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[Tumors in insects].

G Matz

    Comptes Rendus Des Seances De La Societe De Biologie Et De Ses Filiales
    |January 1, 1975
    PubMed
    Summary

    Insect tumors arise from hemocyte aggregation or abnormal epithelial cell proliferation. These growths in Locusta migratoria and Leucophaea are transmissible via hemolymph, tumor extracts, or ribonucleic acid.

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    Area of Science:

    • Insect pathology
    • Cell biology
    • Tumorigenesis

    Background:

    • Spontaneous insect tumors involve hemocyte aggregation.
    • Tumors in Locusta migratoria and Leucophaea originate from midgut epithelial cells after gastric nerve severance.

    Purpose of the Study:

    • Investigate the origin and transmission of insect tumors.
    • Characterize the cellular basis of experimentally induced tumors in insects.

    Main Methods:

    • Induction of tumors by severing gastric nerves in Locusta migratoria and Leucophaea.
    • Transmission experiments using hemolymph, tumor homogenates, cell-free extracts, and RNA.

    Main Results:

    • Tumors in these insects stem from abnormal epithelial cell proliferation in midgut regenerative nidi.
    • Tumorigenesis is linked to ribonucleic acid and is transmissible through various biological materials.

    Conclusions:

    • Insect tumors can originate from epithelial cell abnormalities.
    • The transmissible nature of these tumors suggests infectious or genetic factors, potentially involving RNA.