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Related Experiment Videos

Cutaneous chemical carcinogenesis.

S H Yuspa

    Journal of the American Academy of Dermatology
    |November 1, 1986
    PubMed
    Summary

    Chemically induced skin cancer develops in stages: initiation (DNA damage), promotion (benign tumor growth), and malignant conversion (additional mutations). Understanding these steps aids skin cancer prevention.

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    Area of Science:

    • Dermatology
    • Oncology
    • Toxicology

    Background:

    • Chemicals are known carcinogens, inducing various skin cancers in humans and animals.
    • The pathogenesis of chemically induced skin cancers involves a multi-step process.
    • Understanding these mechanisms is crucial for effective skin cancer prevention strategies.

    Purpose of the Study:

    • To review current concepts on the pathogenesis of chemically induced skin cancer.
    • To inform clinicians about the stages and mechanisms involved in skin carcinogenesis.
    • To highlight potential anticarcinogenic agents and their clinical applications.

    Main Methods:

    • Review of existing literature on chemical carcinogenesis in skin.
    • Analysis of the distinct stages: initiation, promotion, and malignant conversion.
    • Identification of key genes and molecular pathways involved, such as the Harvey ras gene.

    Main Results:

    • Carcinoma development is a multistage process involving genetic changes (initiation), environmental factors (promotion), and further mutations (malignant conversion).
    • Specific agents like polycyclic aromatic hydrocarbons initiate, while phorbol esters promote tumor growth.
    • Anticarcinogens such as corticosteroids and retinoids show antipromoting effects.

    Conclusions:

    • Chemically induced skin cancer is a complex, multi-step process.
    • Awareness of these mechanisms enhances the potential for skin cancer prevention.
    • Further research into melanoma pathogenesis and anticarcinogenic agents is warranted.

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