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Updated: Aug 12, 2026

Microarray-based Identification of Individual HERV Loci Expression: Application to Biomarker Discovery in Prostate Cancer
Published on: November 2, 2013
Human endogenous retrovirus regulates the initiation and progression of cancers (Review)
Srishti Sahu1, Bharat Singh1, Ambak Kumar Rai1
1Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Prayagraj, Uttar Pradesh 211004, India.
Abstract:
The expression of genes is altered in various diseases and is responsible for the disease's initiation, progression and pathology. Several other genes, predominantly inactivated, may become activated in a given condition and contribute to the initiation and progression of the disease. Similarly, human endogenous viruses (HERVs) are an incomplete, non-productive and inactive viral sequence present in the heterochromatin of the human genome, and are often referred to as junk DNA. HERVs were inserted into the host genome millions of years ago. However, they were silenced due to multiple mutations and recombination that occurred over time. However, their expression is increased in cancers due to either epigenetic or transcriptional dysregulation. Some of the HERVs having intact open reading frames have been reported to express virus-like particles, functional peptides and proteins involved in tumorigenesis. To summarize, there is involvement of different HERVs in the initiation and progression of several cancers. The present review aims to provide concise information on HERV and its involvement in the initiation and progression of multiple types of cancer.
Insights
Human endogenous retroviruses (HERVs), once considered junk DNA, are reactivated in cancers. Their expression contributes to cancer initiation and progression, highlighting their role in tumorigenesis.
Area of Science:
- Genomics
- Oncology
- Virology
Background:
- Gene expression alterations drive disease initiation, progression, and pathology.
- Human endogenous retroviruses (HERVs) are ancient viral sequences in the human genome, typically silenced.
- Epigenetic and transcriptional dysregulation can lead to increased HERV expression in cancers.
Purpose of the Study:
- To review the role of HERVs in the initiation and progression of various cancers.
- To provide concise information on HERV involvement in tumorigenesis.
Main Methods:
- Literature review focusing on HERV expression and cancer.
- Analysis of studies reporting HERV involvement in cancer development.
Main Results:
- Certain HERVs are reactivated in cancers due to dysregulation.
- Intact HERVs can express virus-like particles, peptides, and proteins implicated in cancer.
- Multiple HERVs are involved in the initiation and progression of diverse cancer types.
Conclusions:
- HERVs play a significant role in the development of various cancers.
- Understanding HERV activity is crucial for cancer research and potential therapeutic strategies.
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