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Updated: Jul 25, 2025

DNA Vector-based RNA Interference to Study Gene Function in Cancer
Published on: June 4, 2012
The Role of DNA Viruses in Human Cancer
Zohreh-Al-Sadat Ghoreshi1, Hamid Reza Molaei2, Nasir Arefinia1
1Student Research Committee, Jiroft University of Medical Sciences, Jiroft, Iran.
Abstract:
This review discusses the possible involvement of infections-associated cancers in humans, with virus infections contributing 15% to 20% of total cancer cases in humans. DNA virus encoded proteins interact with host cellular signaling pathways and control proliferation, cell death and genomic integrity viral oncoproteins are known to bind cellular Deubiquitinates (DUBs) such as cyclindromatosis tumor suppressor, ubiquitin-specific proteases 7, 11, 15 and 20, and A-20 to improve their intracellular stability and cellular signaling pathways and finally transformation. Human papillomaviruses (cervical carcinoma, oral cancer and laryngeal cancer); human polyomaviruses (mesotheliomas, brain tumors); Epstein-Barr virus (B-cell lymphoproliferative diseases and nasopharyngeal carcinoma); Kaposi's Sarcoma Herpesvirus (Kaposi's Sarcoma and primary effusion lymphomas); hepatitis B (hepatocellular carcinoma (HCC)) cause up to 20% of malignancies around the world.
Insights
Virus infections cause 15-20% of human cancers by manipulating cellular pathways. Viral oncoproteins interact with deubiquitinases (DUBs), impacting cell stability and promoting cancer development, including HPV-linked and Hepatitis B-associated malignancies.
Area of Science:
- Oncology
- Virology
- Molecular Biology
Background:
- Infections are linked to a significant portion of human cancers.
- Viral infections contribute 15-20% of all cancer cases globally.
- DNA viruses encode proteins that interfere with host cellular signaling.
Purpose of the Study:
- To review the role of virus infections in human cancers.
- To explore the mechanisms by which viral oncoproteins contribute to cancer development.
- To highlight specific viruses and their associated malignancies.
Main Methods:
- Literature review of studies on virus-associated cancers.
- Analysis of molecular interactions between viral oncoproteins and host cellular machinery.
- Compilation of data on prevalence and types of virus-linked cancers.
Main Results:
- Viral oncoproteins interact with host Deubiquitinases (DUBs) to enhance stability and signaling.
- This interaction promotes uncontrolled cell proliferation, inhibits cell death, and disrupts genomic integrity.
- Specific examples include Human Papillomaviruses (cervical, oral cancers), Hepatitis B (HCC), and Epstein-Barr virus (lymphomas, nasopharyngeal carcinoma).
Conclusions:
- Virus infections are a major etiological factor in a substantial percentage of human cancers.
- Understanding viral oncoprotein interactions with DUBs is crucial for developing targeted cancer therapies.
- Targeting these viral-host interactions could offer new strategies for cancer prevention and treatment.
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