101
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Chen Z, Ju Z, Sun Y. Aging, Causes, and Rejuvenation of Hematopoietic Stem Cells. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1442:201-210. [PMID: 38228966 DOI: 10.1007/978-981-99-7471-9_12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
Hematopoietic stem cells (HSCs) undergo an age-related functional decline, which leads to a disruption of the blood system and contributes to the development of aging-associated hematopoietic diseases and malignancies. In this section, we provide a summary of the key hallmarks associated with HSC aging. We also examine the causal factors that contribute to HSC aging and emphasize potential approaches to mitigate HSC aging and age-related hematopoietic disorders.
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Affiliation(s)
- Zhiyang Chen
- Key Laboratory of Regenerative Medicine of Ministry of Education, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Institute of Aging and Regenerative Medicine, Jinan University, Guangzhou, Guangdong, China
| | - Zhenyu Ju
- Key Laboratory of Regenerative Medicine of Ministry of Education, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Institute of Aging and Regenerative Medicine, Jinan University, Guangzhou, Guangdong, China
| | - Yan Sun
- Medical Research Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China.
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102
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Brunet A, Goodell MA, Rando TA. Ageing and rejuvenation of tissue stem cells and their niches. Nat Rev Mol Cell Biol 2023; 24:45-62. [PMID: 35859206 PMCID: PMC9879573 DOI: 10.1038/s41580-022-00510-w] [Citation(s) in RCA: 88] [Impact Index Per Article: 88.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/16/2022] [Indexed: 01/28/2023]
Abstract
Most adult organs contain regenerative stem cells, often organized in specific niches. Stem cell function is critical for tissue homeostasis and repair upon injury, and it is dependent on interactions with the niche. During ageing, stem cells decline in their regenerative potential and ability to give rise to differentiated cells in the tissue, which is associated with a deterioration of tissue integrity and health. Ageing-associated changes in regenerative tissue regions include defects in maintenance of stem cell quiescence, differentiation ability and bias, clonal expansion and infiltration of immune cells in the niche. In this Review, we discuss cellular and molecular mechanisms underlying ageing in the regenerative regions of different tissues as well as potential rejuvenation strategies. We focus primarily on brain, muscle and blood tissues, but also provide examples from other tissues, such as skin and intestine. We describe the complex interactions between different cell types, non-cell-autonomous mechanisms between ageing niches and stem cells, and the influence of systemic factors. We also compare different interventions for the rejuvenation of old regenerative regions. Future outlooks in the field of stem cell ageing are discussed, including strategies to counter ageing and age-dependent disease.
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Affiliation(s)
- Anne Brunet
- Department of Genetics, Stanford University, Stanford, CA, USA.
- Glenn Laboratories for the Biology of Ageing, Stanford University, Stanford, CA, USA.
| | - Margaret A Goodell
- Molecular and Cellular Biology Department, Baylor College of Medicine, Houston, TX, USA.
- Stem Cells and Regenerative Medicine Center, Baylor College of Medicine, Houston, TX, USA.
| | - Thomas A Rando
- Glenn Laboratories for the Biology of Ageing, Stanford University, Stanford, CA, USA.
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA, USA.
- Neurology Service, VA Palo Alto Health Care System, Palo Alto, CA, USA.
- Broad Stem Cell Research Center, University of California, Los Angeles, Los Angeles, CA, USA.
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103
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Ambrosi TH, Chan CKF. A seed-and-soil theory for blood ageing. Nat Cell Biol 2023; 25:9-11. [PMID: 36650380 PMCID: PMC10611483 DOI: 10.1038/s41556-022-01062-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Thomas H Ambrosi
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, USA
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Charles K F Chan
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, USA.
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA.
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104
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Mitchell CA, Verovskaya EV, Calero-Nieto FJ, Olson OC, Swann JW, Wang X, Hérault A, Dellorusso PV, Zhang SY, Svendsen AF, Pietras EM, Bakker ST, Ho TT, Göttgens B, Passegué E. Stromal niche inflammation mediated by IL-1 signalling is a targetable driver of haematopoietic ageing. Nat Cell Biol 2023; 25:30-41. [PMID: 36650381 PMCID: PMC7614279 DOI: 10.1038/s41556-022-01053-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 11/15/2022] [Indexed: 01/19/2023]
Abstract
Haematopoietic ageing is marked by a loss of regenerative capacity and skewed differentiation from haematopoietic stem cells (HSCs), leading to impaired blood production. Signals from the bone marrow niche tailor blood production, but the contribution of the old niche to haematopoietic ageing remains unclear. Here we characterize the inflammatory milieu that drives both niche and haematopoietic remodelling. We find decreased numbers and functionality of osteoprogenitors at the endosteum and expansion of central marrow LepR+ mesenchymal stromal cells associated with deterioration of the sinusoidal vasculature. Together, they create a degraded and inflamed old bone marrow niche. Niche inflammation in turn drives the chronic activation of emergency myelopoiesis pathways in old HSCs and multipotent progenitors, which promotes myeloid differentiation and hinders haematopoietic regeneration. Moreover, we show how production of interleukin-1β (IL-1β) by the damaged endosteum acts in trans to drive the proinflammatory nature of the central marrow, with damaging consequences for the old blood system. Notably, niche deterioration, HSC dysfunction and defective regeneration can all be ameliorated by blocking IL-1 signalling. Our results demonstrate that targeting IL-1 as a key mediator of niche inflammation is a tractable strategy to improve blood production during ageing.
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Affiliation(s)
- Carl A Mitchell
- Columbia Stem Cell Initiative, Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY, USA
| | - Evgenia V Verovskaya
- Columbia Stem Cell Initiative, Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY, USA
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Medicine, Division Hematology/Oncology, University of California San Francisco, San Francisco, CA, USA
| | - Fernando J Calero-Nieto
- Wellcome and MRC Cambridge Stem Cell Institute, Department of Haematology, Jeffrey Cheah Biomedical Centre, Cambridge University, Cambridge, UK
| | - Oakley C Olson
- Columbia Stem Cell Initiative, Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY, USA
| | - James W Swann
- Columbia Stem Cell Initiative, Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY, USA
| | - Xiaonan Wang
- Wellcome and MRC Cambridge Stem Cell Institute, Department of Haematology, Jeffrey Cheah Biomedical Centre, Cambridge University, Cambridge, UK
| | - Aurélie Hérault
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Medicine, Division Hematology/Oncology, University of California San Francisco, San Francisco, CA, USA
| | - Paul V Dellorusso
- Columbia Stem Cell Initiative, Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY, USA
| | - Si Yi Zhang
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Medicine, Division Hematology/Oncology, University of California San Francisco, San Francisco, CA, USA
| | - Arthur Flohr Svendsen
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Medicine, Division Hematology/Oncology, University of California San Francisco, San Francisco, CA, USA
| | - Eric M Pietras
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Medicine, Division Hematology/Oncology, University of California San Francisco, San Francisco, CA, USA
| | - Sietske T Bakker
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Medicine, Division Hematology/Oncology, University of California San Francisco, San Francisco, CA, USA
| | - Theodore T Ho
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Medicine, Division Hematology/Oncology, University of California San Francisco, San Francisco, CA, USA
| | - Berthold Göttgens
- Wellcome and MRC Cambridge Stem Cell Institute, Department of Haematology, Jeffrey Cheah Biomedical Centre, Cambridge University, Cambridge, UK
| | - Emmanuelle Passegué
- Columbia Stem Cell Initiative, Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY, USA.
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Medicine, Division Hematology/Oncology, University of California San Francisco, San Francisco, CA, USA.
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105
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Yuan G, Li Z, Lin X, Li N, Xu R. New perspective of skeletal stem cells. BIOMATERIALS TRANSLATIONAL 2022; 3:280-294. [PMID: 36846511 PMCID: PMC9947737 DOI: 10.12336/biomatertransl.2022.04.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 11/29/2022] [Accepted: 12/19/2022] [Indexed: 03/01/2023]
Abstract
Tissue-resident stem cells are a group of stem cells distinguished by their capacity for self-renewal and multilineage differentiation capability with tissue specificity. Among these tissue-resident stem cells, skeletal stem cells (SSCs) were discovered in the growth plate region through a combination of cell surface markers and lineage tracing series. With the process of unravelling the anatomical variation of SSCs, researchers were also keen to investigate the developmental diversity outside the long bones, including in the sutures, craniofacial sites, and spinal regions. Recently, fluorescence-activated cell sorting, lineage tracing, and single-cell sequencing have been used to map lineage trajectories by studying SSCs with different spatiotemporal distributions. The SSC niche also plays a pivotal role in regulating SSC fate, such as cell-cell interactions mediated by multiple signalling pathways. This review focuses on discussing the spatial and temporal distribution of SSCs, and broadening our understanding of the diversity and plasticity of SSCs by summarizing the progress of research into SSCs in recent years.
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Affiliation(s)
- Guixin Yuan
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Centre for Skeletal Stem Cell, State Key Laboratory of Cellular Stress Biology, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, Fujian Province, China,Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, School of Medicine, Xiamen University, Xiamen, Fujian Province, China,Department of Human Anatomy, School of Medicine, Xiamen University, Xiamen, Fujian Province, China
| | - Zan Li
- Department of Sports Medicine & Research Centre of Sports Medicine, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Xixi Lin
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Centre for Skeletal Stem Cell, State Key Laboratory of Cellular Stress Biology, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, Fujian Province, China,Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, School of Medicine, Xiamen University, Xiamen, Fujian Province, China,Department of Human Anatomy, School of Medicine, Xiamen University, Xiamen, Fujian Province, China
| | - Na Li
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Centre for Skeletal Stem Cell, State Key Laboratory of Cellular Stress Biology, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, Fujian Province, China,Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, School of Medicine, Xiamen University, Xiamen, Fujian Province, China,Department of Human Anatomy, School of Medicine, Xiamen University, Xiamen, Fujian Province, China,Corresponding authors: Ren Xu, ; Na Li,
| | - Ren Xu
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Centre for Skeletal Stem Cell, State Key Laboratory of Cellular Stress Biology, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, Fujian Province, China,Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, School of Medicine, Xiamen University, Xiamen, Fujian Province, China,Department of Human Anatomy, School of Medicine, Xiamen University, Xiamen, Fujian Province, China,Corresponding authors: Ren Xu, ; Na Li,
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106
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Li H, He Z, Li W, Li JJ, Lin J, Xing D. Self-assembled microtissues loaded with osteogenic MSCs for in vivo bone regeneration. Front Bioeng Biotechnol 2022; 10:1069804. [PMID: 36578514 PMCID: PMC9790896 DOI: 10.3389/fbioe.2022.1069804] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 11/28/2022] [Indexed: 12/14/2022] Open
Abstract
Bone regeneration strategies based on mesenchymal stem cell (MSC) therapy have received widespread attention. Although MSC incorporation into bone scaffolds can help with the repair process, a large number of studies demonstrate variable effects of MSCs with some noting that the inclusion of MSCs does not provide better outcomes compared to unseeded scaffolds. This may in part be related to low cell survival following implantation and/or limited ability to continue with osteogenic differentiation for pre-differentiated cells. In this study, we incorporated MSCs into gelatin microcryogels to form microtissues, and subjected these microtissues to osteogenic induction. We then mixed as-formed microtissues with those subjected to 6 days of osteogenic induction in different ratios, and investigated their ability to induce in vitro and in vivo osteogenesis during self-assembly. Using a full-thickness rat calvarial defect model, we found that undifferentiated and osteogenically induced microtissues mixed in a ratio of 2:1 produced the best outcomes of bone regeneration. This provides a new, customizable cell-based therapeutic strategy for in vivo repair of bone defects.
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Affiliation(s)
- Hui Li
- Arthritis Clinic and Research Center, Peking University People’s Hospital, Peking University, Beijing, China,Arthritis Institute, Peking University, Beijing, China
| | - Zihao He
- Arthritis Clinic and Research Center, Peking University People’s Hospital, Peking University, Beijing, China,Arthritis Institute, Peking University, Beijing, China
| | - Wenjing Li
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Department of Biomedical Engineering, School of Medicine, Tsinghua-Peking Center for Life Sciences, Tsinghua University, Beijing, China
| | - Jiao Jiao Li
- Kolling Institute, University of Sydney, Sydney, NSW, Australia
| | - Jianhao Lin
- Arthritis Clinic and Research Center, Peking University People’s Hospital, Peking University, Beijing, China,Arthritis Institute, Peking University, Beijing, China,*Correspondence: Jianhao Lin, ; Dan Xing,
| | - Dan Xing
- Arthritis Clinic and Research Center, Peking University People’s Hospital, Peking University, Beijing, China,Arthritis Institute, Peking University, Beijing, China,*Correspondence: Jianhao Lin, ; Dan Xing,
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107
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Feng H, Jiang B, Xing W, Sun J, Greenblatt MB, Zou W. Skeletal stem cells: origins, definitions, and functions in bone development and disease. LIFE MEDICINE 2022; 1:276-293. [PMID: 36811112 PMCID: PMC9938638 DOI: 10.1093/lifemedi/lnac048] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 11/04/2022] [Indexed: 12/13/2022]
Abstract
Skeletal stem cells (SSCs) are tissue-specific stem cells that can self-renew and sit at the apex of their differentiation hierarchy, giving rise to mature skeletal cell types required for bone growth, maintenance, and repair. Dysfunction in SSCs is caused by stress conditions like ageing and inflammation and is emerging as a contributor to skeletal pathology, such as the pathogenesis of fracture nonunion. Recent lineage tracing experiments have shown that SSCs exist in the bone marrow, periosteum, and resting zone of the growth plate. Unraveling their regulatory networks is crucial for understanding skeletal diseases and developing therapeutic strategies. In this review, we systematically introduce the definition, location, stem cell niches, regulatory signaling pathways, and clinical applications of SSCs.
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Affiliation(s)
- Heng Feng
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, CAS Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Bo Jiang
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, CAS Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Wenhui Xing
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, CAS Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Jun Sun
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY 10065, USA
| | - Matthew B Greenblatt
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY 10065, USA,Research Division, Hospital for Special Surgery, New York, NY 10065, USA
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108
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Gugala Z. What's New in Musculoskeletal Basic Science. J Bone Joint Surg Am 2022; 104:2047-2052. [PMID: 36476737 DOI: 10.2106/jbjs.22.00947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Zbigniew Gugala
- Department of Orthopaedic Surgery and Rehabilitation, The University of Texas Medical Branch, Galveston, Texas
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109
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Liu H, Li P, Zhang S, Xiang J, Yang R, Liu J, Shafiquzzaman M, Biswas S, Wei Z, Zhang Z, Zhou X, Yin F, Xie Y, Goff SP, Chen L, Li B. Prrx1 marks stem cells for bone, white adipose tissue and dermis in adult mice. Nat Genet 2022; 54:1946-1958. [PMID: 36456880 DOI: 10.1038/s41588-022-01227-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 10/14/2022] [Indexed: 12/03/2022]
Abstract
Specialized connective tissues, including bone and adipose tissues, control various physiological activities, including mineral and energy homeostasis. However, the identity of stem cells maintaining these tissues throughout adulthood remains elusive. By conducting genetic lineage tracing and cell depletion experiments in newly generated knock-in Cre/CreERT2 lines, we show here that rare Prrx1-expressing cells act as stem cells for bone, white adipose tissue and dermis in adult mice, which are indispensable for the homeostasis and repair of these tissues. Single-cell profiling reveals the cycling and multipotent nature of Prrx1-expressing cells and the stemness of these cells is further validated by transplantation assays. Moreover, we identify the cell surface markers for Prrx1-expressing stem cells and show that the activities of these stem cells are regulated by Wnt signaling. These findings expand our knowledge of connective tissue homeostasis/regeneration and may help improve stem-cell-based therapies.
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Affiliation(s)
- Huijuan Liu
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai, China.,Department of Osteoporosis and Bone Diseases, Shanghai Clinical Research Center of Bone Disease, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Ping Li
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai, China
| | - Shaoyang Zhang
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai, China
| | - Jinnan Xiang
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai, China
| | - Ruichen Yang
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai, China
| | - Jiajia Liu
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai, China
| | - Md Shafiquzzaman
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai, China
| | - Soma Biswas
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai, China
| | - Zhanying Wei
- Department of Osteoporosis and Bone Diseases, Shanghai Clinical Research Center of Bone Disease, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Zhenlin Zhang
- Department of Osteoporosis and Bone Diseases, Shanghai Clinical Research Center of Bone Disease, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Xin Zhou
- Institute of Traditional Chinese Medicine and Stem Cell Research, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Feng Yin
- Translational Medical Center for Stem Cell Therapy, Shanghai East Hospital, Tongji University, Shanghai, China.,Department of Joint and Sports Medicine, East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yangli Xie
- Department Of Wound Repair and Rehabilitation Medicine, Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
| | - Stephen P Goff
- Howard Hughes Medical Institute, Department of Biochemistry and Molecular Biophysics, and Department of Microbiology and Immunology, Columbia University, New York, NY, USA
| | - Lin Chen
- Department Of Wound Repair and Rehabilitation Medicine, Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China.
| | - Baojie Li
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai, China. .,Institute of Traditional Chinese Medicine and Stem Cell Research, Chengdu University of Traditional Chinese Medicine, Chengdu, China. .,Translational Medical Center for Stem Cell Therapy, Shanghai East Hospital, Tongji University, Shanghai, China.
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110
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Paracrine-mediated rejuvenation of aged mesenchymal stem cells is associated with downregulation of the autophagy-lysosomal pathway. NPJ AGING 2022; 8:10. [PMID: 35927427 PMCID: PMC9293998 DOI: 10.1038/s41514-022-00091-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Accepted: 06/30/2022] [Indexed: 12/02/2022]
Abstract
Age-related differences in stem-cell potency contribute to variable outcomes in clinical stem cell trials. To help understand the effect of age on stem cell potency, bone marrow-derived mesenchymal stem cells (MSCs) were isolated from young (6 weeks) and old (18–24 months) mice. HUVEC tubule formation (TF) induced by the old and young MSCs and ELISA of conditioned media were compared to one another, and to old MSCs after 7 d in indirect co-culture with young MSCs. Old MSCs induced less TF than did young (1.56 ± 0.11 vs 2.38 ± 0.17, p = 0.0003) and released lower amounts of VEGF (p = 0.009) and IGF1 (p = 0.037). After 7 d in co-culture with young MSCs, TF by the old MSCs significantly improved (to 2.09 ± 0.18 from 1.56 ± 0.11; p = 0.013), and was no longer different compared to TF from young MSCs (2.09 ± 0.18 vs 2.38 ± 0.17; p = 0.27). RNA seq of old MSCs, young MSCs, and old MSCs following co-culture with young MSCs revealed that the age-related differences were broadly modified by co-culture, with the most significant changes associated with lysosomal pathways. These results indicate that the age-associated decreased paracrine-mediated effects of old MSCs are improved following indirect co-culture with young MSC. The observed effect is associated with broad transcriptional modification, suggesting potential targets to both assess and improve the therapeutic potency of stem cells from older patients.
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111
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Tan C, Rudd CD, Parsons AJ, Sharmin N, Ahmed I. L-DOPA coating improved phosphate glass fibre strength and fibre/matrix interface. J Mech Behav Biomed Mater 2022; 136:105480. [PMID: 36183666 DOI: 10.1016/j.jmbbm.2022.105480] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 09/16/2022] [Accepted: 09/18/2022] [Indexed: 11/21/2022]
Abstract
The levodopa (L-DOPA) has been reported as a promising adhesive for various materials. In this study, we utilized L-DOPA as an interfacial agent for phosphate glass fibre/polycaprolactone (PGF/PCL) composites, with the aim to enhance the interfacial properties between the fibres and polymer matrix. The PGFs were dip-coated in varying concentrations of L-DOPA solution ranging between 5 and 40 g L-1. The fibre strength and interfacial shear strength (IFSS) of the composites were measured via a single fibre tensile test and single fibre fragmentation test, respectively. It was found that the L-DOPA agent (at conc. 10 g L-1) significantly improved the IFSS of the composites up to 27%. Also, the L-DOPA coating (at conc. 40 g L-1) significantly increased the glass fibre strength up to 18%. As a result, an optimum coating level could be tailored depending on application and whether fibre strength or IFSS was of greater importance. In addition, SEM and TGA analyses were used to detect and quantify the coating agents. FTIR and XPS further confirmed presence of the coating and indicated the zwitterionic crystals of L-DOPA and the formation of a melanin-like polymer layer. The spectroscopy data also evidenced that both catechol and amine groups contributed to the interaction between the L-DOPA and the PGF surface.
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Affiliation(s)
- Chao Tan
- College of Materials Science and Engineering, Sichuan University, Chengdu, 610065, China.
| | | | - Andrew J Parsons
- Composites Research Group, Faculty of Engineering, University of Nottingham, Nottingham, NG7 2RD, UK.
| | - Nusrat Sharmin
- Department of Processing Technology, Nofima AS, Richard Johnsens Gate 4, 4021, Stavanger, Norway.
| | - Ifty Ahmed
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, Nottingham, NG7 2RD, UK.
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112
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Zha W, Sun Y, Gong W, Li L, Kim W, Li H. Ginseng and ginsenosides: Therapeutic potential for sarcopenia. Biomed Pharmacother 2022; 156:113876. [DOI: 10.1016/j.biopha.2022.113876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/05/2022] [Accepted: 10/13/2022] [Indexed: 11/02/2022] Open
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113
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Xiong Y, Mi BB, Lin Z, Hu YQ, Yu L, Zha KK, Panayi AC, Yu T, Chen L, Liu ZP, Patel A, Feng Q, Zhou SH, Liu GH. The role of the immune microenvironment in bone, cartilage, and soft tissue regeneration: from mechanism to therapeutic opportunity. Mil Med Res 2022; 9:65. [PMID: 36401295 PMCID: PMC9675067 DOI: 10.1186/s40779-022-00426-8] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 10/30/2022] [Indexed: 11/21/2022] Open
Abstract
Bone, cartilage, and soft tissue regeneration is a complex spatiotemporal process recruiting a variety of cell types, whose activity and interplay must be precisely mediated for effective healing post-injury. Although extensive strides have been made in the understanding of the immune microenvironment processes governing bone, cartilage, and soft tissue regeneration, effective clinical translation of these mechanisms remains a challenge. Regulation of the immune microenvironment is increasingly becoming a favorable target for bone, cartilage, and soft tissue regeneration; therefore, an in-depth understanding of the communication between immune cells and functional tissue cells would be valuable. Herein, we review the regulatory role of the immune microenvironment in the promotion and maintenance of stem cell states in the context of bone, cartilage, and soft tissue repair and regeneration. We discuss the roles of various immune cell subsets in bone, cartilage, and soft tissue repair and regeneration processes and introduce novel strategies, for example, biomaterial-targeting of immune cell activity, aimed at regulating healing. Understanding the mechanisms of the crosstalk between the immune microenvironment and regeneration pathways may shed light on new therapeutic opportunities for enhancing bone, cartilage, and soft tissue regeneration through regulation of the immune microenvironment.
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Affiliation(s)
- Yuan Xiong
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.,Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Bo-Bin Mi
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.,Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Ze Lin
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.,Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Yi-Qiang Hu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.,Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Le Yu
- Department of Chemical and Biomolecular Engineering, Ohio University, Athens, OH, 45701, USA
| | - Kang-Kang Zha
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.,Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China.,Key Laboratory of Biorheological Science and Technology,Ministry of Education College of Bioengineering, Chongqing University, Shapingba, Chongqing, 400044, China
| | - Adriana C Panayi
- Department of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02152, USA
| | - Tao Yu
- Department of Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Lang Chen
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.,Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China.,Department of Physics, Center for Hybrid Nanostructure (CHyN), University of Hamburg, Hamburg, 22761, Germany
| | - Zhen-Ping Liu
- Department of Physics, Center for Hybrid Nanostructure (CHyN), University of Hamburg, Hamburg, 22761, Germany.,Joint Laboratory of Optofluidic Technology and System,National Center for International Research on Green Optoelectronics, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, China
| | - Anish Patel
- Skeletal Biology Laboratory, Department of Orthopedic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02120, USA
| | - Qian Feng
- Key Laboratory of Biorheological Science and Technology,Ministry of Education College of Bioengineering, Chongqing University, Shapingba, Chongqing, 400044, China.
| | - Shuan-Hu Zhou
- Skeletal Biology Laboratory, Department of Orthopedic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02120, USA. .,Harvard Stem Cell Institute, Harvard University, Cambridge, MA, 02138, USA.
| | - Guo-Hui Liu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China. .,Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China.
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114
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Jeffery EC, Mann TLA, Pool JA, Zhao Z, Morrison SJ. Bone marrow and periosteal skeletal stem/progenitor cells make distinct contributions to bone maintenance and repair. Cell Stem Cell 2022; 29:1547-1561.e6. [PMID: 36272401 DOI: 10.1016/j.stem.2022.10.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 09/15/2022] [Accepted: 10/06/2022] [Indexed: 01/09/2023]
Abstract
A fundamental question in bone biology concerns the contributions of skeletal stem/progenitor cells (SSCs) in the bone marrow versus the periosteum to bone repair. We found that SSCs in adult bone marrow can be identified based on Leprcre and Adiponectin-cre/creER expression while SSCs in adult periosteum can be identified based on Gli1creERT2 expression. Under steady-state conditions, new bone arose primarily from bone marrow SSCs. After bone injuries, both SSC populations began proliferating but made very different contributions to bone repair. Drill injuries were primarily repaired by LepR+/Adiponectin+ bone marrow SSCs. Conversely, bicortical fractures were primarily repaired by Gli1+ periosteal SSCs, though LepR+/Adiponectin+ bone marrow cells transiently formed trabecular bone at the fracture site. Gli1+ periosteal cells also regenerated LepR+ bone marrow stromal cells that expressed hematopoietic niche factors at fracture sites. Different bone injuries are thus repaired by different SSCs, with periosteal cells regenerating bone and marrow stroma after non-stabilized fractures.
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Affiliation(s)
- Elise C Jeffery
- Children's Research Institute and the Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Terry L A Mann
- Children's Research Institute and the Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Jade A Pool
- Children's Research Institute and the Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Zhiyu Zhao
- Children's Research Institute and the Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Sean J Morrison
- Children's Research Institute and the Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
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115
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Zhang HX, Cao C, Li XH, Chen Y, Zhang Y, Liu Y, Gong Y, Qiu X, Zhou C, Chen Y, Wang Z, Yang JX, Cheng L, Chen XD, Shen H, Xiao HM, Tan LJ, Deng HW. Imputation of Human Primary Osteoblast Single Cell RNA-Seq Data Identified Three Novel Osteoblastic Subtypes. FRONT BIOSCI-LANDMRK 2022; 27:295. [PMID: 36336853 PMCID: PMC11097352 DOI: 10.31083/j.fbl2710295] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 07/01/2022] [Accepted: 07/14/2022] [Indexed: 01/07/2023]
Abstract
BACKGROUND Recently, single-cell RNA sequencing (scRNA-seq) technology was increasingly used to study transcriptomics at a single-cell resolution, scRNA-seq analysis was complicated by the "dropout", where the data only captures a small fraction of the transcriptome. This phenomenon can lead to the fact that the actual expressed transcript may not be detected. We previously performed osteoblast subtypes classification and dissection on freshly isolated human osteoblasts. MATERIALS AND METHODS Here, we used the scImpute method to impute the missing values of dropout genes from a scRNA-seq dataset generated on freshly isolated human osteoblasts. RESULTS Based on the imputed gene expression patterns, we discovered three new osteoblast subtypes. Specifically, these newfound osteoblast subtypes are osteoblast progenitors, and two undetermined osteoblasts. Osteoblast progenitors showed significantly high expression of proliferation related genes (FOS, JUN, JUNB and JUND). Analysis of each subtype showed that in addition to bone formation, these undetermined osteoblasts may involve osteoclast and adipocyte differentiation and have the potential function of regulate immune activation. CONCLUSIONS Our findings provided a new perspective for studying the osteoblast heterogeneity and potential biological functions of these freshly isolated human osteoblasts at the single-cell level, which provides further insight into osteoblasts subtypes under various (pathological) physiological conditions.
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Affiliation(s)
- Hui-Xi Zhang
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, 410081 Changsha, Hunan, China
| | - Chong Cao
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, 410081 Changsha, Hunan, China
| | - Xiao-Hua Li
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, 410081 Changsha, Hunan, China
| | - Yan Chen
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, 410081 Changsha, Hunan, China
| | - Yue Zhang
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, 410081 Changsha, Hunan, China
| | - Ying Liu
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, 410081 Changsha, Hunan, China
| | - Yun Gong
- Tulane Center of Biomedical Informatics and Genomics, Deming Department of Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Xiang Qiu
- School of Basic Medical Science, Central South University, 410008 Changsha, Hunan, China
| | - Cui Zhou
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, 410081 Changsha, Hunan, China
| | - Yu Chen
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, 410081 Changsha, Hunan, China
| | - Zun Wang
- Xiangya Nursing School, Central South University, 410013 Changsha, Hunan, China
| | - Jun-Xiao Yang
- Department of Orthopedics, Xiangya Hospital, Central South University, 410008 Changsha, Hunan, China
| | - Liang Cheng
- Department of Orthopedics and National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, 410008 Changsha, Hunan, China
| | - Xiang-Ding Chen
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, 410081 Changsha, Hunan, China
| | - Hui Shen
- Tulane Center of Biomedical Informatics and Genomics, Deming Department of Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Hong-Mei Xiao
- School of Basic Medical Science, Central South University, 410008 Changsha, Hunan, China
- Center of Reproductive Health, System Biology and Data Information, Institute of Reproductive & Stem Cell Engineering, School of Basic Medical Science, Central South University, 410081 Changsha, Hunan, China
| | - Li-Jun Tan
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, 410081 Changsha, Hunan, China
| | - Hong-Wen Deng
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, 410081 Changsha, Hunan, China
- Tulane Center of Biomedical Informatics and Genomics, Deming Department of Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA
- School of Basic Medical Science, Central South University, 410008 Changsha, Hunan, China
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116
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Goodnough LH, Goodman SB. Relationship of Aging, Inflammation, and Skeletal Stem Cells and Their Effects on Fracture Repair. Curr Osteoporos Rep 2022; 20:320-325. [PMID: 36129609 DOI: 10.1007/s11914-022-00742-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/10/2022] [Indexed: 11/24/2022]
Abstract
PURPOSE OF REVIEW This review summarizes recent investigations into the cellular and molecular effects of skeletal aging on the inflammatory response and stem cell function after fracture. RECENT FINDINGS Proper regulation of the inflammatory phase of fracture healing is essential. Aging is associated with chronic inflammation, which inhibits bone formation and promotes bone resorption. Osteogenic differentiation and anti-senescence pathways in skeletal stem cells are impaired in geriatric fractures. As the population ages, fragility fractures will continue to represent a significant clinical problem, which will require innovative clinical solutions. Skeletal stem cells in geriatric individuals demonstrate defects in anti-senescence pathways that lead to impaired osteogenic differentiation in vitro in humans. Small molecule-based therapies can partially reverse the aging phenotype. In the future, molecular- or cell-based therapies modulating either inflammatory cells or skeletal stem cells represent potential therapeutic targets to augment contemporary fracture healing interventions in osteoporotic or aging individuals.
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Affiliation(s)
- L Henry Goodnough
- Department of Orthopaedic Surgery, Stanford University School of Medicine, 450 Broadway Avenue, M/C 6342, Redwood City, CA, 94063, USA.
| | - Stuart B Goodman
- Surgery, Stanford University Medical Center Outpatient Center, 450 Broadway St., M/C 6342, Redwood City, CA, 94063, USA
- Department of Orthopaedic Surgery, Stanford University Medical Center Outpatient Center, 450 Broadway St., M/C 6342, Redwood City, CA, 94063, USA
- Bioengineering, Stanford University Medical Center Outpatient Center, 450 Broadway St., M/C 6342, Redwood City, CA, 94063, USA
- Stanford University Medical Center, Redwood City, CA, USA
- Department of Orthopaedic Surgery, Stanford University, Redwood City, CA, USA
- Lucile Salter Packard Children's Hospital at Stanford, Palo Alto, CA, USA
- Institute of Chemistry, Engineering and Medicine for Human Health (ChEM-H), Stanford University, Redwood City, CA, USA
- Department of Biomechanical Engineering, Stanford University, Redwood City, CA, USA
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117
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Zhu Q, Ding L, Yue R. Skeletal stem cells: a game changer of skeletal biology and regenerative medicine? LIFE MEDICINE 2022; 1:294-306. [PMID: 36811113 PMCID: PMC9938637 DOI: 10.1093/lifemedi/lnac038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 09/13/2022] [Indexed: 11/12/2022]
Abstract
Skeletal stem cells (SSCs) were originally discovered in the bone marrow stroma. They are capable of self-renewal and multilineage differentiation into osteoblasts, chondrocytes, adipocytes, and stromal cells. Importantly, these bone marrow SSCs localize in the perivascular region and highly express hematopoietic growth factors to create the hematopoietic stem cell (HSC) niche. Thus, bone marrow SSCs play pivotal roles in orchestrating osteogenesis and hematopoiesis. Besides the bone marrow, recent studies have uncovered diverse SSC populations in the growth plate, perichondrium, periosteum, and calvarial suture at different developmental stages, which exhibit distinct differentiation potential under homeostatic and stress conditions. Therefore, the current consensus is that a panel of region-specific SSCs collaborate to regulate skeletal development, maintenance, and regeneration. Here, we will summarize recent advances of SSCs in long bones and calvaria, with a special emphasis on the evolving concept and methodology in the field. We will also look into the future of this fascinating research area that may ultimately lead to effective treatment of skeletal disorders.
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Affiliation(s)
- Qiaoling Zhu
- Institute for Regenerative Medicine, Shanghai East Hospital, Frontier Science Center for Stem Cell Research, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Lei Ding
- Columbia Stem Cell Initiative, Department of Rehabilitation and Regenerative Medicine and Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York, NY 10032, USA
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118
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Sun Q, Yin W, Ru X, Liu C, Song B, Qian Z. Dual role of injectable curcumin-loaded microgels for efficient repair of osteoarthritic cartilage injury. Front Bioeng Biotechnol 2022; 10:994816. [PMID: 36177180 PMCID: PMC9513030 DOI: 10.3389/fbioe.2022.994816] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 08/23/2022] [Indexed: 11/13/2022] Open
Abstract
Curcumin has been widely used for the treatment of age-associated diseases, and showed chondroprotective potential for post-traumatic osteoarthritis (OA). However, due to the irregular-shaped and large-sized defects on joint cartilage in degenerated OA, the in vivo delivery and therapeutic effect of curcumin for effective repair remain challenging. In this study, we first present a PEG-GelMA [Poly(Ethylene Glycol) Dimethacrylate-Gelatin Methacrylate, PGMs] hydrogel microgel-based curcumin delivery system for both improved anti-inflammatory and pro-regenerative effects in treatment for cartilage defects. The curcumin-loaded PGMs were produced by a microfluidic system based on light-induced gelation of gelatin methacrylate (GelMA). This PGMs embedding curcumin at a relative low dosage were demonstrated to promote the proliferation and chondrogenic differentiation of mesenchymal stem cells in vitro. More importantly, the PGMs were shown to attenuate the inflammatory response of chondrocytes under IL-1β stimulation. Lastly, the in vivo application of the injectable PGMs significantly promoted the repair of large-sized cartilage injury. These results confirmed that curcumin-loaded PGMs can not only enhance the chondroprotective efficacy under inflammatory conditions but also induce efficient cartilage regeneration. This study provides an advanced strategy with anti-inflammatory and pro-regenerative dual-role therapeutic for treatment of extensive cartilage injuries.
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Affiliation(s)
- Qicai Sun
- Department of Orthopaedic Surgery, Zhejiang Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Wei Yin
- Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Xuanliang Ru
- Department of Orthopaedic Surgery, Zhejiang Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Chun Liu
- Department of Orthopaedic Surgery, Zhejiang Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Baishan Song
- Department of Orthopaedic Surgery, Zhejiang Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- *Correspondence: Baishan Song, ; Zhigang Qian,
| | - Zhigang Qian
- Department of Orthopaedic Surgery, Zhejiang Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- *Correspondence: Baishan Song, ; Zhigang Qian,
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119
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Zhang X, Jiang W, Xie C, Wu X, Ren Q, Wang F, Shen X, Hong Y, Wu H, Liao Y, Zhang Y, Liang R, Sun W, Gu Y, Zhang T, Chen Y, Wei W, Zhang S, Zou W, Ouyang H. Msx1 + stem cells recruited by bioactive tissue engineering graft for bone regeneration. Nat Commun 2022; 13:5211. [PMID: 36064711 PMCID: PMC9445030 DOI: 10.1038/s41467-022-32868-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Accepted: 08/17/2022] [Indexed: 12/11/2022] Open
Abstract
Critical-sized bone defects often lead to non-union and full-thickness defects of the calvarium specifically still present reconstructive challenges. In this study, we show that neurotrophic supplements induce robust in vitro expansion of mesenchymal stromal cells, and in situ transplantation of neurotrophic supplements-incorporated 3D-printed hydrogel grafts promote full-thickness regeneration of critical-sized bone defects. Single-cell RNA sequencing analysis reveals that a unique atlas of in situ stem/progenitor cells is generated during the calvarial bone healing in vivo. Notably, we find a local expansion of resident Msx1+ skeletal stem cells after transplantation of the in situ cell culture system. Moreover, the enhanced calvarial bone regeneration is accompanied by an increased endochondral ossification that closely correlates to the Msx1+ skeletal stem cells. Our findings illustrate the time-saving and regenerative efficacy of in situ cell culture systems targeting major cell subpopulations in vivo for rapid bone tissue regeneration. Critical-sized bone defects still present clinical challenges. Here the authors show that transplantation of neurotrophic supplement-incorporated hydrogel grafts promote full-thickness regeneration of the calvarium and perform scRNA-seq to reveal contributing stem/progenitor cells, notably a resident Msx1+ skeletal stem cell population.
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Affiliation(s)
- Xianzhu Zhang
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Department of Sports Medicine, Zhejiang University School of Medicine, Hangzhou, China.,Zhejiang University-University of Edinburgh Institute, Zhejiang University School of Medicine, and Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China
| | - Wei Jiang
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Zhejiang University-University of Edinburgh Institute, Zhejiang University School of Medicine, and Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China
| | - Chang Xie
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Department of Sports Medicine, Zhejiang University School of Medicine, Hangzhou, China.,Zhejiang University-University of Edinburgh Institute, Zhejiang University School of Medicine, and Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China
| | - Xinyu Wu
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Zhejiang University-University of Edinburgh Institute, Zhejiang University School of Medicine, and Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China
| | - Qian Ren
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Sciences, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Fei Wang
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Zhejiang University-University of Edinburgh Institute, Zhejiang University School of Medicine, and Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China
| | - Xilin Shen
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Zhejiang University-University of Edinburgh Institute, Zhejiang University School of Medicine, and Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China
| | - Yi Hong
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Zhejiang University-University of Edinburgh Institute, Zhejiang University School of Medicine, and Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China
| | - Hongwei Wu
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Zhejiang University-University of Edinburgh Institute, Zhejiang University School of Medicine, and Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China
| | - Youguo Liao
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Zhejiang University-University of Edinburgh Institute, Zhejiang University School of Medicine, and Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China
| | - Yi Zhang
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Zhejiang University-University of Edinburgh Institute, Zhejiang University School of Medicine, and Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China
| | - Renjie Liang
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Zhejiang University-University of Edinburgh Institute, Zhejiang University School of Medicine, and Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China
| | - Wei Sun
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Zhejiang University-University of Edinburgh Institute, Zhejiang University School of Medicine, and Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China
| | - Yuqing Gu
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Zhejiang University-University of Edinburgh Institute, Zhejiang University School of Medicine, and Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China
| | - Tao Zhang
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Zhejiang University-University of Edinburgh Institute, Zhejiang University School of Medicine, and Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China
| | - Yishan Chen
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Zhejiang University-University of Edinburgh Institute, Zhejiang University School of Medicine, and Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China
| | - Wei Wei
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Zhejiang University-University of Edinburgh Institute, Zhejiang University School of Medicine, and Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China
| | - Shufang Zhang
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Zhejiang University-University of Edinburgh Institute, Zhejiang University School of Medicine, and Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China
| | - Weiguo Zou
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Sciences, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China.,China Orthopedic Regenerative Medicine Group (CORMed), Hangzhou, China
| | - Hongwei Ouyang
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China. .,Department of Sports Medicine, Zhejiang University School of Medicine, Hangzhou, China. .,Zhejiang University-University of Edinburgh Institute, Zhejiang University School of Medicine, and Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China. .,China Orthopedic Regenerative Medicine Group (CORMed), Hangzhou, China.
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The landscape of aging. SCIENCE CHINA LIFE SCIENCES 2022; 65:2354-2454. [PMID: 36066811 PMCID: PMC9446657 DOI: 10.1007/s11427-022-2161-3] [Citation(s) in RCA: 101] [Impact Index Per Article: 50.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 07/05/2022] [Indexed: 02/07/2023]
Abstract
Aging is characterized by a progressive deterioration of physiological integrity, leading to impaired functional ability and ultimately increased susceptibility to death. It is a major risk factor for chronic human diseases, including cardiovascular disease, diabetes, neurological degeneration, and cancer. Therefore, the growing emphasis on “healthy aging” raises a series of important questions in life and social sciences. In recent years, there has been unprecedented progress in aging research, particularly the discovery that the rate of aging is at least partly controlled by evolutionarily conserved genetic pathways and biological processes. In an attempt to bring full-fledged understanding to both the aging process and age-associated diseases, we review the descriptive, conceptual, and interventive aspects of the landscape of aging composed of a number of layers at the cellular, tissue, organ, organ system, and organismal levels.
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Goodnough LH, Ambrosi TH, Steininger HM, Butler MGK, Hoover MY, Choo H, Van Rysselberghe NL, Bellino MJ, Bishop JA, Gardner MJ, Chan CKF. Cross-species comparisons reveal resistance of human skeletal stem cells to inhibition by non-steroidal anti-inflammatory drugs. Front Endocrinol (Lausanne) 2022; 13:924927. [PMID: 36093067 PMCID: PMC9454294 DOI: 10.3389/fendo.2022.924927] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 07/13/2022] [Indexed: 11/13/2022] Open
Abstract
Fracture healing is highly dependent on an early inflammatory response in which prostaglandin production by cyclo-oxygenases (COX) plays a crucial role. Current patient analgesia regimens favor opioids over Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) since the latter have been implicated in delayed fracture healing. While animal studies broadly support a deleterious role of NSAID treatment to bone-regenerative processes, data for human fracture healing remains contradictory. In this study, we prospectively isolated mouse and human skeletal stem cells (SSCs) from fractures and compared the effect of various NSAIDs on their function. We found that osteochondrogenic differentiation of COX2-expressing mouse SSCs was impaired by NSAID treatment. In contrast, human SSCs (hSSC) downregulated COX2 expression during differentiation and showed impaired osteogenic capacity if COX2 was lentivirally overexpressed. Accordingly, short- and long-term treatment of hSSCs with non-selective and selective COX2 inhibitors did not affect colony forming ability, chondrogenic, and osteogenic differentiation potential in vitro. When hSSCs were transplanted ectopically into NSG mice treated with Indomethacin, graft mineralization was unaltered compared to vehicle injected mice. Thus, our results might contribute to understanding species-specific differences in NSAID sensitivity during fracture healing and support emerging clinical data which conflicts with other earlier observations that NSAID administration for post-operative analgesia for treatment of bone fractures are unsafe for patients.
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Affiliation(s)
- L. Henry Goodnough
- Department of Orthopaedic Surgery, Stanford Hospitals and Clinics, Stanford, CA, United States
| | - Thomas H. Ambrosi
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, United States
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, United States
| | - Holly M. Steininger
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, United States
| | - M. Gohazrua K. Butler
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, United States
| | - Malachia Y. Hoover
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, United States
| | - HyeRan Choo
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, United States
| | | | - Michael J. Bellino
- Department of Orthopaedic Surgery, Stanford Hospitals and Clinics, Stanford, CA, United States
| | - Julius A. Bishop
- Department of Orthopaedic Surgery, Stanford Hospitals and Clinics, Stanford, CA, United States
| | - Michael J. Gardner
- Department of Orthopaedic Surgery, Stanford Hospitals and Clinics, Stanford, CA, United States
| | - Charles K. F. Chan
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, United States
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, United States
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Torres P, Anerillas C, Ramírez-Núñez O, Fernàndez A, Encinas M, Povedano M, Andrés-Benito P, Ferrer I, Ayala V, Pamplona R, Portero-Otín M. The motor neuron disease mouse model hSOD1-G93A shows a non-canonical profile of senescence biomarkers. Dis Model Mech 2022; 15:276182. [PMID: 35916061 PMCID: PMC9459393 DOI: 10.1242/dmm.049059] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 07/26/2022] [Indexed: 11/20/2022] Open
Abstract
To evaluate senescence mechanisms, including senescence-associated secretory phenotype (SASP), in the motor-neuron disease model hSOD1-G93A, we quantified the expression of p16 and p21 and the senescence-associated β galactosidase (SA-β-gal) in nervous tissue. As SASP markers, we measured the mRNA levels of Il1a, Il6, Ifna, and Ifnb. Furthermore, we explored if an alteration of alternative splicing is associated with senescence by measuring the Adipor2 cryptic exon inclusion levels, a specific splicing variant repressed by TAR-DNA binding of 43 kDa (Tdp-43). Transgenic mice show an atypical senescence profile with high p16 and p21 mRNA and protein in glia, without the canonical increase in SA-β-gal activity. Consistent with SASP, there is an increase in Il1a and Il6 expression, associated with increased TNFR and M-CSF protein levels, with females being partially protected. TDP-43 splicing activity is compromised in this model. Senolytic drug Navitoclax does not alter the present 'model's disease progression. This lack of effect is reproduced in vitro, in contrast with Dasatinib and quercetin, which diminish p16 and p21. Our findings show a non-canonical profile of senescence biomarkers in the model hSOD1-G93A.
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Affiliation(s)
- Pascual Torres
- Metabolic Pathophysiology Research Group, Department of Experimental Medicine, University of Lleida-IRBLleida, Lleida, Spain
| | - Carlos Anerillas
- Oncogenic Signalling and Development, Department of Experimental Medicine, University of Lleida-IRBLleida, Lleida, Spain
| | - Omar Ramírez-Núñez
- Metabolic Pathophysiology Research Group, Department of Experimental Medicine, University of Lleida-IRBLleida, Lleida, Spain
| | - Anna Fernàndez
- Metabolic Pathophysiology Research Group, Department of Experimental Medicine, University of Lleida-IRBLleida, Lleida, Spain
| | - Mario Encinas
- Oncogenic Signalling and Development, Department of Experimental Medicine, University of Lleida-IRBLleida, Lleida, Spain
| | - Mònica Povedano
- Functional Unit of Amyotrophic Lateral Sclerosis (UFELA), Service of Neurology, Bellvitge University Hospital, Hospitalet de Llobregat, Spain
| | - Pol Andrés-Benito
- Department of Pathology and Experimental Therapeutics, University of Barcelona, Hospitalet de Llobregat, Spain
| | - Isidre Ferrer
- Department of Pathology and Experimental Therapeutics, University of Barcelona, Hospitalet de Llobregat, Spain.,Biomedical Network Research Center on Neurodegenerative Diseases (CIBERNED), Institute Carlos III, Hospitalet de Llobregat, Spain
| | - Victòria Ayala
- Metabolic Pathophysiology Research Group, Department of Experimental Medicine, University of Lleida-IRBLleida, Lleida, Spain
| | - Reinald Pamplona
- Metabolic Pathophysiology Research Group, Department of Experimental Medicine, University of Lleida-IRBLleida, Lleida, Spain
| | - Manuel Portero-Otín
- Metabolic Pathophysiology Research Group, Department of Experimental Medicine, University of Lleida-IRBLleida, Lleida, Spain
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Bone morphogenetic protein 4 rescues the bone regenerative potential of old muscle-derived stem cells via regulation of cell cycle inhibitors. Stem Cell Res Ther 2022; 13:385. [PMID: 35907860 PMCID: PMC9338549 DOI: 10.1186/s13287-022-03047-z] [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: 03/23/2022] [Accepted: 07/11/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Bone morphogenetic protein 4 (BMP4) promotes the osteogenic differentiation and the bone regenerative potential of muscle-derived stem cells (MDSCs). BMP4 also promotes the self-renewal of both embryonic and somatic stem cells; however, BMP4 signaling activity significantly decreases with age. Cyclin-dependent kinase inhibitors P16INK4A (P16) and P18INK4C (P18) induce early G1-phase cell cycle blockade by targeting cyclin-dependent kinase 4/6. It is still unclear if BMP4 affects the bone regenerative potential of old MDSCs through regulation of P16 and P18 expression. METHODS Young and old MDSCs were isolated from 3 week (young) and 2-year-old (old) mice. In vitro cell proliferation and multipotent differentiation were performed for young and old MDSCs both before and after BMP4/GFP transduction. Cell cycle genes were analyzed using Q-PCR. The bone regenerative potential of young and old MDSCs transduced with BMP4/GFP were compared using Micro-CT and histological analysis. The bone regenerative potential of young and old MDSCs was also compared between single and double transduction (higher BMP4 levels expression). The cell proliferation, mitochondrial function and osteogenic differentiation was also compared in vitro between cells that have been transduced with BMP4GFP (single and double transduction). The correlation of bone regeneration capacity of young and old MDSCs with P16 and P18 expression was further evaluated at 10 days after cell transplantation using histology and western blot analysis. RESULTS Old murine MDSCs (MDSCs) exhibit reduced proliferation and multi-lineage differentiation potential with or without BMP4 stimulation, when compared to young murine MDSCs. Old MDSCs express significantly higher P16 and lower P18, with more cells in the G0/1 phase and fewer cells in the G2/M phase, compared to young MDSCs. Old MDSCs retrovirally transduced to express BMP4 regenerated less bone in a critical size skull defect in CD-1 nude mice when compared to young retrovirally transduced MDSCs expressing similar BMP4 levels and contribute less to the new regenerated new bone. Importantly, both young and old MDSCs can regenerate more bone when BMP4 expression levels are increased by double-transduction with the retroviral-BMP4/GFP. However, the bone regeneration enhancement with elevated BMP4 was more profound in old MDSCs (400% at 2 weeks) compared to young MDSCs (200%). Accordingly, P18 is upregulated while P16 is downregulated after BMP4 transduction. Double transduction did not further increase cell proliferation nor mitochondrial function but did significantly increase Osx expression in both young and old MDSCs. Old MDSCs had even significant higher Osx levels as compared to young MDSCs following double transduction, while a similar Alp expression was observed between young and old MDSCs after double transduction. In addition, at 10 days after cell transplantation, old MDSCs having undergone double transduction regenerated bone more rapidly as showed by Alcian blue and Von Kossa staining. Western blot assays demonstrated that old MDSCs after retro-BMP4/GFP double transduction have significantly lower P18 expression levels when compared to young BMP4-transduced MDSCs. In addition, P18 expression was slightly increased in old MDSCs after double transduction when compared to single transduction. P16 expression was not detectable for both young and two old BMP4/GFP transduced MDSCs groups. CONCLUSIONS In summary, BMP4 can offset the adverse effect of aging on the osteogenic differentiation and the bone regenerative potential of old MDSCs via up-regulation of P18 and down-regulation P16 expression.
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Weng Y, Wang H, Wu D, Xu S, Chen X, Huang J, Feng Y, Li L, Wang Z. A novel lineage of osteoprogenitor cells with dual epithelial and mesenchymal properties govern maxillofacial bone homeostasis and regeneration after MSFL. Cell Res 2022; 32:814-830. [PMID: 35821090 PMCID: PMC9436969 DOI: 10.1038/s41422-022-00687-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 06/10/2022] [Indexed: 12/12/2022] Open
Abstract
Bone regeneration originates from proliferation and differentiation of osteoprogenitors via either endochondral or intramembranous ossification; and the regeneration capacities decline with age and estrogen loss. Maxillary sinus floor lifting (MSFL) is a commonly used surgical procedure for guiding bone regeneration in maxilla. Radiographic analysis of 1210 clinical cases of maxilla bone regeneration after MSFL revealed that the intrasinus osteogenic efficacy was independent of age and gender, however; and this might be related to the Schneiderian membrane that lines the sinus cavity. In view of the particularity of this biological process, our present study aimed to elucidate the underlying mechanism of MSFL-induced bone regeneration. We first established a murine model to simulate the clinical MSFL. By single-cell RNA-sequencing and flow cytometry-based bulk RNA-sequencing, we identified a novel Krt14+Ctsk+ subset of cells that display both epithelial and mesenchymal properties and the transcriptomic feature of osteoprogenitors. Dual recombinases-mediated lineage tracing and loss-of-function analyses showed that these Krt14+Ctsk+ progenitors contribute to both MSFL-induced osteogenesis and physiological bone homeostasis by differentiating into Krt14-Ctsk+ descendants which show robust osteogenic capacity. In addition, we detected a similar population of Krt14+Ctsk+ cells in human samples of Schneiderian membrane, which show a highly similar osteogenic potential and transcriptomic feature to the corresponding cells in mice. The identification of this Krt14+Ctsk+ population, featured by osteoprogenitor characteristics and dual epithelial-mesenchymal properties, provides new insight into the understanding of bone regeneration and may open more possibilities for clinical applications.
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Affiliation(s)
- Yuteng Weng
- Department of Oral Implantology & Department of Oral and Maxillofacial Surgery, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Haicheng Wang
- Department of Oral Implantology & Department of Oral and Maxillofacial Surgery, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Di Wu
- Department of Oral Implantology & Department of Oral and Maxillofacial Surgery, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Shuyu Xu
- Department of Oral Implantology & Department of Oral and Maxillofacial Surgery, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Xiaofan Chen
- Department of Oral Implantology & Department of Oral and Maxillofacial Surgery, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Jie Huang
- Department of Oral Implantology & Department of Oral and Maxillofacial Surgery, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Yanhuizhi Feng
- Department of Oral Implantology & Department of Oral and Maxillofacial Surgery, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Lin Li
- Department of Oral Implantology & Department of Oral and Maxillofacial Surgery, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Zuolin Wang
- Department of Oral Implantology & Department of Oral and Maxillofacial Surgery, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China.
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Wang B, Li G, Zhu Q, Liu W, Ke W, Hua W, Zhou Y, Zeng X, Sun X, Wen Z, Yang C, Pan Y. Bone Repairment via Mechanosensation of Piezo1 Using Wearable Pulsed Triboelectric Nanogenerator. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2201056. [PMID: 35652171 DOI: 10.1002/smll.202201056] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 05/15/2022] [Indexed: 06/15/2023]
Abstract
Bone repair in real time is a challenging medical issue for elderly patients; this is mainly because aged bone marrow mesenchymal stem cells (BMSCs) possess limited osteogenesis potential and repair capacity. In this study, triboelectric stimulation technology is used to achieve bone repair via mechanosensation of Piezo1 by fabricating a wearable pulsed triboelectric nanogenerator (WP-TENG) driven by human body movement. A peak value of 30 µA has the optimal effects to rejuvenate aged BMSCs, enhance their osteogenic differentiation, and promote human umbilical vein endothelial cell tube formation. Further, previous studies demonstrate that triboelectric stimulation of a WP-TENG can reinforce osteogenesis of BMSCs and promote the angiogenesis of human umbilical vein endothelial cells (HUVECs). Mechanistically, aged BMSCs are rejuvenated by triboelectric stimulation via the mechanosensitive ion channel Piezo1. Thus, the osteogenesis potential of BMSCs is enhanced and the tube formation capacity of HUVECs is improved, which is further confirmed by augmented bone repair and regeneration in in vivo investigations. This study provides a potential signal transduction mechanism for rejuvenating aged BMSCs and a theoretical basis for bone regeneration using triboelectric stimulation generated by a WP-TENG.
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Affiliation(s)
- Bingjin Wang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Gaocai Li
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Qianqian Zhu
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, China
| | - Weifang Liu
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Wencan Ke
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Wenbin Hua
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yiming Zhou
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Xianlin Zeng
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Xuhui Sun
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, China
| | - Zhen Wen
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, China
| | - Cao Yang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yue Pan
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
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Zhou C, Wang C, Xu K, Niu Z, Zou S, Zhang D, Qian Z, Liao J, Xie J. Hydrogel platform with tunable stiffness based on magnetic nanoparticles cross-linked GelMA for cartilage regeneration and its intrinsic biomechanism. Bioact Mater 2022; 25:615-628. [PMID: 37056264 PMCID: PMC10087085 DOI: 10.1016/j.bioactmat.2022.07.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Revised: 07/11/2022] [Accepted: 07/11/2022] [Indexed: 11/02/2022] Open
Abstract
Cartilage injury affects numerous individuals, but the efficient repair of damaged cartilage is still a problem in clinic. Hydrogel is a potent scaffold candidate for tissue regeneration, but it remains a big challenge to improve its mechanical property and figure out the interaction of chondrocytes and stiffness. Herein, a novel hybrid hydrogel with tunable stiffness was fabricated based on methacrylated gelatin (GelMA) and iron oxide nanoparticles (Fe2O3) through chemical bonding. The stiffness of Fe2O3/GelMA hybrid hydrogel was controlled by adjusting the concentration of magnetic nanoparticles. The hydrogel platform with tunable stiffness modulated its cellular properties including cell morphology, microfilaments and Young's modulus of chondrocytes. Interestingly, Fe2O3/GelMA hybrid hydrogel promoted oxidative phosphorylation of mitochondria and facilitated catabolism of lipids in chondrocytes. As a result, more ATP and metabolic materials generated for cellular physiological activities and organelle component replacements in hybrid hydrogel group compared to pure GelMA hydrogel. Furthermore, implantation of Fe2O3/GelMA hybrid hydrogel in the cartilage defect rat model verified its remodeling potential. This study provides a deep understanding of the bio-mechanism of Fe2O3/GelMA hybrid hydrogel interaction with chondrocytes and indicates the hydrogel platform for further application in tissue engineering.
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Sladitschek-Martens HL, Guarnieri A, Brumana G, Zanconato F, Battilana G, Xiccato RL, Panciera T, Forcato M, Bicciato S, Guzzardo V, Fassan M, Ulliana L, Gandin A, Tripodo C, Foiani M, Brusatin G, Cordenonsi M, Piccolo S. YAP/TAZ activity in stromal cells prevents ageing by controlling cGAS-STING. Nature 2022; 607:790-798. [PMID: 35768505 PMCID: PMC7613988 DOI: 10.1038/s41586-022-04924-6] [Citation(s) in RCA: 94] [Impact Index Per Article: 47.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 06/01/2022] [Indexed: 02/06/2023]
Abstract
Ageing is intimately connected to the induction of cell senescence1,2, but why this is so remains poorly understood. A key challenge is the identification of pathways that normally suppress senescence, are lost during ageing and are functionally relevant to oppose ageing3. Here we connected the structural and functional decline of ageing tissues to attenuated function of the master effectors of cellular mechanosignalling YAP and TAZ. YAP/TAZ activity declines during physiological ageing in stromal cells, and mimicking such decline through genetic inactivation of YAP/TAZ in these cells leads to accelerated ageing. Conversely, sustaining YAP function rejuvenates old cells and opposes the emergence of ageing-related traits associated with either physiological ageing or accelerated ageing triggered by a mechano-defective extracellular matrix. Ageing traits induced by inactivation of YAP/TAZ are preceded by induction of tissue senescence. This occurs because YAP/TAZ mechanotransduction suppresses cGAS-STING signalling, to the extent that inhibition of STING prevents tissue senescence and premature ageing-related tissue degeneration after YAP/TAZ inactivation. Mechanistically, YAP/TAZ-mediated control of cGAS-STING signalling relies on the unexpected role of YAP/TAZ in preserving nuclear envelope integrity, at least in part through direct transcriptional regulation of lamin B1 and ACTR2, the latter of which is involved in building the peri-nuclear actin cap. The findings demonstrate that declining YAP/TAZ mechanotransduction drives ageing by unleashing cGAS-STING signalling, a pillar of innate immunity. Thus, sustaining YAP/TAZ mechanosignalling or inhibiting STING may represent promising approaches for limiting senescence-associated inflammation and improving healthy ageing.
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Affiliation(s)
| | | | - Giulia Brumana
- Department of Molecular Medicine, University of Padua, Padua, Italy
| | | | - Giusy Battilana
- Department of Molecular Medicine, University of Padua, Padua, Italy
| | | | - Tito Panciera
- Department of Molecular Medicine, University of Padua, Padua, Italy
| | - Mattia Forcato
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Silvio Bicciato
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | | | - Matteo Fassan
- Department of Medicine, University of Padua, Padua, Italy
| | - Lorenzo Ulliana
- Department of Industrial Engineering, University of Padua, Padua, Italy
| | - Alessandro Gandin
- Department of Industrial Engineering, University of Padua, Padua, Italy
| | - Claudio Tripodo
- Department of Health Sciences Unit, Human Pathology Section, University of Palermo, Palermo, Italy
- IFOM ETS, the AIRC Institute of Molecular Oncology, Milan, Italy
| | - Marco Foiani
- IFOM ETS, the AIRC Institute of Molecular Oncology, Milan, Italy
- University of Milan, Milan, Italy
| | - Giovanna Brusatin
- Department of Industrial Engineering, University of Padua, Padua, Italy
| | | | - Stefano Piccolo
- Department of Molecular Medicine, University of Padua, Padua, Italy.
- IFOM ETS, the AIRC Institute of Molecular Oncology, Milan, Italy.
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Keren A, Bertolini M, Keren Y, Ullmann Y, Paus R, Gilhar A. Human organ rejuvenation by VEGF-A: Lessons from the skin. SCIENCE ADVANCES 2022; 8:eabm6756. [PMID: 35749494 PMCID: PMC9232104 DOI: 10.1126/sciadv.abm6756] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Transplanting aged human skin onto young SCID/beige mice morphologically rejuvenates the xenotransplants. This is accompanied by angiogenesis, epidermal repigmentation, and substantial improvements in key aging-associated biomarkers, including ß-galactosidase, p16ink4a, SIRT1, PGC1α, collagen 17A, and MMP1. Angiogenesis- and hypoxia-related pathways, namely, vascular endothelial growth factor A (VEGF-A) and HIF1A, are most up-regulated in rejuvenated human skin. This rejuvenation cascade, which can be prevented by VEGF-A-neutralizing antibodies, appears to be initiated by murine VEGF-A, which then up-regulates VEGF-A expression/secretion within aged human skin. While intradermally injected VEGF-loaded nanoparticles suffice to induce a molecular rejuvenation signature in aged human skin on old mice, VEGF-A treatment improves key aging parameters also in isolated, organ-cultured aged human skin, i.e., in the absence of functional skin vasculature, neural, or murine host inputs. This identifies VEGF-A as the first pharmacologically pliable master pathway for human organ rejuvenation in vivo and demonstrates the potential of our humanized mouse model for clinically relevant aging research.
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Affiliation(s)
- Aviad Keren
- Skin Research Laboratory, Rappaport Faculty of Medicine, Technion – Israel Institute of Technology, Haifa, Israel
| | - Marta Bertolini
- Monasterium Laboratory, Skin and Hair Research Solutions GmbH, Münster, Germany
| | - Yaniv Keren
- Division of Orthopedic Surgery, Rambam Health Care Campus, Haifa, Israel
| | - Yehuda Ullmann
- Skin Research Laboratory, Rappaport Faculty of Medicine, Technion – Israel Institute of Technology, Haifa, Israel
| | - Ralf Paus
- Monasterium Laboratory, Skin and Hair Research Solutions GmbH, Münster, Germany
- Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
- CUTANEON–Skin & Hair Innovations, Hamburg, Germany
- Corresponding author. (A.G.); (R.P.)
| | - Amos Gilhar
- Skin Research Laboratory, Rappaport Faculty of Medicine, Technion – Israel Institute of Technology, Haifa, Israel
- Corresponding author. (A.G.); (R.P.)
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Lin X, Zhang H, Liu J, Wu CL, McDavid A, Boyce BF, Xing L. Aged Callus Skeletal Stem/Progenitor Cells Contain an Inflammatory Osteogenic Population With Increased IRF and NF-κB Pathways and Reduced Osteogenic Potential. Front Mol Biosci 2022; 9:806528. [PMID: 35755815 PMCID: PMC9218815 DOI: 10.3389/fmolb.2022.806528] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 04/29/2022] [Indexed: 11/15/2022] Open
Abstract
Skeletal stem/progenitor cells (SSPCs) are critical for fracture repair by providing osteo-chondro precursors in the callus, which is impaired in aging. However, the molecular signatures of callus SSPCs during aging are not known. Herein, we performed single-cell RNA sequencing on 11,957 CD45-CD31-Ter119- SSPCs isolated from young and aged mouse calluses. Combining unsupervised clustering, putative makers, and DEGs/pathway analyses, major SSPC clusters were annotated as osteogenic, proliferating, and adipogenic populations. The proliferating cluster had a differentiating potential into osteogenic and adipogenic lineages by trajectory analysis. The osteoblastic/adipogenic/proliferating potential of individual clusters was further evidenced by elevated expression of genes related to osteoblasts, adipocytes, or proliferation. The osteogenic cluster was sub-clustered into house-keeping and inflammatory osteogenic populations that were decreased and increased in aged callus, respectively. The majority of master regulators for the inflammatory osteogenic population belong to IRF and NF-κB families, which was confirmed by immunostaining, RT-qPCR, and Western blot analysis. Furthermore, cells in the inflammatory osteogenic sub-cluster had reduced osteoblast differentiation capacity. In conclusion, we identified 3 major clusters in callus SSPCs, confirming their heterogeneity and, importantly, increased IRF/NF-κB-mediated inflammatory osteogenic population with decreased osteogenic potential in aged cells.
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Affiliation(s)
- X. Lin
- Department of Pathology and Laboratory Medicine, Rochester, NY, United States
| | - H. Zhang
- Department of Pathology and Laboratory Medicine, Rochester, NY, United States
| | - J. Liu
- Department of Pathology and Laboratory Medicine, Rochester, NY, United States
| | - C L. Wu
- Center for Musculoskeletal Research, Rochester, NY, United States
| | - A. McDavid
- Biostatistics and Computational Biology, University of Rochester Medical Center, Rochester, NY, United States
| | - B. F. Boyce
- Department of Pathology and Laboratory Medicine, Rochester, NY, United States
- Center for Musculoskeletal Research, Rochester, NY, United States
| | - L. Xing
- Department of Pathology and Laboratory Medicine, Rochester, NY, United States
- Center for Musculoskeletal Research, Rochester, NY, United States
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130
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Sautchuk R, Kalicharan BH, Escalera-Rivera K, Jonason JH, Porter GA, Awad HA, Eliseev RA. Transcriptional regulation of cyclophilin D by BMP/Smad signaling and its role in osteogenic differentiation. eLife 2022; 11:e75023. [PMID: 35635445 PMCID: PMC9191891 DOI: 10.7554/elife.75023] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 05/27/2022] [Indexed: 11/26/2022] Open
Abstract
Cyclophilin D (CypD) promotes opening of the mitochondrial permeability transition pore (MPTP) which plays a key role in both cell physiology and pathology. It is, therefore, beneficial for cells to tightly regulate CypD and MPTP but little is known about such regulation. We have reported before that CypD is downregulated and MPTP deactivated during differentiation in various tissues. Herein, we identify BMP/Smad signaling, a major driver of differentiation, as a transcriptional regulator of the CypD gene, Ppif. Using osteogenic induction of mesenchymal lineage cells as a BMP/Smad activation-dependent differentiation model, we show that CypD is in fact transcriptionally repressed during this process. The importance of such CypD downregulation is evidenced by the negative effect of CypD 'rescue' via gain-of-function on osteogenesis both in vitro and in a mouse model. In sum, we characterized BMP/Smad signaling as a regulator of CypD expression and elucidated the role of CypD downregulation during cell differentiation.
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Affiliation(s)
- Rubens Sautchuk
- Center for Musculoskeletal Research, University of RochesterRochesterUnited States
| | - Brianna H Kalicharan
- Center for Musculoskeletal Research, University of RochesterRochesterUnited States
| | | | - Jennifer H Jonason
- Center for Musculoskeletal Research, University of RochesterRochesterUnited States
- Department of Pathology, University of RochesterRochesterUnited States
| | - George A Porter
- Department of Pediatrics, Division of Cardiology, University of RochesterRochesterUnited States
| | - Hani A Awad
- Center for Musculoskeletal Research, University of RochesterRochesterUnited States
- Department of Biomedical Engineering, University of RochesterRochesterUnited States
| | - Roman A Eliseev
- Center for Musculoskeletal Research, University of RochesterRochesterUnited States
- Department of Pathology, University of RochesterRochesterUnited States
- Department of Pharmacology & Physiology, University of RochesterRochesterUnited States
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131
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Yan F, Li Z, Powell CA, Wang X. Forward single-cell sequencing into clinical application: Understanding of ageing and rejuvenation from clinical observation to single-cell solution. Clin Transl Med 2022; 12:e827. [PMID: 35593205 PMCID: PMC9121316 DOI: 10.1002/ctm2.827] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 04/05/2022] [Indexed: 12/20/2022] Open
Affiliation(s)
- Furong Yan
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Fudan University Shanghai Medical College, Shanghai, China.,Shanghai Institute of Clinical Bioinformatics, Shanghai Engineering Research for AI Technology for Cardiopulmonary Diseases, Shanghai, China
| | - Zhangping Li
- The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's Hospital, Quzhou, China
| | - Charles A Powell
- Division of Pulmonary, Critical Care and Sleep Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Xiangdong Wang
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Fudan University Shanghai Medical College, Shanghai, China.,Shanghai Institute of Clinical Bioinformatics, Shanghai Engineering Research for AI Technology for Cardiopulmonary Diseases, Shanghai, China
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132
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Lyu Y, Ge Y. Toward Elucidating Epigenetic and Metabolic Regulation of Stem Cell Lineage Plasticity in Skin Aging. Front Cell Dev Biol 2022; 10:903904. [PMID: 35663405 PMCID: PMC9160930 DOI: 10.3389/fcell.2022.903904] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 04/21/2022] [Indexed: 11/13/2022] Open
Abstract
Skin is the largest organ in human body, harboring a plethora of cell types and serving as the organismal barrier. Skin aging such as wrinkling and hair graying is graphically pronounced, and the molecular mechanisms behind these phenotypic manifestations are beginning to unfold. As in many other organs and tissues, epigenetic and metabolic deregulations have emerged as key aging drivers. Particularly in the context of the skin epithelium, the epigenome and metabolome coordinately shape lineage plasticity and orchestrate stem cell function during aging. Our review discusses recent studies that proposed molecular mechanisms that drive the degeneration of hair follicles, a major appendage of the skin. By focusing on skin while comparing it to model organisms and adult stem cells of other tissues, we summarize literature on genotoxic stress, nutritional sensing, metabolic rewiring, mitochondrial activity, and epigenetic regulations of stem cell plasticity. Finally, we speculate about the rejuvenation potential of rate-limiting upstream signals during aging and the dominant role of the tissue microenvironment in dictating aged epithelial stem cell function.
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Affiliation(s)
| | - Yejing Ge
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
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133
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Yang C, Pang Y, Huang Y, Ye F, Chen X, Gao Y, Zhang C, Yao L, Gao J. Single-cell transcriptomics identifies premature aging features of TERC-deficient mouse brain and bone marrow. GeroScience 2022; 44:2139-2155. [PMID: 35545739 DOI: 10.1007/s11357-022-00578-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 04/22/2022] [Indexed: 11/29/2022] Open
Abstract
Aging is a progressive loss of physiological function and increased susceptibility to major pathologies. Degenerative diseases in both brain and bone including Alzheimer disease (AD) and osteoporosis are common in aging groups. TERC is RNA component of telomerase, and its deficiency accelerates aging-related phenotypes including impaired life span, organ failure, bone loss, and brain dysfunction. In this study, we investigated the traits of bone marrow-brain cross-tissue communications in young mice, natural aging mice, and premature aging (TERC deficient, TERC-KO) mice by single-cell transcriptome sequencing. Differentially expressed gene analysis of brain as well as bone marrow between premature aging mouse and young mouse demonstrated aging-related inflammatory response and suppression of neuron development. Further analysis of senescence-associated secretory phenotype (SASP) landscape indicated that TERC-KO perturbation was enriched in oligodendrocyte progenitor cells (OPCs) and hematopoietic stem and progenitor cells (HSPC). Series of inflammatory associated myeloid cells was activated in premature aging mice brain and bone marrow. Cross-tissue comparison of TERC-KO mice brain and bone marrow illustrated obvious ligand-receptor communications between brain glia cells, macrophages, and bone marrow myeloid cells in premature aging-induced inflammation. Enrichment of co-regulation modules between brain and bone marrow identified premature aging response genes such as Dusp1 and Ifitm3. Our study provides a rich resource for understanding premature aging-associated perturbation in brain and bone marrow and supporting myeloid cells and endothelial cells as promising therapy targeting for age-related brain-bone diseases.
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Affiliation(s)
- Chunying Yang
- Department of Neurology, The Affiliated Hospital of Medical School of Ningbo University, Ningbo, 315040, Zhejiang, China
| | - Yidan Pang
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Yigang Huang
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Fang Ye
- Center for Stem Cell and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Xiaoyi Chen
- Ningbo Institute of Life and Health Industry, University of Chinese Academy of Sciences, Ningbo, 315000, Zhejiang, China
| | - Youshui Gao
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China.
| | - Changqing Zhang
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China.
| | - Lufeng Yao
- Department of Orthopaedic Surgery, Ningbo No. 6 Hospital, Ningbo, 315040, Zhejiang, China.
| | - Junjie Gao
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China. .,Institute of Microsurgery on Extremities, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China.
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134
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Wang T. Searching for the link between inflammaging and sarcopenia. Ageing Res Rev 2022; 77:101611. [PMID: 35307560 DOI: 10.1016/j.arr.2022.101611] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 02/14/2022] [Accepted: 03/15/2022] [Indexed: 12/17/2022]
Affiliation(s)
- Tiantian Wang
- Institute of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China; Department of Rehabilitation Medicine, Key Laboratory of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China.
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135
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Chen A, Li X, Zhao J, Zhou J, Xie C, Chen H, Wang Q, Wang R, Miao D, Li J, Jin J. Chronic alcohol reduces bone mass through inhibiting proliferation and promoting aging of endothelial cells in type-H vessels. Stem Cells Dev 2022; 31:541-554. [DOI: 10.1089/scd.2021.0337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Ao Chen
- Nanjing Medical University, 12461, Research Centre for Bone and Stem Cells, Department of Human Anatomy; Key Laboratory for Aging & Disease; The State Key Laboratory of Reproductive Medicine, Nanjing, Jiangsu, China
| | - Xiaoting Li
- Nanjing Medical University, 12461, Department of Nutrition and Food Safety, School of Public Health, Nanjing, Jiangsu, China
| | - Jingyu Zhao
- Nanjing Medical University, 12461, Research Centre for Bone and Stem Cells, Department of Human Anatomy; Key Laboratory for Aging & Disease; The State Key Laboratory of Reproductive Medicine, Nanjing, Jiangsu, China
| | - Jiawen Zhou
- Nanjing Medical University, 12461, Research Centre for Bone and Stem Cells, Department of Human Anatomy; Key Laboratory for Aging & Disease; The State Key Laboratory of Reproductive Medicine, Nanjing, Jiangsu, China
| | - Chunfeng Xie
- Nanjing Medical University, 12461, Department of Nutrition and Food Safety, School of Public Health, Nanjing, Jiangsu, China
| | - Haiyun Chen
- Nanjing Medical University, 12461, Anti-aging Research Laboratory, Friendship Plastic Surgery Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Qiuyi Wang
- Nanjing Medical University, 12461, Research Centre for Bone and Stem Cells, Department of Human Anatomy; Key Laboratory for Aging & Disease; The State Key Laboratory of Reproductive Medicine, Nanjing, Jiangsu, China
| | - Rong Wang
- Nanjing Medical University, 12461, Research Centre for Bone and Stem Cells, Department of Human Anatomy; Key Laboratory for Aging & Disease; The State Key Laboratory of Reproductive Medicine, Nanjing, Jiangsu, China
| | - Dengshun Miao
- Nanjing Medical University, Nanjing, Jiangsu, China, 210029, ,
| | - Jie Li
- Xuzhou Medical University, 38044, Department of Orthopaedics, Xuzhou Central Hospital; The Xuzhou Clinical School of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Jianliang Jin
- Nanjing Medical University, 12461, Nanjing, China, 211166
- No.101,Longmian Avenue,Jiangning DistrictChina
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136
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Yahara Y, Nguyen T, Ishikawa K, Kamei K, Alman BA. The origins and roles of osteoclasts in bone development, homeostasis and repair. Development 2022; 149:275249. [PMID: 35502779 PMCID: PMC9124578 DOI: 10.1242/dev.199908] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The mechanisms underlying bone development, repair and regeneration are reliant on the interplay and communication between osteoclasts and other surrounding cells. Osteoclasts are multinucleated monocyte lineage cells with resorptive abilities, forming the bone marrow cavity during development. This marrow cavity, essential to hematopoiesis and osteoclast-osteoblast interactions, provides a setting to investigate the origin of osteoclasts and their multi-faceted roles. This Review examines recent developments in the embryonic understanding of osteoclast origin, as well as interactions within the immune environment to regulate normal and pathological bone development, homeostasis and repair.
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Affiliation(s)
- Yasuhito Yahara
- Department of Orthopaedic Surgery, Duke University School of Medicine, Durham, NC 27710, United States.,Department of Molecular and Medical Pharmacology, Faculty of Medicine, University of Toyama, Toyama, 930-0194, Japan.,Department of Orthopaedic Surgery, Faculty of Medicine, University of Toyama, Toyama, 930-0194, Japan
| | - Tuyet Nguyen
- Department of Orthopaedic Surgery, Duke University School of Medicine, Durham, NC 27710, United States.,Department of Cell Biology, Duke University School of Medicine, Durham, NC 27710, United States
| | - Koji Ishikawa
- Department of Orthopaedic Surgery, Duke University School of Medicine, Durham, NC 27710, United States.,Department of Orthopaedic Surgery, Showa University School of Medicine, Tokyo, 142-8666, Japan
| | - Katsuhiko Kamei
- Department of Orthopaedic Surgery, Faculty of Medicine, University of Toyama, Toyama, 930-0194, Japan
| | - Benjamin A Alman
- Department of Orthopaedic Surgery, Duke University School of Medicine, Durham, NC 27710, United States.,Department of Cell Biology, Duke University School of Medicine, Durham, NC 27710, United States
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137
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Mato-Basalo R, Lucio-Gallego S, Alarcón-Veleiro C, Sacristán-Santos M, Quintana MDPM, Morente-López M, de Toro FJ, Silva-Fernández L, González-Rodríguez A, Arufe MC, Labora JAF. Action Mechanisms of Small Extracellular Vesicles in Inflammaging. Life (Basel) 2022; 12:life12040546. [PMID: 35455036 PMCID: PMC9028066 DOI: 10.3390/life12040546] [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: 03/14/2022] [Revised: 03/31/2022] [Accepted: 04/01/2022] [Indexed: 02/05/2023] Open
Abstract
The accumulation process of proinflammatory components in the body due to aging influences intercellular communication and is known as inflammaging. This biological mechanism relates the development of inflammation to the aging process. Recently, it has been reported that small extracellular vesicles (sEVs) are mediators in the transmission of paracrine senescence involved in inflammatory aging. For this reason, their components, as well as mechanisms of action of sEVs, are relevant to develop a new therapy called senodrugs (senolytics and senomorphic) that regulates the intercellular communication of inflammaging. In this review, we include the most recent and relevant studies on the role of sEVs in the inflammatory aging process and in age-related diseases such as cancer and type 2 diabetes.
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138
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Arora D, Robey PG. Recent updates on the biological basis of heterogeneity in bone marrow stromal cells/skeletal stem cells. BIOMATERIALS TRANSLATIONAL 2022; 3:3-16. [PMID: 35837340 PMCID: PMC9255791 DOI: 10.12336/biomatertransl.2022.01.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 03/17/2022] [Accepted: 03/20/2022] [Indexed: 11/15/2022]
Abstract
Based on studies over the last several decades, the self-renewing skeletal lineages derived from bone marrow stroma could be an ideal source for skeletal tissue engineering. However, the markers for osteogenic precursors; i.e., bone marrowderived skeletal stem cells (SSCs), in association with other cells of the marrow stroma (bone marrow stromal cells, BMSCs) and their heterogeneous nature both in vivo and in vitro remain to be clarified. This review aims to highlight: i) the importance of distinguishing BMSCs/SSCs from other "mesenchymal stem/stromal cells", and ii) factors that are responsible for their heterogeneity, and how these factors impact on the differentiation potential of SSCs towards bone. The prospective role of SSC enrichment, their expansion and its impact on SSC phenotype is explored. Emphasis has also been given to emerging single cell RNA sequencing approaches in scrutinizing the unique population of SSCs within the BMSC population, along with their committed progeny. Understanding the factors involved in heterogeneity may help researchers to improvise their strategies to isolate, characterize and adopt best culture practices and source identification to develop standard operating protocols for developing reproducible stem cells grafts. However, more scientific understanding of the molecular basis of heterogeneity is warranted that may be obtained from the robust high-throughput functional transcriptomics of single cells or clonal populations.
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Affiliation(s)
- Deepika Arora
- National Institute of Dental and Craniofacial Research, National Institutes of Health, Department of Health and Human Services, Bethesda, MD, USA
- Biosystems and Biomaterials Division, National Institute of Standards and Technology, Department of Commerce, Gaithersburg, MD, USA
- Department of Biotechnology, School of Biological Engineering & Life Sciences, Shobhit Institute of Engineering & Technology (Deemed-to-be-University), Meerut, India
| | - Pamela Gehron Robey
- National Institute of Dental and Craniofacial Research, National Institutes of Health, Department of Health and Human Services, Bethesda, MD, USA
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139
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Watt SM. The long and winding road: homeostatic and disordered haematopoietic microenvironmental niches: a narrative review. BIOMATERIALS TRANSLATIONAL 2022; 3:31-54. [PMID: 35837343 PMCID: PMC9255786 DOI: 10.12336/biomatertransl.2022.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 03/05/2022] [Accepted: 03/10/2022] [Indexed: 11/18/2022]
Abstract
Haematopoietic microenvironmental niches have been described as the 'gatekeepers' for the blood and immune systems. These niches change during ontogeny, with the bone marrow becoming the predominant site of haematopoiesis in post-natal life under steady state conditions. To determine the structure and function of different haematopoietic microenvironmental niches, it is essential to clearly define specific haematopoietic stem and progenitor cell subsets during ontogeny and to understand their temporal appearance and anatomical positioning. A variety of haematopoietic and non-haematopoietic cells contribute to haematopoietic stem and progenitor cell niches. The latter is reported to include endothelial cells and mesenchymal stromal cells (MSCs), skeletal stem cells and/or C-X-C motif chemokine ligand 12-abundant-reticular cell populations, which form crucial components of these microenvironments under homeostatic conditions. Dysregulation or deterioration of such cells contributes to significant clinical disorders and diseases worldwide and is associated with the ageing process. A critical appraisal of these issues and of the roles of MSC/C-X-C motif chemokine ligand 12-abundant-reticular cells and the more recently identified skeletal stem cell subsets in bone marrow haematopoietic niche function under homeostatic conditions and during ageing will form the basis of this research review. In the context of haematopoiesis, clinical translation will deal with lessons learned from the vast experience garnered from the development and use of MSC therapies to treat graft versus host disease in the context of allogeneic haematopoietic transplants, the recent application of these MSC therapies to treating emerging and severe coronavirus disease 2019 (COVID-19) infections, and, given that skeletal stem cell ageing is one proposed driver for haematopoietic ageing, the potential contributions of these stem cells to haematopoiesis in healthy bone marrow and the benefits and challenges of using this knowledge for rejuvenating the age-compromised bone marrow haematopoietic niches and restoring haematopoiesis.
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Affiliation(s)
- Suzanne M. Watt
- Stem Cell Research, Nuffield Division of Clinical Laboratory Sciences, Radcliffe Department of Medicine, University of Oxford, Oxford, UK,Myeloma Research Laboratory, Adelaide Medical School, Faculty of Health and Medical Sciences, University of Adelaide, Adelaide, Australia,Cancer Program, Precision Medicine Theme, South Australian Health and Medical Research Institute, Adelaide, Australia,Corresponding author: Suzanne M. Watt., or
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140
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Watt SM, Hua P, Roberts I. Increasing Complexity of Molecular Landscapes in Human Hematopoietic Stem and Progenitor Cells during Development and Aging. Int J Mol Sci 2022; 23:ijms23073675. [PMID: 35409034 PMCID: PMC8999121 DOI: 10.3390/ijms23073675] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 03/21/2022] [Accepted: 03/23/2022] [Indexed: 02/05/2023] Open
Abstract
The past five decades have seen significant progress in our understanding of human hematopoiesis. This has in part been due to the unprecedented development of advanced technologies, which have allowed the identification and characterization of rare subsets of human hematopoietic stem and progenitor cells and their lineage trajectories from embryonic through to adult life. Additionally, surrogate in vitro and in vivo models, although not fully recapitulating human hematopoiesis, have spurred on these scientific advances. These approaches have heightened our knowledge of hematological disorders and diseases and have led to their improved diagnosis and therapies. Here, we review human hematopoiesis at each end of the age spectrum, during embryonic and fetal development and on aging, providing exemplars of recent progress in deciphering the increasingly complex cellular and molecular hematopoietic landscapes in health and disease. This review concludes by highlighting links between chronic inflammation and metabolic and epigenetic changes associated with aging and in the development of clonal hematopoiesis.
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Affiliation(s)
- Suzanne M. Watt
- Stem Cell Research, Nuffield Division of Clinical Laboratory Sciences, Radcliffe Department of Medicine, University of Oxford, Oxford OX3 9BQ, UK
- Myeloma Research Laboratory, Adelaide Medical School, Faculty of Health and Medical Sciences, University of Adelaide, North Terrace, Adelaide 5005, Australia
- Cancer Program, Precision Medicine Theme, South Australian Health and Medical Research Institute, Adelaide 5001, Australia
- Correspondence: or ; Tel.: +61-403-393-755
| | - Peng Hua
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing 210029, China;
| | - Irene Roberts
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, and NIHR Oxford Biomedical Research Centre Haematology Theme, Radcliffe Department of Medicine, University of Oxford, Oxford OX3 9DU, UK;
- Department of Paediatrics and NIHR Oxford Biomedical Research Centre Haematology Theme, University of Oxford, Oxford OX3 9DU, UK
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141
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Liang J, Wang J, Ji Y, Zhao Q, Han L, Miron R, Zhang Y. Identification of Dental Stem Cells Similar to Skeletal Stem Cells. J Dent Res 2022; 101:1092-1100. [DOI: 10.1177/00220345221084199] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Stem and progenitor cells play important roles in the development and maintenance of teeth and bone. Surface markers expressed in bone marrow–derived mesenchymal stem cells are also expressed in dental tissue–derived stem cells. Mouse skeletal stem cells (mSSCs, CD45−Ter119−Tie2−CD51+Thy−6C3−CD105−CD200+) and human skeletal stem cells (hSSCs, CD45−CD235a−TIE2−CD31−CD146−PDPN+CD73+CD164+) have been identified in bone and shown to play important roles in skeletal development and regeneration. However, it is unclear whether dental tissues also harbor mSSC or hSSC populations. Here, we employed rainbow tracers and found that clonal expansion occurred in mouse dental tissues similar to that in bone. We sorted the mSSC population from mouse periodontal ligament (mPDL) tissue and mouse dental pulp (mDP) tissue in the lower incisors by fluorescence-activated cell sorting (FACS). In addition, we demonstrated that mPDL-derived skeletal stem cells (mPDL-SSCs) and mDP-derived skeletal stem cells (mDP-SSCs) have similar clonogenic capacity, as well as cementogenic and odontogenic potential, but not adipogenic potential, similar to the characteristics of mSSCs. Moreover, we found that the dental tissue–derived mSSC population plays an important role in repairing clipped incisors. Importantly, we sorted the hSSC population from human periodontal ligament (hPDL) and human dental pulp (hDP) tissue in molars and identified its stem cell characteristics. Finally, hPDL-like and hDP-like structures were generated after transplanting hPDL-SSCs and hDP-SSCs beneath the renal capsules. In conclusion, we demonstrated that mouse and human PDL and DP tissues harbor dental stem cells similar to mSSCs and hSSCs, respectively, providing a precise stem cell population for the exploration of dental diseases.
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Affiliation(s)
- J.F. Liang
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine, Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - J. Wang
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine, Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Y.T. Ji
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine, Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Q. Zhao
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine, Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - L.T. Han
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine, Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - R.J. Miron
- Department of Periodontology, University of Bern, Bern, Switzerland
| | - Y.F. Zhang
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine, Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
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142
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Li F, Wu J, Li D, Hao L, Li Y, Yi D, Yeung KWK, Chen D, Lu WW, Pan H, Wong TM, Zhao X. Engineering stem cells to produce exosomes with enhanced bone regeneration effects: an alternative strategy for gene therapy. J Nanobiotechnology 2022; 20:135. [PMID: 35292020 PMCID: PMC8922796 DOI: 10.1186/s12951-022-01347-3] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 03/02/2022] [Indexed: 02/08/2023] Open
Abstract
Background Exosomes derived from stem cells have been widely studied for promoting regeneration and reconstruction of multiple tissues as “cell-free” therapies. However, the applications of exosomes have been hindered by limited sources and insufficient therapeutic potency. Results In this study, a stem cell-mediated gene therapy strategy is developed in which mediator mesenchymal stem cells are genetically engineered by bone morphogenetic protein-2 gene to produce exosomes (MSC-BMP2-Exo) with enhanced bone regeneration potency. This effect is attributed to the synergistic effect of the content derived from MSCs and the up-regulated BMP2 gene expression. The MSC-BMP2-Exo also present homing ability to the injured site. The toxic effect of genetical transfection vehicles is borne by mediator MSCs, while the produced exosomes exhibit excellent biocompatibility. In addition, by plasmid tracking, it is interesting to find a portion of plasmid DNA can be encapsulated by exosomes and delivered to recipient cells. Conclusions In this strategy, engineered MSCs function as cellular factories, which effectively produce exosomes with designed and enhanced therapeutic effects. The accelerating effect in bone healing and the good biocompatibility suggest the potential clinical application of this strategy. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s12951-022-01347-3.
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Affiliation(s)
- Feiyang Li
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Jun Wu
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, The University of Hong Kong-Shenzhen Hospital, Shenzhen, 518053, China.,Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, 999077, China
| | - Daiye Li
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, The University of Hong Kong-Shenzhen Hospital, Shenzhen, 518053, China.,Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, 999077, China
| | - Liuzhi Hao
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yanqun Li
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Dan Yi
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Kelvin W K Yeung
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, The University of Hong Kong-Shenzhen Hospital, Shenzhen, 518053, China.,Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, 999077, China
| | - Di Chen
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - William W Lu
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China.,Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, 999077, China
| | - Haobo Pan
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Tak Man Wong
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, The University of Hong Kong-Shenzhen Hospital, Shenzhen, 518053, China. .,Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, 999077, China.
| | - Xiaoli Zhao
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China. .,University of Chinese Academy of Sciences, Beijing, 100049, China.
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143
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Poisa-Beiro L, Landry JJM, Raffel S, Tanaka M, Zaugg J, Gavin AC, Ho AD. Glucose Metabolism and Aging of Hematopoietic Stem and Progenitor Cells. Int J Mol Sci 2022; 23:ijms23063028. [PMID: 35328449 PMCID: PMC8955027 DOI: 10.3390/ijms23063028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 02/26/2022] [Accepted: 03/02/2022] [Indexed: 12/13/2022] Open
Abstract
Comprehensive proteomics studies of human hematopoietic stem and progenitor cells (HSPC) have revealed that aging of the HSPC compartment is characterized by elevated glycolysis. This is in addition to deregulations found in murine transcriptomics studies, such as an increased differentiation bias towards the myeloid lineage, alterations in DNA repair, and a decrease in lymphoid development. The increase in glycolytic enzyme activity is caused by the expansion of a more glycolytic HSPC subset. We therefore developed a method to isolate HSPC into three distinct categories according to their glucose uptake (GU) levels, namely the GUhigh, GUinter and GUlow subsets. Single-cell transcriptomics studies showed that the GUhigh subset is highly enriched for HSPC with a differentiation bias towards myeloid lineages. Gene set enrichment analysis (GSEA) demonstrated that the gene sets for cell cycle arrest, senescence-associated secretory phenotype, and the anti-apoptosis and P53 pathways are significantly upregulated in the GUhigh population. With this series of studies, we have produced a comprehensive proteomics and single-cell transcriptomics atlas of molecular changes in human HSPC upon aging. Although many of the molecular deregulations are similar to those found in mice, there are significant differences. The most unique finding is the association of elevated central carbon metabolism with senescence. Due to the lack of specific markers, the isolation and collection of senescent cells have yet to be developed, especially for human HSPC. The GUhigh subset from the human HSPC compartment possesses all the transcriptome characteristics of senescence. This property may be exploited to accurately enrich, visualize, and trace senescence development in human bone marrow.
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Affiliation(s)
- Laura Poisa-Beiro
- Department of Medicine V, University of Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany; (L.P.-B.); (S.R.)
- Molecular Medicine Partnership Unit Heidelberg, European Molecular Biology Laboratory (EMBL) & Heidelberg University, 69120 Heidelberg, Germany; (J.Z.); (A.-C.G.)
| | - Jonathan J. M. Landry
- Genomics Core Facility, European Molecular Biology Laboratory (EMBL), Meyerhofstr. 1, 69117 Heidelberg, Germany;
| | - Simon Raffel
- Department of Medicine V, University of Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany; (L.P.-B.); (S.R.)
| | - Motomu Tanaka
- Physical Chemistry of Biosystems, Inst, Heidelberg University, Im Neuenheimer Feld 253, 69120 Heidelberg, Germany;
| | - Judith Zaugg
- Molecular Medicine Partnership Unit Heidelberg, European Molecular Biology Laboratory (EMBL) & Heidelberg University, 69120 Heidelberg, Germany; (J.Z.); (A.-C.G.)
- European Molecular Biology Laboratory, Meyerhofstr. 1, 69117 Heidelberg, Germany
| | - Anne-Claude Gavin
- Molecular Medicine Partnership Unit Heidelberg, European Molecular Biology Laboratory (EMBL) & Heidelberg University, 69120 Heidelberg, Germany; (J.Z.); (A.-C.G.)
- Department for Cell Physiology and Metabolism, Centre Medical Universitaire, University of Geneva, Rue Michel-Servet 1, 1211 Geneva, Switzerland
| | - Anthony D. Ho
- Department of Medicine V, University of Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany; (L.P.-B.); (S.R.)
- Molecular Medicine Partnership Unit Heidelberg, European Molecular Biology Laboratory (EMBL) & Heidelberg University, 69120 Heidelberg, Germany; (J.Z.); (A.-C.G.)
- Correspondence:
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144
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Durdan MM, Azaria RD, Weivoda MM. Novel insights into the coupling of osteoclasts and resorption to bone formation. Semin Cell Dev Biol 2022; 123:4-13. [PMID: 34756783 PMCID: PMC8840962 DOI: 10.1016/j.semcdb.2021.10.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 10/16/2021] [Accepted: 10/18/2021] [Indexed: 12/17/2022]
Abstract
Bone remodeling consists of resorption by osteoclasts (OCs) and formation by osteoblasts (OBs). Precise coordination of these activities is required for the resorbed bone to be replaced with an equal amount of new bone in order to maintain skeletal mass throughout the lifespan. This coordination of remodeling processes is referred to as the "coupling" of resorption to bone formation. In this review, we discuss the essential role for OCs in coupling resorption to bone formation, mechanisms for this coupling, and how coupling becomes less efficient or disrupted in conditions of bone loss. Lastly, we provide perspectives on targeting coupling to treat human bone disease.
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Affiliation(s)
- Margaret M. Durdan
- Cell and Molecular Biology Program, University of Michigan Medical School, Ann Arbor, MI 48109, USA,Biointerfaces Institute, University of Michigan, Ann Arbor, MI 48109, USA
| | - Ruth D. Azaria
- Cell and Molecular Biology Program, University of Michigan Medical School, Ann Arbor, MI 48109, USA,Biointerfaces Institute, University of Michigan, Ann Arbor, MI 48109, USA
| | - Megan M. Weivoda
- Cell and Molecular Biology Program, University of Michigan Medical School, Ann Arbor, MI 48109, USA,Biointerfaces Institute, University of Michigan, Ann Arbor, MI 48109, USA,Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI 48109, USA
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145
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Hsiao YT, Shimizu I, Yoshida Y, Minamino T. Role of circulating molecules in age-related cardiovascular and metabolic disorders. Inflamm Regen 2022; 42:2. [PMID: 35012677 PMCID: PMC8744343 DOI: 10.1186/s41232-021-00187-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 11/30/2021] [Indexed: 12/12/2022] Open
Abstract
Studies analyzing heterochronic parabiosis mice models showed that molecules in the blood of young mice rejuvenate aged mice. Therefore, blood-based therapies have become one of the therapeutic approaches to be considered for age-related diseases. Blood includes numerous biologically active molecules such as proteins, metabolites, hormones, miRNAs, etc. and accumulating evidence indicates some of these change their concentration with chronological aging or age-related disorders. The level of some circulating molecules showed a negative or positive correlation with all-cause mortality, cardiovascular events, or metabolic disorders. Through analyses of clinical/translation/basic research, some molecules were focused on as therapeutic targets. One approach is the supplementation of circulating anti-aging molecules. Favorable results in preclinical studies let some molecules to be tested in humans. These showed beneficial or neutral results, and some were inconsistent. Studies with rodents and humans indicate circulating molecules can be recognized as biomarkers or therapeutic targets mediating their pro-aging or anti-aging effects. Characterization of these molecules with aging, testing their biological effects, and finding mimetics of young systemic milieu continue to be an interesting and important research topic to be explored.
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Affiliation(s)
- Yung Ting Hsiao
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8431, Japan
- Institute for Diseases of Old Age, Juntendo University Graduate School of Medicine, Tokyo, 113-8431, Japan
| | - Ippei Shimizu
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8431, Japan.
| | - Yohko Yoshida
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8431, Japan
- Department of Advanced Senotherapeutics, Juntendo University Graduate School of Medicine, Tokyo, 113-8431, Japan
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8431, Japan.
- Japan Agency for Medical Research and Development-Core Research for Evolutionary Medical Science and Technology (AMED-CREST), Japan Agency for Medical Research and Development, Tokyo, 100-0004, Japan.
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146
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Loopmans S, Stockmans I, Carmeliet G, Stegen S. Isolation and in vitro characterization of murine young-adult long bone skeletal progenitors. Front Endocrinol (Lausanne) 2022; 13:930358. [PMID: 35979436 PMCID: PMC9376626 DOI: 10.3389/fendo.2022.930358] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 07/05/2022] [Indexed: 11/13/2022] Open
Abstract
Skeletal stem and progenitor cells (SSPCs) constitute a reservoir of bone-forming cells necessary for bone development, modeling and remodeling, as well as for fracture healing. Recent advances in tools to identify and isolate SSPCs have revealed that cells with multipotent properties are present not only in neonatal bone, but also in adult bone marrow and periosteum. The long bone metaphysis and endosteum have been proposed as an additional SSPC niche, although in vitro approaches to study their cellular and molecular characteristics are still limited. Here, we describe a comprehensive procedure to isolate and culture SSPCs derived from the metaphysis and endosteum of young-adult mice. Based on flow cytometry analysis of known SSPC markers, we found the presence of putative multipotent SSPCs, similar to neonatal bone tissue. In vitro, metaphyseal/endosteal SSPCs possess self-renewing capacity, and their multipotency is underscored by the ability to differentiate into the osteogenic and adipogenic lineage, while chondrogenic potential is limited. Expansion of metaphyseal/endosteal SSPCs under low oxygen conditions increases their proliferation capacity, while progenitor properties are maintained, likely reflecting their hypoxic niche in vivo. Collectively, we propose a validated isolation and culture protocol to study metaphyseal/endosteal SSPC biology in vitro.
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147
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Wang Y, Li S, Zhao L, Cheng P, Liu J, Guo F, Xiao J, Zhu W, Chen A. Aging Relevant Metabolite Itaconate Inhibits Inflammatory Bone Loss. Front Endocrinol (Lausanne) 2022; 13:885879. [PMID: 35937818 PMCID: PMC9353012 DOI: 10.3389/fendo.2022.885879] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 06/07/2022] [Indexed: 11/13/2022] Open
Abstract
Progressive bone loss during aging makes osteoporosis one of the most common and life impacting conditions in geriatric populations. The bone homeostasis is maintained through persistent remodeling mediated by bone-forming osteoblast and bone-resorbing osteoclast. Inflammaging, a condition characterized by increased pro-inflammatory markers in the blood and other tissues during aging, has been reported to be associated with skeletal stem/progenitor cell dysfunction, which will result in impaired bone formation. However, the role of age-related inflammation and metabolites in regulation of osteoclast remains largely unknown. In the present study, we observed dichotomous phenotypes of anti-inflammatory metabolite itaconate in responding to inflammaging. Itaconate is upregulated in macrophages during aging but has less reactivity in responding to RANKL stimulation in aged macrophages. We confirmed the inhibitory effect of itaconate in regulating osteoclast differentiation and activation, and further verified the rescue role of itaconate in lipopolysaccharides induced inflammatory bone loss animal model. Our findings revealed that itaconate is a crucial regulatory metabolite during inflammaging that inhibits osteoclast to maintain bone homeostasis.
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Affiliation(s)
| | | | | | | | | | | | | | - Wentao Zhu
- *Correspondence: Wentao Zhu, ; Anmin Chen,
| | - Anmin Chen
- *Correspondence: Wentao Zhu, ; Anmin Chen,
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148
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Zeng Z, Guo R, Wang Z, Yan H, Lv X, Zhao Q, Jiang X, Zhang C, Zhang D, Yang C, Li W, Zhang Z, Wang Q, Huang R, Li B, Hu X, Gao L. Circulating Monocytes Act as a Common Trigger for the Calcification Paradox of Osteoporosis and Carotid Atherosclerosis via TGFB1-SP1 and TNFSF10-NFKB1 Axis. Front Endocrinol (Lausanne) 2022; 13:944751. [PMID: 35937796 PMCID: PMC9354531 DOI: 10.3389/fendo.2022.944751] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 06/20/2022] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Osteoporosis often occurs with carotid atherosclerosis and causes contradictory calcification across tissue in the same patient, which is called the "calcification paradox". Circulating monocytes may be responsible for this unbalanced ectopic calcification. Here, we aimed to show how CD14+ monocytes contribute to the pathophysiology of coexisting postmenopausal osteoporosis and carotid atherosclerosis. METHODS We comprehensively analyzed osteoporosis data from the mRNA array dataset GSE56814 and the scRNA-seq dataset GSM4423510. Carotid atherosclerosis data were obtained from the GSE23746 mRNA dataset and GSM4705591 scRNA-seq dataset. First, osteoblast and vascular SMC lineages were annotated based on their functional expression using gene set enrichment analysis and AUCell scoring. Next, pseudotime analysis was applied to draw their differentiated trajectory and identify the key gene expression changes in crossroads. Then, ligand-receptor interactions between CD14+ monocytes and osteoblast and vascular smooth muscle cell (SMC) lineages were annotated with iTALK. Finally, we selected calcification paradox-related expression in circulating monocytes with LASSO analysis. RESULTS First, we found a large proportion of delayed premature osteoblasts in osteoporosis and osteogenic SMCs in atherosclerosis. Second, CD14+ monocytes interacted with the intermediate cells of the premature osteoblast and osteogenic SMC lineage by delivering TGFB1 and TNFSF10. This interaction served as a trigger activating the transcription factors (TF) SP1 and NFKB1 to upregulate the inflammatory response and cell senescence and led to a retarded premature state in the osteoblast lineage and osteogenic transition in the SMC lineage. Then, 76.49% of common monocyte markers were upregulated in the circulating monocytes between the two diseases, which were related to chemotaxis and inflammatory responses. Finally, we identified 7 calcification paradox-related genes on circulating monocytes, which were upregulated in aging cells and downregulated in DNA repair cells, indicating that the aging monocytes contributed to the development of the two diseases. CONCLUSIONS Our work provides a perspective for understanding the triggering roles of CD14+ monocytes in the development of the calcification paradox in osteoporosis- and atherosclerosis-related cells based on combined scRNA and mRNA data. This study provided us with an elucidation of the mechanisms underlying the calcification paradox and could help in developing preventive and therapeutic strategies.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - Bo Li
- *Correspondence: Liangbin Gao, ; Xumin Hu, ; Bo Li,
| | - Xumin Hu
- *Correspondence: Liangbin Gao, ; Xumin Hu, ; Bo Li,
| | - Liangbin Gao
- *Correspondence: Liangbin Gao, ; Xumin Hu, ; Bo Li,
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149
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Aging, Bone Marrow and Next-Generation Sequencing (NGS): Recent Advances and Future Perspectives. Int J Mol Sci 2021; 22:ijms222212225. [PMID: 34830107 PMCID: PMC8620539 DOI: 10.3390/ijms222212225] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/07/2021] [Accepted: 11/09/2021] [Indexed: 12/28/2022] Open
Abstract
The aging of bone marrow (BM) remains a very imperative and alluring subject, with an ever-increasing interest among fellow scientists. A considerable amount of progress has been made in this field with the established ‘hallmarks of aging’ and continued efforts to investigate the age-related changes observed within the BM. Inflammaging is considered as a low-grade state of inflammation associated with aging, and whilst the possible mechanisms by which aging occurs are now largely understood, the processes leading to the underlying changes within aged BM remain elusive. The ability to identify these changes and detect such alterations at the genetic level are key to broadening the knowledgebase of aging BM. Next-generation sequencing (NGS) is an important molecular-level application presenting the ability to not only determine genomic base changes but provide transcriptional profiling (RNA-seq), as well as a high-throughput analysis of DNA–protein interactions (ChIP-seq). Utilising NGS to explore the genetic alterations occurring over the aging process within alterative cell types facilitates the comprehension of the molecular and cellular changes influencing the dynamics of aging BM. Thus, this review prospects the current landscape of BM aging and explores how NGS technology is currently being applied within this ever-expanding field of research.
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150
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Clarke J. Ageing stem cells hold the key to age-related bone degeneration. Nat Rev Rheumatol 2021; 17:580. [PMID: 34471265 DOI: 10.1038/s41584-021-00688-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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