Project B02 – Melanocortin 4 receptor signaling revisited: from ligand/receptor interphase to signaling modulation
The melanocortin 4 receptor (MC4R) is a key G protein-coupled receptor (GPCR) in hypothalamic weight regulation. This project aims to achieve a comprehensive picture of MC4R signaling dynamics in the presence of various ligands. Research questions of this project are: (i) What are the determinants in the dynamic interplay between MC4R and different ligands (cooperation with A01 (Scheerer)); and which pathways are activated and how are they evolutionary conserved (cooperation with C04 (Prömel/Schöneberg)? (ii) Which MC4R pathways are required for satiety-induction (induced pluripotent stem cell (iPSC) approach) and which MC4R pathways have to be partially blocked to reduce side effects (cooperation with C03 (Annibale/Lohse))?
Contact
Resources
- Characterization of (fluorophor-labeled) ligands at human iPSCs differentiated into hypothalamic neurons
Publications
Heyder N, Kleinau G, Szczepek M, Kwiatkowski D, Speck D, Soletto L, Cerdá-Reverter JM, Krude H, Kühnen P, Biebermann H, Scheerer P. Signal Transduction and Pathogenic Modifications at the Melanocortin-4 Receptor: A Structural Perspective. Front Endocrinol (Lausanne). 2019 Jul 31;10:515. doi: 10.3389/fendo.2019.00515. eCollection 2019. PMID: 31417496
Paisdzior S, Dimitriou IM, Schöpe PC, Annibale P, Scheerer P, Krude H, Lohse MJ, Biebermann H, Kühnen P. Differential Signaling Profiles of MC4R Mutations with Three Different Ligands. Int J Mol Sci. 2020 Feb 12;21(4). pii: E1224. doi: 10.3390/ijms21041224. PMID: 32059383
Biebermann H, Kühnen P, Kleinau G, Krude H. The neuroendocrine circuitry controlled by POMC, MSH, and AGRP. Handb Exp Pharmacol. 2012; 209:47-75.
Clément K, Biebermann H, Farooqi IS, Van der Ploeg L, Wolters B, Poitou C, Puder L, Fiedorek F, Gottesdiener K, Kleinau G, Heyder N, Scheerer P, Blume-Peytavi U, Jahnke I, Sharma S, Mokrosinski J, Wiegand S, Müller A, Weiß K, Mai K, Spranger J, Grüters A, Blankenstein O, Krude H, Kühnen P. MC4R agonism promotes durable weight loss in patients with leptin receptor deficiency. Nat Med. 2018; 24:551-5.
Kühnen P, Clément K, Wiegand S, Blankenstein O, Gottesdiener K, Martini LL, Mai K, Blume-Peytavi U, Grüters A, Krude H. Proopiomelanocortin Deficiency Treated with a Melanocortin-4 Receptor Agonist. N Engl J Med. 2016; 375:240-6.
Hildebrand L, Rossbach B, Kühnen P, Gossen M, Kurtz A, Reinke P, Seemann P, Stachelscheid H. Generation of integration free induced pluripotent stem cells from fibrodysplasia ossificans progressiva (FOP) patients from urine samples. Stem Cell Res. 2016; 16:54-8.
Biebermann H, Castañeda TR, van Landeghem F, von Deimling A, Escher F, Brabant G, Hebebrand J, Hinney A, Tschöp MH, Grüters A, Krude H. A role for beta-melanocyte-stimulating hormone in human body-weight regulation. Cell Metab. 2006; 3:141-6.
Krude H, Biebermann H, Luck W, Horn R, Brabant G, Grüters A. Severe early-onset obesity, adrenal insufficiency and red hair pigmentation caused by POMC mutations in humans. Nat Genet. 1998; 19:155-7.
Kühnen P, Krude H, Biebermann H. Melanocortin-4 Receptor Signalling: Importance for Weight Regulation and Obesity Treatment. Trends Mol Med. 2019; 25:136-48.
Kühnen P, Handke D, Waterland RA, Hennig BJ, Silver M, Fulford AJ, Dominguez-Salas P, Moore SE, Prentice AM, Spranger J, Hinney A, Hebebrand J, Heppner FL, Walzer L, Grötzinger C, Gromoll J, Wiegand S, Grüters A, Krude H. Interindividual Variation in DNA Methylation at a Putative POMC Metastable Epiallele Is Associated with Obesity. Cell metabolism. 2016; 24:502-9.
Biebermann H, Krude H, Elsner A, Chubanov V, Gudermann T, Grüters A. Autosomal-dominant mode of inheritance of a melanocortin-4 receptor mutation in a patient with severe early-onset obesity is due to a dominant-negative effect caused by receptor dimerization. Diabetes. 2003; 52:2984-8.
Piechowski CL, Rediger A, Lagemann C, Mühlhaus J, Müller A, Pratzka J, Tarnow P, Grüters A, Krude H, Kleinau G, Biebermann H. Inhibition of melanocortin-4 receptor dimerization by substitutions in intracellular loop 2. J Mol Endocrinol. 2013; 51:109-18
