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Abstract:
Papillomaviruses are infectious agents which cause benign tumours, or warts, of cutaneous, uterine cervical and laryngeal epithelia. These infections are very common, yet no uniformly effective therapy exists. Current treatments do not selectively inhibit viral processes but destroy the infected epithelial cells. Since interferons have antiviral effects in vivo and in vitro, it was hypothesized that they might be useful for treating papillomavirus-induced conditions. Interferons have now been demonstrated to be effective in several forms of papillomavirus infection. In vitro, chronic treatment of bovine papillomavirus-transformed cells led to the loss of the papillomavirus genomes and return of the cells to a normal morphology. In humans, interferons have been used for treating laryngeal papillomatosis, cutaneous and anogenital warts and epidermodysplasia verruciformis. Partial and total remissions have been achieved with both intralesional and systemic administration. Ongoing studies aim to identify which conditions are most responsive, the optimal dosage and regimen and the most effective class of interferon. The mechanisms by which these responses occur are unknown, but are thought to depend on interferon inducing specific cellular proteins.
Insights
Interferons show promise in treating human papillomavirus (HPV) infections, effectively clearing warts and improving cell health. Further research is ongoing to optimize interferon therapy for various HPV conditions.
Area of Science:
- Virology
- Immunology
- Dermatology
Background:
- Human papillomaviruses (HPVs) cause common epithelial tumors like warts, with limited effective treatments.
- Current therapies destroy infected cells rather than targeting viral processes.
Purpose of the Study:
- To evaluate the efficacy of interferons as a targeted therapy for papillomavirus infections.
- To explore the potential of interferons in treating various HPV-induced conditions.
Main Methods:
- In vitro studies using bovine papillomavirus-transformed cells.
- Clinical application of interferons in treating human HPV infections (laryngeal, cutaneous, anogenital).
- Both intralesional and systemic administration routes were employed.
Main Results:
- In vitro, chronic interferon treatment led to the loss of papillomavirus genomes and cell normalization.
- Successful treatment of laryngeal papillomatosis, cutaneous and anogenital warts, and epidermodysplasia verruciformis.
- Achieved partial and total remissions in human patients.
Conclusions:
- Interferons demonstrate significant therapeutic potential for papillomavirus infections.
- Ongoing research focuses on optimal interferon types, dosages, and treatment regimens.
- The precise mechanisms of interferon action are under investigation, possibly involving induced cellular proteins.