Data for: Osteocytes regulate senescence of bone and bone marrow

  • Peng Ding (Creator)
  • Chuan Gao (Creator)
  • Youshui Gao (Shanghai Jiao Tong University) (Creator)
  • Delin Liu (The University of Western Australia) (Creator)
  • Hao Li (Shanghai Jiao Tong University) (Creator)
  • Jun Xu (Creator)
  • Xiaoyi Chen (Creator)
  • Yigang Huang (Shanghai Jiao Tong University) (Creator)
  • Changqing Zhang (Creator)
  • Minghao Zheng (Creator)
  • Junjie Gao (Creator)

Dataset

Description

The skeletal system contains a series of sophisticated cellular lineages arisen from the mesenchymal stem cells (MSCs) and hematopoietic stem cells (HSCs), that determine the homeostasis of bone and bone marrow. Here we reasoned that osteocyte may exert a function in regulation of these lineage cell specifications and tissue homeostasis. Using a mouse model of conditional deletion of osteocytes by the expression of diphtheria toxin subunit 𝛼 (DTA) in dentin matrix protein 1 (DMP1) positive osteocytes, we demonstrated that partial ablation of DMP1 positive osteocytes caused severe sarcopenia, osteoporosis and degenerative kyphosis, leading to shorter lifespan in these animals. Osteocytes' reduction altered mesenchymal lineage commitment resulting in impairment of osteogenesis and induction of osteoclastogensis. Single cell RNA sequencing further revealed that hematopoietic lineage was mobilized towards myeloid lineage differentiation with expanded myeloid progenitors, neutrophils and monocytes, while the lymphopoiesis was impaired with reduced B cells in the osteocyte ablation mice. The acquisition of a senescence-associated secretory phenotype (SASP) in both osteoprogenic and myeloid lineage cells was the underlying cause. Together, we showed that osteocytes play critical roles in regulation of lineage cell specifications in bone and bone marrow through mediation of senescence.
Date made available14 Nov 2022
PublisherDRYAD
  • Osteocytes regulate senescence of bone and bone marrow

    Ding, P., Gao, C., Gao, Y., Liu, D., Li, H., Xu, J., Chen, X., Huang, Y., Zhang, C., Zheng, M. & Gao, J., 28 Oct 2022, In: eLife. 11, 25 p., e81480.

    Research output: Contribution to journalArticlepeer-review

    Open Access
    46 Citations (Scopus)

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