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
中科院分区:
文献类型:
--
作者:
Angerer,L;DeLeon,D;Cox,K;Maxson,R;Kedes,L;Kaumeyer,J;Weinberg,E;Angerer,R
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.
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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
影响因子:
2.7
作者:
Robert E. Maxson;F. Wilt
通讯作者:
F. Wilt
影响因子:
64.5
作者:
I. Sures;Jean C. Lowry;L. Kedes
通讯作者:
L. Kedes
影响因子:
64.5
作者:
G. Childs;C. Nocente;T. Lieber;C. Holt;J. Knowles
通讯作者:
J. Knowles
影响因子:
64.5
作者:
G. Overton;E. Weinberg
通讯作者:
E. Weinberg