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Updated: Oct 22, 2025
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Establishment of Epstein-Barr Virus Growth-transformed Lymphoblastoid Cell Lines
Published on: November 8, 2011
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The EBV-Encoded Oncoprotein, LMP1, Recruits and Transforms Fibroblasts via an ERK-MAPK-Dependent Mechanism
Alexandra M Davis1, Abigail Rapley1, Christopher W Dawson2
1Faculty of Health and Life Sciences, De Montfort University, Leicester LE1 9BH, UK.
Pathogens (Basel, Switzerland)
|August 28, 2021
Summary
Latent membrane protein 1 (LMP1) from Epstein-Barr virus (EBV) recruits cancer-associated fibroblasts (CAFs) in nasopharyngeal carcinoma (NPC). This recruitment, via an ERK-MAPK pathway, enhances tumor cell viability and invasiveness, potentially driving metastatic disease.
Area of Science:
- Oncology
- Virology
- Cell Biology
Background:
- Latent membrane protein 1 (LMP1) is a major Epstein-Barr virus (EBV) oncoprotein implicated in nasopharyngeal carcinoma (NPC) pathogenesis.
- Variable LMP1 expression in NPC and the prognostic significance of cancer-associated fibroblasts (CAFs) are known, but a direct link is missing.
Purpose of the Study:
- To investigate the role of LMP1 in recruiting CAFs within the NPC tumor microenvironment.
- To elucidate the mechanism by which LMP1 influences fibroblast behavior.
Main Methods:
- In vitro assays were used to assess fibroblast recruitment by LMP1.
- The involvement of the ERK-MAPK signaling pathway was investigated.
- Fibroblast viability, invasiveness, and phenotypic transformation were analyzed.
Main Results:
- LMP1 demonstrated the ability to recruit fibroblasts in vitro.
- This recruitment was dependent on the ERK-MAPK signaling pathway.
- LMP1 induced enhanced fibroblast viability, invasiveness, and transformation into a myofibroblast-like phenotype.
Conclusions:
- LMP1 plays a role in recruiting CAFs to the NPC tumor microenvironment.
- The ERK-MAPK pathway is crucial for LMP1-mediated fibroblast recruitment.
- These findings suggest LMP1 contributes to NPC progression and metastasis by manipulating the tumor microenvironment.
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