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. 1993 Nov;119(11):665–668. doi: 10.1007/BF01215985

Expression of insulin-like growth factor receptors I and II in normal human lung and in lung cancer

U Kaiser 1,✉, C Schardt 1, D Brandscheidt 2, E Wollmer 1, K Havemann 1
PMCID: PMC12200525  PMID: 8394366

Abstract

Insulin-like growth factors are potent mitogenic factors in human lung cancer in vitro, acting via specific receptors. Using monoclonal antibodies we demonstrate the expression of insulin-like growth factor receptor I in bronchial epithelial cells of normal lung and in primary lung cancer (22/24 cases), being most prominent in squamous cell carcinoma. Electron microscopy on lung cancer cell lines reveals a distinct reaction pattern on the plasma membrane. Immunoreaction with a specific antibody directed against the insulin-like growth factor receptor II suggests a weak expression in primary lung cancer. Our findings underline the significance of the autocrine pathway of insulin-like growth factors in lung cancer.

Key words: Lung cancer, Insulin-like growth factor receptors, Immunohistology

Abbreviations

IGF

insulin-like growth factor

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