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  • Title: Angiogenesis and cancer metastasis.
    Author: Fidler IJ.
    Journal: Cancer J; 2000 Apr; 6 Suppl 2():S134-41. PubMed ID: 10803828.
    Abstract:
    The growth and spread of neoplasms depends on the establishment of an adequate blood supply, that is, angiogenesis. The onset of angiogenesis involves a change in the local equilibrium between proangiogenic and antiangiogenic regulators that are produced by tumor cells, surrounding stromal cells, and infiltrating leukocytes. In most normal tissues, factors that inhibit angiogenesis predominate, whereas in rapidly dividing tissues, the balance of angiogenic molecules favors stimulation of the process. A potent inhibitor of angiogenesis is interferon-alpha or -beta, shown to down-regulate transcription and protein production of basic fibroblast growth factor, collagenase type IV, and interleukin-8. The daily systemic administration of low (but not high) dose of interferon-alpha can produce significant inhibition of angiogenesis and, hence, regression of human tumors implanted orthotopically in nude mice. The recent elucidation of the interaction among proangiogenic molecules during physiological processes and the apparent disruption of this balance in neoplasia should allow the design of potent antiangiogenic therapies against primary cancers and metastases.
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