Exploring the Interplay Between Senescent Osteocytes and Bone Remodeling in Young Rodents

This study identifies senescent osteocytes in the femur and tibia of young rodents and explores their role in bone remodeling. The proximity of osteoclasts to senescent osteocytes was observed, which is a new finding. Cultured osteocytes, sorted using a podoplanin antibody in FACS, exhibited osteocy...

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Main Authors: Insun Song, Pil-Jong Kim, Yong Jun Choi, Yoon-Sok Chung, Soonchul Lee, Jeong-Hwa Baek, Kyung Mi Woo
Format: Article
Language:English
Published: Wiley 2024-01-01
Series:Journal of Aging Research
Online Access:http://dx.doi.org/10.1155/2024/4213141
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author Insun Song
Pil-Jong Kim
Yong Jun Choi
Yoon-Sok Chung
Soonchul Lee
Jeong-Hwa Baek
Kyung Mi Woo
author_facet Insun Song
Pil-Jong Kim
Yong Jun Choi
Yoon-Sok Chung
Soonchul Lee
Jeong-Hwa Baek
Kyung Mi Woo
author_sort Insun Song
collection DOAJ
description This study identifies senescent osteocytes in the femur and tibia of young rodents and explores their role in bone remodeling. The proximity of osteoclasts to senescent osteocytes was observed, which is a new finding. Cultured osteocytes, sorted using a podoplanin antibody in FACS, exhibited osteocytic characteristics and increased senescence-related genes. Senescent osteocytes secreted cytokines associated with senescence, remodeling, and inflammation. Notably, IGF1 and MMP2 were elevated in podoplanin-positive (pdpn+) osteocytes. Migration assays demonstrated significant osteoclast precursor migration towards senescent osteocytes, further confirmed by co-culture experiments leading to osteoclast differentiation. These findings suggest that senescent osteocytes have a pivotal role in initiating bone resorption, with recruitment of osteoclast precursors during early bone remodeling stages. In conclusion, our research enhances our understanding of complicated bone remodeling mechanisms and bone homeostasis.
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publishDate 2024-01-01
publisher Wiley
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series Journal of Aging Research
spelling doaj-art-0896cf565c9a4663898fc0b85ed66cc72024-11-24T00:00:04ZengWileyJournal of Aging Research2090-22122024-01-01202410.1155/2024/4213141Exploring the Interplay Between Senescent Osteocytes and Bone Remodeling in Young RodentsInsun Song0Pil-Jong Kim1Yong Jun Choi2Yoon-Sok Chung3Soonchul Lee4Jeong-Hwa Baek5Kyung Mi Woo6Dental Research InstituteSchool of Dentistry and Dental Research InstituteDepartment of Endocrinology and MetabolismDepartment of Endocrinology and MetabolismDepartment of Orthopaedic SurgeryDental Research InstituteDental Research InstituteThis study identifies senescent osteocytes in the femur and tibia of young rodents and explores their role in bone remodeling. The proximity of osteoclasts to senescent osteocytes was observed, which is a new finding. Cultured osteocytes, sorted using a podoplanin antibody in FACS, exhibited osteocytic characteristics and increased senescence-related genes. Senescent osteocytes secreted cytokines associated with senescence, remodeling, and inflammation. Notably, IGF1 and MMP2 were elevated in podoplanin-positive (pdpn+) osteocytes. Migration assays demonstrated significant osteoclast precursor migration towards senescent osteocytes, further confirmed by co-culture experiments leading to osteoclast differentiation. These findings suggest that senescent osteocytes have a pivotal role in initiating bone resorption, with recruitment of osteoclast precursors during early bone remodeling stages. In conclusion, our research enhances our understanding of complicated bone remodeling mechanisms and bone homeostasis.http://dx.doi.org/10.1155/2024/4213141
spellingShingle Insun Song
Pil-Jong Kim
Yong Jun Choi
Yoon-Sok Chung
Soonchul Lee
Jeong-Hwa Baek
Kyung Mi Woo
Exploring the Interplay Between Senescent Osteocytes and Bone Remodeling in Young Rodents
Journal of Aging Research
title Exploring the Interplay Between Senescent Osteocytes and Bone Remodeling in Young Rodents
title_full Exploring the Interplay Between Senescent Osteocytes and Bone Remodeling in Young Rodents
title_fullStr Exploring the Interplay Between Senescent Osteocytes and Bone Remodeling in Young Rodents
title_full_unstemmed Exploring the Interplay Between Senescent Osteocytes and Bone Remodeling in Young Rodents
title_short Exploring the Interplay Between Senescent Osteocytes and Bone Remodeling in Young Rodents
title_sort exploring the interplay between senescent osteocytes and bone remodeling in young rodents
url http://dx.doi.org/10.1155/2024/4213141
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