51
|
Regulation of Stem Cells by Cullin-RING Ligase. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1217:79-98. [PMID: 31898223 DOI: 10.1007/978-981-15-1025-0_6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Stem cells can remain quiescent, self-renewal, and differentiate into many types of cells and even cancer stem cells. The coordination of these complex processes maintains the homeostasis of the organism. Ubiquitination is an important posttranslational modification process that regulates protein stability and activity. The ubiquitination levels of stem cell-associated proteins are closely related with stem cell characteristics. Cullin-RING Ligases (CRLs) are the largest family of E3 ubiquitin ligases, accounting for approximately 20% of proteins degraded by proteasome. In this review, we discuss the role of CRLs in stem cell homeostasis, self-renewal, and differentiation and expound their ubiquitination substrates. In addition, we also discuss the effect of CRLs on the formation of cancer stem cells that may provide promising therapy strategies for cancer.
Collapse
|
52
|
Chang B, Qiu H, Zhao H, Yang X, Wang Y, Ji T, Zhang Y, Quan Q, Li Y, Zeng J, Meng H, Gu Y. The Effects of Photobiomodulation on MC3T3-E1 Cells via 630 nm and 810 nm Light-Emitting Diode. Med Sci Monit 2019; 25:8744-8752. [PMID: 31743330 PMCID: PMC6880645 DOI: 10.12659/msm.920396] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Accepted: 11/05/2019] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Photobiomodulation (PBM) has been explored as a promising therapeutic strategy to regulate bone cell growth; however, the effects of PBM on osteoblast cell lines remains poorly understood. In addition, as a light source of PBM, the light uniformity of light-emitting diode (LED) devices has not been given enough attention. MATERIAL AND METHODS Here, we sought to investigate the effects of PBM on MC3T3-E1 cells via 630 nm and 810 nm light from a newly designed LED with high uniformity of light. Cell proliferation, flow cytometric analysis, alkaline phosphatase (ALP) staining, ALP activity, Alizarin Red S staining, and quantitative real-time polymerase chain reaction (qRT-PCR) were carried out to assess treatment response. MC3T3-E1 cells were irradiated with LED devices (630±5 nm and 810±10 nm, continuous wave) for 200 seconds at a power density of 5 mW/cm² once daily. RESULTS Increases in cell proliferation and decreases in cell apoptosis were evident following irradiation. ALP staining intensity and activity were also significantly increased following irradiation. Level of mineralization was obviously enhanced in irradiated groups compared with non-irradiated controls. qRT-PCR also showed significant increases in mRNA expression of osteocalcin (OCN) and osteoprotegerin (OPG) in the irradiated groups. CONCLUSIONS Our results showed that LED PBM could promote the proliferation, ALP staining intensity and activity, level of mineralization, gene expression of OCN and OPG of MC3T3-E1 cells, with no significant difference between the 630 nm- and 810 nm-irradiated groups.
Collapse
Affiliation(s)
- Biao Chang
- Department of Laser Medicine, Chinese People’s Liberation Army General Hospital, Beijing, P.R. China
| | - Haixia Qiu
- Department of Laser Medicine, Chinese People’s Liberation Army General Hospital, Beijing, P.R. China
| | - Hongyou Zhao
- Department of Laser Medicine, Chinese People’s Liberation Army General Hospital, Beijing, P.R. China
| | - Xi Yang
- State Key Laboratory of Proteomics, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing, P.R. China
- General Hospital of Xinjiang Military Command, Urumqi, Xinjiang, P.R. China
| | - Ying Wang
- Department of Laser Medicine, Chinese People’s Liberation Army General Hospital, Beijing, P.R. China
| | - Tengda Ji
- Department of Laser Medicine, Chinese People’s Liberation Army General Hospital, Beijing, P.R. China
| | - Yuxuan Zhang
- Institute of Orthopedics, Chinese People’s Liberation Army General Hospital, Beijing, P.R. China
- Beijing Key Laboratory of Regenerative Medicine in Orthopedics, Beijing, P.R. China
- Key Laboratory of Musculoskeletal Trauma and War Injuries, People’s Liberation Army, Beijing, P.R. China
| | - Qi Quan
- Institute of Orthopedics, Chinese People’s Liberation Army General Hospital, Beijing, P.R. China
- Beijing Key Laboratory of Regenerative Medicine in Orthopedics, Beijing, P.R. China
- Key Laboratory of Musculoskeletal Trauma and War Injuries, People’s Liberation Army, Beijing, P.R. China
| | - Yunqi Li
- Department of Laser Medicine, Chinese People’s Liberation Army General Hospital, Beijing, P.R. China
| | - Jing Zeng
- Department of Laser Medicine, Chinese People’s Liberation Army General Hospital, Beijing, P.R. China
| | - Haoye Meng
- Institute of Orthopedics, Chinese People’s Liberation Army General Hospital, Beijing, P.R. China
- Beijing Key Laboratory of Regenerative Medicine in Orthopedics, Beijing, P.R. China
- Key Laboratory of Musculoskeletal Trauma and War Injuries, People’s Liberation Army, Beijing, P.R. China
| | - Ying Gu
- Department of Laser Medicine, Chinese People’s Liberation Army General Hospital, Beijing, P.R. China
| |
Collapse
|
53
|
Fujino S, Hamano S, Tomokiyo A, Itoyama T, Hasegawa D, Sugii H, Yoshida S, Washio A, Nozu A, Ono T, Wada N, Kitamura C, Maeda H. Expression and function of dopamine in odontoblasts. J Cell Physiol 2019; 235:4376-4387. [PMID: 31612496 DOI: 10.1002/jcp.29314] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 09/30/2019] [Indexed: 11/07/2022]
Abstract
Dopamine (DA) is produced from tyrosine by tyrosine hydroxylase (TH). A recent study has reported that DA promotes the mineralization of murine preosteoblasts. However, the role of DA in odontoblasts has not been examined. Therefore, in this investigation, we researched the expression of TH and DA in odontoblasts and the effects of DA on the differentiation of preodontoblasts (KN-3 cells). Immunostaining showed that TH and DA were intensely expressed in odontoblasts and preodontoblasts of rat incisors and molars. KN-3 cells expressed D1-like and D2-like receptors for DA. Furthermore, DA promoted odontoblastic differentiation of KN-3 cells, whereas an antagonist of D1-like receptors and a PKA signaling blocker, inhibited such differentiation. However, antagonists of D2-like receptors promoted differentiation. These results suggested that DA in preodontoblasts and odontoblasts might promote odontoblastic differentiation through D1-like receptors, but not D2-like receptors, and PKA signaling in an autocrine or paracrine manner and plays roles in dentinogenesis.
Collapse
Affiliation(s)
- Shoko Fujino
- Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Sayuri Hamano
- Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, Fukuoka, Japan.,OBT Research Center, Kyushu University, Fukuoka, Japan
| | - Atsushi Tomokiyo
- Department of Endodontology, Kyushu University Hospital, Fukuoka, Japan
| | - Tomohiro Itoyama
- Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Daigaku Hasegawa
- Department of Endodontology, Kyushu University Hospital, Fukuoka, Japan
| | - Hideki Sugii
- Department of Endodontology, Kyushu University Hospital, Fukuoka, Japan
| | | | - Ayako Washio
- Division of Endodontics and Restorative Density, Department of Science of Oral Functions, Kyushu Dental University, Fukuoka, Japan
| | - Aoi Nozu
- Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Taiga Ono
- Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Naohisa Wada
- Division of General Dentistry, Kyushu University Hospital, Fukuoka, Japan
| | - Chiaki Kitamura
- Division of Endodontics and Restorative Density, Department of Science of Oral Functions, Kyushu Dental University, Fukuoka, Japan
| | - Hidefumi Maeda
- Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, Fukuoka, Japan.,Department of Endodontology, Kyushu University Hospital, Fukuoka, Japan
| |
Collapse
|
54
|
Daley EJ, Pajevic PD, Roy S, Trackman PC. Impaired Gastric Hormone Regulation of Osteoblasts and Lysyl Oxidase Drives Bone Disease in Diabetes Mellitus. JBMR Plus 2019; 3:e10212. [PMID: 31687648 PMCID: PMC6820454 DOI: 10.1002/jbm4.10212] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 06/06/2019] [Accepted: 06/11/2019] [Indexed: 12/15/2022] Open
Abstract
Diabetic bone disease is a complication of type I and type II diabetes, both of which are increasing in the United States and elsewhere. Increased hip and foot fracture rates do not correlate well with changes in bone mineral density (BMD), whereas studies support the importance of collagen structure to bone strength. Extracellular lysyl oxidase (LOX) catalyzes the oxidative deamination of hydroxylysine and lysine residues in collagens resulting in aldehydes that subsequently form critically important biosynthetic crosslinks that stabilize functional collagens. Although LOX-dependent biosynthetic crosslinks in bone collagen are deficient in diabetic bone, the expression and regulation of bone LOXs in diabetes have not been comprehensively studied. Here, we found that LOX is profoundly downregulated in bone in diabetes. Moreover, we have identified a novel metabolic regulatory relationship that is dysregulated in diabetes using mouse models. Data indicate that the incretin (gastric hormone) known as glucose-dependent insulinotropic polypeptide (GIP) that is anabolic to osteoblasts strongly upregulates LOX, and that this regulation is disrupted in the streptozotocin-induced model of diabetes in mice. In vivo and in vitro studies support that diabetes results in elevated circulating peripheral dopamine, likely also derived from the gut, and is responsible for blocking GIP signaling and LOX levels in osteoblasts. Moreover, peripheral administration of the dopamine D2 receptor antagonist amisulpride to diabetic mice restored trabecular bone structure to near normal and partially reversed downregulation of LOX. Taken together our data identifies a novel metabolic relationship between the gut-derived hormone GIP and bone-derived LOX, and points to the importance of LOX dysregulation in the pathology of diabetic bone disease. © 2019 The Authors. JBMR Plus published by Wiley Periodicals, Inc. on behalf of the American Society for Bone and Mineral Research.
Collapse
Affiliation(s)
- Eileen J Daley
- Boston University Henry M. Goldman School of Dental Medicine, Department of Molecular and Cell BiologyBostonMAUSA
| | - Paola Divieti Pajevic
- Boston University Henry M. Goldman School of Dental Medicine, Department of Molecular and Cell BiologyBostonMAUSA
| | - Sayon Roy
- Boston University School of Medicine, Department of MedicineBostonMAUSA
| | - Philip C Trackman
- Boston University Henry M. Goldman School of Dental Medicine, Department of Molecular and Cell BiologyBostonMAUSA
| |
Collapse
|
55
|
Global deletion of Optineurin results in altered type I IFN signaling and abnormal bone remodeling in a model of Paget's disease. Cell Death Differ 2019; 27:71-84. [PMID: 31076632 DOI: 10.1038/s41418-019-0341-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 03/29/2019] [Accepted: 04/15/2019] [Indexed: 11/09/2022] Open
Abstract
Genome-wide association studies (GWAS) have identified Optineurin (OPTN) as genetically linked to Paget's disease of the bone (PDB), a chronic debilitating bone remodeling disorder characterized by localized areas of increased bone resorption and abnormal bone remodeling. However, only ~10% of mouse models with a mutation in Optn develop PDB, thus hindering the mechanistic understanding of the OPTN-PDB axis. Here, we reveal that 100% of aged Optn global knockout (Optn-/-) mice recapitulate the key clinical features observed in PDB patients, including polyostotic osteolytic lesions, mixed-phase lesions, and increased serum levels of alkaline phosphatase (ALP). Differentiation of primary osteoclasts ex vivo revealed that the absence of Optn resulted in an increased osteoclastogenesis. Mechanistically, Optn-deficient osteoclasts displayed a significantly decreased type I interferon (IFN) signature, resulting from both defective production of IFNβ and impaired signaling via the IFNα/βR, which acts as a negative feedback loop for osteoclastogenesis and survival. These data highlight the dual roles of OPTN in the type I IFN response to restrain osteoclast activation and bone resorption, offering a novel therapeutic target for PDB. Therefore, our study describes a novel and essential mouse model for PDB and define a key role for OPTN in osteoclast differentiation.
Collapse
|
56
|
Jia L, Han F, Wang H, Zhu C, Guo Q, Li J, Zhao Z, Zhang Q, Zhu X, Li B. Polydopamine-assisted surface modification for orthopaedic implants. J Orthop Translat 2019; 17:82-95. [PMID: 31194087 PMCID: PMC6551362 DOI: 10.1016/j.jot.2019.04.001] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 03/27/2019] [Accepted: 04/03/2019] [Indexed: 01/03/2023] Open
Abstract
Along with the massive use of implants in orthopaedic surgeries in recent few decades, there has been a tremendous demand for the surface modification of the implants to avoid surgery failure and improve their function. Polydopamine (PDA), being able to adhere to almost all kinds of substrates and possessing copious functional groups for covalently immobilizing biomolecules and anchoring metal ions, has been widely used for surface modification of materials since its discovery in the last decade. PDA and its derivatives can be used for the surface modification of orthopaedic implants to modulate cellular responses, including cell spreading, migration, proliferation, and differentiation, and may thereby enhance the function of existing implants. In addition, the osseointegration and antimicrobial properties of orthopaedic implants may also be improved by PDA-based coatings. The aim of this review is to provide a brief overview of current advances of surface modification technologies for orthopaedic implants using PDA and its derivatives as a medium. Given the versatility of PDA-based adhesion, such PDA-assisted surface modification technologies will certainly benefit the development of new orthopaedic implants. THE TRANSLATIONAL POTENTIAL OF THIS ARTICLE Surface treatments of orthopaedic implants, which are normally inert materials, are essential for their performance in vivo. This review summarizes recent advances in the surface modification of orthopaedic implants using facile and highly versatile techniques based on the use of polydopamine (PDA) and its derivatives.
Collapse
Affiliation(s)
- Luanluan Jia
- Department of Orthopaedic Surgery, The First Affiliated Hospital, Soochow University, Suzhou, Jiangsu, China
- College of Chemistry, Chemical Engineering and Materials Science, Orthopaedic Institute, Soochow University, Suzhou, Jiangsu, China
| | - Fengxuan Han
- Department of Orthopaedic Surgery, The First Affiliated Hospital, Soochow University, Suzhou, Jiangsu, China
- College of Chemistry, Chemical Engineering and Materials Science, Orthopaedic Institute, Soochow University, Suzhou, Jiangsu, China
| | - Huan Wang
- Department of Orthopaedic Surgery, The First Affiliated Hospital, Soochow University, Suzhou, Jiangsu, China
| | - Caihong Zhu
- College of Chemistry, Chemical Engineering and Materials Science, Orthopaedic Institute, Soochow University, Suzhou, Jiangsu, China
| | - Qianping Guo
- College of Chemistry, Chemical Engineering and Materials Science, Orthopaedic Institute, Soochow University, Suzhou, Jiangsu, China
| | - Jiaying Li
- College of Chemistry, Chemical Engineering and Materials Science, Orthopaedic Institute, Soochow University, Suzhou, Jiangsu, China
| | - Zhongliang Zhao
- College of Chemistry, Chemical Engineering and Materials Science, Orthopaedic Institute, Soochow University, Suzhou, Jiangsu, China
| | - Qiang Zhang
- Second Orthopedics Department, Pingxiang Traditional Chinese Medicine Hospital, Pingxiang, Jiangxi, China
| | - Xuesong Zhu
- Department of Orthopaedic Surgery, The First Affiliated Hospital, Soochow University, Suzhou, Jiangsu, China
| | - Bin Li
- Department of Orthopaedic Surgery, The First Affiliated Hospital, Soochow University, Suzhou, Jiangsu, China
- College of Chemistry, Chemical Engineering and Materials Science, Orthopaedic Institute, Soochow University, Suzhou, Jiangsu, China
- China Orthopaedic Regenerative Medicine Group (CORMed), Hangzhou, Zhejiang, China
| |
Collapse
|
57
|
Wadhwa R, Kumar M, Paudel YN, Iqbal R, Kothari P, Trivedi R, Vohora D. Effect of escitalopram and carbidopa on bone markers in Wistar rats: a preliminary experimental study. J Bone Miner Metab 2019; 37:36-42. [PMID: 29380075 DOI: 10.1007/s00774-018-0908-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 01/16/2018] [Indexed: 10/18/2022]
Abstract
In view of the opposite effects of gut and brain serotonin in bone, the key role of Wnt β/catenin pathway in osteoblastic proliferation and the controversial bony effects of selective serotonin reuptake inhibitors antidepressants, the present study investigated the effects of escitalopram alone and in combination with carbidopa (to block gut-derived serotonin) on markers of bone turnover and Wnt signaling and micro-CT in male Wistar rats. Escitalopram (2.0 mg/kg, p.o.) and carbidopa (10 mg/kg, p.o.) were administered daily for 40 days following which indicators of reduced (dickkopf-1, sclerostin), and increased (alkaline phosphatase) bone formation and bone resorption markers (receptor activator of nuclear factor κB ligand, tartrate-resistant acid phosphatase 5b) were determined. Our results indicated that escitalopram adversely affected bone as indicated by reduced bone formation and enhanced bone resorption. Further, the effects of escitalopram on bone formation were possibly mediated through gut serotonin while the mechanisms responsible for effects on resorption seem unrelated to gut serotonin. The promising effects of carbidopa on bone formation, as observed in our study, open up exciting possibilities for this drug requiring further investigations.
Collapse
Affiliation(s)
- Ravisha Wadhwa
- Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India
| | - Manoj Kumar
- Pharmaceutical Medicine, Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India
| | - Yam Nath Paudel
- Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India
| | - Ramsha Iqbal
- Pharmaceutical Medicine, Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India
| | - Priyanka Kothari
- Endocrinology Division, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Ritu Trivedi
- Endocrinology Division, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Divya Vohora
- Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India.
- Pharmaceutical Medicine, Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India.
| |
Collapse
|
58
|
Ciliotherapy Treatments to Enhance Biochemically- and Biophysically-Induced Mesenchymal Stem Cell Osteogenesis: A Comparison Study. Cell Mol Bioeng 2018; 12:53-67. [PMID: 31719899 DOI: 10.1007/s12195-018-00561-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 11/07/2018] [Indexed: 01/12/2023] Open
Abstract
Introduction New approaches to treat osteoporosis have focused on promoting bone formation through the targeting of osteoblasts and their progenitors, mesenchymal stem cells (MSCs). The primary cilium is a singular cellular extension known to play an important role in biochemical and biophysical osteogenic induction of MSCs. Defects in ciliary structure have been associated with a plethora of diseases. Therefore targeting the cilium therapeutically (ciliotherapies) has emerged as a potential new treatment modality. Therefore, this study performed a comparison analysis on known ciliotherapies and their potential effects in mediating MSC osteogenic differentiation. Methods MSCs were treated with forskolin, lithium chloride (LiCl) or fenoldopam to investigate the effect on ciliogenesis and cilia-associated signalling. Moreover, both early and long term biochemical and biophysical (fluid shear) induced osteogenic differentiation was examined in terms of osteogenic gene expression and bone matrix deposition following each treatment. Results LiCl and fenoldopam were found to enhance MSC ciliogenesis to a similar degree. LiCl significantly altered hedgehog (HH) and Wnt signalling which was associated with inhibited osteogenic gene expression, while fenoldopam demonstrated enhanced early osteogenesis. Long term treatment with both ciliotherapies did not enhance osteogenesis, however LiCl had detrimental effects on cell viability. Intriguingly both ciliotherapies enhanced MSC mechanosensitivity as demonstrated by augmented osteogenic gene expression in response to fluid shear, which over longer durations resulted in enhanced matrix deposition per cell. Conclusions Therefore, ciliotherapies can be utilised to enhance MSC ciliogenesis resulting in enhanced mechanosensitivity, however, only fenoldopam is a viable ciliotherapeutic option to enhance MSC osteogenesis.
Collapse
|
59
|
Palmieri V, Barba M, Di Pietro L, Conti C, De Spirito M, Lattanzi W, Papi M. Graphene Oxide Induced Osteogenesis Quantification by In-Situ 2D-Fluorescence Spectroscopy. Int J Mol Sci 2018; 19:E3336. [PMID: 30373116 PMCID: PMC6274764 DOI: 10.3390/ijms19113336] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 10/15/2018] [Accepted: 10/21/2018] [Indexed: 11/17/2022] Open
Abstract
Graphene and graphene oxide can promote the adhesion, growth and differentiation of mesenchymal stem cells. Further, graphene surface coatings accelerate the differentiation of human mesenchymal stem cells acting as osteogenic inducers. Quantification of the osteogenic induction is conventionally performed with Alizarin Red S (ARS), an anthraquinone derivative used to identify calcium deposits in tissue sections and cell cultures. The ARS staining is quite versatile because the dye forms an Alizarin Red S⁻calcium complex that can be extracted from the stained monolayer of cells and readily assayed by absorbance measurements. Direct visualization of stained deposits is also feasible; however, an in-situ visualization and quantification of deposits is possible only on transparent supports and not on thick opaque materials like ceramics and graphene composites that are well-known inducers of osteogenesis. In this manuscript, the shape of the 2D-fluorescence spectra of the ARS-calcium complex is used to develop a method to detect and monitor the in-situ differentiation process occurring during the osteogenic induction mediated by opaque graphene oxide surfaces.
Collapse
Affiliation(s)
- Valentina Palmieri
- Institute of Physics, Fondazione Policlinico Universitario A. Gemelli-IRCCS, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Rome, Italy.
- Institute for Complex Systems, National Research Council (ISC-CNR), Via dei Taurini 19, 00185 Rome, Italy.
| | - Marta Barba
- Institute of Anatomy and Cell Biology, Fondazione Policlinico Universitario A. Gemelli-IRCCS, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Rome, Italy.
| | - Lorena Di Pietro
- Institute of Anatomy and Cell Biology, Fondazione Policlinico Universitario A. Gemelli-IRCCS, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Rome, Italy.
| | - Claudio Conti
- Institute for Complex Systems, National Research Council (ISC-CNR), Via dei Taurini 19, 00185 Rome, Italy.
| | - Marco De Spirito
- Institute of Physics, Fondazione Policlinico Universitario A. Gemelli-IRCCS, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Rome, Italy.
| | - Wanda Lattanzi
- Institute of Anatomy and Cell Biology, Fondazione Policlinico Universitario A. Gemelli-IRCCS, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Rome, Italy.
| | - Massimiliano Papi
- Institute of Physics, Fondazione Policlinico Universitario A. Gemelli-IRCCS, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Rome, Italy.
| |
Collapse
|
60
|
Bone Regenerative Engineering Using a Protein Kinase A-Specific Cyclic AMP Analogue Administered for Short Term. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2018. [DOI: 10.1007/s40883-018-0063-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
61
|
Liu S, Fan Y, Chen A, Jalali A, Minami K, Ogawa K, Nakshatri H, Li BY, Yokota H. Osteocyte-Driven Downregulation of Snail Restrains Effects of Drd2 Inhibitors on Mammary Tumor Cells. Cancer Res 2018; 78:3865-3876. [PMID: 29769195 DOI: 10.1158/0008-5472.can-18-0056] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Revised: 03/26/2018] [Accepted: 05/10/2018] [Indexed: 12/30/2022]
Abstract
While bone is a frequent target of breast cancer-associated metastasis, little is known about the effects of tumor-bone interactions on the efficacy of tumor-suppressing agents. Here we examined the effect of two FDA-approved dopamine modulators, fluphenazine and trifluoperazine, on mammary tumor cells, osteoclasts, osteoblasts, and osteocytes. These agents suppressed proliferation and migration of mammary tumor cells chiefly by antagonizing dopamine receptor D2 and reduced bone resorption by downregulating nuclear factor of activated T cells, cytoplasmic 1 (Nfatc1). Three-dimensional spheroid formation assays revealed that tumor cells have high affinity to osteocytes and type I collagen, and interactions with osteocytes as well as administration of fluphenazine and trifluoperazine downregulated Snail and suppressed migratory behaviors. Unlike the inhibitory action of fluphenazine and trifluoperazine on tumor growth, tumor-osteocyte interactions stimulated tumor proliferation by upregulating NFκB and Akt. In the bone microenvironment, osteocytes downregulated Snail and acted as an attractant as well as a stimulant to mammary tumor cells. These results demonstrate that tumor-osteocyte interactions strengthen dopamine receptor-mediated suppression of tumor migration but weaken its inhibition of tumor proliferation in the osteocyte-rich bone microenvironment.Significance: These findings provide novel insight into the cellular cross-talk in the bone microevironment and the effects of dopamine modulators on mammary tumor cells and osteocytes. Cancer Res; 78(14); 3865-76. ©2018 AACR.
Collapse
Affiliation(s)
- Shengzhi Liu
- Department of Pharmacology, School of Pharmacy, Harbin Medical University, Harbin, China.,Department of Biomedical Engineering, Indiana University Purdue University Indianapolis, Indianapolis, Indiana
| | - Yao Fan
- Department of Pharmacology, School of Pharmacy, Harbin Medical University, Harbin, China.,Department of Biomedical Engineering, Indiana University Purdue University Indianapolis, Indianapolis, Indiana
| | - Andy Chen
- Department of Biomedical Engineering, Indiana University Purdue University Indianapolis, Indianapolis, Indiana
| | - Aydin Jalali
- Department of Biomedical Engineering, Indiana University Purdue University Indianapolis, Indianapolis, Indiana
| | - Kazumasa Minami
- Department of Radiation Oncology, Osaka University Graduate School of Medicine Suita, Osaka, Japan
| | - Kazuhiko Ogawa
- Department of Radiation Oncology, Osaka University Graduate School of Medicine Suita, Osaka, Japan
| | - Harikrishna Nakshatri
- Department of Surgery, Simon Cancer Research Center, Indiana University School of Medicine, Indianapolis, Indiana
| | - Bai-Yan Li
- Department of Pharmacology, School of Pharmacy, Harbin Medical University, Harbin, China.
| | - Hiroki Yokota
- Department of Pharmacology, School of Pharmacy, Harbin Medical University, Harbin, China. .,Department of Biomedical Engineering, Indiana University Purdue University Indianapolis, Indianapolis, Indiana
| |
Collapse
|
62
|
Ko E, Lee JS, Kim H, Yang SY, Yang D, Yang K, Lee J, Shin J, Yang HS, Ryu W, Cho SW. Electrospun Silk Fibroin Nanofibrous Scaffolds with Two-Stage Hydroxyapatite Functionalization for Enhancing the Osteogenic Differentiation of Human Adipose-Derived Mesenchymal Stem Cells. ACS APPLIED MATERIALS & INTERFACES 2018; 10:7614-7625. [PMID: 28475306 DOI: 10.1021/acsami.7b03328] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The development of functional scaffolds with improved osteogenic potential is important for successful bone formation and mineralization in bone tissue engineering. In this study, we developed a functional electrospun silk fibroin (SF) nanofibrous scaffold functionalized with two-stage hydroxyapatite (HAp) particles, using mussel adhesive-inspired polydopamine (PDA) chemistry. HAp particles were first incorporated into SF scaffolds during the electrospinning process, and then immobilized onto the electrospun SF nanofibrous scaffolds containing HAp via PDA-mediated adhesive chemistry. We obtained two-stage HAp-functionalized SF nanofibrous scaffolds with improved mechanical properties and capable of providing a bone-specific physiological microenvironment. The developed scaffolds were tested for their ability to enhance the osteogenic differentiation of human adipose-derived mesenchymal stem cells (hADMSCs) in vitro and repair bone defect in vivo. To boost their ability for bone repair, we genetically modified hADMSCs with the transcriptional coactivator with PDZ-binding motif (TAZ) via polymer nanoparticle-mediated gene delivery. TAZ is a well-known transcriptional modulator that activates the osteogenic differentiation of mesenchymal stem cells (MSCs). Two-stage HAp-functionalized SF scaffolds significantly promoted the osteogenic differentiation of TAZ-transfected hADMSCs in vitro and enhanced mineralized bone formation in a critical-sized calvarial bone defect model. Our study shows the potential utility of SF scaffolds with nanofibrous structures and enriched inorganic components in bone tissue engineering.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | - Hee Seok Yang
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine , Dankook University , Cheonan 31116 , Republic of Korea
| | | | - Seung-Woo Cho
- Center for Nanomedicine , Institute for Basic Science (IBS) , Seoul 03722 , Republic of Korea
| |
Collapse
|
63
|
Houseknecht KL, Bouchard CC, Black CA. Elucidating the Mechanism(s) Underlying Antipsychotic and Antidepressant-Mediated Fractures. ACTA ACUST UNITED AC 2017; 1:9-13. [PMID: 31008454 PMCID: PMC6469345 DOI: 10.29245/2578-2959/2018/1.1106] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Mood spectrum disorders and medications used to treat these disorders, such as atypical antipsychotic drugs (AA), are associated with metabolic and endocrine side effects including obesity, dyslipidemia, hyperglycemia and increased risk of fractures. Antidepressant medications, including selective serotonin reuptake inhibitors (SSRI), have also been reported to increase fracture risk in some patients. The pharmacology underlying the increased risk of fractures is currently unknown. Possible mechanisms include alternations in dopaminergic and/or serotonergic signaling pathways. As these medications distribute to the bone marrow as well as to the brain, it is possible that drug-induced fractures are due to both centrally mediated effects as well as direct effects on bone turnover. Given the growing patient population that is prescribed these medications for both on- and off-label indications, understanding the level of risk and the mechanisms underlying drug-induced fractures is important for informing both prescribing and patient monitoring practices.
Collapse
Affiliation(s)
- Karen L Houseknecht
- College of Osteopathic Medicine, University of New England, 11 Hills Beach Road, Biddeford, ME 04005, USA.,College of Pharmacy, University of New England, 11 Hills Beach Road, Biddeford, ME 04005 USA
| | - C C Bouchard
- College of Osteopathic Medicine, University of New England, 11 Hills Beach Road, Biddeford, ME 04005, USA
| | - C A Black
- College of Pharmacy, University of New England, 11 Hills Beach Road, Biddeford, ME 04005 USA
| |
Collapse
|
64
|
Cullin 3-Based Ubiquitin Ligases as Master Regulators of Mammalian Cell Differentiation. Trends Biochem Sci 2017; 43:95-107. [PMID: 29249570 DOI: 10.1016/j.tibs.2017.11.010] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 11/23/2017] [Accepted: 11/25/2017] [Indexed: 01/09/2023]
Abstract
Specificity of the ubiquitin proteasome system is controlled by ubiquitin E3 ligases, including their major representatives, the multisubunit cullin-RING ubiquitin (Ub) ligases (CRLs). More than 200 different CRLs are divided into seven families according to their cullin scaffolding proteins (CUL1-7) around which they are assembled. Research over two decades has revealed that different CRL families are specialized to fulfill specific cellular functions. Whereas many CUL1-based CRLs (CRL1s) ubiquitylate cell cycle regulators, CRL4 complexes often associate with chromatin to control DNA metabolism. Based on studies about differentiation programs of mesenchymal stem cells (MSCs), including myogenesis, neurogenesis, chondrogenesis, osteogenesis and adipogenesis, we propose here that CRL3 complexes evolved to fulfill a pivotal role in mammalian cell differentiation.
Collapse
|
65
|
Lee DJ, Lee YT, Zou R, Daniel R, Ko CC. Polydopamine-Laced Biomimetic Material Stimulation of Bone Marrow Derived Mesenchymal Stem Cells to Promote Osteogenic Effects. Sci Rep 2017; 7:12984. [PMID: 29021583 PMCID: PMC5636820 DOI: 10.1038/s41598-017-13326-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 09/20/2017] [Indexed: 01/04/2023] Open
Abstract
A hydroxyapatite-collagen (HC) composite material can mimic composition and ultra-structures of natural bone and provide adequate bioactive material-tissue interactions. Incorporation of dopamine (DA) is one of keys in increasing the mechanical strength of the HC material to approaching that of cortical bone. In this study, the in vitro osteogenic effects of polydopamine-laced hydroxyapatite collagen calcium silicate (HCCS-PDA) were examined by culturing rat mesenchymal stem cells (rMSCs) on HCCS-PDA and HCCS coated plates. HCCS-PDA group demonstrated less cytotoxic from Live/Dead cytotoxic assay and displayed higher cell attachment, proliferation and mineralization than the HCCS group in vitro. For in vivo bone regeneration, HCCS-PDA or HCCS particulates with or without rMSC aggregates were implanted into rat critical-sized calvarial defects (CSD). After 12 weeks, calvarial bone regeneration was evaluated radiographically, histologically, and histomorphometrically. While the majority of new bone formation occurred around the HCCS-PDA particulates with rMSC aggregates, The HCCS-PDA particulates without rMSC aggregates showed limited osteoconductivity. HCCS with or without rMSC aggregates resulted in less bone formation, indicating a prominent role of DA in effective bone regeneration. Therefore, the HCCS-PDA biomaterial with the aid of rMSCs can be used to develop therapeutic strategies in bone tissue engineering with numerable clinical applications.
Collapse
Affiliation(s)
- Dong Joon Lee
- Oral and Craniofacial Health Sciences Research, School of Dentistry, University of North Carolina, CB #7455, Chapel Hill, NC, 27599, USA
| | - Yan-Ting Lee
- Oral and Craniofacial Health Sciences Research, School of Dentistry, University of North Carolina, CB #7455, Chapel Hill, NC, 27599, USA
| | - Rui Zou
- Oral and Craniofacial Health Sciences Research, School of Dentistry, University of North Carolina, CB #7455, Chapel Hill, NC, 27599, USA
| | - Renie Daniel
- Department of Oral and Maxillofacial Surgery, School of Dentistry, University of North Carolina, CB #7454, Chapel Hill, NC, 27599, USA
| | - Ching-Chang Ko
- Oral and Craniofacial Health Sciences Research, School of Dentistry, University of North Carolina, CB #7455, Chapel Hill, NC, 27599, USA. .,Department of Orthodontics, School of Dentistry, University of North Carolina, CB #7454, Chapel Hill, NC, 27599, USA.
| |
Collapse
|
66
|
Motyl KJ, Beauchemin M, Barlow D, Le PT, Nagano K, Treyball A, Contractor A, Baron R, Rosen CJ, Houseknecht KL. A novel role for dopamine signaling in the pathogenesis of bone loss from the atypical antipsychotic drug risperidone in female mice. Bone 2017; 103:168-176. [PMID: 28689816 PMCID: PMC5573184 DOI: 10.1016/j.bone.2017.07.008] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 06/30/2017] [Accepted: 07/05/2017] [Indexed: 01/19/2023]
Abstract
Atypical antipsychotic (AA) drugs, including risperidone (RIS), are used to treat schizophrenia, bipolar disorder, and autism, and are prescribed off-label for other mental health issues. AA drugs are associated with severe metabolic side effects of obesity and type 2 diabetes. Cross-sectional and longitudinal data also show that risperidone causes bone loss and increases fracture risk in both men and women. There are several potential mechanisms of bone loss from RIS. One is hypogonadism due to hyperprolactinemia from dopamine receptor antagonism. However, many patients have normal prolactin levels; moreover we demonstrated that bone loss from RIS in mice can be blocked by inhibition of β-adrenergic receptor activation with propranolol, suggesting the sympathetic nervous system (SNS) plays a pathological role. Further, when, we treated ovariectomized (OVX) and sham operated mice daily for 8weeks with RIS or vehicle we demonstrated that RIS causes significant trabecular bone loss in both sham operated and OVX mice. RIS directly suppressed osteoblast number in both sham and OVX mice, but increased osteoclast number and surface in OVX mice alone, potentially accounting for the augmented bone loss. Thus, hypogonadism alone cannot explain RIS induced bone loss. In the current study, we show that dopamine and RIS are present in the bone marrow compartment and that RIS can exert its effects directly on bone cells via dopamine receptors. Our findings of both direct and indirect effects of AA drugs on bone are relevant for current and future clinical and translational studies investigating the mechanism of skeletal changes from AA drugs.
Collapse
Affiliation(s)
- Katherine J Motyl
- Center for Molecular Medicine, Maine Medical Center Research Institute, Maine Medical Center, Scarborough, ME, USA
| | - Megan Beauchemin
- Department of Biomedical Sciences, College of Osteopathic Medicine, University of New England, Biddeford, ME, USA
| | - Deborah Barlow
- Department of Biomedical Sciences, College of Osteopathic Medicine, University of New England, Biddeford, ME, USA
| | - Phuong T Le
- Center for Clinical and Translational Research, Maine Medical Center Research Institute, Maine Medical Center, Scarborough, ME, USA
| | - Kenichi Nagano
- Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Harvard University, Boston, MA, USA
| | - Annika Treyball
- Center for Molecular Medicine, Maine Medical Center Research Institute, Maine Medical Center, Scarborough, ME, USA
| | - Anisha Contractor
- Department of Biomedical Sciences, College of Osteopathic Medicine, University of New England, Biddeford, ME, USA
| | - Roland Baron
- Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Harvard University, Boston, MA, USA
| | - Clifford J Rosen
- Center for Clinical and Translational Research, Maine Medical Center Research Institute, Maine Medical Center, Scarborough, ME, USA
| | - Karen L Houseknecht
- Department of Biomedical Sciences, College of Osteopathic Medicine, University of New England, Biddeford, ME, USA.
| |
Collapse
|
67
|
Aghili H, Yassaei S, Zahir ST, Arjmandi R. Effect of Methylphenidate on Orthodontic Tooth Movement and Histological Features of Bone Tissue in Rats: An Experimental Study. J Clin Diagn Res 2017; 11:ZF01-ZF05. [PMID: 28893054 DOI: 10.7860/jcdr/2017/26217.10169] [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: 12/24/2016] [Accepted: 04/21/2017] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Methylphenidate is a psychostimulant drug, which is commonly used by children and teenagers. This age group receives most orthodontic treatment. Effect of this drug on tooth movement is unknown. AIM The aim of this study was to evaluate the effect of methylphenidate on orthodontic tooth movement and histological features of bone tissue in rats. MATERIALS AND METHODS Forty-two Wistar rats (male) were selected and divided to three groups, randomly (n=14). The control group (Group 1) received no drug, the experimental Group 2 received a constant dose of methylphenidate daily for 14 days while the experimental Group 3 received increasing doses of methylphenidate daily. To exert force, a NiTi coil spring was placed between the maxillary right first molar and the maxillary right central incisor. At the end of the study period, the amount of tooth movement was measured and then the rats were sacrificed for histological analysis of bone tissue. Differences between the experimental groups were analysed using Kruskal-wallis and Mann-Whitney U tests. RESULTS No significant differences were found in the amount of orthodontic tooth movement or osteoclasts and lacunae, between the experimental groups (p>0.05). Mann-Whitney U analysis showed significant differences in the depth of resorption lacuna between Group 2 and 3 (p=0.037). CONCLUSION Methylphenidate has no significant effect on orthodontic tooth movement or histological features of bone tissue in rats.
Collapse
Affiliation(s)
- Hossein Aghili
- Assosiate Professor, Department of Orthodontics, School of Dentistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Soghra Yassaei
- Professor, Department of Orthodontics, School of Dentistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Shokouh Taghipour Zahir
- Professor, Department of Clinical Pathology, Sadoughi Hospital, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Rahele Arjmandi
- Postgraduate Student, Department of Orthodontics, School of Dentistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| |
Collapse
|
68
|
Chen S, Bai B, Lee DJ, Diachina S, Li Y, Wong SW, Wang Z, Tseng HC, Ko CC. Dopaminergic enhancement of cellular adhesion in bone marrow derived mesenchymal stem cells (MSCs). ACTA ACUST UNITED AC 2017; 7. [PMID: 29354319 DOI: 10.4172/2157-7633.1000395] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Dopamine (DA) is a well-known neurotransmitter and critical element in the mussel adhesive protein that has gained increasing attention for its role in cellular growth enhancement in biomaterials, including cellular adhesion improvement. As the mechanism underlying this remains unclear, the objective of this study was to explore the effects of DA on the adhesion properties of bone marrow derived rat mesenchymal stem cells (rMSCs) using an hydroxyapatite gelatin nanocomposite biomaterial and to test whether the effects are mediated through various endogenously expressed DA receptors. Primary rMSCs were pretreated with D1-like antagonist, D2-like antagonist, or a combination of these antagonists followed by treatment with 50 μM DA and cellular adhesion quantification at 0.5, 1, 2 and 4 hours post DA addition. DA was found to increase rMSC adhesion and spreading at the 0.5 hour time-point and the dopaminergic effect on cell adhesion was partially blocked by DA antagonists. In addition, the D1-like and D2-like antagonists appeared to have a similar effect on rMSCs. Immunofluorescent staining indicated that the rMSC spreading area was significantly increased in the DA treated group versus the control group. Treatment of the D1-like DA antagonists with DA revealed that the actin filaments of rMSCs could not connect the membrane with the nucleus. In summary, DA was found to enhance early rMSC adhesion partially via DA receptor activation.
Collapse
Affiliation(s)
- Si Chen
- Oral and Craniofacial Health Sciences Research, School of Dentistry, University of North Carolina, CB #7455, Chapel Hill, NC 27599, USA.,Department of Orthodontics, Peking University School and Hospital of Stomatology, PRC
| | - Bing Bai
- Oral and Craniofacial Health Sciences Research, School of Dentistry, University of North Carolina, CB #7455, Chapel Hill, NC 27599, USA.,Department of Prosthodontics, China Medical University School of Stomatology, PRC
| | - Dong Joon Lee
- Oral and Craniofacial Health Sciences Research, School of Dentistry, University of North Carolina, CB #7455, Chapel Hill, NC 27599, USA
| | - Shannon Diachina
- Oral and Craniofacial Health Sciences Research, School of Dentistry, University of North Carolina, CB #7455, Chapel Hill, NC 27599, USA
| | - Yina Li
- Oral and Craniofacial Health Sciences Research, School of Dentistry, University of North Carolina, CB #7455, Chapel Hill, NC 27599, USA
| | - Sing Wai Wong
- Oral and Craniofacial Health Sciences Research, School of Dentistry, University of North Carolina, CB #7455, Chapel Hill, NC 27599, USA
| | - Zhengyan Wang
- Department of Pediatric Dentistry, University of North Carolina at Chapel Hill, NC, USA
| | - Henry C Tseng
- Duke Eye Center and Department of Ophthalmology, Duke University Medical Center, Durham, NC 27710, USA
| | - Ching-Chang Ko
- Oral and Craniofacial Health Sciences Research, School of Dentistry, University of North Carolina, CB #7455, Chapel Hill, NC 27599, USA.,Department of Orthodontics, School of Dentistry, University of North Carolina, CB #7454, Chapel Hill, NC 27599, USA
| |
Collapse
|
69
|
Yang DH, Moon SW, Jang G, Park K, Yoo Y, Lee DW. Surface modification of titanium with β-CD/polydopamine for a controlled release of lovastatin, and its effect on the enhanced osteogenic activity. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2017.01.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
70
|
Abstract
The primary cilium is a mechanosensor in a variety of mammalian cell types, initiating and directing intracellular signalling cascades in response to external stimuli. When primary cilia formation is disrupted, cells have diminished mechanosensitivity and an abrogated response to mechanical stimulation. Due to this important role, we hypothesised that increasing primary cilia length would enhance the downstream response and therefore, mechanosensitivity. To test this hypothesis, we increased osteocyte primary cilia length with fenoldopam and lithium and found that cells with longer primary cilia were more mechanosensitive. Furthermore, fenoldopam treatment potentiated adenylyl cyclase activity and was able to recover primary cilia form and sensitivity in cells with impaired cilia. This work demonstrates that modulating the structure of the primary cilium directly impacts cellular mechanosensitivity. Our results implicate cilium length as a potential therapeutic target for combating numerous conditions characterised by impaired cilia function.
Collapse
|
71
|
Wang L, Yang X, Cao W, Shi C, Zhou P, Li Q, Han F, Sun J, Xing X, Li B. Mussel-inspired deposition of copper on titanium for bacterial inhibition and enhanced osseointegration in a periprosthetic infection model. RSC Adv 2017. [DOI: 10.1039/c7ra10203h] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Periprosthetic infection represents one of the most devastating complications in orthopedic surgeries.
Collapse
|
72
|
Gao C, Wang Y, Han F, Yuan Z, Li Q, Shi C, Cao W, Zhou P, Xing X, Li B. Antibacterial activity and osseointegration of silver-coated poly(ether ether ketone) prepared using the polydopamine-assisted deposition technique. J Mater Chem B 2017; 5:9326-9336. [DOI: 10.1039/c7tb02436c] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
PEEK-PDA-Ag substrates may be a promising orthopaedic implant material due to the outstanding biocompatibility and antibacterial properties.
Collapse
Affiliation(s)
- Changcheng Gao
- College of Chemistry
- Chemical Engineering and Materials Science
- Orthopaedic Institute
- Soochow University
- Suzhou
| | - Yong Wang
- Department of Orthopedic Surgery
- The Affiliated Yixing Hospital of Jiangsu University
- Wuxi
- China
| | - Fengxuan Han
- College of Chemistry
- Chemical Engineering and Materials Science
- Orthopaedic Institute
- Soochow University
- Suzhou
| | - Zhangqin Yuan
- College of Chemistry
- Chemical Engineering and Materials Science
- Orthopaedic Institute
- Soochow University
- Suzhou
| | - Qiang Li
- College of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing
- China
| | - Chen Shi
- Department of Materials Science and Engineering
- University of California
- Los Angeles
- USA
| | - Weiwei Cao
- College of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing
- China
| | - Pinghui Zhou
- College of Chemistry
- Chemical Engineering and Materials Science
- Orthopaedic Institute
- Soochow University
- Suzhou
| | - Xiaodong Xing
- College of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing
- China
| | - Bin Li
- College of Chemistry
- Chemical Engineering and Materials Science
- Orthopaedic Institute
- Soochow University
- Suzhou
| |
Collapse
|