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Wu SC, Chang CH, Chang LH, Wu CW, Chen JW, Chen CH, Lin YS, Chang JK, Ho ML. Simvastatin Enhances the Chondrogenesis But Not the Osteogenesis of Adipose-Derived Stem Cells in a Hyaluronan Microenvironment. Biomedicines 2021; 9:biomedicines9050559. [PMID: 34067739 PMCID: PMC8156330 DOI: 10.3390/biomedicines9050559] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 05/11/2021] [Accepted: 05/14/2021] [Indexed: 11/16/2022] Open
Abstract
Directing adipose-derived stem cells (ADSCs) toward chondrogenesis is critical for ADSC-based articular cartilage regeneration. Simvastatin (SIM) was reported to promote both chondrogenic and osteogenic differentiation of ADSCs by upregulating bone morphogenetic protein-2 (BMP-2). We previously found that ADSC chondrogenesis is initiated and promoted in a hyaluronan (HA) microenvironment (HAM). Here, we further hypothesized that SIM augments HAM-induced chondrogenesis but not osteogenesis of ADSCs. ADSCs were treated with SIM in a HAM (SIM plus HAM) by HA-coated wells or HA-enriched fibrin (HA/Fibrin) hydrogel, and chondrogenic differentiation of ADSCs was evaluated. SIM plus HAM increased chondrogenesis more than HAM or SIM alone, including cell aggregation, chondrogenic gene expression (collagen type II and aggrecan) and cartilaginous tissue formation (collagen type II and sulfated glycosaminoglycan). In contrast, SIM-induced osteogenesis in ADSCs was reduced in SIM plus HAM, including mRNA expression of osteogenic genes, osteocalcin and alkaline phosphatase (ALP), ALP activity and mineralization. SIM plus HAM also showed the most effective increases in the mRNA expression of BMP-2 and transcription factors of SOX-9 and RUNX-2 in ADSCs, while these effects were reversed by CD44 blockade. HAM suppressed the levels of JNK, p-JNK, P38 and p-P38 in ADSCs, and SIM plus HAM also decreased SIM-induced phosphorylated JNK and p38 levels. In addition, SIM enhanced articular cartilage regeneration, as demonstrated by implantation of an ADSCs/HA/Fibrin construct in an ex vivo porcine articular chondral defect model. The results from this study indicate that SIM may be an enhancer of HAM-initiated MSC-based chondrogenesis and avoid osteogenesis.
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Affiliation(s)
- Shun-Cheng Wu
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan; (S.-C.W.); (L.-H.C.); (C.-W.W.); (J.-W.C.); (C.-H.C.); (Y.-S.L.)
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan;
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80701, Taiwan
- Post-Baccalaureate Program in Nursing, Asia University, Taichung 41354, Taiwan
| | - Chih-Hsiang Chang
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan;
| | - Ling-Hua Chang
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan; (S.-C.W.); (L.-H.C.); (C.-W.W.); (J.-W.C.); (C.-H.C.); (Y.-S.L.)
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan;
| | - Che-Wei Wu
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan; (S.-C.W.); (L.-H.C.); (C.-W.W.); (J.-W.C.); (C.-H.C.); (Y.-S.L.)
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan;
| | - Jhen-Wei Chen
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan; (S.-C.W.); (L.-H.C.); (C.-W.W.); (J.-W.C.); (C.-H.C.); (Y.-S.L.)
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan;
| | - Chung-Hwan Chen
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan; (S.-C.W.); (L.-H.C.); (C.-W.W.); (J.-W.C.); (C.-H.C.); (Y.-S.L.)
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan;
- Department of Orthopaedics, College of Medicine, Kaohsiung Medical University, Kaohsiung 80701, Taiwan
- Division of Adult Reconstruction Surgery, Department of Orthopedics, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80701, Taiwan
- Department of Orthopedics, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung Medical University, Kaohsiung 80701, Taiwan
| | - Yi-Shan Lin
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan; (S.-C.W.); (L.-H.C.); (C.-W.W.); (J.-W.C.); (C.-H.C.); (Y.-S.L.)
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan;
| | - Je-Ken Chang
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan; (S.-C.W.); (L.-H.C.); (C.-W.W.); (J.-W.C.); (C.-H.C.); (Y.-S.L.)
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan;
- Department of Orthopaedics, College of Medicine, Kaohsiung Medical University, Kaohsiung 80701, Taiwan
- Correspondence: (J.-K.C.); (M.-L.H.)
| | - Mei-Ling Ho
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan; (S.-C.W.); (L.-H.C.); (C.-W.W.); (J.-W.C.); (C.-H.C.); (Y.-S.L.)
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan;
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80701, Taiwan
- Department of Physiology, College of Medicine, Kaohsiung Medical University, Kaohsiung 80701, Taiwan
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80701, Taiwan
- Correspondence: (J.-K.C.); (M.-L.H.)
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Li T, Liu B, Chen K, Lou Y, Jiang Y, Zhang D. Small molecule compounds promote the proliferation of chondrocytes and chondrogenic differentiation of stem cells in cartilage tissue engineering. Biomed Pharmacother 2020; 131:110652. [PMID: 32942151 DOI: 10.1016/j.biopha.2020.110652] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 08/15/2020] [Accepted: 08/17/2020] [Indexed: 02/09/2023] Open
Abstract
The application of tissue engineering to generate cartilage is limited because of low proliferative ability and unstable phenotype of chondrocytes. The sources of cartilage seed cells are mainly chondrocytes and stem cells. A variety of methods have been used to obtain large numbers of chondrocytes, including increasing chondrocyte proliferation and stem cell chondrogenic differentiation via cytokines, genes, and proteins. Natural or synthetic small molecule compounds can provide a simple and effective method to promote chondrocyte proliferation, maintain a stable chondrocyte phenotype, and promote stem cell chondrogenic differentiation. Therefore, the study of small molecule compounds is of great importance for cartilage tissue engineering. Herein, we review a series of small molecule compounds and their mechanisms that can promote chondrocyte proliferation, maintain chondrocyte phenotype, or induce stem cell chondrogenesis. The studies in this field represent significant contributions to the research in cartilage tissue engineering and regenerative medicine.
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Affiliation(s)
- Tian Li
- Department of Plastic and Reconstructive Surgery, The First Bethune Hospital of Jilin University, Changchun, Jilin, People's Republic of China
| | - Bingzhang Liu
- Department of Plastic and Reconstructive Surgery, The First Bethune Hospital of Jilin University, Changchun, Jilin, People's Republic of China
| | - Kang Chen
- Department of Plastic and Reconstructive Surgery, The First Bethune Hospital of Jilin University, Changchun, Jilin, People's Republic of China
| | - Yingyue Lou
- Department of Plastic and Reconstructive Surgery, The First Bethune Hospital of Jilin University, Changchun, Jilin, People's Republic of China
| | - Yuhan Jiang
- Department of Plastic and Reconstructive Surgery, The First Bethune Hospital of Jilin University, Changchun, Jilin, People's Republic of China
| | - Duo Zhang
- Department of Plastic and Reconstructive Surgery, The First Bethune Hospital of Jilin University, Changchun, Jilin, People's Republic of China.
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Zhang Y, Yu J, Zhang J, Hua Y. Simvastatin With PRP Promotes Chondrogenesis of Bone Marrow Stem Cells In Vitro and Wounded Rat Achilles Tendon-Bone Interface Healing In Vivo. Am J Sports Med 2019; 47:729-739. [PMID: 30668918 DOI: 10.1177/0363546518819108] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Tendons and ligaments are joined to bone in a specialized interface that transmits force from muscle to bone and permits body movement. Tendon/ligament injuries always occur in the interface areas, and injured tendons/ligaments have a limited healing response because the insertion site is composed of a fibrocartilaginous zone. PURPOSE To study the effect of simvastatin with platelet-rich plasma (PRP) on chondrogenesis of rat bone marrow stem cells (BMSCs) in vitro and wounded rat Achilles tendon-bone interface healing in vivo. STUDY DESIGN Controlled laboratory study. METHODS The in vitro model was performed by the culture of rat BMSCs with various concentrations of simvastatin (0, 10, 50, 100 nM) for 2 weeks. The effect of simvastatin on the chondrogenic differentiation of the BMSCs was examined by histochemical analysis and real-time quantitative reverse transcription polymerase chain reaction. The in vivo model was carried out by testing the healing effect of simvastatin with PRP on 12 wounded rat Achilles tendon-bone interfaces. RESULTS Simvastatin induced chondrogenic differentiation of rat BMSCs in a concentration-dependent manner as evidenced by histological staining and real-time quantitative reverse transcription polymerase chain reaction. The wounds treated with simvastatin alone or with simvastatin-containing PRP gel healed much faster than the wounds treated with saline alone or PRP alone. Histological analysis showed that higher percentages of healed tissues were positively stained with safranin O and fast green in wounds treated with simvastatin-containing PRP gel than in the other 3 groups. Immunohistochemical analysis further demonstrated these findings, as evidenced by more positively stained healed tissues with collagen I and II antibodies in the wound areas treated with simvastatin-containing PRP gel than the other 3 groups. CONCLUSION The combination of simvastatin with PRP induced chondrogenesis of BMSCs in vitro and enhanced fibrocartilage formation in vivo. The simvastatin-PRP gel treatment promotes wounded tendon-bone interface healing in clinical treatment. CLINICAL RELEVANCE The combination of simvastatin with PRP may be a good clinical treatment for wounded tendon/ligament junction healing, especially for acute sports-related tendon/ligament injuries.
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Affiliation(s)
- Ying Zhang
- Department of Orthopedics, Jinan Central Hospital Affiliated to Shandong University Medical School, Jinan, China
| | - Jing Yu
- Department of Anesthesiology, Jinan Central Hospital Affiliated to Shandong University Medical School, Jinan, China
| | - Jiefeng Zhang
- Department of Trauma Surgery, Taian City Central Hospital, Taian, China
| | - Yongxin Hua
- Department of Orthopedics, Jinan Central Hospital Affiliated to Shandong University Medical School, Jinan, China
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Abstract
Osteoarthritis is characterized by a chronic, progressive and irreversible degradation of the articular cartilage associated with joint inflammation and a reparative bone response. More than 100 million people are affected by this condition worldwide with significant health and welfare costs. Our available treatment options in osteoarthritis are extremely limited. Chondral or osteochondral grafts have shown some promising results but joint replacement surgery is by far the most common therapeutic approach. The difficulty lies on the limited regeneration capacity of the articular cartilage, poor blood supply and the paucity of resident progenitor stem cells. In addition, our poor understanding of the molecular signalling pathways involved in the senescence and apoptosis of chondrocytes is a major factor restricting further progress in the area. This review focuses on molecules and approaches that can be implemented to delay or even rescue chondrocyte apoptosis. Ways of modulating the physiologic response to trauma preventing chondrocyte death are proposed. The use of several cytokines, growth factors and advances made in altering several of the degenerative genetic pathways involved in chondrocyte apoptosis and degradation are also presented. The suggested approaches can help clinicians to improve cartilage tissue regeneration.
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Affiliation(s)
- Ippokratis Pountos
- Academic Department of Trauma & Orthopaedics, School of Medicine, University of Leeds, UK.
| | - Peter V Giannoudis
- Academic Department of Trauma & Orthopaedics, School of Medicine, University of Leeds, UK; NIHR Leeds Biomedical Research Center, Chapel Allerton Hospital, Leeds, UK.
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Statins do not inhibit the FGFR signaling in chondrocytes. Osteoarthritis Cartilage 2017; 25:1522-1530. [PMID: 28583899 DOI: 10.1016/j.joca.2017.05.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 05/19/2017] [Accepted: 05/25/2017] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Statins are widely used drugs for cholesterol lowering, which were recently found to counteract the effects of aberrant fibroblast growth factor receptor (FGFR3) signaling in cell and animal models of FGFR3-related chondrodysplasia. This opened an intriguing therapeutic possibility for human dwarfing conditions caused by gain-of-function mutations in FGFR3, although the mechanism of statin action on FGFR3 remains unclear. Here, we determine the effect of statins on FGFR signaling in chondrocytes. DESIGN Cultured chondrocyte cell lines, mouse embryonic tibia cultures and limb bud micromasses were treated with FGF2 to activate FGFR signaling. The effects of atorvastatin, fluvastatin, lovastatin and pravastatin on FGFR3 protein stability and on FGFR-mediated chondrocyte growth-arrest, loss of extracellular matrix (ECM), induction of premature senescence and hypertrophic differentiation were evaluated. RESULTS Statins did not alter the level of FGFR3 protein expression nor produce any effect on FGFR-mediated inhibition of chondrocyte proliferation and hypertrophic differentiation in cultured chondrocyte cell lines, mouse tibia cultures or limb bud micromasses. CONCLUSION We conclude that statins do not inhibit the FGFR signaling in chondrocytes. Therefore the statin-mediated rescue of FGFR3-related chondrodysplasia, described before, is likely not intrinsic to the growth plate cartilage.
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Zhang S, Matsushita T, Kuroda R, Nishida K, Matsuzaki T, Matsumoto T, Takayama K, Nagai K, Oka S, Tabata Y, Nagamune K, Kurosaka M. Local Administration of Simvastatin Stimulates Healing of an Avascular Meniscus in a Rabbit Model of a Meniscal Defect. Am J Sports Med 2016; 44:1735-43. [PMID: 27159292 DOI: 10.1177/0363546516638342] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Repair of an avascular meniscus is challenging because of its low capacity for healing. Several reports have shown that simvastatin stimulates the anabolic activity of intervertebral fibrochondrocytes, suggesting that simvastatin may be used for the treatment of meniscal defects. PURPOSE To test whether the local administration of simvastatin stimulates healing of an avascular meniscus in rabbits. STUDY DESIGN Controlled laboratory study. METHODS In 30 Japanese White rabbits, a cylindrical defect (1.5-mm diameter) was introduced into the avascular zone of the anterior part of the medial meniscus in bilateral knees. Either a gelatin hydrogel (control group) or simvastatin-conjugated gelatin hydrogel (simvastatin group) was implanted into the defect. Histological assessments were performed using qualitative scoring systems, and immunohistochemical analysis was performed at 12 weeks after surgery. The occupation ratio (OR) and safranin O staining occupation ratio (SOR) were evaluated quantitatively at each time point. Stiffness of the regenerated tissue was analyzed biomechanically at 12 weeks after surgery. Rabbit meniscal cells were cultured in the presence or absence of 0.5 μM simvastatin, and then real-time polymerase chain reaction was performed to evaluate gene expression. RESULTS The qualitative score was significantly higher in the simvastatin group after 8 and 12 weeks (P = .031 and .035, respectively). The mean OR and SOR were also significantly higher in the simvastatin group (OR at 8 weeks: 0.396 ± 0.019 [control] vs 0.564 ± 0.123 [simvastatin], P = .008; OR at 12 weeks: 0.451 ± 0.864 [control] vs 0.864 ± 0.035 [simvastatin], P = .001; SOR at 8 weeks: 0.071 ± 0.211 [control] vs 0.487 ± 0.430 [simvastatin], P = .009; SOR at 12 weeks: 0.093 ± 0.088 [control] vs 0.821 ± 0.051 [simvastatin], P = .006). Immunohistochemical analysis showed that at 12 weeks, the reparative tissue was more strongly positive for type I collagen (COL1), type II collagen (COL2), bone morphogenetic protein 2 (BMP-2), and BMP-7 in the simvastatin group than in the control group. Biomechanical analysis showed significantly higher stiffness in the simvastatin group (2.417 ± 1.593 N/ms [control] vs 5.172 ± 1.078 N/ms [simvastatin]; P = .005). In rabbit meniscal cells, BMP-2 and BMP-7 were upregulated after 4 and 8 hours and after 7 and 14 days, whereas COL1A1 and COL2A1 were significantly upregulated by simvastatin after 7 and 14 days. CONCLUSION The local administration of simvastatin promotes the regeneration of an avascular meniscus in the rabbit model of a meniscal defect. The mechanism may involve the upregulation of BMPs and the subsequent upregulation of COL1 and COL2. CLINICAL RELEVANCE This study suggests that simvastatin stimulated intrinsic healing of an avascular meniscus. The local administration of simvastatin is safe and inexpensive and seems to be a promising treatment of meniscal injuries.
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Affiliation(s)
- Shurong Zhang
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takehiko Matsushita
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Ryosuke Kuroda
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Kyohei Nishida
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Tokio Matsuzaki
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Tomoyuki Matsumoto
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Koji Takayama
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Kanto Nagai
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Shinya Oka
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yasuhiko Tabata
- Field of Tissue Engineering, Department of Biomaterials, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Kouki Nagamune
- Department of Human and Artificial Intelligent Systems, Graduate School of Engineering, University of Fukui, Fukui, Japan
| | - Masahiro Kurosaka
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
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Bhardwaj N, Devi D, Mandal BB. Tissue-engineered cartilage: the crossroads of biomaterials, cells and stimulating factors. Macromol Biosci 2014; 15:153-82. [PMID: 25283763 DOI: 10.1002/mabi.201400335] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Revised: 08/25/2014] [Indexed: 02/06/2023]
Abstract
Damage to cartilage represents one of the most challenging tasks of musculoskeletal therapeutics due to its limited propensity for healing and regenerative capabilities. Lack of current treatments to restore cartilage tissue function has prompted research in this rapidly emerging field of tissue regeneration of functional cartilage tissue substitutes. The development of cartilaginous tissue largely depends on the combination of appropriate biomaterials, cell source, and stimulating factors. Over the years, various biomaterials have been utilized for cartilage repair, but outcomes are far from achieving native cartilage architecture and function. This highlights the need for exploration of suitable biomaterials and stimulating factors for cartilage regeneration. With these perspectives, we aim to present an overview of cartilage tissue engineering with recent progress, development, and major steps taken toward the generation of functional cartilage tissue. In this review, we have discussed the advances and problems in tissue engineering of cartilage with strong emphasis on the utilization of natural polymeric biomaterials, various cell sources, and stimulating factors such as biophysical stimuli, mechanical stimuli, dynamic culture, and growth factors used so far in cartilage regeneration. Finally, we have focused on clinical trials, recent innovations, and future prospects related to cartilage engineering.
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Affiliation(s)
- Nandana Bhardwaj
- Seri-Biotechnology Unit, Life Science Division, Institute of Advanced Study in Science and Technology, Guwahati, 781035, India
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Liu S, Shao Y, Lin Q, Liu H, Zhang D. 7,8-Dihydroxy coumarin promotes chondrogenic differentiation of adipose-derived mesenchymal stem cells. J Int Med Res 2013; 41:82-96. [PMID: 23569133 DOI: 10.1177/0300060513476614] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
OBJECTIVE To investigate the effects of 7,8-dihydroxy coumarin on the chondrogenic differentiation of rat adipose-derived mesenchymal stem cells (ADMSCs). METHODS ADMSCs were cultured using a micromass suspension method and incubated with different concentrations of 7,8-dihydroxy coumarin and transforming growth factor (TGF)-β1 for 3 weeks: group A (negative control, no drug treatment); group B (positive control, 10 ng/ml TGF-β1); groups C, D and E (incubated with 25, 50 and 100 µg/ml 7,8-dihydroxy coumarin, respectively); groups F, G and H (incubated with 25, 50 and 100 µg/ml 7,8-dihydroxy coumarin, respectively, plus 10 ng/ml TGF-β1). Markers of chondrogenic differentiation were measured using histology, immunohistochemistry, enzyme-linked immunosorbent assay and reverse transcription-polymerase chain reaction. RESULTS When used alone, 7,8-dihydroxy coumarin only weakly induced the chondrogenic differentiation of ADMSCs. 7,8-Dihydroxy coumarin used in combination with TGF-β1 strongly induced chondrogenic differentiation of ADMSCs. For some of the markers of chondrogenic differentiation, the extent of the induction was 7,8-dihydroxy coumarin dose-dependent. CONCLUSIONS 7,8-Dihydroxy coumarin appears to work synergistically with TGF-β1 to strongly induce chondrogenic differentiation of rat-derived ADMSCs.
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Affiliation(s)
- Shanshan Liu
- Department of Plastic and Reconstructive Surgery, First Hospital of Jilin University, Changchun, Jilin Province, China
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