Biomaterial Database

DNA methylation levels in human and murine melanoma cell lines of varying metastatic potential. 1986

E J Ormerod, and C A Everett, and M Finch, and I R Hart

DNA methylation levels were measured in a series of murine and human melanoma cell lines consisting of matched variants of low and high experimental metastatic capacity. The percentage of cytosine residues modified to 5-methylcytosine ranged between 2.13-3.92% in these lines. Ten cell lines were established in culture from individual lung tumor nodules produced in nude mice by i.v. injection of DX-3 human melanoma cells. Upon reinjection into groups of nude mice the individual lines manifested marked diversity for lung nodule formation (median number of pulmonary tumor nodules ranging from less than 10/group-greater than 100/group). DNA methylation levels in these lines were also heterogeneous (range 1.59 +/- 0.13 (SD)-4.04 +/- 0.15%) but no correlation was detected between methylation status of the genomic DNA and metastatic capacity.

UI	MeSH Term	Description	Entries
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
D008745	Methylation	Addition of methyl groups. In histo-chemistry methylation is used to esterify carboxyl groups and remove sulfate groups by treating tissue sections with hot methanol in the presence of hydrochloric acid. (From Stedman, 25th ed)	Methylations
D009362	Neoplasm Metastasis	The transfer of a neoplasm from one organ or part of the body to another remote from the primary site.	Metastase,Metastasis,Metastases, Neoplasm,Metastasis, Neoplasm,Neoplasm Metastases,Metastases
D002460	Cell Line	Established cell cultures that have the potential to propagate indefinitely.	Cell Lines,Line, Cell,Lines, Cell
D003596	Cytosine	A pyrimidine base that is a fundamental unit of nucleic acids.
D004273	DNA, Neoplasm	DNA present in neoplastic tissue.	Neoplasm DNA
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D001374	Azacitidine	A pyrimidine analogue that inhibits DNA methyltransferase, impairing DNA methylation. It is also an antimetabolite of cytidine, incorporated primarily into RNA. Azacytidine has been used as an antineoplastic agent.	Azacytidine,5-Azacytidine,NSC-102816,Vidaza,5 Azacytidine,NSC 102816,NSC102816
D044503	5-Methylcytosine	A methylated nucleotide base found in eukaryotic DNA. In ANIMALS, the DNA METHYLATION of CYTOSINE to form 5-methylcytosine is found primarily in the palindromic sequence CpG. In PLANTS, the methylated sequence is CpNpGp, where N can be any base.	5-Methylcytosine Monohydrochloride,5 Methylcytosine,5 Methylcytosine Monohydrochloride,Monohydrochloride, 5-Methylcytosine