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Erschienen in: Journal of Bone and Mineral Metabolism 2/2023

01.03.2023 | Original Article

Periostin splice variants affect craniofacial growth by influencing chondrocyte hypertrophy

verfasst von: Seiko Ishihara, Risa Usumi-Fujita, Yuki Kasahara, Shuji Oishi, Kana Shibata, Yasuhiro Shimizu, Yuji Ishida, Sawa Kaneko, Makoto Sugiura-Nakazato, Makoto J. Tabata, Jun Hosomichi, Yoshiaki Taniyama, Takashi Ono

Erschienen in: Journal of Bone and Mineral Metabolism | Ausgabe 2/2023

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Abstract

Introduction

Periostin, an extracellular matrix protein, plays an important role in osteogenesis and is also known to activate several signals that contribute to chondrogenesis. The absence of periostin in periostin knockout mice leads to several disorders such as craniosynostosis and periostitis. There are several splice variants with different roles in heart disease and myocardial infarction. However, little is known about each variant’s role in chondrogenesis, followed by bone formation. Therefore, the aim of this study is to investigate the role of several variants in chondrogenesis differentiation and bone formation in the craniofacial region. Periostin splice variants included a full-length variant (Control), a variant lacking exon 17 (ΔEx17), a variant lacking exon 21 (ΔEx21), and another variant lacking both exon 17 and 21 ***(ΔEx17&21).

Materials and Methods

We used C56BL6/N mice (n = 6) for the wild type (Control)*** and the three variant type mice (n = 6 each) to identify the effect of each variant morphologically and histologically. Micro-computed tomography demonstrated a smaller craniofacial skeleton in ΔEx17s, ΔEx21s, and ΔEx17&21s compared to Controls, especially the mandibular bone. We, thus, focused on the mandibular condyle.

Results

The most distinctive histological observation was that each defected mouse appeared to have more hypertrophic chondrocytes than Controls. Real-time PCR demonstrated the differences among the group. Moreover, the lack of exon 17 or exon 21 in periostin leads to inadequate chondrocyte differentiation and presents in a diminutive craniofacial skeleton.

Discussion

Therefore, these findings suggested that each variant has a significant role in chondrocyte hypertrophy, leading to suppression of bone formation.
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Metadaten
Titel
Periostin splice variants affect craniofacial growth by influencing chondrocyte hypertrophy
verfasst von
Seiko Ishihara
Risa Usumi-Fujita
Yuki Kasahara
Shuji Oishi
Kana Shibata
Yasuhiro Shimizu
Yuji Ishida
Sawa Kaneko
Makoto Sugiura-Nakazato
Makoto J. Tabata
Jun Hosomichi
Yoshiaki Taniyama
Takashi Ono
Publikationsdatum
01.03.2023
Verlag
Springer Nature Singapore
Erschienen in
Journal of Bone and Mineral Metabolism / Ausgabe 2/2023
Print ISSN: 0914-8779
Elektronische ISSN: 1435-5604
DOI
https://doi.org/10.1007/s00774-023-01409-y

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