Enhanced casein kinase II activity in metastatic melanoma.
The benign dermal nevus can be transformed into malignant melanoma. The possibility that the transformation process is accompanied with enhanced casein kinase II ( CK II) activity was investigated. The tissue samples were obtained by incisional biopsy, homogenized and ultracentrifuged. The supernatant was injected onto a Mono Q column. CK II was monitored with [gamma-32P]GTP and its specific substrate RRREEETEEE. The CK II stimulators, spermine and polylysine, the inhibitors heparin, quercetin, poly (Glu-Tyr) 4:1 and 2,3-bisphosphoglycerate were used for identification. CK II activity in metastatic melanoma samples was about 2.5-fold higher than in dermal nevus. These results support our hypothesis that CK II takes a central role in the non-transformed and transformed skin proliferation.[1]References
- Enhanced casein kinase II activity in metastatic melanoma. Mitev, V., Miteva, L., Botev, I., Houdebine, L.M. J. Dermatol. Sci. (1994) [Pubmed]
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