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Related Experiment Videos

Oncomodulin--a widely distributed, tumour-specific, calcium-binding protein

J P MacManus, J F Whitfield, A L Boynton

    Oncodevelopmental Biology and Medicine : the Journal of the International Society for Oncodevelopmental Biology and Medicine
    |January 1, 1982
    PubMed
    Summary

    Oncomodulin, a novel protein, appears in mouse, rat, and human tumors but not normal tissues. This cancer protein stimulates DNA synthesis, suggesting a role in tumor cell proliferation.

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    Area of Science:

    • Biochemistry
    • Oncology
    • Molecular Biology

    Background:

    • Calmodulin and troponin C are calcium-binding proteins.
    • Cancer is characterized by deregulated cell proliferation.

    Purpose of the Study:

    • To investigate the presence and characteristics of oncomodulin in tumors.
    • To explore the potential role of oncomodulin in cancer cell proliferation.

    Main Methods:

    • Radioimmunoassays were used to detect oncomodulin and calmodulin levels.
    • Tryptic peptide mapping was employed to analyze protein structure.
    • Assays for DNA synthesis in isolated liver cells were performed.

    Main Results:

    • Oncomodulin was detected in various mouse, rat, and human tumors.

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  • Oncomodulin was absent in normal adult and fetal tissues.
  • Oncomodulin from rodent tumors was identical and distinct from calmodulin and troponin C.
  • Oncomodulin stimulated DNA synthesis in isolated rat liver cells.

    • Conclusions:

    • Oncomodulin is a tumor-associated protein.
    • Oncomodulin's presence is specific to cancerous tissues.
    • Oncomodulin may play a role in cancer cell proliferation through DNA synthesis stimulation.