ArticleBMC musculoskeletal disorders2025
Exploring molecular disparities of H-type vasculature endothelial cells in osteonecrosis of the femoral head through single-cell analysis.
Article in BMC musculoskeletal disorders, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Macrophage immunometabolic reprogramming in inflammatory repair failure in osteonecrosis of the femoral head.Journal of orthopaedic translation · 2026Review
- Review
- Identifying coagulation-related biomarkers in steroid-induced osteonecrosis of the femoral head: implications for early diagnosis and treatment.Clinical and experimental medicine · 2026Article
- Immunomodulation in the repair of osteonecrosis of the femoral head: reprogramming strategies for macrophages and immune cells.Frontiers in immunology · 2026Review
- Targeting type H vessels with bioactive metabolites from traditional Chinese botanical drugs: a therapeutic strategy for skeletal disorders.Frontiers in pharmacology · 2025Review
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Authors and funding
8 authors.
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Abstract
objectiveRecent studies highlight the role of H-type vasculature in bone regeneration. This study, based on single-cell RNA sequencing (scRNA-seq), aims to explore the changes in H-type vasculature endothelial cells (H_ECs) in osteonecrosis of the femoral head (ONFH) and hip osteoarthritis (HOA), focusing on the death modes such as ferroptosis, pyroptosis, and parthanatos.
methodsWe re-analyzed the scRNA-seq data of femoral head samples publicly available in 2022. This study selected nine femoral head samples (3 each from HOA, ONFH stage 3 A, and ONFH stage 4). CD31 + EMCN + endothelial cells were classified as H_ECs. Molecular differences were assessed using Gene Ontology and KEGG analysis. Hypoxia, ferroptosis, pyroptosis, and parthanatos indices were calculated, and transcription factors were predicted using SENIC. Cell communication was analyzed with CellChat.
resultsAfter integrating the 9 samples, 14 cell types were identified: B cells, Mesenchymal stem cells, Osteoblasts, Endothelial cells, Monocytes, T cells, NK cells, Fibroblasts, Macrophages, Common myeloid progenitors, Chondrocytes, Myelocytes, Osteoclasts, and Pericytes. The number of endothelial cells and H_ECs decreased with necrosis severity. H_ECs showed higher angiogenic capacity but lower stress resistance compared to other endothelial cells. Angiogenic capacity decreased in necrotic samples, accompanied by an elevation in inflammation levels. The hypoxia index was higher, with ferroptosis increased in stage 3 A and parthanatos in stages 3 A and 4. No change was observed in pyroptosis. Cell communication analysis revealed downregulation of SLIT3-ROBO4 signaling during necrosis.
conclusionH_ECs show molecular differences compared to other endothelial cells. Ferroptosis and parthanatos contribute to the demise of H_ECs in ONFH, with pericytes and fibroblasts supporting H_EC angiogenesis.
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