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Induction and Diagnosis of Tumors in Drosophila Imaginal Disc Epithelia
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TAD disruption as oncogenic driver.

Anne-Laure Valton1, Job Dekker1

  • 1Howard Hughes Medical Institute, Program in Systems Biology, Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, 368 Plantation Street, Worcester, MA 01605-0103, USA.

Current Opinion in Genetics & Development
|April 26, 2016
PubMed
Summary
This summary is machine-generated.

Topologically Associating Domains (TADs) are crucial for gene regulation. Disruptions in TADs, often seen in cancer, can lead to oncogenesis by altering gene expression through domain fusions or new domain formations.

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Area of Science:

  • Genomics
  • Epigenetics
  • Cancer Biology

Background:

  • Topologically Associating Domains (TADs) are fundamental genomic structures conserved across evolution.
  • TADs play a critical role in orchestrating long-range gene expression regulation.
  • Disruption of TAD boundaries can lead to aberrant gene expression by exposing genes to unintended regulatory elements.

Purpose of the Study:

  • To elucidate the mechanisms by which TADs form and govern long-range chromatin interactions.
  • To understand how TAD disruption contributes to oncogenesis in cancer cells.
  • To reveal the impact of genomic rearrangements on gene misregulation in cancer.

Main Methods:

  • Analysis of genomic rearrangements in cancer cells.
  • Investigation of TAD boundary mutations and deletions.
  • Comparative genomics to assess TAD conservation and function.

Main Results:

  • TAD disruption is a frequent event in cancer genomes.
  • Two primary mechanisms of TAD disruption identified: local boundary alteration and genomic rearrangements creating new TADs.
  • TAD disruption contributes to oncogenesis by misregulating oncogenes and tumor suppressors.

Conclusions:

  • Understanding TAD formation and function is key to comprehending gene regulation.
  • TAD disruption mechanisms provide insights into cancer development.
  • Targeting TAD integrity could offer novel therapeutic strategies for cancer.