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Hu Y, Li X, Zhang Q, Gu Z, Luo Y, Guo J, Wang X, Jing Y, Chen X, Su J. Exosome-guided bone targeted delivery of Antagomir-188 as an anabolic therapy for bone loss. Bioact Mater 2021; 6:2905-2913. [PMID: 33718671 PMCID: PMC7917458 DOI: 10.1016/j.bioactmat.2021.02.014] [Citation(s) in RCA: 98] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 02/09/2021] [Accepted: 02/13/2021] [Indexed: 12/14/2022] Open
Abstract
The differentiation shift from osteogenesis to adipogenesis of bone marrow mesenchymal stem cells (BMSCs) characterizes many pathological bone loss conditions. Stromal cell-derived factor-1 (SDF1) is highly enriched in the bone marrow for C-X-C motif chemokine receptor 4 (CXCR4)-positive hematopoietic stem cell (HSC) homing and tumor bone metastasis. In this study, we displayed CXCR4 on the surface of exosomes derived from genetically engineered NIH-3T3 cells. CXCR4+ exosomes selectively accumulated in the bone marrow. Then, we fused CXCR4+ exosomes with liposomes carrying antagomir-188 to produce hybrid nanoparticles (NPs). The hybrid NPs specifically gathered in the bone marrow and released antagomir-188, which promoted osteogenesis and inhibited adipogenesis of BMSCs and thereby reversed age-related trabecular bone loss and decreased cortical bone porosity in mice. Taken together, this study presents a novel way to obtain bone-targeted exosomes via surface display of CXCR4 and a promising anabolic therapeutic approach for age-related bone loss. Surface display of CXCR4 grants exosomes bone targeting properties. Exosome-liposome hybrid nanoparticles carrying nucleic acid target bone. Antagomir-188 loaded hybrid nanoparticles regulate MSC differentiation in aged mice.
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Affiliation(s)
- Yan Hu
- Department of Trauma Orthopedics, Changhai Hospital, Naval Medical University, Shanghai, 200433, China
| | - Xiaoqun Li
- Department of Trauma Orthopedics, Changhai Hospital, Naval Medical University, Shanghai, 200433, China
| | - Qin Zhang
- Institute of Translational Medicine, Shanghai University, Shanghai, 200444, China
| | - Zhengrong Gu
- Department of Orthopedics, Shanghai Baoshan Luodian Hospital, Shanghai, 201908, China
| | - Ying Luo
- Centre Laboratory, Changhai Hospital, Naval Medical University, Shanghai, 200433, China
| | - Jiawei Guo
- Department of Trauma Orthopedics, Changhai Hospital, Naval Medical University, Shanghai, 200433, China
| | - Xiuhui Wang
- Institute of Translational Medicine, Shanghai University, Shanghai, 200444, China
| | - Yingying Jing
- Institute of Translational Medicine, Shanghai University, Shanghai, 200444, China
| | - Xiao Chen
- Department of Trauma Orthopedics, Changhai Hospital, Naval Medical University, Shanghai, 200433, China.,Department of Chemistry, Fudan University, Shanghai, 200433, China
| | - Jiacan Su
- Department of Trauma Orthopedics, Changhai Hospital, Naval Medical University, Shanghai, 200433, China
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Schwebach CL, Kudryashova E, Kudryashov DS. Plastin 3 in X-Linked Osteoporosis: Imbalance of Ca 2+-Dependent Regulation Is Equivalent to Protein Loss. Front Cell Dev Biol 2021; 8:635783. [PMID: 33553175 PMCID: PMC7859272 DOI: 10.3389/fcell.2020.635783] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 12/28/2020] [Indexed: 12/14/2022] Open
Abstract
Osteogenesis imperfecta is a genetic disorder disrupting bone development and remodeling. The primary causes of osteogenesis imperfecta are pathogenic variants of collagen and collagen processing genes. However, recently variants of the actin bundling protein plastin 3 have been identified as another source of osteogenesis imperfecta. Plastin 3 is a highly conserved protein involved in several important cellular structures and processes and is controlled by intracellular Ca2+ which potently inhibits its actin-bundling activity. The precise mechanisms by which plastin 3 causes osteogenesis imperfecta remain unclear, but recent advances have contributed to our understanding of bone development and the actin cytoskeleton. Here, we review the link between plastin 3 and osteogenesis imperfecta highlighting in vitro studies and emphasizing the importance of Ca2+ regulation in the localization and functionality of plastin 3.
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Affiliation(s)
- Christopher L Schwebach
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, United States
| | - Elena Kudryashova
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, United States
| | - Dmitri S Kudryashov
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, United States
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