Target intelligence / Profile preview

Human Papillomavirus Antigen (HPV Antigen)

Target: HPV Antigen
Molecular classification: Viral protein, Capsid protein, Oncoprotein

Overview

Human papillomavirus (HPV) antigens are viral proteins expressed by HPV, a family of viruses infecting epithelial tissues. Key antigens include the L1 and L2 capsid proteins, crucial for vaccine development, and the E6 and E7 oncoproteins, involved in cellular transformation and cancer progression. Prophylactic vaccines utilize L1 virus-like particles (VLPs) to induce neutralizing antibodies, preventing infection. Therapeutic vaccines aim to target E6/E7 proteins to treat existing infections or cancers.

Other names: HPV proteinsL1 capsid proteinL2 capsid proteinE6 oncoproteinE7 oncoproteinHPV Virus-Like Particles (VLPs)

Mechanism of action

Stimulation of neutralizing antibody production against HPV capsid proteins (L1) to prevent viral infection. Therapeutic vaccines target E6/E7 proteins.

Biological functions

Viral replicationViral assemblyImmune response elicitationCellular transformationImmune evasion

Disease associations

Cervical cancerGenital wartsAnogenital cancersOropharyngeal cancer

Safety considerations

Rare adverse events associated with HPV vaccines (e.g., injection site reactions)Potential for antigenic variation to affect vaccine efficacyEfficacy against all HPV types not covered by current vaccines

Interacting drugs

HPV vaccines (Gardasil, Cervarix, Gardasil 9)

Biomarkers

HPV DNA detectionp16INK4a expression (surrogate marker for high-risk HPV infection)Antibody titers against HPV antigens

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