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Yan ZQ, Wang XK, Zhou Y, Wang ZG, Wang ZX, Jin L, Yin H, Xia K, Tan YJ, Feng SK, Xie PL, Tang SY, Fang CY, Cao J, Xie H. H-type blood vessels participate in alveolar bone remodeling during murine tooth extraction healing. Oral Dis 2020; 26:998-1009. [PMID: 32144839 DOI: 10.1111/odi.13321] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 02/20/2020] [Accepted: 02/27/2020] [Indexed: 12/11/2022]
Abstract
OBJECTIVES We aimed to investigate whether skeletal-specific H-type blood vessels exist in alveolar bone and how they function in alveolar bone remodeling. MATERIALS AND METHODS H-type vessels with high expression of CD31 and Endomucin (CD31hi Emcnhi ) were immunostained in alveolar bone. Abundance and age-related changes in CD31hi Emcnhi endothelial cells (H-ECs) were detected by flow cytometry. Osteoprogenitors association with H-type vessels and bone mass were detected in tooth extraction model of alveolar bone remodeling by immunohistofluorescence and micro-CT, respectively. Transcription and expression of H-EC feature genes during in vitro Notch inhibition were measured by RT-qPCR and immunocytofluorescence. RESULTS We verified that H-type vessels existed in alveolar bone, the abundance of which was highest at infancy age, then decreased but maintained a constant level during aging. In tooth extraction model, H-ECs significantly increased with concomitant perivascular accumulation of Runx2+ osteoprogenitors and gradually augmentation of bone mass. Notch inhibition of in vitro cultured H-ECs resulted in decreased expression levels of Emcn and hes1, but not Pecam1 or Kdr genes, with decreased expression levels of H-EC numbers, accordingly. CONCLUSIONS The present study suggests that H-type vessels promote osteogenesis during alveolar bone remodeling. Notch signaling pathway regulates expression of Emcn and possibly determines fate and functions of alveolar H-ECs.
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Affiliation(s)
- Zi-Qi Yan
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China.,Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China.,Department of Stomatology, Xiangya Hospital, Central South University, Changsha, China
| | - Xiao-Kai Wang
- Department of Emergency Medicine, Xiangya Hospital, Central South University, Changsha, China
| | - Yong Zhou
- Department of Orthopaedics, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Zheng-Guang Wang
- Department of Orthopaedics, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Zhen-Xing Wang
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China.,Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China
| | - Ling Jin
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China.,Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China
| | - Hao Yin
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China.,Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China
| | - Kun Xia
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China.,Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China
| | - Yi-Juan Tan
- Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China
| | - Shi-Kai Feng
- Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China.,Department of Sports Medicine, Xiangya Hospital, Central South University, Changsha, China
| | - Ping-Li Xie
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, China
| | - Si-Yuan Tang
- Xiangya Nursing School, Central South University, Changsha, China
| | - Chang-Yun Fang
- Department of Stomatology, Xiangya Hospital, Central South University, Changsha, China
| | - Jia Cao
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China.,Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China
| | - Hui Xie
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China.,Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China.,Department of Sports Medicine, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Organ Injury, Aging and Regenerative Medicine, Changsha, China.,Hunan Key Laboratory of Bone Joint Degeneration and Injury, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
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