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| Titel: |
Preliminary characterization of a monoclonal antibody (AS-2) against cell cycle related proteins |
| Auteur: |
Stefano Nigro Anna Rapallo Angela Di Vinci Elio Geido Roberto Orecchia Walter Giaretti |
| Verschenen in: |
Analytical cellular pathology |
| Paginering: | Jaargang 17 (2001) nr. 2 pagina's 93-101 |
| Jaar: |
2001-04-01 |
| Inhoud: |
A monoclonal antibody (AS-2) raised by using isolated nuclei from a human erythroleukemia cell line as immunogen is described. AS-2 was of IgM type and recognized proteins present in both isolated cytoplasms and nuclei. The molecular weight of the AS-2 recognized proteins in the cytoplasm was 200 kDa and 70 and 60 kDa in the nucleus. The relative amount of these proteins were measured simultaneously with DNA content by flow cytometry. We found the highest protein content (or stainability) for both cells and nuclei in late-G1, S and G2, at approximately the same level, and the lowest content in M and early-G1. Sorting based on DNA content and AS-2 associated fluorescence helped identifying the staining pattern of cells and nuclei. Interphase isolated nuclei and cell cytoplasms were characterized by interdispersed staining over the entire surfaces while mitoses showed two dots only. The present preliminary data indicate that the proteins recognized by the AS-2 monoclonal are cell cycle related and suggest that in mitoses they are associated with the centrosomes. |
| Uitgever: |
IOS Press |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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