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Published on: July 20, 2019
Functional modulation of the metastatic suppressor Nm23-H1 by oncogenic viruses
1Department of Microbiology and Tumor Virology Program, Abramson Comprehensive Cancer Center, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA.
Abstract:
Evidence over the last two decades from a number of disciplines has solidified some fundamental concepts in metastasis, a major contributor to cancer associated deaths. However, significant advances have been made in controlling this critical cellular process by focusing on targeted therapy. A key set of factors associated with this invasive phenotype is the nm23 family of over twenty metastasis-associated genes. Among the eight known isoforms, Nm23-H1 is the most studied potential anti-metastatic factor associated with human cancers. Importantly, a growing body of work has clearly suggested a critical role for Nm23-H1 in limiting tumor cell motility and progression induced by several tumor viruses, including Epstein-Barr virus (EBV), Kaposi's sarcoma associated herpes virus (KSHV) and human papilloma virus (HPV). A more in depth understanding of the interactions between tumor viruses encoded antigens and Nm23-H1 will facilitate the elucidation of underlying mechanism(s) which contribute to virus-associated cancers. Here, we review recent studies to explore the molecular links between human oncogenic viruses and progression of metastasis, in particular the deregulation of Nm23-H1 mediated suppression.
Insights
Nm23-H1 is a key factor in suppressing cancer metastasis, particularly when triggered by oncogenic viruses like EBV, KSHV, and HPV. Understanding these interactions aids in developing targeted therapies for virus-associated cancers.
Area of Science:
- Oncology
- Molecular Biology
- Virology
Background:
- Metastasis is a major cause of cancer mortality.
- The nm23 gene family, particularly Nm23-H1, is implicated in controlling cancer cell invasion.
- Oncogenic viruses are increasingly recognized for their role in cancer progression.
Purpose of the Study:
- To review the molecular mechanisms linking human oncogenic viruses and metastasis.
- To explore the role of Nm23-H1 in virus-induced cancer progression.
- To highlight Nm23-H1 as a potential therapeutic target in virus-associated cancers.
Main Methods:
- Literature review of recent studies on metastasis, nm23-H1, and oncogenic viruses.
- Analysis of molecular interactions between viral antigens and Nm23-H1.
- Examination of Nm23-H1's role in tumor cell motility and progression.
Main Results:
- Nm23-H1 plays a critical role in limiting tumor cell motility and progression.
- Several tumor viruses, including EBV, KSHV, and HPV, can induce metastatic phenotypes.
- Deregulation of Nm23-H1 contributes to virus-associated cancer progression.
Conclusions:
- Nm23-H1 is a significant suppressor of metastasis, especially in virus-associated cancers.
- Further understanding of viral antigen-Nm23-H1 interactions is crucial for elucidating cancer mechanisms.
- Targeting Nm23-H1 pathways may offer novel therapeutic strategies for virus-driven cancers.
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