SourceInvestigative Ophthalmology and Visual Science, 48, 11, (2007), pp. 4882-9
Article / Letter to editor
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Investigative Ophthalmology and Visual Science
SubjectIGMD 3: Genomic disorders and inherited multi-system disorders; NCEBP 2: Evaluation of complex medical interventions; UMCN 3.3: Neurosensory disorders
PURPOSE: Bone morphogenetic protein-7 (BMP7), a member of the TGF-beta superfamily, is essential for early ocular morphogenesis, and lack of BMP7 causes epithelial development disturbances in the eye. In the present study, the association of tumorigenicity and malignant behavior of human uveal melanoma with BMP7 expression and the possibility that overexpression of BMP7 in uveal melanoma affects intraocular tumor growth in vivo were investigated. METHODS: To establish the role of BMP7 in uveal melanoma progression, the human OCM-1 cell line was stably transfected to overexpress BMP7 (OCM-1 FRT/BMP7) using targeted homologous recombination. RESULTS: Transcriptional profiling revealed low or no detectable expression of BMP7 in primary tumor tissue of patients with uveal melanoma. In line with these clinical observations, BMP7 mRNA levels were low or not detectable in cultured human uveal melanoma cell lines, when compared with normal cultured melanocytes. Inoculation of OCM-1 FRT/BMP7 cells into the anterior chamber of the eye of nude mice inhibited tumor progression significantly, compared with progression in the control cell line (no BMP7 expression). CONCLUSIONS: Collectively, the data provide novel evidence that decreased BMP7 expression contributes to progression of uveal melanoma. Furthermore, BMP7 may represent a novel therapeutic molecule for repression of tumor growth in uveal melanoma.
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