期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：1979
卷号：76
期号：12
页码：6411-6414
DOI：10.1073/pnas.76.12.6411
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：Nicotinamide and its analogues were evaluated for their activity as inducers of differentiation of murine erythroleukemia cells in culture. N'-Methylnicotinamide was the most effective of the compounds tested; at its optimal concentration it was more effective than dimethyl sulfoxide. With 8-10 mM N'-methylnicotinamide, almost all the cells contained hemoglobin (benzidine-reactive) after a 60-hr culture. Commitment to differentiate, assayed by transfer of the cells to semisolid medium without inducers, occurred much earlier and was more extensive with N'-methylnicotinamide than that with dimethyl sulfoxide or nicotinamide. Increase in globin mRNA was greater in the cells cultured with N'-methylnicotinamide than in cells cultured with dimethyl sulfoxide or nicotinamide. The relationship between the inducing activities of nicotinamide analogues and their effect on poly(ADP-ribose) polymerase in vitro was studied. All the compounds studied that had strong inhibitory effects on poly(ADP-ribose) polymerase in vitro induced differentiation of erythroleukemia cells in culture. This property is not a prerequisite of inducers; N'-methylnicotinamide did not inhibit the enzyme in vitro.
