Spatially resolved 3D metabolomic profiling in tissues.

Spatially resolved 3D metabolomic profiling in tissues.
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DOI:
10.1126/sciadv.abd0957
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发表时间:
2021-01
期刊:
影响因子:
13.6
通讯作者:
Coskun AF
Coskun AF
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Ganesh S;Hu T;Woods E;Allam M;Cai S;Henderson W;Coskun AF

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Spatially resolved metabolic profiling and isotope-tagged protein analysis revealed unique lipid distributions in tissues. Spatially resolved RNA and protein molecular analyses have revealed unexpected heterogeneity of cells. Metabolic analysis of individual cells complements these single-cell studies. Here, we present a three-dimensional spatially resolved metabolomic profiling framework (3D-SMF) to map out the spatial organization of metabolic fragments and protein signatures in immune cells of human tonsils. In this method, 3D metabolic profiles were acquired by time-of-flight secondary ion mass spectrometry to profile up to 189 compounds. Ion beams were used to measure sub–5-nanometer layers of tissue across 150 sections of a tonsil. To incorporate cell specificity, tonsil tissues were labeled by an isotope-tagged antibody library. To explore relations of metabolic and cellular features, we carried out data reduction, 3D spatial correlations and classifications, unsupervised K-means clustering, and network analyses. Immune cells exhibited spatially distinct lipidomic fragment distributions in lymphatic tissue. The 3D-SMF pipeline affects studying the immune cells in health and disease.
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