1
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Sun Y, Chen P, Zhao B. Role of extracellular vesicles associated with microRNAs and their interplay with cuproptosis in osteoporosis. Noncoding RNA Res 2024; 9:715-719. [PMID: 38577024 PMCID: PMC10990744 DOI: 10.1016/j.ncrna.2024.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 03/02/2024] [Accepted: 03/05/2024] [Indexed: 04/06/2024] Open
Abstract
Osteoporosis (OP)-associated fractures can result in severe morbidity and disability, reduced quality of life, and death. Previous studies have suggested that small noncoding RNAs, for example, small regulatory microRNAs (miRNAs), play a key role in OP by inhibiting target gene expression. Cuproptosis, a recently proposed copper-induced cell death pathway, is linked with OP. Here, we describe the contribution of exosomal miRNAs and cuproptosis to OP. First, we highlight the characteristics of exosomes and roles of exosome-related miRNAs. Next, we discuss the relationship between cuproptosis and OP. Subsequently, we analyze the crosstalk of exosomal miRNAs with cuproptosis in the development of OP. This review aims to investigate a new clinical treatment method for OP.
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Affiliation(s)
- Yong Sun
- Department of Sports Medicine, Fourth Medical Center of Chinese PLA General Hospital, Beijing, 100853, China
| | - Peng Chen
- Department of Orthopedics, The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, 510405, Guangdong Province, China
| | - Bin Zhao
- Department of Sports Medicine, Fourth Medical Center of Chinese PLA General Hospital, Beijing, 100853, China
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2
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Tao H, Zhu P, Xia W, Chu M, Chen K, Wang Q, Gu Y, Lu X, Bai J, Geng D. The Emerging Role of the Mitochondrial Respiratory Chain in Skeletal Aging. Aging Dis 2024; 15:1784-1812. [PMID: 37815897 PMCID: PMC11272194 DOI: 10.14336/ad.2023.0924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 09/24/2023] [Indexed: 10/12/2023] Open
Abstract
Maintenance of mitochondrial homeostasis is crucial for ensuring healthy mitochondria and normal cellular function. This process is primarily responsible for regulating processes that include mitochondrial OXPHOS, which generates ATP, as well as mitochondrial oxidative stress, apoptosis, calcium homeostasis, and mitophagy. Bone mesenchymal stem cells express factors that aid in bone formation and vascular growth. Positive regulation of hematopoietic stem cells in the bone marrow affects the differentiation of osteoclasts. Furthermore, the metabolic regulation of cells that play fundamental roles in various regions of the bone, as well as interactions within the bone microenvironment, actively participates in regulating bone integrity and aging. The maintenance of cellular homeostasis is dependent on the regulation of intracellular organelles, thus understanding the impact of mitochondrial functional changes on overall bone metabolism is crucially important. Recent studies have revealed that mitochondrial homeostasis can lead to morphological and functional abnormalities in senescent cells, particularly in the context of bone diseases. Mitochondrial dysfunction in skeletal diseases results in abnormal metabolism of bone-associated cells and a secondary dysregulated microenvironment within bone tissue. This imbalance in the oxidative system and immune disruption in the bone microenvironment ultimately leads to bone dysplasia. In this review, we examine the latest developments in mitochondrial respiratory chain regulation and its impacts on maintenance of bone health. Specifically, we explored whether enhancing mitochondrial function can reduce the occurrence of bone cell deterioration and improve bone metabolism. These findings offer prospects for developing bone remodeling biology strategies to treat age-related degenerative diseases.
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Affiliation(s)
- Huaqiang Tao
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Jiangsu, China.
| | - Pengfei Zhu
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Jiangsu, China.
| | - Wenyu Xia
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Jiangsu, China.
| | - Miao Chu
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Jiangsu, China.
| | - Kai Chen
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Jiangsu, China.
| | - Qiufei Wang
- Department of Orthopedics, Changshu Hospital Affiliated to Soochow University, First People’s Hospital of Changshu City, Jiangsu, China.
| | - Ye Gu
- Department of Orthopedics, Changshu Hospital Affiliated to Soochow University, First People’s Hospital of Changshu City, Jiangsu, China.
| | - Xiaomin Lu
- Department of Oncology, Affiliated Haian Hospital of Nantong University, Jiangsu, China.
| | - Jiaxiang Bai
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Jiangsu, China.
- Department of Orthopedics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Anhui, China.
| | - Dechun Geng
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Jiangsu, China.
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3
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Froemming MN, Khosla S, Farr JN. Marrow Adipocyte Senescence in the Pathogenesis of Bone Loss. Curr Osteoporos Rep 2024; 22:378-386. [PMID: 38829487 DOI: 10.1007/s11914-024-00875-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/23/2024] [Indexed: 06/05/2024]
Abstract
PURPOSE OF REVIEW Beyond aging, senescent cells accumulate during multiple pathological conditions, including chemotherapy, radiation, glucocorticoids, obesity, and diabetes, even earlier in life. Therefore, cellular senescence represents a unifying pathogenic mechanism driving skeletal and metabolic disorders. However, whether senescent bone marrow adipocytes (BMAds) are causal in mediating skeletal dysfunction has only recently been evaluated. RECENT FINDINGS Despite evidence of BMAd senescence following glucocorticoid therapy, additional evidence for BMAd senescence in other conditions has thus far been limited. Because the study of BMAds presents unique challenges making these cells difficult to isolate and image, here we review issues and approaches to overcome such challenges, and present advancements in isolation and histological techniques that may help with the future study of senescent BMAds. Further insights into the roles of BMAd senescence in the pathogenesis of skeletal dysfunction may have important basic science and clinical implications for human physiology and disease.
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Affiliation(s)
- Mitchell N Froemming
- Division of Endocrinology, Rochester, MN, 55905, USA
- Robert and Arlene Kogod Center On Aging, Rochester, MN, 55905, USA
| | - Sundeep Khosla
- Division of Endocrinology, Rochester, MN, 55905, USA
- Robert and Arlene Kogod Center On Aging, Rochester, MN, 55905, USA
| | - Joshua N Farr
- Division of Endocrinology, Rochester, MN, 55905, USA.
- Robert and Arlene Kogod Center On Aging, Rochester, MN, 55905, USA.
- Division of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Mayo Clinic, Rochester, MN, 55905, USA.
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4
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Guilatco AJ, Shah MV, Weivoda MM. Senescence in the bone marrow microenvironment: A driver in development of therapy-related myeloid neoplasms. J Bone Oncol 2024; 47:100620. [PMID: 39072049 PMCID: PMC11280103 DOI: 10.1016/j.jbo.2024.100620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Revised: 05/24/2024] [Accepted: 07/02/2024] [Indexed: 07/30/2024] Open
Abstract
Therapy-related myeloid neoplasms (t-MN) are a growing concern due to the continued use of cytotoxic therapies to treat malignancies. Cytotoxic therapies have been shown to drive therapy-induced senescence in normal tissues, including in the bone marrow microenvironment (BMME), which plays a crucial role in supporting normal hematopoiesis. This review examines recent work that focuses on the contribution of BMME senescence to t-MN pathogenesis, as well as offers a perspective on potential opportunities for therapeutic intervention.
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Affiliation(s)
- Angelo Jose Guilatco
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
- Cancer Biology Program, University of Michigan, Ann Arbor, MI, USA
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5
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Yuan T, Liu H, Abudoukadier M, Yang Z, Zhou Z, Cui Y. YTHDF2-Mediated m6A methylation inhibition by miR27a as a protective mechanism against hormonal osteonecrosis in BMSCs. BMC Musculoskelet Disord 2024; 25:359. [PMID: 38711079 PMCID: PMC11071322 DOI: 10.1186/s12891-024-07481-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Accepted: 04/28/2024] [Indexed: 05/08/2024] Open
Abstract
BACKGROUND With the increasing incidence of steroid-induced necrosis of the femoral head (SNFH), numerous scholars have investigated its pathogenesis. Current evidence suggests that the imbalance between lipogenesis and osteoblast differentiation in bone marrow mesenchymal stem cells (BMSCs) is a key pathological feature of SNFH. MicroRNAs (miRNAs) have strong gene regulatory effects and can influence the direction of cell differentiation. N6-methyladenosine (m6A) is a prevalent epigenetic modification involved in diverse pathophysiological processes. However, knowledge of how miRNAs regulate m6A-related factors that affect BMSC differentiation is limited. OBJECTIVE We aimed to investigate the role of miR27a in regulating the expression of YTHDF2 in BMSCs. METHODS We compared miR27a, YTHDF2, and total m6A mRNA levels in SNFH-affected and control BMSCs. CCK-8 and TUNEL assays were used to assess BMSC proliferation and apoptosis. Western blotting and qRT‒PCR were used to measure the expression of osteogenic (ALP, RUNX2, and OCN) and lipogenic (PPARγ and C/EBPα) markers. Alizarin Red and Oil Red O staining were used to quantify osteogenic and lipogenic differentiation, respectively. miR27a was knocked down or overexpressed to evaluate its impact on BMSC differentiation and its relationship with YTHDF2. Bioinformatics analyses identified YTHDF2 as a differentially expressed gene in SNFH (ROC analysis) and revealed potential signaling pathways through GSEA. The effects of YTHDF2 silencing on the lipogenic and osteogenic functions of BMSCs were assessed. RESULTS miR27a downregulation and YTHDF2 upregulation were observed in the SNFH BMSCs. miR27a knockdown/overexpression modulated YTHDF2 expression, impacting BMSC differentiation. miR27a silencing decreased m6A methylation and promoted osteogenic differentiation, while YTHDF2 silencing exerted similar effects. GSEA suggested potential signaling pathways associated with YTHDF2 in SNFH. CONCLUSION miR27a regulates BMSC differentiation through YTHDF2, affecting m6A methylation and promoting osteogenesis. This finding suggests a potential therapeutic target for SNFH.
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Affiliation(s)
- Tianyi Yuan
- The Fifth Clinical Medical College of Xinjiang Medical University, Xinjiang Uygur Autonomous Region, Urumqi, 830011, China
| | - Hongjiang Liu
- The Fifth Clinical Medical College of Xinjiang Medical University, Xinjiang Uygur Autonomous Region, Urumqi, 830011, China
| | - Maimaitiyibubaji Abudoukadier
- The Fifth Clinical Medical College of Xinjiang Medical University, Xinjiang Uygur Autonomous Region, Urumqi, 830011, China
| | - Zengqiang Yang
- The Fifth Clinical Medical College of Xinjiang Medical University, Xinjiang Uygur Autonomous Region, Urumqi, 830011, China
| | - Zhiheng Zhou
- The Fifth Clinical Medical College of Xinjiang Medical University, Xinjiang Uygur Autonomous Region, Urumqi, 830011, China
| | - Yong Cui
- Department of Orthopedic Center, The Fifth Affiliated Hospital of Xinjiang Medical University, Xinjiang Uygur Autonomous Region, Urumqi, 830011, China.
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6
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Deng TT, Ding WY, Lu XX, Zhang QH, Du JX, Wang LJ, Yang MN, Yin Y, Liu FJ. Pharmacological and mechanistic aspects of quercetin in osteoporosis. Front Pharmacol 2024; 15:1338951. [PMID: 38333006 PMCID: PMC10851760 DOI: 10.3389/fphar.2024.1338951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 01/10/2024] [Indexed: 02/10/2024] Open
Abstract
Osteoporosis (OP) is a bone disease associated with increasing age. Currently, the most common medications used to treat OP are anabolic agents, anti-resorptive agents, and medications with other mechanisms of action. However, many of these medications have unfavorable adverse effects or are not intended for long-term use, potentially exerting a severe negative impact on a patient's life and career and placing a heavy burden on families and society. There is an urgent need to find new drugs that can replace these and have fewer adverse effects. Quercetin (Que) is a common flavonol in nature. Numerous studies have examined the therapeutic applications of Que. However, a comprehensive review of the anti-osteoporotic effects of Que has not yet been conducted. This review aimed to describe the recent studies on the anti-osteoporotic effects of Que, including its biological, pharmacological, pharmacokinetic, and toxicological properties. The outcomes demonstrated that Que could enhance OP by increasing osteoblast differentiation and activity and reducing osteoclast differentiation and activity via the pathways of Wnt/β-catenin, BMP/SMAD/RUNX2, OPG/RANKL/RANK, ERK/JNK, oxidative stress, apoptosis, and transcription factors. Thus, Que is a promising novel drug for the treatment of OP.
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Affiliation(s)
- Ting-Ting Deng
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Wen-Yu Ding
- Shandong Institute of Endocrine and Metabolic Diseases, Jinan, China
- Endocrine and Metabolic Diseases Hospital of Shandong First Medical University, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Xi-Xue Lu
- Bone Biomechanics Engineering Laboratory of Shandong Province, Shandong Medicinal Biotechnology Center, School of Biomedical Sciences, Neck-Shoulder and Lumbocrural Pain Hospital of Shandong First Medical University, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Qing-Hao Zhang
- Bone Biomechanics Engineering Laboratory of Shandong Province, Shandong Medicinal Biotechnology Center, School of Biomedical Sciences, Neck-Shoulder and Lumbocrural Pain Hospital of Shandong First Medical University, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Jin-Xin Du
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Li-Juan Wang
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
- Bone Biomechanics Engineering Laboratory of Shandong Province, Shandong Medicinal Biotechnology Center, School of Biomedical Sciences, Neck-Shoulder and Lumbocrural Pain Hospital of Shandong First Medical University, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Mei-Na Yang
- NHC Key Laboratory of Biotechnology Drugs (Shandong Academy of Medical Sciences), Biomedical Sciences College, Shandong First Medical University, Jinan, China
| | - Ying Yin
- Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Fan-Jie Liu
- Bone Biomechanics Engineering Laboratory of Shandong Province, Shandong Medicinal Biotechnology Center, School of Biomedical Sciences, Neck-Shoulder and Lumbocrural Pain Hospital of Shandong First Medical University, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
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7
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Piao X, Kim JW, Hyun M, Wang Z, Park SG, Cho IA, Ryu JH, Lee BN, Song JH, Koh JT. Boeravinone B, a natural rotenoid, inhibits osteoclast differentiation through modulating NF-κB, MAPK and PI3K/Akt signaling pathways. BMB Rep 2023; 56:545-550. [PMID: 37574806 PMCID: PMC10618074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 05/23/2023] [Accepted: 08/12/2023] [Indexed: 08/15/2023] Open
Abstract
Osteoporosis is a major public health concern, which requires novel therapeutic strategies to prevent or mitigate bone loss. Natural compounds have attracted attention as potential therapeutic agents due to their safety and efficacy. In this study, we investigated the regulatory activities of boeravinone B (BOB), a natural rotenoid isolated from the medicinal plant Boerhavia diffusa, on the differentiation of osteoclasts and mesenchymal stem cells (MSCs), the two main cell components responsible for bone remodeling. We found that BOB inhibited osteoclast differentiation and function, as determined by TRAP staining and pit formation assay, with no significant cytotoxicity. Furthermore, our results showing that BOB ameliorates ovariectomyinduced bone loss demonstrated that BOB is also effective in vivo. BOB exerted its inhibitory effects on osteoclastogenesis by downregulating the RANKL/RANK signaling pathways, including NF-κB, MAPK, and PI3K/Akt, resulting in the suppression of osteoclast-specific gene expression. Further experiments revealed that, at least phenomenologically, BOB promotes osteoblast differentiation of bone marrow-derived MSCs but inhibits their differentiation into adipocytes. In conclusion, our study demonstrates that BOB inhibits osteoclastogenesis and promotes osteoblastogenesis in vitro by regulating various signaling pathways. These findings suggest that BOB has potential value as a novel therapeutic agent for the prevention and treatment of osteoporosis. [BMB Reports 2023; 56(10): 545-550].
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Affiliation(s)
- Xianyu Piao
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
- Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
| | - Jung-Woo Kim
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
- Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
| | - Moonjung Hyun
- Gyeongnam Biohealth Research Center, Gyeongnam Branch Institute, Korea Institute of Toxicology, Jinju 52834, Korea
| | - Zhao Wang
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
- Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
| | - Suk-Gyun Park
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
- Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
| | - In A Cho
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
- Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
| | - Je-Hwang Ryu
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
- Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
| | - Bin-Na Lee
- Department of Conservative Dentistry, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
| | - Ju Han Song
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
- Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
| | - Jeong-Tae Koh
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
- Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
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8
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Fan J, Zhang D, Jiang Y, Yu L, Han B, Qian Z. The effects of PPARγ inhibitor on bones and bone marrow fat in aged glucocorticoid-treated female rats. Exp Gerontol 2023; 181:112281. [PMID: 37659742 DOI: 10.1016/j.exger.2023.112281] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 08/26/2023] [Accepted: 08/30/2023] [Indexed: 09/04/2023]
Abstract
Progressive bone marrow (BM) fat accumulation is a common bone loss characteristic in older populations and glucocorticoid (GC)-induced skeletal destruction that is inversely associated with bone synthesis and directly associated with increased peroxisomal proliferator-activated receptor gamma (PPARγ) expression. PPARγ inhibition is an efficient therapeutic strategy for aged- and GC-related skeletal disorders. This study aimed to evaluate the effect of PPARγ inhibition on aged GC-treated female rats. It was hypothesised that bisphenol A diglycidyl ether (BADGE) could inhibit marrow adiposity and improve osteogenesis by inhibiting PPARγ, thereby preventing GC-induced osteoporosis (GIO). Female Sprague-Dawley rats (n = 32, age = 18 months) were randomly allocated to one of the following groups: (1) control, (2) BADGE (30 mg/kg/day, intraperitoneal), (3) methylprednisolone (MP; 30 mg/kg/day, subcutaneous), and (4) MP + BADGE. After eight weeks of treatment, bone density (BD) and trabecular bone microarchitectures were quantified by micro-computed tomography (CT), and BM adipocytes were quantified by histopathology. Additionally, mRNA and protein expression of adipogenic and osteogenic markers were quantified by reverse transcription-quantitative polymerase chain reaction. Furthermore, serum bone turnover biomarker levels were quantified by enzyme-linked immunosorbent assay. MP treatment led to marrow adipogenesis and bone deterioration. However, rats treated with MP + BADGE showed lower marrow adipogenesis, as indicated by smaller marrow adipocyte diameter, decreased density and area percentages, reduced expression of marrow adipogenic genes and proteins, improved BD and trabecular microarchitectures, increased expression of osteogenic genes and proteins, and higher levels of serum bone formation markers. These results were consistent with the differences observed between control and BADGE mono-treated rats. In conclusion, BADGE treatment attenuates BM adiposity and improves bone formation in aged GC-treated female rats by inhibiting PPARγ. Therefore, PPARγ might be a potential target for treating GIO in older populations.
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Affiliation(s)
- Jingzheng Fan
- Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin 300052, China.
| | - Dalong Zhang
- Department of Toxicology, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China
| | - Yuyan Jiang
- Department of Nuclear medicine, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Lechang Yu
- Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Bin Han
- Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Zhiyong Qian
- Department of Toxicology, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China.
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9
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Bensreti H, Alhamad DW, Gonzalez AM, Pizarro-Mondesir M, Bollag WB, Isales CM, McGee-Lawrence ME. Update on the Role of Glucocorticoid Signaling in Osteoblasts and Bone Marrow Adipocytes During Aging. Curr Osteoporos Rep 2023; 21:32-44. [PMID: 36564571 PMCID: PMC9936962 DOI: 10.1007/s11914-022-00772-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/15/2022] [Indexed: 12/25/2022]
Abstract
PURPOSE OF REVIEW Bone marrow adipose tissue (BMAT) in the skeleton likely plays a variety of physiological and pathophysiological roles that are not yet fully understood. In elucidating the complex relationship between bone and BMAT, glucocorticoids (GCs) are positioned to play a key role, as they have been implicated in the differentiation of bone marrow mesenchymal stem cells (BMSCs) between osteogenic and adipogenic lineages. The purpose of this review is to illuminate aspects of both endogenous and exogenous GC signaling, including the influence of GC receptors, in mechanisms of bone aging including relationships to BMAT. RECENT FINDINGS Harmful effects of GCs on bone mass involve several cellular pathways and events that can include BMSC differentiation bias toward adipogenesis and the influence of mature BMAT on bone remodeling through crosstalk. Interestingly, BMAT involvement remains poorly explored in GC-induced osteoporosis and warrants further investigation. This review provides an update on the current understanding of the role of glucocorticoids in the biology of osteoblasts and bone marrow adipocytes (BMAds).
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Affiliation(s)
- Husam Bensreti
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Dima W Alhamad
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Alejandro Marrero Gonzalez
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Manuel Pizarro-Mondesir
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Wendy B Bollag
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA, USA
- Charlie Norwood VA Medical Center, Augusta, GA, USA
| | - Carlos M Isales
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
- Department of Orthopaedic Surgery, Medical College of Georgia, Augusta University, Augusta, GA, USA
- Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Meghan E McGee-Lawrence
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA, USA.
- Department of Orthopaedic Surgery, Medical College of Georgia, Augusta University, Augusta, GA, USA.
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10
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Wang L, Lin B, Zhai M, Cui W, Hull L, Zizzo A, Li X, Kiang JG, Xiao M. Deteriorative Effects of Radiation Injury Combined with Skin Wounding in a Mouse Model. TOXICS 2022; 10:toxics10120785. [PMID: 36548618 PMCID: PMC9783596 DOI: 10.3390/toxics10120785] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 12/07/2022] [Accepted: 12/11/2022] [Indexed: 05/14/2023]
Abstract
Radiation-combined injury (RCI) augments the risk of morbidity and mortality when compared to radiation injury (RI) alone. No FDA-approved medical countermeasures (MCMs) are available for treating RCI. Previous studies implied that RI and RCI elicit differential mechanisms leading to their detrimental effects. We hypothesize that accelerating wound healing improves the survival of RCI mice. In the current study, we examined the effects of RCI at different doses on lethality, weight loss, wound closure delay, and proinflammatory status, and assessed the relative contribution of systemic and local elements to their delayed wound closure. Our data demonstrated that RCI increased the lethality and weight loss, delayed skin wound closure, and induced a systemic proinflammatory status in a radiation dose-dependent manner. We also demonstrated that delayed wound closure did not specifically depend on the extent of hematopoietic suppression, but was significantly influenced by the toxicity of the radiation-induced systemic inflammation and local elements, including the altered levels of proinflammatory chemokines and factors, and the dysregulated collagen homeostasis in the wounded area. In conclusion, the results from our study indicate a close association between delayed wound healing and the significantly altered pathways in RCI mice. This insightful information may contribute to the evaluation of the prognosis of RCI and development of MCMs for RCI.
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Affiliation(s)
- Li Wang
- Radiation Combined Injury Program, Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD 20817, USA
- Department of Pathology, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
| | - Bin Lin
- Radiation Combined Injury Program, Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD 20817, USA
| | - Min Zhai
- Radiation Combined Injury Program, Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD 20817, USA
| | - Wanchang Cui
- Radiation Combined Injury Program, Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD 20817, USA
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
| | - Lisa Hull
- Radiation Combined Injury Program, Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD 20817, USA
| | - Alex Zizzo
- Radiation Combined Injury Program, Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
| | - Xianghong Li
- Radiation Combined Injury Program, Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
| | - Juliann G. Kiang
- Radiation Combined Injury Program, Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
- Department of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
| | - Mang Xiao
- Radiation Combined Injury Program, Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
- Correspondence: ; Tel.: +1-301-295-2597
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11
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Chandra A, Lagnado AB, Farr JN, Doolittle M, Tchkonia T, Kirkland JL, LeBrasseur NK, Robbins PD, Niedernhofer LJ, Ikeno Y, Passos JF, Monroe DG, Pignolo RJ, Khosla S. Targeted clearance of p21- but not p16-positive senescent cells prevents radiation-induced osteoporosis and increased marrow adiposity. Aging Cell 2022; 21:e13602. [PMID: 35363946 PMCID: PMC9124310 DOI: 10.1111/acel.13602] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 03/09/2022] [Accepted: 03/20/2022] [Indexed: 12/14/2022] Open
Abstract
Cellular senescence, which is a major cause of tissue dysfunction with aging and multiple other conditions, is known to be triggered by p16Ink4a or p21Cip1 , but the relative contributions of each pathway toward inducing senescence are unclear. Here, we directly addressed this issue by first developing and validating a p21-ATTAC mouse with the p21Cip1 promoter driving a "suicide" transgene encoding an inducible caspase-8 which, upon induction, selectively kills p21Cip1 -expressing senescent cells. Next, we used the p21-ATTAC mouse and the established p16-INK-ATTAC mouse to directly compare the contributions of p21Cip1 versus p16Ink4a in driving cellular senescence in a condition where a tissue phenotype (bone loss and increased marrow adiposity) is clearly driven by cellular senescence-specifically, radiation-induced osteoporosis. Using RNA in situ hybridization, we confirmed the reduction in radiation-induced p21Cip1 - or p16Ink4a -driven transcripts following senescent cell clearance in both models. However, only clearance of p21Cip1 +, but not p16Ink4a +, senescent cells prevented both radiation-induced osteoporosis and increased marrow adiposity. Reduction in senescent cells with dysfunctional telomeres following clearance of p21Cip1 +, but not p16Ink4a +, senescent cells also reduced several of the radiation-induced pro-inflammatory senescence-associated secretory phenotype factors. Thus, by directly comparing senescent cell clearance using two parallel genetic models, we demonstrate that radiation-induced osteoporosis is driven predominantly by p21Cip1 - rather than p16Ink4a -mediated cellular senescence. Further, this approach can be used to dissect the contributions of these pathways in other senescence-associated conditions, including aging across tissues.
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Affiliation(s)
- Abhishek Chandra
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMinnesotaUSA
- Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMinnesotaUSA
| | - Anthony B. Lagnado
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMinnesotaUSA
- Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMinnesotaUSA
| | - Joshua N. Farr
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMinnesotaUSA
- Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMinnesotaUSA
- Division of EndocrinologyMayo ClinicRochesterMinnesotaUSA
| | - Madison Doolittle
- Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMinnesotaUSA
- Division of EndocrinologyMayo ClinicRochesterMinnesotaUSA
| | - Tamara Tchkonia
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMinnesotaUSA
- Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMinnesotaUSA
| | - James L. Kirkland
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMinnesotaUSA
- Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMinnesotaUSA
| | - Nathan K. LeBrasseur
- Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMinnesotaUSA
- Department of Physical Medicine and RehabilitationMayo ClinicRochesterMinnesotaUSA
| | - Paul D. Robbins
- Institute on the Biology of Aging and MetabolismDepartment of Biochemistry, Molecular Biology and BiophysicsUniversity of MinnesotaMinneapolisMinnesotaUSA
| | - Laura J. Niedernhofer
- Institute on the Biology of Aging and MetabolismDepartment of Biochemistry, Molecular Biology and BiophysicsUniversity of MinnesotaMinneapolisMinnesotaUSA
| | - Yuji Ikeno
- Department of Pathology and Laboratory MedicineUniversity of Texas Health Science CenterSan AntonioTexasUSA
| | - João F. Passos
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMinnesotaUSA
- Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMinnesotaUSA
| | - David G. Monroe
- Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMinnesotaUSA
- Division of EndocrinologyMayo ClinicRochesterMinnesotaUSA
| | - Robert J. Pignolo
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMinnesotaUSA
- Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMinnesotaUSA
- Division of EndocrinologyMayo ClinicRochesterMinnesotaUSA
| | - Sundeep Khosla
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMinnesotaUSA
- Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMinnesotaUSA
- Division of EndocrinologyMayo ClinicRochesterMinnesotaUSA
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Ali D, Tencerova M, Figeac F, Kassem M, Jafari A. The pathophysiology of osteoporosis in obesity and type 2 diabetes in aging women and men: The mechanisms and roles of increased bone marrow adiposity. Front Endocrinol (Lausanne) 2022; 13:981487. [PMID: 36187112 PMCID: PMC9520254 DOI: 10.3389/fendo.2022.981487] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 08/29/2022] [Indexed: 11/13/2022] Open
Abstract
Osteoporosis is defined as a systemic skeletal disease characterized by decreased bone mass and micro-architectural deterioration leading to increased fracture risk. Osteoporosis incidence increases with age in both post-menopausal women and aging men. Among other important contributing factors to bone fragility observed in osteoporosis, that also affect the elderly population, are metabolic disturbances observed in obesity and Type 2 Diabetes (T2D). These metabolic complications are associated with impaired bone homeostasis and a higher fracture risk. Expansion of the Bone Marrow Adipose Tissue (BMAT), at the expense of decreased bone formation, is thought to be one of the key pathogenic mechanisms underlying osteoporosis and bone fragility in obesity and T2D. Our review provides a summary of mechanisms behind increased Bone Marrow Adiposity (BMA) during aging and highlights the pre-clinical and clinical studies connecting obesity and T2D, to BMA and bone fragility in aging osteoporotic women and men.
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Affiliation(s)
- Dalia Ali
- Department of Molecular Endocrinology, KMEB, University of Southern Denmark and Odense University Hospital, Odense, Denmark
- *Correspondence: Dalia Ali, ; Abbas Jafari,
| | - Michaela Tencerova
- Laboratory of Molecular Physiology of Bone, Institute of Physiology of the Czech Academy of Sciences, Prague, Czechia
| | - Florence Figeac
- Department of Molecular Endocrinology, KMEB, University of Southern Denmark and Odense University Hospital, Odense, Denmark
| | - Moustapha Kassem
- Department of Molecular Endocrinology, KMEB, University of Southern Denmark and Odense University Hospital, Odense, Denmark
| | - Abbas Jafari
- Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, Denmark
- *Correspondence: Dalia Ali, ; Abbas Jafari,
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