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Published on: June 12, 2021

Tumor immunity. An overview

B V Siegel

    The American Journal of Pathology
    |November 1, 1978
    PubMed

    Insights

    Tumor growth often evades immune responses due to combined immunologic and non-immunologic factors. Understanding macrophage activation and interferon

    Area of Science:

    • Immunology
    • Oncology
    • Cell Biology

    Background:

    • Host immune responses frequently fail to control tumor growth and spread.
    • The in vivo relevance of in vitro immunologic mechanisms for tumor cell destruction remains unclear.
    • Macrophages are crucial for host defense against tumors, and interferon may enhance their tumor-icidal activity.

    Purpose of the Study:

    • To explore the multifactorial nature of oncogenesis.
    • To investigate the role of macrophages and interferon in anti-tumor immunity.
    • To understand age-related susceptibility to carcinogens in tumor development.

    Main Methods:

    • Review of in vitro and in vivo studies on tumor immunology.
    • Examination of macrophage function in anti-tumor responses.
    • Analysis of age-related susceptibility in mice exposed to carcinogens (3-methylcholanthrene, x-irradiation, murine leukemia virus).

    Main Results:

    • Tumorigenesis involves a complex interplay of immunologic and non-immunologic factors.
    • Macrophages are key immune cells in tumor surveillance.
    • Interferon can activate macrophages, potentially leading to tumor cell destruction.
    • Age and carcinogen exposure influence susceptibility to oncogenesis.

    Conclusions:

    • Advances in tumor immunology offer potential strategies to prevent tumor escape from immune destruction.
    • Further research into neoplastic mechanisms is crucial for developing effective cancer therapies.
    • Understanding the interplay of immune and non-immune factors is vital for controlling tumorigenesis.

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