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There and Back Again: Hox Clusters Use Both DNA Strands.

Elena L Novikova1,2, Milana A Kulakova1,2

  • 1Department of Embryology, St. Petersburg State University, Universitetskaya nab. 7-9, 199034 Saint Petersburg, Russia.

Journal of Developmental Biology
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Summary

Long non-coding RNAs (lncRNAs) transcribed from Hox gene clusters regulate gene expression, epigenetic modifications, and cellular metabolism. These antisense RNAs are crucial for maintaining Hox cluster integrity and function across diverse animal systems.

Keywords:
Hox cluster evolutionHox genesNATsantisense ncRNAsantisense transcriptionlinkRNAslncRNAslong noncoding RNAs

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Area of Science:

  • Developmental Biology
  • Genetics
  • Molecular Biology

Background:

  • Hox gene clusters are essential for animal development.
  • Gene regulation within Hox clusters involves complex mechanisms.
  • Long non-coding RNAs (lncRNAs) are increasingly recognized as key regulatory molecules.

Purpose of the Study:

  • To review and analyze the role of lncRNAs transcribed from Hox gene clusters.
  • To explore the regulatory functions of antisense Hox RNAs.
  • To discuss the implications of these RNAs in various biological systems.

Main Methods:

  • Literature review and data analysis.
  • Comparative analysis of well-studied and non-model organisms.
  • Focus on antisense transcription within Hox clusters.

Main Results:

  • Antisense regulatory RNAs control Hox gene expression in cis and trans.
  • These lncRNAs are involved in establishing and maintaining epigenetic codes at Hox loci.
  • Antisense Hox RNAs can yield regulatory peptides affecting cellular metabolism.
  • They act as a cohesive force for the entire Hox cluster.

Conclusions:

  • Antisense lncRNAs are critical regulators of Hox gene function and organization.
  • These molecules play multifaceted roles in development and cellular processes.
  • Further investigation into antisense Hox RNAs in diverse species is warranted.