Ephrin receptor A2 is an epithelial cell receptor for Epstein–Barr virus entry
pmid: 29292383
Ephrin receptor A2 is an epithelial cell receptor for Epstein–Barr virus entry
Epstein-Barr virus (EBV) is causally associated with nasopharyngeal carcinoma, 10% of gastric carcinoma and various B cell lymphomas 1 . EBV infects both B cells and epithelial cells 2 . Recently, we reported that epidermal growth factor and Neuropilin 1 markedly enhanced EBV entry into nasopharyngeal epithelial cells 3 . However, knowledge of how EBV infects epithelial cells remains incomplete. To understand the mechanisms through which EBV infects epithelial cells, we integrated microarray and RNA interference screen analyses and found that Ephrin receptor A2 (EphA2) is important for EBV entry into the epithelial cells. EphA2 short interfering RNA knockdown or CRISPR-Cas9 knockout markedly reduced EBV epithelial cell infection, which was mostly restored by EphA2 complementary DNA rescue. EphA2 overexpression increased epithelial cell EBV infection. Soluble EphA2 protein, antibodies against EphA2, soluble EphA2 ligand EphrinA1, or the EphA2 inhibitor 2,5-dimethylpyrrolyl benzoic acid efficiently blocked EBV epithelial cell infection. Mechanistically, EphA2 interacted with EBV entry proteins gH/gL and gB to facilitate EBV internalization and fusion. The EphA2 Ephrin-binding domain and fibronectin type III repeats domain were essential for EphA2-mediated EBV infection, while the intracellular domain was dispensable. This is distinct from Kaposi's sarcoma-associated herpesvirus infection through EphA2 4 . Taken together, our results identify EphA2 as a critical player for EBV epithelial cell entry.
- Harvard University United States
- Cornell University United States
- Methodist Hospital United States
- Third Affiliated Hospital of Sun Yat-sen University China (People's Republic of)
- Brigham and Women's Faulkner Hospital United States
Herpesvirus 4, Human, Membrane Glycoproteins, Receptor, EphA2, Ephrin-A2, Epithelial Cells, CHO Cells, Virus Internalization, Benzoates, Viral Proteins, Cricetulus, HEK293 Cells, Gene Knockdown Techniques, Animals, Humans, RNA Interference, CRISPR-Cas Systems, Molecular Chaperones
Herpesvirus 4, Human, Membrane Glycoproteins, Receptor, EphA2, Ephrin-A2, Epithelial Cells, CHO Cells, Virus Internalization, Benzoates, Viral Proteins, Cricetulus, HEK293 Cells, Gene Knockdown Techniques, Animals, Humans, RNA Interference, CRISPR-Cas Systems, Molecular Chaperones
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