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Open Access 01-12-2022 | Nerve Injury | Research

An RNA-sequencing transcriptome of the rodent Schwann cell response to peripheral nerve injury

Authors: Amanda Brosius Lutz, Tawaun A. Lucas, Glenn A. Carson, Christine Caneda, Lu Zhou, Ben A. Barres, Marion S. Buckwalter, Steven A. Sloan

Published in: Journal of Neuroinflammation | Issue 1/2022

Abstract

Background

The important contribution of glia to mechanisms of injury and repair of the nervous system is increasingly recognized. In stark contrast to the central nervous system (CNS), the peripheral nervous system (PNS) has a remarkable capacity for regeneration after injury. Schwann cells are recognized as key contributors to PNS regeneration, but the molecular underpinnings of the Schwann cell response to injury and how they interact with the inflammatory response remain incompletely understood.

Methods

We completed bulk RNA-sequencing of Schwann cells purified acutely using immunopanning from the naïve and injured rodent sciatic nerve at 3, 5, and 7 days post-injury. We used qRT-PCR and in situ hybridization to assess cell purity and probe dataset integrity. Finally, we used bioinformatic analysis to probe Schwann cell-specific injury-induced modulation of cellular pathways.

Results

Our data confirm Schwann cell purity and validate RNAseq dataset integrity. Bioinformatic analysis identifies discrete modules of genes that follow distinct patterns of regulation in the 1st days after injury and their corresponding molecular pathways. These findings enable improved differentiation of myeloid and glial components of neuroinflammation after peripheral nerve injury and highlight novel molecular aspects of the Schwann cell injury response such as acute downregulation of the AGE/RAGE pathway and of secreted molecules Sparcl1 and Sema5a.

Conclusions

We provide a helpful resource for further deciphering the Schwann cell injury response and a depth of transcriptional data that can complement the findings of recent single cell sequencing approaches. As more data become available on the response of CNS glia to injury, we anticipate that this dataset will provide a valuable platform for understanding key differences in the PNS and CNS glial responses to injury and for designing approaches to ameliorate CNS regeneration.

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Title: An RNA-sequencing transcriptome of the rodent Schwann cell response to peripheral nerve injury
Authors: Amanda Brosius Lutz
Tawaun A. Lucas
Glenn A. Carson
Christine Caneda
Lu Zhou
Ben A. Barres
Marion S. Buckwalter
Steven A. Sloan
Publication date: 01-12-2022
Publisher: BioMed Central
Keyword: Nerve Injury
Published in: Journal of Neuroinflammation / Issue 1/2022
Electronic ISSN: 1742-2094
DOI: https://doi.org/10.1186/s12974-022-02462-6

Keynote webinar | Spotlight on medication adherence

Springer Medicine

An RNA-sequencing transcriptome of the rodent Schwann cell response to peripheral nerve injury

Abstract

Background

Methods

Results

Conclusions

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Background

Methods

Results

Conclusions

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