Related Experiment Video
Updated: Jun 13, 2026
07:54
Rapid Analysis of Chromosome Aberrations in Mouse B Lymphocytes by PNA-FISH
Published on: August 19, 2014
45A ncRNA Expression Leads to Chromosomal Instability and Cytoskeletal Dynamics Impairment by Modulating
Matilde Calderoni1, Silvia Viaggi2,3, Paola Modesto4
1Department of Experimental Medicine, University of Genova, 16132 Genoa, Italy.
International Journal of Molecular Sciences
|June 12, 2026
Summary
45A non-coding RNA (ncRNA) affects neuroblastoma cell behavior by altering cytoskeleton proteins. This ncRNA influences cell migration, proliferation, and tumorigenic potential, impacting prognosis.
Area of Science:
- Molecular Biology
- Cell Biology
- Cancer Research
Background:
- Non-coding RNAs play crucial roles in gene regulation.
- Cytoskeleton dynamics are essential for cell function and are often dysregulated in cancer.
- Neuroblastoma is a pediatric cancer with complex molecular underpinnings.
Purpose of the Study:
- To investigate the role of 45A non-coding RNA (ncRNA) in regulating neuroblastoma cell cytoskeleton and associated proteins.
- To determine how 45A ncRNA affects the expression and localization of key proteins involved in microtubule dynamics and chromosomal stability.
- To elucidate the impact of 45A ncRNA on neuroblastoma cell proliferation, migration, and tumorigenic potential.
Main Methods:
- Real-time RT-PCR for gene expression analysis.
- Western blotting to assess protein levels.
- Immunofluorescence microscopy for protein localization studies.
- Stable overexpression and downregulation of 45A ncRNA in neuroblastoma cell models.
Main Results:
- 45A ncRNA directly regulates the expression of GTSE1, MCAK, Aurora B, and p53.
- Altered 45A ncRNA levels affect tubulin organization and spindle formation, leading to chromosomal instability.
- 45A ncRNA influences GTSE1 subcellular localization and p53 sequestration, impacting apoptosis and cell resistance.
- Overexpression of 45A ncRNA correlates with increased tumorigenic potential in neuroblastoma cells.
Conclusions:
- 45A ncRNA is a significant regulator of proteins involved in microtubule dynamics in neuroblastoma.
- Dysregulation of 45A ncRNA contributes to chromosomal instability and altered cell behavior.
- 45A ncRNA holds potential as a prognostic biomarker in neuroblastoma.
More Related Videos
Related Concept Videos
02:36DNA Damage can Stall the Cell Cycle
In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
02:36DNA Damage Can Stall the Cell Cycle
In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
02:23Abnormal Proliferation
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the daughter...
02:54Nucleosome Remodeling
Nucleosomes are the basic units of chromatin compaction. Each nucleosome consists of the DNA bound tightly around a histone core, which makes the DNA inaccessible to DNA binding proteins such as DNA polymerase and RNA polymerase. Hence, the fundamental problem is to ensure access to DNA when appropriate, despite the compact and protective chromatin structure.
Nucleosome remodeling complex
Eukaryotic cells have specialized enzymes called ATP-dependent nucleosome remodeling enzymes. These enzymes...
Nucleosome remodeling complex
Eukaryotic cells have specialized enzymes called ATP-dependent nucleosome remodeling enzymes. These enzymes...
02:17Separation of Sister Chromatids
At the transition from prophase to metaphase, there is a reduction in cohesion along the chromosomal arms, resulting in the resolution of sister chromatids. However, residual cohesin connections remain to hold the sister chromatids together until the transition from metaphase to anaphase. The residual connection prevents any premature separation of sister chromatids, blocking the risks of aneuploidy within the daughter cells.
At the onset of anaphase, separase, a proteolytic enzyme, is...
At the onset of anaphase, separase, a proteolytic enzyme, is...
01:23Negative Regulator Molecules
Positive regulators allow a cell to advance through cell cycle checkpoints. Negative regulators have an equally important role as they terminate a cell’s progression through the cell cycle—or pause it—until the cell meets specific criteria.