Transmembrane communication in cells chronically infected with measles virus

Area of Science:

• Virology
• Cell Biology

Background:

• The measles virus utilizes surface proteins like hemagglutinin and hemolysin for cellular interaction.
• Understanding the association between viral surface proteins and intracellular components is crucial for deciphering viral assembly and host cell manipulation.

Purpose of the Study:

• To investigate the transmembrane association between measles virus surface proteins and intracellular viral antigens.
• To elucidate the communication pathways between cell surface viral proteins and internal viral components.

Main Methods:

• Utilized rabbit antisera specific for measles virus matrix and nucleocapsid proteins.
• Employed human antiserum against hemagglutinin and hemolysin proteins.
• Studied protein co-capping in chronically infected human Lu 106 cell lines.
• Assessed the effect of cytochalasin B on protein co-capping.

Main Results:

• Co-capping of surface envelope proteins correlated with co-capping of intracellular matrix and nucleocapsid proteins.
• A linkage was demonstrated between viral inclusions and cell membrane-associated viral proteins.
• Cytochalasin B affected nucleocapsid protein co-capping, suggesting a role for actin filaments.

Conclusions:

• Measles virus exhibits transmembrane communication between surface proteins and intracellular viral components.
• Actin filaments may play a role in mediating the communication between measles virus nucleocapsids and the cell membrane.