Antibodies against endogenous retroviruses

Area of Science:

• Genomics
• Immunology
• Virology

Background:

• The human genome contains numerous endogenous retroviruses (ERVs) from ancient infections.
• Host mechanisms like epigenetic repression and mutation limit ERV activity over time.
• Some recently integrated ERVs retain the ability to produce viral components.

Purpose of the Study:

• To review the immunogenicity of endogenous retroviral (ERV) proteins.
• To emphasize the antibody response against ERV antigens.
• To discuss the potential disease implications of ERV immunogenicity.

Main Methods:

• Review of existing literature on ERV expression and immunogenicity.
• Analysis of antibody responses to ERV antigens in various conditions.
• Examination of the role of ERVs in disease pathogenesis.

Main Results:

• ERV expression can occur, particularly in conditions like cancer, due to reversible epigenetic changes.
• The adaptive immune system can recognize ERV antigens as foreign, mounting an antibody response.
• Antibodies against ERV antigens are found in various disorders and sometimes in healthy individuals.

Conclusions:

• ERV antigens, despite being 'self', may elicit immune responses due to their retroviral origins.
• The pathogenic or protective role of anti-ERV antibodies is likely dependent on the specific context.
• Understanding ERV immunogenicity is crucial for evaluating their impact on health and disease.