Dynamic blastomere behaviour reflects human embryo ploidy by the four-cell stage.
Dynamic blastomere behaviour reflects human embryo ploidy by the four-cell stage.
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DOI:
10.1038/ncomms2249
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发表时间:
2012
影响因子:
16.6
通讯作者:
中科院分区:
文献类型:
--
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Previous studies have demonstrated that aneuploidy in human embryos is surprisingly frequent with 50–80% of cleavage-stage human embryos carrying an abnormal chromosome number. Here we combine non-invasive time-lapse imaging with karyotypic reconstruction of all blastomeres in four-cell human embryos to address the hypothesis that blastomere behaviour may reflect ploidy during the first two cleavage divisions. We demonstrate that precise cell cycle parameter timing is observed in all euploid embryos to the four-cell stage, whereas only 30% of aneuploid embryos exhibit parameter values within normal timing windows. Further, we observe that the generation of human embryonic aneuploidy is complex with contribution from chromosome-containing fragments/micronuclei that frequently emerge and may persist or become reabsorbed during interphase. These findings suggest that cell cycle and fragmentation parameters of individual blastomeres are diagnostic of ploidy, amenable to automated tracking algorithms, and likely of clinical relevance in reducing transfer of embryos prone to miscarriage. Abnormal human embryo development is implicated in the embryo arrest observed during in vitro fertilization. Chavez and colleagues perform time-lapse imaging on human embryos and find that chromosomally abnormal embryos exhibit diverse cell cycle parameters that may contribute to arrest.
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影响因子:
3.7
作者:
Galán A;Montaner D;Póo ME;Valbuena D;Ruiz V;Aguilar C;Dopazo J;Simón C
通讯作者:
Simón C
影响因子:
4
作者:
Lemmen, J. G.;Agerholm, I.;Ziebe, S.
通讯作者:
Ziebe, S.
DOI:
10.1083/jcb.144.5.927
发表时间:
1999-03-08
期刊:
The Journal of cell biology
影响因子:
--
作者:
Gönczy P;Schnabel H;Kaletta T;Amores AD;Hyman T;Schnabel R
通讯作者:
Schnabel R
DOI:
10.1073/pnas.98.4.1655
发表时间:
2001-02-13
影响因子:
11.1
作者:
Hardy, K;Spanos, S;Stark, J
通讯作者:
Stark, J
影响因子:
1.7
作者:
Harrison, RH;Kuo, HC;Ogilvie, CM
通讯作者:
Ogilvie, CM