Enhancement of differentiation induction of mouse myelomonocytic leukemic cells by extracellular ATP

Journal of Cellular Physiology
M YamaguchiK Nagata

Abstract

We examined the effect of ATP on the terminal differentiation of mouse myelomonocytic leukemic M1 cells to macrophages. Although ATP alone did not induce M1 cell differentiation, addition of ATP with the differentiation inducer, interleukin 6 (IL-6), enhanced the induction of differentiation by IL-6 about two-fold. Comparison among several adenine nucleotides revealed that the order of effectiveness on differentiation enhancement was ATP > ADP > AMP > or = adenosine. Using reactive blue 2, a P2 receptor antagonist, we confirmed that the effect of ATP on the stimulation of differentiation was mediated through the P2 purinergic receptor. Examination of cytosolic [Ca2+] elevation by ATP and comparison of potency of differentiation enhancement among several ATP analogs demonstrated that the effect of differentiation enhancement was mediated through P2y purinergic receptors expressed on M1 cell surface. Within 3 h of exposure, ATP alone slightly increased the expression of differentiation-related immediate early response genes, c-myc and JunB, and ATP also enhanced the IL-6-induced expression of these genes. Induction of JunB expression by ATP analogs correlated with their potency of differentiation enhancement, which suggested that...Continue Reading

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Citations

Jun 26, 2013·Purinergic Signalling·Geoffrey Burnstock, Francesco Di Virgilio
Apr 16, 1998·British Journal of Pharmacology·J JinS P Kunapuli
Sep 1, 1996·Somatic Cell and Molecular Genetics·K AyyanathanS P Kunapuli
May 1, 1996·Journal of Receptor and Signal Transduction Research·G K AkbarS P Kunapuli

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