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Regulatory non-coding somatic mutations as drivers of neuroblastoma
Annalaura Montella1,2, Matilde Tirelli1,2, Vito Alessandro Lasorsa2
1University of Naples Federico II, Department of Molecular Medicine and Medical Biotechnology, Naples, Italy.
Non-coding single nucleotide variants (SNVs) in regulatory elements disrupt gene expression, driving neuroblastoma. These SNVs impair tumor suppressor genes, offering potential therapeutic targets.
Area of Science:
- Genomics
- Cancer Biology
- Neuroscience
Background:
- Non-coding somatic single nucleotide variants (SNVs) in cis-regulatory elements (CREs) are increasingly implicated in cancer by altering gene expression.
- The specific role of non-coding SNVs in neuroblastoma pathogenesis is not well understood.
Purpose of the Study:
- To investigate the functional impact of non-coding SNVs in CREs on neuroblastoma development.
- To identify the molecular mechanisms by which these SNVs contribute to tumorigenesis.
Main Methods:
- Luciferase assays to assess SNV effects on CRE activity.
- Motif analysis and ChIP-qPCR to identify transcription factor (TF) binding.
- CRISPR-Cas9 to evaluate SNV impact on target gene expression.
- Cell proliferation and invasion assays to assess tumorigenesis.
Main Results:
- Non-coding SNVs alter CRE transcriptional activity by modifying STAT3 and SIN3A binding.
- These SNVs decrease the expression of CTTNBP2 and MCF2L, identified as tumor suppressors in neuroblastoma.
- Pathogenic SNVs act as oncogenic drivers by disrupting neuronal development and differentiation programs.
Conclusions:
- Understanding the functional roles of non-coding variants is crucial for elucidating their impact on cancer.
- These findings highlight potential novel therapeutic targets for neuroblastoma treatment.
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