Species-specific aggregation factor in sponges V. Influence on programmed syntheses
Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis, ISSN: 0005-2787, Vol: 418, Issue: 2, Page: 217-225
1976
- 22Citations
- 12Captures
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Metrics Details
- Citations22
- Citation Indexes22
- 22
- CrossRef21
- Captures12
- Readers12
Article Description
Isolated cells from the siliceous sponge Geodia cydonium as well as small primary aggregates (diameter: 70 μm) consisting of them show no increase in rates of programmed syntheses and mitotic activity with time. After addition of a highly purified aggregation factor to a culture with primary aggregates which subsequently form secondary aggregates (diameter: larger than 1000 μm), a dramatic increase of DNA, RNA and protein synthesis occurs. Together with this increase, the cells show a high mitotic activity. The values for the mitotic coefficient reach a first maximum 8 h after the beginning of the secondary aggregation process. The stimulation of the mitotic activity of cells during the aggregation factor induced secondary aggregation process can be suppressed by inhibitors of RNA and protein synthesis as well as by a blocker of DNA synthesis. This finding may indicate that cells from the G 0 -population enter the proliferating cell pool via the G 1 -phase.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/000527877690071X; http://dx.doi.org/10.1016/0005-2787(76)90071-x; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0017281105&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/55274; https://linkinghub.elsevier.com/retrieve/pii/000527877690071X; http://linkinghub.elsevier.com/retrieve/pii/000527877690071X; http://api.elsevier.com/content/article/PII:000527877690071X?httpAccept=text/xml; http://api.elsevier.com/content/article/PII:000527877690071X?httpAccept=text/plain; http://dx.doi.org/10.1016/0005-2787%2876%2990071-x; https://dx.doi.org/10.1016/0005-2787%2876%2990071-x
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