有丝分裂周期中成对池的发生。

The American Journal of Pathology Pub Date : 1982-05-01
S Sato, G F Murphy, T J Harrist
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引用次数: 0

摘要

成对池,在有丝分裂活跃的细胞中很明显,是两个或多个扁平的,膜结合的囊泡平行排列堆叠。研究了眼睑低分化癌细胞周期中成对池腺的起源、发展和命运。在有丝分裂周期早期,核-胞质界面形成多个膜结合的卵形囊泡,由相互连接的间隔隔开,同时核膜消失。这些囊泡逐渐变平并拉长,形成成对的池,并在前期晚期迁移到细胞周围。在早期后期,观察到成对的池池与凝聚的染色体密切相关。在后期和末期,池池的扩张导致与前期细胞相似的囊泡。这些膨胀的囊泡在子细胞聚集的染色质周围明显地结合在一起,导致新形成的核包膜。成对池似乎是核膜衍生的特化结构,是子细胞核膜生成的基础。一种罕见的观察到的成对池的变体,地下面对池,简要描述。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The genesis of paired cisternae during the mitotic cycle.

Paired cisternae, which are conspicuous in mitotically active cells, are two or more flattened, membrane-bound saccules stacked in parallel arrays. The origin, development, and fate of paired cisternae during the cell cycle were studied in a poorly differentiated carcinoma of the eyelid. Early in the mitotic cycle, multiple membrane-bound, ovoid vesicles separated by interconnecting septa formed at the nuclear-cytoplasmic interface coincident with the disappearance of the nuclear envelope. These vesicles became progressively flattened and elongated to form paired cisternae, and by late prophase, had migrated to the cell periphery. During early anaphase, intimate association of paired cisternae with condensing chromosomes was observed. During late anaphase and telophase, distension of the cisternae resulted in vesicles similar to those observed in prophase cells. An apparent coalescence of these distended vesicles around the aggregated chromatin of daughter cells resulted in newly formed nuclear envelopes. Paired cisternae appear to be specialized nuclear membrane-derived structures that are fundamental in the generation of nuclear membranes of daughter cells. An infrequently observed variant of paired cisternae, subsurface confronting cisternae, is briefly described.

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