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Product of the Cellular Oncogene, C-Fos, Observed in Mouse and Human Tissues Using an Antibody to a Synthetic Peptide

Product of the Cellular Oncogene, C-Fos, Observed in Mouse and Human Tissues Using an Antibody to a Synthetic Peptide

E D Adamson, J Meek, S A Edwards

EMBO J. 1985 Apr;4(4):941-7.

PMID: 3894012

Abstract:

The transforming gene of the osteosarcoma-producing FBJ murine sarcoma virus, v-fos, is homologous to a normal cellular gene, c-fos, in vertebrate species. Transcripts from the c-fos proto-oncogene accumulate to very high levels in late gestational mouse and human extra-embryonic tissues. We now report that these RNA transcripts are translated in these tissues. Rabbits were immunized with a synthetic peptide whose sequence is common to both c-fos and v-fos. After affinity purification on an immunosorbent containing the fos peptide (a nonapeptide), the antibody reacted with a component(s) in nuclei in sections of human and murine tissues and immunoprecipitated the v-fos gene product (p55) and a cellular protein of 39 kd (p39, complexed with fos) from lysates of metabolically-labelled virally transformed cells. Crude extracts of normal tissues contained major anti-fos-reactive proteins in the range of 55-60 kd as shown by protein blot analysis. Indirect immunofluorescence and immunoperoxidase staining showed that in addition to strong immunoreactive component(s) in the nuclei of extra-embryonic tissues of human and mouse, weaker reactions are detectable in all normal fetal and adult tissues tested. This demonstrates that fos-reactive protein is expressed in a wide variety of cells and tissues.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
IAR4245995	Anti-FOS antibody produced in rabbit			Price

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