Aneuploidy during the onset of mouse embryo development

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985904%3A_____%2F20%3A00533523" target="_blank" >RIV/67985904:_____/20:00533523 - isvavai.cz</a>

Výsledek na webu

<a href="https://asep.lib.cas.cz/arl-cav/cs/csg/?repo=crepo1&key=46629010355" target="_blank" >https://asep.lib.cas.cz/arl-cav/cs/csg/?repo=crepo1&key=46629010355</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1530/REP-20-0086" target="_blank" >10.1530/REP-20-0086</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Aneuploidy during the onset of mouse embryo development

Popis výsledku v původním jazyce

Aneuploidy is the most frequent single cause leading into the termination of early development in human and animal reproduction. Although the mouse is frequently used as a model organism for studying the aneuploidy, we have only incomplete information about the frequency of numerical chromosomal aberrations throughout development, usually limited to a particular stage or assumed from the occurrence of micronuclei. In our study, we systematically scored aneuploidy in in vivo mouse embryos, from zygotes up to 16-cell stage, using kinetochore counting assay. We show here that the frequency of aneuploidy per blastomere remains relatively similar from zygotes until 8-cell embryos and then increases in 16-cell embryos. Due to the accumulation of blastomeres, aneuploidy per embryo increases gradually during this developmental period. Our data also revealed that the aneuploidy from zygotes and 2-cell embryos does not propagate further into later developmental stages, suggesting that embryos suffering from aneuploidy are eliminated at this stage. Experiments with reconstituted live embryos revealed, that hyperploid blastomeres survive early development, although they exhibit slower cell cycle progression and suffer frequently from DNA fragmentation and cell cycle arrest.

Název v anglickém jazyce

Aneuploidy during the onset of mouse embryo development

Popis výsledku anglicky

Aneuploidy is the most frequent single cause leading into the termination of early development in human and animal reproduction. Although the mouse is frequently used as a model organism for studying the aneuploidy, we have only incomplete information about the frequency of numerical chromosomal aberrations throughout development, usually limited to a particular stage or assumed from the occurrence of micronuclei. In our study, we systematically scored aneuploidy in in vivo mouse embryos, from zygotes up to 16-cell stage, using kinetochore counting assay. We show here that the frequency of aneuploidy per blastomere remains relatively similar from zygotes until 8-cell embryos and then increases in 16-cell embryos. Due to the accumulation of blastomeres, aneuploidy per embryo increases gradually during this developmental period. Our data also revealed that the aneuploidy from zygotes and 2-cell embryos does not propagate further into later developmental stages, suggesting that embryos suffering from aneuploidy are eliminated at this stage. Experiments with reconstituted live embryos revealed, that hyperploid blastomeres survive early development, although they exhibit slower cell cycle progression and suffer frequently from DNA fragmentation and cell cycle arrest.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10605 - Developmental biology

Projekt

<a href="/cs/project/GA19-24528S" target="_blank" >GA19-24528S: Vztah mezi velikostí buňky a buněčných organel během časného vývoje savčích embryí</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Reproduction

ISSN

1470-1626

e-ISSN

—

Svazek periodika

160

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

773-782

Kód UT WoS článku

000573968800014

EID výsledku v databázi Scopus

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