The insulin-like growth factor system as a target in breast cancer

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Evidence from several experimental systems has shown that the insulin-like growth factors (IGFs) can stimulate breast cancer proliferation. Since IGF action is mediated by interaction with specific cell surface receptors, interruption of these signalling pathways could result in inhibition of cellular growth. In all extracellular fluids, the IGFs are associated with high affinity binding proteins, the IGFBPs. Although the function of each IGFBP is not known, it is clear that under certain circumstances the IGFBPs can bind the IGFs and prevent receptor activation, and thus might have a role in a targeted approach to breast cancer therapy. Here we present our studies using IGFBP-1 to inhibit growth of the breast cancer cell line MCF-7.

Original languageEnglish (US)
Pages (from-to)85-95
Number of pages11
JournalBreast Cancer Research and Treatment
Issue number1
StatePublished - Jan 1 1994


  • IGF binding proteins
  • IGF receptors
  • MCF-7 breast cancer cells
  • autocrine growth factors
  • insulin-like growth factors
  • targeted therapy


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