Cell lines

Growth-arrested AML193 cells

Preparation method

The solubility of this compound in sterile water is 100 mM. General tips for obtaining a higher concentration: Please warm the tube at 37 ℃ for 10 minutes and/or shake it in the ultrasonic bath for a while. Stock solution can be stored below - 20 ℃ for several months.

Reacting condition

0 ~ 15 μM

Applications

In growth-arrested AML193 cells, 8-Bromo-cAMP significantly increased DNA synthesis, with the ED50 value of approximately 10 μM. At the doses over 2.5 μM, a toxic effect was observed. Moreover, the addition of 1 μM 8-Bromo-cAMP synergized the IL-3-induced mitogenic response. In addition, 8-Bromo-cAMP at the concentration of 1μM resulted in maximal Erk phosphorylation. But the effect of 8-Bromo-cAMP on Erk phosphorylation was transient, with the maximal stimulation shown between 1 and 5 mins.

8-Bromo-cAMP is a cAMP-analogues. [1]

cAMP can have an effect on the proliferative response of a cell. Either the effect is a positive or a negative regulator depending on the cell types. There is also variable effect of cAMP in hematopoietic cell lines. CAMP-analogues can significantly inhibit the erythropoietin-stimulated proliferation.[1]

8-Bromo-cAMP increased the cellular content of mRNA encoding the hCG a- and β-subunits and prevented the increase in fibronectin mRNA. This is determined by blot hybridization analysis using specific cDNA probes. 8-Bromo-cAMP also induced phosphorylation of Erk1,2 in AML193 cells. 8-Bromo-cAMP is an agent in AML193 cells and activates Erk1,2 , this condition happens does not accompanied by the involvement of Shc phosphorylation.[1,2]

8-bromo-cAMP increases catecholamine biosynthesis and produces an increase both in the activity and phosphorylation of tyrosine hydroxylase. 8-bromo-cAMP also promotes alterations in the synthesis and secretion of specific proteins, including fibronectin and the subunits of hCG by regulating mRNA expression.[2,3]

References:
[1]Ulloa-Aguirre A,?August AM,?etal. , 8-Bromo-adenosine?3',5'-monophosphate?regulates?expression?of?chorionic?gonadotropin?and fibronectin in human cytotrophoblasts. J Clin Endocrinol Metab.?1987 May;64(5):1002-9.
[2] Rene e M. Y. Barge, J.H. Frederik Falkenburg, etal., 8-Bromo-cAMP induces a proliferative response in an IL-3 dependent leukemic cell line and activates Erk1,2 via a Shc-independent pathway. Biochimica et Biophysica Acta 1355 (1997) 141–146.
[3] Haycock JW, Bennett WF, etal. , Multiple site phosphorylation of tyrosine hydroxylase. Differential regulation in situ by a 8-bromo-cAMP and acetylcholine. J Biol Chem. 1982 Nov 25;257(22):13699-703.