Extracellular and intracellular adenine nucleotides (AN) impact on all central processes in biology and medicine. AN are essential and ubiquitous signaling molecules involved in regulating universal cellular processes, including (i) cell-cell communication and (ii) intracellular signaling.
Unresolved issues regarding the signaling function of extracellular AN in inflammation, e.g. adenosine triphosphate (ATP) or nicotinamide adenine dinucleotide (NAD), relate to the timing and location of their release, their conversion by ecto-enzymes, and their biological role within the balance of inflammatory processes. Likewise, the precise role of intracellular AN second messengers, e.g. nicotinic acid adenine dinucleotide phosphate (NAADP) or 3’,5’-cyclic adenosine monophosphate (cAMP), in the spatio-temporal control of signaling processes by forming or modulating microdomains with their metabolizing enzymes, specific binding proteins or receptors, or target ion channels remains largely unknown.
The central goal of the research consortium is to further our understanding of the regulatory roles of AN and their kinetics in the context of inflammatory diseases. Specific aims relate to (i) modulation of the balance between pro- and anti-inflammatory processes by AN converting ecto-nucleotidases and purinergic receptors, and to (ii) AN-driven intracellular calcium signaling and cAMP signaling in inflammation.
NEW PRESIDENT OF THE ECS
At the recent general Assembly of the European Calcium Society Prof. Andreas Guse was announced as the new President of the ECS. Furthermore Geert Bultynck is replacing Jan Parys as General Secretary. Congratulations to both!!
The international scientific community has lost its pioneer in purinergic signalling! Geoffrey Burnstock died on the 2nd of June 2020 at the age of 91 in Melbourne (Australia). Our Collaborative Research Centre SFB1328 on adenine nucleotides in immunity and inflammation is unconceivable without Geoff Burnstock’s seminal work. Several times it has been a privilege to have Geoff Burnstock as plenary speaker during international meetings organised by members of the SFB1328.
For further announcements see:
Löhndorf A, Hosang L, Dohle W, Odoardi, Waschkowski SA, Marry S, Diercks BP, Flügel A, Guse AH (2021) 2-Methoxyestradiol and its derivatives inhibit store-operated Ca2+ entry in T cells: identification of a new and potent inhibitor. BBA - Molecular Cell Research, in press
Guse AH, Gil Montoya DC, Diercks BP (2021) Mechanisms and functions of calcium microdomains produced by ORAI channels, d-myo-inositol 1,4,5-trisphosphate receptors, or ryanodine receptors. Pharmacol Ther 223:107804
Benzi A, Sturla L, Heine M, Fischer AW, Spinelli S, Magnone M, Sociali G, Parodi A, Fenoglio D, Emionite L, Koch-Nolte F, Mittrücker HW, Guse AH, De Flora A, Zocchi E, Heeren J, Bruzzone S (2021) CD38 downregulation modulates NAD + and NADP(H) levels in thermogenic adipose tissues. Biochim Biophys Acta Mol Cell Biol Lipids 1866:158819
Rissiek B, Heeren J, Koch-Nolte F, Mittrücker HW, Magnus T. (2021) Comment on "Mice Lacking the Purinergic Receptor P2X5 Exhibit Defective Inflammasome Activation and Early Susceptibility to Listeria monocytogenes". J Immunol. 206:667
Perez-Alvarez A, Fearey BC, O'Toole RJ, Yang W, Arganda-Carreras I, Lamothe-Molina PJ, Moeyaert B, Mohr MA, Panzera LC, Schulze C, Schreiter ER, Wiegert JS, Gee CE, Hoppa MB, Oertner TG (2020) Freeze-frame imaging of synaptic activity using SynTagMA. Nat Commun 11:2464
Fischer AW*, Jaeckstein MY*, Gottschling K, Heine M, Sass F, Mangels N, Schlein C, Worthmann A, Bruns OT, Yuan Y, Zhu H, Chen O, Ittrich H, Nilsson SK, Stefanicka P, Ukropec J, Balaz M, Dong H, Sun W, Reimer R, Scheja L, Heeren J (2020) Lysosomal lipoprotein processing in endothelial cells stimulates adipose tissue thermogenic adaptation. Cell Metab S1550-4131(20)30656-2 *shared first authors