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Enzymatic dissociation induces transcriptional and proteotype bias in brain cell populations

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Item Type:Article
Title:Enzymatic dissociation induces transcriptional and proteotype bias in brain cell populations
Creators Name:Mattei, D., Ivanov, A., van Oostrum, M., Pantelyushin, S., Richetto, J., Mueller, F., Beffinger, M., Schellhammer, L., Vom Berg, J., Wollscheid, B., Beule, D., Paolicelli, R.C. and Meyer, U.
Abstract:Different cell isolation techniques exist for transcriptomic and proteotype profiling of brain cells. Here, we provide a systematic investigation of the influence of different cell isolation protocols on transcriptional and proteotype profiles in mouse brain tissue by taking into account single-cell transcriptomics of brain cells, proteotypes of microglia and astrocytes, and flow cytometric analysis of microglia. We show that standard enzymatic digestion of brain tissue at 37 °C induces profound and consistent alterations in the transcriptome and proteotype of neuronal and glial cells, as compared to an optimized mechanical dissociation protocol at 4 °C. These findings emphasize the risk of introducing technical biases and biological artifacts when implementing enzymatic digestion-based isolation methods for brain cell analyses.
Keywords:Microglia, Astrocytes, Neurons, Enzymatic Digestion, Single-Cell Sequencing, Protocol, Microglia Isolation, Animals, Mice
Source:International Journal of Molecular Sciences
ISSN:1422-0067
Publisher:MDPI
Volume:21
Number:21
Page Range:7944
Date:1 November 2020
Official Publication:https://doi.org/10.3390/ijms21217944
PubMed:View item in PubMed

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