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Obesity-instructed TREM2high macrophages identified by comparative analysis of diabetic mouse and human kidney at single cell resolution

Subramanian, A.; Vernon, K.; Zhou, Y.; Marshall, J.; Alimova, M.; Zhang, F.; Slyper, M.; Waldman, J.; Montesinos, M.; Dionne, D.; Nguyen, L.; Cuoco, M. S.; Dubinsky, D.; Purnell, J.; Keller, K.; Turner, S. H.; Grinkevich, E.; Ghoshal, A.; Weins, A.; Villani, A.-C.; Chang, S.; Rosenblatt-Rosen, O.; Shaw, J. L.; Regev, A.; Greka, A.

2021-05-30 genomics
10.1101/2021.05.30.446342 bioRxiv
Show abstract

Mouse models are a tool for studying the mechanisms underlying complex diseases; however, differences between species pose a significant challenge for translating findings to patients. Here, we used single-cell transcriptomics and orthogonal validation approaches to provide cross-species taxonomies, identifying shared broad cell classes and unique granular cellular states, between mouse and human kidney. We generated cell atlases of the diabetic and obese kidney using two different mouse models, a high-fat diet (HFD) model and a genetic model (BTBR ob/ob), at multiple time points along disease progression. Importantly, we identified a previously unrecognized, expanding Trem2high macrophage population in kidneys of HFD mice that matched human TREM2high macrophages in obese patients. Taken together, our cross-species comparison highlights shared immune and metabolic cell-state changes.

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