Volume 13, Issue 1 pp. 15-20
Original Article
Free Access

Localization of epidermal growth factor receptor in hepatocyte nuclei

Ulrich Marti

Ulrich Marti

Cell Biology and Aging Section, Department of Veterans Affairs Medical Center, San Francisco, California 94121; and the Departments of Medicine and Anatomy, the Liver Center and Hooper Foundation, University of California, San Francisco, California 94143

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Dr. Susan Jo Burwen

Corresponding Author

Dr. Susan Jo Burwen

Cell Biology and Aging Section, Department of Veterans Affairs Medical Center, San Francisco, California 94121; and the Departments of Medicine and Anatomy, the Liver Center and Hooper Foundation, University of California, San Francisco, California 94143

Cell Biology Section 151E, Department of Veterans Affairs Medical Center, 4150 Clement Street, San Francisco, CA 94121===Search for more papers by this author
Alan Wells

Alan Wells

Cell Biology and Aging Section, Department of Veterans Affairs Medical Center, San Francisco, California 94121; and the Departments of Medicine and Anatomy, the Liver Center and Hooper Foundation, University of California, San Francisco, California 94143

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Mary E. Barker

Mary E. Barker

Cell Biology and Aging Section, Department of Veterans Affairs Medical Center, San Francisco, California 94121; and the Departments of Medicine and Anatomy, the Liver Center and Hooper Foundation, University of California, San Francisco, California 94143

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Sandra Huling

Sandra Huling

Cell Biology and Aging Section, Department of Veterans Affairs Medical Center, San Francisco, California 94121; and the Departments of Medicine and Anatomy, the Liver Center and Hooper Foundation, University of California, San Francisco, California 94143

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Anna M. Feren

Anna M. Feren

Cell Biology and Aging Section, Department of Veterans Affairs Medical Center, San Francisco, California 94121; and the Departments of Medicine and Anatomy, the Liver Center and Hooper Foundation, University of California, San Francisco, California 94143

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Albert L. Jones

Albert L. Jones

Cell Biology and Aging Section, Department of Veterans Affairs Medical Center, San Francisco, California 94121; and the Departments of Medicine and Anatomy, the Liver Center and Hooper Foundation, University of California, San Francisco, California 94143

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First published: January 1991
Citations: 93

Abstract

Experiments undertaken to investigate the binding of epidermal growth factor by hepatocyte nuclei showed that: (a) isolated nuclei from both normal and regenerating rat liver are capable of binding 125I-epidermal growth factor, (b) the nuclear epidermal growth factor-binding protein is similar in molecular weight to the plasma membrane epidermal growth factor receptor, (c) monoclonal antibodies produced against the plasma membrane epidermal growth factor receptor recognize the nuclear epidermal growth factor receptor and (d) the nuclear receptor has an affinity for epidermal growth factor comparable to that of the plasma membrane receptor, but fewer (∼ 10%) nuclear receptors are available per protein unit compared with the plasma membrane. (HEPATOLOGY 1991;13:15–20).

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