[Virus-induced antigens in human tumors]

Area of Science:

• Oncology
• Virology
• Immunology

Background:

• Human malignant tumors were examined for retrovirus D-induced antigen.
• Blood sera from cancer patients were screened for antibodies to this antigen.

Purpose of the Study:

• To investigate the presence of retrovirus D-induced antigen and corresponding antibodies in human cancer patients.
• To explore potential correlations between antigen levels in tumors and antibody titers in sera.

Main Methods:

• Solid-phase radioimmunoassay (SPRIA) was employed for antigen and antibody detection.
• Tumor specimens and blood sera from cancer patients were analyzed.
• Normal tissues and leukemic cells were used as controls.

Main Results:

• Tumor specimens showed varied reactivity to anti-HEp-2 serum.
• Background binding to normal tissues and leukemic cells was low.
• The majority of cancer patient sera tested positive for antibodies to the HEp-2 antigen.
• No correlation was found between high tumor antigen levels and high antibody titers in the same patients.

Conclusions:

• Antibodies to the HEp-2 antigen are prevalent in the sera of cancer patients.
• The presence of the antigen in tumors does not directly correlate with the antibody levels in patient sera.
• Further research is needed to understand the role of this antigen-antibody system in human malignancy.