Cell surface glycoprotein patterns of two EBV-negative lines and their EBV converted sublines

Area of Science:

• Cell biology
• Virology
• Glycobiology

Background:

• Burkitt lymphoma is a B-cell malignancy.
• Epstein-Barr virus (EBV) is associated with certain subtypes of Burkitt lymphoma.
• Cell surface glycoproteins play roles in cell adhesion and signaling.

Purpose of the Study:

• To investigate the impact of Epstein-Barr virus (EBV) infection on cell surface galactosyl-glycoprotein expression in Burkitt lymphoma cell lines.
• To identify specific changes in glycoprotein profiles associated with EBV conversion.

Main Methods:

• Comparative analysis of cell surface galactosyl-glycoprotein patterns.
• Utilized Ramos and BJAB Burkitt lymphoma cell lines.
• Compared EBV-negative cells with their acutely EBV-superinfected and stably EBV-converted derivatives.

Main Results:

• EBV infection induced the appearance of a 69,000 mol. wt. galactosyl-glycoprotein (GP69) in Ramos cells.
• EBV-infected BJAB cells exhibited both GP69 and a 71,000 mol. wt. galactosyl-glycoprotein (GP71).
• GP71 was also detected in EBV-converted Ramos cells.

Conclusions:

• Epstein-Barr virus (EBV) infection significantly modifies cell surface galactosyl-glycoprotein expression in Burkitt lymphoma.
• Specific glycoproteins (GP69 and GP71) are associated with EBV presence in these cell lines.
• These changes may have implications for understanding EBV-lymphoma interactions.