1
|
Asadian M, Tomasina C, Onyshchenko Y, Chan KV, Norouzi M, Zonderland J, Camarero-Espinosa S, Morent R, De Geyter N, Moroni L. The role of plasma-induced surface chemistry on polycaprolactone nanofibers to direct chondrogenic differentiation of human mesenchymal stem cells. J Biomed Mater Res A 2024; 112:210-230. [PMID: 37706337 DOI: 10.1002/jbm.a.37607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 08/12/2023] [Accepted: 08/24/2023] [Indexed: 09/15/2023]
Abstract
Bone marrow-derived mesenchymal stromal cells (BMSCs) are extensively being utilized for cartilage regeneration owing to their excellent differentiation potential and availability. However, controlled differentiation of BMSCs towards cartilaginous phenotypes to heal full-thickness cartilage defects remains challenging. This study investigates how different surface properties induced by either coating deposition or biomolecules immobilization onto nanofibers (NFs) could affect BMSCs chondro-inductive behavior. Accordingly, electrospun poly(ε-caprolactone) (PCL) NFs were exposed to two surface modification strategies based on medium-pressure plasma technology. The first strategy is plasma polymerization, in which cyclopropylamine (CPA) or acrylic acid (AcAc) monomers were plasma polymerized to obtain amine- or carboxylic acid-rich NFs, respectively. The second strategy uses a combination of CPA plasma polymerization and a post-chemical technique to immobilize chondroitin sulfate (CS) onto the NFs. These modifications could affect surface roughness, hydrophilicity, and chemical composition while preserving the NFs' nano-morphology. The results of long-term BMSCs culture in both basic and chondrogenic media proved that the surface modifications modulated BMSCs chondrogenic differentiation. Indeed, the incorporation of polar groups by different modification strategies had a positive impact on the cell proliferation rate, production of the glycosaminoglycan matrix, and expression of extracellular matrix proteins (collagen I and collagen II). The chondro-inductive behavior of the samples was highly dependent on the nature of the introduced polar functional groups. Among all samples, carboxylic acid-rich NFs promoted chondrogenesis by higher expression of aggrecan, Sox9, and collagen II with downregulation of hypertrophic markers. Hence, this approach showed an intrinsic potential to have a non-hypertrophic chondrogenic cell phenotype.
Collapse
Affiliation(s)
- Mahtab Asadian
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Ghent, Belgium
- Prometheus Division of Skeletal Tissue Engineering, Department of Materials Science, KU Leuven University, Leuven, Belgium
| | - Clarissa Tomasina
- MERLN Institute for Technology-Inspired Regenerative Medicine, Complex Tissue Regeneration Department, Maastricht University, Maastricht, The Netherlands
| | - Yuliia Onyshchenko
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Ghent, Belgium
| | - Ke Vin Chan
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Ghent, Belgium
| | - Mohammad Norouzi
- Department of Pharmacology, University of Montreal, Montreal, Québec, Canada
| | - Jip Zonderland
- MERLN Institute for Technology-Inspired Regenerative Medicine, Complex Tissue Regeneration Department, Maastricht University, Maastricht, The Netherlands
| | - Sandra Camarero-Espinosa
- MERLN Institute for Technology-Inspired Regenerative Medicine, Complex Tissue Regeneration Department, Maastricht University, Maastricht, The Netherlands
- POLYMAT University of the Basque Country UPV/EHU Avenida Tolosa 72, Donostia/San Sebastián, Spain
- IKERBASQUE, Basque Foundation for Science, Euskadi Pl. 5, Bilbao, Spain
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Ghent, Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Ghent, Belgium
| | - Lorenzo Moroni
- MERLN Institute for Technology-Inspired Regenerative Medicine, Complex Tissue Regeneration Department, Maastricht University, Maastricht, The Netherlands
| |
Collapse
|
2
|
Yang KC, Yang YT, Wu CC, Hsiao JK, Huang CY, Chen IH, Wang CC. Bioinspired collagen-gelatin-hyaluronic acid-chondroitin sulfate tetra-copolymer scaffold biomimicking native cartilage extracellular matrix facilitates chondrogenesis of human synovium-derived stem cells. Int J Biol Macromol 2023; 240:124400. [PMID: 37044324 DOI: 10.1016/j.ijbiomac.2023.124400] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 03/15/2023] [Accepted: 04/06/2023] [Indexed: 04/14/2023]
Abstract
The microenvironment plays a crucial role in stem cell differentiation, and a scaffold that mimics native cartilaginous extracellular components can promote chondrogenesis. In this study, a collagen-gelatin-hyaluronic acid-chondroitin sulfate tetra-copolymer scaffold with composition and architecture similar to those of hyaline cartilage was fabricated using a microfluidic technique and compared with a pure gelatin scaffold. The newly designed biomimetic scaffold had a swelling ratio of 1278 % ± 270 %, a porosity of 77.68 % ± 11.70 %, a compressive strength of 1005 ± 174 KPa, and showed a good resilience against compression force. Synovium-derived stem cells (SDSCs) seeded into the tetra-copolymer scaffold attached to the scaffold firmly and exhibited good mitochondrial activity, high cell survival with a pronounced glycosaminoglycan production. SDSCs cultured on the tetra-copolymer scaffold with chondrogenic induction exhibited upregulated mRNA expression of COL2A1, ChM-1, Nrf2, TGF-β1, and BMP-7. Ex vivo study revealed that the SDSC-tetra-copolymer scaffold regenerated cartilage-like tissue in SCID mice with abundant type II collagen and S-100 production. BMP7 and COL2A1 expression in the tetra-copolymer scaffold group was much higher than that in the gelatin scaffold group ex vivo. The tetra-copolymer scaffold thus exhibits strong chondrogenic capability and will facilitate cartilage tissue engineering.
Collapse
Affiliation(s)
- Kai-Chiang Yang
- Department of Orthopedic Surgery, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 231016, Taiwan; School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei 110301, Taiwan; Department of Orthopedics, En Chu Kong Hospital, New Taipei City 237011, Taiwan
| | - Ya-Ting Yang
- Department of Orthopedic Surgery, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 231016, Taiwan
| | - Chang-Chin Wu
- Department of Orthopedics, En Chu Kong Hospital, New Taipei City 237011, Taiwan; Departments of Biomedical Engineering, Yuanpei University of Medical Technology, Hsinchu City 300102, Taiwan
| | - Jong-Kai Hsiao
- Department of Medical Imaging, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 231016, Taiwan
| | - Chien-Yuan Huang
- Department of Orthopedic Surgery, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung City 427213, Taiwan
| | - Ing-Ho Chen
- Department of Orthopedic Surgery, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 231016, Taiwan; Department of Orthopedic Surgery, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien 970473, Taiwan; Department of Orthopedics, School of Medicine, Tzu Chi University, Hualien 970374, Taiwan
| | - Chen-Chie Wang
- Department of Orthopedic Surgery, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 231016, Taiwan; Department of Orthopedics, School of Medicine, Tzu Chi University, Hualien 970374, Taiwan.
| |
Collapse
|
3
|
Huang D, Li Y, Ma Z, Lin H, Zhu X, Xiao Y, Zhang X. Collagen hydrogel viscoelasticity regulates MSC chondrogenesis in a ROCK-dependent manner. SCIENCE ADVANCES 2023; 9:eade9497. [PMID: 36763657 PMCID: PMC9916999 DOI: 10.1126/sciadv.ade9497] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 01/10/2023] [Indexed: 06/18/2023]
Abstract
Mesenchymal stem cell (MSC) chondrogenesis in three-dimensional (3D) culture involves dynamic changes in cytoskeleton architecture during mesenchymal condensation before morphogenesis. However, the mechanism linking dynamic mechanical properties of matrix to cytoskeletal changes during chondrogenesis remains unclear. Here, we investigated how viscoelasticity, a time-dependent mechanical property of collagen hydrogel, coordinates MSC cytoskeleton changes at different stages of chondrogenesis. The viscoelasticity of collagen hydrogel was modulated by controlling the gelling process without chemical cross-linking. In slower-relaxing hydrogels, although a disordered cortical actin promoted early chondrogenic differentiation, persistent myosin hyperactivation resulted in Rho-associated kinase (ROCK)-dependent apoptosis. Meanwhile, faster-relaxing hydrogels promoted cell-matrix interactions and eventually facilitated long-term chondrogenesis with mitigated myosin hyperactivation and cell apoptosis, similar to the effect of ROCK inhibitors. The current work not only reveals how matrix viscoelasticity coordinates MSC chondrogenesis and survival in a ROCK-dependent manner but also highlights viscoelasticity as a design parameter for biomaterials for chondrogenic 3D culture.
Collapse
|
4
|
Nagayama K, Kodama F, Wataya N, Sato A, Matsumoto T. Changes in the intra- and extra-mechanical environment of the nucleus in Saos-2 osteoblastic cells during bone differentiation process: Nuclear shrinkage and stiffening in cell differentiation. J Mech Behav Biomed Mater 2023; 138:105630. [PMID: 36565693 DOI: 10.1016/j.jmbbm.2022.105630] [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: 02/09/2022] [Revised: 12/05/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022]
Abstract
Osteogenic differentiation has been reportedly regulated by various mechanical stresses, including fluid shear stress and tensile and compressive loading. The promotion of osteoblastic differentiation by these mechanical stresses is accompanied by reorganization of the F-actin cytoskeleton, which is deeply involved in intracellular forces and the mechanical environment. However, there is limited information about the effect on the mechanical environment of the intracellular nucleus, such as the mechanical properties of the nucleus and intracellular forces exerted on the nucleus, which have recently been found to be directly involved in various cellular functions. Here, we investigated the changes in the intracellular force applied to the nucleus and the effect on nuclear morphology and mechanical properties during osteogenic differentiation in human osteoblast-like cells (Saos-2). We carried out cell morphological analyses with confocal fluorescence microscopy, nuclear indentation test with atomic force microscopy (AFM), and fluorescence recovery after photobleaching (FRAP) for intranuclear DNA. The results revealed that a significant reorganization of the F-actin cytoskeleton from the nuclear surfaces to the cell periphery occurred in the osteogenic differentiation processes, simultaneously with the reduction of compressive forces to the nucleus. Such changes also facilitated nuclear shrinkage and stiffening, and further intranuclear chromatin compaction. The results indicate that the reduction of the intracellular compressive force due to reorganization of the F-actin cytoskeleton affects the intra- and extra-mechanical environment of the nucleus, and this change may affect gene expression and DNA replication in the osteogenic differentiation process.
Collapse
Affiliation(s)
- Kazuaki Nagayama
- Biomechanics Laboratory, Department of Mechanical Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi, 466-8555, Japan; Micro-Nano Biomechanics Laboratory, Department of Mechanical Systems Engineering, Ibaraki University, Nakanarusawa-cho, Hitachi, Ibaraki, 316-8511, Japan.
| | - Fumiki Kodama
- Biomechanics Laboratory, Department of Mechanical Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi, 466-8555, Japan
| | - Naoki Wataya
- Micro-Nano Biomechanics Laboratory, Department of Mechanical Systems Engineering, Ibaraki University, Nakanarusawa-cho, Hitachi, Ibaraki, 316-8511, Japan
| | - Akiko Sato
- Micro-Nano Biomechanics Laboratory, Department of Mechanical Systems Engineering, Ibaraki University, Nakanarusawa-cho, Hitachi, Ibaraki, 316-8511, Japan
| | - Takeo Matsumoto
- Biomechanics Laboratory, Department of Mechanical Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi, 466-8555, Japan; Biomechanics Laboratory, Department of Mechanical Systems Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8603, Japan
| |
Collapse
|
5
|
Putra VDL, Kilian KA, Knothe Tate ML. Biomechanical, biophysical and biochemical modulators of cytoskeletal remodelling and emergent stem cell lineage commitment. Commun Biol 2023; 6:75. [PMID: 36658332 PMCID: PMC9852586 DOI: 10.1038/s42003-022-04320-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 11/30/2022] [Indexed: 01/20/2023] Open
Abstract
Across complex, multi-time and -length scale biological systems, redundancy confers robustness and resilience, enabling adaptation and increasing survival under dynamic environmental conditions; this review addresses ubiquitous effects of cytoskeletal remodelling, triggered by biomechanical, biophysical and biochemical cues, on stem cell mechanoadaptation and emergent lineage commitment. The cytoskeleton provides an adaptive structural scaffold to the cell, regulating the emergence of stem cell structure-function relationships during tissue neogenesis, both in prenatal development as well as postnatal healing. Identification and mapping of the mechanical cues conducive to cytoskeletal remodelling and cell adaptation may help to establish environmental contexts that can be used prospectively as translational design specifications to target tissue neogenesis for regenerative medicine. In this review, we summarize findings on cytoskeletal remodelling in the context of tissue neogenesis during early development and postnatal healing, and its relevance in guiding lineage commitment for targeted tissue regeneration. We highlight how cytoskeleton-targeting chemical agents modulate stem cell differentiation and govern responses to mechanical cues in stem cells' emerging form and function. We further review methods for spatiotemporal visualization and measurement of cytoskeletal remodelling, as well as its effects on the mechanical properties of cells, as a function of adaptation. Research in these areas may facilitate translation of stem cells' own healing potential and improve the design of materials, therapies, and devices for regenerative medicine.
Collapse
Affiliation(s)
- Vina D L Putra
- School of Chemistry and School of Materials Science & Engineering, University of New South Wales, Sydney, NSW, Australia
| | - Kristopher A Kilian
- School of Chemistry and School of Materials Science & Engineering, University of New South Wales, Sydney, NSW, Australia.
| | - Melissa L Knothe Tate
- Blue Mountains World Interdisciplinary Innovation Institute (bmwi³), Blue Mountains, NSW, Australia.
| |
Collapse
|
6
|
He F, Yang C, Liu H, Wang J. Changes in the mechanical properties of human mesenchymal stem cells during differentiation. ROYAL SOCIETY OPEN SCIENCE 2023; 10:220607. [PMID: 36636310 PMCID: PMC9810430 DOI: 10.1098/rsos.220607] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
A thorough understanding of the changes in mechanical property behind intracellular biophysical and biochemical processes during differentiation of human mesenchymal stem cells (hMSCs) is helpful to direct and enhance the commitment of cells to a particular lineage. In this study, displacement creep of the mesenchymal cell lineages (osteogenic, chondrogenic and adipogenic hMSCs) were determined by using atomic force microscopy, which was then used to determine their mechanical properties. We found that at any stages of differentiation, the mesenchymal cell lineages are linear viscoelastic materials and well matched with a simple power-law creep compliance. In addition, the viscoelasticity of mesenchymal cell lineages showed different trends during differentiation. The adipogenic hMSCs showed continuous softening at all stages. The osteogenic and chondrogenic hMSCs only continuously soften and become more fluid-like in the early stage of differentiation, and get stiffened and less fluid-like in the later stage. These findings will help more accurately imitate cellular biomechanics in the microenvironment, and provided an important reference in the biophysics biomimetic design of stem cell differentiation.
Collapse
Affiliation(s)
- Fei He
- Key Laboratory of Mechanics on Disaster and Environment in Western China, Ministry of Education, College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou, Gansu 730000, People's Republic of China
| | - Chendong Yang
- Key Laboratory of Mechanics on Disaster and Environment in Western China, Ministry of Education, College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou, Gansu 730000, People's Republic of China
| | - Haoye Liu
- Key Laboratory of Mechanics on Disaster and Environment in Western China, Ministry of Education, College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou, Gansu 730000, People's Republic of China
| | - Jizeng Wang
- Key Laboratory of Mechanics on Disaster and Environment in Western China, Ministry of Education, College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou, Gansu 730000, People's Republic of China
| |
Collapse
|
7
|
Yang M, Chen K, Hou C, Yang Y, Zhai X, Chen K, Wei X, Bai Y, Li M. RHOA inhibits chondrogenic differentiation of mesenchymal stem cells in adolescent idiopathic scoliosis. Connect Tissue Res 2022; 63:475-484. [PMID: 35019797 DOI: 10.1080/03008207.2021.2019247] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
PURPOSE The etiology of adolescent idiopathic scoliosis (AIS) remains unclear. The chondrogenic differentiation of mesenchymal stem cells (MSCs) is important in AIS, and the Ras homolog gene family member A (RHOA) is associated with chondrogenesis. The purpose of this study was to explore the effect of RHOA on the chondrogenic differentiation of MSCs in AIS. METHODS We isolated MSCs from patients with AIS (AIS MSCs) and individuals without AIS (control MSCs). The inhibitor Y27632 was used to inhibit the function of RHOA/ROCK signaling, and plasmid-based overexpression and siRNA-mediated knockdown were used to manipulate RHOA expression. CCK-8 was used to detect cell viability. The phosphorylation levels of LIMK1, MLC2 and cofilin were detected by Western blotting. The mRNA expression of aggrecan, SOX9, and COL2A1 were confirmed using RT-PCR. Immunofluorescence was used to analyze F-actin and collagen II. Alcian blue staining was performed to assess the secretion of glycosaminoglycans (GAGs). RESULTS We found that RHOA was significantly upregulated in AIS MSCs, and the phosphorylation levels of LIMK1, MLC2, and cofilin were increased. The mRNA expressions of aggrecan, SOX9, and COL2A1 were notably reduced in AIS MSCs. However, these effects were abolished by Y27632 treatment and RHOA knockdown in AIS MSCs. In addition, RHOA knockdown in AIS MSCs increased the content of collagen II and GAGs. RHOA overexpression in the control MSCs markedly activated the RHOA/ROCK signaling and decreased the expression of aggrecan, SOX9, and COL2A1, F-actin, and GAGs. CONCLUSION RHOA regulates the chondrogenic differentiation ability of MSCs in AIS via the RHOA/ROCK signaling pathway and this regulation may involve SOX9.
Collapse
Affiliation(s)
- Mingyuan Yang
- Department of Orthopedics, Changhai Hospital, Navy Medical University, Shanghai, People's Republic of China
| | - Kai Chen
- Department of Orthopedics, Changhai Hospital, Navy Medical University, Shanghai, People's Republic of China
| | - Canglong Hou
- Department of Orthopedics, Changhai Hospital, Navy Medical University, Shanghai, People's Republic of China
| | - Yilin Yang
- Department of Orthopedics, Changhai Hospital, Navy Medical University, Shanghai, People's Republic of China
| | - Xiao Zhai
- Department of Orthopedics, Changhai Hospital, Navy Medical University, Shanghai, People's Republic of China
| | - Kai Chen
- Department of Orthopedics, Changhai Hospital, Navy Medical University, Shanghai, People's Republic of China
| | - Xianzhao Wei
- Department of Orthopedics, Changhai Hospital, Navy Medical University, Shanghai, People's Republic of China
| | - Yushu Bai
- Department of Orthopedics, Changhai Hospital, Navy Medical University, Shanghai, People's Republic of China
| | - Ming Li
- Department of Orthopedics, Changhai Hospital, Navy Medical University, Shanghai, People's Republic of China
| |
Collapse
|
8
|
Liu S, Kanchanawong P. Emerging interplay of cytoskeletal architecture, cytomechanics and pluripotency. J Cell Sci 2022; 135:275761. [PMID: 35726598 DOI: 10.1242/jcs.259379] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Pluripotent stem cells (PSCs) are capable of differentiating into all three germ layers and trophoblasts, whereas tissue-specific adult stem cells have a more limited lineage potency. Although the importance of the cytoskeletal architecture and cytomechanical properties in adult stem cell differentiation have been widely appreciated, how they contribute to mechanotransduction in PSCs is less well understood. Here, we discuss recent insights into the interplay of cellular architecture, cell mechanics and the pluripotent states of PSCs. Notably, the distinctive cytomechanical and morphodynamic profiles of PSCs are accompanied by a number of unique molecular mechanisms. The extent to which such mechanobiological signatures are intertwined with pluripotency regulation remains an open question that may have important implications in developmental morphogenesis and regenerative medicine.
Collapse
Affiliation(s)
- Shiying Liu
- Mechanobiology Institute, National University of Singapore, Singapore 117411, Republic of Singapore
| | - Pakorn Kanchanawong
- Mechanobiology Institute, National University of Singapore, Singapore 117411, Republic of Singapore.,Department of Biomedical Engineering, National University of Singapore, Singapore 117411, Republic of Singapore
| |
Collapse
|
9
|
Date Y, Matsuura A, Itakura E. Disruption of actin dynamics induces autophagy of the eukaryotic chaperonin TRiC/CCT. Cell Death Dis 2022; 8:37. [PMID: 35079001 PMCID: PMC8789831 DOI: 10.1038/s41420-022-00828-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 12/11/2021] [Accepted: 01/07/2022] [Indexed: 12/26/2022]
Abstract
Autophagy plays important role in the intracellular protein quality control system by degrading abnormal organelles and proteins, including large protein complexes such as ribosomes. The eukaryotic chaperonin tailless complex polypeptide 1 (TCP1) ring complex (TRiC), also called chaperonin-containing TCP1 (CCT), is a 1-MDa hetero-oligomer complex comprising 16 subunits that facilitates the folding of ~10% of the cellular proteome that contains actin. However, the quality control mechanism of TRiC remains unclear. To monitor the autophagic degradation of TRiC, we generated TCP1α-RFP-GFP knock-in HeLa cells using a CRISPR/Cas9-knock-in system with an RFP-GFP donor vector. We analyzed the autophagic degradation of TRiC under several stress conditions and found that treatment with actin (de)polymerization inhibitors increased the lysosomal degradation of TRiC, which was localized in lysosomes and suppressed by deficiency of autophagy-related genes. Furthermore, we found that treatment with actin (de)polymerization inhibitors increased the association between TRiC and unfolded actin, suggesting that TRiC was inactivated. Moreover, unfolded actin mutants were degraded by autophagy. Taken together, our results indicate that autophagy eliminates inactivated TRiC, serving as a quality control system.
Collapse
|
10
|
Parodi V, Jacchetti E, Bresci A, Talone B, Valensise CM, Osellame R, Cerullo G, Polli D, Raimondi MT. Characterization of Mesenchymal Stem Cell Differentiation within Miniaturized 3D Scaffolds through Advanced Microscopy Techniques. Int J Mol Sci 2020; 21:E8498. [PMID: 33187392 PMCID: PMC7696107 DOI: 10.3390/ijms21228498] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 11/06/2020] [Accepted: 11/09/2020] [Indexed: 12/13/2022] Open
Abstract
Three-dimensional culture systems and suitable substrates topographies demonstrated to drive stem cell fate in vitro by mechanical conditioning. For example, the Nichoid 3D scaffold remodels stem cells and shapes nuclei, thus promoting stem cell expansion and stemness maintenance. However, the mechanisms involved in force transmission and in biochemical signaling at the basis of fate determination are not yet clear. Among the available investigation systems, confocal fluorescence microscopy using fluorescent dyes enables the observation of cell function and shape at the subcellular scale in vital and fixed conditions. Contrarily, nonlinear optical microscopy techniques, which exploit multi-photon processes, allow to study cell behavior in vital and unlabeled conditions. We apply confocal fluorescence microscopy, coherent anti-Stokes Raman scattering (CARS), and second harmonic generation (SHG) microscopy to characterize the phenotypic expression of mesenchymal stem cells (MSCs) towards adipogenic and chondrogenic differentiation inside Nichoid scaffolds, in terms of nuclear morphology and specific phenotypic products, by comparing these techniques. We demonstrate that the Nichoid maintains a rounded nuclei during expansion and differentiation, promoting MSCs adipogenic differentiation while inhibiting chondrogenesis. We show that CARS and SHG techniques are suitable for specific estimation of the lipid and collagenous content, thus overcoming the limitations of using unspecific fluorescent probes.
Collapse
Affiliation(s)
- Valentina Parodi
- Department of Chemistry, Materials and Chemical Engineering «G. Natta», Politecnico di Milano, 20133 Milano, Italy; (E.J.); (A.B.); (M.T.R.)
| | - Emanuela Jacchetti
- Department of Chemistry, Materials and Chemical Engineering «G. Natta», Politecnico di Milano, 20133 Milano, Italy; (E.J.); (A.B.); (M.T.R.)
| | - Arianna Bresci
- Department of Chemistry, Materials and Chemical Engineering «G. Natta», Politecnico di Milano, 20133 Milano, Italy; (E.J.); (A.B.); (M.T.R.)
- Department of Physics, Politecnico di Milano, 20133 Milano, Italy; (B.T.); (C.M.V.); (R.O.); (G.C.); (D.P.)
- Istituto di Fotonica e Nanotecnologie (IFN), Consiglio Nazionale delle Ricerche (CNR), 20133 Milano, Italy
| | - Benedetta Talone
- Department of Physics, Politecnico di Milano, 20133 Milano, Italy; (B.T.); (C.M.V.); (R.O.); (G.C.); (D.P.)
- Istituto di Fotonica e Nanotecnologie (IFN), Consiglio Nazionale delle Ricerche (CNR), 20133 Milano, Italy
| | - Carlo M. Valensise
- Department of Physics, Politecnico di Milano, 20133 Milano, Italy; (B.T.); (C.M.V.); (R.O.); (G.C.); (D.P.)
- Istituto di Fotonica e Nanotecnologie (IFN), Consiglio Nazionale delle Ricerche (CNR), 20133 Milano, Italy
| | - Roberto Osellame
- Department of Physics, Politecnico di Milano, 20133 Milano, Italy; (B.T.); (C.M.V.); (R.O.); (G.C.); (D.P.)
- Istituto di Fotonica e Nanotecnologie (IFN), Consiglio Nazionale delle Ricerche (CNR), 20133 Milano, Italy
| | - Giulio Cerullo
- Department of Physics, Politecnico di Milano, 20133 Milano, Italy; (B.T.); (C.M.V.); (R.O.); (G.C.); (D.P.)
- Istituto di Fotonica e Nanotecnologie (IFN), Consiglio Nazionale delle Ricerche (CNR), 20133 Milano, Italy
| | - Dario Polli
- Department of Physics, Politecnico di Milano, 20133 Milano, Italy; (B.T.); (C.M.V.); (R.O.); (G.C.); (D.P.)
- Istituto di Fotonica e Nanotecnologie (IFN), Consiglio Nazionale delle Ricerche (CNR), 20133 Milano, Italy
| | - Manuela T. Raimondi
- Department of Chemistry, Materials and Chemical Engineering «G. Natta», Politecnico di Milano, 20133 Milano, Italy; (E.J.); (A.B.); (M.T.R.)
| |
Collapse
|
11
|
Khan AU, Qu R, Fan T, Ouyang J, Dai J. A glance on the role of actin in osteogenic and adipogenic differentiation of mesenchymal stem cells. Stem Cell Res Ther 2020; 11:283. [PMID: 32678016 PMCID: PMC7364498 DOI: 10.1186/s13287-020-01789-2] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 05/13/2020] [Accepted: 06/23/2020] [Indexed: 12/24/2022] Open
Abstract
Mesenchymal stem cells (MSCs) have the capacity to differentiate into multiple lineages including osteogenic and adipogenic lineages. An increasing number of studies have indicated that lineage commitment by MSCs is influenced by actin remodeling. Moreover, actin has roles in determining cell shape, nuclear shape, cell spreading, and cell stiffness, which eventually affect cell differentiation. Osteogenic differentiation is promoted in MSCs that exhibit a large spreading area, increased matrix stiffness, higher levels of actin polymerization, and higher density of stress fibers, whereas adipogenic differentiation is prevalent in MSCs with disrupted actin networks. In addition, the mechanical properties of F-actin empower cells to sense and transduce mechanical stimuli, which are also reported to influence differentiation. Various biomaterials, mechanical, and chemical interventions along with pathogen-induced actin alteration in the form of polymerization and depolymerization in MSC differentiation were studied recently. This review will cover the role of actin and its modifications through the use of different methods in inducing osteogenic and adipogenic differentiation.
Collapse
Affiliation(s)
- Asmat Ullah Khan
- Guangdong Provincial Key Laboratory of Medical Biomechanics, Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou, China
| | - Rongmei Qu
- Guangdong Provincial Key Laboratory of Medical Biomechanics, Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou, China
| | - Tingyu Fan
- Guangdong Provincial Key Laboratory of Medical Biomechanics, Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou, China
| | - Jun Ouyang
- Guangdong Provincial Key Laboratory of Medical Biomechanics, Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou, China
| | - Jingxing Dai
- Guangdong Provincial Key Laboratory of Medical Biomechanics, Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou, China
| |
Collapse
|
12
|
Yang KC, Chen IH, Yang YT, Hsiao JK, Wang CC. Effects of scaffold geometry on chondrogenic differentiation of adipose-derived stem cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 110:110733. [DOI: 10.1016/j.msec.2020.110733] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 01/18/2020] [Accepted: 02/05/2020] [Indexed: 01/01/2023]
|
13
|
Liang Y, Szojka ARA, Idrees E, Kunze M, Mulet-Sierra A, Adesida AB. Re-Differentiation of Human Meniscus Fibrochondrocytes Differs in Three-Dimensional Cell Aggregates and Decellularized Human Meniscus Matrix Scaffolds. Ann Biomed Eng 2020; 48:968-979. [PMID: 31147805 DOI: 10.1007/s10439-019-02272-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 04/11/2019] [Indexed: 02/07/2023]
Abstract
Decellularized matrix (DCM) derived from native tissues may be a promising supporting material to induce cellular differentiation by sequestered bioactive factors. However, no previous study has investigated the use of human meniscus-derived DCM to re-differentiate human meniscus fibrochondrocytes (MFCs) to form meniscus-like extracellular matrix (ECM). We expanded human MFCs and seeded them upon a cadaveric meniscus-derived DCM prepared by physical homogenization under hypoxia. To assess the bioactivity of the DCM, we used conditions with and without chondrogenic factor TGF-β3 and set up a cell pellet culture model as a biomaterial-free control. We found that the DCM supported chondrogenic re-differentiation and ECM formation of MFCs only in the presence of exogenous TGF-β3. Chondrogenic re-differentiation was more robust at the protein level in the pellet model as MFCs on the DCM appeared to favour a more proliferative phenotype. Interestingly, without growth factors, the DCM tended to promote expression of hypertrophic differentiation markers relative to the pellet model. Therefore, the human meniscus-derived DCM prepared by physical homogenization contained insufficient bioactive factors to induce appreciable ECM formation by human MFCs.
Collapse
Affiliation(s)
- Yan Liang
- Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, Li Ka Shing Centre for Health Research Innovation (3.002E), Divisions of Orthopaedic Surgery and Surgical Research, Department of Surgery, University of Alberta, Edmonton, T6G 2E1, Canada
- Division of Burn and Reconstructive Surgery, Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, People's Republic of China
| | - Alexander R A Szojka
- Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, Li Ka Shing Centre for Health Research Innovation (3.002E), Divisions of Orthopaedic Surgery and Surgical Research, Department of Surgery, University of Alberta, Edmonton, T6G 2E1, Canada
| | - Enaam Idrees
- Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, Li Ka Shing Centre for Health Research Innovation (3.002E), Divisions of Orthopaedic Surgery and Surgical Research, Department of Surgery, University of Alberta, Edmonton, T6G 2E1, Canada
| | - Melanie Kunze
- Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, Li Ka Shing Centre for Health Research Innovation (3.002E), Divisions of Orthopaedic Surgery and Surgical Research, Department of Surgery, University of Alberta, Edmonton, T6G 2E1, Canada
| | - Aillette Mulet-Sierra
- Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, Li Ka Shing Centre for Health Research Innovation (3.002E), Divisions of Orthopaedic Surgery and Surgical Research, Department of Surgery, University of Alberta, Edmonton, T6G 2E1, Canada
| | - Adetola B Adesida
- Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, Li Ka Shing Centre for Health Research Innovation (3.002E), Divisions of Orthopaedic Surgery and Surgical Research, Department of Surgery, University of Alberta, Edmonton, T6G 2E1, Canada.
| |
Collapse
|
14
|
Saidova AA, Vorobjev IA. Lineage Commitment, Signaling Pathways, and the Cytoskeleton Systems in Mesenchymal Stem Cells. TISSUE ENGINEERING PART B-REVIEWS 2019; 26:13-25. [PMID: 31663422 DOI: 10.1089/ten.teb.2019.0250] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Mesenchymal stem cells (MSCs) from adult tissues are promising candidates for personalized cell therapy and tissue engineering. Significant progress was achieved in our understanding of the regulation of MSCs proliferation and differentiation by different cues during the past years. Proliferation and differentiation of MSCs are sensitive to the extracellular matrix (ECM) properties, physical cues, and chemical signaling. Sheath stress, matrix stiffness, surface adhesiveness, and micro- and nanotopography define cell shape and dictate lineage commitment of MSCs even in the absence of specific chemical signals. We discuss mechanotransduction as the major route from ECM through the cytoskeleton toward signaling pathways and gene expression. All components of the cytoskeleton from primary cilium and focal adhesions (FAs) to actin, microtubules (MTs), and intermediate filaments (IFs) are involved in the mechanotransduction. Differentiation of MSCs is regulated via the complex network of interrelated signaling pathways, including RhoA/ROCK, Akt/Erk, and YAP/TAZ effectors of Hippo pathway. These pathways could be regulated both by chemical and mechanical stimuli. Attenuation of these pathways in MSCs results in specific changes in FAs and actin cytoskeleton. Besides, differentiation of MSCs affects MTs and IFs. Recent findings highlight the role of intranuclear actin in the regulation of transcription factors in response to mechanical environmental stimuli. Alterations of cytoskeletal components reflect the MSC senescence state and their migratory capacity. In this review, we discuss the relationships between the molecular interactions in signaling pathways and morphological response of cytoskeletal components and reveal the complex interrelations between cytoskeleton systems and signaling pathways during lineage commitment of MSCs. Impact Statement This review describes the complex network of relationships between mechanical and biochemical stimuli in mesenchymal stem cells (MSC) and their balance which defines the morphological changes of cell shape due to rearrangement of cytoskeletal systems during lineage commitment of MSCs.
Collapse
Affiliation(s)
- Aleena A Saidova
- Biological Faculty, M.V. Lomonosov Moscow State University, Moscow, Russia.,Center of Experimental Embryology and Reproductive Biotechnology, Moscow, Russia
| | - Ivan A Vorobjev
- Biological Faculty, M.V. Lomonosov Moscow State University, Moscow, Russia.,A.N. Belozersky Institute of Physico-Chemical Biology, M.V. Lomonosov Moscow State University, Moscow, Russia.,Department of Biology, School of Science and Humanities and National Laboratory Astana, Nazarbayev University, Nur-Sultan, Kazakhstan
| |
Collapse
|
15
|
Lee H, Kang S, Sonn JK, Lim YB. Dopamine receptor D 2 activation suppresses the radiosensitizing effect of aripiprazole via activation of AMPK. FEBS Open Bio 2019; 9:1580-1588. [PMID: 31301124 PMCID: PMC6722896 DOI: 10.1002/2211-5463.12699] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 06/12/2019] [Accepted: 07/12/2019] [Indexed: 12/31/2022] Open
Abstract
Drug repositioning has garnered attention as an alternative strategy to the discovery and development of novel anticancer drug candidates. In this study, we screened 321 FDA-approved drugs against nonirradiated and irradiated MCF-7 cells, revealing that aripiprazole, a dopamine receptor D2 (D2R) partial agonist, enhances the radiosensitivity of MCF-7 cells. Unexpectedly, D2R-selective antagonist treatment significantly enhanced the radiosensitizing effects of aripiprazole and prevented aripiprazole-induced 5' adenosine monophosphate-activated protein kinase (AMPK) phosphorylation. Direct AMPK activation with A769662 treatment blunted the radiosensitizing effects of aripiprazole. These results indicate that aripiprazole has potential as a radiosensitizing drug. Furthermore, prevention of D2R/AMPK activation might enhance these anticancer effects of aripiprazole in breast cancer cells.
Collapse
Affiliation(s)
- Hyounji Lee
- Division of Radiation Biomedical Research, Korea Institute of Radiological and Medical Sciences, Seoul, Korea
| | - Seongman Kang
- Division of Life Science, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Jong Kyung Sonn
- Department of Biology, College of Natural Sciences, Kyungpook National University, Daegu, Korea
| | - Young-Bin Lim
- Division of Radiation Biomedical Research, Korea Institute of Radiological and Medical Sciences, Seoul, Korea
| |
Collapse
|
16
|
Mishra P, Martin DC, Androulakis IP, Moghe PV. Fluorescence Imaging of Actin Turnover Parses Early Stem Cell Lineage Divergence and Senescence. Sci Rep 2019; 9:10377. [PMID: 31316098 PMCID: PMC6637207 DOI: 10.1038/s41598-019-46682-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 06/27/2019] [Indexed: 02/07/2023] Open
Abstract
This study describes a new approach to discern early divergence in stem cell lineage progression via temporal dynamics of the cytoskeletal protein, F-actin. The approach involves real-time labeling of human mesenchymal stem cells (MSCs) and longitudinal tracking of the turnover dynamics of a fluorogenic F-actin specific probe, SiR-actin (SA). Cells cultured in media with distinct lineage factors and labeled with SA showed lineage specific reduction in the actin turnover shortly after adipogenic (few minutes) and chondrogenic (3–4 hours) commitment in contrast to osteogenic and basal cultured conditions. Next, composite staining of SA along with the competing F-actin specific fluorescent conjugate, phalloidin, and high-content image analysis of the complementary labels showed clear phenotypic parsing of the sub-populations as early as 1-hour post-induction across all three lineages. Lastly, the potential of SA-based actin turnover analysis to distinguish cellular aging was explored. In-vitro aged cells were found to have reduced actin turnover within 1-hour of simultaneous analysis in comparison to cells of earlier passage. In summary, SiR-actin fluorescent reporter imaging offers a new platform to sensitively monitor emergent lineage phenotypes during differentiation and aging and resolve some of the earliest evident differences in actin turnover dynamics.
Collapse
Affiliation(s)
- Prakhar Mishra
- Cell and Developmental Biology graduate program in Molecular Biosciences, Rutgers University, Piscataway, NJ, 08854, USA
| | - Daniel C Martin
- Department of Biomedical Engineering, Rutgers University, Piscataway, NJ, 08854, USA
| | - Ioannis P Androulakis
- Department of Biomedical Engineering, Rutgers University, Piscataway, NJ, 08854, USA
| | - Prabhas V Moghe
- Department of Biomedical Engineering, Rutgers University, Piscataway, NJ, 08854, USA. .,Department of Chemical and Biochemical Engineering, Rutgers University, Piscataway, NJ, 08854, USA.
| |
Collapse
|
17
|
Prasopthum A, Cooper M, Shakesheff KM, Yang J. Three-Dimensional Printed Scaffolds with Controlled Micro-/Nanoporous Surface Topography Direct Chondrogenic and Osteogenic Differentiation of Mesenchymal Stem Cells. ACS APPLIED MATERIALS & INTERFACES 2019; 11:18896-18906. [PMID: 31067023 DOI: 10.1021/acsami.9b01472] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The effect of topography in three-dimensional (3D) printed polymer scaffolds on stem cell differentiation is a significantly underexplored area. Compared to two-dimensional (2D) biomaterials on which various well-defined topographies have been incorporated and shown to direct a range of cell behaviors including adhesion, cytoskeleton organization, and differentiation, incorporating topographical features to 3D polymer scaffolds is challenging due to the difficulty of accessing the inside of a porous scaffold. Only the roughened strut surface has been introduced to 3D printed porous scaffolds. Here, a rapid, single-step 3D printing method to fabricate polymeric scaffolds consisting of microstruts (ca. 60 μm) with micro-/nanosurface pores (0.2-2.4 μm) has been developed based on direct ink writing of an agitated viscous polymer solution. The density, size, and alignment of these pores can be controlled by changing the degree of agitation or the speed of printing. Three-dimensional printed scaffolds with micro-/nanoporous struts enhanced chondrogenic and osteogenic differentiation of mesenchymal stem cells (MSCs) without soluble differentiation factors. The topography also selectively affected adhesion, morphology, and differentiation of MSC to chondrogenic and osteogenic lineages depending on the composition of the differentiation medium. This fabrication method can potentially be used for a wide range of polymers where desirable architecture and topography are required.
Collapse
|
18
|
Zhou S, Chen S, Jiang Q, Pei M. Determinants of stem cell lineage differentiation toward chondrogenesis versus adipogenesis. Cell Mol Life Sci 2019; 76:1653-1680. [PMID: 30689010 PMCID: PMC6456412 DOI: 10.1007/s00018-019-03017-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 12/10/2018] [Accepted: 01/15/2019] [Indexed: 12/12/2022]
Abstract
Adult stem cells, also termed as somatic stem cells, are undifferentiated cells, detected among differentiated cells in a tissue or an organ. Adult stem cells can differentiate toward lineage specific cell types of the tissue or organ in which they reside. They also have the ability to differentiate into mature cells of mesenchymal tissues, such as cartilage, fat and bone. Despite the fact that the balance has been comprehensively scrutinized between adipogenesis and osteogenesis and between chondrogenesis and osteogenesis, few reviews discuss the relationship between chondrogenesis and adipogenesis. In this review, the developmental and transcriptional crosstalk of chondrogenic and adipogenic lineages are briefly explored, followed by elucidation of signaling pathways and external factors guiding lineage determination between chondrogenic and adipogenic differentiation. An in-depth understanding of overlap and discrepancy between these two mesenchymal tissues in lineage differentiation would benefit regeneration of high-quality cartilage tissues and adipose tissues for clinical applications.
Collapse
Affiliation(s)
- Sheng Zhou
- Stem Cell and Tissue Engineering Laboratory, Department of Orthopaedics, West Virginia University, 64 Medical Center Drive, PO Box 9196, Morgantown, WV, 26506-9196, USA
- Department of Sports Medicine and Adult Reconstructive Surgery, School of Medicine, Drum Tower Hospital, Nanjing University, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, People's Republic of China
| | - Song Chen
- Department of Orthopaedics, Chengdu Military General Hospital, Chengdu, 610083, Sichuan, People's Republic of China
| | - Qing Jiang
- Department of Sports Medicine and Adult Reconstructive Surgery, School of Medicine, Drum Tower Hospital, Nanjing University, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, People's Republic of China
| | - Ming Pei
- Stem Cell and Tissue Engineering Laboratory, Department of Orthopaedics, West Virginia University, 64 Medical Center Drive, PO Box 9196, Morgantown, WV, 26506-9196, USA.
- Robert C. Byrd Health Sciences Center, WVU Cancer Institute, West Virginia University, Morgantown, WV, 26506, USA.
| |
Collapse
|
19
|
Lee ES, Kim JS, Lee H, Ryu JY, Lee HJ, Sonn JK, Lim YB. Auranofin, an Anti-rheumatic Gold Drug, Aggravates the Radiation-Induced Acute Intestinal Injury in Mice. Front Pharmacol 2019; 10:417. [PMID: 31105565 PMCID: PMC6492527 DOI: 10.3389/fphar.2019.00417] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 04/02/2019] [Indexed: 12/20/2022] Open
Abstract
Pelvic and abdominal radiotherapy plays an important role in eradication of malignant cells; however, it also results in slight intestinal injury. The apoptosis of cells in the intestinal epithelium is a primary pathological factor that initiates radiation-induced intestinal injury. Auranofin, a gold-containing triethylphosphine, was approved for the treatment of rheumatoid arthritis, and its therapeutic application has been expanded to a number of other diseases, such as parasitic infections, neurodegenerative disorders, AIDS, and bacterial infections. Recently, a treatment strategy combining the use of auranofin and ionizing radiation aimed at increasing the radiosensitivity of cancer cells was proposed for improving the control of local cancers. In this study, we evaluated the effect of auranofin on the radiosensitivity of intestinal epithelial cells. The treatment with a combination of 1 μM auranofin and 5 Gy ionizing radiation showed clear additive effects on caspase 3 cleavage and apoptotic DNA fragmentation in IEC-6 cells, and auranofin administration significantly aggravated the radiation-induced intestinal injury in mice. Auranofin treatment also resulted in the activation of the unfolded protein response and in the inhibition of thioredoxin reductase, which is a key component of the cellular antioxidant system. Pre-treatment with N-acetyl cysteine, a well-known scavenger of reactive oxygen species, but not with a chemical chaperone, which inhibits endoplasmic reticulum stress and the ensuing unfolded protein response, significantly reduced the radiosensitizing effects of auranofin in the IEC-6 cells. In addition, transfection of IEC-6 cells with a small interfering RNA targeted against thioredoxin reductase significantly enhanced the radiosensitivity of these cells. These results suggest that auranofin-induced radiosensitization of intestinal epithelial cells is mediated through oxidative stress caused by the deregulation of thioredoxin redox system, and auranofin treatment can be an independent risk factor for the development of acute pelvic radiation disease.
Collapse
Affiliation(s)
- Eun Sang Lee
- Division of Radiation Biomedical Research, Korea Institute of Radiological and Medical Sciences, Seoul, South Korea
| | - Joong Sun Kim
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, Daejeon, South Korea
| | - Hyounji Lee
- Division of Radiation Biomedical Research, Korea Institute of Radiological and Medical Sciences, Seoul, South Korea
| | - Jee-Yeon Ryu
- Division of Radiation Biomedical Research, Korea Institute of Radiological and Medical Sciences, Seoul, South Korea
| | - Hae-June Lee
- Division of Radiation Biomedical Research, Korea Institute of Radiological and Medical Sciences, Seoul, South Korea
| | - Jong Kyung Sonn
- Department of Biology, College of Natural Sciences, Kyungpook National University, Daegu, South Korea
| | - Young-Bin Lim
- Division of Radiation Biomedical Research, Korea Institute of Radiological and Medical Sciences, Seoul, South Korea
| |
Collapse
|
20
|
Kim H, Kim DH, Jeong B, Kim JH, Lee SR, Sonn JK. Blebbistatin induces chondrogenesis of single mesenchymal cells via PI3K/PDK1/mTOR/p70S6K pathway. Biologia (Bratisl) 2017. [DOI: 10.1515/biolog-2017-0078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
21
|
Nalluri SM, Krishnan GR, Cheah C, Arzumand A, Yuan Y, Richardson CA, Yang S, Sarkar D. Hydrophilic polyurethane matrix promotes chondrogenesis of mesenchymal stem cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 54:182-95. [PMID: 26046282 PMCID: PMC5201126 DOI: 10.1016/j.msec.2015.05.043] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2015] [Revised: 03/20/2015] [Accepted: 05/11/2015] [Indexed: 12/13/2022]
Abstract
Segmental polyurethanes exhibit biphasic morphology and can control cell fate by providing distinct matrix guided signals to increase the chondrogenic potential of mesenchymal stem cells (MSCs). Polyethylene glycol (PEG) based hydrophilic polyurethanes can deliver differential signals to MSCs through their matrix phases where hard segments are cell-interactive domains and PEG based soft segments are minimally interactive with cells. These coordinated communications can modulate cell-matrix interactions to control cell shape and size for chondrogenesis. Biphasic character and hydrophilicity of polyurethanes with gel like architecture provide a synthetic matrix conducive for chondrogenesis of MSCs, as evidenced by deposition of cartilage-associated extracellular matrix. Compared to monophasic hydrogels, presence of cell interactive domains in hydrophilic polyurethanes gels can balance cell-cell and cell-matrix interactions. These results demonstrate the correlation between lineage commitment and the changes in cell shape, cell-matrix interaction, and cell-cell adhesion during chondrogenic differentiation which is regulated by polyurethane phase morphology, and thus, represent hydrophilic polyurethanes as promising synthetic matrices for cartilage regeneration.
Collapse
Affiliation(s)
- Sandeep M Nalluri
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - G Rajesh Krishnan
- Department of Biomedical Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Calvin Cheah
- Department of Biomedical Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Ayesha Arzumand
- Department of Biomedical Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Yuan Yuan
- Department of Biomedical Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Caley A Richardson
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Shuying Yang
- Department of Oral Biology, School of Dental Medicine, University at Buffalo, The State University of New York, Buffalo, NY 14214, USA
| | - Debanjan Sarkar
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA; Department of Biomedical Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA.
| |
Collapse
|
22
|
Kopecká M, Yamaguchi M, Kawamoto S. The effects of the F-actin inhibitor latrunculin A on the pathogenic yeast Cryptococcus neoformans. Chemotherapy 2015; 60:185-90. [PMID: 25823986 DOI: 10.1159/000377619] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 02/02/2015] [Indexed: 11/19/2022]
Abstract
BACKGROUND This basic research aimed to investigate the effects of the actin inhibitor latrunculin A (LA) on the human pathogen Cryptococcus neoformans, by freeze-substitution (FS) and electron microscopy (EM), to determine whether the actin cytoskeleton can become a new antifungal target for inhibition of cell division. METHODS Cells treated with LA for 20 h in yeast-extract peptone dextrose medium were investigated by phase-contrast and fluorescent microscopy, FS and transmission EM, counted in a Bürker chamber and the absorbance was then measured. RESULTS The disappearance of actin patches, actin cables and actin rings demonstrated the response of the cells of C. neoformans to the presence of the actin inhibitor LA. The removal of actin cables and patches arrested proliferation and led to the production of cells that had ultrastructural disorder, irregular morphology of the mitochondria and thick aberrant cell walls. Budding cells lysed in the buds and septa. CONCLUSION LA exerts fungistatic, fungicidal and fungilytic effects on the human pathogenic yeast C. neoformans.
Collapse
Affiliation(s)
- Marie Kopecká
- Department of Biology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | | | | |
Collapse
|
23
|
Li Z, Cao B, Wang X, Ye K, Li S, Ding J. Effects of RGD nanospacing on chondrogenic differentiation of mesenchymal stem cells. J Mater Chem B 2015; 3:5197-5209. [DOI: 10.1039/c5tb00455a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
RGD nanopatterns were generated on nonfouling PEG hydrogels to explore the effects of RGD nanospacing on adhesion and chondrogenic differentiation of mesenchymal stem cells.
Collapse
Affiliation(s)
- Zhenhua Li
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Polymers and Polymer Composite Materials
- Department of Macromolecular Science
- Advanced Materials Laboratory
- Fudan University
| | - Bin Cao
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Polymers and Polymer Composite Materials
- Department of Macromolecular Science
- Advanced Materials Laboratory
- Fudan University
| | - Xuan Wang
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Polymers and Polymer Composite Materials
- Department of Macromolecular Science
- Advanced Materials Laboratory
- Fudan University
| | - Kai Ye
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Polymers and Polymer Composite Materials
- Department of Macromolecular Science
- Advanced Materials Laboratory
- Fudan University
| | - Shiyu Li
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Polymers and Polymer Composite Materials
- Department of Macromolecular Science
- Advanced Materials Laboratory
- Fudan University
| | - Jiandong Ding
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Polymers and Polymer Composite Materials
- Department of Macromolecular Science
- Advanced Materials Laboratory
- Fudan University
| |
Collapse
|
24
|
|
25
|
Lach M, Trzeciak T, Richter M, Pawlicz J, Suchorska WM. Directed differentiation of induced pluripotent stem cells into chondrogenic lineages for articular cartilage treatment. J Tissue Eng 2014; 5:2041731414552701. [PMID: 25383175 PMCID: PMC4221915 DOI: 10.1177/2041731414552701] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Accepted: 09/02/2014] [Indexed: 12/12/2022] Open
Abstract
In recent years, increases in the number of articular cartilage injuries caused by environmental factors or pathological conditions have led to a notable rise in the incidence of premature osteoarthritis. Osteoarthritis, considered a disease of civilization, is the leading cause of disability. At present, standard methods for treating damaged articular cartilage, including autologous chondrocyte implantation or microfracture, are short-term solutions with important side effects. Emerging treatments include the use of induced pluripotent stem cells, a technique that could provide a new tool for treatment of joint damage. However, research in this area is still early, and no optimal protocol for transforming induced pluripotent stem cells into chondrocytes has yet been established. Developments in our understanding of cartilage developmental biology, together with the use of modern technologies in the field of tissue engineering, provide an opportunity to create a complete functional model of articular cartilage.
Collapse
Affiliation(s)
- Michał Lach
- Radiobiology Laboratory, Greater Poland Cancer Centre, Poznan, Poland
| | - Tomasz Trzeciak
- Department of Orthopedics and Traumatology, Poznan University of Medical Sciences, Poznan, Poland
| | - Magdalena Richter
- Department of Orthopedics and Traumatology, Poznan University of Medical Sciences, Poznan, Poland
| | - Jarosław Pawlicz
- Department of Orthopedics and Traumatology, Poznan University of Medical Sciences, Poznan, Poland
| | | |
Collapse
|
26
|
Lee ES, Lee HJ, Lee YJ, Jeong JH, Kang S, Lim YB. Chemical chaperones reduce ionizing radiation-induced endoplasmic reticulum stress and cell death in IEC-6 cells. Biochem Biophys Res Commun 2014; 450:1005-9. [PMID: 24973711 DOI: 10.1016/j.bbrc.2014.06.091] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Accepted: 06/18/2014] [Indexed: 11/16/2022]
Abstract
Radiotherapy, which is one of the most effective approaches to the treatment of various cancers, plays an important role in malignant cell eradication in the pelvic area and abdomen. However, it also generates some degree of intestinal injury. Apoptosis in the intestinal epithelium is the primary pathological factor that initiates radiation-induced intestinal injury, but the mechanism by which ionizing radiation (IR) induces apoptosis in the intestinal epithelium is not clearly understood. Recently, IR has been shown to induce endoplasmic reticulum (ER) stress, thereby activating the unfolded protein response (UPR) signaling pathway in intestinal epithelial cells. However, the consequences of the IR-induced activation of the UPR signaling pathway on radiosensitivity in intestinal epithelial cells remain to be determined. In this study, we investigated the role of ER stress responses in IR-induced intestinal epithelial cell death. We show that chemical ER stress inducers, such as tunicamycin or thapsigargin, enhanced IR-induced caspase 3 activation and DNA fragmentation in intestinal epithelial cells. Knockdown of Xbp1 or Atf6 with small interfering RNA inhibited IR-induced caspase 3 activation. Treatment with chemical chaperones prevented ER stress and subsequent apoptosis in IR-exposed intestinal epithelial cells. Our results suggest a pro-apoptotic role of ER stress in IR-exposed intestinal epithelial cells. Furthermore, inhibiting ER stress may be an effective strategy to prevent IR-induced intestinal injury.
Collapse
Affiliation(s)
- Eun Sang Lee
- Division of Radiation Effects, Korea Institute of Radiological and Medical Sciences, Seoul 139-706, Republic of Korea
| | - Hae-June Lee
- Division of Radiation Effects, Korea Institute of Radiological and Medical Sciences, Seoul 139-706, Republic of Korea
| | - Yoon-Jin Lee
- Division of Radiation Effects, Korea Institute of Radiological and Medical Sciences, Seoul 139-706, Republic of Korea
| | - Jae-Hoon Jeong
- Division of Radiotherapy, Korea Institute of Radiological and Medical Sciences, Seoul 139-706, Republic of Korea
| | - Seongman Kang
- Division of Life Sciences, Korea University, Seoul 136-701, Republic of Korea
| | - Young-Bin Lim
- Division of Radiation Effects, Korea Institute of Radiological and Medical Sciences, Seoul 139-706, Republic of Korea.
| |
Collapse
|
27
|
Kim EJ, Lee YJ, Kang S, Lim YB. Ionizing radiation activates PERK/eIF2α/ATF4 signaling via ER stress-independent pathway in human vascular endothelial cells. Int J Radiat Biol 2014; 90:306-12. [PMID: 24456547 DOI: 10.3109/09553002.2014.886793] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
PURPOSE Perturbations in protein folding induce endoplasmic reticulum (ER) stress, which elicits coordinated response, namely the unfolded protein response (UPR), to cope with the accumulation of misfolded proteins in ER. In this study, we characterized mechanisms underlying ionizing radiation (IR)-induced UPR signaling pathways. MATERIALS AND METHODS We analyzed alterations in UPR signaling pathways in human umbilical vein endothelial cells (HUVEC) and human coronary artery endothelial cells (HCAEC) irradiated with 15 Gy IR. RESULTS IR selectively activated the eIF2α/ATF4 branch of the UPR signaling pathway, with no alterations in the IRE1 and ATF6 branches in HUVEC and HCAEC. Phosphorylation of PERK was enhanced in response to IR, and the IR-induced activation of the eIF2α/ATF4 signaling pathway was completely inhibited by PERK knockdown with siRNA. Surprisingly, chemical chaperones, which inhibit the formation of misfolded proteins and sequential protein aggregates to reduce ER stress, failed to prevent the IR-induced phosphorylation of PERK and the subsequent activation of the eIF2α/ATF4 signaling pathway. CONCLUSIONS PERK mediates the IR-induced selective activation of the eIF2α/ATF4 signaling pathway, and the IR-induced activation of PERK/eIF2α/ATF4 signaling in human vascular endothelial cells is independent of alterations in protein-folding homeostasis in the ER.
Collapse
Affiliation(s)
- Eun Ju Kim
- Division of Radiation Effects, Korea Institute of Radiological and Medical Sciences , Seoul
| | | | | | | |
Collapse
|
28
|
Aw Yong KM, Zeng Y, Vindivich D, Phillip JM, Wu PH, Wirtz D, Getzenberg RH. Morphological effects on expression of growth differentiation factor 15 (GDF15), a marker of metastasis. J Cell Physiol 2014; 229:362-73. [PMID: 23996089 DOI: 10.1002/jcp.24458] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Accepted: 08/21/2013] [Indexed: 02/03/2023]
Abstract
Cancer cells typically demonstrate altered morphology during the various stages of disease progression as well as metastasis. While much is known about how altered cell morphology in cancer is a result of genetic regulation, less is known about how changes in cell morphology affect cell function by influencing gene expression. In this study, we altered cell morphology in different types of cancer cells by disrupting the actin cytoskeleton or by modulating attachment and observed a rapid up-regulation of growth differentiation factor 15 (GDF15), a member of the transforming growth factor-beta (TGF-β) super-family. Strikingly, this up-regulation was sustained as long as the cell morphology remained altered but was reversed upon allowing cell morphology to return to its typical configuration. The potential significance of these findings was examined in vivo using a mouse model: a small number of cancer cells grown in diffusion chambers that altered morphology increased mouse serum GDF15. Taken together, we propose that during the process of metastasis, cancer cells experience changes in cell morphology, resulting in the increased production and secretion of GDF15 into the surrounding environment. This indicates a possible relationship between serum GDF15 levels and circulating tumor cells may exist. Further investigation into the exact nature of this relationship is warranted.
Collapse
Affiliation(s)
- Koh Meng Aw Yong
- The James Buchanan Brady Urological Institute, Department of Urology, The Johns Hopkins University School of Medicine, Baltimore, Maryland
| | | | | | | | | | | | | |
Collapse
|
29
|
Matta C, Mobasheri A. Regulation of chondrogenesis by protein kinase C: Emerging new roles in calcium signalling. Cell Signal 2014; 26:979-1000. [PMID: 24440668 DOI: 10.1016/j.cellsig.2014.01.011] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Accepted: 01/09/2014] [Indexed: 01/14/2023]
Abstract
During chondrogenesis, complex intracellular signalling pathways regulate an intricate series of events including condensation of chondroprogenitor cells and nodule formation followed by chondrogenic differentiation. Reversible phosphorylation of key target proteins is of particular importance during this process. Among protein kinases known to be involved in these pathways, protein kinase C (PKC) subtypes play pivotal roles. However, the precise function of PKC isoenzymes during chondrogenesis and in mature articular chondrocytes is still largely unclear. In this review, we provide a historical overview of how the concept of PKC-mediated chondrogenesis has evolved, starting from the first discoveries of PKC isoform expression and activity. Signalling components upstream and downstream of PKC, leading to the stimulation of chondrogenic differentiation, are also discussed. Although it is evident that we are only at the beginning to understand what roles are assigned to PKC subtypes during chondrogenesis and how they are regulated, there are many yet unexplored aspects in this area. There is evidence that calcium signalling is a central regulator in differentiating chondroprogenitors; still, clear links between intracellular calcium signalling and prototypical calcium-dependent PKC subtypes such as PKCalpha have not been established. Exploiting putative connections and shedding more light on how exactly PKC signalling pathways influence cartilage formation should open new perspectives for a better understanding of healthy as well as pathological differentiation processes of chondrocytes, and may also lead to the development of novel therapeutic approaches.
Collapse
Affiliation(s)
- Csaba Matta
- Department of Anatomy, Histology and Embryology, Medical and Health Science Centre, University of Debrecen, Nagyerdei krt. 98, H-4032 Debrecen, Hungary.
| | - Ali Mobasheri
- D-BOARD European Consortium for Biomarker Discovery, Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis, Arthritis Research UK Pain Centre, Medical Research Council and Arthritis Research UK Centre for Musculoskeletal Ageing Research, School of Medicine, Faculty of Medicine and Health Sciences, The University of Nottingham, Queen's Medical Centre, Nottingham NG7 2UH, United Kingdom; School of Pharmacy, University of Bradford, Richmond Road, Bradford BD7 1DP, United Kingdom; School of Life Sciences, University of Bradford, Richmond Road, Bradford BD7 1DP, United Kingdom; Center of Excellence in Genomic Medicine Research (CEGMR), King Abdulaziz University, Jeddah 21589, Saudi Arabia
| |
Collapse
|
30
|
Interference with the contractile machinery of the fibroblastic chondrocyte cytoskeleton induces re-expression of the cartilage phenotype through involvement of PI3K, PKC and MAPKs. Exp Cell Res 2013; 320:175-87. [PMID: 24246223 DOI: 10.1016/j.yexcr.2013.11.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Revised: 11/04/2013] [Accepted: 11/08/2013] [Indexed: 12/20/2022]
Abstract
Chondrocytes rapidly lose their phenotypic expression of collagen II and aggrecan when grown on 2D substrates. It has generally been observed that a fibroblastic morphology with strong actin-myosin contractility inhibits chondrogenesis, whereas chondrogenesis may be promoted by depolymerization of the stress fibers and/or disruption of the physical link between the actin stress fibers and the ECM, as is the case in 3D hydrogels. Here we studied the relationship between the actin-myosin cytoskeleton and expression of chondrogenic markers by culturing fibroblastic chondrocytes in the presence of cytochalasin D and staurosporine. Both drugs induced collagen II re-expression; however, renewed glycosaminoglycan synthesis could only be observed upon treatment with staurosporine. The chondrogenic effect of staurosporine was augmented when blebbistatin, an inhibitor of myosin/actin contractility, was added to the staurosporine-stimulated cultures. Furthermore, in 3D alginate cultures, the amount of staurosporine required to induce chondrogenesis was much lower compared to 2D cultures (0.625 nM vs. 2.5 nM). Using a selection of specific signaling pathway inhibitors, it was found that PI3K-, PKC- and p38-MAPK pathways positively regulated chondrogenesis while the ERK-pathway was found to be a negative regulator in staurosporine-induced re-differentiation, whereas down-regulation of ILK by siRNA indicated that ILK is not determining for chondrocyte re-differentiation. Furthermore, staurosporine analog midostaurin displayed only a limited chondrogenic effect, suggesting that activation/deactivation of a specific set of key signaling molecules can control the expression of the chondrogenic phenotype. This study demonstrates the critical importance of mechanobiological factors in chondrogenesis suggesting that the architecture of the actin cytoskeleton and its contractility control key signaling molecules that determine whether the chondrocyte phenotype will be directed along a fibroblastic or chondrogenic path.
Collapse
|
31
|
Ikewaki N, Yamada A, Inoko H. Depolymerization of Actin Filament by Cytochalasin E Induces Interleukin-8 Production and Up-Regulates CD54 in the HeLa Epithelial Cell Line. Microbiol Immunol 2013; 47:775-83. [PMID: 14605444 DOI: 10.1111/j.1348-0421.2003.tb03435.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We previously reported that the depolymerization of actin filament by cytochalasin E enhances low affinity Fcepsilon receptor II (CD23) expression on the human monocyte-like cell line, U937 (J. Clin. Immunol. 20: 235, 2000). In this study, we found that cytochalasin E strongly induces interleukin-8 through an epithelial cell line, HeLa, in dose- and time-dependent manners as assessed by enzyme-linked immunoassay and reverse transcription-polymerase chain reaction techniques. In addition, interleukin-8 production in the HeLa cells cultured with cytochalasin E was blocked in the presence of protein kinase C inhibitors, Go6976 and H-7. On the other hand, it was found that CD54 (intercellular adhesion molecule-1; ICAM-1) expression on the HeLa cells and the secretion of soluble CD54 were significantly up-regulated after culturing with cytochalasin E, and that these up-regulations of CD54 were also suppressed by Go6976. Taken together, these findings indicate that cytochalasin E activates protein kinase C under the depolymerization of actin filament, leading to the induction of interleukin-8 production and the up-regulation of CD54 in HeLa cells.
Collapse
Affiliation(s)
- Nobunao Ikewaki
- Division of Immunology, Kyushu University of Health and Welfare, Faculty of Health and Science, Nobeoka, Miyazaki 882-8508, Japan
| | | | | |
Collapse
|
32
|
Chen E, Tang MK, Yao Y, Yau WWY, Lo LM, Yang X, Chui YL, Chan J, Lee KKH. Silencing BRE expression in human umbilical cord perivascular (HUCPV) progenitor cells accelerates osteogenic and chondrogenic differentiation. PLoS One 2013; 8:e67896. [PMID: 23935848 PMCID: PMC3720665 DOI: 10.1371/journal.pone.0067896] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Accepted: 05/23/2013] [Indexed: 01/27/2023] Open
Abstract
BRE is a multifunctional adapter protein involved in DNA repair, cell survival and stress response. To date, most studies of this protein have been focused in the tumor model. The role of BRE in stem cell biology has never been investigated. Therefore, we have used HUCPV progenitor cells to elucidate the function of BRE. HUCPV cells are multipotent fetal progenitor cells which possess the ability to differentiate into a multitude of mesenchymal cell lineages when chemically induced and can be more easily amplified in culture. In this study, we have established that BRE expression was normally expressed in HUCPV cells but become down-regulated when the cells were induced to differentiate. In addition, silencing BRE expression, using BRE-siRNAs, in HUCPV cells could accelerate induced chondrogenic and osteogenic differentiation. Hence, we postulated that BRE played an important role in maintaining the stemness of HUCPV cells. We used microarray analysis to examine the transcriptome of BRE-silenced cells. BRE-silencing negatively regulated OCT4, FGF5 and FOXO1A. BRE-silencing also altered the expression of epigenetic genes and components of the TGF-β/BMP and FGF signaling pathways which are crucially involved in maintaining stem cell self-renewal. Comparative proteomic profiling also revealed that BRE-silencing resulted in decreased expressions of actin-binding proteins. In sum, we propose that BRE acts like an adaptor protein that promotes stemness and at the same time inhibits the differentiation of HUCPV cells.
Collapse
Affiliation(s)
- Elve Chen
- Stem Cell and Regeneration Thematic Research Programme, School of Biomedical Sciences, Chinese University of Hong Kong, Hong Kong, People's Republic of China
| | - Mei Kuen Tang
- Stem Cell and Regeneration Thematic Research Programme, School of Biomedical Sciences, Chinese University of Hong Kong, Hong Kong, People's Republic of China
| | - Yao Yao
- Stem Cell and Regeneration Thematic Research Programme, School of Biomedical Sciences, Chinese University of Hong Kong, Hong Kong, People's Republic of China
| | - Winifred Wing Yiu Yau
- Stem Cell and Regeneration Thematic Research Programme, School of Biomedical Sciences, Chinese University of Hong Kong, Hong Kong, People's Republic of China
| | - Lok Man Lo
- Stem Cell and Regeneration Thematic Research Programme, School of Biomedical Sciences, Chinese University of Hong Kong, Hong Kong, People's Republic of China
| | - Xuesong Yang
- Key Laboratory for Regenerative Medicine Ministry of Education, Jinan University, Guangzhou, People's Republic of China
| | - Yiu Loon Chui
- Department of Chemical Pathology, Chinese University of Hong Kong, Chinese University of Hong Kong, Hong Kong, People's Republic of China
| | - John Chan
- Key Laboratory for Regenerative Medicine Ministry of Education, Jinan University, Guangzhou, People's Republic of China
| | - Kenneth Ka Ho Lee
- Stem Cell and Regeneration Thematic Research Programme, School of Biomedical Sciences, Chinese University of Hong Kong, Hong Kong, People's Republic of China
- Key Laboratory for Regenerative Medicine Ministry of Education, Jinan University, Guangzhou, People's Republic of China
- School of Pharmacy and Life Sciences, Robert Gordon University, Aberdeen, Scotland, United Kingdom
- * E-mail:
| |
Collapse
|
33
|
Dowling EP, Ronan W, McGarry JP. Computational investigation of in situ chondrocyte deformation and actin cytoskeleton remodelling under physiological loading. Acta Biomater 2013; 9:5943-55. [PMID: 23271042 DOI: 10.1016/j.actbio.2012.12.021] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2012] [Revised: 12/14/2012] [Accepted: 12/17/2012] [Indexed: 12/22/2022]
Abstract
Previous experimental studies have determined local strain fields for both healthy and degenerate cartilage tissue during mechanical loading. However, the biomechanical response of chondrocytes in situ, in particular the response of the actin cytoskeleton to physiological loading conditions, is poorly understood. In the current study a three-dimensional (3-D) representative volume element (RVE) for cartilage tissue is created, comprising a chondrocyte surrounded by a pericellular matrix and embedded in an extracellular matrix. A 3-D active modelling framework incorporating actin cytoskeleton remodelling and contractility is implemented to predict the biomechanical behaviour of chondrocytes. Physiological and abnormal strain fields, based on the experimental study of Wong and Sah (J. Orthop. Res. 2010; 28: 1554-1561), are applied to the RVE. Simulations demonstrate that the presence of a focal defect significantly affects cellular deformation, increases the stress experienced by the nucleus, and alters the distribution of the actin cytoskeleton. It is demonstrated that during dynamic loading cyclic tension reduction in the cytoplasm causes continuous dissociation of the actin cytoskeleton. In contrast, during static loading significant changes in cytoplasm tension are not predicted and hence the rate of dissociation of the actin cytoskeleton is reduced. It is demonstrated that chondrocyte behaviour is affected by the stiffness of the pericellular matrix, and also by the anisotropy of the extracellular matrix. The findings of the current study are of particular importance in understanding the biomechanics underlying experimental observations such as actin cytoskeleton dissociation during the dynamic loading of chondrocytes.
Collapse
Affiliation(s)
- Enda P Dowling
- Mechanical and Biomedical Engineering, National University of Ireland-Galway, Galway, Ireland
| | | | | |
Collapse
|
34
|
Kim M, Song K, Jin EJ, Sonn J. Staurosporine and cytochalasin D induce chondrogenesis by regulation of actin dynamics in different way. Exp Mol Med 2013; 44:521-8. [PMID: 22684244 PMCID: PMC3465745 DOI: 10.3858/emm.2012.44.9.059] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Actin cytoskeleton has been known to control and/or be associated with chondrogenesis. Staurosporine and cytochalasin D modulate actin cytoskeleton and affect chondrogenesis. However, the underlying mechanisms for actin dynamics regulation by these agents are not known well. In the present study, we investigate the effect of staurosporine and cytochalasin D on the actin dynamics as well as possible regulatory mechanisms of actin cytoskeleton modulation. Staurosporine and cytochalasin D have different effects on actin stress fibers in that staurosporine dissolved actin stress fibers while cytochalasin D disrupted them in both stress forming cells and stress fiber-formed cells. Increase in the G-/F-actin ratio either by dissolution or disruption of actin stress fiber is critical for the chondrogenic differentiation. Cytochalasin D reduced the phosphorylation of cofilin, whereas staurosporine showed little effect on cofilin phosphorylation. Either staurosporine or cytochalasin D had little effect on the phosphorylation of myosin light chain. These results suggest that staurosporine and cytochalasin D employ different mechanisms for the regulation of actin dynamics and provide evidence that removal of actin stress fibers is crucial for the chondrogenic differentiation.
Collapse
Affiliation(s)
- Minjung Kim
- Department of Biology, College of Natural Sciences, Kyungpook National University, Daegu 702-701, Korea
| | | | | | | |
Collapse
|
35
|
Mathieu PS, Loboa EG. Cytoskeletal and focal adhesion influences on mesenchymal stem cell shape, mechanical properties, and differentiation down osteogenic, adipogenic, and chondrogenic pathways. TISSUE ENGINEERING PART B-REVIEWS 2012; 18:436-44. [PMID: 22741572 DOI: 10.1089/ten.teb.2012.0014] [Citation(s) in RCA: 273] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Mesenchymal stem cells (MSCs) hold great potential for regenerative medicine and tissue-engineering applications. They have multipotent differentiation capabilities and have been shown to differentiate down various lineages, including osteoblasts, adipocytes, chondrocytes, myocytes, and possibly neurons. The majority of approaches to control the MSC fate have been via the use of chemical factors in the form of growth factors within the culture medium. More recently, it has been understood that mechanical forces play a significant role in regulating MSC fate. We and others have shown that mechanical stimuli can control MSC lineage specification. The cytoskeleton is known to play a large role in mechanotransduction, and a growing number of studies are showing that it can also contribute to MSC differentiation. This review analyzes the significant contribution of actin and integrin distribution, and the smaller role of microtubules, in regulating MSC fate. Osteogenic differentiation is more prevalent in MSCs with a stiff, spread actin cytoskeleton and greater numbers of focal adhesions. Both adipogenic differentiation and chondrogenic differentiation are encouraged when MSCs have a spherical morphology associated with a dispersed actin cytoskeleton with few focal adhesions. Different mechanical stimuli can be implemented to alter these cytoskeletal patterns and encourage MSC differentiation to the desired lineage.
Collapse
Affiliation(s)
- Pattie S Mathieu
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, NC, USA
| | | |
Collapse
|
36
|
Inhibition of RhoA but not ROCK induces chondrogenesis of chick limb mesenchymal cells. Biochem Biophys Res Commun 2012; 418:500-5. [DOI: 10.1016/j.bbrc.2012.01.053] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2012] [Accepted: 01/10/2012] [Indexed: 02/05/2023]
|
37
|
Oze H, Hirao M, Ebina K, Shi K, Kawato Y, Kaneshiro S, Yoshikawa H, Hashimoto J. Impact of medium volume and oxygen concentration in the incubator on pericellular oxygen concentration and differentiation of murine chondrogenic cell culture. In Vitro Cell Dev Biol Anim 2012; 48:123-30. [DOI: 10.1007/s11626-011-9479-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Accepted: 12/22/2011] [Indexed: 11/25/2022]
|
38
|
Kawato Y, Hirao M, Ebina K, Tamai N, Shi K, Hashimoto J, Yoshikawa H, Myoui A. Nkx3.2-induced suppression of Runx2 is a crucial mediator of hypoxia-dependent maintenance of chondrocyte phenotypes. Biochem Biophys Res Commun 2011; 416:205-10. [PMID: 22093831 DOI: 10.1016/j.bbrc.2011.11.026] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2011] [Accepted: 11/04/2011] [Indexed: 11/17/2022]
Abstract
Hypoxia is a key factor in the maintenance of chondrocyte identity. However, crucial chondrogenic transcription factors in the Sox families are not activated in this phenomenon, indicating that other pathways are involved. Nkx3.2 is a well-known chondrogenic transcription factor induced by Sonic hedgehog (Shh); it suppresses a key osteogenic transcriptional factor, Runt-related transcription factor 2 (Runx2), to maintain the chondrogenic phenotype in mesenchymal lineages. The purpose of this study was to examine the function of Nkx3.2 in hypoxia-dependent maintenance of chondrocyte identity. C3H10T1/2 pluripotent mesenchymal cells were cultured with rh-BMP2 (300 ng/ml) to induce chondrogenesis under normoxic (20% O(2)) or hypoxic (5% O(2)) conditions. Immunohistological detection of Nkx3.2 in a micromass cell culture system revealed that hypoxia promoted expression of the Nkx3.2 protein. Real-time RT-PCR analysis revealed that hypoxia promoted Nkx3.2 mRNA expression and suppressed Runx2 mRNA expression; however, Sox9 mRNA expression was not altered by oxygen conditions, as previously described. Over-expression of exogenous Nkx3.2 promoted glycosaminoglycan (GAG) production and inhibited Runx2 mRNA expression and, based on a dual luciferase assay, Runx2 promoter activity. Interestingly, downregulation of Nkx3.2 using RNAi abolished hypoxia-dependent GAG production and restored Runx2 mRNA expression and promoter activity. These results demonstrated that Nkx3.2-dependent suppression of Runx2 was a crucial factor in hypoxia-dependent maintenance of chondrocyte identity.
Collapse
Affiliation(s)
- Yoshitaka Kawato
- Department of Orthopaedics, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | | | | | | | | | | | | | | |
Collapse
|
39
|
Berendsen AD, Vonk LA, Zandieh-Doulabi B, Everts V, Bank RA. Contraction-induced Mmp13 and -14 expression by goat articular chondrocytes in collagen type I but not type II gels. J Tissue Eng Regen Med 2011; 6:721-30. [PMID: 21948715 DOI: 10.1002/term.477] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2010] [Revised: 01/22/2011] [Accepted: 07/05/2011] [Indexed: 11/11/2022]
Abstract
Collagen gels are promising scaffolds to prepare an implant for cartilage repair but several parameters, such as collagen concentration and composition as well as cell density, should be carefully considered, as they are reported to affect phenotypic aspects of chondrocytes. In this study we investigated whether the presence of collagen type I or II in gel lattices affects matrix contraction and relative gene expression levels of matrix proteins, MMPs and the subsequent degradation of collagen by goat articular chondrocytes. Only floating collagen I gels, and not those attached or composed of type II collagen, contracted during a culture period of 12 days. This coincided with an upregulation of both Mmp13 and -14 gene expression, whereas Mmp1 expression was not affected. The release of hydroxyproline in the culture medium, indicating matrix degradation, was increased five-fold in contracted collagen I gels compared to collagen II gels without contraction. Furthermore, blocking contraction of collagen I gels by cytochalasin B inhibited Mmp13 and -14 expression and the release of hydroxyproline. The expression of cartilage-specific ECM genes was decreased in contracted collagen I gels, with increased numbers of cells with an elongated morphology, suggesting that matrix contraction induces dedifferentiation of chondrocytes into fibroblast-like cells. We conclude that the collagen composition of the gels affects matrix contraction by articular chondrocytes and that matrix contraction induces an increased Mmp13 and -14 expression as well as matrix degradation.
Collapse
Affiliation(s)
- Agnes D Berendsen
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Research Institute MOVE, Amsterdam, The Netherlands
| | - Lucienne A Vonk
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Research Institute MOVE, Amsterdam, The Netherlands
| | | | - Vincent Everts
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Research Institute MOVE, Amsterdam, The Netherlands
| | - Ruud A Bank
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Research Institute MOVE, Amsterdam, The Netherlands.,Stem Cell and Tissue Engineering Research Group, Medical Biology Section, University Medical Centre Groningen, The Netherlands
| |
Collapse
|
40
|
Kelly DJ, Jacobs CR. The role of mechanical signals in regulating chondrogenesis and osteogenesis of mesenchymal stem cells. BIRTH DEFECTS RESEARCH. PART C, EMBRYO TODAY : REVIEWS 2010; 90:75-85. [PMID: 20301221 DOI: 10.1002/bdrc.20173] [Citation(s) in RCA: 174] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
It is becoming increasingly clear that mesenchymal stem cell (MSC) differentiation is regulated by mechanical signals. Mechanical forces generated intrinsically within the cell in response to its extracellular environment, and extrinsic mechanical signals imposed upon the cell by the extracellular environment, play a central role in determining MSC fate. This article reviews chondrogenesis and osteogenesis during skeletogenesis, and then considers the role of mechanics in regulating limb development and regenerative events such as fracture repair. However, observing skeletal changes under altered loading conditions can only partially explain the role of mechanics in controlling MSC differentiation. Increasingly, understanding how epigenetic factors, such as the mechanical environment, regulate stem cell fate is undertaken using tightly controlled in vitro models. Factors such as bioengineered surfaces, substrates, and bioreactor systems are used to control the mechanical forces imposed upon, and generated within, MSCs. From these studies, a clearer picture of how osteogenesis and chondrogenesis of MSCs is regulated by mechanical signals is beginning to emerge. Understanding the response of MSCs to such regulatory factors is a key step towards understanding their role in development, disease and regeneration.
Collapse
Affiliation(s)
- Daniel J Kelly
- Trinity Center for Bioengineering, School of Engineering, Trinity College Dublin, Ireland.
| | | |
Collapse
|
41
|
Bobick BE, Chen FH, Le AM, Tuan RS. Regulation of the chondrogenic phenotype in culture. ACTA ACUST UNITED AC 2010; 87:351-71. [PMID: 19960542 DOI: 10.1002/bdrc.20167] [Citation(s) in RCA: 111] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
In recent years, there has been a great deal of interest in the development of regenerative approaches to produce hyaline cartilage ex vivo that can be utilized for the repair or replacement of damaged or diseased tissue. It is clinically imperative that cartilage engineered in vitro mimics the molecular composition and organization of and exhibits biomechanical properties similar to persistent hyaline cartilage in vivo. Experimentally, much of our current knowledge pertaining to the regulation of cartilage formation, or chondrogenesis, has been acquired in vitro utilizing high-density cultures of undifferentiated chondroprogenitor cells stimulated to differentiate into chondrocytes. In this review, we describe the extracellular matrix molecules, nuclear transcription factors, cytoplasmic protein kinases, cytoskeletal components, and plasma membrane receptors that characterize cells undergoing chondrogenesis in vitro and regulate the progression of these cells through the chondrogenic differentiation program. We also provide an extensive list of growth factors and other extracellular signaling molecules, as well as chromatin remodeling proteins such as histone deacetylases, known to regulate chondrogenic differentiation in culture. In addition, we selectively highlight experiments that demonstrate how an understanding of normal hyaline cartilage formation can lead to the development of novel cartilage tissue engineering strategies. Finally, we present directions for future studies that may yield information applicable to the in vitro generation of hyaline cartilage that more closely resembles native tissue.
Collapse
Affiliation(s)
- Brent E Bobick
- Cartilage Biology and Orthopaedics Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Department of Health and Human Services, Bethesda, Maryland, USA
| | | | | | | |
Collapse
|
42
|
Ando W, Tateishi K, Katakai D, Hart DA, Higuchi C, Nakata K, Hashimoto J, Fujie H, Shino K, Yoshikawa H, Nakamura N. In vitro generation of a scaffold-free tissue-engineered construct (TEC) derived from human synovial mesenchymal stem cells: biological and mechanical properties and further chondrogenic potential. Tissue Eng Part A 2009; 14:2041-9. [PMID: 18636944 DOI: 10.1089/ten.tea.2008.0015] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The purpose of this study was to characterize a tissue-engineered construct (TEC) generated with human synovial mesenchymal stem cells (MSCs). MSCs were cultured in medium with ascorbic acid 2-phosphate (Asc-2P) and were subsequently detached from the substratum. The detached cell/matrix complex spontaneously contracted to develop a basic TEC. The volume of the TEC assessed by varying initial cell density showed that it was proportional to initial cell densities up to 4 x 10(5) cells/cm(2). Assessment of the mechanical properties of TEC using a custom device showed that the load at failure and stiffness of the constructs significantly increased with time of culture in the presence of Asc-2P, while in the absence of Asc-2P, the constructs were mechanically weak. Thus, the basic TEC possesses sufficiently self-supporting mechanical properties in spite of not containing artificial scaffolding. TEC further cultured in chondrogenic media exhibited positive alcian blue staining with elevated expression of chondrogenic marker genes. Based on these findings, such human TEC may be a promising method to promote cartilage repair for future clinical application.
Collapse
Affiliation(s)
- Wataru Ando
- Department of Orthopaedics, Osaka University Graduate School of Medicine, Osaka, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
43
|
Higuchi C, Nakamura N, Yoshikawa H, Itoh K. Transient dynamic actin cytoskeletal change stimulates the osteoblastic differentiation. J Bone Miner Metab 2009; 27:158-67. [PMID: 19183835 DOI: 10.1007/s00774-009-0037-y] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2008] [Accepted: 07/11/2008] [Indexed: 11/26/2022]
Abstract
Dynamic cytoskeletal changes appear to be one of intracellular signals that control cell differentiation. To test this hypothesis, we examined the effects of short-term actin cytoskeletal changes on osteoblastic differentiation. We found an actin polymerization interfering reagent, cytochalasin D, promoted osteoblastic differentiation in mouse preosteoblastic MC3T3-E1 cells. We also found that these effects were mediated by the protein kinase D (PKD) pathway. Short-term cytochalasin D treatment increased alkaline phosphatase (ALP) activity, osteocalcin (OCN) secretion, and mineralization of the extracellular matrix in MC3T3-E1 cells, with temporary changes in actin cytoskeleton. Furthermore, the disruption of actin cytoskeleton induced phosphorylation of 744/748 serine within the activation loop of PKD in a dose-dependent manner. The protein kinase C (PKC)/PKD inhibitor Go6976 suppressed cytochalasin D-induced acceleration of osteoblastic differentiation, whereas Go6983, a specific inhibitor of conventional PKCs, did not. Involvement of PKD signaling was confirmed by using small interfering RNA to knock down PKD. In addition, another actin polymerization interfering reagent, latrunculin B, also stimulated ALP activity and OCN secretion with PKD activation. On the other hand, the present data suggested that transient dynamic actin cytoskeletal reorganization could be a novel cellular signal that directly stimulated osteoblastic differentiation.
Collapse
Affiliation(s)
- Chikahisa Higuchi
- Department of Orthopedic Surgery, Osaka University Medical School, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan.
| | | | | | | |
Collapse
|
44
|
Kim K, Lee Y. Activation of CREB by PKA promotes the chondrogeneic differentiation of chick limb bud mesenchymal cells. Anim Cells Syst (Seoul) 2009. [DOI: 10.1080/19768354.2009.9647221] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
|
45
|
Connelly JT, García AJ, Levenston ME. Interactions between integrin ligand density and cytoskeletal integrity regulate BMSC chondrogenesis. J Cell Physiol 2008; 217:145-54. [DOI: 10.1002/jcp.21484] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
46
|
Jin EJ, Park KS, Bang OS, Kang SS. Akt signaling regulates actin organization via modulation of MMP-2 activity during chondrogenesis of chick wing limb bud mesenchymal cells. J Cell Biochem 2007; 102:252-61. [PMID: 17551962 DOI: 10.1002/jcb.21430] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Endochondral ossification is initiated by the differentiation of mesenchymal precursor cells to chondrocytes. This process is characterized by a strong interdependence of cell shape and cytoskeletal organization accompanying the onset of chondrogenic gene expression, but the molecular mechanisms mediating these interactions are not known. In this study, we hypothesized that the activation of matrix metalloproteinase (MMP)-2 would be involved in the reorganization of the actin cytoskeleton and that this would require an Akt-dependent signaling pathway in chick wing bud mesenchymal cells. The pharmacological inhibition of Akt signaling resulted in decreased glycosaminoglycan synthesis and reduced the level of active MMP-2, leading to suppressed cortical actin organization which is characteristic of differentiated chondrocytes. In addition, the exposure of cells to bafilomycin A1 reversed these chondro-inhibitory effects induced by inhibition of Akt signaling. In conclusion, our data indicate that Akt signaling is involved in the activation of MMP-2 and that this Akt-induced activation of MMP-2 is responsible for reorganization of the actin cytoskeleton into a cortical pattern with parallel rounding of chondrogenic competent cells.
Collapse
Affiliation(s)
- Eun-Jung Jin
- Department of Biology, College of Natural Sciences (BK21), Kyungpook National University, Daegu 702-701, Korea
| | | | | | | |
Collapse
|
47
|
Um HR, Lim WC, Chae SY, Park S, Park JH, Cho H. Raf-1 and protein kinase B regulate cell survival through the activation of NF-kappaB in hepatitis B virus X-expressing cells. Virus Res 2006; 125:1-8. [PMID: 17188775 DOI: 10.1016/j.virusres.2006.11.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2006] [Revised: 11/10/2006] [Accepted: 11/10/2006] [Indexed: 12/17/2022]
Abstract
We previously demonstrated that activation of NF-kappaB by the hepatitis B virus X (HBx) gene plays an important role in cell survival. In the present study, we explored the upstream mediators of NF-kappaB activation and their correlations with cell survival. XTT assays and colony generation assays revealed that inhibition of NF-kappaB activation indeed increased cell death in HBx-expressing cells. Utilizing inactivating mutants of signal transducers, we showed that dominant negative mutants of stress-activated protein kinase/extracellular signal-regulated kinase (SEK1) or PKCalpha significantly diminished the HBx-mediated NF-kappaB activation. However, neither of these mutants significantly affected the cell survival in colony generation assays. In contrast, inactivating mutants of Raf-1 or PKB (protein kinase B)/Akt abrogated the HBx-mediated NF-kappaB activation and also suppressed the cell survival. Our results suggest that the Raf-1 or PKB-mediated NF-kappaB activation promotes cell survival in HBx-expressing cells.
Collapse
Affiliation(s)
- Hae-Ryun Um
- Department of Biochemistry and Molecular Biology, Chronic Inflammatory Disease Research Center, Ajou University School of Medicine, 5 Wonchon-Dong, Yeongtong-Gu, Suwon, Republic of Korea
| | | | | | | | | | | |
Collapse
|
48
|
Oster H, Leitges M. Protein kinase C alpha but not PKCzeta suppresses intestinal tumor formation in ApcMin/+ mice. Cancer Res 2006; 66:6955-63. [PMID: 16849539 DOI: 10.1158/0008-5472.can-06-0268] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Members of the protein kinase C (PKC) family of serine/threonine kinases play key regulatory roles in numerous cellular processes, including differentiation and proliferation. Of the 11 mammalian PKC isoforms known, several have been implicated in tumor development and progression. However, in most cases, isotype specificity is poorly defined, and even contrary functions for a single PKC have been reported mostly because appropriate molecular and genetic tools were missing to specifically assess the contribution of single PKC isoforms in vivo. In this report, we therefore used PKC genetic targeting to study the role of PKCalpha and PKCzeta in colorectal cancer. Both isoforms were found to be strongly down-regulated in intestinal tumors of ApcMin/+ mice. A deletion of PKCzeta did not affect tumorigenesis in this animal model. In contrast, PKCalpha-deficient ApcMin/+ mice developed more aggressive tumors and died significantly earlier than their PKCalpha-proficient littermates. Even without an additional Apc mutation, PKCalpha knockout mice showed an elevated tendency to develop spontaneous intestinal tumors. Transcriptional profiling revealed a role for this kinase in regulating epidermal growth factor receptor (EGFR) signaling and proposed a synergistic mechanism for EGFR/activator protein and WNT/APC pathways in mediating intestinal tumor development.
Collapse
Affiliation(s)
- Henrik Oster
- Laboratory for Signal Transduction, Max Planck Institute of Experimental Endocrinology and Department of Nephrology, Hannover Medical School, Hannover, Germany
| | | |
Collapse
|
49
|
Hirao M, Tamai N, Tsumaki N, Yoshikawa H, Myoui A. Oxygen tension regulates chondrocyte differentiation and function during endochondral ossification. J Biol Chem 2006; 281:31079-92. [PMID: 16905540 DOI: 10.1074/jbc.m602296200] [Citation(s) in RCA: 137] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Cartilage functions at a lower oxygen tension than most other tissues. To determine the role of oxygen tension in chondrocyte differentiation and function, we investigated the influence of oxygen tension in the pluripotent mesenchymal cell line C3H10T1/2 and 14.5E mice embryo forelimb organ culture. 10T1/2 cells and embryo forelimbs were cultured under normoxia (20% O2) or hypoxia (5% O2) in the presence of recombinant human bone morphogenetic protein 2. To elucidate the mechanism by which oxygen tension influences chondrocyte differentiation, the Smad pathway was examined using Smad6 overexpression adenovirus and Smad6 transgenic mice embryo forelimbs. The p38 MAPK pathway was examined using dominant-negative MKK3 and FR167653, a specific p38 MAPK inhibitor. The transcriptional activities of Sox9 and Runx2 were also investigated. Hypoxia promoted bone morphogenetic protein 2-induced glycosaminoglycan production and suppressed alkaline phosphatase activity and mineralization of C3H10T1/2. Thus, hypoxia promoted chondrocytic commitment rather than osteoblastic differentiation. In the mice embryo forelimb organ culture, hypoxia increased cartilaginous matrix synthesis. These effects were primarily mediated by p38 MAPK activation, independent of Sox9. Hypoxia inhibited Col10a1 (type X collagen alpha1) expression via down-regulation of Runx2 activity by Smad suppression and histone deacetylase 4 activation. In conclusion, hypoxia promotes chondrocytic differentiation and cartilage matrix synthesis and suppresses terminal chondrocyte differentiation. These hypoxia-induced phenomena may act on chondrocytes to enhance and preserve their phenotype and function during chondrocyte differentiation and endochondral ossification.
Collapse
Affiliation(s)
- Makoto Hirao
- Department of Orthopaedics, Osaka University Graduate School of Medicine, 2-2 Yamadoaka, Suita, Osaka 565-0871, Japan
| | | | | | | | | |
Collapse
|
50
|
Zhang Z, Messana J, Hwang NSH, Elisseeff JH. Reorganization of actin filaments enhances chondrogenic differentiation of cells derived from murine embryonic stem cells. Biochem Biophys Res Commun 2006; 348:421-7. [PMID: 16887096 DOI: 10.1016/j.bbrc.2006.07.073] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2006] [Accepted: 07/13/2006] [Indexed: 01/06/2023]
Abstract
Differentiation of embryonic stem cells is of great interest to developmental biology and regenerative medicine. This study investigated the effects of cytochalasin D (CD) on the distribution of actin filaments in mouse embryoid body (EB)-derived cells. Furthermore, CD was applied to chondrogenic medium to examine its chondrogenic effect. CD at a concentration of 1 microg/ml disrupted stress fibers in EB-derived cells. Actin filaments in treated cells reorganized into a peripheral pattern, and type II collagen was detected by immunocytochemistry. The expression of type II collagen, Sox9, and at a later time point, aggrecan was up-regulated after CD treatment. In the CD-treated cells, Oct4 and Sox2, representing undifferentiation, were down-regulated as well as Sox1, AFP, and CTN-1, representing ectoderm, endoderm, and cardiogenesis, respectively. In conclusion, CD treatment enhances chondrogenesis of EB-derived cells. Moreover, it promotes a more complete stem cell differentiation toward chondrogenesis, when cultured in chondrogenic medium.
Collapse
Affiliation(s)
- Zijun Zhang
- Department of Biomedical Engineering, The Johns Hopkins University, 3400 N. Charles Street, Clark Hall 102, Baltimore, MD 21218, USA.
| | | | | | | |
Collapse
|