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Open Source ImmGen: network perspective on metabolic diversity among mononuclear phagocytes

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Item Type:Preprint
Title:Open Source ImmGen: network perspective on metabolic diversity among mononuclear phagocytes
Creators Name:Gainullina, A. and Huang, L.H. and Todorov, H. and Kim, K. and Yng, L.S. and Kent, A. and Jia, B. and Seddu, K. and Krchma, K. and Wu, J. and Crozat, K. and Tomasello, E. and Narang, V. and Dress, R. and See, P. and Scott, C. and Gibbings, S. and Bajpai, G. and Desai, J.V. and Maier, B. and This, S. and Wang, P. and Aguilar, S.V. and Poupel, L. and Dussaud, S. and Zhou, T.A. and Angeli, V. and Blander, J.M. and Choi, K. and Dalod, M. and Dzhagalov, I. and Gautier, E.L. and Jakubzick, C. and Lavine, K. and Lionakis, M.S. and Paidassi, H. and Sieweke, M.H. and Ginhoux, Fl. and Guilliams, M. and Benoist, C. and Merad, M. and Randolph, G.J. and Sergushichev, A. and Artyomov, M.N.
Abstract:We dissect metabolic variability of mononuclear phagocyte (MNP) subpopulations across different tissues through integrative analysis of three large scale datasets. Specifically, we introduce ImmGen MNP Open Source dataset that profiled 337 samples and extended previous ImmGen effort which included 202 samples of mononuclear phagocytes and their progenitors. Next, we analysed Tabula Muris Senis dataset to extract data for 51,364 myeloid cells from 18 tissues. Taken together, a compendium of data assembled in this work covers phagocytic populations found across 38 different tissues. To analyse common metabolic features, we developed novel network-based computational approach for unbiased identification of key metabolic subnetworks based on cellular transcriptional profiles in large-scale datasets. Using ImmGen MNP Open Source dataset as baseline, we define 9 metabolic subnetworks that encapsulate the metabolic differences within mononuclear phagocytes, and demonstrate that these features are robustly found across all three datasets, including lipid metabolism, cholesterol biosynthesis, glycolysis, and a set of fatty acid related metabolic pathways, as well as nucleotide and folate metabolism. We systematically define major features specific to macrophage and dendritic cell subpopulations. Among other things, we find that cholesterol synthesis appears particularly active within the migratory dendritic cells. We demonstrate that interference with this pathway through statins administration diminishes migratory capacity of the dendritic cells in vivo. This result demonstrates the power of our approach and highlights importance of metabolic diversity among mononuclear phagocytes.
Keywords:Animals, Mice
Publisher:Cold Spring Harbor Laboratory Press
Article Number:2020.07.15.204388
Date:16 July 2020
Official Publication:https://doi.org/10.1101/2020.07.15.204388

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