Cell surface molecules involved in infection mediated by lymphocytic choriomeningitis virus glycoprotein

Area of Science:

• Virology
• Gene Therapy
• Cell Biology

Background:

• The glycoprotein (GP) of lymphocytic choriomeningitis virus (LCMV) is a key component for lentiviral pseudotype vectors in gene therapy.
• Dystroglycan, a known LCMV receptor, does not fully explain the limited tropism of LCMV-GP pseudotypes.

Purpose of the Study:

• To investigate if Axl, Tyro3, DC-SIGN, and LSECtin influence LCMV-GP-pseudotype infection.
• To elucidate the tropism of LCMV-GP pseudotypes by examining novel cellular receptors.

Main Methods:

• Assessing the impact of Axl, Tyro3, DC-SIGN, and LSECtin expression on LCMV-GP-pseudotype infection.
• Utilizing cell culture models to evaluate viral entry and tropism.

Main Results:

• All four tested cell surface molecules (Axl, Tyro3, DC-SIGN, LSECtin) significantly enhanced LCMV-GP-pseudotype infection.
• These receptors, previously identified for Lassa virus, play a role in LCMV tropism.

Conclusions:

• The findings expand the understanding of LCMV-GP pseudotype tropism beyond dystroglycan.
• This research provides insights into LCMV infection mechanisms and potential gene therapy applications.