Chromosome Division in Early Embryos-Is Everything under
Control? And Is the Cell Size Important?

J 2024

Chromosome Division in Early Embryos-Is Everything under Control? And Is the Cell Size Important?

HORÁKOVÁ, Adéla, Markéta KONEČNÁ and Martin ANGER

Basic information

Original name

Chromosome Division in Early Embryos-Is Everything under Control? And Is the Cell Size Important?

Authors

HORÁKOVÁ, Adéla (203 Czech Republic, belonging to the institution), Markéta KONEČNÁ (203 Czech Republic, belonging to the institution) and Martin ANGER (203 Czech Republic)

Edition

International Journal of Molecular Sciences, MDPI, 2024, 1661-6596

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10605 Developmental biology

Country of publisher

Switzerland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Impact factor

Impact factor: 5.600 in 2022

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.3390/ijms25042101

UT WoS

001172049100001

Keywords in English

spindle; chromosome division; segregation errors; spindle assembly checkpoint; embryo; CDK1; cell size; aneuploidy

Abstract

V originále

Chromosome segregation in female germ cells and early embryonic blastomeres is known to be highly prone to errors. The resulting aneuploidy is therefore the most frequent cause of termination of early development and embryo loss in mammals. And in specific cases, when the aneuploidy is actually compatible with embryonic and fetal development, it leads to severe developmental disorders. The main surveillance mechanism, which is essential for the fidelity of chromosome segregation, is the Spindle Assembly Checkpoint (SAC). And although all eukaryotic cells carry genes required for SAC, it is not clear whether this pathway is active in all cell types, including blastomeres of early embryos. In this review, we will summarize and discuss the recent progress in our understanding of the mechanisms controlling chromosome segregation and how they might work in embryos and mammalian embryos in particular. Our conclusion from the current literature is that the early mammalian embryos show limited capabilities to react to chromosome segregation defects, which might, at least partially, explain the widespread problem of aneuploidy during the early development in mammals.

Citovat

HORÁKOVÁ, Adéla, Markéta KONEČNÁ and Martin ANGER. Chromosome Division in Early Embryos-Is Everything under Control? And Is the Cell Size Important? International Journal of Molecular Sciences. MDPI, 2024, vol. 25, No 4, p. 1-14. ISSN 1661-6596. Available from: https://dx.doi.org/10.3390/ijms25042101.

@article{2387599,
   author = {Horáková, Adéla and Konečná, Markéta and Anger, Martin},
   article_number = {4},
   doi = {http://dx.doi.org/10.3390/ijms25042101},
   keywords = {spindle; chromosome division; segregation errors; spindle assembly checkpoint; embryo; CDK1; cell size; aneuploidy},
   language = {eng},
   issn = {1661-6596},
   journal = {International Journal of Molecular Sciences},
   title = {Chromosome Division in Early Embryos-Is Everything under Control? And Is the Cell Size Important?},
   url = {https://www.mdpi.com/1422-0067/25/4/2101},
   volume = {25},
   year = {2024}
}

TY  - JOUR
ID  - 2387599
AU  - Horáková, Adéla - Konečná, Markéta - Anger, Martin
PY  - 2024
TI  - Chromosome Division in Early Embryos-Is Everything under Control? And Is the Cell Size Important?
JF  - International Journal of Molecular Sciences
VL  - 25
IS  - 4
SP  - 1-14
EP  - 1-14
PB  - MDPI
SN  - 16616596
KW  - spindle
KW  - chromosome division
KW  - segregation errors
KW  - spindle assembly checkpoint
KW  - embryo
KW  - CDK1
KW  - cell size
KW  - aneuploidy
UR  - https://www.mdpi.com/1422-0067/25/4/2101
N2  - Chromosome segregation in female germ cells and early embryonic blastomeres is known to be highly prone to errors. The resulting aneuploidy is therefore the most frequent cause of termination of early development and embryo loss in mammals. And in specific cases, when the aneuploidy is actually compatible with embryonic and fetal development, it leads to severe developmental disorders. The main surveillance mechanism, which is essential for the fidelity of chromosome segregation, is the Spindle Assembly Checkpoint (SAC). And although all eukaryotic cells carry genes required for SAC, it is not clear whether this pathway is active in all cell types, including blastomeres of early embryos. In this review, we will summarize and discuss the recent progress in our understanding of the mechanisms controlling chromosome segregation and how they might work in embryos and mammalian embryos in particular. Our conclusion from the current literature is that the early mammalian embryos show limited capabilities to react to chromosome segregation defects, which might, at least partially, explain the widespread problem of aneuploidy during the early development in mammals.
ER  -

HORÁKOVÁ, Adéla, Markéta KONEČNÁ and Martin ANGER. Chromosome Division in Early Embryos-Is Everything under Control? And Is the Cell Size Important? \textit{International Journal of Molecular Sciences}. MDPI, 2024, vol.~25, No~4, p.~1-14. ISSN~1661-6596. Available from: https://dx.doi.org/10.3390/ijms25042101.

Detailed Information on Publication Record