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Impairment of rigidity sensing caused by mutant TP53 gain of function in osteosarcoma. 骨肉瘤中突变型TP53功能获得引起的刚性感知损伤。
IF 12.7 1区 医学
Bone Research Pub Date : 2023-05-29 DOI: 10.1038/s41413-023-00265-w
Ming Luo, Mingyang Huang, Ningning Yang, Yufan Zhu, Peng Huang, Zhujun Xu, Wengang Wang, Lin Cai
{"title":"Impairment of rigidity sensing caused by mutant TP53 gain of function in osteosarcoma.","authors":"Ming Luo,&nbsp;Mingyang Huang,&nbsp;Ningning Yang,&nbsp;Yufan Zhu,&nbsp;Peng Huang,&nbsp;Zhujun Xu,&nbsp;Wengang Wang,&nbsp;Lin Cai","doi":"10.1038/s41413-023-00265-w","DOIUrl":"https://doi.org/10.1038/s41413-023-00265-w","url":null,"abstract":"<p><p>Osteosarcoma (OS) is the most common primary malignant pediatric bone tumor and is characterized by high heterogeneity. Studies have revealed a wide range of phenotypic differences among OS cell lines in terms of their in vivo tumorigenicity and in vitro colony-forming abilities. However, the underlying molecular mechanism of these discrepancies remains unclear. The potential role of mechanotransduction in tumorigenicity is of particular interest. To this end, we tested the tumorigenicity and anoikis resistance of OS cell lines both in vitro and in vivo. We utilized a sphere culture model, a soft agar assay, and soft and rigid hydrogel surface culture models to investigate the function of rigidity sensing in the tumorigenicity of OS cells. Additionally, we quantified the expression of sensor proteins, including four kinases and seven cytoskeletal proteins, in OS cell lines. The upstream core transcription factors of rigidity-sensing proteins were further investigated. We detected anoikis resistance in transformed OS cells. The mechanosensing function of transformed OS cells was also impaired, with general downregulation of rigidity-sensing components. We identified toggling between normal and transformed growth based on the expression pattern of rigidity-sensing proteins in OS cells. We further uncovered a novel TP53 mutation (R156P) in transformed OS cells, which acquired gain of function to inhibit rigidity sensing, thus sustaining transformed growth. Our findings suggest a fundamental role of rigidity-sensing components in OS tumorigenicity as mechanotransduction elements through which cells can sense their physical microenvironment. In addition, the gain of function of mutant TP53 appears to serve as an executor for such malignant programs.</p>","PeriodicalId":9134,"journal":{"name":"Bone Research","volume":null,"pages":null},"PeriodicalIF":12.7,"publicationDate":"2023-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10225464/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9915915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
FAR591 promotes the pathogenesis and progression of SONFH by regulating Fos expression to mediate the apoptosis of bone microvascular endothelial cells. FAR591 通过调节 Fos 的表达来介导骨微血管内皮细胞的凋亡,从而促进 SONFH 的发病和进展。
IF 12.7 1区 医学
Bone Research Pub Date : 2023-05-22 DOI: 10.1038/s41413-023-00259-8
Fei Zhang, Lei Wei, Lei Wang, Tao Wang, Zhihong Xie, Hong Luo, Fanchao Li, Jian Zhang, Wentao Dong, Gang Liu, Qinglin Kang, Xuesong Zhu, Wuxun Peng
{"title":"FAR591 promotes the pathogenesis and progression of SONFH by regulating Fos expression to mediate the apoptosis of bone microvascular endothelial cells.","authors":"Fei Zhang, Lei Wei, Lei Wang, Tao Wang, Zhihong Xie, Hong Luo, Fanchao Li, Jian Zhang, Wentao Dong, Gang Liu, Qinglin Kang, Xuesong Zhu, Wuxun Peng","doi":"10.1038/s41413-023-00259-8","DOIUrl":"10.1038/s41413-023-00259-8","url":null,"abstract":"<p><p>The specific pathogenesis of steroid-induced osteonecrosis of the femoral head (SONFH) is still not fully understood, and there is currently no effective early cure. Understanding the role and mechanism of long noncoding RNAs (lncRNAs) in the pathogenesis of SONFH will help reveal the pathogenesis of SONFH and provide new targets for its early prevention and treatment. In this study, we first confirmed that glucocorticoid (GC)-induced apoptosis of bone microvascular endothelial cells (BMECs) is a pre-event in the pathogenesis and progression of SONFH. Then, we identified a new lncRNA in BMECs via lncRNA/mRNA microarray, termed Fos-associated lincRNA ENSRNOT00000088059.1 (FAR591). FAR591 is highly expressed during GC-induced BMEC apoptosis and femoral head necrosis. Knockout of FAR591 effectively blocked the GC-induced apoptosis of BMECs, which then alleviated the damage of GCs to the femoral head microcirculation and inhibited the pathogenesis and progression of SONFH. In contrast, overexpression of FAR591 significantly promoted the GC-induced apoptosis of BMECs, which then aggravated the damage of GCs to the femoral head microcirculation and promoted the pathogenesis and progression of SONFH. Mechanistically, GCs activate the glucocorticoid receptor, which translocates to the nucleus and directly acts on the FAR591 gene promoter to induce FAR591 gene overexpression. Subsequently, FAR591 binds to the Fos gene promoter (-245∼-51) to form a stable RNA:DNA triplet structure and then recruits TATA-box binding protein associated factor 15 and RNA polymerase II to promote Fos expression through transcriptional activation. Fos activates the mitochondrial apoptotic pathway by regulating the expression of Bcl-2 interacting mediator of cell death (Bim) and P53 upregulated modulator of apoptosis (Puma) to mediate GC-induced apoptosis of BMECs, which leads to femoral head microcirculation dysfunction and femoral head necrosis. In conclusion, these results confirm the mechanistic link between lncRNAs and the pathogenesis of SONFH, which helps reveal the pathogenesis of SONFH and provides a new target for the early prevention and treatment of SONFH.</p>","PeriodicalId":9134,"journal":{"name":"Bone Research","volume":null,"pages":null},"PeriodicalIF":12.7,"publicationDate":"2023-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10203311/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9886950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
New insights into inflammatory osteoclast precursors as therapeutic targets for rheumatoid arthritis and periodontitis. 炎性破骨细胞前体作为类风湿关节炎和牙周炎治疗靶点的新见解。
IF 12.7 1区 医学
Bone Research Pub Date : 2023-05-22 DOI: 10.1038/s41413-023-00257-w
Emilie Hascoët, Frédéric Blanchard, Claudine Blin-Wakkach, Jérôme Guicheux, Philippe Lesclous, Alexandra Cloitre
{"title":"New insights into inflammatory osteoclast precursors as therapeutic targets for rheumatoid arthritis and periodontitis.","authors":"Emilie Hascoët,&nbsp;Frédéric Blanchard,&nbsp;Claudine Blin-Wakkach,&nbsp;Jérôme Guicheux,&nbsp;Philippe Lesclous,&nbsp;Alexandra Cloitre","doi":"10.1038/s41413-023-00257-w","DOIUrl":"https://doi.org/10.1038/s41413-023-00257-w","url":null,"abstract":"<p><p>Rheumatoid arthritis (RA) and periodontitis are chronic inflammatory diseases leading to increased bone resorption. Preventing this inflammatory bone resorption is a major health challenge. Both diseases share immunopathogenic similarities and a common inflammatory environment. The autoimmune response or periodontal infection stimulates certain immune actors, leading in both cases to chronic inflammation that perpetuates bone resorption. Moreover, RA and periodontitis have a strong epidemiological association that could be explained by periodontal microbial dysbiosis. This dysbiosis is believed to be involved in the initiation of RA via three mechanisms. (i) The dissemination of periodontal pathogens triggers systemic inflammation. (ii) Periodontal pathogens can induce the generation of citrullinated neoepitopes, leading to the generation of anti-citrullinated peptide autoantibodies. (iii) Intracellular danger-associated molecular patterns accelerate local and systemic inflammation. Therefore, periodontal dysbiosis could promote or sustain bone resorption in distant inflamed joints. Interestingly, in inflammatory conditions, the existence of osteoclasts distinct from \"classical osteoclasts\" has recently been reported. They have proinflammatory origins and functions. Several populations of osteoclast precursors have been described in RA, such as classical monocytes, a dendritic cell subtype, and arthritis-associated osteoclastogenic macrophages. The aim of this review is to synthesize knowledge on osteoclasts and their precursors in inflammatory conditions, especially in RA and periodontitis. Special attention will be given to recent data related to RA that could be of potential value in periodontitis due to the immunopathogenic similarities between the two diseases. Improving our understanding of these pathogenic mechanisms should lead to the identification of new therapeutic targets involved in the pathological inflammatory bone resorption associated with these diseases.</p>","PeriodicalId":9134,"journal":{"name":"Bone Research","volume":null,"pages":null},"PeriodicalIF":12.7,"publicationDate":"2023-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10203317/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9870478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Fragile X Messenger Ribonucleoprotein 1 (FMR1), a novel inhibitor of osteoblast/osteocyte differentiation, regulates bone formation, mass, and strength in young and aged male and female mice. 脆性X信使核糖核蛋白1 (FMR1)是一种新的成骨细胞/骨细胞分化抑制剂,可调节年轻和老年雄性和雌性小鼠的骨形成、质量和强度。
IF 12.7 1区 医学
Bone Research Pub Date : 2023-05-17 DOI: 10.1038/s41413-023-00256-x
Padmini Deosthale, Julián Balanta-Melo, Amy Creecy, Chongshan Liu, Alejandro Marcial, Laura Morales, Julita Cridlin, Sylvia Robertson, Chiebuka Okpara, David J Sanchez, Mahdi Ayoubi, Joaquín N Lugo, Christopher J Hernandez, Joseph M Wallace, Lilian I Plotkin
{"title":"Fragile X Messenger Ribonucleoprotein 1 (FMR1), a novel inhibitor of osteoblast/osteocyte differentiation, regulates bone formation, mass, and strength in young and aged male and female mice.","authors":"Padmini Deosthale,&nbsp;Julián Balanta-Melo,&nbsp;Amy Creecy,&nbsp;Chongshan Liu,&nbsp;Alejandro Marcial,&nbsp;Laura Morales,&nbsp;Julita Cridlin,&nbsp;Sylvia Robertson,&nbsp;Chiebuka Okpara,&nbsp;David J Sanchez,&nbsp;Mahdi Ayoubi,&nbsp;Joaquín N Lugo,&nbsp;Christopher J Hernandez,&nbsp;Joseph M Wallace,&nbsp;Lilian I Plotkin","doi":"10.1038/s41413-023-00256-x","DOIUrl":"https://doi.org/10.1038/s41413-023-00256-x","url":null,"abstract":"<p><p>Fragile X Messenger Ribonucleoprotein 1 (FMR1) gene mutations lead to fragile X syndrome, cognitive disorders, and, in some individuals, scoliosis and craniofacial abnormalities. Four-month-old (mo) male mice with deletion of the FMR1 gene exhibit a mild increase in cortical and cancellous femoral bone mass. However, consequences of absence of FMR1 in bone of young/aged male/female mice and the cellular basis of the skeletal phenotype remain unknown. We found that absence of FMR1 results in improved bone properties with higher bone mineral density in both sexes and in 2- and 9-mo mice. The cancellous bone mass is higher only in females, whereas, cortical bone mass is higher in 2- and 9-mo males, but higher in 2- and lower in 9-mo female FMR1-knockout mice. Furthermore, male bones show higher biomechanical properties at 2mo, and females at both ages. Absence of FMR1 increases osteoblast/mineralization/bone formation and osteocyte dendricity/gene expression in vivo/ex vivo/in vitro, without affecting osteoclasts in vivo/ex vivo. Thus, FMR1 is a novel osteoblast/osteocyte differentiation inhibitor, and its absence leads to age-, site- and sex-dependent higher bone mass/strength.</p>","PeriodicalId":9134,"journal":{"name":"Bone Research","volume":null,"pages":null},"PeriodicalIF":12.7,"publicationDate":"2023-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10188597/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9485520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Neutralization of excessive levels of active TGF-β1 reduces MSC recruitment and differentiation to mitigate peritendinous adhesion. 中和过量的活性TGF-β1可减少MSC的募集和分化,从而减轻肌腱周粘连。
IF 12.7 1区 医学
Bone Research Pub Date : 2023-05-08 DOI: 10.1038/s41413-023-00252-1
YuSheng Li, Xiao Wang, Bo Hu, Qi Sun, Mei Wan, Andrew Carr, Shen Liu, Xu Cao
{"title":"Neutralization of excessive levels of active TGF-β1 reduces MSC recruitment and differentiation to mitigate peritendinous adhesion.","authors":"YuSheng Li,&nbsp;Xiao Wang,&nbsp;Bo Hu,&nbsp;Qi Sun,&nbsp;Mei Wan,&nbsp;Andrew Carr,&nbsp;Shen Liu,&nbsp;Xu Cao","doi":"10.1038/s41413-023-00252-1","DOIUrl":"https://doi.org/10.1038/s41413-023-00252-1","url":null,"abstract":"<p><p>Peritendinous adhesion formation (PAF) can substantially limit the range of motion of digits. However, the origin of myofibroblasts in PAF tissues is still unclear. In this study, we found that the concentration of active TGF-β1 and the numbers of macrophages, mesenchymal stromal cells (MSCs), and myofibroblasts in human and mouse adhesion tissues were increased. Furthermore, knockout of TGF-β1 in macrophages or TGF-β1R2 in MSCs inhibited PAF by reducing MSC and myofibroblast infiltration and collagen I and III deposition, respectively. Moreover, we found that MSCs differentiated into myofibroblasts to form adhesion tissues. Systemic injection of the TGF-β-neutralizing antibody 1D11 during the granulation formation stage of PAF significantly reduced the infiltration of MSCs and myofibroblasts and, subsequently, PAF. These results suggest that macrophage-derived TGF-β1 recruits MSCs to form myofibroblasts in peritendinous adhesions. An improved understanding of PAF mechanisms could help identify a potential therapeutic strategy.</p>","PeriodicalId":9134,"journal":{"name":"Bone Research","volume":null,"pages":null},"PeriodicalIF":12.7,"publicationDate":"2023-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10167238/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9442410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Author Correction: Reversal of the diabetic bone signature with anabolic therapies in mice. 作者更正:在小鼠中使用合成代谢疗法逆转糖尿病骨特征。
IF 12.7 1区 医学
Bone Research Pub Date : 2023-05-06 DOI: 10.1038/s41413-023-00266-9
Silvia Marino, Nisreen Akel, Shenyang Li, Meloney Cregor, Meghan Jones, Betiana Perez, Gaston Troncoso, Jomeeka Meeks, Scott Stuart, Amy Y Sato, Intawat Nookaew, Teresita Bellido
{"title":"Author Correction: Reversal of the diabetic bone signature with anabolic therapies in mice.","authors":"Silvia Marino,&nbsp;Nisreen Akel,&nbsp;Shenyang Li,&nbsp;Meloney Cregor,&nbsp;Meghan Jones,&nbsp;Betiana Perez,&nbsp;Gaston Troncoso,&nbsp;Jomeeka Meeks,&nbsp;Scott Stuart,&nbsp;Amy Y Sato,&nbsp;Intawat Nookaew,&nbsp;Teresita Bellido","doi":"10.1038/s41413-023-00266-9","DOIUrl":"https://doi.org/10.1038/s41413-023-00266-9","url":null,"abstract":"","PeriodicalId":9134,"journal":{"name":"Bone Research","volume":null,"pages":null},"PeriodicalIF":12.7,"publicationDate":"2023-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10163036/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9426342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mobilization of monocytic myeloid-derived suppressor cells is regulated by PTH1R activation in bone marrow stromal cells. 骨髓基质细胞中的PTH1R激活可调节单核髓源性抑制细胞的动员。
IF 12.7 1区 医学
Bone Research Pub Date : 2023-04-21 DOI: 10.1038/s41413-023-00255-y
Eun Jung Lee, Kyoung Jin Lee, Seungpil Jung, Kyong Hwa Park, Serk In Park
{"title":"Mobilization of monocytic myeloid-derived suppressor cells is regulated by PTH1R activation in bone marrow stromal cells.","authors":"Eun Jung Lee,&nbsp;Kyoung Jin Lee,&nbsp;Seungpil Jung,&nbsp;Kyong Hwa Park,&nbsp;Serk In Park","doi":"10.1038/s41413-023-00255-y","DOIUrl":"https://doi.org/10.1038/s41413-023-00255-y","url":null,"abstract":"<p><p>Myeloid-derived suppressor cells (MDSCs) are bone marrow (BM)-derived immunosuppressive cells in the tumor microenvironment, but the mechanism of MDSC mobilization from the BM remains unclear. We investigated how BM stromal cell activation by PTH1R contributes to MDSC mobilization. PTH1R activation by parathyroid hormone (PTH) or PTH-related peptide (PTHrP), a tumor-derived counterpart, mobilized monocytic (M-) MDSCs from murine BM without increasing immunosuppressive activity. In vitro cell-binding assays demonstrated that α4β1 integrin and vascular cell adhesion molecule (VCAM)-1, expressed on M-MDSCs and osteoblasts, respectively, are key to M-MDSC binding to osteoblasts. Upon PTH1R activation, osteoblasts express VEGF-A and IL6, leading to Src family kinase phosphorylation in M-MDSCs. Src inhibitors suppressed PTHrP-induced MDSC mobilization, and Src activation in M-MDSCs upregulated two proteases, ADAM-17 and MMP7, leading to VCAM1 shedding and subsequent disruption of M-MDSC tethering to osteoblasts. Collectively, our data provide the molecular mechanism of M-MDSC mobilization in the bones of tumor hosts.</p>","PeriodicalId":9134,"journal":{"name":"Bone Research","volume":null,"pages":null},"PeriodicalIF":12.7,"publicationDate":"2023-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10121701/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9791059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Bone serves as a transfer station for secondary dissemination of breast cancer. 骨是乳腺癌继发性传播的中转站。
IF 12.7 1区 医学
Bone Research Pub Date : 2023-04-21 DOI: 10.1038/s41413-023-00260-1
Yufan Huang, Hongli Wang, Xiaomin Yue, Xiaoqing Li
{"title":"Bone serves as a transfer station for secondary dissemination of breast cancer.","authors":"Yufan Huang,&nbsp;Hongli Wang,&nbsp;Xiaomin Yue,&nbsp;Xiaoqing Li","doi":"10.1038/s41413-023-00260-1","DOIUrl":"https://doi.org/10.1038/s41413-023-00260-1","url":null,"abstract":"<p><p>Metastasis is responsible for the majority of deaths among breast cancer patients. Although parallel polyclonal seeding has been shown to contribute to organ-specific metastasis, in the past decade, horizontal cross-metastatic seeding (metastasis-to-metastasis spreading) has also been demonstrated as a pattern of distant metastasis to multiple sites. Bone, as the most frequent first destination of breast cancer metastasis, has been demonstrated to facilitate the secondary dissemination of breast cancer cells. In this review, we summarize the clinical and experimental evidence that bone is a transfer station for the secondary dissemination of breast cancer. We also discuss the regulatory mechanisms of the bone microenvironment in secondary seeding of breast cancer, focusing on stemness regulation, quiescence-proliferation equilibrium regulation, epigenetic reprogramming and immune escape of cancer cells. Furthermore, we highlight future research perspectives and strategies for preventing secondary dissemination from bone.</p>","PeriodicalId":9134,"journal":{"name":"Bone Research","volume":null,"pages":null},"PeriodicalIF":12.7,"publicationDate":"2023-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10121690/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9775289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Nutrient-regulated dynamics of chondroprogenitors in the postnatal murine growth plate. 出生后小鼠生长板中软骨细胞的营养调控动态。
IF 14.3 1区 医学
Bone Research Pub Date : 2023-04-21 DOI: 10.1038/s41413-023-00258-9
Takeshi Oichi, Joe Kodama, Kimberly Wilson, Hongying Tian, Yuka Imamura Kawasawa, Yu Usami, Yasushi Oshima, Taku Saito, Sakae Tanaka, Masahiro Iwamoto, Satoru Otsuru, Motomi Enomoto-Iwamoto
{"title":"Nutrient-regulated dynamics of chondroprogenitors in the postnatal murine growth plate.","authors":"Takeshi Oichi, Joe Kodama, Kimberly Wilson, Hongying Tian, Yuka Imamura Kawasawa, Yu Usami, Yasushi Oshima, Taku Saito, Sakae Tanaka, Masahiro Iwamoto, Satoru Otsuru, Motomi Enomoto-Iwamoto","doi":"10.1038/s41413-023-00258-9","DOIUrl":"10.1038/s41413-023-00258-9","url":null,"abstract":"<p><p>Longitudinal bone growth relies on endochondral ossification in the cartilaginous growth plate, where chondrocytes accumulate and synthesize the matrix scaffold that is replaced by bone. The chondroprogenitors in the resting zone maintain the continuous turnover of chondrocytes in the growth plate. Malnutrition is a leading cause of growth retardation in children; however, after recovery from nutrient deprivation, bone growth is accelerated beyond the normal rate, a phenomenon termed catch-up growth. Although nutritional status is a known regulator of long bone growth, it is largely unknown whether and how chondroprogenitor cells respond to deviations in nutrient availability. Here, using fate-mapping analysis in Axin2Cre<sup>ERT2</sup> mice, we showed that dietary restriction increased the number of Axin2<sup>+</sup> chondroprogenitors in the resting zone and simultaneously inhibited their differentiation. Once nutrient deficiency was resolved, the accumulated chondroprogenitor cells immediately restarted differentiation and formed chondrocyte columns, contributing to accelerated growth. Furthermore, we showed that nutrient deprivation reduced the level of phosphorylated Akt in the resting zone and that exogenous IGF-1 restored the phosphorylated Akt level and stimulated differentiation of the pooled chondroprogenitors, decreasing their numbers. Our study of Axin2Cre<sup>ERT2</sup> revealed that nutrient availability regulates the balance between accumulation and differentiation of chondroprogenitors in the growth plate and further demonstrated that IGF-1 partially mediates this regulation by promoting the committed differentiation of chondroprogenitor cells.</p>","PeriodicalId":9134,"journal":{"name":"Bone Research","volume":null,"pages":null},"PeriodicalIF":14.3,"publicationDate":"2023-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10119120/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9773911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reversal of the diabetic bone signature with anabolic therapies in mice. 用同化疗法逆转小鼠的糖尿病骨特征。
IF 12.7 1区 医学
Bone Research Pub Date : 2023-04-19 DOI: 10.1038/s41413-023-00261-0
Silvia Marino, Nisreen Akel, Shenyang Li, Meloney Cregor, Meghan Jones, Betiana Perez, Gaston Troncoso, Jomeeka Meeks, Scott Stewart, Amy Y Sato, Intawat Nookaew, Teresita Bellido
{"title":"Reversal of the diabetic bone signature with anabolic therapies in mice.","authors":"Silvia Marino, Nisreen Akel, Shenyang Li, Meloney Cregor, Meghan Jones, Betiana Perez, Gaston Troncoso, Jomeeka Meeks, Scott Stewart, Amy Y Sato, Intawat Nookaew, Teresita Bellido","doi":"10.1038/s41413-023-00261-0","DOIUrl":"10.1038/s41413-023-00261-0","url":null,"abstract":"<p><p>The mechanisms underlying the bone disease induced by diabetes are complex and not fully understood; and antiresorptive agents, the current standard of care, do not restore the weakened bone architecture. Herein, we reveal the diabetic bone signature in mice at the tissue, cell, and transcriptome levels and demonstrate that three FDA-approved bone-anabolic agents correct it. Diabetes decreased bone mineral density (BMD) and bone formation, damaged microarchitecture, increased porosity of cortical bone, and compromised bone strength. Teriparatide (PTH), abaloparatide (ABL), and romosozumab/anti-sclerostin antibody (Scl-Ab) all restored BMD and corrected the deteriorated bone architecture. Mechanistically, PTH and more potently ABL induced similar responses at the tissue and gene signature levels, increasing both formation and resorption with positive balance towards bone gain. In contrast, Scl-Ab increased formation but decreased resorption. All agents restored bone architecture, corrected cortical porosity, and improved mechanical properties of diabetic bone; and ABL and Scl-Ab increased toughness, a fracture resistance index. Remarkably, all agents increased bone strength over the healthy controls even in the presence of severe hyperglycemia. These findings demonstrate the therapeutic value of bone anabolic agents to treat diabetes-induced bone disease and suggest the need for revisiting the approaches for the treatment of bone fragility in diabetes.</p>","PeriodicalId":9134,"journal":{"name":"Bone Research","volume":null,"pages":null},"PeriodicalIF":12.7,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10115794/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9635913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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