Journal of Capital Medical University ›› 2022, Vol. 43 ›› Issue (3): 440-445.doi: 10.3969/j.issn.1006-7795.2022.03.018

• Basic Research • Previous Articles     Next Articles

Chirality controls mitochondrial function of mesenchymal stem cells in three-dimensional microenvironment

He Ying1 , Feng Chuanliang2, Liu Jinying3, Zheng Huiming1, Jiang Shengjie1*   

  1. 1. Department of Geriatric Dentistry,Peking University School and Hospital of Stomatology, Beijing 100034, China;
    2. State Key Laboratory of Metal Matrix Composites School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai 200030, China;
    3. Key Laboratory for Special Functional Materials of Ministry of Education School of Materials Science and Engineering, Henan University, Zhengzhou 450001, China
  • Received:2022-01-27 Online:2022-06-21 Published:2022-06-01
  • Contact: *E-mail:277062365@qq.com
  • Supported by:
    National Natural Science Foundation of China(51833006, 82101072, 52003072).

Abstract: Objective To analyze the chirality mediated mitochondrial function of stem cells and regulation of osteogenic differentiation. Methods Mesenchymal stem cells (MSCs) were cultured in vitro to monitor the mitochondrial membrane potential function of stem cells in vitro. In vivo, the expression of CXCL2 factor was observed in the early defect area after hydrogel implantation, and the difference between the related mitochondria and metabolic signaling pathways was analyzed by high throughput analysis in vitro. Results The proportion of mitotracker deep red immunoflourence staining decreased in the righ-handed group, which indicated that the mitochondrial membrane potential of stem cells was damaged in the right-handed group. In the rat cranial defects model, the expression of CXCL2 in the left-handed matrix repair area was up-regulated after early implantation. Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis found that mitochondrial related genes and signaling pathways were significantly differentially between different chiral groups. A global microarray gene analysis showed that the expression of mitochondrion degradation related genes up-regulated in right-handed group. The results showed that left-handed matrix could up regulate the mitochondrial NADH dehydrogenase expression, while the mitochondrial function of mesenchymal stem cells in right-handed matrix was significantly damaged. Conclusion The chirallity of biological implant materials was able to regulate the function of stem cell mitochondria.

Key words: chirality, mitochondrion, mesenchymal stem cells

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