Abstract:
: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.
journal_name
Tissue Celljournal_title
Tissue & cellauthors
Henderson SC,Locke Mdoi
10.1016/0040-8166(91)90036-ssubject
Has Abstractpub_date
1991-01-01 00:00:00pages
867-80issue
6eissn
0040-8166issn
1532-3072pii
0040-8166(91)90036-Sjournal_volume
23pub_type
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