Analysis of the differences in the characteristics of mesenchymal stem cells derived from jaw and long bones based on single-cell RNA-sequencing
10.3760/cma.j.cn112144-20230824-00109
- VernacularTitle:基于单细胞测序分析颌骨和长骨间充质干细胞特性差异
- Author:
Hao WANG
1
;
Zekai ZHOU
;
Bingdong SUI
;
Fang JIN
;
Jun ZHOU
;
Chenxi ZHENG
Author Information
1. 第四军医大学口腔医院口腔组织病理学教研室 口颌系统重建与再生全国重点实验室 国家口腔疾病临床医学研究中心 陕西省口腔疾病国际联合研究中心，西安 710032
- Keywords:
Stem cells;
Mesenchymal stem cells;
Single-cell RNA-sequencing;
Mandible;
Femur
- From:
Chinese Journal of Stomatology
2024;59(3):247-254
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To study the whole bone marrow cellular composition of jaw and long bones, and further analyze the heterogeneity of mesenchymal stem cells (MSCs) derived from these two tissue, aiming at exploring the differences in functional characteristics of bone MSCs from different lineage sources.Methods:The Seurat package of R language was used to analyze the mandibular and femur whole bone marrow single-cell RNA-sequencing (scRNA-seq) datasets in the literature, and the subpopulations were annotated by reference to the marker genes reported by previous studies. The differentially expressed genes between mandible-derived MSCs (M-MSCs) and femur-derived MSCs (F-MSCs) were calculated, and cell-cell communication analysis between M-MSCs or F-MSCs with other cell populations was performed. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses were performed on up-regulated and down-regulated differentially expressed genes of M-MSCs, and Gene Set Enrichment Analysis (GSEA) was performed on M-MSCs or F-MSCs.Results:cRNA-seq analysis showed that the mandible and femur had the same bone marrow cell composition, but there were differences in the proportion of specific cell populations. Also, there were significantly differentially expressed genes between M-MSCs and F-MSCs. In addition, cell-cell communication analysis revealed differences in numbers of ligand-receptor pairs between M-MSCs or F-MSCs with other cell populations. Furthermore, GO, KEGG and GSEA analysis showed that M-MSCs had higher extracellular matrix production potential than F-MSCs, but had lower ability to regulate other cells in the bone marrow, especially immune cells.Conclusions:M-MSCs and F-MSCs showed distinct differences in the gene expression pattern and up-regulated signaling pathways, which may be closely related to the developmental sources and functional characteristics of jaw and long bones.
