Abnormal X‐Chromosome Dosage Compensation as a Possible Cause of Early Developmental Failure in Mice

Abnormal X‐Chromosome Dosage Compensation as a Possible Cause of Early Developmental Failure in Mice
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X 染色体剂量补偿异常是小鼠早期发育失败的可能原因

DOI:
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发表时间:
1991
期刊:
Development, Growth and Differentiation
影响因子:
--
通讯作者:
N. Takagi
N. Takagi
中科院分区:
--
文献类型:
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作者:
N. Takagi

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额外的母源X染色体(XM)而不是父系来源的X染色体(XP)在小鼠早期胚胎发育中是有害的,导致不能形成外胎盘锥体和胚胎外外胚层。细胞遗传学研究表明,两条XM染色体在滋养外胚层和原始内胚层中保持活跃,其中XP在正常女性胚泡中优先失活。由于母体印记,活性X染色体的两个副本似乎阻止了滋养外胚层的进一步分化。
An extra maternally derived X chromosome (XM) but not a paternally derived one (XP) is detrimental in early mouse embryogenesis resulting in failure to form the ectoplacental cone and extra‐embryonic ectoderm. Cytogenetic studies suggested that two XMchromosomes remain active in the trophectoderm and possibly also the primitive endoderm, in which XPis preferentially inactivated in normal female embyos. Two copies of an active X chromosome due to maternal imprinting seem to prevent further differentiation of the trophectoderm.
小鼠中的 16 号四体:比相应的三体性更严重的病症。
DOI: --
发表时间: 1986
期刊: Journal of embryology and experimental morphology
影响因子: --
作者:
Debrot,S;Epstein,CJ
通讯作者: Epstein,CJ
XO 小鼠胎儿的存活:X 染色体亲代起源或子宫环境的影响?
DOI: 10.1242/dev.111.4.1137
发表时间: 1991
期刊: Development (Cambridge, England)
影响因子: --
作者:
Hunt,PA
通讯作者: Hunt,PA