The development of branched silk gland nuclei

Henderson, S. C., Locke, M. (1991) The development of branched silk gland nuclei. Tissue Cell, 23 (6). pp. 867-80. ISSN 0040-8166 (Print)0040-8166 (Linking)

DOI: 10.1016/0040-8166(91)90036-S


Nuclei in the giant polyploid silk gland cells of Calpodes ethlius grow by endomitosis and can develop hundreds of branches during larval life. The shape of the these nuclei is characteristic for each region of the gland. We have found shape to be correlated with arrangement of the nuclear matrix. Scanning electron microscopy showed nuclear matrices with shapes similar to those of feulgen stained nuclei. Profiles of isolated matrices seen by transmission electron microscopy had filaments aligned parallel to the long axis of nuclear branches. DNA stained by Hoechst had a similar parallel alignment within the branches. Nuclear shape may be maintained by a small number of components, since electrophoretic analysis showed only a few abundant polypeptides in the matrix fraction. Silk gland nuclei have some of the same nuclear matrix antigens found in smaller, more regularly shaped, eukaryote nuclei.

Item Type: Paper
Subjects: bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification
organs, tissues, organelles, cell types and functions > organelles, types and functions > nucleus
CSHL Authors:
Communities: CSHL labs > Spector lab
Depositing User: Matt Covey
Date: 1991
Date Deposited: 13 Jan 2016 17:11
Last Modified: 13 Jan 2016 17:11
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