Spindle assembly checkpoint insensitivity allows meiosis‐II despite chromosomal defects in aged eggs

AI Mihajlović, C Byers, L Reinholdt, G FitzHarris - EMBO reports, 2023 - embopress.org
Chromosome segregation errors in mammalian oocyte meiosis lead to developmentally
compromised aneuploid embryos and become more common with advancing maternal age …

Evidence that a defective spindle assembly checkpoint is not the primary cause of maternal age-associated aneuploidy in mouse eggs

FE Duncan, T Chiang, RM Schultz… - Biology of …, 2009 - academic.oup.com
Advanced maternal age is unequivocally associated with increased aneuploidy in human
eggs and infertility, but the molecular basis for this phenomenon is unknown. An age …

How oocytes try to get it right: spindle checkpoint control in meiosis

SA Touati, K Wassmann - Chromosoma, 2016 - Springer
The generation of a viable, diploid organism depends on the formation of haploid gametes,
oocytes, and spermatocytes, with the correct number of chromosomes. Halving the genome …

Destabilization of spindle assembly checkpoint causes aneuploidy during meiosis II in murine post-ovulatory aged oocytes

G Shimoi, M Tomita, M Kataoka… - Journal of Reproduction …, 2019 - jstage.jst.go.jp
Mammalian oocyte quality degrades over time after ovulation in vitro, which can cause fatal
defects such as chromosomal aneuploidy. As various oocyte manipulations employed in …

DNA damage-induced metaphase I arrest is mediated by the spindle assembly checkpoint and maternal age

P Marangos, M Stevense, K Niaka, M Lagoudaki… - Nature …, 2015 - nature.com
In mammalian oocytes DNA damage can cause chromosomal abnormalities that potentially
lead to infertility and developmental disorders. However, there is little known about the …

Spindle assembly checkpoint regulation of chromosome segregation in mammalian oocytes

Z Polanski - Reproduction, Fertility and Development, 2013 - CSIRO Publishing
The spindle assembly checkpoint (SAC) is a surveillance mechanism that monitors the
quality of the spindle during division and blocks anaphase entry in the presence of …

Reduced ability to recover from spindle disruption and loss of kinetochore spindle assembly checkpoint proteins in oocytes from aged mice

Y Yun, JE Holt, S Lane, E McLaughlin, J Merriman… - Cell cycle, 2014 - Taylor & Francis
Currently, maternal aging in women, based on mouse models, is thought to raise oocyte
aneuploidy rates, because chromosome cohesion deteriorates during prophase arrest, and …

Non-canonical function of spindle assembly checkpoint proteins after APC activation reduces aneuploidy in mouse oocytes

SIR Lane, KT Jones - Nature communications, 2014 - nature.com
The spindle assembly checkpoint (SAC) prevents aneuploidy by coupling anaphase onset,
through anaphase-promoting complex (APC) activation, with chromosome attachment to …

Xenopus oocyte meiosis lacks spindle assembly checkpoint control

H Shao, R Li, C Ma, E Chen, XJ Liu - Journal of Cell Biology, 2013 - rupress.org
The spindle assembly checkpoint (SAC) functions as a surveillance mechanism to detect
chromosome misalignment and to delay anaphase until the errors are corrected. The SAC is …

Meiotic defects in human oocytes: Potential causes and clinical implications

T Wu, H Gu, Y Luo, L Wang, Q Sang - Bioessays, 2022 - Wiley Online Library
Meiotic defects cause abnormal chromosome segregation leading to aneuploidy in
mammalian oocytes. Chromosome segregation is particularly error‐prone in human …