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Novel biomarkers of intervertebral disc cells and evidence of stem cells in the intervertebral disc.

Abstract：

OBJECTIVE:Rat intervertebral disc (IVD) is one of the most commonly used and cost-effective alternative models for human IVD. Many IVD related clinical studies need to be pre-tested on rat IVDs. However, studies on the heterogeneous cell clusters of the rat IVD are inadequate, and a further understanding of the marker genes and cell phenotypes of healthy mature IVD cells is essential. METHODS:In this study, we used the 10X Genomics technology to analyze the single-cell transcriptome of purified wild-type rat IVDs. RESULTS:We identified potentially new gene markers of IVDs via single-cell sequencing. Based on the unsupervised cluster analysis of 13,578 single-cell transcripts, 3 known IVD cell types were identified. We provided a complete single-cell gene expression map of the IVD. Immunohistochemical and immunofluorescence images of rat disc sections confirmed the new marker genes of all cell types. One group of heterologous cell groups expressed multi-functional stem cell (MSC)-specific genes, indicating the stem cell potential of IVD cells. CONCLUSION:We provided the phenotype and marker genes of IVD cells at the single-cell level, reconfirmed existing data, and proposed new marker genes, including MSC marker genes. By identifying more accurate target cells and genes, our results pave the way for further study of the response of individual disc cells to disease states and provide the basis for future disc regeneration therapies.

journal_name

Osteoarthritis Cartilage

journal_title

Osteoarthritis and cartilage

authors

Wang J,Huang Y,Huang L,Shi K,Wang J,Zhu C,Li L,Zhang L,Feng G,Liu L,Song Y

doi

10.1016/j.joca.2020.12.005

subject

Has Abstract

pub_date

2020-12-15 00:00:00

eissn

1063-4584

issn

1522-9653

pii

S1063-4584(20)31221-8

pub_type

杂志文章

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