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Extraordinary Cancer Epigenomics: Thinking Outside the Classical Coding and Promoter Box
Matthew Murtha1, Manel Esteller2
1Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), Avinguda Gran Via de L'Hospitalet 199-203, L'Hospitalet del Llobregat, Barcelona, Catalonia, Spain.
Trends in Cancer
|July 26, 2017
Summary
Functional genomics reveals non-coding DNA regions regulating genes. DNA methylation in these regions significantly impacts cancer progression, highlighting their role in disease development.
Area of Science:
- Genomics
- Epigenetics
- Cancer Biology
Background:
- High-throughput sequencing advances functional genomics, revealing the importance of non-coding DNA.
- Genomic regions outside promoters/coding sequences contain regulatory elements like enhancers and noncoding RNAs (ncRNAs).
- The 3D genome structure plays a crucial role in epigenetic regulation.
Purpose of the Study:
- To review the impact of epigenetic changes, particularly DNA methylation.
- To understand how these changes affect non-coding DNA sequences.
- To elucidate the role of these modifications in driving cancer progression.
Main Methods:
- Review of functional genomics studies.
- Analysis of high-throughput sequencing data.
- Examination of epigenetic modifications, focusing on DNA methylation.
Main Results:
- Non-coding regions harbor critical regulatory elements (enhancers, super-enhancers, insulators, alternative promoters).
- These regions produce functional noncoding RNAs (miRNAs, long ncRNAs).
- Epigenetic alterations, especially DNA methylation, profoundly influence these sequences.
Conclusions:
- Epigenetic changes in non-coding DNA are key drivers of cancer progression.
- Understanding these mechanisms offers new insights into cancer development.
- Functional genomics and epigenetics are crucial for deciphering complex diseases like cancer.
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