Abstract:
:Addition of ATP to cultures of transformed mouse fibroblasts, 3T6 cells, resulted in cell growth inhibition, whereas the growth of the non-transformed counterparts, 3T3 cells, was only slightly affected. The inhibition was found to be specific for adenine nucleotides, and concentration dependent. At relatively low concentrations (e.g., 1.0 mM) the effect of ATP was cytostatic, whereas at higher concentrations (e.g., 1.0 mM) a cytotoxic effect was exerted. ATP-resistant variants of 3T6 cells were selected by exposure of cultures to gradually elevated concentrations of ATP. The variants were found to resemble the non-transformed counterparts, 3T3 cells, more than the 3T6 parent cells, by the following criteria: ATP-induced alterations in the membrane potential, changes in membrane permeability, cell growth inhibition, and colony formation on soft agar. The data indicate that long exposure of the transformed cells to external ATP results in redifferentiation and reduction in their tumorigenicity.
journal_name
J Cell Physioljournal_title
Journal of cellular physiologyauthors
Belzer I,Friedberg Idoi
10.1002/jcp.1041400318subject
Has Abstractpub_date
1989-09-01 00:00:00pages
524-9issue
3eissn
0021-9541issn
1097-4652journal_volume
140pub_type
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