

open access: yesNew Journal of Physics, 2018
Spindles are self-organized microtubule-based structures that segregate chromosomes during cell division. The mass of the spindle is controlled by the balance between microtubule turnover and nucleation. The mechanisms that control the spatial regulation
Bryan Kaye   +5 more
doaj   +2 more sources

Three-dimensional structure of kinetochore-fibers in human mitotic spindles

open access: yeseLife, 2022
During cell division, kinetochore microtubules (KMTs) provide a physical linkage between the chromosomes and the rest of the spindle. KMTs in mammalian cells are organized into bundles, so-called kinetochore-fibers (k-fibers), but the ultrastructure of ...
Robert Kiewisz   +5 more
doaj   +1 more source

The effect of interictal epileptic discharges and following spindles on motor sequence learning in epilepsy patients

open access: yesFrontiers in Neurology, 2022
PurposeInterictal epileptic discharges (IEDs) are known to affect cognitive function in patients with epilepsy, but the mechanism has not been elucidated.
Toshiki Okadome   +8 more
doaj   +1 more source

Coupling between motor cortex and striatum increases during sleep over long-term skill learning

open access: yeseLife, 2021
The strength of cortical connectivity to the striatum influences the balance between behavioral variability and stability. Learning to consistently produce a skilled action requires plasticity in corticostriatal connectivity associated with repeated ...
Stefan M Lemke   +5 more
doaj   +1 more source

Microtubule rescue at midzone edges promotes overlap stability and prevents spindle collapse during anaphase B

open access: yeseLife, 2022
During anaphase B, molecular motors slide interpolar microtubules to elongate the mitotic spindle, contributing to the separation of chromosomes. However, sliding of antiparallel microtubules reduces their overlap, which may lead to spindle breakage ...
Manuel Lera-Ramirez   +2 more
doaj   +1 more source

Microneedle manipulation of the mammalian spindle reveals specialized, short-lived reinforcement near chromosomes

open access: yeseLife, 2020
The spindle generates force to segregate chromosomes at cell division. In mammalian cells, kinetochore-fibers connect chromosomes to the spindle. The dynamic spindle anchors kinetochore-fibers in space and time to move chromosomes.
Pooja Suresh   +2 more
doaj   +1 more source

RBM14 Modulates Tubulin Acetylation and Regulates Spindle Morphology During Meiotic Maturation in Mouse Oocytes

open access: yesFrontiers in Cell and Developmental Biology, 2021
RBM14 is an RNA-binding protein that regulates spindle integrity in mitosis; however, its functions during meiosis are still unclear. In this study, we discovered that RBM14 expression was down-regulated in oocytes from old mice.
Hao Qin   +20 more
doaj   +1 more source

Loss of PDK1 Induces Meiotic Defects in Oocytes From Diabetic Mice

open access: yesFrontiers in Cell and Developmental Biology, 2021
Maternal diabetes has been shown to impair oocyte quality; however, the underlying mechanisms remain unclear. Here, using a streptozotocin (STZ)-induced diabetic mouse model, we first detected and reduced expression of pyruvate dehydrogenase kinase 1 ...
Juan Ge   +8 more
doaj   +1 more source

Strong static magnetic field delayed the early development of zebrafish [PDF]

open access: yesOpen Biology, 2019
One of the major topics in magnetobiology is the biological effects of strong static magnetic field (SMF) on living organisms. However, there has been a paucity of the comprehensive study of the long-term effects of strong SMF on an animal's development.
Shuchao Ge   +6 more
doaj   +1 more source

A Role of PI3K/Akt Signaling in Oocyte Maturation and Early Embryo Development

open access: yesCells, 2023
A serine/threonine-specific protein kinase B (PKB), also known as Akt, is a key factor in the phosphoinositide 3-kinase (PI3K)/Akt signaling pathway that regulates cell survival, metabolism and proliferation.
Jaroslav Kalous   +2 more
doaj   +1 more source

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