Simultaneous expression of early and late histone messenger RNAs in individual cells during development of the sea urchin embryo.

Simultaneous expression of early and late histone messenger RNAs in individual cells during development of the sea urchin embryo.
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海胆胚胎发育过程中单个细胞中早期和晚期组蛋白信使 RNA 的同时表达。

DOI:
10.1016/0012-1606(85)90129-0
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发表时间:
1985
影响因子:
2.7
通讯作者:
Angerer,R
Angerer,R
中科院分区:
生物学3区
文献类型:
--
作者:
Angerer,L;DeLeon,D;Cox,K;Maxson,R;Kedes,L;Kaumeyer,J;Weinberg,E;Angerer,R

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从早期(E)到晚期(L)的组蛋白基因表达在发育中的海胆(球海胆)胚胎的过渡进行了检查H2 B,H3,和H4 mRNA的类特异性探针的原位杂交。杂交模式表明,从E到L mRNA的转变逐渐发生,同时在所有卵裂球。因此,在过渡期间,L与E mRNA的比例在大多数细胞中是相似的。这表明,在个体细胞中,组蛋白组成没有发生突然的变化,这可能与细胞谱系分化相关的基因表达的改变有关。在过渡的中点附近,逐渐出现含有很少(如果有的话)E或L组蛋白mRNA的细胞簇。这种表达的调节对于所检查的三种晚期基因是协调的,因为大多数个体细胞含有高或低水平的所有三种mRNA。在囊胚阶段,这些未标记的细胞簇似乎随机分布在整个胚胎中。随后,未标记的区域扩大,并发现主要是在反口外胚层,因为这些细胞停止分裂。因此,L E组蛋白mRNA的比例在不同的细胞谱系中没有差异调节,并且单个细胞中总组蛋白mRNA含量的主要差异可能与细胞周期和/或分裂的停止有关。
The transition from early (E) to late (L) histone gene expression in developing sea urchin (Strongylocentrotus purpuratus) embryos was examined for H2B, H3, and H4 mRNAs by in situ hybridization of class-specific probes. Hybridization patterns indicate that the shift from E to L mRNAs occurs gradually and simultaneously in all blastomeres. Thus, during the transition the ratio of L to E mRNAs is similar in most cells. This suggests that no sudden changes in histone composition occur in individual cells which might be related to alterations in gene expression associated with differentiation of cell lineages. Around the midpoint of the transition, clusters of cells progressively appear which contain little, if any, E or L histone mRNA. This modulation of expression is coordinated for the three late genes examined because most individual cells contain either high or low levels of all three mRNAs. At blastula stage these clusters of unlabeled cells appear to be randomly distributed throughout the embryo. Subsequently the unlabeled regions expand and are found predominantly in aboral ectoderm as these cells cease to divide. Thus, the L E histone mRNA ratio is not differentially regulated in diverse cell lineages, and the major differences in total histone mRNA content among individual cells may be related to cell cycle and/or the cessation of division.
虫草素和细胞解离对海胆胚胎合成 H1 组蛋白的影响。
DOI: 10.1016/0045-6039(80)90030-5
发表时间: 1980
期刊: Cell differentiation
影响因子: --
作者:
J. W. Brookbank
通讯作者: J. W. Brookbank
DOI: 10.1016/0012-1606(82)90360-8
发表时间: 1982
影响因子: 2.7
作者:
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海胆 (S. purpuratus) H2A、H2B 和 H3 组蛋白编码和间隔区的 DNA 序列
DOI: 10.1016/0092-8674(78)90287-8
发表时间: 1978
期刊: Cell
影响因子: 64.5
作者:
I. Sures;Jean C. Lowry;L. Kedes
通讯作者: L. Kedes
海胆 (Lytechinus pictus) 晚期组蛋白 H3 和 H4 基因:聚集但非串联连锁的多基因家族的表征和作图
DOI: 10.1016/0092-8674(82)90132-5
发表时间: 1982
期刊: Cell
影响因子: 64.5
作者:
G. Childs;C. Nocente;T. Lieber;C. Holt;J. Knowles
通讯作者: J. Knowles
DOI: 10.1016/0092-8674(78)90111-3
发表时间: 1978
期刊: Cell
影响因子: 64.5
作者:
G. Overton;E. Weinberg
通讯作者: E. Weinberg