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Related Experiment Video

Updated: May 24, 2025

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Nuclei Isolation From Murine and Human Periosteum For Transcriptomic Analyses.

Simon Perrin1, Cassandre Goachet1, Maria Ethel1

  • 1Univ Paris Est Creteil, INSERM, IMRB, Creteil, France.

Bio-Protocol
|March 3, 2025
PubMed
Summary

This study presents a new method for isolating nuclei from periosteum and fracture callus for single-nucleus RNA sequencing. This optimized protocol captures diverse cell types for better understanding bone repair.

Keywords:
Fluorescence-activated nuclei sortingFracture callusNuclei isolationPeriosteumSingle-nucleus RNA-seq

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Area of Science:

  • Regenerative Medicine
  • Molecular Biology
  • Genomics

Background:

  • Bone repair relies on skeletal stem/progenitor cells (SSPCs) from the periosteum.
  • Understanding periosteal response to injury requires detailed cell transcriptomics.
  • Current methods like enzymatic dissociation can skew results.

Purpose of the Study:

  • To develop and optimize a protocol for isolating high-quality nuclei from periosteum and fracture callus.
  • To enable accurate single-nucleus RNA sequencing of bone repair environments.
  • To capture the full cellular diversity in periosteal tissue.

Main Methods:

  • Optimized protocol for nuclei isolation from intact periosteum and fracture callus.
  • Utilized mechanical extraction and fluorescence-based nuclei sorting.
  • Adapted for fresh murine and human periosteum, and murine fracture callus.

Main Results:

  • Successfully isolated high-quality nuclei suitable for transcriptomic analysis.
  • Protocol captures a comprehensive diversity of cell types, reflecting in vivo composition.
  • Demonstrated adaptability for both fresh and frozen tissue samples.

Conclusions:

  • The optimized nuclei isolation protocol provides a more accurate representation of periosteal and fracture callus cellularity.
  • This method overcomes limitations of enzymatic dissociation for single-nucleus RNA sequencing.
  • Enables deeper insights into the molecular mechanisms of bone regeneration.