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Chinese Journal of Geriatric Orthopaedics and Rehabilitation(Electronic Edition) ›› 2021, Vol. 07 ›› Issue (04): 193-200. doi: 10.3877/cma.j.issn.2096-0263.2021.04.001

• Basic Research •     Next Articles

Bioinformatics analysis of CD8+ T cells, follicular helper T cells and plasma cells infiltration in intervertebral disc degeneration

Yicheng Gao1, Guangzhi Zhang1, Qiqi Xie1, Yajun Deng1, Enhui Ren1, Zuolong Wu1, Xuegang He1, Xuewen Kang1()   

  1. 1. Department of Orthopaedics, Lanzhou University Second Hospital, Lanzhou 730030, China; Key Laboratory of Osteoarthritis of Gansu Province, Lanzhou 730030, China
  • Received:2020-06-30 Online:2021-08-05 Published:2021-09-08
  • Contact: Xuewen Kang

Abstract:

Objective

To screen the key genes of intervertebral disc degeneration (IDD) tissues and non-degeneration tissues, and to further analyze the infiltration of immune cells.

Methods

Download the IDD expression profile chip dataset from the GEO database, and use R software to screen differentially expressed genes (DEGs) in degenerate and non-degenerate tissues, and then construct a protein-protein interaction network (PPI). Screen out the hub gene. Finally, for the first time, a scientific deconvolution algorithm (CIBERSORT) was used to analyze the infiltration of immune cells in IDD tissues to reveal the role of immune cell infiltration in IDD.

Results

A total of 166 DEGs and 10 hub genes were screened. Immune cell infiltration analysis found that monocytes in IDD tissues were positively correlated with T cells regulatory, and eosinophils were negatively correlated with monocytes and T cells regulatory; CD8+T cells and follicular helper T cells were less infiltrated in IDD. while plasma cells are more infiltrated in IDD tissues; dendritic cells resting, plasma cells, NK cells resting and T cells regulatory interact strongly with other immune cells. T cells follicular helper, Macrophages M2, and B cells na?ve assist weak interaction with other immune cells.

Conclusions

Our results reveal the hub gene in IDD and immune cell infiltration analysis shows that CD8+T cells, follicular helper T cells, and plasma cells are closely related to the development of IDD. To provide a new idea for further exploring the molecular mechanism of IDD.

Key words: Intervertebral disc degeneration, CD8+ T cells, Follicular helper T cells, Plasma cells, CIBERSORT

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