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Summary

Human endogenous retroviruses (HERVs) and Long interspersed nuclear elements (LINEs) are ancient genomic elements implicated in cancer and immune diseases. Their aberrant expression impacts cellular physiology, influencing gene expression and immunity.

Keywords:
HERVsLINEscancerenhancerinnate immunityinterferon signalingpromoter

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Area of Science:

  • Genomics
  • Molecular Biology
  • Immunology

Background:

  • Human endogenous retroviruses (HERVs) and Long interspersed nuclear elements (LINEs) are genomic remnants of ancient retroviral activity.
  • While typically silenced, their aberrant expression is linked to cancer and immunological diseases.
  • Non-retroviral endogenous viral elements (nrEVEs) represent a novel class of virus-like elements potentially involved in host immunity.

Purpose of the Study:

  • To review the current understanding of how HERVs, LINEs, and nrEVEs impact cellular physiology.
  • To explore their roles in cancer development and innate immunity.
  • To provide perspectives for future research in these areas.

Main Methods:

  • Literature review and synthesis of existing research on HERVs, LINEs, and nrEVEs.
  • Analysis of their mechanisms of action in gene regulation and disease pathology.
  • Discussion of their potential as biomarkers or therapeutic targets.

Main Results:

  • HERVs and LINEs can act as promoter/enhancer elements, controlling gene expression in a context-dependent manner.
  • Derived RNAs and proteins can exhibit oncogenic potential or stimulate innate immunity.
  • nrEVEs are emerging as significant players in host immune responses.

Conclusions:

  • Aberrant expression of HERVs and LINEs is integrated into pathways relevant to cancer and immunological diseases.
  • These endogenous elements significantly impact cellular physiology, influencing both disease development and immune responses.
  • Further investigation into HERVs, LINEs, and nrEVEs is crucial for understanding and potentially treating associated diseases.