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- W4313453642 abstract "Spatial transcriptomics is a novel technique that provides RNA-expression data with tissue-contextual annotations. Quality assessments of such techniques using end-user generated data are often lacking. Here, we evaluated data from the NanoString GeoMx Digital Spatial Profiling (DSP) platform and standard processing pipelines. We queried 72 ROIs from 12 glioma samples, performed replicate experiments of eight samples for validation, and evaluated five external datasets. The data consistently showed vastly different signal intensities between samples and experimental conditions that resulted in biased analysis. We evaluated the performance of alternative normalization strategies and show that quantile normalization can adequately address the technical issues related to the differences in data distributions. Compared to bulk RNA sequencing, NanoString DSP data show a limited dynamic range which underestimates differences between conditions. Weighted gene co-expression network analysis allowed extraction of gene signatures associated with tissue phenotypes from ROI annotations. Nanostring GeoMx DSP data therefore require alternative normalization methods and analysis pipelines." @default.
- W4313453642 created "2023-01-06" @default.
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- W4313453642 date "2023-01-01" @default.
- W4313453642 modified "2023-10-14" @default.
- W4313453642 title "Alternative normalization and analysis pipeline to address systematic bias in NanoString GeoMx Digital Spatial Profiling data" @default.
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- W4313453642 doi "https://doi.org/10.1016/j.isci.2022.105760" @default.
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