Uni-Tübingen

P4: Crosstalk of cGMP and extracellular matrix signaling in atherosclerosis

Aims

To elucidate how the interplay of cGMP signaling and the extracellular matrix protein fibronectin affects the phenotypic modulation of vascular smooth muscle cells and thus plaque stability in atherosclerosis.

Questions and Methods

cGMP and Atherosclerosis

Vascular SMC cultures and tissues derived from wild-type and atherosclerotic mice will be studied to investigate phenotypic modulation. Expression studies, pharmacological treatment and single cell sequencing will elucidate the mechanism of Fn/cGMP interactions.

In a mouse model of atherosclerosis (ApoE-deficient mice) we will compare control and smooth-muscle specific Fn knockout mice. We will use FRET-based cGMP imaging and non-invasive PET imaging in vivo in cGMP sensor mice and PET-based reporter mouse lines, respectively.

Expression studies to analyze markers of modulated SMCs, ECM and components of the cGMP pathway are performed e.g. in liver and aorta to investigate the role of Fn in NASH or abdominal aortic aneurysms in the ApoE-deficient mice on high-fat diet.

Boston Internship

Blanton Lab

In the Blanton lab in Boston, the doctoral researchers will receive training in several biochemical screening methods, including GST-pulldown studies using a cGKI-LZM mutant protein, direct cGMP pulldowns, and standard immunoprecipitations.

Boston Co-mentor

Assist. Prof. Robert M. Blanton, MD

Link to Boston researcher lab

Doctoral Students

Malte Roeßing (graduated in April 2024)

Malte Roeßing did his undergraduate studies in Biology at the Heinrich-Heine-University in Duesseldorf, where he was especially interested in protein biochemistry. Therefore, he did his bachelor’s thesis in the department of plant biochemistry, which dealt with the characterization of protein with an unknown function. In his master’s studies at Heinrich-Heine-University in Duesseldorf, he focused on molecular biomedicine. Due to his rising interest in the biochemical and pharmaceutical research field, he decided to do his master’s thesis at the Bayer AG in Wuppertal in the Biochemistry Department of the Institute Lead Discovery. The combination of the research on atherosclerosis with investigation of the important cGMP signaling system is a unique challenge for him as a young scientist. Thus, he decided to take up this challenge as a doctoral student of the GRK 2381 “cGMP: From Bedside to Bench” in the group of Dr. Susanne Feil. Here he is investigating the role of the cGMP signaling pathway in disease models of atherosclerosis.

Timo Kopp

Timo Kopp got his bachelor’s degree in Biology at the Johannes-Gutenberg-University in Mainz, where he was especially interested in molecular genetics. Accordingly, he did his bachelor’s thesis at the Department of Organismic and Molecular Evolutionary Biology, where he characterized a protein of unknown function. He then continued to earn his master’s degree in Biomedicine, where he focused on immunology. Due to his growing interest for this field of research, he decided to do his master’s thesis at the Department of Dermatology of the University Medical Centre, in which he investigated the influence of coagulation factors on the differentiation of macrophages from monocytes. After his M.Sc., Timo joined the group of Dr. Susanne Feil, to do his PhD. Here, his research focuses on pressure induced cGMP signalling in vascular smooth muscle cells.

Moritz Lehners (associated Postdoc)

Moritz Lehners earned his Diploma in Biochemistry at the University of Tübingen with a focus on cellular signalling mechanisms and live cell imaging. His interest in the analysis of complex signalling networks prompted him to do his PhD in the Feil laboratory. Here he investigates the role of the cGMP signalling pathway in the plasticity of vascular smooth muscle cells and disease models of the cardiovascular system. Moritz graduated in summer 2022 and is currently continuing his research in the IFIB as a postdoc.


Key Publications

Feil S, Stowbur D, Schorg BF, Ehrlichmann W, Reischl G, Kneilling M, Pichler BJ, Feil R. Noninvasive Detection of Smooth Muscle Cell-Derived Hot Spots to Study Atherosclerosis by PET/MRI in Mice. Circ Res 2023, 10.1161/CIRCRESAHA.122.322296

Katagiri W, Yokomizo S, Ishizuka T, Yamashita K, Kopp T, Roessing M, Sato A, Iwasaki T, Sato H, Fukuda T, Monaco H, Manganiello S, Nomura S, Ng MR, Feil S, Ogawa E, Fukumura D, Atochin DN, Choi HS, Kashiwagi S. 2022. Dual near-infrared II laser modulates the cellular redox state of T cells and augments the efficacy of cancer immunotherapy. FASEB J 2022, 36:e22521.

Yokomizo S, Roessing M, Morita A, Kopp T, Ogawa E, Katagiri W, Feil S, Huang PL, Atochin DN, Kashiwagi S. Near-infrared II photobiomodulation augments nitric oxide bioavailability via phosphorylation of endothelial nitric oxide synthase. FASEB J 2022, 36:e22490.

Feil R, Lehners M, Stehle D, Feil S. Visualising and understanding cGMP signals in the cardiovascular system. Br J Pharmacol 2022,179:2394-412.

Feil S, Fehrenbacher B, Lukowski R, Essmann F, Schulze-Osthoff K, Schaller M, Feil R. Transdifferentiation of vascular smooth muscle cells to macrophage-like cells during atherogenesis. Circ Res 2014, 115:662-7