[Particularly interesting were the observations that: 1) despite their nearly identical sequences and close chromosomal proximity, the six beta CG genes are distinguished from one another within the same and different cell types by their extent and pattern of methylation; 2) the beta CG locus is significantly hypomethylated in placenta, a state maintained in choriocarcinoma cells (JAr); 3) the beta CG gene cluster is unmethylated at a limited set of sites in DNA from both 2RA (a transformed fibroblast cell line that does not produce beta-subunit) and CBT (a glioblastoma cell line that produces beta-subunit ectopically), suggesting that general demethylation of the domain does not accompany activation of the locus in CBT but rather that site-specific changes may be responsible, at least in part, for inappropriate beta CG expression; and 4) the ratio of beta CG gene 3 transcripts to beta CG gene 5 transcripts is at least 10-fold higher in CBT cells than in JAr cells, suggesting that the reduced methylation in CBT cells of gene 3 compared to gene 5 may be a factor contributing to the activity of these genes.]. Sentence from MEDLINE/PubMed, a database of the U.S. National Library of Medicine.
Gene-disease associations inferred from text-mining the literature.
DisGeNET evidence - LITERATURE