Virus-augmented delayed hypersensitivity skin tests in gynecological malignancies.

Area of Science:

• Immunology
• Oncology
• Virology

Background:

• Tumor cells from various origins were cultured and infected with PR8/A/34 influenza virus.
• Nonviable crude membrane extracts were prepared from both infected and uninfected cells.

Purpose of the Study:

• To investigate the ability of virus-modified tumor extracts to elicit delayed hypersensitivity skin reactions (DHSR).
• To assess antigen sensitivity in patients with squamous uterine cervical carcinoma, epithelial ovarian carcinoma, and malignant melanoma.

Main Methods:

• Crude membrane extracts from virus-infected and uninfected human tumor cells were tested.
• Delayed hypersensitivity skin reactions (DHSR) were measured in allogeneic cancer patients.
• Responses to virus-modified extracts were compared with responses to virus alone or unmodified extracts.

Main Results:

• All patient groups exhibited augmented antigen sensitivity to virus-modified extracts compared to controls.
• Some responses suggested tumor or organ site associations, though specificity was limited.
• Virus-modified melanoma extract elicited a significantly augmented response in melanoma patients compared to ovarian carcinoma patients.

Conclusions:

• Augmented reactions are likely due to the association of influenza virus with cellular components, not the virus alone.
• The findings suggest the potential involvement of tumor-associated determinants in these immune responses.
• Further investigation is needed to understand the clinical significance of this phenomenon.