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Wu T, Wu Y, Cao Z, Zhao L, Lv J, Li J, Xu Y, Zhang P, Liu X, Sun Y, Cheng M, Tang K, Jiang X, Ling C, Yao Q, Zhu Y. Cell-free and cytokine-free self-assembling peptide hydrogel-polycaprolactone composite scaffolds for segmental bone defects. Biomater Sci 2023; 11:840-853. [PMID: 36512317 DOI: 10.1039/d2bm01609e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Segmental bone defects over the self-healing threshold are a major challenge for orthopedics. Despite the advancements in clinical practice, traditional tissue engineering methods are limited by the addition of heterogeneous cells and cytokines, leading to carcinoma or other adverse effects. Here, we present a cell-free and cytokine-free strategy using an ECM-mimetic self-assembling peptide hydrogel (SAPH)- polycaprolactone (PCL) composite scaffold. The hydrophilic SAPH endows the rigid PCL scaffold with excellent biocompatibility and preference for osteogenesis induction. The autologous cells around the bone defect site immediately grew, proliferated, and secreted ECM and cytokines after contacting the implanted SAPH-PCL composite scaffold, and the bone repair of rabbit ulnar segmental bone defect was achieved in just six months. Quantitative proteomic analysis reveals that the SAPH-PCL composite scaffold accelerates osteoblastogenesis, osteoclastogenesis, and angiogenesis with moderate immune responses and negligible effects on pathological fibrosis. These findings have important implications for the potential clinical applications of the SAPH-PCL composite scaffold in patients with segmental bone defects and identify the mechanisms of action for accelerated segmental bone defect repair.
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Affiliation(s)
- Tong Wu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 211816, Nanjing, China.
| | - Yilun Wu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 211816, Nanjing, China.
| | - Zhicheng Cao
- Department of Orthopaedic Surgery, Institute of Digital Medicine, Nanjing First Hospital, Nanjing Medical University, 210006, Nanjing, China.
| | - Lulu Zhao
- College of Pharmaceutical Sciences, Nanjing Tech University, 211816, Nanjing, China
| | - Jiayi Lv
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 211816, Nanjing, China.
| | - Jiayi Li
- Department of Orthopaedic Surgery, Institute of Digital Medicine, Nanjing First Hospital, Nanjing Medical University, 210006, Nanjing, China.
| | - Yue Xu
- College of Pharmaceutical Sciences, Nanjing Tech University, 211816, Nanjing, China
| | - Po Zhang
- Department of Orthopaedic Surgery, Institute of Digital Medicine, Nanjing First Hospital, Nanjing Medical University, 210006, Nanjing, China.
| | - Xu Liu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 211816, Nanjing, China.
| | - Yuzhi Sun
- Department of Orthopaedic Surgery, Institute of Digital Medicine, Nanjing First Hospital, Nanjing Medical University, 210006, Nanjing, China.
| | - Min Cheng
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 211816, Nanjing, China.
| | - Kexin Tang
- College of Pharmaceutical Sciences, Nanjing Tech University, 211816, Nanjing, China
| | - Xiao Jiang
- Department of Orthopaedic Surgery, Institute of Digital Medicine, Nanjing First Hospital, Nanjing Medical University, 210006, Nanjing, China.
| | - Chen Ling
- Department of Orthopaedic Surgery, Institute of Digital Medicine, Nanjing First Hospital, Nanjing Medical University, 210006, Nanjing, China.
| | - Qingqiang Yao
- Department of Orthopaedic Surgery, Institute of Digital Medicine, Nanjing First Hospital, Nanjing Medical University, 210006, Nanjing, China.
| | - Yishen Zhu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 211816, Nanjing, China.
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Figueiredo A, Leal EC, Carvalho E. Protein tyrosine phosphatase 1B inhibition as a potential therapeutic target for chronic wounds in diabetes. Pharmacol Res 2020; 159:104977. [PMID: 32504834 DOI: 10.1016/j.phrs.2020.104977] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 05/19/2020] [Accepted: 05/26/2020] [Indexed: 12/14/2022]
Abstract
Non-healing diabetic foot ulcers (DFUs) are a serious complication in diabetic patients. Their incidence has increased in recent years. Although there are several treatments for DFUs, they are often not effective enough to avoid amputation. Protein tyrosine phosphatase 1B (PTP1B) is expressed in most tissues and is a negative regulator of important metabolic pathways. PTP1B is overexpressed in tissues under diabetic conditions. Recently, PTP1B inhibition has been found to enhance wound healing. PTP1B inhibition decreases inflammation and bacterial infection at the wound site and promotes angiogenesis and tissue regeneration, thereby facilitating diabetic wound healing. In summary, the pharmacological modulation of PTP1B activity may help treat DFUs, suggesting that PTP1B inhibition is an outstanding therapeutic target.
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Affiliation(s)
- Ana Figueiredo
- Center for Neuroscience and Cell Biology, University of Coimbra, Portugal; Institute for Interdisciplinary Research, University of Coimbra, Portugal
| | - Ermelindo C Leal
- Center for Neuroscience and Cell Biology, University of Coimbra, Portugal; Institute for Interdisciplinary Research, University of Coimbra, Portugal.
| | - Eugénia Carvalho
- Center for Neuroscience and Cell Biology, University of Coimbra, Portugal; Institute for Interdisciplinary Research, University of Coimbra, Portugal; Department of Geriatrics, and Arkansas Children's Research Institute, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72202, USA
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Smith AM, Maguire-Nguyen KK, Rando TA, Zasloff MA, Strange KB, Yin VP. The protein tyrosine phosphatase 1B inhibitor MSI-1436 stimulates regeneration of heart and multiple other tissues. NPJ Regen Med 2017; 2:4. [PMID: 29302341 PMCID: PMC5677970 DOI: 10.1038/s41536-017-0008-1] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 01/13/2017] [Accepted: 01/20/2017] [Indexed: 12/13/2022] Open
Abstract
Regenerative medicine holds substantial promise for repairing or replacing tissues and organs damaged by disease, injury, and degeneration. Much of the field has focused on development of cell-based therapeutics, gene-based therapeutics, and tissue engineering-based therapeutics. In contrast, development of small molecule regenerative medicine therapies is an emerging area. Using the adult zebrafish as a novel screening platform, we identified MSI-1436 as a first-in-class regenerative medicine drug candidate. MSI-1436 is a naturally occurring aminosterol that inhibits protein tyrosine phosphatase 1B. Treatment of adult zebrafish by intraperitoneal injection of MSI-1436 increased the rate of regeneration of the amputated caudal fin, which is comprised of bone, connective, skin, vascular and nervous tissues and also increased the rate of adult zebrafish heart regeneration. Intraperitoneal administration of MSI-1436 to adult mice for 4 weeks after induction of myocardial infarction increased survival, improved heart function, reduced infarct size, reduced ventricular wall thinning and increased cardiomyocyte proliferation. Satellite cell activation in injured mouse skeletal muscle was stimulated by MSI-1436. MSI-1436 was well tolerated by patients in Phase 1 and 1b obesity and type 2 diabetes clinical trials. Doses effective at stimulating regeneration are 5–50-times lower than the maximum well tolerated human dose. The demonstrated safety and well established pharmacological properties of MSI-1436 underscore the potential of this molecule as a novel treatment for heart attack and multiple other degenerative diseases. A naturally occurring small molecule shows promise as a drug for tissue and organ repair and regeneration. Viravuth Yin of the Kathryn W. Davis Center for Regenerative Biology and Medicine with colleagues in the US found that treating zebrafish with an intraperitoneal injection of MSI-1436, which inhibits the enzyme ‘protein tyrosine phosphatase 1B’, increased the rate of regeneration of an amputated caudal fin and of partially removed heart muscle without apparent tissue malformation. Intraperitoneal injection of MSI-1436 in adult mice also reduced the size of an induced heart infarction, improved survivability, triggered new heart muscle formation and stimulated regeneration after skeletal muscle injury. Effective doses for tissue regeneration in both animals were much lower than the maximum tolerated doses found for humans in clinical trials for potential treatment of obesity and diabetes.
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Affiliation(s)
- Ashley M Smith
- Kathryn W. Davis Center for Regenerative Biology and Medicine, MDI Biological Laboratory, Salisbury Cove, ME 04672 USA
| | - Katie K Maguire-Nguyen
- Department of Neurology, Stanford University Medical Center, Stanford, CA 94305-5235 USA
| | - Thomas A Rando
- Department of Neurology, Stanford University Medical Center, Stanford, CA 94305-5235 USA
| | - Michael A Zasloff
- Novo Biosciences, Bar Harbor, ME 04609 USA.,MedStar Georgetown Transplant Institute, Georgetown University Hospital, Washington DC, 20007 USA
| | - Kevin B Strange
- Kathryn W. Davis Center for Regenerative Biology and Medicine, MDI Biological Laboratory, Salisbury Cove, ME 04672 USA.,Novo Biosciences, Bar Harbor, ME 04609 USA
| | - Viravuth P Yin
- Kathryn W. Davis Center for Regenerative Biology and Medicine, MDI Biological Laboratory, Salisbury Cove, ME 04672 USA.,Novo Biosciences, Bar Harbor, ME 04609 USA
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Rydell-Törmänen K, Zhou XH, Hallgren O, Einarsson J, Eriksson L, Andersson-Sjöland A, Westergren-Thorsson G. Aberrant nonfibrotic parenchyma in idiopathic pulmonary fibrosis is correlated with decreased β-catenin inhibition and increased Wnt5a/b interaction. Physiol Rep 2016; 4:4/5/e12727. [PMID: 26997628 PMCID: PMC4823602 DOI: 10.14814/phy2.12727] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Idiopathic pulmonary fibrosis (IPF), an insidious disease with grave prognosis, is characterized by heterogeneous fibrosis with densely fibrotic areas surrounded by nonfibrotic normal‐looking tissue, believed to reflect a temporal development. The etiology is incompletely elucidated, but aberrant wound healing is believed to be involved. Embryonic signaling pathways, including Wnt signaling, are reactivated in wound healing, and we therefore aimed to investigate Wnt signaling, and hypothesized that Wnt signaling would correspond to degree of fibrosis. Material from 10 patients with IPF were included (four diagnostic biopsies and six donated lungs) and compared to healthy controls (n = 7). We investigated markers of Wnt signaling (β‐catenin, Wnt3a, ICAT, Wnt5a/b, DAAM1 and NLK) histologically in lung parenchyma with variable degree of fibrosis. Our results suggest that Wnt signaling is significantly altered (P < 0.05) already in normal‐looking parenchyma. The expression of Wnt3a and ICAT decreased (both P < 0.01) in IPF compared to healthy lungs, whereas β‐catenin, Wnt5a/b, DAAM1 and NLK increased (P < 0.05 for all). ICAT is further decreased in dense fibrosis compared to normal‐looking parenchyma in IPF (P < 0.001). On the basis of our results, we conclude that from a Wnt perspective, there is no normal parenchyma in IPF, and Wnt signaling corresponds to degree of fibrosis. In addition, β‐catenin and Wnt5a appears coupled, and decreased inhibition of β‐catenin may be involved. We suggest that the interaction between β‐catenin, ICAT, and Wnt5a/b may represent an important research area and potential target for therapeutic intervention.
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Affiliation(s)
| | - Xiao-Hong Zhou
- Department of BioSciences, RIA iMed, AstraZeneca R&D Gothenburg, Mölndal, Sweden
| | - Oskar Hallgren
- Lung Biology, Department Experimental Medical Science, Lund University, Lund, Sweden Respiratory Medicine and Allergology, Department Clinical Sciences, Lund University, Lund, Sweden
| | - Jonas Einarsson
- Respiratory Medicine and Allergology, Department Clinical Sciences, Lund University, Lund, Sweden Department Respiratory Medicine and Allergology, Skåne University Hospital, Lund, Sweden
| | - Leif Eriksson
- Lung Biology, Department Experimental Medical Science, Lund University, Lund, Sweden Respiratory Medicine and Allergology, Department Clinical Sciences, Lund University, Lund, Sweden
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Tuuminen R, Loukovaara S. Statin medication in patients with epiretinal membrane is associated with low intravitreal EPO, TGF-beta-1, and VEGF levels. Clin Ophthalmol 2016; 10:921-8. [PMID: 27284236 PMCID: PMC4883812 DOI: 10.2147/opth.s105686] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Background In eyes with idiopathic epiretinal membrane (iERM), the intravitreal growth factor and cytokine levels may associate with postvitrectomy outcomes. Here, we have analyzed the perioperative intravitreal protein levels of potent vasoactive, proinflammatory, and extracellular matrix-remodeling factors in iERM eyes and evaluated the postvitrectomy outcomes. Methods This was an institutional, observational study. Eyes operated on for iERM (n=26) were analyzed according to the use of statin medication. Vitreous samples were subjected to protein measurements of angiopoietin-1 and -2, erythropoietin, transforming growth factor-β1, and vascular endothelial growth factor by enzyme-linked immunosorbent assay, and of matrix metalloproteinase-2 and -9 by gelatin zymography. One-month visual outcomes and 1-year revitrectomy rates were recorded. Results In iERM eyes of patients taking statins, intravitreal levels of erythropoietin (mean ± standard deviation, 10.8±4.9 vs 82.9±119.5 mIU/mg, P=0.003), transforming growth factor-β1 (2.3±4.7 vs 15.8±16.3 pg/mg, P=0.035), and vascular endothelial growth factor (5.5±9.9 vs 236.6±491.6 pg/mg, P=0.006) were lower than in nonstatin-treated patients. At 1-month, visual gain did not significantly differ between iERM eyes of patients with statins and those without (improvement 0.27±0.20 vs 0.16±0.38 logarithm of the minimum angle of resolution units, P=0.118). Conclusion Systemic statin therapy might have a favorable effect on intravitreal factors involved in vascular permeability, inflammation, and fibroproliferation in aging human iERM eyes.
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Affiliation(s)
- Raimo Tuuminen
- Department of Ophthalmology, Kymenlaakso Central Hospital, Kotka, Finland
| | - Sirpa Loukovaara
- Unit of Vitreoretinal Surgery, Department of Ophthalmology, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
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Kucerova L, Broz V, Arefin B, Maaroufi HO, Hurychova J, Strnad H, Zurovec M, Theopold U. The Drosophila Chitinase-Like Protein IDGF3 Is Involved in Protection against Nematodes and in Wound Healing. J Innate Immun 2015; 8:199-210. [PMID: 26694862 DOI: 10.1159/000442351] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Accepted: 11/10/2015] [Indexed: 01/06/2023] Open
Abstract
Chitinase-like proteins (CLPs) of the 18 glycosyl hydrolase family retain structural similarity to chitinases but lack enzymatic activity. Although CLPs are upregulated in several human disorders that affect regenerative and inflammatory processes, very little is known about their normal physiological function. We show that an insect CLP (Drosophila imaginal disc growth factor 3, IDGF3) plays an immune-protective role during entomopathogenic nematode (EPN) infections. During these infections, nematodes force their entry into the host via border tissues, thus creating wounds. Whole-genome transcriptional analysis of nematode-infected wild-type and Idgf3 mutant larvae have shown that, in addition to the regulation of genes related to immunity and wound closure, IDGF3 represses Jak/STAT and Wingless signaling. Further experiments have confirmed that IDGF3 has multiple roles in innate immunity. It serves as an essential component required for the formation of hemolymph clots that seal wounds, and Idgf3 mutants display an extended developmental delay during wound healing. Altogether, our findings indicate that vertebrate and invertebrate CLP proteins function in analogous settings and have a broad impact on inflammatory reactions and infections. This opens the way to further genetic analysis of Drosophila IDGF3 and will help to elucidate the exact molecular context of CLP function.
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Affiliation(s)
- Lucie Kucerova
- Department of Molecular Biosciences, Wenner-Gren Institute, Stockholm University, Stockholm, Sweden
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