Title : Spermine acts as a negative regulator of macrophage differentiation in human myeloid leukemia cells.

Pub. Date : 2004 Oct 15

PMID : 15492267






2 Functional Relationships(s)
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1 This negative regulation was established by showing that the PMA-induced macrophage phenotype, but not PMA-associated replication arrest, was abrogated (a) by replenishing the PMA-evoked decrease in cellular spermine levels with this polyamine from an exogenous source and (b) by blocking PMA-induced expression of the polyamine catabolic enzyme N(1)-spermidine/spermine acetyltransferase (SSAT) with antisense oligonucleotides in the presence of low substrate level. Polyamines spermidine/spermine N1-acetyltransferase 1 Homo sapiens
2 This negative regulation was established by showing that the PMA-induced macrophage phenotype, but not PMA-associated replication arrest, was abrogated (a) by replenishing the PMA-evoked decrease in cellular spermine levels with this polyamine from an exogenous source and (b) by blocking PMA-induced expression of the polyamine catabolic enzyme N(1)-spermidine/spermine acetyltransferase (SSAT) with antisense oligonucleotides in the presence of low substrate level. Polyamines spermidine/spermine N1-acetyltransferase 1 Homo sapiens