1
|
Schmidt S, Klampfleuthner FAM, Renkawitz T, Diederichs S. Cause and chondroprotective effects of prostaglandin E2 secretion during mesenchymal stromal cell chondrogenesis. Eur J Cell Biol 2024; 103:151412. [PMID: 38608422 DOI: 10.1016/j.ejcb.2024.151412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 03/27/2024] [Accepted: 04/04/2024] [Indexed: 04/14/2024] Open
Abstract
Mesenchymal stromal cells (MSCs) that are promising for cartilage tissue engineering secrete high amounts of prostaglandin E2 (PGE2), an immunoactive mediator involved in endochondral bone development. This study aimed to identify drivers of PGE2 and its role in the inadvertent MSC misdifferentiation into hypertrophic chondrocytes. PGE2 release, which rose in the first three weeks of MSC chondrogenesis, was jointly stimulated by endogenous BMP, WNT, and hedgehog activity that supported the exogenous stimulation by TGF-β1 and insulin to overcome the PGE2 inhibition by dexamethasone. Experiments with PGE2 treatment or the inhibitor celecoxib or specific receptor antagonists demonstrated that PGE2, although driven by prohypertrophic signals, exerted broad autocrine antihypertrophic effects. This chondroprotective effect makes PGE2 not only a promising option for future combinatorial approaches to direct MSC tissue engineering approaches into chondral instead of endochondral development but could potentially have implications for the use of COX-2-selective inhibitors in osteoarthritis pain management.
Collapse
Affiliation(s)
- Sven Schmidt
- Experimental Orthopaedics, Research Centre for Molecular and Regenerative Orthopaedics, Department of Orthopaedics, Heidelberg, Germany
| | - Felicia A M Klampfleuthner
- Experimental Orthopaedics, Research Centre for Molecular and Regenerative Orthopaedics, Department of Orthopaedics, Heidelberg, Germany
| | - Tobias Renkawitz
- Research Centre for Molecular and Regenerative Orthopaedics, Department of Orthopaedics, Heidelberg University Hospital, Heidelberg, Germany
| | - Solvig Diederichs
- Experimental Orthopaedics, Research Centre for Molecular and Regenerative Orthopaedics, Department of Orthopaedics, Heidelberg, Germany.
| |
Collapse
|
2
|
Diederichs S, Dreher SI, Nüesch SA, Schmidt S, Merle C, Richter W. Mesenchymal stromal cell chondrogenesis under ALK1/2/3-specific BMP inhibition: a revision of the prohypertrophic signalling network concept. Stem Cell Res Ther 2024; 15:98. [PMID: 38581019 PMCID: PMC10998299 DOI: 10.1186/s13287-024-03710-7] [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: 10/18/2023] [Accepted: 03/27/2024] [Indexed: 04/07/2024] Open
Abstract
BACKGROUND In vitro chondrogenesis of mesenchymal stromal cells (MSCs) driven by the essential chondro-inducer transforming growth factor (TGF)-β is instable and yields undesired hypertrophic cartilage predisposed to bone formation in vivo. TGF-β can non-canonically activate bone morphogenetic protein-associated ALK1/2/3 receptors. These have been accused of driving hypertrophic MSC misdifferentiation, but data remained conflicting. We here tested the antihypertrophic capacity of two highly specific ALK1/2/3 inhibitors - compound A (CompA) and LDN-212854 (LDN21) - in order to reveal potential prohypertrophic contributions of these BMP/non-canonical TGF-β receptors during MSC in vitro chondrogenesis. METHODS Standard chondrogenic pellet cultures of human bone marrow-derived MSCs were treated with TGF-β and CompA (500 nM) or LDN21 (500 nM). Daily 6-hour pulses of parathyroid hormone-related peptide (PTHrP[1-34], 2.5 nM, from day 7) served as potent antihypertrophic control treatment. Day 28 samples were subcutaneously implanted into immunodeficient mice. RESULTS All groups underwent strong chondrogenesis, but GAG/DNA deposition and ACAN expression were slightly but significantly reduced by ALK inhibition compared to solvent controls along with a mild decrease of the hypertrophy markers IHH-, SPP1-mRNA, and Alkaline phosphatase (ALP) activity. When corrected for the degree of chondrogenesis (COL2A1 expression), only pulsed PTHrP but not ALK1/2/3 inhibition qualified as antihypertrophic treatment. In vivo, all subcutaneous cartilaginous implants mineralized within 8 weeks, but PTHrP pretreated samples formed less bone and attracted significantly less haematopoietic marrow than ALK1/2/3 inhibitor groups. CONCLUSIONS Overall, our data show that BMP-ALK1/2/3 inhibition cannot program mesenchymal stromal cells toward stable chondrogenesis. BMP-ALK1/2/3 signalling is no driver of hypertrophic MSC misdifferentiation and BMP receptor induction is not an adverse prohypertrophic side effect of TGF-β that leads to endochondral MSC misdifferentiation. Instead, the prohypertrophic network comprises misregulated PTHrP/hedgehog signalling and WNT activity, and a potential contribution of TGF-β-ALK4/5-mediated SMAD1/5/9 signalling should be further investigated to decide about its postulated prohypertrophic activity. This will help to successfully engineer cartilage replacement tissues from MSCs in vitro and translate these into clinical cartilage regenerative therapies.
Collapse
Affiliation(s)
- Solvig Diederichs
- Research Centre for Experimental Orthopaedics, Orthopaedic University Hospital, Heidelberg University Hospital, Schlierbacher Landstrasse 200a, Heidelberg, 69118, Germany.
| | - Simon I Dreher
- Research Centre for Experimental Orthopaedics, Orthopaedic University Hospital, Heidelberg University Hospital, Schlierbacher Landstrasse 200a, Heidelberg, 69118, Germany
| | - Sarah Anna Nüesch
- Research Centre for Experimental Orthopaedics, Orthopaedic University Hospital, Heidelberg University Hospital, Schlierbacher Landstrasse 200a, Heidelberg, 69118, Germany
| | - Sven Schmidt
- Research Centre for Experimental Orthopaedics, Orthopaedic University Hospital, Heidelberg University Hospital, Schlierbacher Landstrasse 200a, Heidelberg, 69118, Germany
| | - Christian Merle
- Orthopaedic University Hospital, Heidelberg University Hospital, Heidelberg, Germany
- Orthopädische Klinik Paulinenhilfe, Diakonieklinikum Stuttgart, Stuttgart, Germany
| | - Wiltrud Richter
- Research Centre for Experimental Orthopaedics, Orthopaedic University Hospital, Heidelberg University Hospital, Schlierbacher Landstrasse 200a, Heidelberg, 69118, Germany
| |
Collapse
|
3
|
Jia Y, Le H, Wang X, Zhang J, Liu Y, Ding J, Zheng C, Chang F. Double-edged role of mechanical stimuli and underlying mechanisms in cartilage tissue engineering. Front Bioeng Biotechnol 2023; 11:1271762. [PMID: 38053849 PMCID: PMC10694366 DOI: 10.3389/fbioe.2023.1271762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 10/11/2023] [Indexed: 12/07/2023] Open
Abstract
Mechanical stimuli regulate the chondrogenic differentiation of mesenchymal stem cells and the homeostasis of chondrocytes, thus affecting implant success in cartilage tissue engineering. The mechanical microenvironment plays fundamental roles in the maturation and maintenance of natural articular cartilage, and the progression of osteoarthritis Hence, cartilage tissue engineering attempts to mimic this environment in vivo to obtain implants that enable a superior regeneration process. However, the specific type of mechanical loading, its optimal regime, and the underlying molecular mechanisms are still under investigation. First, this review delineates the composition and structure of articular cartilage, indicating that the morphology of chondrocytes and components of the extracellular matrix differ from each other to resist forces in three top-to-bottom overlapping zones. Moreover, results from research experiments and clinical trials focusing on the effect of compression, fluid shear stress, hydrostatic pressure, and osmotic pressure are presented and critically evaluated. As a key direction, the latest advances in mechanisms involved in the transduction of external mechanical signals into biological signals are discussed. These mechanical signals are sensed by receptors in the cell membrane, such as primary cilia, integrins, and ion channels, which next activate downstream pathways. Finally, biomaterials with various modifications to mimic the mechanical properties of natural cartilage and the self-designed bioreactors for experiment in vitro are outlined. An improved understanding of biomechanically driven cartilage tissue engineering and the underlying mechanisms is expected to lead to efficient articular cartilage repair for cartilage degeneration and disease.
Collapse
Affiliation(s)
- Yao Jia
- Department of Orthopedics, The Second Hospital of Jilin University, Jilin, China
- The Second Bethune Clinical Medical College of Jilin University, Jilin, China
| | - Hanxiang Le
- Department of Orthopedics, The Second Hospital of Jilin University, Jilin, China
- The Fourth Treatment Area of Trauma Hip Joint Surgery Department, Tianjin Hospital, Tianjin, China
| | - Xianggang Wang
- Department of Orthopedics, The Second Hospital of Jilin University, Jilin, China
| | - Jiaxin Zhang
- Department of Orthopedics, The Second Hospital of Jilin University, Jilin, China
| | - Yan Liu
- The Second Bethune Clinical Medical College of Jilin University, Jilin, China
| | - Jiacheng Ding
- The Second Bethune Clinical Medical College of Jilin University, Jilin, China
| | - Changjun Zheng
- Department of Orthopedics, The Second Hospital of Jilin University, Jilin, China
| | - Fei Chang
- Department of Orthopedics, The Second Hospital of Jilin University, Jilin, China
| |
Collapse
|
4
|
Hammersen T, Buchert J, Zietzschmann S, Diederichs S, Richter W. Inverse Regulation of Cartilage Neogenesis at Physiologically Relevant Calcium Conditions by Human Articular Chondrocytes and Mesenchymal Stromal Cells. Cells 2023; 12:1659. [PMID: 37371129 DOI: 10.3390/cells12121659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 06/07/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023] Open
Abstract
Elaborate bioreactor cultivation or expensive growth factor supplementation can enhance extracellular matrix production in engineered neocartilage to provide sufficient mechanical resistance. We here investigated whether raising extracellular calcium levels in chondrogenic cultures to physiologically relevant levels would provide a simple and inexpensive alternative to enhance cartilage neogenesis from human articular chondrocytes (AC) or bone marrow-derived mesenchymal stromal cells (BMSC). Interestingly, AC and BMSC-derived chondrocytes showed an opposite response to a calcium increase from 1.8 mM to 8 mM by which glycosaminoglycan (GAG) and collagen type II production were elevated during BMSC chondrogenesis but depressed in AC, leading to two-fold higher GAG/DNA values in BMSC-based neocartilage compared to the AC group. According to control treatments with Mg2+ or sucrose, these effects were specific for CaCl2 rather than divalent cations or osmolarity. Importantly, undesired pro-hypertrophic traits were not stimulated by calcium treatment. Specific induction of PTHrP mRNA and protein by 8.0mM calcium only in AC, along with negative effects of recombinant PTHrP1-34 on cartilage matrix production, suggested that the PTHrP pathway contributed to the detrimental effects in AC-based neocartilage. Altogether, raising extracellular calcium levels was discovered as a novel, simple and inexpensive stimulator for BMSC-based cartilage neogenesis without the need for special bioreactors, whereas such conditions should be avoided for AC.
Collapse
Affiliation(s)
- Tim Hammersen
- Research Center for Experimental Orthopaedics, Department of Orthopaedics, Heidelberg University Hospital, 69118 Heidelberg, Germany
| | - Justyna Buchert
- Research Center for Experimental Orthopaedics, Department of Orthopaedics, Heidelberg University Hospital, 69118 Heidelberg, Germany
| | - Severin Zietzschmann
- Orthopaedic Hospital, Department of Orthopaedics, Heidelberg University Hospital, 69118 Heidelberg, Germany
| | - Solvig Diederichs
- Research Center for Experimental Orthopaedics, Department of Orthopaedics, Heidelberg University Hospital, 69118 Heidelberg, Germany
| | - Wiltrud Richter
- Research Center for Experimental Orthopaedics, Department of Orthopaedics, Heidelberg University Hospital, 69118 Heidelberg, Germany
| |
Collapse
|
5
|
Liu W, Feng M, Xu P. From regeneration to osteoarthritis in the knee joint: The role shift of cartilage-derived progenitor cells. Front Cell Dev Biol 2022; 10:1010818. [PMID: 36340024 PMCID: PMC9630655 DOI: 10.3389/fcell.2022.1010818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 09/30/2022] [Indexed: 12/02/2022] Open
Abstract
A mount of growing evidence has proven that cartilage-derived progenitor cells (CPCs) harbor strong proliferation, migration, andmultiple differentiation potentials over the past 2 decades. CPCs in the stage of immature tissue play an important role in cartilage development process and injured cartilage repair in the young and active people. However, during maturation and aging, cartilage defects cannot be completely repaired by CPCs in vivo. Recently, tissue engineering has revealed that repaired cartilage defects with sufficient stem cell resources under good condition and bioactive scaffolds in vitro and in vivo. Chronic inflammation in the knee joint limit the proliferation and chondrogenesis abilities of CPCs, which further hampered cartilage healing and regeneration. Neocartilage formation was observed in the varus deformity of osteoarthritis (OA) patients treated with offloading technologies, which raises the possibility that organisms could rebuild cartilage structures spontaneously. In addition, nutritionmetabolismdysregulation, including glucose and free fatty acid dysregulation, could influence both chondrogenesis and cartilage formation. There are a few reviews about the advantages of CPCs for cartilage repair, but few focused on the reasons why CPCs could not repair the cartilage as they do in immature status. A wide spectrum of CPCs was generated by different techniques and exhibited substantial differences. We recently reported that CPCs maybe are as internal inflammation sources during cartilage inflammaging. In this review, we further streamlined the changes of CPCs from immature development to maturation and from healthy status to OA advancement. The key words including “cartilage derived stem cells”, “cartilage progenitor cells”, “chondroprogenitor cells”, “chondroprogenitors” were set for latest literature searching in PubMed and Web of Science. The articles were then screened through titles, abstracts, and the full texts in sequence. The internal environment including long-term inflammation, extendedmechanical loading, and nutritional elements intake and external deleterious factors were summarized. Taken together, these results provide a comprehensive understanding of the underlying mechanism of CPC proliferation and differentiation during development, maturation, aging, injury, and cartilage regeneration in vivo.
Collapse
Affiliation(s)
- Wenguang Liu
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Meng Feng
- Department of Orthopedics, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Peng Xu
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
- *Correspondence: Peng Xu,
| |
Collapse
|