Title : MRP4/ABCC4 expression is regulated by histamine in acute myeloid leukemia cells, determining cAMP efflux.

Pub. Date : 2021 Jan

PMID : 32333821






9 Functional Relationships(s)
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1 Multidrug resistance protein 4 (MRP4/ABCC4) expression is regulated by histamine in acute myeloid leukemia cells, determining cAMP efflux. Histamine ATP binding cassette subfamily C member 4 Homo sapiens
2 Multidrug resistance protein 4 (MRP4/ABCC4) expression is regulated by histamine in acute myeloid leukemia cells, determining cAMP efflux. Histamine ATP binding cassette subfamily C member 4 Homo sapiens
3 Acting through histamine H2 receptors histamine increases cAMP production/synthesis, while MRP4/ABCC4 is responsible for the exclusion of this cyclic nucleotide. Histamine ATP binding cassette subfamily C member 4 Homo sapiens
4 In this study, we show that histamine treatment induces MRP4/ABCC4 expression, augmenting cAMP efflux and that histamine, in combination with MRP inhibitors, is able to reduce AML cell proliferation. Histamine ATP binding cassette subfamily C member 4 Homo sapiens
5 In this study, we show that histamine treatment induces MRP4/ABCC4 expression, augmenting cAMP efflux and that histamine, in combination with MRP inhibitors, is able to reduce AML cell proliferation. Histamine ATP binding cassette subfamily C member 4 Homo sapiens
6 Histamine, through histamine H2 receptor, increases i-cAMP levels and induces MRP4 transcript and protein levels in U937, KG1a, and HL-60 cells. Histamine ATP binding cassette subfamily C member 4 Homo sapiens
7 Moreover, histamine induces MRP4 promoter activity in HEK293T cells transfected with histamine H2 receptor (HEK293T-H2 R). Histamine ATP binding cassette subfamily C member 4 Homo sapiens
8 Our results support that the cAMP/Epac-PKA pathway, and not MEK/ERK nor PI3K/AKT signaling cascades, is involved in histamine mediated upregulation of MRP4 levels. Histamine ATP binding cassette subfamily C member 4 Homo sapiens
9 Finally, the addition of histamine potentiates the inhibition of U937, KG1a, and HL-60 cell proliferation induced by MRP4 inhibitors. Histamine ATP binding cassette subfamily C member 4 Homo sapiens