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The CRONIC-PPF Faculty
Ákos Heinemann is an established immunopharmacologist focusing on the regulation of leukocyte
trafficking as a fundamental principle of tissue inflammation, particularly in the lung. He has characterized novel
mediators and metabolic pathways that regulate the barrier function of the endothelium and its interaction with immune
cells and elucidated their therapeutic potential in various disease models in the lung. Until recently he has been
coordinating the doctoral programs MOLMED and was speaker of the FWF-funded doctoral college DK-MOLIN.
Currently, his team is investigating the role of metabolic alterations and ER stress in the initiation and maintenance
of lung fibrosis.
Project
Succinate and its metabolites alter pro-fibrotic monocyte functions in progressive pulmonary fibrosis
Co-PI: Rishi Rajesh
Research interests
- Technical development and clinical implementation of the basophil activation test (BAT) as a novel
diagnostic tool in allergology, particularly in Hymenoptera venom allergies.
(Sturm et al., 20095 [↗];
Bokanovic et al., 2013 [↗];
Sturm et al., 2004 [↗])
- Characterization of prostaglandin D2, its active metabolites and their receptors
(CRTH2/DP D2 and DP D1) as novel targets in eosinophilic responses in
allergic diseases and non-allergic inflammation. We described several novel small molecule antagonists
of CRTH2 and their efficacy to inhibit eosinophil responses, have shown that that DP D1
receptors are involved in eosinophil survival and migration and that both receptors are important
signaling molecules in macrophages and innate lymphoid cells (ILC2).
(Mathiesen et al., 2005 [↗];
Schratl et al., 2007 [↗];
Sedej et al., 2012 [↗];
Schmidt et al., 2013 [↗];
Jandl et al., 2016 [↗];
Maric et al., 2019 [↗])
- Protective role of EP4 receptors in lung pathologies. We could delineate the protective
effects of prostaglandin E2 in the lung as a bundle of mechanisms in different cell
types mediated by the G-protein-coupled receptor EP4. Activation of EP4 receptors
attenuates eosinophil recruitment and activation, ILC2 activity, and cytokine secretion, but strengthens
the endothelial barrier. Deposition of collagen, proliferation of myofibroblasts and recruitment of
fibrocytes is likewise reversed by blockade of PGE2 metabolism. We observed corresponding
beneficial effects in mouse models of allergic airway inflammation, acute lung injury and lung fibrosis.
(Bärnthaler et al., 2020 [↗];
Maric et al., 2018 [↗];
Luschnig-Schratl et al., 2011 [↗];
Jandl et al., 2016 [↗];
Konya et al., 2013 [↗];
Sturm et al., 2008 [↗])
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