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PMID:12086864
| Citation |
Weeraratna, AT, Jiang, Y, Hostetter, G, Rosenblatt, K, Duray, P, Bittner, M and Trent, JM (2002) Wnt5a signaling directly affects cell motility and invasion of metastatic melanoma. Cancer Cell 1:279-88 |
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| Abstract |
Gene expression profiling identified human melanoma cells demonstrating increased cell motility and invasiveness. The gene WNT5A best determined in vitro invasive behavior. Melanoma cells were transfected with vectors constitutively overexpressing Wnt5a. Consistent changes included actin reorganization and increased cell adhesion. No increase in beta-catenin expression or nuclear translocation was observed. There was, however, a dramatic increase in activated PKC. In direct correlation with Wnt5a expression and PKC activation, there was an increase in melanoma cell invasion. Blocking this pathway using antibodies to Frizzled-5, the receptor for Wnt5a, inhibited PKC activity and cellular invasion. Furthermore, Wnt5a expression in human melanoma biopsies directly correlated to increasing tumor grade. These observations support a role for Wnt5a in human melanoma progression. |
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| Keywords |
Actins/metabolism; Blotting, Western; Cell Adhesion; Cell Movement/physiology; Cytoskeletal Proteins/metabolism; Enzyme Inhibitors/pharmacology; Gene Expression; Gene Expression Regulation; Humans; Immunoenzyme Techniques; Melanoma/genetics; Melanoma/metabolism; Melanoma/pathology; Neoplasm Invasiveness; Polymerase Chain Reaction; Precipitin Tests; Protein Kinase C/metabolism; Proto-Oncogene Proteins/physiology; Signal Transduction/physiology; Skin Neoplasms/genetics; Skin Neoplasms/metabolism; Skin Neoplasms/pathology; Trans-Activators; Transcription, Genetic; Transfection; Tumor Cells, Cultured; Wnt Proteins; beta Catenin |
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Significance
Annotations
| Gene product | Qualifier | GO Term | Evidence Code | with/from | Aspect | Extension | Notes | Status |
|---|---|---|---|---|---|---|---|---|
|
involved_in |
GO:1900020: positive regulation of protein kinase C activity |
ECO:0000315: mutant phenotype evidence used in manual assertion |
P |
Seeded From UniProt |
complete | |||
| GO:1900020: positive regulation of protein kinase C activity |
ECO:0000315: |
P |
Fig. 4 A: Wnt5a increases PKC activity. PKC activity was strongly correlated to Wnt5a expression. |
complete | ||||
See also
References
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