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Abstract
Cell-based therapies are gaining prominence in treating a wide variety of diseases and using synthetic polymers to manipulate these cells provides an opportunity to impart function that could not be achieved using solely genetic means. Herein, we describe the utility of functional block copolymers synthesized by ring-opening metathesis polymerization (ROMP) that can insert directly into the cell membrane via the incorporation of long alkyl chains into a short polymer block leading to non-covalent, hydrophobic interactions with the lipid bilayer. Furthermore, we demonstrate that these polymers can be imbued with advanced functionalities. A photosensitizer was incorporated into these polymers to enable spatially controlled cell death by the localized generation of 1 O2 at the cell surface in response to red-light irradiation. In a broader context, we believe our polymer insertion strategy could be used as a general methodology to impart functionality onto cell-surfaces.
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Affiliation(s)
- Derek C Church
- Department of NanoEngineering, University of California San Diego, La Jolla, CA, 92093, USA
| | - Jonathan K Pokorski
- Department of NanoEngineering, University of California San Diego, La Jolla, CA, 92093, USA
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152
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Przekora A, Audemar M, Pawlat J, Canal C, Thomann JS, Labay C, Wojcik M, Kwiatkowski M, Terebun P, Ginalska G, Hermans S, Duday D. Positive Effect of Cold Atmospheric Nitrogen Plasma on the Behavior of Mesenchymal Stem Cells Cultured on a Bone Scaffold Containing Iron Oxide-Loaded Silica Nanoparticles Catalyst. Int J Mol Sci 2020; 21:ijms21134738. [PMID: 32635182 PMCID: PMC7369831 DOI: 10.3390/ijms21134738] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 06/25/2020] [Accepted: 07/01/2020] [Indexed: 12/22/2022] Open
Abstract
Low-temperature atmospheric pressure plasma was demonstrated to have an ability to generate different reactive oxygen and nitrogen species (RONS), showing wide biological actions. Within this study, mesoporous silica nanoparticles (NPs) and FexOy/NPs catalysts were produced and embedded in the polysaccharide matrix of chitosan/curdlan/hydroxyapatite biomaterial. Then, basic physicochemical and structural characterization of the NPs and biomaterials was performed. The primary aim of this work was to evaluate the impact of the combined action of cold nitrogen plasma and the materials produced on proliferation and osteogenic differentiation of human adipose tissue-derived mesenchymal stem cells (ADSCs), which were seeded onto the bone scaffolds containing NPs or FexOy/NPs catalysts. Incorporation of catalysts into the structure of the biomaterial was expected to enhance the formation of plasma-induced RONS, thereby improving stem cell behavior. The results obtained clearly demonstrated that short-time (16s) exposure of ADSCs to nitrogen plasma accelerated proliferation of cells grown on the biomaterial containing FexOy/NPs catalysts and increased osteocalcin production by the cells cultured on the scaffold containing pure NPs. Plasma activation of FexOy/NPs-loaded biomaterial resulted in the formation of appropriate amounts of oxygen-based reactive species that had positive impact on stem cell proliferation and at the same time did not negatively affect their osteogenic differentiation. Therefore, plasma-activated FexOy/NPs-loaded biomaterial is characterized by improved biocompatibility and has great clinical potential to be used in regenerative medicine applications to improve bone healing process.
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Affiliation(s)
- Agata Przekora
- Chair and Department of Biochemistry and Biotechnology, Medical University of Lublin, Chodzki 1 Street, 20-093 Lublin, Poland; (M.W.); (G.G.)
- Correspondence: (A.P.); (S.H.); (D.D.); Tel.: +48-814487026 (A.P.)
| | - Maïté Audemar
- IMCN Institute, Université catholique de Louvain, Place Louis Pasteur 1, 1348 Louvain-la-Neuve, Belgium;
| | - Joanna Pawlat
- Chair of Electrical Engineering and Electrotechnologies, Lublin University of Technology, Nadbystrzycka 38a, 20-618 Lublin, Poland; (J.P.); (M.K.); (P.T.)
| | - Cristina Canal
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 14, 08930 Barcelona, Spain; (C.C.); (C.L.)
- Barcelona Research Center in Multiscale Science and Engineering, UPC, 08019 Barcelona, Spain
- Research Centre for Biomedical Engineering (CREB), UPC, 08019 Barcelona, Spain
| | - Jean-Sébastien Thomann
- Material Research and Technology (MRT) Department, Luxembourg Institute of Science and Technology (LIST), 41 rue du Brill, L-4422 Belvaux, Luxembourg;
| | - Cédric Labay
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 14, 08930 Barcelona, Spain; (C.C.); (C.L.)
- Barcelona Research Center in Multiscale Science and Engineering, UPC, 08019 Barcelona, Spain
- Research Centre for Biomedical Engineering (CREB), UPC, 08019 Barcelona, Spain
| | - Michal Wojcik
- Chair and Department of Biochemistry and Biotechnology, Medical University of Lublin, Chodzki 1 Street, 20-093 Lublin, Poland; (M.W.); (G.G.)
| | - Michal Kwiatkowski
- Chair of Electrical Engineering and Electrotechnologies, Lublin University of Technology, Nadbystrzycka 38a, 20-618 Lublin, Poland; (J.P.); (M.K.); (P.T.)
| | - Piotr Terebun
- Chair of Electrical Engineering and Electrotechnologies, Lublin University of Technology, Nadbystrzycka 38a, 20-618 Lublin, Poland; (J.P.); (M.K.); (P.T.)
| | - Grazyna Ginalska
- Chair and Department of Biochemistry and Biotechnology, Medical University of Lublin, Chodzki 1 Street, 20-093 Lublin, Poland; (M.W.); (G.G.)
| | - Sophie Hermans
- IMCN Institute, Université catholique de Louvain, Place Louis Pasteur 1, 1348 Louvain-la-Neuve, Belgium;
- Correspondence: (A.P.); (S.H.); (D.D.); Tel.: +48-814487026 (A.P.)
| | - David Duday
- Material Research and Technology (MRT) Department, Luxembourg Institute of Science and Technology (LIST), 41 rue du Brill, L-4422 Belvaux, Luxembourg;
- Correspondence: (A.P.); (S.H.); (D.D.); Tel.: +48-814487026 (A.P.)
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153
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Cao Z, Geng X, Jiang X, Gao X, Liu K, Li Y. Melatonin Attenuates AlCl 3-Induced Apoptosis and Osteoblastic Differentiation Suppression by Inhibiting Oxidative Stress in MC3T3-E1 Cells. Biol Trace Elem Res 2020; 196:214-222. [PMID: 31502178 DOI: 10.1007/s12011-019-01893-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 09/04/2019] [Indexed: 12/11/2022]
Abstract
Aluminum (Al) inhibits osteoblast-mediated bone formation by oxidative stress, resulting in Al-induced bone disease. Melatonin (MT) has received extensive attention due to its antioxidant and maintenance of bone health effect. To evaluate the protective effect and mechanism of MT on AlCl3-induced osteoblast dysfunction, MC3T3-E1 cells were treated with MT (100 μM) and/or AlCl3 (8 μM). First, MT alleviated AlCl3-induced osteoblast dysfunction, presenting as the reduced apoptosis rate as well as increased cell viability, alkaline phosphatase (ALP) activity, and type I collagen (COL-1) level. Then, MT significantly attenuated AlCl3-induced oxidative stress, presenting as the reduced reactive oxygen species and 8-hydroxy-2'-deoxyguanosine levels as well as increased glutathione level and superoxide dismutase activity. Finally, MT protected MC3T3-E1 cells against p53-dependent apoptosis and differentiation suppression, as assessed by Caspase-3 activity, protein levels of p53, Bcl-2-associated X protein (Bax), B cell lymphoma gene 2 (Bcl-2), cytosolic Cytochrome c, Runt-related transcription factor 2 (Runx2), and Osterix, as well as the mRNA levels of Bax, Bcl-2, Runx2, Osterix, ALP, and COL-1. Overall, our findings demonstrate MT attenuates AlCl3-induced apoptosis and osteoblastic differentiation suppression by inhibiting oxidative stress in MC3T3-E1 cells.
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Affiliation(s)
- Zheng Cao
- Northeastern Science Inspection Station, China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, College of Veterinary Medicine, Northeast Agricultural University, NO. 600 Changjiang Street, Xiangfang District, Harbin, 150030, China
- Key Laboratory of the Provincial Education, Department of Heilongjiang for Common Animal Disease Prevention and Treatment, Northeast Agricultural University, Harbin, 150030, China
| | - Xue Geng
- Northeastern Science Inspection Station, China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, College of Veterinary Medicine, Northeast Agricultural University, NO. 600 Changjiang Street, Xiangfang District, Harbin, 150030, China
| | - Xinpeng Jiang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, China
| | - Xiang Gao
- Northeastern Science Inspection Station, China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, College of Veterinary Medicine, Northeast Agricultural University, NO. 600 Changjiang Street, Xiangfang District, Harbin, 150030, China
| | - Kexiang Liu
- Northeastern Science Inspection Station, China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, College of Veterinary Medicine, Northeast Agricultural University, NO. 600 Changjiang Street, Xiangfang District, Harbin, 150030, China
| | - Yanfei Li
- Northeastern Science Inspection Station, China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, College of Veterinary Medicine, Northeast Agricultural University, NO. 600 Changjiang Street, Xiangfang District, Harbin, 150030, China.
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154
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Loretelli C, Ben Nasr M, Giatsidis G, Bassi R, Lancerotto L, D'Addio F, Valderrama-Vasquez A, Scherer SS, Salvatore L, Madaghiele M, Abdelsalam A, Ippolito E, Assi E, Usuelli V, El Essawy B, Sannino A, Pietramaggiori G, Zuccotti GV, Orgill DP, Fiorina P. Embryonic stem cell extracts improve wound healing in diabetic mice. Acta Diabetol 2020; 57:883-890. [PMID: 32124076 DOI: 10.1007/s00592-020-01500-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 02/09/2020] [Indexed: 12/13/2022]
Abstract
AIMS/HYPOTHESIS Impaired wound healing significantly impacts morbidity and mortality in diabetic patients, necessitating the development of novel treatments to improve the wound healing process. We here investigated the topical use of acellular embryonic stem cell extracts (EXTs) in wound healing in diabetic db/db mice. METHODS Wounds were induced in diabetic db/db mice, which were subsequently treated with EXTs, with 3T3 fibroblast cell line protein extracts (3T3XTs) or with saline as a control. Pathology and mechanistic assays were then performed. RESULTS The in vivo topical administration of EXTs facilitates wound closure, contraction and re-epithelialization. Moreover, EXTs reduced the number of wound-infiltrating CD45+ inflammatory cells and increased the rate of repair and of angiogenesis as compared to controls. Interestingly, the EXT effect was partly enhanced by the use of a collagen-based biocompatible scaffold. In vivo, topical administration of EXTs increased the percentage of regulatory T cells in the wounded tissue, while in vitro EXT treatment reduced T cell-mediated IFN-γ production. Proteomic screening revealed 82 proteins differentially segregating in EXTs as compared to 3T3 extracts, with APEX1 identified as a key player for the observed immunomodulatory effect of EXTs. CONCLUSIONS EXTs are endowed with immunoregulatory and anti-inflammatory properties; their use improves wound healing in diabetic preclinical models.
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Affiliation(s)
- Cristian Loretelli
- International Center for T1D, Pediatric Clinical Research Center Romeo ed Enrica Invernizzi, DIBIC L. Sacco, Università degli Studi di Milano, Milan, Italy
| | - Moufida Ben Nasr
- International Center for T1D, Pediatric Clinical Research Center Romeo ed Enrica Invernizzi, DIBIC L. Sacco, Università degli Studi di Milano, Milan, Italy
- Division of Nephrology, Boston Children's Hospital, Harvard Medical School, Enders Building 5th Floor, Rm EN530, 300 Longwood Avenue, Boston, MA, 02115, USA
| | - Giorgio Giatsidis
- Tissue Engineering and Wound Healing Laboratory, Division of Plastic Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Roberto Bassi
- Division of Nephrology, Boston Children's Hospital, Harvard Medical School, Enders Building 5th Floor, Rm EN530, 300 Longwood Avenue, Boston, MA, 02115, USA
| | - Luca Lancerotto
- Department of Plastic Surgery, St. John's Hospital, NHS Lothian, Edinburgh, Scotland, UK
| | - Francesca D'Addio
- International Center for T1D, Pediatric Clinical Research Center Romeo ed Enrica Invernizzi, DIBIC L. Sacco, Università degli Studi di Milano, Milan, Italy
| | - Alessandro Valderrama-Vasquez
- Division of Nephrology, Boston Children's Hospital, Harvard Medical School, Enders Building 5th Floor, Rm EN530, 300 Longwood Avenue, Boston, MA, 02115, USA
| | - Saja Sandra Scherer
- Tissue Engineering and Wound Healing Laboratory, Division of Plastic Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Luca Salvatore
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Marta Madaghiele
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Ahmed Abdelsalam
- International Center for T1D, Pediatric Clinical Research Center Romeo ed Enrica Invernizzi, DIBIC L. Sacco, Università degli Studi di Milano, Milan, Italy
- Department of Biochemistry and Biotechnology, Heliopolis University, Cairo, Egypt
| | - Elio Ippolito
- International Center for T1D, Pediatric Clinical Research Center Romeo ed Enrica Invernizzi, DIBIC L. Sacco, Università degli Studi di Milano, Milan, Italy
| | - Emma Assi
- International Center for T1D, Pediatric Clinical Research Center Romeo ed Enrica Invernizzi, DIBIC L. Sacco, Università degli Studi di Milano, Milan, Italy
| | - Vera Usuelli
- International Center for T1D, Pediatric Clinical Research Center Romeo ed Enrica Invernizzi, DIBIC L. Sacco, Università degli Studi di Milano, Milan, Italy
| | - Basset El Essawy
- Transplantation Research Center, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
- Medicine, Al-Azhar University, Cairo, Egypt
| | - Alessandro Sannino
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Giorgio Pietramaggiori
- Tissue Engineering and Wound Healing Laboratory, Division of Plastic Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Gian Vincenzo Zuccotti
- International Center for T1D, Pediatric Clinical Research Center Romeo ed Enrica Invernizzi, DIBIC L. Sacco, Università degli Studi di Milano, Milan, Italy
- Department of Pediatrics, Buzzi Children's Hospital, Milan, Italy
| | - Dennis Paul Orgill
- Tissue Engineering and Wound Healing Laboratory, Division of Plastic Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Paolo Fiorina
- International Center for T1D, Pediatric Clinical Research Center Romeo ed Enrica Invernizzi, DIBIC L. Sacco, Università degli Studi di Milano, Milan, Italy.
- Division of Nephrology, Boston Children's Hospital, Harvard Medical School, Enders Building 5th Floor, Rm EN530, 300 Longwood Avenue, Boston, MA, 02115, USA.
- Division of Endocrinology, ASST Fatebenefratelli-Sacco, Milan, Italy.
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155
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Han X, Lu Y, Xie J, Zhang E, Zhu H, Du H, Wang K, Song B, Yang C, Shi Y, Cao Z. Zwitterionic micelles efficiently deliver oral insulin without opening tight junctions. Nat Nanotechnol 2020; 15:605-614. [PMID: 32483319 PMCID: PMC7534179 DOI: 10.1038/s41565-020-0693-6] [Citation(s) in RCA: 124] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 04/15/2020] [Indexed: 05/06/2023]
Abstract
Oral delivery of protein drugs is considered a life-changing solution for patients who require regular needle injections. However, clinical translation of oral protein formulations has been hampered by inefficient penetration of drugs through the intestinal mucus and epithelial cell layer, leading to low absorption and bioavailability, and safety concerns owing to tight junction openings. Here we report a zwitterionic micelle platform featuring a virus-mimetic zwitterionic surface, a betaine side chain and an ultralow critical micelle concentration, enabling drug penetration through the mucus and efficient transporter-mediated epithelial absorption without the need for tight junction opening. This micelle platform was used to fabricate a prototype oral insulin formulation by encapsulating a freeze-dried powder of zwitterionic micelle insulin into an enteric-coated capsule. The biocompatible oral insulin formulation shows a high oral bioavailability of >40%, offers the possibility to fine tune insulin acting profiles and provides long-term safety, enabling the oral delivery of protein drugs.
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Affiliation(s)
- Xiangfei Han
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI, USA
| | - Yang Lu
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI, USA
| | - Jinbing Xie
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI, USA
| | - Ershuai Zhang
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI, USA
| | - Hui Zhu
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI, USA
| | - Hong Du
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI, USA
| | - Ke Wang
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI, USA
| | - Boyi Song
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI, USA
| | - Chengbiao Yang
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI, USA
| | - Yuanjie Shi
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI, USA
| | - Zhiqiang Cao
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI, USA.
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156
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Seok JW, Kim D, Yoon BK, Lee Y, Kim HJ, Hwang N, Fang S, Kim HJ, Kim JW. Dexras1 plays a pivotal role in maintaining the equilibrium between adipogenesis and osteogenesis. Metabolism 2020; 108:154250. [PMID: 32335074 DOI: 10.1016/j.metabol.2020.154250] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 04/14/2020] [Accepted: 04/21/2020] [Indexed: 12/18/2022]
Abstract
BACKGROUND Chronic steroid treatment causes an increase in visceral adiposity and osteoporosis. It is believed that steroids may alter a balance between differentiation of mesenchymal stem cells (MSCs) into either adipocytes or osteoblasts; however, the detailed molecular mechanisms are unclear. We previously identified Dexras1 as a critical factor that potentiates adipogenesis in response to glucocorticoids. Thus, in this study, we investigated the role of Dexras1 in maintaining the balance between chronic steroid treatment-associated adipogenesis and osteoporosis. MATERIAL AND METHODS We treated wild type (WT) and Dexras1 knockout (KO) mice with dexamethasone for five weeks followed by 60% HFD for additional two weeks with dexamethasone. The changes of glucocorticoid-induced body weight gain and osteoporosis were analyzed. Bone marrow derived stromal cells (BMSCs) and mouse embryonic fibroblasts (MEFs) extracted from WT and Dexras1 KO mice, as well as MC3T3-E1 pre-osteoblasts and osteoclasts differentiated from RAW264.7 were analyzed to further define the role of Dexras1 in osteoblasts and osteoclasts. RESULTS Dual-energy X-ray absorptiometry and micro-computed tomography analyses in murine femurs revealed that Dexras1 deficiency was associated with increased osteogenesis, concurrent with reduced adipogenesis. Furthermore, Dexras1 deficiency promoted osteogenesis of BMSCs and MEFs in vitro, suggesting that Dexras1 deficiency prevents steroid-induced osteoporosis. We also observed that Dexras1 downregulated SMAD signaling pathways, which reduced the osteogenic differentiation capacity of pre-osteoblast MC3T3-E1 cells into mature osteoblasts. CONCLUSION We propose that Dexras1 is critical for maintaining the equilibrium between adipogenesis and osteogenesis upon steroid treatment.
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Affiliation(s)
- Jo Woon Seok
- Department of Biochemistry and Molecular Biology, Chronic Intractable Disease Systems Medicine Research Center, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul 03722, Republic of Korea
| | - Daeun Kim
- Department of Biochemistry and Molecular Biology, Chronic Intractable Disease Systems Medicine Research Center, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul 03722, Republic of Korea
| | - Bo Kyung Yoon
- Department of Biochemistry and Molecular Biology, Chronic Intractable Disease Systems Medicine Research Center, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul 03722, Republic of Korea
| | - Yoseob Lee
- Department of Biochemistry and Molecular Biology, Chronic Intractable Disease Systems Medicine Research Center, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul 03722, Republic of Korea
| | - Hyeon Ju Kim
- Department of Biochemistry and Molecular Biology, Chronic Intractable Disease Systems Medicine Research Center, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul 03722, Republic of Korea
| | - Nahee Hwang
- Department of Biochemistry and Molecular Biology, Chronic Intractable Disease Systems Medicine Research Center, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul 03722, Republic of Korea
| | - Sungsoon Fang
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul 03722, Republic of Korea; Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Hyo Jung Kim
- Department of Biochemistry and Molecular Biology, Chronic Intractable Disease Systems Medicine Research Center, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; Department of Orthopedic Surgery, Konkuk University School of Medicine, Seoul 05030, Republic of Korea.
| | - Jae-Woo Kim
- Department of Biochemistry and Molecular Biology, Chronic Intractable Disease Systems Medicine Research Center, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul 03722, Republic of Korea.
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157
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Forrester SJ, Preston KJ, Cooper HA, Boyer MJ, Escoto KM, Poltronetti AJ, Elliott KJ, Kuroda R, Miyao M, Sesaki H, Akiyama T, Kimura Y, Rizzo V, Scalia R, Eguchi S. Mitochondrial Fission Mediates Endothelial Inflammation. Hypertension 2020; 76:267-276. [PMID: 32389075 PMCID: PMC7289685 DOI: 10.1161/hypertensionaha.120.14686] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 03/31/2020] [Indexed: 01/04/2023]
Abstract
Endothelial inflammation and mitochondrial dysfunction have been implicated in cardiovascular diseases, yet, a unifying mechanism tying them together remains limited. Mitochondrial dysfunction is frequently associated with mitochondrial fission/fragmentation mediated by the GTPase Drp1 (dynamin-related protein 1). Nuclear factor (NF)-κB, a master regulator of inflammation, is implicated in endothelial dysfunction and resultant complications. Here, we explore a causal relationship between mitochondrial fission and NF-κB activation in endothelial inflammatory responses. In cultured endothelial cells, TNF-α (tumor necrosis factor-α) or lipopolysaccharide induces mitochondrial fragmentation. Inhibition of Drp1 activity or expression suppresses mitochondrial fission, NF-κB activation, vascular cell adhesion molecule-1 induction, and leukocyte adhesion induced by these proinflammatory factors. Moreover, attenuations of inflammatory leukocyte adhesion were observed in Drp1 heterodeficient mice as well as endothelial Drp1 silenced mice. Intriguingly, inhibition of the canonical NF-κB signaling suppresses endothelial mitochondrial fission. Mechanistically, NF-κB p65/RelA seems to mediate inflammatory mitochondrial fission in endothelial cells. In addition, the classical anti-inflammatory drug, salicylate, seems to maintain mitochondrial fission/fusion balance against TNF-α via inhibition of NF-κB. In conclusion, our results suggest a previously unknown mechanism whereby the canonical NF-κB cascade and a mitochondrial fission pathway interdependently regulate endothelial inflammation.
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Affiliation(s)
- Steven J. Forrester
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, U.S.A
| | - Kyle J. Preston
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, U.S.A
| | - Hannah A. Cooper
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, U.S.A
| | - Michael J. Boyer
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, U.S.A
| | - Kathleen M. Escoto
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, U.S.A
| | - Anthony J. Poltronetti
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, U.S.A
| | - Katherine J. Elliott
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, U.S.A
| | - Ryohei Kuroda
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, U.S.A
| | - Masashi Miyao
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, U.S.A
- Department of Forensic Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Hiromi Sesaki
- Department of Cell Biology, Johns Hopkins School of Medicine, Baltimore, MD, U.S.A
| | - Tomoko Akiyama
- Advanced Medical Research Center, Yokohama City University, Yokohama, Japan
| | - Yayoi Kimura
- Advanced Medical Research Center, Yokohama City University, Yokohama, Japan
| | - Victor Rizzo
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, U.S.A
| | - Rosario Scalia
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, 3500 N. Broad Street, Philadelphia, PA19140
| | - Satoru Eguchi
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, U.S.A
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158
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Ahmed S, Khan RA, Jamil S, Fatima S, Akhtar Z. In-vitro bioassays of aqueous and ethanol extracts of Aseel dates. Pak J Pharm Sci 2020; 33:1623-1629. [PMID: 33583796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Aseel is amongst the most vital date variety of Pakistan. Beside its nutritional value, it also got remedial uses therefore for the first time different in-vitro bioassays were performed to assess its medicinal value. Aqueous (DFAE) and ethanol (DFEE) extracts of fresh Aseel dates were used for the purpose. Microplate alamar blue assay was done for antibacterial activity, Brine shrimp lethality test for cytotoxicity and MTT assays with different cancer cell lines were used for anti-cancer activity. Antioxidant and anti-inflammatory activity were also evaluated by free radical scavenging bioassay and chemiluminescence technique. Alamar blue assay of both extracts exhibited weak antibacterial activity against E.coli, S, flexenari and S. aureus. Brine shrimp lethality revealed absence of cytotoxicity at 1000μ/mL concentration. DFEE 50 μ/mL was effective against MCF-7,MDA-MB-231, PC3, 3T3 and Hela cancer cell lines showing 17.59%, 20.90%, 37.60%, 22.35% and 36.70% inhibition whereas DFAE exhibits 20.46%, 30.86%, 15.21%, 29.70% and 16.40 % inhibition respectively. Similarly both extracts also showed varying degree of anti-oxidant and anti-inflammatory activity against standard drug. The results are suggestive of weak bioactivity of Aseel date extracts might because of reduced potency however further studies are required for better understanding of observed results and separation of active ingredients from Aseel dates.
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Affiliation(s)
- Shadab Ahmed
- Department of Pharmacology, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi, Pakistan
| | - Rafeeq Alam Khan
- Department of Pharmacology, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi, Pakistan
| | - Subia Jamil
- Jinnah Women University, Faculty of Pharmacy, Karachi, Pakistan
| | - Sakina Fatima
- Jinnah Women University, Faculty of Pharmacy, Karachi, Pakistan
| | - Zeeshan Akhtar
- Department of Applied Chemistry, University of Karachi, Karachi, Pakistan
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Huang T, Kumari S, Herold H, Bargel H, Aigner TB, Heath DE, O’Brien-Simpson NM, O’Connor AJ, Scheibel T. Enhanced Antibacterial Activity of Se Nanoparticles Upon Coating with Recombinant Spider Silk Protein eADF4(κ16). Int J Nanomedicine 2020; 15:4275-4288. [PMID: 32606677 PMCID: PMC7306472 DOI: 10.2147/ijn.s255833] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 05/14/2020] [Indexed: 12/16/2022] Open
Abstract
PURPOSE Selenium nanoparticles (Se NPs) are promising antibacterial agents to tackle the growing problem of antimicrobial resistance. The aim of this study was to fabricate Se NPs with a net positive charge to enhance their antibacterial efficacy. METHODS Se NPs were coated with a positively charged protein - recombinant spider silk protein eADF4(κ16) - to give them a net positive surface charge. Their cytotoxicity and antibacterial activity were investigated, with negatively charged polyvinyl alcohol coated Se NPs as a control. Besides, these eADF4(κ16)-coated Se NPs were immobilized on the spider silk films, and the antibacterial activity of these films was investigated. RESULTS Compared to the negatively charged polyvinyl alcohol coated Se NPs, the positively charged eADF4(κ16)-coated Se NPs demonstrated a much higher bactericidal efficacy against the Gram-negative bacteria E. coli, with a minimum bactericidal concentration (MBC) approximately 50 times lower than that of negatively charged Se NPs. Cytotoxicity testing showed that the eADF4(κ16)-coated Se NPs are safe to both Balb/3T3 mouse embryo fibroblasts and HaCaT human skin keratinocytes up to 31 µg/mL, which is much higher than the MBC of these particles against E. coli (8 ± 1 µg/mL). In addition, antibacterial coatings were created by immobilising the eADF4(κ16)-coated Se NPs on positively charged spider silk films and these were shown to retain good bactericidal efficacy and overcome the issue of low particle stability in culture broth. It was found that these Se NPs needed to be released from the film surface in order to exert their antibacterial effects and this release can be regulated by the surface charge of the film, such as the change of the spider silk protein used. CONCLUSION Overall, eADF4(κ16)-coated Se NPs are promising new antibacterial agents against life-threatening bacteria.
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Affiliation(s)
- Tao Huang
- Department of Biomedical Engineering, Melbourne School of Engineering, University of Melbourne, Parkville, VIC3010, Australia
- Department for Biomaterials, Faculty of Engineering Science, University of Bayreuth, Prof. Rüdiger Bormann Str. 1, Bayreuth95447, Germany
| | - Sushma Kumari
- Department for Biomaterials, Faculty of Engineering Science, University of Bayreuth, Prof. Rüdiger Bormann Str. 1, Bayreuth95447, Germany
| | - Heike Herold
- Department for Biomaterials, Faculty of Engineering Science, University of Bayreuth, Prof. Rüdiger Bormann Str. 1, Bayreuth95447, Germany
| | - Hendrik Bargel
- Department for Biomaterials, Faculty of Engineering Science, University of Bayreuth, Prof. Rüdiger Bormann Str. 1, Bayreuth95447, Germany
| | - Tamara B Aigner
- Department for Biomaterials, Faculty of Engineering Science, University of Bayreuth, Prof. Rüdiger Bormann Str. 1, Bayreuth95447, Germany
| | - Daniel E Heath
- Department of Biomedical Engineering, Melbourne School of Engineering, University of Melbourne, Parkville, VIC3010, Australia
| | - Neil M O’Brien-Simpson
- Melbourne Dental School and the Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, Parkville, VIC3010, Australia
| | - Andrea J O’Connor
- Department of Biomedical Engineering, Melbourne School of Engineering, University of Melbourne, Parkville, VIC3010, Australia
| | - Thomas Scheibel
- Department for Biomaterials, Faculty of Engineering Science, University of Bayreuth, Prof. Rüdiger Bormann Str. 1, Bayreuth95447, Germany
- Bavarian Polymer Institute (BPI), Bayreuth Center for Material Science and Engineering (BayMAT), Bayreuth Center for Colloids and Interfaces (BZKG), Bayreuth Center for Molecular Biosciences (BZMB), University of Bayreuth, Bayreuth95447, Germany
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Antoku S, Wu W, Joseph LC, Morrow JP, Worman HJ, Gundersen GG. ERK1/2 Phosphorylation of FHOD Connects Signaling and Nuclear Positioning Alternations in Cardiac Laminopathy. Dev Cell 2020; 51:602-616.e12. [PMID: 31794718 DOI: 10.1016/j.devcel.2019.10.023] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 08/06/2019] [Accepted: 10/24/2019] [Indexed: 12/13/2022]
Abstract
Mutations in the lamin A/C gene (LMNA) cause cardiomyopathy and also disrupt nuclear positioning in fibroblasts. LMNA mutations causing cardiomyopathy elevate ERK1/2 activity in the heart, and inhibition of the ERK1/2 kinase activity ameliorates pathology, but the downstream effectors remain largely unknown. We now show that cardiomyocytes from mice with an Lmna mutation and elevated cardiac ERK1/2 activity have altered nuclear positioning. In fibroblasts, ERK1/2 activation negatively regulated nuclear movement by phosphorylating S498 of FHOD1. Expression of an unphosphorylatable FHOD1 variant rescued the nuclear movement defect in fibroblasts expressing a cardiomyopathy-causing lamin A mutant. In hearts of mice with LMNA mutation-induced cardiomyopathy, ERK1/2 mediated phosphorylation of FHOD3, an isoform highly expressed in cardiac tissue. Phosphorylation of FHOD1 and FHOD3 inhibited their actin bundling activity. These results show that phosphorylation of FHOD proteins by ERK1/2 is a critical switch for nuclear positioning and may play a role in the pathogenesis of cardiomyopathy caused by LMNA mutations.
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Affiliation(s)
- Susumu Antoku
- Department of Pathology and Cell Biology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA
| | - Wei Wu
- Department of Pathology and Cell Biology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA; Department of Medicine, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA
| | - Leroy C Joseph
- Department of Medicine, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA
| | - John P Morrow
- Department of Medicine, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA
| | - Howard J Worman
- Department of Pathology and Cell Biology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA; Department of Medicine, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA
| | - Gregg G Gundersen
- Department of Pathology and Cell Biology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA.
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Baba K, Sasaki K, Morita M, Tanaka T, Teranishi Y, Ogasawara T, Oie Y, Kusumi I, Inoie M, Hata KI, Quantock AJ, Kino-Oka M, Nishida K. Cell jamming, stratification and p63 expression in cultivated human corneal epithelial cell sheets. Sci Rep 2020; 10:9282. [PMID: 32518325 PMCID: PMC7283219 DOI: 10.1038/s41598-020-64394-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 02/24/2020] [Indexed: 02/08/2023] Open
Abstract
Corneal limbal epithelial stem cell transplantation using cultivated human corneal epithelial cell sheets has been used successfully to treat limbal stem cell deficiencies. Here we report an investigation into the quality of cultivated human corneal epithelial cell sheets using time-lapse imaging of the cell culture process every 20 minutes over 14 days to ascertain the level of cell jamming, a phenomenon in which cells become smaller, more rounded and less actively expansive. In parallel, we also assessed the expression of p63, an important corneal epithelial stem cell marker. The occurrence of cell jamming was variable and transient, but was invariably associated with a thickening and stratification of the cell sheet. p63 was present in all expanding cell sheets in the first 9 days of culture, but it's presence did not always correlate with stratification of the cell sheet. Nor did p63 expression necessarily persist in stratified cell sheets. An assessment of cell jamming, therefore, can shed significant light on the quality and regenerative potential of cultivated human corneal epithelial cell sheets.
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Affiliation(s)
- Koichi Baba
- Department of Ophthalmology, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Kei Sasaki
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
- Global Center for Medical Engineering and Informatics, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Mio Morita
- Department of Ophthalmology, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Tomoyo Tanaka
- Japan Tissue Engineering Co., Ltd, 6-209-1 Miyakitadori, Gamagori, Aichi, 443-0022, Japan
| | - Yosuke Teranishi
- Japan Tissue Engineering Co., Ltd, 6-209-1 Miyakitadori, Gamagori, Aichi, 443-0022, Japan
| | - Takahiro Ogasawara
- Japan Tissue Engineering Co., Ltd, 6-209-1 Miyakitadori, Gamagori, Aichi, 443-0022, Japan
| | - Yoshinori Oie
- Department of Ophthalmology, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Izumi Kusumi
- Department of Ophthalmology, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Masukazu Inoie
- Japan Tissue Engineering Co., Ltd, 6-209-1 Miyakitadori, Gamagori, Aichi, 443-0022, Japan
| | - Ken-Ichiro Hata
- Japan Tissue Engineering Co., Ltd, 6-209-1 Miyakitadori, Gamagori, Aichi, 443-0022, Japan
| | - Andrew J Quantock
- Structural Biophysics Group, School of Optometry and Vision Sciences, Cardiff University, Maindy Road, Cardiff, Wales, CF24 4HQ, United Kingdom
| | - Masahiro Kino-Oka
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Kohji Nishida
- Department of Ophthalmology, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
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Prasad R, Jain NK, Yadav AS, Chauhan DS, Devrukhkar J, Kumawat MK, Shinde S, Gorain M, Thakor AS, Kundu GC, Conde J, Srivastava R. Liposomal nanotheranostics for multimode targeted in vivo bioimaging and near-infrared light mediated cancer therapy. Commun Biol 2020; 3:284. [PMID: 32504032 PMCID: PMC7275035 DOI: 10.1038/s42003-020-1016-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 05/07/2020] [Indexed: 02/07/2023] Open
Abstract
Developing a nanotheranostic agent with better image resolution and high accumulation into solid tumor microenvironment is a challenging task. Herein, we established a light mediated phototriggered strategy for enhanced tumor accumulation of nanohybrids. A multifunctional liposome based nanotheranostics loaded with gold nanoparticles (AuNPs) and emissive graphene quantum dots (GQDs) were engineered named as NFGL. Further, doxorubicin hydrochloride was encapsulated in NFGL to exhibit phototriggered chemotherapy and functionalized with folic acid targeting ligands. Encapsulated agents showed imaging bimodality for in vivo tumor diagnosis due to their high contrast and emissive nature. Targeted NFGL nanohybrids demonstrated near infrared light (NIR, 750 nm) mediated tumor reduction because of generated heat and Reactive Oxygen Species (ROS). Moreover, NFGL nanohybrids exhibited remarkable ROS scavenging ability as compared to GQDs loaded liposomes validated by antitumor study. Hence, this approach and engineered system could open new direction for targeted imaging and cancer therapy.
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Affiliation(s)
- Rajendra Prasad
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra, 400076, India
| | - Nishant K Jain
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra, 400076, India
| | - Amit S Yadav
- Laboratory of Tumor Biology, Angiogenesis and Nanomedicine Research, National Center for Cell Science, Pune, 411008, India
- School of Biotechnology and Kalinga Institute of Medical Sciences (KIMS), KIIT Deemed to be University, Institute of Eminence, Bhubaneswar, 751024, India
| | - Deepak S Chauhan
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra, 400076, India
| | - Janhavi Devrukhkar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra, 400076, India
| | - Mukesh K Kumawat
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra, 400076, India
| | - Shweta Shinde
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra, 400076, India
| | - Mahadeo Gorain
- Laboratory of Tumor Biology, Angiogenesis and Nanomedicine Research, National Center for Cell Science, Pune, 411008, India
| | - Avnesh S Thakor
- Interventional Regenerative Medicine and Imaging Laboratory, Department of Radiology, Stanford University, Palo Alto, CA, 94304, USA
| | - Gopal C Kundu
- Laboratory of Tumor Biology, Angiogenesis and Nanomedicine Research, National Center for Cell Science, Pune, 411008, India
- School of Biotechnology and Kalinga Institute of Medical Sciences (KIMS), KIIT Deemed to be University, Institute of Eminence, Bhubaneswar, 751024, India
| | - João Conde
- Centre for Toxicogenomics and Human Health, Genetics, Oncology and Human Toxicology, NOVA Medical School, Faculdade de Ciências Médicas, Universidade Nova de Lisboa, 1169-056, Lisboa, Portugal.
| | - Rohit Srivastava
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra, 400076, India.
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163
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Bock N, Pham TLB, Nguyen TB, Nguyen TB, Tran HA, Tran PA. Polydopamine coating of uncrosslinked chitosan as an acellular scaffold for full thickness skin grafts. Carbohydr Polym 2020; 245:116524. [PMID: 32718628 DOI: 10.1016/j.carbpol.2020.116524] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 05/18/2020] [Accepted: 05/26/2020] [Indexed: 02/07/2023]
Abstract
There is an unmet need for skin grafting materials that are readily available for large area wounds, due to complex, lengthy and costly manufacturing processes that are not compatible with this type of wounds. Here we developed an acellular skin graft material based on surface coating of uncrosslinked porous (UCLP) chitosan. UCLP chitosan membranes had mechanical properties in ranges suitable for skin grafting. Polydopamine (PDA) coating improved hydrophilicity and resulted in a significant increase in attachment and metabolic activity of mammalian cells in vitro. PDA coating also decreased the attachment of pseudomonas aeruginosa - a common bacteria infecting skin wounds. Finally, the PDA-coated membranes were implanted in full thickness surgical wounds in a rodent model and resulted in complete would closure in 5 days. The current study suggests that PDA-coated UCLP chitosan membranes could be a simple and effective strategy for the development of grafting materials for large area wounds.
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Affiliation(s)
- Nathalie Bock
- School of Biomedical Sciences, Faculty of Health and Australian Prostate Cancer Research Centre (APCRC-Q), Institute of Health and Biomedical Innovation (IHBI), Queensland University of Technology (QUT), Brisbane, QLD, Australia; Translational Research Institute (TRI), QUT, Brisbane, QLD, Australia; Centre in Regenerative Medicine, IHBI, QUT, Kelvin Grove, QLD, Australia
| | | | | | | | - Hien A Tran
- Centre in Regenerative Medicine, IHBI, QUT, Kelvin Grove, QLD, Australia; Interface Science and Materials Engineering Group, School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty (SEF), IHBI, QUT, Brisbane, QLD, Australia
| | - Phong A Tran
- Centre in Regenerative Medicine, IHBI, QUT, Kelvin Grove, QLD, Australia; Interface Science and Materials Engineering Group, School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty (SEF), IHBI, QUT, Brisbane, QLD, Australia.
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164
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Elshafae SM, Dirksen WP, Alasonyalilar-Demirer A, Breitbach J, Yuan S, Kantake N, Supsavhad W, Hassan BB, Attia Z, Rosol TJ. Canine prostatic cancer cell line (LuMa) with osteoblastic bone metastasis. Prostate 2020; 80:698-714. [PMID: 32348616 PMCID: PMC7291846 DOI: 10.1002/pros.23983] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 03/28/2020] [Accepted: 04/02/2020] [Indexed: 12/24/2022]
Abstract
BACKGROUND Osteoblastic bone metastasis represents the most common complication in men with prostate cancer (PCa). During progression and bone metastasis, PCa cells acquire properties similar to bone cells in a phenomenon called osteomimicry, which promotes their ability to metastasize, proliferate, and survive in the bone microenvironment. The mechanism of osteomimicry resulting in osteoblastic bone metastasis is unclear. METHODS We developed and characterized a novel canine prostatic cancer cell line (LuMa) that will be useful to investigate the relationship between osteoblastic bone metastasis and osteomimicry in PCa. The LuMa cell line was established from a primary prostate carcinoma of a 13-year old mixed breed castrated male dog. Cell proliferation and gene expression of LuMa were measured and compared to three other canine prostatic cancer cell lines (Probasco, Ace-1, and Leo) in vitro. The effect of LuMa cells on calvaria and murine preosteoblastic (MC3T3-E1) cells was measured by quantitative reverse-transcription polymerase chain reaction and alkaline phosphatase assay. LuMa cells were transduced with luciferase for monitoring in vivo tumor growth and metastasis using different inoculation routes (subcutaneous, intratibial [IT], and intracardiac [IC]). Xenograft tumors and metastases were evaluated using radiography and histopathology. RESULTS After left ventricular injection, LuMa cells metastasized to bone, brain, and adrenal glands. IT injections induced tumors with intramedullary new bone formation. LuMa cells had the highest messenger RNA levels of osteomimicry genes (RUNX2, RANKL, and Osteopontin [OPN]), CD44, E-cadherin, and MYOF compared to Ace-1, Probasco, and Leo cells. LuMa cells induced growth in calvaria defects and modulated gene expression in MC3T3-E1 cells. CONCLUSIONS LuMa is a novel canine PCa cell line with osteomimicry and stemness properties. LuMa cells induced osteoblastic bone formation in vitro and in vivo. LuMa PCa cells will serve as an excellent model for studying the mechanisms of osteomimicry and osteoblastic bone and brain metastasis in prostate cancer.
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Affiliation(s)
- Said M. Elshafae
- Dept. of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH, USA
- Dept. of Pathology, Faculty of Veterinary medicine, Benha University, Benha, Egypt
- Dept. of Neuroscience and Pharmacology, Carver College of Medicine, University of Iowa, Iowa City, IA, USA
| | - Wessel P. Dirksen
- Dept. of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH, USA
- Dept. of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH, USA
| | - Aylin Alasonyalilar-Demirer
- Dept. of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH, USA
- Department of Pathology, Faculty of Veterinary Medicine, Bursa Uludag University, Turkey
| | - Justin Breitbach
- Dept. of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH, USA
| | - Shiyu Yuan
- Dept. of Biomedical Sciences, Heritage College of Osteopathic Medicine, Ohio University, Athens, OH, USA
| | - Noriko Kantake
- Dept. of Biomedical Sciences, Heritage College of Osteopathic Medicine, Ohio University, Athens, OH, USA
| | - Wachiraphan Supsavhad
- Dept. of Pathology, Faculty of Veterinary Medicine, Kasetsart University, Bangkok, Thailand
| | - Bardes B. Hassan
- Dept. of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH, USA
- Dept. of Pathology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Zayed Attia
- Dept. of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH, USA
- Dept. of Animal Medicine and Infectious Diseases, Faculty of Veterinary Medicine, Sadat City University, Sadat City, Egypt
| | - Thomas J. Rosol
- Dept. of Biomedical Sciences, Heritage College of Osteopathic Medicine, Ohio University, Athens, OH, USA
- Correspondence to: Dr. Thomas Rosol, Department of Biomedical Sciences, Heritage College of Osteopathic Medicine, Ohio University, 225 Irvine Hall, Athens, OH 45701, USA. , Phone: 740.593.2405
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165
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Yang Q, Wu B, Eles JR, Vazquez AL, Kozai TDY, Cui XT. Zwitterionic Polymer Coating Suppresses Microglial Encapsulation to Neural Implants In Vitro and In Vivo. Adv Biosyst 2020; 4:e1900287. [PMID: 32363792 PMCID: PMC7686959 DOI: 10.1002/adbi.201900287] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 03/23/2020] [Accepted: 03/30/2020] [Indexed: 01/08/2023]
Abstract
For brain computer interfaces (BCI), the immune response to implanted electrodes is a major biological cause of device failure. Bioactive coatings such as neural adhesion molecule L1 have been shown to improve the biocompatibility, but are difficult to handle or produce in batches. Here, a synthetic zwitterionic polymer coating, poly(sulfobetaine methacrylate) (PSBMA) is developed for neural implants with the goal of reducing the inflammatory host response. In tests in vitro, the zwitterionic coating inhibits protein adsorption and the attachment of fibroblasts and microglia, and remains stable for at least 4 weeks. In vivo two-photon microscopy on CX3CR1-GFP mice shows that the zwitterionic coating significantly suppresses the microglial encapsulation of neural microelectrodes over a 6 h observation period. Furthermore, the lower microglial encapsulation on zwitterionic polymer-coated microelectrodes is revealed to originate from a reduction in the size but not the number of microglial end feet. This work provides a facile method for coating neural implants with zwitterionic polymers and illustrates the initial interaction between microglia and coated surface at high temporal and spatial resolution.
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Affiliation(s)
- Qianru Yang
- Biomedical Science Tower 3, University of Pittsburgh, 3501 Fifth Ave, Pittsburgh, PA, 15232, USA
| | - Bingchen Wu
- Biomedical Science Tower 3, University of Pittsburgh, 3501 Fifth Ave, Pittsburgh, PA, 15232, USA
| | - James R Eles
- Biomedical Science Tower 3, University of Pittsburgh, 3501 Fifth Ave, Pittsburgh, PA, 15232, USA
| | - Alberto L Vazquez
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, 3025 East Carson Street, Pittsburgh, PA, 15219, USA
| | - Takashi D Y Kozai
- Center for Biotechnology and Bioengineering, University of Pittsburgh, 300 Technology Dr, Pittsburgh, PA, 15213, USA
| | - X Tracy Cui
- Biomedical Science Tower 3, University of Pittsburgh, 3501 Fifth Ave, Pittsburgh, PA, 15232, USA
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Xie X, Wang W, Cheng J, Liang H, Lin Z, Zhang T, Lu Y, Li Q. Bilayer pifithrin-α loaded extracellular matrix/PLGA scaffolds for enhanced vascularized bone formation. Colloids Surf B Biointerfaces 2020; 190:110903. [PMID: 32120128 DOI: 10.1016/j.colsurfb.2020.110903] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 02/03/2020] [Accepted: 02/24/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Xiaobo Xie
- Department of Orthopedics, Zhujiang Hospital, Southern Medical University, 253 Gongye Road, Guangzhou, Guangdong, 510282, PR China
| | - Wanshun Wang
- Guangdong Key Lab of Orthopedic Technology and Implant Materials, Key Laboratory of Trauma & Tissue Repair of Tropical Area of PLA, Hospital of Orthopedics, General Hospital of Southern Theater Command of PLA, 111 Liuhua Road, Guangzhou, Guangdong, 510010, PR China
| | - Jing Cheng
- Department of Orthopedics, Zhujiang Hospital, Southern Medical University, 253 Gongye Road, Guangzhou, Guangdong, 510282, PR China
| | - Haifeng Liang
- Department of Orthopedics, Zhujiang Hospital, Southern Medical University, 253 Gongye Road, Guangzhou, Guangdong, 510282, PR China
| | - Zefeng Lin
- Guangdong Key Lab of Orthopedic Technology and Implant Materials, Key Laboratory of Trauma & Tissue Repair of Tropical Area of PLA, Hospital of Orthopedics, General Hospital of Southern Theater Command of PLA, 111 Liuhua Road, Guangzhou, Guangdong, 510010, PR China
| | - Tao Zhang
- Guangdong Key Lab of Orthopedic Technology and Implant Materials, Key Laboratory of Trauma & Tissue Repair of Tropical Area of PLA, Hospital of Orthopedics, General Hospital of Southern Theater Command of PLA, 111 Liuhua Road, Guangzhou, Guangdong, 510010, PR China
| | - Yao Lu
- Department of Orthopedics, Zhujiang Hospital, Southern Medical University, 253 Gongye Road, Guangzhou, Guangdong, 510282, PR China; Guangdong Key Lab of Orthopedic Technology and Implant Materials, Key Laboratory of Trauma & Tissue Repair of Tropical Area of PLA, Hospital of Orthopedics, General Hospital of Southern Theater Command of PLA, 111 Liuhua Road, Guangzhou, Guangdong, 510010, PR China; Clinical Research Centre, Zhujiang Hospital, Southern Medical University, 253 Gongye Road, Guangzhou, Guangdong, 510282, PR China.
| | - Qi Li
- Department of Orthopedics, Zhujiang Hospital, Southern Medical University, 253 Gongye Road, Guangzhou, Guangdong, 510282, PR China.
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Campitelli M, Desiderio A, Cacace G, Nigro C, Prevenzano I, Leone A, de Simone S, Campiglia P, Formisano P, Raciti GA, Beguinot F, Miele C. Citrus aurantium L. Dry Extracts Ameliorate Adipocyte Differentiation of 3T3-L1 Cells Exposed to TNFα by Down-Regulating miR-155 Expression. Nutrients 2020; 12:nu12061587. [PMID: 32481686 PMCID: PMC7352926 DOI: 10.3390/nu12061587] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/22/2020] [Accepted: 05/26/2020] [Indexed: 01/14/2023] Open
Abstract
Citrus aurantium L. dry extracts (CAde) improve adipogenesis in vitro. These effects are dependent from an early modulation of CCAAT/enhancer-binding protein beta (C/Ebpβ) expression and cyclic Adenosine Monophosphate (cAMP) response element-binding protein (CREB) activation. C/Ebpβ and Creb are also targets of miR-155. This study investigated whether CAde regulates miR-155 expression in the early stages of adipogenesis and whether it ameliorates adipocyte differentiation of cells exposed to tumor necrosis factor-alpha (TNFα). Adipogenic stimuli (AS) were performed in 3T3-L1 pre-adipocytes treated with CAde, TNFα, or both. Gene and miRNA expression were determined by quantitative real-time PCR. Adipogenesis was evaluated by Oil-Red O staining. CAde treatment enhanced AS effects during the early adipogenesis phases by further down-regulating miR-155 expression and increasing both C/Ebpβ and Creb mRNA and protein levels. At variance, TNFα inhibited 3T3-L1 adipogenesis and abolished AS effects on miR-155, C/Ebpβ, and Creb expression. However, in cells exposed to TNFα, CAde improved adipocyte differentiation and restored the AS effects on miRNA and gene expression at early time points. In conclusion, this study identified miR-155 down-regulation as part of the mechanism through which CAde enhances adipogenesis of pre-adipocytes in vitro. Furthermore, it provides evidence of CAde efficacy against TNFα negative effects on adipogenesis.
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Affiliation(s)
- Michele Campitelli
- URT Genomics of Diabetes, Institute of Experimental Endocrinology and Oncology, National Research Council, 80131 Naples, Italy; (M.C.); (A.D.); (G.C.); (C.N.); (I.P.); (A.L.); (S.d.S.); (P.F.); (F.B.)
- Department of Translational Medicine, Federico II University of Naples, 80131 Naples, Italy
| | - Antonella Desiderio
- URT Genomics of Diabetes, Institute of Experimental Endocrinology and Oncology, National Research Council, 80131 Naples, Italy; (M.C.); (A.D.); (G.C.); (C.N.); (I.P.); (A.L.); (S.d.S.); (P.F.); (F.B.)
- Department of Translational Medicine, Federico II University of Naples, 80131 Naples, Italy
| | - Giuseppe Cacace
- URT Genomics of Diabetes, Institute of Experimental Endocrinology and Oncology, National Research Council, 80131 Naples, Italy; (M.C.); (A.D.); (G.C.); (C.N.); (I.P.); (A.L.); (S.d.S.); (P.F.); (F.B.)
- Department of Translational Medicine, Federico II University of Naples, 80131 Naples, Italy
| | - Cecilia Nigro
- URT Genomics of Diabetes, Institute of Experimental Endocrinology and Oncology, National Research Council, 80131 Naples, Italy; (M.C.); (A.D.); (G.C.); (C.N.); (I.P.); (A.L.); (S.d.S.); (P.F.); (F.B.)
- Department of Translational Medicine, Federico II University of Naples, 80131 Naples, Italy
| | - Immacolata Prevenzano
- URT Genomics of Diabetes, Institute of Experimental Endocrinology and Oncology, National Research Council, 80131 Naples, Italy; (M.C.); (A.D.); (G.C.); (C.N.); (I.P.); (A.L.); (S.d.S.); (P.F.); (F.B.)
- Department of Translational Medicine, Federico II University of Naples, 80131 Naples, Italy
| | - Alessia Leone
- URT Genomics of Diabetes, Institute of Experimental Endocrinology and Oncology, National Research Council, 80131 Naples, Italy; (M.C.); (A.D.); (G.C.); (C.N.); (I.P.); (A.L.); (S.d.S.); (P.F.); (F.B.)
- Department of Translational Medicine, Federico II University of Naples, 80131 Naples, Italy
| | - Sonia de Simone
- URT Genomics of Diabetes, Institute of Experimental Endocrinology and Oncology, National Research Council, 80131 Naples, Italy; (M.C.); (A.D.); (G.C.); (C.N.); (I.P.); (A.L.); (S.d.S.); (P.F.); (F.B.)
- Department of Translational Medicine, Federico II University of Naples, 80131 Naples, Italy
| | - Pietro Campiglia
- Department of Pharmacy, University of Salerno, 84084 Fisciano, Italy;
- European Biomedical Research Institute of Salerno, 84125 Salerno, Italy
| | - Pietro Formisano
- URT Genomics of Diabetes, Institute of Experimental Endocrinology and Oncology, National Research Council, 80131 Naples, Italy; (M.C.); (A.D.); (G.C.); (C.N.); (I.P.); (A.L.); (S.d.S.); (P.F.); (F.B.)
- Department of Translational Medicine, Federico II University of Naples, 80131 Naples, Italy
| | - Gregory A. Raciti
- URT Genomics of Diabetes, Institute of Experimental Endocrinology and Oncology, National Research Council, 80131 Naples, Italy; (M.C.); (A.D.); (G.C.); (C.N.); (I.P.); (A.L.); (S.d.S.); (P.F.); (F.B.)
- Department of Translational Medicine, Federico II University of Naples, 80131 Naples, Italy
- Correspondence: (G.A.R.); (C.M.); Tel.: +39-081-746-3045 (G.A.R.); +39-081-746-3248 (C.M.)
| | - Francesco Beguinot
- URT Genomics of Diabetes, Institute of Experimental Endocrinology and Oncology, National Research Council, 80131 Naples, Italy; (M.C.); (A.D.); (G.C.); (C.N.); (I.P.); (A.L.); (S.d.S.); (P.F.); (F.B.)
- Department of Translational Medicine, Federico II University of Naples, 80131 Naples, Italy
| | - Claudia Miele
- URT Genomics of Diabetes, Institute of Experimental Endocrinology and Oncology, National Research Council, 80131 Naples, Italy; (M.C.); (A.D.); (G.C.); (C.N.); (I.P.); (A.L.); (S.d.S.); (P.F.); (F.B.)
- Department of Translational Medicine, Federico II University of Naples, 80131 Naples, Italy
- Correspondence: (G.A.R.); (C.M.); Tel.: +39-081-746-3045 (G.A.R.); +39-081-746-3248 (C.M.)
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Garcia-Valtanen P, Guzman-Genuino RM, Hayball JD, Diener KR. Polyinosinic: Polycytidylic Acid and Murine Cytomegalovirus Modulate Expression of Murine IL-10 and IL-21 in White Adipose Tissue. Viruses 2020; 12:v12050569. [PMID: 32455939 PMCID: PMC7290755 DOI: 10.3390/v12050569] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Accepted: 05/20/2020] [Indexed: 12/15/2022] Open
Abstract
White adipose tissue (WAT) produces interleukin-10 and other immune suppressors in response to pathogen-associated molecular patterns (PAMPs). It also homes a subset of B-cells specialized in the production of IL-10, referred to as regulatory B-cells. We investigated whether viral stimuli, polyinosinic: polycytidylic acid (poly(I:C)) or whole replicative murine cytomegalovirus (MCMV), could stimulate the expression of IL-10 in murine WAT using in vivo and ex vivo approaches. Our results showed that in vivo responses to systemic administration of poly(I:C) resulted in high levels of endogenously-produced IL-10 and IL-21 in WAT. In ex vivo WAT explants, a subset of B-cells increased their endogenous IL-10 expression in response to poly(I:C). Finally, MCMV replication in WAT explants resulted in decreased IL-10 levels, opposite to the effect seen with poly(I:C). Moreover, downregulation of IL-10 correlated with relatively lower number of Bregs. To our knowledge, this is the first report of IL-10 expression by WAT and WAT-associated B-cells in response to viral stimuli.
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Affiliation(s)
- Pablo Garcia-Valtanen
- Experimental Therapeutics Laboratory, UniSA Cancer Research Institute, Clinical and Health Sciences, University of South Australia, Adelaide 5000, Australia; (R.M.G.-G.); (J.D.H.)
- Correspondence: (P.G.-V.); (K.R.D.); Tel.: +61-(08)-8302-2374 (P.G.-V.); +61-(08)-8302-7393 (K.R.D.)
| | - Ruth Marian Guzman-Genuino
- Experimental Therapeutics Laboratory, UniSA Cancer Research Institute, Clinical and Health Sciences, University of South Australia, Adelaide 5000, Australia; (R.M.G.-G.); (J.D.H.)
| | - John D. Hayball
- Experimental Therapeutics Laboratory, UniSA Cancer Research Institute, Clinical and Health Sciences, University of South Australia, Adelaide 5000, Australia; (R.M.G.-G.); (J.D.H.)
- Robinson Research Institute and Adelaide Medical School, The University of Adelaide, Adelaide 5005, Australia
| | - Kerrilyn R. Diener
- Experimental Therapeutics Laboratory, UniSA Cancer Research Institute, Clinical and Health Sciences, University of South Australia, Adelaide 5000, Australia; (R.M.G.-G.); (J.D.H.)
- Robinson Research Institute and Adelaide Medical School, The University of Adelaide, Adelaide 5005, Australia
- Correspondence: (P.G.-V.); (K.R.D.); Tel.: +61-(08)-8302-2374 (P.G.-V.); +61-(08)-8302-7393 (K.R.D.)
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169
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Zhou L, Qiu M, Yang L, Yang L, Zhang Y, Mu S, Song H. MicroRNA-1-3p enhances osteoblast differentiation of MC3T3-E1 cells by interacting with hypoxia-inducible factor 1 α inhibitor (HIF1AN). Mech Dev 2020; 162:103613. [PMID: 32387587 DOI: 10.1016/j.mod.2020.103613] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 04/30/2020] [Accepted: 05/01/2020] [Indexed: 01/19/2023]
Abstract
Studies have proved that miRNAs participate in the regulation of osteoblast differentiation (OD), and abnormal expression of miRNAs is related with various states of OD. In this study, we investigated the role of miRNA-1-3p in OD using MC3T3-E1 cells. BMP2 is used to induce OD of MC3T3-E1 cells. MiRNA-1-3p mimics or miRNA-1-3p inhibitor was transfected to MC3T3-E1 cells with BMP2. The expression levels of miRNA-1-3p were determined by qRT-PCR. The expression of Runx2, OSX, OPN, and OCN was detected by Western blotting. ALP assay was performed to measure alkaline phosphatase activity. Calcium nodules were evaluated by alizarin red staining. Over-expression of hypoxia-inducible factor 1-alpha inhibitor (HIF1AN) was performed and miRNA-1-3p rescue experiments were carried out. Over-expression of miRNA-1-3p promoted osteogenic differentiations and calcifications, as demonstrated by increased ALP, calcification and osteogenic markers. Knock-down of miRNA-1-3p generated the opposite results. HIF1AN was identified to be directly targeted by miRNA-1-3p. Over-expression of HIF1AN suppressed OD and calcifications, and miRNA-1-3p reversed the effect. Our results demonstrated that miRNA-1-3p could enhance OD of MC3T3-E1 cells through interacting with HIF1AN, which might be employed as therapeutic applications for bone formation and regeneration.
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Affiliation(s)
- Long Zhou
- Department of Orthopedics, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning Province, China
| | - Min Qiu
- Department of Orthopedics, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning Province, China
| | - Lei Yang
- Department of Orthopedics, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning Province, China
| | - Liyu Yang
- Department of Orthopedics, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning Province, China
| | - Yiqi Zhang
- Department of Orthopedics, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning Province, China
| | - Shuai Mu
- Department of Orthopedics, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning Province, China
| | - Hanyi Song
- Department of Gastroenterology, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning Province, China.
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170
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Ni Y, Zhang H, Li Z, Li Z. Connective tissue growth factor (CCN2) inhibits TNF-α-induced apoptosis by enhancing autophagy through the Akt and Erk pathways in osteoblasts. Pharmazie 2020; 75:213-217. [PMID: 32393432 DOI: 10.1691/ph.2020.0336] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Connective tissue growth factor (CTGF/CCN2) is a secreted protein modulating various biological processes, such as proliferation, differentiation, and survival. Tumor necrosis factor-α (TNF-α), known as a proinflammatory factor, negatively regulates osteoblast differentiation and survival. However, the potential mechanisms of CCN2 in TNF-α-induced osteoblast apoptosis are not fully understood. In the present study, we found that CCN2 was expressed in osteoblasts and downregulated after treatment with TNF-α. Overexpression of CCN2 attenuated TNF-α-induced osteoblast apoptosis. Autophagy, a pro-survival biological behavior, was triggered by TNF-α stimulation, and CCN2 overexpression enhanced this process. Inhibition of autophagy by chloroquine (CQ) affected the anti-apoptotic effect of CCN2. Moreover, the phosphorylation levels of Akt and Erk were upregulated in CCN2-over expressed cells, and LY294002 and U1026 (which inhibited the Akt and Erk signaling pathways, respectively) reversed the effect of CCN2 on autophagy and cell survival enhancement. Our data suggest that CCN2 might be a positive regulator of osteoblast survival in TNF-α stimulation by enhancing autophagy through the Akt and Erk signaling pathways.
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Affiliation(s)
- Yifeng Ni
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, China
| | - Hao Zhang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, China
| | - Zhi Li
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, China;,
| | - Zubing Li
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, China;,
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171
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Mole S, Faizo AAA, Hernandez-Lopez H, Griffiths M, Stevenson A, Roberts S, Graham SV. Human papillomavirus type 16 infection activates the host serine arginine protein kinase 1 (SRPK1) - splicing factor axis. J Gen Virol 2020; 101:523-532. [PMID: 32182205 PMCID: PMC7414453 DOI: 10.1099/jgv.0.001402] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 02/07/2020] [Indexed: 12/11/2022] Open
Abstract
The infectious life cycle of human papillomaviruses (HPVs) is tightly linked to keratinocyte differentiation. Evidence suggests a sophisticated interplay between host gene regulation and virus replication. Alternative splicing is an essential process for host and viral gene expression, and is generally upregulated by serine arginine-rich splicing factors (SRSFs). SRSF activity can be positively or negatively controlled by cycles of phosphorylation/dephosphorylation. Here we show that HPV16 infection leads to accumulation of the paradigm SRSF protein, SRSF1, in the cytoplasm in a keratinocyte differentiation-specific manner. Moreover, HPV16 infection leads to increased levels of cytoplasmic and nuclear phosphorylated SRSF1. SR protein kinase 1 (SRPK1) phosphorylates SRSF1. Similar to HPV upregulation of SRSF1, we demonstrate HPV upregulation of SRPK1 via the viral E2 protein. SRPK1 depletion or drug inhibition of SRPK1 kinase activity resulted in reduced levels of SRSF1, suggesting that phosphorylation stabilizes the protein in differentiated HPV-infected keratinocytes. Together, these data indicate HPV infection stimulates the SRPK1-SRSF axis in keratinocytes.
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Affiliation(s)
- Sarah Mole
- MRC – University of Glasgow Centre for Virus Research, Institute of Infection, Immunity and Inflammation, College of Medical Veterinary and Life Sciences, University of Glasgow, Garscube Estate, Glasgow G61 1QH, UK
- Present address: GlaxoSmithKline, Stevenage, UK
| | - Arwa Ali A. Faizo
- MRC – University of Glasgow Centre for Virus Research, Institute of Infection, Immunity and Inflammation, College of Medical Veterinary and Life Sciences, University of Glasgow, Garscube Estate, Glasgow G61 1QH, UK
- Present address: Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Hegel Hernandez-Lopez
- MRC – University of Glasgow Centre for Virus Research, Institute of Infection, Immunity and Inflammation, College of Medical Veterinary and Life Sciences, University of Glasgow, Garscube Estate, Glasgow G61 1QH, UK
- Present address: Bristol-Myers Squibb, Mexico City, USA
| | - Megan Griffiths
- MRC – University of Glasgow Centre for Virus Research, Institute of Infection, Immunity and Inflammation, College of Medical Veterinary and Life Sciences, University of Glasgow, Garscube Estate, Glasgow G61 1QH, UK
| | - Andrew Stevenson
- MRC – University of Glasgow Centre for Virus Research, Institute of Infection, Immunity and Inflammation, College of Medical Veterinary and Life Sciences, University of Glasgow, Garscube Estate, Glasgow G61 1QH, UK
| | - Sally Roberts
- Institute of Cancer and Genomic Sciences, Institute of Biomedical Research West, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Sheila V Graham
- MRC – University of Glasgow Centre for Virus Research, Institute of Infection, Immunity and Inflammation, College of Medical Veterinary and Life Sciences, University of Glasgow, Garscube Estate, Glasgow G61 1QH, UK
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172
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Tripathy S, Rademan S, Matsabisa MG. Effects of Silver Nanoparticle from Dicoma anomala Sond. Root Extract on MCF-7 Cancer Cell Line and NF54 Parasite Strain: an In Vitro Study. Biol Trace Elem Res 2020; 195:82-94. [PMID: 31309447 DOI: 10.1007/s12011-019-01822-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 07/05/2019] [Indexed: 12/17/2022]
Abstract
Biogenic silver nanoparticles (AgNPs) continue captivating researchers in biomedicine field of research. Dicoma anomala Sond. plant, locally known as hloenya, hlonya, maagbossie, inyongwana, is widely recommended by South African traditional health practitioners (THPs) to treat against different health issues. The antiplasmodial effects of novel sesquiterpene molecules (C30H36O7; MW: 509.25) isolated from D. anomala Sond. have been reported by us (Patent US 8,586,112 B2). The aim of the study was to determine the anticancer activity of AgNPs synthesized using D. anomala plant root extract and the antiparasitic potency of AgNP-conjugated sesquiterpene. Nanoparticles have been characterized using different methods. Anticancer activity of AgNPs was evaluated against the MCF-7. This study also revealed that the AgNP-conjugated sesquiterpene has shown better antiparasitic activity against Plasmodium falciparum NF54 strain. One-pot synthesized AgNPs using Dicoma anomala Sond. root extract caused oxidative damage in breast cancer cells. These findings indicate the need for more in-depth research in the use of the AgNPs and sesquiterpene for development into potential leads as an antimalarial candidates and to improve the bioavailability of these sesquiterpenes.
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Affiliation(s)
- Satyajit Tripathy
- Department of Pharmacology, University of the Free State, PO Box 339, Bloemfontein, 9300, Republic of South Africa
| | - Sunelle Rademan
- Department of Pharmacology, University of the Free State, PO Box 339, Bloemfontein, 9300, Republic of South Africa
| | - Motlalepula G Matsabisa
- Department of Pharmacology, University of the Free State, PO Box 339, Bloemfontein, 9300, Republic of South Africa.
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Zhu X, Zhao Z, Zeng C, Chen B, Huang H, Chen Y, Zhou Q, Yang L, Lv J, Zhang J, Pan D, Shen J, Duque G, Cai D. HNGF6A Inhibits Oxidative Stress-Induced MC3T3-E1 Cell Apoptosis and Osteoblast Phenotype Inhibition by Targeting Circ_0001843/miR-214 Pathway. Calcif Tissue Int 2020; 106:518-532. [PMID: 32189040 DOI: 10.1007/s00223-020-00660-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 01/11/2020] [Indexed: 01/08/2023]
Abstract
Humanin (HN), a mitochondrial derived peptide, plays cyto-protective role under various stress. In this study, we aimed to investigate the effects of HNGF6A, an analogue of HN, on osteoblast apoptosis and differentiation and the underlying mechanisms. Cell proliferation of murine osteoblastic cell line MC3TC-E1 was examined by CCK8 assay and Edu staining. Cell apoptosis was detected by Annexin V assay under H2O2 treatment. The differentiation of osteoblast was determined by Alizarin red S staining. We also tested the expression of osteoblast phenotype related protein by real-time PCR and Western blot. The interaction between Circ_0001843 and miR-214, miR-214 and TAFA5 was examined by luciferase report assay. Circ_0001843 was inhibited by siRNA and miR-214 was suppressed by miR-214 inhibitor to determine the effects of Circ_0001843 and miR-214 on cell proliferation, apoptosis, and differentiation. HNGF6A, an analogue of HN, exerted cyto-protection and osteogenesis-promotion in MC3T3-E1 cells. The expression of osteoblast phenotype related protein was significantly induced by HNGF6A. Additionally, HNGF6A treatment decreased Circ_0001843 and increased miR-214 levels, as well as inhibited the phosphorylation of p38 and JNK. We further found that Circ_0001843 directly bound with miR-214, which in turn inhibited the phosphorylation of p38 and JNK. Furthermore, both Circ_0001843 overexpression and miR-214 knockdown significantly decreased the cyto-protection and osteogenic promotion of HNGF6A. In summary, our data showed that HNGF6A protected osteoblasts from oxidative stress-induced apoptosis and osteoblast phenotype inhibition by targeting Circ_0001843/miR-214 pathway and the downstream kinases, p38 and JNK.
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Affiliation(s)
- Xiao Zhu
- Department of Endocrinology, The Third Affiliated Hospital of Southern Medical University, No. 183 West Zhongshan Road, Tianhe District, Guangzhou, 510630, Guangdong, China
| | - Ziping Zhao
- Department of Joint Surgery, Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, The Third Affiliated Hospital of Southern Medical University, No.183 West Zhongshan Road, Tianhe District, Guangzhou, 510630, Guangdong, China
| | - Canjun Zeng
- Department of Foot and Ankle Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, 510630, Guangdong, China
| | - Bo Chen
- Department of Endocrinology, Guangdong Second Provincial General Hospital, Guangzhou, 510317, Guangdong, China
| | - Haifeng Huang
- Department of Internal Medicine, the Eastern Hospital of the First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510700, Guangdong, China
| | - Youming Chen
- Department of Clinical Laboratory, The Third Affiliated Hospital of Southern Medical University, Guangzhou, 510630, Guangdong, China
| | - Quan Zhou
- Department of Medical Image, The Third Affiliated Hospital of Southern Medical University, Guangzhou, 510630, Guangdong, China
| | - Li Yang
- Department of Endocrinology, People's Hospital of Hunan Province, Changsha, 410011, Hunan, China
| | - Jicheng Lv
- Department of Endocrinology, The Third Affiliated Hospital of Southern Medical University, No. 183 West Zhongshan Road, Tianhe District, Guangzhou, 510630, Guangdong, China
| | - Jing Zhang
- Department of Clinical Laboratory, The Third Affiliated Hospital of Southern Medical University, Guangzhou, 510630, Guangdong, China
| | - Daoyan Pan
- Department of Endocrinology, The Third Affiliated Hospital of Southern Medical University, No. 183 West Zhongshan Road, Tianhe District, Guangzhou, 510630, Guangdong, China
| | - Jie Shen
- Department of Endocrinology, The Third Affiliated Hospital of Southern Medical University, No. 183 West Zhongshan Road, Tianhe District, Guangzhou, 510630, Guangdong, China.
| | - Gustavo Duque
- Department of Medicine, Western Health, The University of Melbourne, St Albans, Victoria, 3021, Australia.
- Australian Institute for Musculoskeletal Science (AIMSS), The University of Melbourne and Western Health, St Albans, Victoria, 3021, Australia.
| | - Daozhang Cai
- Department of Joint Surgery, Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, The Third Affiliated Hospital of Southern Medical University, No.183 West Zhongshan Road, Tianhe District, Guangzhou, 510630, Guangdong, China.
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Ahn EM, Asamenew G, Kim HW, Lee SH, Yoo SM, Cho SM, Cha YS, Kang MS. Anti-Obesity Effects of Petasites japonicus (Meowi) Ethanol Extract on RAW 264.7 Macrophages and 3T3-L1 Adipocytes and Its Characterization of Polyphenolic Compounds. Nutrients 2020; 12:nu12051261. [PMID: 32365527 PMCID: PMC7282023 DOI: 10.3390/nu12051261] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 04/20/2020] [Accepted: 04/26/2020] [Indexed: 01/06/2023] Open
Abstract
Koreans have been consuming Petasites Japonicus (PJ) as food. Although the therapeutic effect of PJ on allergic or inflammatory reactions associated with asthma has been proven, its effect on obesity is unclear. Therefore, the present study was aimed to assess the obesity related anti-inflammatory and anti-adipogenic effects of ethanol extract PJ (EPJ) on the inflammatory response in RAW 264.7 macrophages and on differentiation in 3T3-L1 adipocytes. In addition, the polyphenolic compound was quantitatively characterized from the EPJ using ultra performance liquid chromatography coupled with diode array detector, quadrupole time-of-flight-mass spectrometry (UPLC-DAD-QToF-MS). In RAW 264.7 or 3T3-L1, reduction of nitric oxide (in macrophages) production as well as monocyte chemoattractant protein-1 and tumor necrosis factor-α were observed. Treatment of EPJ in adipocyte differentiation showed an improvement in adiponectin and lipid accumulation and a significant reduction of PPARγ and FABP-4 mRNA expression levels. On the other hand, mRNA expression of UCP-1, PPARα, and ACO increased in the EPJ treated group. In addition, a total of 26 polyphenolic compounds were detected and of which 12 are reported for the first time from PJ. The higher content of diverse polyphenolic compounds presented in EPJ might be responsible for the observed anti-inflammatory and anti-adipogenic effect. These results suggest that PJ is valuable in improving obesity-related inflammatory responses.
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Affiliation(s)
- Eun Mi Ahn
- Department of Food Science and Human Nutrition, Jeonbuk National University, 567 Baekje-daero, Jeonju, Jeollabuk-do 54896, Korea
| | - Gelila Asamenew
- Department of Food Science and Human Nutrition, Jeonbuk National University, 567 Baekje-daero, Jeonju, Jeollabuk-do 54896, Korea
- Department of Agrofood Resources, Food and Nutrition Division, National Institute of Agricultural Sciences, 166 Nongsaengmyeong-ro Wanju-gun, Jeollabuk-do 55365, Korea
| | - Heon Woong Kim
- Department of Agrofood Resources, Food and Nutrition Division, National Institute of Agricultural Sciences, 166 Nongsaengmyeong-ro Wanju-gun, Jeollabuk-do 55365, Korea
| | - Sang Hoon Lee
- Department of Agrofood Resources, Food and Nutrition Division, National Institute of Agricultural Sciences, 166 Nongsaengmyeong-ro Wanju-gun, Jeollabuk-do 55365, Korea
| | - Seon-Mi Yoo
- Department of Agrofood Resources, Food and Nutrition Division, National Institute of Agricultural Sciences, 166 Nongsaengmyeong-ro Wanju-gun, Jeollabuk-do 55365, Korea
| | - Soo-Muk Cho
- Department of Agrofood Resources, Food and Nutrition Division, National Institute of Agricultural Sciences, 166 Nongsaengmyeong-ro Wanju-gun, Jeollabuk-do 55365, Korea
| | - Youn-Soo Cha
- Department of Food Science and Human Nutrition, Jeonbuk National University, 567 Baekje-daero, Jeonju, Jeollabuk-do 54896, Korea
| | - Min-Sook Kang
- Department of Agrofood Resources, Food and Nutrition Division, National Institute of Agricultural Sciences, 166 Nongsaengmyeong-ro Wanju-gun, Jeollabuk-do 55365, Korea
- Correspondence: ; Tel.: +82-63-238-3581
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Barbeck M, Kühnel L, Witte F, Pissarek J, Precht C, Xiong X, Krastev R, Wegner N, Walther F, Jung O. Degradation, Bone Regeneration and Tissue Response of an Innovative Volume Stable Magnesium-Supported GBR/GTR Barrier Membrane. Int J Mol Sci 2020; 21:ijms21093098. [PMID: 32353983 PMCID: PMC7247710 DOI: 10.3390/ijms21093098] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 04/20/2020] [Accepted: 04/21/2020] [Indexed: 12/14/2022] Open
Abstract
Introduction: Bioresorbable collagenous barrier membranes are used to prevent premature soft tissue ingrowth and to allow bone regeneration. For volume stable indications, only non-absorbable synthetic materials are available. This study investigates a new bioresorbable hydrofluoric acid (HF)-treated magnesium (Mg) mesh in a native collagen membrane for volume stable situations. Materials and Methods: HF-treated and untreated Mg were compared in direct and indirect cytocompatibility assays. In vivo, 18 New Zealand White Rabbits received each four 8 mm calvarial defects and were divided into four groups: (a) HF-treated Mg mesh/collagen membrane, (b) untreated Mg mesh/collagen membrane (c) collagen membrane and (d) sham operation. After 6, 12 and 18 weeks, Mg degradation and bone regeneration was measured using radiological and histological methods. Results: In vitro, HF-treated Mg showed higher cytocompatibility. Histopathologically, HF-Mg prevented gas cavities and was degraded by mononuclear cells via phagocytosis up to 12 weeks. Untreated Mg showed partially significant more gas cavities and a fibrous tissue reaction. Bone regeneration was not significantly different between all groups. Discussion and Conclusions: HF-Mg meshes embedded in native collagen membranes represent a volume stable and biocompatible alternative to the non-absorbable synthetic materials. HF-Mg shows less corrosion and is degraded by phagocytosis. However, the application of membranes did not result in higher bone regeneration.
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Affiliation(s)
- Mike Barbeck
- Department of Oral Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, Study Group: Biomaterials/Surfaces, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
- BerlinAnalytix GmbH, 12109 Berlin, Germany
- Correspondence: ; Tel.: +49-(0)-176-81022467
| | - Lennart Kühnel
- Department of Oral Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, Study Group: Biomaterials/Surfaces, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Frank Witte
- Biotrics Bioimplants GmbH, 12109 Berlin, Germany
| | | | - Clarissa Precht
- Department of Oral Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, Study Group: Biomaterials/Surfaces, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Xin Xiong
- NMI Natural and Medical Sciences Institute, University of Tübingen, 72770 Reutlingen, Germany
| | - Rumen Krastev
- NMI Natural and Medical Sciences Institute, University of Tübingen, 72770 Reutlingen, Germany
- Faculty of Applied Chemistry, Reutlingen University, 72762 Reutlingen, Germany
| | - Nils Wegner
- Department of Materials Test Engineering (WPT), TU Dortmund University, 44227 Dortmund, Germany
| | - Frank Walther
- Department of Materials Test Engineering (WPT), TU Dortmund University, 44227 Dortmund, Germany
| | - Ole Jung
- Department of Oral Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, Study Group: Biomaterials/Surfaces, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany
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176
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Jung DY, Kim JH, Jung MH. Anti-Obesity Effects of Tanshinone I from Salvia miltiorrhiza Bunge in Mice Fed a High-Fat Diet through Inhibition of Early Adipogenesis. Nutrients 2020; 12:nu12051242. [PMID: 32349456 PMCID: PMC7281980 DOI: 10.3390/nu12051242] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 04/14/2020] [Accepted: 04/23/2020] [Indexed: 12/16/2022] Open
Abstract
Tanshinone I (Tan I) is a diterpenoid isolated from Salvia miltiorrhiza Bunge and exhibits antitumor effects in several cancers. However, the anti-obesity properties of Tan I remain unexplored. Here, we evaluated the anti-obesity effects of Tan I in high-fat-diet (HFD)-induced obese mice and investigated the underlying molecular mechanisms in 3T3-L1 cells. HFD-induced obese mice were orally administrated Tan I for eight weeks, and body weight, weight gain, hematoxylin and eosin staining and serum biological parameters were examined. The adipogenesis of 3T3-L1 preadipocytes was assessed using Oil Red O staining and measurement of intracellular triglyceride (TG) levels, and mitotic clonal expansion (MCE) and its related signal molecules were analyzed during early adipogenesis of 3T3-L1 cells. The administration of Tan I significantly reduced body weight, weight gain, and white adipocyte size, and improved obesity-induced serum levels of glucose, free fatty acid, total TG, and total cholesterol in vivo in HFD-induced obese mice. Furthermore, Tan I-administered mice demonstrated improvement of glucose metabolism and insulin sensitivity. Treatment with Tan I inhibited the adipogenesis of 3T3-L1 preadipocytes in vitro, with this inhibition mainly occurring at an early phase of adipogenesis through the attenuation of MCE via cell cycle arrest at the G1/S phase transition. Tan I inhibited the phosphorylation of p38, extracellular signal-regulated kinase (ERK), and Akt during the process of MCE, while it stimulated the phosphorylation of AMP-activated protein kinase. Furthermore, Tan I repressed the expression of CCAAT-enhancer-binding protein β (C/EBPβ), histone H3K9 demethylase JMJD2B, and subsequently cell cycle genes. Moreover, Tan I regulated the expression of early adipogenic transcription factors including GATAs and Kruppel-like factor family factors. These results indicate that Tan I prevents HFD-induced obesity via the inhibition of early adipogenesis, and thus improves glucose metabolism and insulin sensitivity. This suggests that Tan I possesses therapeutic potential for the treatment of obesity and obesity-related diseases.
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177
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Chen D, Zhao YY, Liang XY, Zhang LJ, Wei LL, Xie R, Zhang XC, Su XL, Zhao YF. [The molecular mechanism of fibroblast growth factor 21-inhibited leptin expression in adipocytes]. Sheng Li Xue Bao 2020; 72:175-180. [PMID: 32328611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The present study was aimed to clarify the signaling molecular mechanism by which fibroblast growth factor 21 (FGF21) regulates leptin gene expression in adipocytes. Differentiated 3T3-F442A adipocytes were used as study object. The mRNA expression level of leptin was detected by fluorescence quantitative RT-PCR. The phosphorylation levels of proteins of signal transduction pathways were detected by Western blot. The results showed that FGF21 significantly down-regulated the mRNA expression level of leptin in adipocytes, and FGF21 receptor inhibitor BGJ-398 could completely block this effect. FGF21 up-regulated the phosphorylation levels of ERK1/2 and AMPK in adipocytes. Either ERK1/2 inhibitor SCH772984 or AMPK inhibitor Compound C could partially block the inhibitory effect of FGF21, and the combined application of these two inhibitors completely blocked the effect of FGF21. Neither PI3K inhibitor LY294002 nor Akt inhibitor AZD5363 affected the inhibitory effect of FGF21 on leptin gene expression. These results suggest that FGF21 may inhibit leptin gene expression by activating ERK1/2 and AMPK signaling pathways in adipocytes.
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Affiliation(s)
- Di Chen
- Institute of Basic Medical Sciences, Department of Basic Medical Sciences, Xi'an Medical University, Xi'an 710021, China
| | - Yan-Yan Zhao
- Institute of Basic Medical Sciences, Department of Basic Medical Sciences, Xi'an Medical University, Xi'an 710021, China
| | - Xiang-Yan Liang
- Institute of Basic Medical Sciences, Department of Basic Medical Sciences, Xi'an Medical University, Xi'an 710021, China
| | - Li-Jun Zhang
- Institute of Basic Medical Sciences, Department of Basic Medical Sciences, Xi'an Medical University, Xi'an 710021, China
| | - Lan-Lan Wei
- Institute of Basic Medical Sciences, Department of Basic Medical Sciences, Xi'an Medical University, Xi'an 710021, China
| | - Rong Xie
- Institute of Basic Medical Sciences, Department of Basic Medical Sciences, Xi'an Medical University, Xi'an 710021, China
| | - Xiao-Chun Zhang
- Institute of Basic Medical Sciences, Department of Basic Medical Sciences, Xi'an Medical University, Xi'an 710021, China
| | - Xing-Li Su
- Institute of Basic Medical Sciences, Department of Basic Medical Sciences, Xi'an Medical University, Xi'an 710021, China
| | - Yu-Feng Zhao
- Institute of Basic Medical Sciences, Department of Basic Medical Sciences, Xi'an Medical University, Xi'an 710021, China.
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178
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Yu L, Rowe DW, Perera IP, Zhang J, Suib SL, Xin X, Wei M. Intrafibrillar Mineralized Collagen-Hydroxyapatite-Based Scaffolds for Bone Regeneration. ACS Appl Mater Interfaces 2020; 12:18235-18249. [PMID: 32212615 DOI: 10.1021/acsami.0c00275] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
As one of the major challenges in the field of tissue engineering, large skeletal defects have attracted wide attention from researchers. Collagen (Col) and hydroxyapatite (HA), the most abundant protein and the main component in natural bone, respectively, are usually used as a biomimetic composite material in tissue engineering due to their excellent biocompatibility and biodegradability. In this study, novel intrafibrillar mineralized Col-HA-based scaffolds, constructed in either cellular or lamellar microstructures, were established through a biomimetic method to enhance the new bone-regenerating capability of tissue engineering scaffolds. Moreover, iron (Fe) and manganese (Mn), two of the essential trace elements in the body, were successfully incorporated into the lamellar scaffold to further improve the osteoinductivity of these biomaterials. It was found that the lamellar scaffolds demonstrated better osteogenic abilities compared to both in-house and commercial Col-HA-based cellular scaffolds in vitro and in vivo. Meanwhile, Fe/Mn incorporation further amplified the osteogenic promotion of the lamellar scaffolds. More importantly, a synergistic effect was observed in the Fe and Mn dual-element-incorporated lamellar scaffolds for both in vitro osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs) and in vivo bone regeneration loaded with fresh bone marrow cells. This study provides a simple but practical strategy for the creation of functional scaffolds for bone regeneration.
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Affiliation(s)
- Le Yu
- Department of Chemical and Biomolecular Engineering, Ohio University, Athens, Ohio 45701, United States
| | - David W Rowe
- Center for Regenerative Medicine and Skeletal Development, School of Dental Medicine, University of Connecticut Health Center, Farmington, Connecticut 06032, United States
| | | | | | | | - Xiaonan Xin
- Center for Regenerative Medicine and Skeletal Development, School of Dental Medicine, University of Connecticut Health Center, Farmington, Connecticut 06032, United States
| | - Mei Wei
- Department of Mechanical Engineering, Ohio University, Athens, Ohio 45701, United States
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179
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Zhang W, Ji T, Lyon S, Mehta M, Zheng Y, Deng X, Liu A, Shagan A, Mizrahi B, Kohane DS. Functionalized Multiarmed Polycaprolactones as Biocompatible Tissue Adhesives. ACS Appl Mater Interfaces 2020; 12:17314-17320. [PMID: 32227980 DOI: 10.1021/acsami.0c03478] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Existing tissue adhesives have a trade-off between adhesive strength and biocompatibility. Here, we report a series of biocompatible multiarmed polycaprolactones (PCL) as tissue adhesives that can be released from a hot glue gun and the length of each arm was kept at ∼2-3 kg mol-1 in all the polymers. The adhesion properties were dependent on the number of functionalized (N-hydroxysuccinimide ester (NHS), aldehyde (CHO), and isocyanate (NCO)) arms of the multiarmed polymers. The more arms, the higher the adhesion strength. For example, the adhesion strength in binding cut rat skin increased from 2.3 N cm-2 for 2PCL-NHS to 11.2 N cm-2 for 8-PCL-NHS. CHO- and NCO-modified 8PCL also had suitable adhesive properties. All the multiarmed polymers had minimal cytotoxicity in vitro and good biocompatibility in vivo, suggesting their potential as promising alternative surgical adhesives.
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Affiliation(s)
- Wei Zhang
- Laboratory for Biomaterials and Drug Delivery, The Department of Anesthesiology, Critical Care, and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Tianjiao Ji
- Laboratory for Biomaterials and Drug Delivery, The Department of Anesthesiology, Critical Care, and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Sophie Lyon
- Laboratory for Biomaterials and Drug Delivery, The Department of Anesthesiology, Critical Care, and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Manisha Mehta
- Laboratory for Biomaterials and Drug Delivery, The Department of Anesthesiology, Critical Care, and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Yueqin Zheng
- Laboratory for Biomaterials and Drug Delivery, The Department of Anesthesiology, Critical Care, and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Xiaoran Deng
- Laboratory for Biomaterials and Drug Delivery, The Department of Anesthesiology, Critical Care, and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Andong Liu
- Laboratory for Biomaterials and Drug Delivery, The Department of Anesthesiology, Critical Care, and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Alona Shagan
- Faculty of Biotechnology and Food Engineering, Technion, Haifa 3200003, Israel
| | - Boaz Mizrahi
- Faculty of Biotechnology and Food Engineering, Technion, Haifa 3200003, Israel
| | - Daniel S Kohane
- Laboratory for Biomaterials and Drug Delivery, The Department of Anesthesiology, Critical Care, and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
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180
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Kumar P, Kandi SK, Mukhopadhyay K, Rawat DS. Synthesis of novel monocarbonyl curcuminoids, evaluation of their efficacy against MRSA, including ex vivo infection model and their mechanistic studies. Eur J Med Chem 2020; 195:112276. [PMID: 32279050 DOI: 10.1016/j.ejmech.2020.112276] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 02/27/2020] [Accepted: 03/24/2020] [Indexed: 02/06/2023]
Abstract
In continuation of our effort to improve the physiological stability and the antibacterial activity of curcuminoids against drug-resistant bacteria, a series of novel monocarbonyl curcuminoids were synthesized and screened for antibacterial activity against S. aureus and E. coli strains. These curcuminoids showed potent antibacterial activity against both methicillin-sensitive and methicillin-resistant strains of S. aureus with MIC values 2-8 and 4-16 μg/mL, respectively. They also exhibited moderate potency against E. coli strains. The four most active curcuminoids (7d, 7i, 7m, and 7p) were on further investigation found to be very stable under physiological conditions, non-hemolytic, and non-toxic toward mammalian cells up to 150 μg/mL concentration. Mechanistic studies revealed that these curcuminoids displayed potent bactericidal activity by targeting cell membranes. Further, in an ex vivo mammalian co-culture infection model study, remarkably, the curcuminoids 7i and 7p were able to clear the internalized bacteria in mammalian cells and the activity was found to be superior to conventional antibiotics such as vancomycin and linezolid. Therefore, the present study affords us water-soluble, stable, non-toxic curcuminoids that may serve as lead molecules for development as antibacterial agents against MRSA infections.
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Affiliation(s)
- Prince Kumar
- Antimicrobial Research Laboratory, School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | | | - Kasturi Mukhopadhyay
- Antimicrobial Research Laboratory, School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, 110067, India.
| | - Diwan S Rawat
- Department of Chemistry, University of Delhi, Delhi, 110007, India.
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181
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Du C, Wang C, Zhang T, Yi X, Liang J, Wang H. Reduced bacterial adhesion on zirconium-based bulk metallic glasses by femtosecond laser nanostructuring. Proc Inst Mech Eng H 2020; 234:387-397. [PMID: 31884888 DOI: 10.1177/0954411919898011] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
As high-performing materials, bulk metallic glasses have attracted widespread attention for biomedical applications. Herein, the bacterial adhesion properties of femtosecond laser-nanostructured surfaces of four types of zirconium-based bulk metallic glasses are assessed. Laser-induced periodical surface structures and nanoparticle structures were fabricated by femtosecond laser irradiation under different energy intensities (0.23 and 2.3 J/mm2). Surface topography, roughness, wettability, and surface energy were investigated after femtosecond laser irradiation and the surface bacterial adhesion properties were explored using Escherichia coli and Staphylococcus aureus as respective representatives of Gram-negative and Gram-positive bacteria. 4',6-Diamidino-2-phenylindole fluorescence staining was used to characterize and assess the bacterial surface coverage rate. The in vitro cytotoxicity of polished and laser-nanostructured surfaces was investigated using MC3T3-E cells. The obtained results demonstrate that femtosecond laser surface nanostructuring retained the amorphous structure of zirconium-based bulk metallic glasses and led to an obvious decrease in bacterial adhesion compared with polished surfaces. The inhibition of bacterial adhesion on laser-induced periodical surface structures was greater than on nanostructured surfaces after 24 h of bacterial incubation. In addition, femtosecond laser nanostructuring did not have an apparent effect on the cytotoxicity of zirconium-based bulk metallic glasses.
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Affiliation(s)
- Cezhi Du
- School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou, China
| | - Chengyong Wang
- School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou, China
| | - Tao Zhang
- School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou, China
| | - Xin Yi
- School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou, China
| | - Jianyi Liang
- School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou, China
| | - Hongjian Wang
- School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou, China
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182
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He X, Yang Y, Song H, Wang S, Zhao H, Wei D. Polyanionic Composite Membranes Based on Bacterial Cellulose and Amino Acid for Antimicrobial Application. ACS Appl Mater Interfaces 2020; 12:14784-14796. [PMID: 32141282 DOI: 10.1021/acsami.9b20733] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Ideal wound dressing materials should be active components in the healing process. Bacterial cellulose (BC) has attracted a great deal of attention as novel wound dressing materials; however, it has no intrinsic antimicrobial activity. To explore the practical application values of BC and develop novel wound dressing materials, a series of composite membranes based on BC and polymeric ionic liquids (BC/PILs, composed of BC, and PILs formed by choline and different amino acids) with antimicrobial activity were synthesized by an ex situ method. The physicochemical and antimicrobial properties and biocompatibility of these membranes were systematically investigated. The results indicated that BC/PIL membranes with excellent properties could be obtained by adjusting the concentration and type of PILs. Several kinds of BC/PIL membranes exhibited good biocompatibility and high antimicrobial activity against Gram-positive and Gram-negative bacteria and fungus. The anionic PILs played important roles in the antimicrobial activity of BC/PIL membranes. The obtained membranes provided a novel promising candidate for wound dressing materials.
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Affiliation(s)
- Xiaoling He
- State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Chemistry and Chemical Engineering, Tiangong University, Tianjin 300387, China
| | - Yuqing Yang
- State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Chemistry and Chemical Engineering, Tiangong University, Tianjin 300387, China
| | - Haode Song
- State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Chemistry and Chemical Engineering, Tiangong University, Tianjin 300387, China
| | - Shuai Wang
- State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Chemistry and Chemical Engineering, Tiangong University, Tianjin 300387, China
| | - He Zhao
- State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Chemistry and Chemical Engineering, Tiangong University, Tianjin 300387, China
| | - Dongsheng Wei
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, College of Life Science, Nankai University, Tianjin 300071, China
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183
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Su P, Yin C, Li D, Yang C, Wang X, Pei J, Tian Y, Qian A. MACF1 promotes preosteoblast migration by mediating focal adhesion turnover through EB1. Biol Open 2020; 9:bio048173. [PMID: 32139394 PMCID: PMC7104863 DOI: 10.1242/bio.048173] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 02/20/2020] [Indexed: 12/25/2022] Open
Abstract
Microtubule actin crosslinking factor 1 (MACF1) is a widely expressed cytoskeletal linker and plays an essential role in various cells' functions by mediating cytoskeleton organization and dynamics. However, the role of MACF1 on preosteoblast migration is not clear. Here, by using MACF1 knockdown and overexpressed MC3T3-E1 cells, we found MACF1 positively regulated preosteoblast migration induced by cell polarization. Furthermore, immunofluorescent staining showed that MACF1 increased end-binding protein (EB1) distribution on microtubule (MT), and decreased EB1 distribution on focal adhesion (FA) complex. Moreover, upregulation of MACF1 activated Src level and enhanced the colocalization of EB1 with activated Src. In addition, MACF1 diminished colocalization of EB1 with adenomatous polyposis coli (APC), which induced EB1 release from FA and promoted FA turnover. These results indicated an important role and mechanism of MACF1 in regulating preosteoblast migration through promoting FA turnover by mediating EB1 colocalization with Src and APC, which inferred that MACF1 might be a potential target for preventing and treating bone disorders.
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Affiliation(s)
- Peihong Su
- Laboratory for Bone Metabolism, Key Laboratory for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
- Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
- NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
| | - Chong Yin
- Laboratory for Bone Metabolism, Key Laboratory for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
- Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
- NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
| | - Dijie Li
- Laboratory for Bone Metabolism, Key Laboratory for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
- Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
- NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
| | - Chaofei Yang
- Laboratory for Bone Metabolism, Key Laboratory for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
- Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
- NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
| | - Xue Wang
- Laboratory for Bone Metabolism, Key Laboratory for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
- Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
- NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
| | - Jiawei Pei
- Laboratory for Bone Metabolism, Key Laboratory for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
- Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
- NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
| | - Ye Tian
- Laboratory for Bone Metabolism, Key Laboratory for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
- Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
- NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
| | - Airong Qian
- Laboratory for Bone Metabolism, Key Laboratory for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
- Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
- NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
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184
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Krawczyk P, Wybranowski T, Kaźmierski Ł, Hołyńska-Iwan I, Bratkowska M, Cysewski P, Jędrzejewska B. 2'-(1H-phenanthro[9,10-d]imidazol-2-yl)-phenyl-4-carboxylic acid N-hydroxysuccinimide ester: A new phenanthroimidazole derivative as a fluorescent probe for medical imaging applications. Spectrochim Acta A Mol Biomol Spectrosc 2020; 228:117757. [PMID: 31718978 DOI: 10.1016/j.saa.2019.117757] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 10/24/2019] [Accepted: 11/03/2019] [Indexed: 06/10/2023]
Abstract
In this study a new probe (2'-(1H-phenanthro[9,10-d]imidazol-2-yl)-phenyl-4-carboxylic acid N-hydroxysuccinimide ester, PB1-1) was synthesized and presented, containing the ester group as reactive group for medical imaging applications. The tests included a comparison to the PB1 probe with the aldehyde group described earlier. Also, the photophysics of PB1 and PB1-1 when conjugated to albumin (HSA) and concanavalin A (Con A) was studied. The fluorescence anisotropy measurements and the method of fluorescence quenching of protein were used to examine these interactions. The results showed that both dyes are highly bound to the studied proteins, especially PB1-1. In the present study we also compared the stability of prepared conjugates. The in vitro study have shown that all tested compounds presented to be usable in the case of fixated cell staining. PB1-1-ConA and PB1-1-HSA were characterized with the lowest cytotoxicity during the MTT assay, and thus should be more suitable for live imaging applications than PB1-ConA and PB1-HSA. The results obtained in this work confirmed the theses presented in in silico studies as to the correctness of the choice of ester group as actively binding to the protein. At the same time, we have experimentally demonstrated the significant influence of a probe-protein linker on the spectral properties of conjugates used in medical imaging. We have clearly indicated that a detailed analysis of derivatives with different reactive group allows for proper probe selection. We also pointed out that based on the geometric skeleton of one dye, a whole range of fluorescent probes with different absorption and fluorescence spectra can be obtained for in vitro tests in medical imaging.
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Affiliation(s)
- Przemysław Krawczyk
- Nicolaus Copernicus University, Collegium Medicum, Faculty of Pharmacy, Department of Physical Chemistry, Kurpińskiego 5, 85-950 Bydgoszcz, Poland.
| | - Tomasz Wybranowski
- Nicolaus Copernicus University, Collegium Medicum, Faculty of Pharmacy, Medical Physics Division, Biophysics Department, Jagiellońska 13, 85-067 Bydgoszcz, Poland
| | - Łukasz Kaźmierski
- Nicolaus Copernicus University, Collegium Medicum, Faculty of Medicine, Department of Tissue Engineering, Karłowicza 24, 85-092 Bydgoszcz, Poland; Nicolaus Copernicus University, Collegium Medicum, Faculty of Medicine, Department of Oncology, Radiotherapy and Oncological, M. Curie Skłodowskiej 9, 85-094 Bydgoszcz, Poland
| | - Iga Hołyńska-Iwan
- Nicolaus Copernicus University, Collegium Medicum, Faculty of Pharmacy, Laboratory of Electrophysiology of Epithelial Tissue and Skin, Department of Pathobiochemistry and Clinical Chemistry, M. Curie Skłodowskiej 9, 85-094 Bydgoszcz, Poland
| | - Magdalena Bratkowska
- UTP University of Science and Technology, Faculty of Chemical Technology and Engineering, Seminaryjna 3, 85-326 Bydgoszcz, Poland
| | - Piotr Cysewski
- Nicolaus Copernicus University, Collegium Medicum, Faculty of Pharmacy, Department of Physical Chemistry, Kurpińskiego 5, 85-950 Bydgoszcz, Poland
| | - Beata Jędrzejewska
- UTP University of Science and Technology, Faculty of Chemical Technology and Engineering, Seminaryjna 3, 85-326 Bydgoszcz, Poland
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185
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Cvek M, Zahoranova A, Mrlik M, Sramkova P, Minarik A, Sedlacik M. Poly(2-oxazoline)-based magnetic hydrogels: Synthesis, performance and cytotoxicity. Colloids Surf B Biointerfaces 2020; 190:110912. [PMID: 32172162 DOI: 10.1016/j.colsurfb.2020.110912] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 01/30/2020] [Accepted: 02/27/2020] [Indexed: 01/15/2023]
Abstract
Research on the subject of smart biomaterials has become a cornerstone of tissue engineering and regenerative medicine. Herein, the authors report on developing magnetic hydrogels that combine high biocompatibility and remarkable activity in magnetic fields. We fabricated magnetic hydrogels based on poly(2-ethyl-2-oxazoline) (POx) via living ring-opening cationic polymerization with in-situ embedding of the carbonyl iron (CI) particles. Investigation was made as to the effect exerted by the concentration of CI on magnetic, viscoelastic/magnetorheological properties, the degree of equilibrium swelling, and cytotoxicity. The hydrogels exhibited an open pore structure, as evidenced by computed tomography (CT) imaging. Susceptibility measurements revealed the concentration-dependent field-induced particle restructuration indicating elongation/contraction of the material, thereby determining the potential for magneto-mechanical stimulation of the cells. The POx-based magnetic hydrogels were amphiphilic in character, showing decrease in their capability to hold liquid alongside increase in CI concentration. Viscoelastic measurements suggested that interaction occurred between the particles and matrix based on inconsistency between the experimental storage modulus and the Krieger-Dougherty model. The synthesized materials exhibited excellent biocompatibility toward the 3T3 fibroblast cell line in tests of extract toxicity and direct contact cytotoxicity (ISO standards). The unique combination of properties exhibited by the material - magneto-mechanical activity and biocompatibility - could prove favorable in fields such as biomedicine and biomechanics.
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Affiliation(s)
- Martin Cvek
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Trida T. Bati 5678, 760 01 Zlín, Czech Republic.
| | - Anna Zahoranova
- Polymer Institute, Slovak Academy of Sciences, Dubravska cesta 9, 845 41 Bratislava, Slovakia.
| | - Miroslav Mrlik
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Trida T. Bati 5678, 760 01 Zlín, Czech Republic
| | - Petra Sramkova
- Polymer Institute, Slovak Academy of Sciences, Dubravska cesta 9, 845 41 Bratislava, Slovakia
| | - Antonin Minarik
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Trida T. Bati 5678, 760 01 Zlín, Czech Republic; Department of Physics and Materials Engineering, Faculty of Technology, Tomas Bata University in Zlín, Vavreckova 275, 760 01 Zlín, Czech Republic
| | - Michal Sedlacik
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Trida T. Bati 5678, 760 01 Zlín, Czech Republic; Department of Production Engineering, Faculty of Technology, Tomas Bata University in Zlín, Vavreckova 275, 760 01 Zlín, Czech Republic
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186
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Wan Hasan WN, Chin KY, Abd Ghafar N, Soelaiman IN. Annatto-Derived Tocotrienol Promotes Mineralization of MC3T3-E1 Cells by Enhancing BMP-2 Protein Expression via Inhibiting RhoA Activation and HMG-CoA Reductase Gene Expression. Drug Des Devel Ther 2020; 14:969-976. [PMID: 32184566 PMCID: PMC7060796 DOI: 10.2147/dddt.s224941] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 02/14/2020] [Indexed: 12/14/2022] Open
Abstract
PURPOSE Annatto-derived tocotrienol (AnTT) has been shown to improve bone formation in animal models of osteoporosis and promote differentiation of pre-osteoblastic cells. However, the mechanism of action of AnTT in achieving these effects is unclear. This study aims to investigate the mechanism of action of AnTT on MC3T3-E1 pre-osteoblasts via the mevalonate pathway. METHODS Murine pre-osteoblastic cells, MC3T3-E1, were cultured with the density of 1 × 104 cells/mL and treated with 4 concentrations of AnTT (0.001-1 µg/mL). Expression of HMG-CoA reductase (HMGR) gene was carried out using qPCR after treatment with AnTT for 21 days. RhoA activation and bone morphogenetic protein-2 (BMP-2) were measured using immunoassay after 9 and 15 days of AnTT treatment. Lovastatin was used as the positive control. Mineralized nodules were detected using Von Kossa staining after 21 days of AnTT treatment. RESULTS The results showed that HMGR was up-regulated in the lovastatin group on day 9 and 21 compared to the control. Lovastatin also inhibited RhoA activation (day 9 and 15) and increased BMP-2 protein (day 15). On the other hand, AnTT at 0.001 μg/mL (day 3) and 0.1 μg/mL (day 21) significantly down-regulated HMGR gene expression compared to the control. On day 21, HMGR gene expression was significantly reduced in all groups compared to day 15. AnTT at 0.1 μg/mL significantly decreased RhoA activation on day 9 compared to the control. AnTT at 1 μg/mL significantly increased BMP-2 protein on day 15 compared to the control (P<0.05). Mineralized calcium nodules were more abundant in AnTT treated groups compared to the control on day 21. CONCLUSION AnTT suppresses the mevalonate pathway by downregulating HMGR gene expression and inhibiting RhoA activation, leading to increased BMP-2 protein in MC3T3-E1 cells. This explains the stimulating effects of AnTT on osteoblast mineralization.
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Affiliation(s)
- Wan Nuraini Wan Hasan
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia, UKM Medical Centre (UKMMC), Kuala Lumpur56000, Malaysia
| | - Kok-Yong Chin
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia, UKM Medical Centre (UKMMC), Kuala Lumpur56000, Malaysia
| | - Norzana Abd Ghafar
- Department of Anatomy, Faculty of Medicine, Universiti Kebangsaan Malaysia, UKM Medical Centre (UKMMC), Kuala Lumpur56000, Malaysia
| | - Ima Nirwana Soelaiman
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia, UKM Medical Centre (UKMMC), Kuala Lumpur56000, Malaysia
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187
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Isobe M, Toya H, Mito M, Chiba T, Asahara H, Hirose T, Nakagawa S. Forced isoform switching of Neat1_1 to Neat1_2 leads to the loss of Neat1_1 and the hyperformation of paraspeckles but does not affect the development and growth of mice. RNA 2020; 26:251-264. [PMID: 31822595 PMCID: PMC7025509 DOI: 10.1261/rna.072587.119] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 12/04/2019] [Indexed: 05/27/2023]
Abstract
Neat1 is a long noncoding RNA (lncRNA) that serves as an architectural component of the nuclear bodies known as paraspeckles. Two isoforms of Neat1, the short isoform Neat1_1 and the long isoform Neat1_2, are generated from the same gene locus by alternative 3' processing. Neat1_1 is the most abundant and the best conserved isoform expressed in various cell types, whereas Neat1_2 is expressed in a small population of particular cell types, including the tip cells of the intestinal epithelium. To investigate the physiological significance of isoform switching, we created mutant mice that solely expressed Neat1_2 by deleting the upstream polyadenylation (poly-A) signal (PAS) required for the production of Neat1_1. We observed the loss of Neat1_1 and strong up-regulation of Neat1_2 in various tissues and cells and the subsequent hyperformation of paraspeckles, especially in cells that normally express Neat1_2. However, the mutant mice were born at the expected Mendelian ratios and did not exhibit obvious external and histological abnormalities. These observations suggested that the hyperformation of paraspeckles does not interfere with the development and growth of these animals under normal laboratory conditions.
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Affiliation(s)
- Momo Isobe
- RNA Biology Laboratory, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Hikaru Toya
- RNA Biology Laboratory, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Mari Mito
- RNA Systems Biochemistry Laboratory, RIKEN Cluster for Pioneering Research, Saitama 351-0198, Japan
| | - Tomoki Chiba
- Department of Systems BioMedicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
| | - Hiroshi Asahara
- Department of Systems BioMedicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
| | - Tetsuro Hirose
- Institute for Genetic Medicine, Hokkaido University, Sapporo 060-0815, Japan
| | - Shinichi Nakagawa
- RNA Biology Laboratory, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
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188
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Ayan B, Heo DN, Zhang Z, Dey M, Povilianskas A, Drapaca C, Ozbolat IT. Aspiration-assisted bioprinting for precise positioning of biologics. Sci Adv 2020; 6:eaaw5111. [PMID: 32181332 PMCID: PMC7060055 DOI: 10.1126/sciadv.aaw5111] [Citation(s) in RCA: 127] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 12/13/2019] [Indexed: 05/13/2023]
Abstract
Three-dimensional (3D) bioprinting is an appealing approach for building tissues; however, bioprinting of mini-tissue blocks (i.e., spheroids) with precise control on their positioning in 3D space has been a major obstacle. Here, we unveil "aspiration-assisted bioprinting (AAB)," which enables picking and bioprinting biologics in 3D through harnessing the power of aspiration forces, and when coupled with microvalve bioprinting, it facilitated different biofabrication schemes including scaffold-based or scaffold-free bioprinting at an unprecedented placement precision, ~11% with respect to the spheroid size. We studied the underlying physical mechanism of AAB to understand interactions between aspirated viscoelastic spheroids and physical governing forces during aspiration and bioprinting. We bioprinted a wide range of biologics with dimensions in an order-of-magnitude range including tissue spheroids (80 to 600 μm), tissue strands (~800 μm), or single cells (electrocytes, ~400 μm), and as applications, we illustrated the patterning of angiogenic sprouting spheroids and self-assembly of osteogenic spheroids.
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Affiliation(s)
- Bugra Ayan
- Engineering Science and Mechanics Department, Penn State University, University Park, PA 16802, USA
- The Huck Institutes of the Life Sciences, Penn State University, University Park, PA 16802, USA
| | - Dong Nyoung Heo
- Engineering Science and Mechanics Department, Penn State University, University Park, PA 16802, USA
- The Huck Institutes of the Life Sciences, Penn State University, University Park, PA 16802, USA
- Department of Dental Materials, School of Dentistry, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Zhifeng Zhang
- Engineering Science and Mechanics Department, Penn State University, University Park, PA 16802, USA
| | - Madhuri Dey
- The Huck Institutes of the Life Sciences, Penn State University, University Park, PA 16802, USA
- Department of Chemistry, Penn State University, University Park, PA 16802, USA
| | - Adomas Povilianskas
- Engineering Science and Mechanics Department, Penn State University, University Park, PA 16802, USA
| | - Corina Drapaca
- Engineering Science and Mechanics Department, Penn State University, University Park, PA 16802, USA
| | - Ibrahim T. Ozbolat
- Engineering Science and Mechanics Department, Penn State University, University Park, PA 16802, USA
- The Huck Institutes of the Life Sciences, Penn State University, University Park, PA 16802, USA
- Biomedical Engineering Department, Penn State University, University Park, PA 16802, USA
- Materials Research Institute, Penn State University, University Park, PA 16802, USA
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189
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Hussey GS, Pineda Molina C, Cramer MC, Tyurina YY, Tyurin VA, Lee YC, El-Mossier SO, Murdock MH, Timashev PS, Kagan VE, Badylak SF. Lipidomics and RNA sequencing reveal a novel subpopulation of nanovesicle within extracellular matrix biomaterials. Sci Adv 2020; 6:eaay4361. [PMID: 32219161 PMCID: PMC7083606 DOI: 10.1126/sciadv.aay4361] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 12/20/2019] [Indexed: 05/30/2023]
Abstract
Biomaterials composed of extracellular matrix (ECM) provide both mechanical support and a reservoir of constructive signaling molecules that promote functional tissue repair. Recently, matrix-bound nanovesicles (MBVs) have been reported as an integral component of ECM bioscaffolds. Although liquid-phase extracellular vesicles (EVs) have been the subject of intense investigation, their similarity to MBV is limited to size and shape. Liquid chromatography-mass spectrometry (LC-MS)-based lipidomics and redox lipidomics were used to conduct a detailed comparison of liquid-phase EV and MBV phospholipids. Combined with comprehensive RNA sequencing and bioinformatic analysis of the intravesicular cargo, we show that MBVs are a distinct and unique subpopulation of EV and a distinguishing feature of ECM-based biomaterials. The results begin to identify the differential biologic activities mediated by EV that are secreted by tissue-resident cells and deposited within the ECM.
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Affiliation(s)
- George S. Hussey
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, 450 Technology Drive, Suite 300, Pittsburgh, PA 15219-3110, USA
- Department of Surgery, School of Medicine, University of Pittsburgh, University of Pittsburgh Medical Center Presbyterian Hospital, 200 Lothrop Street, Pittsburgh, PA 15213, USA
| | - Catalina Pineda Molina
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, 450 Technology Drive, Suite 300, Pittsburgh, PA 15219-3110, USA
- Department of Surgery, School of Medicine, University of Pittsburgh, University of Pittsburgh Medical Center Presbyterian Hospital, 200 Lothrop Street, Pittsburgh, PA 15213, USA
| | - Madeline C. Cramer
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, 450 Technology Drive, Suite 300, Pittsburgh, PA 15219-3110, USA
- Department of Bioengineering, University of Pittsburgh, 3700 O’Hara Street, Pittsburgh, PA 15261, USA
| | - Yulia Y. Tyurina
- Center for Free Radical and Antioxidant Health and Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, PA 15219, USA
| | - Vladimir A. Tyurin
- Center for Free Radical and Antioxidant Health and Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, PA 15219, USA
| | - Yoojin C. Lee
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, 450 Technology Drive, Suite 300, Pittsburgh, PA 15219-3110, USA
- Department of Bioengineering, University of Pittsburgh, 3700 O’Hara Street, Pittsburgh, PA 15261, USA
| | - Salma O. El-Mossier
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, 450 Technology Drive, Suite 300, Pittsburgh, PA 15219-3110, USA
| | - Mark H. Murdock
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, 450 Technology Drive, Suite 300, Pittsburgh, PA 15219-3110, USA
| | - Peter S. Timashev
- Laboratory of Navigational Redox Lipidomics, IM Sechenov Moscow State Medical University, Moscow, Russia
| | - Valerian E. Kagan
- Center for Free Radical and Antioxidant Health and Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, PA 15219, USA
- Laboratory of Navigational Redox Lipidomics, IM Sechenov Moscow State Medical University, Moscow, Russia
- Departments of Pharmacology and Chemical Biology, Chemistry, Radiation Oncology, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Stephen F. Badylak
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, 450 Technology Drive, Suite 300, Pittsburgh, PA 15219-3110, USA
- Department of Surgery, School of Medicine, University of Pittsburgh, University of Pittsburgh Medical Center Presbyterian Hospital, 200 Lothrop Street, Pittsburgh, PA 15213, USA
- Department of Bioengineering, University of Pittsburgh, 3700 O’Hara Street, Pittsburgh, PA 15261, USA
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190
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Huang D, Hou X, Zhang D, Zhang Q, Yan C. Two novel polysaccharides from rhizomes of Cibotium barometz promote bone formation via activating the BMP2/SMAD1 signaling pathway in MC3T3-E1 cells. Carbohydr Polym 2020; 231:115732. [PMID: 31888819 DOI: 10.1016/j.carbpol.2019.115732] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 11/19/2019] [Accepted: 12/09/2019] [Indexed: 01/06/2023]
Abstract
Cibotium barometz, an important traditional Chinese medicine, is used in strengthening bones and tendons. We found that C. barometz crude polysaccharides (CB70) could alleviate bone loss and markedly improve the biomechanical properties of OVX rats. Thus, to clarify biological active ingredient(s) of CB70, two homogeneous polysaccharides (CBP70-1-1 and CBP70-1-2) were purified from CB70. A combination of monosaccharide composition, FT-IR, GC-MS and NMR analysis indicated that CBP70-1-1 was composed of →6)-D-Galp-(1→, D-Glcp-(1→, →3,6)-D-Manp-(1→, →4)-D-Glcp-(1→ and →6)-D-Glcp-(1→ with relative molecular weights of 12,724 Da, and CBP70-1-2 was composed of →4)-D-Glcp-(1→, D-Glcp-(1→, →3,6)-D-Manp-(1→, →6)-D-Galp-(1→, →4,6)-D-Glcp-(1→ and →3)-L-Araf-(1→ with relative molecular weights of 3611 Da. Morphological analyses revealed that CBP70-1-1 and CBP70-1-2 appeared as a sheet that were irregular in size and shape, while the surface of CBP70-1-1 was full of sharp protuberances and CBP70-1-2 was smooth. Furthermore, the effects of CBP70-1-1 and CBP70-1-2 on the proliferation, differentiation and mineralization of mouse pre-osteoblastic MC3T3-E1 cells were assessed via CCK-8 assay, alkaline phosphatase activity assay, and alizarin red-based assay, respectively. These results revealed that CBP70-1-1 and CBP70-1-2 significantly promoted the proliferation, differentiation and mineralization of MC3T3-E1 cells, even better than E2. More importantly, quantitative real-time PCR and Western blot analysis indicated that CBP70-1-2 pronouncedly promoted the expression of osteogenic-related marker genes (Runx2, Osx, Ocn and Opn) and proteins (BMP2, RUNX2, OSX and p-SMAD1), which implies that the osteogenic activity of CBP70-1-2 is accomplished mainly by activating the BMP2/SMAD1 signaling pathway. These findings suggest CBP70-1-2 as a potential natural anti-osteoporotic agent for pharmacotherapy.
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Affiliation(s)
- Dong Huang
- Center for Clinical Precision Medication, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, 510006, China; School of Clinical Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China; School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Xin Hou
- School of Clinical Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Dawei Zhang
- Department of Osteoporosis, Shajing People's Hospital of Bao'an Shenzhen, Shenzhen, 518104, China
| | - Qian Zhang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
| | - Chunyan Yan
- Center for Clinical Precision Medication, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, 510006, China; School of Clinical Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
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191
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Isobe M, Toya H, Mito M, Chiba T, Asahara H, Hirose T, Nakagawa S. Forced isoform switching of Neat1_1 to Neat1_2 leads to the loss of Neat1_1 and the hyperformation of paraspeckles but does not affect the development and growth of mice. RNA 2020. [PMID: 31822595 DOI: 10.1101/698068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Neat1 is a long noncoding RNA (lncRNA) that serves as an architectural component of the nuclear bodies known as paraspeckles. Two isoforms of Neat1, the short isoform Neat1_1 and the long isoform Neat1_2, are generated from the same gene locus by alternative 3' processing. Neat1_1 is the most abundant and the best conserved isoform expressed in various cell types, whereas Neat1_2 is expressed in a small population of particular cell types, including the tip cells of the intestinal epithelium. To investigate the physiological significance of isoform switching, we created mutant mice that solely expressed Neat1_2 by deleting the upstream polyadenylation (poly-A) signal (PAS) required for the production of Neat1_1. We observed the loss of Neat1_1 and strong up-regulation of Neat1_2 in various tissues and cells and the subsequent hyperformation of paraspeckles, especially in cells that normally express Neat1_2. However, the mutant mice were born at the expected Mendelian ratios and did not exhibit obvious external and histological abnormalities. These observations suggested that the hyperformation of paraspeckles does not interfere with the development and growth of these animals under normal laboratory conditions.
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Affiliation(s)
- Momo Isobe
- RNA Biology Laboratory, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Hikaru Toya
- RNA Biology Laboratory, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Mari Mito
- RNA Systems Biochemistry Laboratory, RIKEN Cluster for Pioneering Research, Saitama 351-0198, Japan
| | - Tomoki Chiba
- Department of Systems BioMedicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
| | - Hiroshi Asahara
- Department of Systems BioMedicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
| | - Tetsuro Hirose
- Institute for Genetic Medicine, Hokkaido University, Sapporo 060-0815, Japan
| | - Shinichi Nakagawa
- RNA Biology Laboratory, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
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192
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Gryder BE, Khan J, Stanton BZ. Measurement of differential chromatin interactions with absolute quantification of architecture (AQuA-HiChIP). Nat Protoc 2020; 15:1209-1236. [PMID: 32051612 PMCID: PMC10763690 DOI: 10.1038/s41596-019-0285-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 12/16/2019] [Indexed: 01/08/2023]
Abstract
Methods developed to capture protein-anchored chromatin interactions (chromatin interaction analysis by paired-end tag sequencing and HiChIP) have yielded tremendous insights into the 3D folding principles of the genome, but are normalized by sequencing depth and therefore unable to accurately measure global changes in chromatin interactions and contact domain organization. We herein describe the protocol for absolute quantification of chromatin architecture (AQuA)-HiChIP, an advance that allows the absolute differences in protein-anchored chromatin interactions between samples to be determined. With our method, defined ratios of mouse and human fixed nuclei are mixed and subjected to endonuclease digestion. Chromatin contacts are captured by biotin-dATP incorporation and proximity ligation, followed by gentle shearing, ChIP, biotin capture and paired-end sequencing. 3D contacts are counted from paired-end tags (PETs) from the human genome and are normalized to the total PETs from the mouse genome. As orthogonal normalization allows observation of global changes, the approach will enable more quantitative insights into the topological determinants of transcriptional control and tissue-specific epigenetic memory. With our approach, we have discovered that rapid histone deacetylase inhibition disrupts super enhancer function by creating many new aberrant contacts. The code for data analysis is available at https://github.com/GryderArt/AQuA-HiChIP. This protocol reports both experimental and bioinformatic details to perform AQuA-HiChIP, going from cell culture to ranking chromatin interactions within 6 d.
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Affiliation(s)
- Berkley E Gryder
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
| | - Javed Khan
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
| | - Benjamin Z Stanton
- Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA.
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193
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Abstract
Conventional cancer therapies possess a plethora of limitations which led to the awakening of nanotechnology and nanomedicine. However, technological success is widely dependent on complete understanding of the complexity and heterogeneity of tumor biology on one hand and nanobiointeractions associated with challenges of synthesis, translation, and commercialization on the other. The present study therefore deals with one such targeted approach aiming at synthesizing, characterizing, and understanding the efficacy of molybdenum oxide nanoparticles. The phase structure, morphology, and elemental composition of the synthesized nanoparticles were characterized using Fourier transform infrared spectroscopy, Raman spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and scanning electron microscopy. The cytotoxicity studies revealed that the IC50 vales of molybdenum trioxide (MoO3) particles against skin cancer cells (melanoma and non-melanoma) were around 200-300 μg. The nanoparticles were found to induce mitochondrial-mediated apoptosis driven by the apoptotic genes such as BAX and Bcl2. Molybdenum being a cofactor for the majority of metabolic enzymes could have triggered the selective internalization of the nanoparticles which in turn could have modified the granularity of the cytoplasm and subsequently lead to mitochondrial-mediated apoptosis. Further, the anti-angiogenic property of MoO3 nanoparticles was corroborated using Chick chorioallantoic membrane (CAM) assay and aortic ring assay. Taken together , unraveling the role of MoO3 nanoparticles in cancer and angiogenesis opens up venues for nano biological intervention of selective cancer cell targeting with minimal damage to the normal cells using natural trace elements that are generally known to influence various metabolic enzymes.
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Affiliation(s)
- Janani Indrakumar
- Biological Materials Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai, Tamil Nadu, 600020, India
| | - Purna Sai Korrapati
- Biological Materials Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai, Tamil Nadu, 600020, India.
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194
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Baykal-Köse S, Acikgoz E, Yavuz AS, Gönül Geyik Ö, Ateş H, Sezerman OU, Özsan GH, Yüce Z. Adaptive phenotypic modulations lead to therapy resistance in chronic myeloid leukemia cells. PLoS One 2020; 15:e0229104. [PMID: 32106243 PMCID: PMC7046262 DOI: 10.1371/journal.pone.0229104] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 01/29/2020] [Indexed: 01/05/2023] Open
Abstract
Tyrosine kinase inhibitor (TKI) resistance is a major problem in chronic myeloid leukemia (CML). We generated a TKI-resistant K562 sub-population, K562-IR, under selective imatinib-mesylate pressure. K562-IR cells are CD34-/CD38-, BCR-Abl-independent, proliferate slowly, highly adherent and form intact tumor spheroids. Loss of CD45 and other hematopoietic markers reveal these cells have diverged from their hematopoietic origin. CD34 negativity, high expression of E-cadherin and CD44; decreased levels of CD45 and β-catenin do not fully confer with the leukemic stem cell (LSC) phenotype. Expression analyses reveal that K562-IR cells differentially express tissue/organ development and differentiation genes. Our data suggest that the observed phenotypic shift is an adaptive process rendering cells under TKI stress to become oncogene independent. Cells develop transcriptional instability in search for a gene expression framework suitable for new environmental stresses, resulting in an adaptive phenotypic shift in which some cells partially display LSC-like properties. With leukemic/cancer stem cell targeted therapies underway, the difference between treating an entity and a spectrum of dynamic cellular states will have conclusive effects on the outcome.
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MESH Headings
- 3T3 Cells
- Animals
- Antigens, CD/genetics
- Antigens, CD/metabolism
- Cadherins/genetics
- Cadherins/metabolism
- Cell Proliferation/drug effects
- Cell Proliferation/genetics
- Drug Resistance, Neoplasm/drug effects
- Drug Resistance, Neoplasm/genetics
- Epithelial-Mesenchymal Transition/drug effects
- Epithelial-Mesenchymal Transition/genetics
- Fusion Proteins, bcr-abl/antagonists & inhibitors
- Fusion Proteins, bcr-abl/genetics
- Fusion Proteins, bcr-abl/metabolism
- Gene Expression Profiling
- Gene Expression Regulation, Neoplastic/drug effects
- Humans
- Imatinib Mesylate/pharmacology
- Imatinib Mesylate/therapeutic use
- K562 Cells
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics
- Mice
- Mutation/drug effects
- Oligonucleotide Array Sequence Analysis
- Protein Domains/genetics
- Protein Kinase Inhibitors/pharmacology
- Protein Kinase Inhibitors/therapeutic use
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Affiliation(s)
- Seda Baykal-Köse
- Department of Medical Biology, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Eda Acikgoz
- Department of Histology and Embryology, Faculty of Medicine, Ege University, Izmir, Turkey
- Department of Histology and Embryology, Faculty of Medicine, Yuzuncu Yil University, Van, Turkey
| | - Ahmet Sinan Yavuz
- Department of Molecular Biology, Genetics and Bioengineering, Faculty of Engineering and Natural Sciences, Sabanci University, Istanbul, Turkey
| | - Öykü Gönül Geyik
- Department of Medical Biology, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Halil Ateş
- Department of Hematology, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Osman Uğur Sezerman
- Department of Biostatistics and Medical Informatics, School of Medicine, Acibadem University, Istanbul, Turkey
| | - Güner Hayri Özsan
- Department of Hematology, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Zeynep Yüce
- Department of Medical Biology, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
- * E-mail: ,
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195
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Shi L, Hu F, Duan Y, Wu W, Dong J, Meng X, Zhu X, Liu B. Hybrid Nanospheres to Overcome Hypoxia and Intrinsic Oxidative Resistance for Enhanced Photodynamic Therapy. ACS Nano 2020; 14:2183-2190. [PMID: 32023035 DOI: 10.1021/acsnano.9b09032] [Citation(s) in RCA: 109] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Photodynamic therapy (PDT) has been a well-accepted clinical treatment for malignant tumors owing to its noninvasiveness and high spatiotemporal selectivity. However, the efficiency of PDT is still severely hindered by an inherent aggregation-caused quenching (ACQ) effect of traditional photosensitizers (PSs), the presence of B-cell lymphoma 2 (Bcl-2), an antiapoptosis protein in cells, and hypoxia in the tumor microenvironment. To address these issues, hybrid nanospheres containing Fe3+, aggregation-induced emission (AIE) PS, and Bcl-2 inhibitor of sabutoclax were constructed via coordination-driven self-assembly in aqueous media. Once the hybrid nanospheres are taken up by tumor cells, intracellular O2 concentration is observed to increase via Fenton reaction driven by Fe3+, whereas intracellular PDT resistance of the AIE PS was mitigated by sabutoclax. The design of the multifunctional hybrid nanospheres demonstrates a prospective nanoplatform for image-guided enhanced PDT of tumors.
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Affiliation(s)
- Leilei Shi
- Department of Chemical and Biomolecular Engineering , National University of Singapore , 4 Engineering Drive 4 , Singapore 117585
| | - Fang Hu
- Department of Chemical and Biomolecular Engineering , National University of Singapore , 4 Engineering Drive 4 , Singapore 117585
| | - Yukun Duan
- Department of Chemical and Biomolecular Engineering , National University of Singapore , 4 Engineering Drive 4 , Singapore 117585
| | - Wenbo Wu
- Department of Chemical and Biomolecular Engineering , National University of Singapore , 4 Engineering Drive 4 , Singapore 117585
| | - Jinqiao Dong
- Department of Chemical and Biomolecular Engineering , National University of Singapore , 4 Engineering Drive 4 , Singapore 117585
| | - Xiangjun Meng
- Department of Gastroenterology, Shanghai Ninth People's Hospital , Shanghai Jiao Tong University School of Medicine , 639 Zhizaoju Road , Shanghai 200011 , China
| | - Xinyuan Zhu
- School of Chemistry and Chemical Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China
| | - Bin Liu
- Department of Chemical and Biomolecular Engineering , National University of Singapore , 4 Engineering Drive 4 , Singapore 117585
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196
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Zhang JQ, Siltanen CA, Liu L, Chang KC, Gartner ZJ, Abate AR. Linked optical and gene expression profiling of single cells at high-throughput. Genome Biol 2020; 21:49. [PMID: 32093753 PMCID: PMC7041248 DOI: 10.1186/s13059-020-01958-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 02/13/2020] [Indexed: 12/13/2022] Open
Abstract
Single-cell RNA sequencing has emerged as a powerful tool for characterizing cells, but not all phenotypes of interest can be observed through changes in gene expression. Linking sequencing with optical analysis has provided insight into the molecular basis of cellular function, but current approaches have limited throughput. Here, we present a high-throughput platform for linked optical and gene expression profiling of single cells. We demonstrate accurate fluorescence and gene expression measurements on thousands of cells in a single experiment. We use the platform to characterize DNA and RNA changes through the cell cycle and correlate antibody fluorescence with gene expression. The platform's ability to isolate rare cell subsets and perform multiple measurements, including fluorescence and sequencing-based analysis, holds potential for scalable multi-modal single-cell analysis.
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Affiliation(s)
- Jesse Q Zhang
- Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, CA, USA
- UC Berkeley-UCSF Graduate Program in Bioengineering, University of California San Francisco, San Francisco, CA, USA
| | - Christian A Siltanen
- Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, CA, USA
| | - Leqian Liu
- Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, CA, USA
| | - Kai-Chun Chang
- Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, CA, USA
| | - Zev J Gartner
- UC Berkeley-UCSF Graduate Program in Bioengineering, University of California San Francisco, San Francisco, CA, USA
- Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, CA, USA
- California Institute for Quantitative Biosciences, University of California San Francisco, San Francisco, CA, USA
- Chan Zuckerberg Biohub, San Francisco, CA, USA
| | - Adam R Abate
- Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, CA, USA.
- UC Berkeley-UCSF Graduate Program in Bioengineering, University of California San Francisco, San Francisco, CA, USA.
- California Institute for Quantitative Biosciences, University of California San Francisco, San Francisco, CA, USA.
- Chan Zuckerberg Biohub, San Francisco, CA, USA.
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197
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Orozco P, Montoya Y, Bustamante J. Development of endomyocardial fibrosis model using a cell patterning technique: In vitro interaction of cell coculture of 3T3 fibroblasts and RL-14 cardiomyocytes. PLoS One 2020; 15:e0229158. [PMID: 32092082 PMCID: PMC7039516 DOI: 10.1371/journal.pone.0229158] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 01/30/2020] [Indexed: 01/07/2023] Open
Abstract
Cardiac functions can be altered by changes in the microstructure of the heart, i.e., remodeling of the cardiac tissue, which may activate pathologies such as hypertrophy, dilation, or cardiac fibrosis. Cardiac fibrosis can develop due to an excessive deposition of extracellular matrix proteins, which are products of the activation of fibroblasts. In this context, the anatomical-histological change may interfere with the functioning of the cardiac tissue, which requires specialized cells for its operation. The purpose of the present study was to determine the cellular interactions and morphological changes in cocultures of 3T3 fibroblasts and RL-14 cardiomyocytes via the generation of a platform an in vitro model. For this purpose, a platform emulating the biological characteristics of endomyocardial fibrosis was generated using a cell patterning technique to study morphological cellular changes in compact and irregular patterns of fibrosis. It was found that cellular patterns emulating the geometrical distributions of endomyocardial fibrosis generated morphological changes after interaction of the RL-14 cardiomyocytes with the 3T3 fibroblasts. Through this study, it was possible to evaluate biological characteristics such as cell proliferation, adhesion, and spatial distribution, which are directly related to the type of emulated endomyocardial fibrosis. This research concluded that fibroblasts inhibited the proliferation of cardiomyocytes via their interaction with specific microarchitectures. This behavior is consistent with the histopathological distribution of cardiac fibrosis; therefore, the platform developed in this research could be useful for the in vitro assessment of cellular microdomains. This would allow for the experimental determination of interactions with drugs, substrates, or biomaterials within the engineering of cardiac tissues.
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Affiliation(s)
- Paola Orozco
- Centro de Bioingeniería, Grupo de Dinámica Cardiovascular, Universidad Pontificia Bolivariana, Medellín, Colombia
| | - Yuliet Montoya
- Centro de Bioingeniería, Grupo de Dinámica Cardiovascular, Universidad Pontificia Bolivariana, Medellín, Colombia
- Comité de Trabajo de Bioingeniería Cardiovascular, Sociedad Colombiana de Cardiología y Cirugía Cardiovascular, Bogotá, Colombia
| | - John Bustamante
- Centro de Bioingeniería, Grupo de Dinámica Cardiovascular, Universidad Pontificia Bolivariana, Medellín, Colombia
- Comité de Trabajo de Bioingeniería Cardiovascular, Sociedad Colombiana de Cardiología y Cirugía Cardiovascular, Bogotá, Colombia
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198
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Song J, Liu H, Lei M, Tan H, Chen Z, Antoshin A, Payne GF, Qu X, Liu C. Redox-Channeling Polydopamine-Ferrocene (PDA-Fc) Coating To Confer Context-Dependent and Photothermal Antimicrobial Activities. ACS Appl Mater Interfaces 2020; 12:8915-8928. [PMID: 31971763 DOI: 10.1021/acsami.9b22339] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Microbial disinfection associated with medical device surfaces has been an increasing need, and surface modification strategies such as antibacterial coatings have gained great interest. Here, we report the development of polydopamine-ferrocene (PDA-Fc)-functionalized TiO2 nanorods (Ti-Nd-PDA-Fc) as a context-dependent antibacterial system on implant to combat bacterial infection and hinder biofilm formation. In this work, two synergistic antimicrobial mechanisms of the PDA-Fc coating are proposed. First, the PDA-Fc coating is redox-active and can be locally activated to release antibacterial reactive oxygen species (ROS), especially ·OH in response to the acidic microenvironment induced by bacteria colonization and host immune responses. The results demonstrate that redox-based antimicrobial activity of Ti-Nd-PDA-Fc offers antibacterial efficacy of over 95 and 92% against methicillin-resistant Staphylococcus aureus (MRSA) and Escherichia coli (E. coli), respectively. Second, the photothermal effect of PDA can enhance the antibacterial capability upon near-infrared (NIR) irradiation, with over 99% killing efficacy against MRSA and E. coli, and even suppress the formation of biofilm through both localized hyperthermia and enhanced ·OH generation. Additionally, Ti-Nd-PDA-Fc is biocompatible when tested with model pre-osteoblast MC-3T3 E1 cells and promotes cell adhesion and spreading presumably due to its nanotopographical features. The MRSA-infected wound model also indicates that Ti-Nd-PDA-Fc with NIR irradiation can effectively eliminate bacterial infection and suppress host inflammatory responses. We believe that this study demonstrates a simple means to create biocompatible redox-active coatings that confer context-dependent antibacterial activities to implant surfaces.
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Affiliation(s)
- Jialin Song
- Key Laboratory for Ultrafine Materials of Ministry of Education, Engineering Research Centre for Biomedical Materials of Ministry of Education, School of Material Science and Engineering , East China University of Science and Technology , Shanghai 200237 , China
| | - Huan Liu
- Key Laboratory for Ultrafine Materials of Ministry of Education, Engineering Research Centre for Biomedical Materials of Ministry of Education, School of Material Science and Engineering , East China University of Science and Technology , Shanghai 200237 , China
| | - Miao Lei
- Key Laboratory for Ultrafine Materials of Ministry of Education, Engineering Research Centre for Biomedical Materials of Ministry of Education, School of Material Science and Engineering , East China University of Science and Technology , Shanghai 200237 , China
| | - Haoqi Tan
- Key Laboratory for Ultrafine Materials of Ministry of Education, Engineering Research Centre for Biomedical Materials of Ministry of Education, School of Material Science and Engineering , East China University of Science and Technology , Shanghai 200237 , China
| | - Zhanyi Chen
- Key Laboratory for Ultrafine Materials of Ministry of Education, Engineering Research Centre for Biomedical Materials of Ministry of Education, School of Material Science and Engineering , East China University of Science and Technology , Shanghai 200237 , China
| | - Artem Antoshin
- Institute for Regenerative Medicine , Sechenov University , 8-2 Trubetskaya Street , Moscow 119991 , Russia
| | - Gregory F Payne
- Department of Bioengineering , Institute for Biosystems and Biotechnology Research and Fischell , 5115 Plant Sciences Building, College Park , Maryland 20742 , United States
| | - Xue Qu
- Key Laboratory for Ultrafine Materials of Ministry of Education, Engineering Research Centre for Biomedical Materials of Ministry of Education, School of Material Science and Engineering , East China University of Science and Technology , Shanghai 200237 , China
| | - Changsheng Liu
- Key Laboratory for Ultrafine Materials of Ministry of Education, Engineering Research Centre for Biomedical Materials of Ministry of Education, School of Material Science and Engineering , East China University of Science and Technology , Shanghai 200237 , China
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199
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BAYGAR T. Characterization of silk sutures coated with propolis and biogenic silver nanoparticles (AgNPs); an eco-friendly solution with wound healing potential against surgical site infections (SSIs). Turk J Med Sci 2020; 50:258-266. [PMID: 31655520 PMCID: PMC7080367 DOI: 10.3906/sag-1906-48] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 10/09/2019] [Indexed: 01/09/2023] Open
Abstract
Background/aim Bacterial adherence to a suture material is one of the main causes of surgical site infections. An antibacterial suture material with enhanced wound healing function may protect the surgical site from infections. Thus, the present study aimed to investigate the synergistic effect of propolis and biogenic metallic nanoparticles when combined with silk sutures for biomedical use. Materials and methods Silver nanoparticle (AgNP) synthesis was carried out via a microbial-mediated biological route and impregnated on propolis-loaded silk sutures using an in situ process. Silk sutures fabricated with propolis and biosynthesized AgNPs (bioAgNP-propolis-coated sutures) were intensively characterized using scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). The antibacterial characteristics of the bioAgNP-propolis-coated sutures were evaluated using the agar plate method. The biocompatibility of the bioAgNP-propolis- coated sutures was evaluated using 3T3 fibroblast cells, and their wound-healing potential was also investigated. Results BioAgNP-propolis-coated sutures displayed potent antibacterial activity against pathogenic gram-negative and gram-positive bacteria, Escherichia coli and Staphylococcus aureus, respectively. BioAgNP-propolis-coated silk sutures were found to be biocompatible with 3T3 fibroblast cell culture. In vitro wound healing scratch assay also demonstrated that the extract of bioAgNP-propolis-coated sutures stimulated the 3T3 fibroblasts’ cell proliferation. Conclusion Coating the silk sutures with propolis and biogenic AgNPs gave an effective antibacterial capacity to surgical sutures besides providing biocompatibility and wound healing activity.
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Affiliation(s)
- Tuba BAYGAR
- Research Laboratories Center, Muğla Sıtkı Koçman University, MuğlaTurkey
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200
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Hulsart-Billström G, Stelzl C, Procter P, Pujari-Palmer M, Insley G, Engqvist H, Larsson S. In vivo safety assessment of a bio-inspired bone adhesive. J Mater Sci Mater Med 2020; 31:24. [PMID: 32036502 PMCID: PMC7007900 DOI: 10.1007/s10856-020-6362-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 01/08/2020] [Indexed: 05/14/2023]
Abstract
A new class of materials, bone adhesives, could revolutionise the treatment of highly fragmented fractures. We present the first biological safety investigation of a bio-inspired bone adhesive. The formulation was based upon a modified calcium phosphate cement that included the amino acid phosphoserine. This material has recently been described as substantially stronger than other bioresorbable calcium phosphate cements. Four adhesive groups with the active substance (phosphoserine) and two control groups without phosphoserine were selected for in vitro and in vivo biocompatibility testing. The test groups were subject for cell viability assay and subcutaneous implantation in rats that was followed by gene expression analysis and histology assessment after 6 and 12 weeks. All adhesive groups supported the same rate of cell proliferation compared to the α-TCP control and had viability between 45-64% when compared to cell control. There was no evidence of an increased immune response or ectopic bone formation in vivo. To conclude, this bio-inspired bone adhesive has been proven to be safe, in the present study, without any harmful effects on the surrounding soft tissue.
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Affiliation(s)
- Gry Hulsart-Billström
- Division of Orthopaedics, Department of Surgical Sciences, Uppsala University, Uppsala, 751 85, Sweden.
| | - Christina Stelzl
- Division of Orthopaedics, Department of Surgical Sciences, Uppsala University, Uppsala, 751 85, Sweden
| | - Philip Procter
- Division of Applied Material Science, Department of Engineering Sciences, Uppsala University, Uppsala, 751 21, Sweden
| | - Michael Pujari-Palmer
- Division of Applied Material Science, Department of Engineering Sciences, Uppsala University, Uppsala, 751 21, Sweden
| | - Gerard Insley
- GPBio Ltd, Unit 4D, Western Business Park, Shannnon, Co. Clare, Ireland
| | - Håkan Engqvist
- Division of Applied Material Science, Department of Engineering Sciences, Uppsala University, Uppsala, 751 21, Sweden
| | - Sune Larsson
- Division of Orthopaedics, Department of Surgical Sciences, Uppsala University, Uppsala, 751 85, Sweden
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