Sympathetic Neurostress Drives Osteoblastic Exosomal MiR-21 Transfer to Disrupt Bone Homeostasis and Promote Osteopenia

Cheng Hu Hu, Bing Dong Sui, Jin Liu, Lei Dang, Ji Chen, Chen Xi Zheng, Songtao Shi, Na Zhao, Min Yan Dang, Xiao Ning He, Li Qiang Zhang, Ping Ping Gao, Nan Chen, Hui Juan Kuang, Kai Chen, Xiao Lin Xu, Xiao Rui Yu, Ge Zhang*, Yan Jin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Innervation and extracellular vesicle secretion co-exist in the local tissue microenvironment for message transfer, but whether they are interconnected to regulate organ homeostasis remains unknown. Sympatho-adrenergic activation is implicated in stress-induced depression and leads to bone loss, but the mechanisms and therapeutics are incompletely elucidated. Here, it is revealed that sympathetic neurostress through the β1/2-adrenergic receptor (β1/2-AR) signaling triggers the transcription response of a microRNA, miR-21, in osteoblasts, which is transferred to osteoclast progenitors via exosomes for dictating osteoclastogenesis. After confirming that miR-21 deficiency retards the β1/2-AR agonist isoproterenol (ISO)-induced osteopenia, it is shown that the pharmacological inhibition of exosome release by two clinically-relevant drugs, dimethyl amiloride and omeprazole, suppresses osteoblastic miR-21 transfer and ameliorates bone loss under both ISO and chronic variable stress (CVS)-induced depression conditions. A targeted delivery approach to specifically silence osteoblastic miR-21 is further applied, which is effective in rescuing the bone remodeling balance and ameliorating ISO- and CVS-induced osteopenias. These results decipher a previously unrecognized paradigm that neural cues drive exosomal microRNA communication to regulate organ homeostasis and help to establish feasible strategies to counteract bone loss under psychological stresses.

Original languageEnglish
Article number2100763
JournalSmall Methods
Volume6
Issue number3
DOIs
Publication statusPublished - 18 Mar 2022

Scopus Subject Areas

  • Chemistry(all)
  • Materials Science(all)

User-Defined Keywords

  • bones
  • depression
  • exosome
  • microRNA
  • sympathetic nervous system

Fingerprint

Dive into the research topics of 'Sympathetic Neurostress Drives Osteoblastic Exosomal MiR-21 Transfer to Disrupt Bone Homeostasis and Promote Osteopenia'. Together they form a unique fingerprint.

Cite this