Red/green Dual Fluorescence Detection of Both the Nucleus and Nucleolus in Living Cells
| Autor: | Praveen Pande, Jack Coleman, Dee Shen, Wayne F. Patton, Divina Gatica, Zaiguo Li, Hilary Cox |
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| Rok vydání: | 2009 |
| Předmět: | |
| Zdroj: | Microscopy Today. 17:18-21 |
| ISSN: | 2150-3583 1551-9295 |
| DOI: | 10.1017/s1551929509000066 |
| Popis: | The nucleolus represents a highly dynamic nuclear domain arising from an equilibrium between the level of ribosomal RNA synthesis and the efficiency of ribosomal RNA processing [1, 2]. Although the nucleolus is primarily associated with ribosome biogenesis, several lines of evidence now demonstrate that it has additional functions, such as regulation of mitosis, cell-cycle progression and proliferation, many forms of stress response, and biogenesis of multiple ribonucleoprotein particles. Ribosome biogenesis is regulated throughout interphase and ceases during mitosis (Figure 1). Thus, there is a direct relationship between cell growth and nucleolar activities. Nucleoli are well known to be dramatically modified in cancer cells. Additionally, a large number of key proteins from both DNA- and RNA-containing viruses are localized in the nucleolus, including the human immunodeficiency virus (HIV)-1 Rev and Tat proteins. Targeting of viral proteins to the nucleolus not only facilitates virus replication, but may also be required for pathogenic processes. The nucleolus can also be considered a sensor of stress due to the redistribution of the ribosomal proteins in the nucleoplasm through its disruption. |
| Databáze: | OpenAIRE |
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