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Expression of platelet-derived growth factor (PDGF)-A, PDGF-B and the PDGF-alpha receptor, but not the PDGF-beta receptor, in human malignant melanoma in vivo. 1996

R L Barnhill, and M Xiao, and D Graves, and H N Antoniades
Department of Pathology (Dermatopathology), Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.

There has been considerable interest in the potential role of growth factors in the initiation and development of cutaneous malignant melanoma (CMM). Platelet-derived growth factor (PDGF) has been shown to be secreted by melanoma cell lines and by metastatic melanoma in vivo. PDGF also has been reported to stimulate the development of tumour stroma and new blood vessels. We studied the expression of PDGF and its receptors by both immunohistochemistry (IHC) and in situ hybridization (ISH) in primary and metastatic melanoma and in normal skin specimens. Cryostat sections were incubated with 35S-labelled riboprobes and antibodies for PDGF-AA, PDGF-alpha receptor, PDGF-BB and PDGF-beta receptor. Both primary and metastatic melanoma exhibited significant expression of PDGF-AA, PDGF-BB and PDGF-alpha receptor by both IHC and ISH, compared with only background expression in normal skin. We did not observe expression of PDGF-beta receptor in melanoma. Our results suggest that PDGF may function as an autocrine growth factor, as well as an angiogenesis factor, in CMM tumour development. This expression of the PDGF-alpha receptor rather than the beta receptor may be unique among solid tumours.

UI MeSH Term Description Entries
D007150 Immunohistochemistry Histochemical localization of immunoreactive substances using labeled antibodies as reagents. Immunocytochemistry,Immunogold Techniques,Immunogold-Silver Techniques,Immunohistocytochemistry,Immunolabeling Techniques,Immunogold Technics,Immunogold-Silver Technics,Immunolabeling Technics,Immunogold Silver Technics,Immunogold Silver Techniques,Immunogold Technic,Immunogold Technique,Immunogold-Silver Technic,Immunogold-Silver Technique,Immunolabeling Technic,Immunolabeling Technique,Technic, Immunogold,Technic, Immunogold-Silver,Technic, Immunolabeling,Technics, Immunogold,Technics, Immunogold-Silver,Technics, Immunolabeling,Technique, Immunogold,Technique, Immunogold-Silver,Technique, Immunolabeling,Techniques, Immunogold,Techniques, Immunogold-Silver,Techniques, Immunolabeling
D008545 Melanoma A malignant neoplasm derived from cells that are capable of forming melanin, which may occur in the skin of any part of the body, in the eye, or, rarely, in the mucous membranes of the genitalia, anus, oral cavity, or other sites. It occurs mostly in adults and may originate de novo or from a pigmented nevus or malignant lentigo. Melanomas frequently metastasize widely, and the regional lymph nodes, liver, lungs, and brain are likely to be involved. The incidence of malignant skin melanomas is rising rapidly in all parts of the world. (Stedman, 25th ed; from Rook et al., Textbook of Dermatology, 4th ed, p2445) Malignant Melanoma,Malignant Melanomas,Melanoma, Malignant,Melanomas,Melanomas, Malignant
D010982 Platelet-Derived Growth Factor Mitogenic peptide growth hormone carried in the alpha-granules of platelets. It is released when platelets adhere to traumatized tissues. Connective tissue cells near the traumatized region respond by initiating the process of replication. Platelet Derived Growth Factor,Factor, Platelet-Derived Growth,Growth Factor, Platelet-Derived
D011518 Proto-Oncogene Proteins Products of proto-oncogenes. Normally they do not have oncogenic or transforming properties, but are involved in the regulation or differentiation of cell growth. They often have protein kinase activity. Cellular Proto-Oncogene Proteins,c-onc Proteins,Proto Oncogene Proteins, Cellular,Proto-Oncogene Products, Cellular,Cellular Proto Oncogene Proteins,Cellular Proto-Oncogene Products,Proto Oncogene Products, Cellular,Proto Oncogene Proteins,Proto-Oncogene Proteins, Cellular,c onc Proteins
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012878 Skin Neoplasms Tumors or cancer of the SKIN. Cancer of Skin,Skin Cancer,Cancer of the Skin,Neoplasms, Skin,Cancer, Skin,Cancers, Skin,Neoplasm, Skin,Skin Cancers,Skin Neoplasm
D017403 In Situ Hybridization A technique that localizes specific nucleic acid sequences within intact chromosomes, eukaryotic cells, or bacterial cells through the use of specific nucleic acid-labeled probes. Hybridization in Situ,Hybridization, In Situ,Hybridizations, In Situ,In Situ Hybridizations
D017479 Receptors, Platelet-Derived Growth Factor Specific receptors on cell membranes that react with PLATELET-DERIVED GROWTH FACTOR, its analogs, or antagonists. The alpha PDGF receptor (RECEPTOR, PLATELET-DERIVED GROWTH FACTOR ALPHA) and the beta PDGF receptor (RECEPTOR, PLATELET-DERIVED GROWTH FACTOR BETA) are the two principle types of PDGF receptors. Activation of the protein-tyrosine kinase activity of the receptors occurs by ligand-induced dimerization or heterodimerization of PDGF receptor types. PDGF Receptors,Platelet-Derived Growth Factor Receptors,Receptors, PDGF,PDGF Receptor,Platelet-Derived Growth Factor Receptor,Platelet Derived Growth Factor Receptor,Platelet Derived Growth Factor Receptors,Receptor, PDGF,Receptors, Platelet Derived Growth Factor
D020574 Proto-Oncogene Proteins c-sis Cellular DNA-binding proteins encoded by the sis gene (GENES, SIS). c-sis proteins make up the B chain of PLATELET-DERIVED GROWTH FACTOR. Overexpression of c-sis causes tumorigenesis. PDGFB,Platelet-Derived Growth Factor B,c-sis Proteins,sis Proto-Oncogene Proteins,Proto-Oncogene Products c-sis,Proto-Oncogene Protein sis,Proto-Oncogene Proteins sis,Platelet Derived Growth Factor B,Proto Oncogene Products c sis,Proto Oncogene Protein sis,Proto Oncogene Proteins c sis,Proto Oncogene Proteins sis,Proto-Oncogene Proteins, sis,c sis Proteins,sis Proto Oncogene Proteins,sis, Proto-Oncogene Protein,sis, Proto-Oncogene Proteins
D020796 Receptor, Platelet-Derived Growth Factor alpha A PDGF receptor that binds specifically to both PDGF-A chains and PDGF-B chains. It contains a protein-tyrosine kinase activity that is involved in SIGNAL TRANSDUCTION. Antigens, CD140a,CD140a Antigens,PDGF alpha Receptor,PDGF-R-alpha,Platelet-Derived Growth Factor alpha Receptor,Receptor, PDGF alpha,CD140a Antigen,PDGFR2,PDGFRalpha,Antigen, CD140a,Platelet Derived Growth Factor alpha Receptor

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