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Hendrawan S, Lheman J, Weber U, Oberkofler CE, Eryani A, Vonlanthen R, Baer HU. Fibroblast matrix implants-a better alternative for incisional hernia repair? Biomed Mater 2024; 19:035033. [PMID: 38604155 DOI: 10.1088/1748-605x/ad3da4] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 10/19/2023] [Accepted: 04/11/2024] [Indexed: 04/13/2024]
Abstract
The standard surgical procedure for abdominal hernia repair with conventional prosthetic mesh still results in a high recurrence rate. In the present study, we propose a fibroblast matrix implant (FMI), which is a three-dimensional (3D) poly-L-lactic acid scaffold coated with collagen (matrix) and seeded with fibroblasts, as an alternative mesh for hernia repair. The matrix was seeded with fibroblasts (cellularized) and treated with a conditioned medium (CM) of human Umbilical Cord Mesenchymal Stem Cells (hUC-MSC). Fibroblast proliferation and function were assessed and compared between treated with CM hUC-MSC and untreated group, 24 h after seeding onto the matrix (n= 3). To study the matricesin vivo,the hernia was surgically created on male Sprague Dawley rats and repaired with four different grafts (n= 3), including a commercial mesh (mesh group), a matrix without cells (cell-free group), a matrix seeded with fibroblasts (FMI group), and a matrix seeded with fibroblasts and cultured in medium treated with 1% CM hUC-MSC (FMI-CM group).In vitroexamination showed that the fibroblasts' proliferation on the matrices (treated group) did not differ significantly compared to the untreated group. CM hUC-MSC was able to promote the collagen synthesis of the fibroblasts, resulting in a higher collagen concentration compared to the untreated group. Furthermore, thein vivostudy showed that the matrices allowed fibroblast growth and supported cell functionality for at least 1 month after implantation. The highest number of fibroblasts was observed in the FMI group at the 14 d endpoint, but at the 28 d endpoint, the FMI-CM group had the highest. Collagen deposition area and neovascularization at the implantation site were observed in all groups without any significant difference between the groups. FMI combined with CM hUC-MSC may serve as a better option for hernia repair, providing additional reinforcement which in turn should reduce hernia recurrence.
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Affiliation(s)
- Siufui Hendrawan
- Tarumanagara Human Cell Technology Laboratory, Faculty of Medicine, Tarumanagara University, Jakarta 11440, Indonesia
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Tarumanagara University, Jakarta 11440, Indonesia
| | - Jennifer Lheman
- Tarumanagara Human Cell Technology Laboratory, Faculty of Medicine, Tarumanagara University, Jakarta 11440, Indonesia
| | - Ursula Weber
- Tarumanagara Human Cell Technology Laboratory, Faculty of Medicine, Tarumanagara University, Jakarta 11440, Indonesia
- Baermed, Centre of Abdominal Surgery, Hirslanden Clinic, 8032 Zürich, Switzerland
| | | | - Astheria Eryani
- Department of Histology, Faculty of Medicine, Tarumanagara University, Jakarta 11440, Indonesia
| | - René Vonlanthen
- Vivévis AG, Viszeral-, Tumor- und Roboterchirurgie, Kappelistrasse 7, 8002 Zürich, Switzerland
| | - Hans Ulrich Baer
- Tarumanagara Human Cell Technology Laboratory, Faculty of Medicine, Tarumanagara University, Jakarta 11440, Indonesia
- Baermed, Centre of Abdominal Surgery, Hirslanden Clinic, 8032 Zürich, Switzerland
- Department of Visceral and Transplantation Surgery, University of Bern, 3012 Bern, Switzerland
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Mazzaglia C, Munir H, Le IM, Gerigk M, Huang YYS, Shields JD. Modelling Structural Elements and Functional Responses to Lymphatic-Delivered Cues in a Murine Lymph Node on a Chip. Adv Healthc Mater 2024:e2303720. [PMID: 38626388 DOI: 10.1002/adhm.202303720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 04/08/2024] [Indexed: 04/18/2024]
Abstract
Lymph nodes (LNs) are organs of the immune system, critical for maintenance of homeostasis and initiation of immune responses, yet there are few models that accurately recapitulate LN functions in vitro. To tackle this issue, an engineered murine LN (eLN) was developed, replicating key cellular components of the mouse LN; incorporating primary murine lymphocytes, fibroblastic reticular cells (FRCs), and lymphatic endothelial cells (LECs). T and B cells compartments are incorporated within the eLN that mimic LN cortex and paracortex architectures. When challenged, the eLN elicits both robust inflammatory responses and antigen-specific immune activation, showing that the system can differentiate between non-specific and antigen-specific responses and can be monitored in real-time. Beyond immune responses, this model also enables interrogation of changes in stromal cells, thus permitting investigations of all LN cellular components in homeostasis and different disease settings, such as cancer. Here, we present how LN behavior can be influenced by murine melanoma-derived factors. In conclusion, the eLN model presents a promising platform for in vitro study of LN biology that will enhance understanding of stromal and immune responses in the murine LN, and in doing so will enable development of novel therapeutic strategies to improve LN responses in disease. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Corrado Mazzaglia
- MRC Cancer Unit, University of Cambridge, Cambridge, CB2 0XZ, UK
- The Nanoscience Centre, University of Cambridge, Cambridge, UK
| | - Hafsa Munir
- MRC Cancer Unit, University of Cambridge, Cambridge, CB2 0XZ, UK
- German Cancer Research Centre (DKFZ), Division of Dermal Oncoimmunology, Heidelberg, Germany
| | - Iek M Le
- Department of Engineering, University of Cambridge, Cambridge, UK
| | - Magda Gerigk
- The Nanoscience Centre, University of Cambridge, Cambridge, UK
- Department of Engineering, University of Cambridge, Cambridge, UK
| | - Yan Yan Shery Huang
- The Nanoscience Centre, University of Cambridge, Cambridge, UK
- Department of Engineering, University of Cambridge, Cambridge, UK
| | - Jacqueline D Shields
- MRC Cancer Unit, University of Cambridge, Cambridge, CB2 0XZ, UK
- Translational Medical Sciences, School of Medicine, University of Nottingham Biodiscovery Institute, Nottingham, NG7 2RD, UK
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Delgado D, Beitia M, Mercader Ruiz J, Sánchez P, Montoya-Alzola M, Fiz N, Sánchez M. A Novel Fibrin Matrix Derived from Platelet-Rich Plasma: Protocol and Characterization. Int J Mol Sci 2024; 25:4069. [PMID: 38612879 PMCID: PMC11012499 DOI: 10.3390/ijms25074069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 02/26/2024] [Revised: 03/31/2024] [Accepted: 04/05/2024] [Indexed: 04/14/2024] Open
Abstract
Although fibrin matrices derived from Platelet-Rich Plasma (PRP) are widely used in regenerative medicine, they have some limitations that can hinder their application. Modifying the composition of the PRP-derived fibrin matrix may improve its properties, making it suitable for certain medical uses. Three types of fibrin matrices were obtained: a PRP-derived fibrin matrix (FM), a PRP-derived fibrin matrix with a high fibrinogen content and platelets (FM-HFP) and a PRP-derived fibrin matrix with a high fibrinogen content (FM-HF). The fibrinogen levels, biomechanical properties and cell behavior were analyzed. The presence of platelets in the FM-HFP generated an inconsistent fibrin matrix that was discarded for the rest of the analysis. The fibrinogen levels in the FM-FH were higher than those in the FM (p < 0.0001), with a concentration factor of 6.86 ± 1.81. The values of clotting and swelling achieved using the FM-HF were higher (p < 0.0001), with less clot shrinkage (p < 0.0001). The FM had a significantly higher stiffness and turned out to be the most adherent composition (p = 0.027). In terms of cell viability, the FM-HF showed less cell proliferation but higher live/dead ratio values (p < 0.01). The increased fibrinogen and platelet removal in the FM-HF improved its adhesion and other biomechanical properties without affecting cell viability.
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Affiliation(s)
- Diego Delgado
- Advanced Biological Therapy Unit, Hospital Vithas Vitoria, 01008 Vitoria-Gasteiz, Spain; (D.D.); (M.B.); (J.M.R.); (P.S.)
| | - Maider Beitia
- Advanced Biological Therapy Unit, Hospital Vithas Vitoria, 01008 Vitoria-Gasteiz, Spain; (D.D.); (M.B.); (J.M.R.); (P.S.)
| | - Jon Mercader Ruiz
- Advanced Biological Therapy Unit, Hospital Vithas Vitoria, 01008 Vitoria-Gasteiz, Spain; (D.D.); (M.B.); (J.M.R.); (P.S.)
| | - Pello Sánchez
- Advanced Biological Therapy Unit, Hospital Vithas Vitoria, 01008 Vitoria-Gasteiz, Spain; (D.D.); (M.B.); (J.M.R.); (P.S.)
- Arthroscopic Surgery Unit, Hospital Vithas Vitoria, 01008 Vitoria-Gasteiz, Spain; (M.M.-A.); (N.F.)
| | - Marta Montoya-Alzola
- Arthroscopic Surgery Unit, Hospital Vithas Vitoria, 01008 Vitoria-Gasteiz, Spain; (M.M.-A.); (N.F.)
| | - Nicolás Fiz
- Arthroscopic Surgery Unit, Hospital Vithas Vitoria, 01008 Vitoria-Gasteiz, Spain; (M.M.-A.); (N.F.)
| | - Mikel Sánchez
- Advanced Biological Therapy Unit, Hospital Vithas Vitoria, 01008 Vitoria-Gasteiz, Spain; (D.D.); (M.B.); (J.M.R.); (P.S.)
- Arthroscopic Surgery Unit, Hospital Vithas Vitoria, 01008 Vitoria-Gasteiz, Spain; (M.M.-A.); (N.F.)
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Helal NA, Martinez MN, Longstaff DG, Rahman Z, Nutan MTH, Khan MA. Development and Validation of Matrix of Chemistry, Manufacturing, and Control (MoCMC) System for Intramammary Drug Products (IMM). Pharm Res 2024:10.1007/s11095-024-03689-z. [PMID: 38561579 DOI: 10.1007/s11095-024-03689-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 03/05/2024] [Indexed: 04/04/2024]
Abstract
PURPOSE Products formulated for intramammary (IMM) infusion are intended for the delivery of therapeutic moieties directly into the udder through the teat canal to maximize drug exposure at the targeted clinical site, the mammary gland, with little to no systemic drug exposure. Currently, to our knowledge, there has been no in-vitro matrix system available to differentiate between IMM formulations. Our goal is to develop A custom tailored in-vitro "Matrix of Chemistry, Manufacturing and Control" (MoCMC) System to be a promising future tool for identifying inequivalent IMM formulations. MoCMC can detect inter and intra batch variabilities, thereby identifying potential generics versus brand product similarities or differences with a single numeric value and a specific & distinctive fingerprint. METHODS The FDA-approved IMM formulation, SPECTRAMASTⓇ LC, was selected as the reference product for the MoCMC. Twelve in-house test formulations containing ceftiofur hydrochloride were formulated and characterized. The MoCMC was developed to include six input parameters and three output parameters. The MoCMC system was used to evaluate and compare SPECTRAMASTⓇ LC with its in-house formulations. RESULTS Based on the MoCMC generated parameters, the distinctive fingerprints of MoCMC for each IMM formulations, and the statistical analyses of MCI and PPI values, in-house formulations, F-01 and F-02 showed consistency while the rest of in-house formulations (F-03-F-12) were significantly different as compared to SPECTRAMASTⓇ LC. CONCLUSION This research showed that the MoCMC approach can be used as a tool for intra batch variabilities, generics versus brand products comparisons, post-approval formulations changes, manufacturing changes, and formulation variabilities.
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Affiliation(s)
- Nada A Helal
- Department of Pharmaceutical Sciences, Irma Lerma Rangel School of Pharmacy, Texas A&M Health Science Center, Texas A&M University, College Station, TX, USA
| | - Marilyn N Martinez
- US FDA Center for Veterinary Medicine, Office of New Animal Drug Evaluation, Rockville, MD, USA
| | - David G Longstaff
- US FDA Center for Veterinary Medicine, Office of New Animal Drug Evaluation, Rockville, MD, USA
| | - Ziyaur Rahman
- Department of Pharmaceutical Sciences, Irma Lerma Rangel School of Pharmacy, Texas A&M Health Science Center, Texas A&M University, College Station, TX, USA
| | - Mohammad T H Nutan
- Department of Pharmaceutical Sciences, Irma Lerma Rangel School of Pharmacy, Texas A&M Health Science Center, Texas A&M University, College Station, TX, USA
| | - Mansoor A Khan
- Department of Pharmaceutical Sciences, Irma Lerma Rangel School of Pharmacy, Texas A&M Health Science Center, Texas A&M University, College Station, TX, USA.
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Zheng Q, Xu Y, Shen J. Hamiltonian energy in a modified Hindmarsh-Rose model. Front Netw Physiol 2024; 4:1362778. [PMID: 38595864 PMCID: PMC11002134 DOI: 10.3389/fnetp.2024.1362778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 03/04/2024] [Indexed: 04/11/2024]
Abstract
This paper investigates the Hamiltonian energy of a modified Hindmarsh-Rose (HR) model to observe its effect on short-term memory. A Hamiltonian energy function and its variable function are given in the reduced system with a single node according to Helmholtz's theorem. We consider the role of the coupling strength and the links between neurons in the pattern formation to show that the coupling and cooperative neurons are necessary for generating the fire or a clear short-term memory when all the neurons are in sync. Then, we consider the effect of the degree and external stimulus from other neurons on the emergence and disappearance of short-term memory, which illustrates that generating short-term memory requires much energy, and the coupling strength could further reduce energy consumption. Finally, the dynamical mechanisms of the generation of short-term memory are concluded.
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Affiliation(s)
- Qianqian Zheng
- School of Science, Xuchang University, Xuchang, Henan, China
| | - Yong Xu
- School of Mathematics and Statistics, Northwestern Polytechnical University, Xi’an, Shaanxi, China
| | - Jianwei Shen
- School of Mathematics and Statistics, North China University of Water Resources and Electric Power, Zhengzhou, Henan, China
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Gancedo-Gancedo T, Martín-Biedma B, Domínguez-Cachón J, Garrido-Parada S, Ababii V, Pereira-Lores P, García-Varela S, Castelo-Baz P. New Technique for Wedge Selection in Direct Class II Restorations: A Pilot Study. J Clin Med 2024; 13:1324. [PMID: 38592699 PMCID: PMC10931775 DOI: 10.3390/jcm13051324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 02/09/2024] [Accepted: 02/24/2024] [Indexed: 04/10/2024] Open
Abstract
Background: Performing an appropriate Class II direct restoration is a great challenge. The correct selection of the matrix system and the elements used for its stabilization will have a great impact on the result. The aim of this study is to show a new digital method for a predictable selection of the wedge and compare it with the conventional method. Methods: Sixty patients were randomly divided into two groups. In Group 0, the wedge was selected intraoperatively by visual examination, while in Group 1 the wedge was selected preoperatively through the measurement of the cervical embrasure on the bite-wing radiography. The number of wedges used, modifications to them, and tissue damage were registered, along with the quality of the proximal contact and the marginal adaptation. Results: Student's t-test revealed a statistical difference between the number of wedges used, which was higher in Group 0 (p < 0.05). Pearson Chi-square test showed that tissue damage was statistically higher in Group 0 (p < 0.05), while there was no statistically significant difference between groups in wedge modifications (p > 0.05). Group 1 revealed a higher frequency of satisfactory proximal contact and marginal adaptation (p < 0.05). Conclusions: This new technique reduces wedges waste and tissue damage and provides an adequate interproximal anatomy.
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Affiliation(s)
- Tania Gancedo-Gancedo
- Endodontics and Restorative Dentistry Unit, School of Medicine and Dentistry, University of Santiago de Compostela, 15705 Santiago de Compostela, Spain; (J.D.-C.); (S.G.-P.); (P.P.-L.); (S.G.-V.)
| | - Benjamín Martín-Biedma
- Oral Sciences Research Group, Endodontics and Restorative Dentistry Unit, School of Medicine and Dentistry, Health Research Institute of Santiago de Compostela (IDIS), University of Santiago de Compostela, 15705 Santiago de Compostela, Spain; (B.M.-B.); (P.C.-B.)
| | - Javier Domínguez-Cachón
- Endodontics and Restorative Dentistry Unit, School of Medicine and Dentistry, University of Santiago de Compostela, 15705 Santiago de Compostela, Spain; (J.D.-C.); (S.G.-P.); (P.P.-L.); (S.G.-V.)
| | - Sara Garrido-Parada
- Endodontics and Restorative Dentistry Unit, School of Medicine and Dentistry, University of Santiago de Compostela, 15705 Santiago de Compostela, Spain; (J.D.-C.); (S.G.-P.); (P.P.-L.); (S.G.-V.)
| | - Victoria Ababii
- Department of Odontology, Periodontology and Oral Pathology, Nicolae Testemițanu State University of Medicine and Pharmacy, 2004 Chișinău, Moldova;
| | - Patricia Pereira-Lores
- Endodontics and Restorative Dentistry Unit, School of Medicine and Dentistry, University of Santiago de Compostela, 15705 Santiago de Compostela, Spain; (J.D.-C.); (S.G.-P.); (P.P.-L.); (S.G.-V.)
| | - Sandra García-Varela
- Endodontics and Restorative Dentistry Unit, School of Medicine and Dentistry, University of Santiago de Compostela, 15705 Santiago de Compostela, Spain; (J.D.-C.); (S.G.-P.); (P.P.-L.); (S.G.-V.)
| | - Pablo Castelo-Baz
- Oral Sciences Research Group, Endodontics and Restorative Dentistry Unit, School of Medicine and Dentistry, Health Research Institute of Santiago de Compostela (IDIS), University of Santiago de Compostela, 15705 Santiago de Compostela, Spain; (B.M.-B.); (P.C.-B.)
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Lemaire B, Frias MA, Golaz O, Magnin JL, Viette V, Vuilleumier N, Waldvogel Abramowski S. Ferritin: A Biomarker Requiring Caution in Clinical Decision. Diagnostics (Basel) 2024; 14:386. [PMID: 38396425 PMCID: PMC10887646 DOI: 10.3390/diagnostics14040386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 02/02/2024] [Accepted: 02/06/2024] [Indexed: 02/25/2024] Open
Abstract
OBJECTIVES To determine the ferritin inter-assay differences between three "Conformité Européenne" (CE) marked tests, the impact on reference intervals (RI), and the proportion of individuals with iron deficiency (ID), we used plasma and serum from healthy blood donors (HBD) recruited in three different Switzerland regions. DESIGN AND METHODS Heparinized plasma and serum from HBD were obtained from three different transfusion centers in Switzerland (Fribourg, Geneva, and Neuchatel). One hundred forty samples were recruited per center and per matrix, with a gender ratio of 50%, for a total of 420 HBD samples available per matrix. On both matrices, ferritin concentrations were quantified by three different laboratories using electrochemiluminescence (ECL), latex immunoturbidimetric assay (LIA), and luminescent oxygen channeling immunoassay (LOCI) assays, respectively. The degree of agreement between matrices and between the three sites/methods was assessed by Passing-Bablok and we evaluated the proportion of individuals deemed to have ID per method. RESULTS Overall, no difference between serum and heparinized plasma ferritin values was observed according to Passing-Bablok analyses (proportional bias range: 1.0-3.0%; maximum constant bias: 1.84 µg/L). Significant median ferritin differences (p < 0.001 according to Kruskal-Wallis test) were observed between the three methods (i.e., 83.6 µg/L, 103.5 µg/L, and 62.1 µg/L for ECL, LIA, and LOCI in heparinized plasma, respectively), with proportional bias varying significantly between ±16% and ±32% on serum and from ±14% to ±35% on plasma with no sign of gender-related differences. Affecting the lower end of RI, the proportion of ID per method substantially varied between 4.76% (20/420) for ECL, 2.86% (12/420) for LIA, and 9.05% (38/420) for LOCI. CONCLUSIONS Serum and heparinized plasma are exchangeable for ferritin assessment. However, the order of magnitude of ferritin differences across methods and HBD recruitment sites could lead to diagnostic errors if uniform RI were considered. Challenging the recently proposed use of uniform ferritin thresholds, our results highlight the importance of method- and region-specific RI for ferritin due to insufficient inter-assay harmonization. Failing to do so significantly impacts ID diagnosis.
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Affiliation(s)
- Baptiste Lemaire
- Diagnostic Department, Geneva University Hospitals, 1205 Geneva, Switzerland
- Medicine Department, Geneva University Hospitals, 1205 Geneva, Switzerland
| | - Miguel A. Frias
- Diagnostic Department, Geneva University Hospitals, 1205 Geneva, Switzerland
| | - Olivier Golaz
- Diagnostic Department, Geneva University Hospitals, 1205 Geneva, Switzerland
| | - Jean-Luc Magnin
- Central Laboratory, HFR-Fribourg, 1700 Fribourg, Switzerland
| | | | - Nicolas Vuilleumier
- Diagnostic Department, Geneva University Hospitals, 1205 Geneva, Switzerland
| | - Sophie Waldvogel Abramowski
- Diagnostic Department, Geneva University Hospitals, 1205 Geneva, Switzerland
- Medicine Department, Geneva University Hospitals, 1205 Geneva, Switzerland
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Li M, Zhou J, Zhang T, Lu J, Wang Y, Liu J, Zhang X, Chen H. Updated Progress on Mass Spectrometry Imaging and its Application in Cancer Treatment and Drug Discovery. Recent Pat Anticancer Drug Discov 2024; 19:PRA-EPUB-137733. [PMID: 38275033 DOI: 10.2174/0115748928269691231203164021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 10/09/2023] [Accepted: 10/18/2023] [Indexed: 01/27/2024]
Abstract
BACKGROUND Mass spectrometry imaging (MSI) is an imaging method based on mass spectrometry technology that can simultaneously visualize the spatial distribution of various biological molecules. The use of MSI in cancer detection and drug discovery has been extensively investigated in recent years. OBJECTIVE This review aims to summarize the latest advances of MSI and its specific applications in cancer detection and drug discovery, providing a basic understanding of the development and application of MSI in the past five years and offering references for the further application of MSI in cancer detection and drug discovery. METHODS In the database, "mass spectrometry imaging", "cancer treatment", and "drug discovery" were used as keywords for literature retrieval, and the time range was limited to "2018- 2023". After organizing and analyzing the literature and patents, a review was conducted. RESULTS Based on the literature, it was found that the updated progress of MSI in the past five years mostly focused on concrete methods, operation procedures, facilities, and composite applications. The patents of MSI were mainly correlated with the mass spectrometry imaging system and its application in cancer treatment. MSI is conducive to investigating the therapeutic schedule of cancer and searching for new drugs. CONCLUSION MSI is a convenient, fast and powerful technology that has made great progress in sample preparation, instrumentation, quantitation, and multimodal imaging. MSI has emerged as a powerful technique in various biomedical applications, which has strong potential in cancer detection, treatment, formation mechanism research, discovery of biomarkers, and drug discovery process.
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Affiliation(s)
- Mingyue Li
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P.R. China
| | - Jingna Zhou
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P.R. China
| | - Tingting Zhang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P.R. China
| | - Jingyang Lu
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P.R. China
| | - Yajie Wang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P.R. China
| | - Junyu Liu
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P.R. China
| | - Xiaoyu Zhang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P.R. China
| | - Haixia Chen
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P.R. China
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Bhattacharya M, Horswill AR. The role of human extracellular matrix proteins in defining Staphylococcus aureus biofilm infections. FEMS Microbiol Rev 2024; 48:fuae002. [PMID: 38337187 PMCID: PMC10873506 DOI: 10.1093/femsre/fuae002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 07/19/2023] [Revised: 01/26/2024] [Accepted: 02/07/2024] [Indexed: 02/12/2024] Open
Abstract
Twenty to forty one percent of the world's population is either transiently or permanently colonized by the Gram-positive bacterium, Staphylococcus aureus. In 2017, the CDC designated methicillin-resistant S. aureus (MRSA) as a serious threat, reporting ∼300 000 cases of MRSA-associated hospitalizations annually, resulting in over 19 000 deaths, surpassing that of HIV in the USA. S. aureus is a proficient biofilm-forming organism that rapidly acquires resistance to antibiotics, most commonly methicillin (MRSA). This review focuses on a large group of (>30) S. aureus adhesins, either surface-associated or secreted that are designed to specifically bind to 15 or more of the proteins that form key components of the human extracellular matrix (hECM). Importantly, this includes hECM proteins that are pivotal to the homeostasis of almost every tissue environment [collagen (skin), proteoglycans (lung), hemoglobin (blood), elastin, laminin, fibrinogen, fibronectin, and fibrin (multiple organs)]. These adhesins offer S. aureus the potential to establish an infection in every sterile tissue niche. These infections often endure repeated immune onslaught, developing into chronic, biofilm-associated conditions that are tolerant to ∼1000 times the clinically prescribed dose of antibiotics. Depending on the infection and the immune response, this allows S. aureus to seamlessly transition from colonizer to pathogen by subtly manipulating the host against itself while providing the time and stealth that it requires to establish and persist as a biofilm. This is a comprehensive discussion of the interaction between S. aureus biofilms and the hECM. We provide particular focus on the role of these interactions in pathogenesis and, consequently, the clinical implications for the prevention and treatment of S. aureus biofilm infections.
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Affiliation(s)
- Mohini Bhattacharya
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO 80045, United States
| | - Alexander R Horswill
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO 80045, United States
- Department of Veterans Affairs, Eastern Colorado Health Care System, Aurora, CO 80045, United States
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Quoniou R, Moreau E, Cachin F, Miot-Noirault E, Chautard E, Peyrode C. 3D Coculture between Cancer Cells and Macrophages: From Conception to Experimentation. ACS Biomater Sci Eng 2024; 10:313-325. [PMID: 38110331 DOI: 10.1021/acsbiomaterials.3c01437] [Citation(s) in RCA: 0] [Impact Index Per Article: 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] [Indexed: 12/20/2023]
Abstract
A tumor is a complex cluster with many types of cells in the microenvironment that help it grow. Macrophages, immune cells whose main role is to maintain body homeostasis, represent in the majority of cancers the most important cell population. In this context, they are called tumor-associated macrophages (TAMs) because of their phenotype, which contributes to tumor growth. In order to limit the use of animals, there is a real demand for the creation of in vitro models able to represent more specifically the complexity of the tumor microenvironment (TME) in order to characterize it and evaluate new treatments. However, the two-dimensional (2D) culture, which has been used for a long time, has shown many limitations, especially in terms of tumor representation. The three-dimensional (3D) models, developed over the last 20 years, have made it possible to get closer to what happens in vivo in terms of phenotypic and functional characteristics. Due to their architectural similarity to in vivo tissues, they provide a more physiologically relevant in vitro system. Most recently, it is the development of 3D coculture models in which two or three cell lines are cultured together that has allowed a better representation of TME with cell-cell interactions. Unfortunately, there is no clear direction for the design of these models at this time. In this Review on the coculture between cancer cells and TAMs, an in-depth analysis is performed to answer multiple questions on the conception of these models: Which models to use, and with which material and cancer lineage? Which monocyte or macrophage lines should be added to the coculture? And how can these models be exploited?
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Affiliation(s)
- Rohan Quoniou
- Imagerie Moléculaire et Stratégies Théranostiques, UMR1240, Université Clermont Auvergne, INSERM, 63000 Clermont-Ferrand, France
| | - Emmanuel Moreau
- Imagerie Moléculaire et Stratégies Théranostiques, UMR1240, Université Clermont Auvergne, INSERM, 63000 Clermont-Ferrand, France
| | - Florent Cachin
- Imagerie Moléculaire et Stratégies Théranostiques, UMR1240, Université Clermont Auvergne, INSERM, 63000 Clermont-Ferrand, France
- Service de Médecine Nucléaire, Centre Jean Perrin, 63000 Clermont-Ferrand, France
| | - Elisabeth Miot-Noirault
- Imagerie Moléculaire et Stratégies Théranostiques, UMR1240, Université Clermont Auvergne, INSERM, 63000 Clermont-Ferrand, France
| | - Emmanuel Chautard
- Imagerie Moléculaire et Stratégies Théranostiques, UMR1240, Université Clermont Auvergne, INSERM, 63000 Clermont-Ferrand, France
- Service de Pathologie, Centre Jean Perrin, 63000 Clermont-Ferrand, France
| | - Caroline Peyrode
- Imagerie Moléculaire et Stratégies Théranostiques, UMR1240, Université Clermont Auvergne, INSERM, 63000 Clermont-Ferrand, France
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11
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Hu H, Wu Y, Gong X. Organosilicon-Based Carbon Dots and Their Versatile Applications. Small 2024; 20:e2305933. [PMID: 37661362 DOI: 10.1002/smll.202305933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/09/2023] [Indexed: 09/05/2023]
Abstract
Carbon dots (CDs) are a newly discovered type of fluorescent material that has gained significant attention due to their exceptional optical properties, biocompatibility, and other remarkable characteristics. However, single CDs have some drawbacks such as self-quenching, low quantum yield (QY), and poor stability. To address these issues, researchers have turned to organosilicon, which is known for its green, economical, and abundant properties. Organosilicon is widely used in various fields including optics, electronics, and biology. By utilizing organosilicon as a synthetic precursor, the biocompatibility, QY, and resistance to self-quenching of CDs can be improved. Meanwhile, the combination of organosilicon with CDs enables the functionalization of CDs, which significantly expands their original application scenarios. This paper comprehensively analyzes organosilicon in two main categories: precursors for CD synthesis and matrix materials for compounding with CDs. The role of organosilicon in these categories is thoroughly reviewed. In addition, the paper presents various applications of organosilicon compounded CDs, including detection and sensing, anti-counterfeiting, optoelectronic applications, and biological applications. Finally, the paper briefly discusses current development challenges and future directions in the field.
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Affiliation(s)
- Huajiang Hu
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Yongzhong Wu
- School of Mechanical Engineering, Suzhou University of Science and Technology, Suzhou, 215009, P. R. China
| | - Xiao Gong
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, P. R. China
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12
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Arendowski A, Sibińska E, Miśta W, Fijałkowski P, Złoch M, Gabryś D, Pomastowski P. Study of sample preparation influence on bacterial lipids profile in matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. Lipids 2024; 59:13-26. [PMID: 38062798 DOI: 10.1002/lipd.12383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 05/31/2023] [Revised: 10/27/2023] [Accepted: 11/22/2023] [Indexed: 01/23/2024]
Abstract
Lipids are one of the cell components therefore it is important to be able to accurately assess them. One of the analytical techniques used to study lipid profiles is matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI TOF MS). The present study attempted to select optimal conditions for sample preparation and MALDI MS analysis of bacterial lipidome in both positive and negative ion modes using different extraction protocols-Folch, Matyash, and Bligh & Dyer, solvents used to apply samples, and matrices such as 9-aminoacridine (9-AA), α-cyano-4-hydroxycinnamic acid (CHCA), 2,5-dihydroxybenzoic acid (DHB), 2-mercaptobenzothiazole (MBT), and 2,4,6-trihydroxyacetophenone (THAP). The obtained results allowed concluding that DHB or CHCA matrices are suitable for lipid analysis in the positive mode, and in the negative mode THAP or 9-AA. The most appropriate protocol for extracting lipids from bacterial cells was the Bligh & Dyer method in both ionization modes. The use of the solvent TA30, which was a mixture of acetonitrile and 0.1% trifluoroacetic acid in water, provided on the spectra a significant number of signals from lipids in all groups analyzed, such as fatty acyls, glycerolipids, and glycerophospholipids.
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Affiliation(s)
- Adrian Arendowski
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, Toruń, Poland
| | - Ewelina Sibińska
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, Toruń, Poland
- Faculty of Chemistry, Nicolaus Copernicus University, Toruń, Poland
| | - Wioletta Miśta
- Radiotherapy Department, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice, Poland
| | - Piotr Fijałkowski
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, Toruń, Poland
- Faculty of Chemistry, Nicolaus Copernicus University, Toruń, Poland
| | - Michał Złoch
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, Toruń, Poland
- Faculty of Chemistry, Nicolaus Copernicus University, Toruń, Poland
| | - Dorota Gabryś
- Radiotherapy Department, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice, Poland
| | - Paweł Pomastowski
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, Toruń, Poland
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13
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Min JH, Lee S, Lim HJ, Kang MK, Son H, Kim BG, Hong YS. Characterization of nickel levels considering seasonal and intra-individual variation using three biological matrices. Environ Sci Pollut Res Int 2024; 31:2546-2554. [PMID: 38063972 DOI: 10.1007/s11356-023-31252-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 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] [Received: 08/18/2023] [Accepted: 11/22/2023] [Indexed: 01/18/2024]
Abstract
Nickel compounds are classified as group 1 carcinogens by the International Agency for Research on Cancer. However, only a few exposure assessment studies have been conducted on such compounds to date. In this study, we investigated the distribution of nickel in three biological types of samples (blood, serum, and urine) and its temporal variability through repeated measurements. From 2020 to 2021, blood and urine samples were collected for four times from 50 healthy participants. Nickel concentrations were determined using inductively coupled plasma mass spectrometry, and inter-individual correlation was calculated from linear mixed model. The overall geometric mean of nickel was 1.028 μg/L in blood, 0.687 μg/L in serum, and 1.464 μg/L in urine. Blood nickel was the highest in November (blood: 1.197 μg/L), and the geometric mean of nickel concentrations in the serum and urine were the highest in March (serum: 1.146 μg/L; urine: 1.893 μg/L). This matched seasonal trends for fine particulate matter concentrations from 2020 to 2021. Thus, seasonal effects significantly affect nickel levels in blood, serum, and urine. The inter-individual correlations were low as 0.081 for blood and 0.064 for urine. In addition, the correlation of nickel levels between each biological sample was low. It was also found that age, gender, commuting time, and different matrices affect concentrations. Blood and serum nickel levels were high in this study compared to other nationwide data, with urinary nickel ranking the second highest among the six countries examined. Therefore, biomonitoring study in the general population should be conducted, and finding a suitable matrix that can reflect nickel exposure to set exposure guideline levels is imperative.
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Affiliation(s)
- Jae-Hee Min
- Department of Preventive Medicine, College of Medicine, Dong-A University, 32 Daesingongwon-ro, Seo-gu, Busan, 49201, Korea
- Environmental Health Center for Busan, Dong-A University, Busan, Korea
| | - Seungho Lee
- Department of Preventive Medicine, College of Medicine, Dong-A University, 32 Daesingongwon-ro, Seo-gu, Busan, 49201, Korea.
- Environmental Health Center for Busan, Dong-A University, Busan, Korea.
| | - Hyoun-Ju Lim
- Environmental Health Center for Busan, Dong-A University, Busan, Korea
| | - Min-Kyung Kang
- Department of Preventive Medicine, College of Medicine, Dong-A University, 32 Daesingongwon-ro, Seo-gu, Busan, 49201, Korea
| | - Hyunjin Son
- Department of Preventive Medicine, College of Medicine, Dong-A University, 32 Daesingongwon-ro, Seo-gu, Busan, 49201, Korea
| | - Byoung-Gwon Kim
- Department of Preventive Medicine, College of Medicine, Dong-A University, 32 Daesingongwon-ro, Seo-gu, Busan, 49201, Korea
- Environmental Health Center for Busan, Dong-A University, Busan, Korea
| | - Young-Seoub Hong
- Department of Preventive Medicine, College of Medicine, Dong-A University, 32 Daesingongwon-ro, Seo-gu, Busan, 49201, Korea
- Environmental Health Center for Busan, Dong-A University, Busan, Korea
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Stricker AM, Hutson MS, Page-McCaw A. Piezo initiates transient production of collagen IV to repair damaged basement membranes. bioRxiv 2023:2023.12.22.573147. [PMID: 38187749 PMCID: PMC10769369 DOI: 10.1101/2023.12.22.573147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
Basement membranes are sheets of extracellular matrix separating tissue layers and providing mechanical support. Their mechanical properties are determined largely by their most abundant protein, Collagen IV (Col4). Although basement membranes are repaired after damage, little is known about how. To wit, since basement membrane is extracellular it is unknown how damage is detected, and since Col4 is long-lived it is unknown how it is regulated to avoid fibrosis. Using the basement membrane of the adult Drosophila midgut as a model, we show that repair is distinct from maintenance. In healthy conditions, midgut Col4 originates from the fat body, but after damage, a subpopulation of enteroblasts we term "matrix menders" transiently express Col4, and Col4 from these cells is required for repair. Activation of the mechanosensitive channel Piezo is required for matrix menders to upregulate Col4, and the signal to initiate repair is a reduction in basement membrane stiffness. Our data suggests that mechanical sensitivity may be a general property of Col4-producing cells.
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Affiliation(s)
- Aubrie M. Stricker
- Department of Cell and Developmental Biology, Center for Matrix Biology, Program in Developmental Biology, Vanderbilt University, Nashville, TN, USA
| | - M. Shane Hutson
- Department of Physics and Astronomy, Department of Biological Sciences, Vanderbilt University, Nashville, TN, USA
| | - Andrea Page-McCaw
- Department of Cell and Developmental Biology, Center for Matrix Biology, Program in Developmental Biology, Vanderbilt University, Nashville, TN, USA
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15
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Chacón RD, Sánchez-Llatas CJ, Diaz Forero AJ, Guimarães MB, Pajuelo SL, Astolfi-Ferreira CS, Ferreira AJP. Evolutionary Analysis of a Parrot Bornavirus 2 Detected in a Sulphur-Crested Cockatoo ( Cacatua galerita) Suggests a South American Ancestor. Animals (Basel) 2023; 14:47. [PMID: 38200778 PMCID: PMC10778322 DOI: 10.3390/ani14010047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 12/15/2023] [Accepted: 12/15/2023] [Indexed: 01/12/2024] Open
Abstract
Parrot bornavirus (PaBV) is an RNA virus that causes Proventricular Dilatation Disease (PDD), neurological disorders, and death in Psittaciformes. Its diversity in South America is poorly known. We examined a Cacatua galerita presenting neuropathies, PDD, and oculopathies as the main signs. We detected PaBV through reverse transcription polymerase chain reaction (RT-PCR) and partial sequencing of the nucleoprotein (N) and matrix (M) genes. Maximum likelihood and Bayesian phylogenetic inferences classified it as PaBV-2. The nucleotide identity of the sequenced strain ranged from 88.3% to 90.3% against genotype PaBV-2 and from 80.2% to 84.4% against other genotypes. Selective pressure analysis detected signs of episodic diversifying selection in both the N and M genes. No recombination events were detected. Phylodynamic analysis estimated the time to the most recent common ancestor (TMRCA) as the year 1758 for genotype PaBV-2 and the year 1049 for the Orthobornavirus alphapsittaciforme species. Substitution rates were estimated at 2.73 × 10-4 and 4.08 × 10-4 substitutions per year per site for N and M, respectively. The analysis of population dynamics showed a progressive decline in the effective population size during the last century. Timescale phylogeographic analysis revealed a potential South American ancestor as the origin of genotypes 1, 2, and 8. These results contribute to our knowledge of the evolutionary origin, diversity, and dynamics of PaBVs in South America and the world. Additionally, it highlights the importance of further studies in captive Psittaciformes and the potential impact on endangered wild birds.
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Affiliation(s)
- Ruy D. Chacón
- Department of Pathology, School of Veterinary Medicine, University of São Paulo, Av. Prof. Orlando Marques de Paiva, 87, São Paulo 05508-900, Brazil; (R.D.C.); (A.J.D.F.); (M.B.G.); (C.S.A.-F.)
| | - Christian J. Sánchez-Llatas
- Department of Genetics, Physiology, and Microbiology, Faculty of Biology, Complutense University of Madrid (UCM), 28040 Madrid, Spain;
| | - Andrea J. Diaz Forero
- Department of Pathology, School of Veterinary Medicine, University of São Paulo, Av. Prof. Orlando Marques de Paiva, 87, São Paulo 05508-900, Brazil; (R.D.C.); (A.J.D.F.); (M.B.G.); (C.S.A.-F.)
| | - Marta B. Guimarães
- Department of Pathology, School of Veterinary Medicine, University of São Paulo, Av. Prof. Orlando Marques de Paiva, 87, São Paulo 05508-900, Brazil; (R.D.C.); (A.J.D.F.); (M.B.G.); (C.S.A.-F.)
| | - Sarah L. Pajuelo
- Faculty of Biological Sciences, National University of Trujillo, Trujillo 13001, La Libertad, Peru;
| | - Claudete S. Astolfi-Ferreira
- Department of Pathology, School of Veterinary Medicine, University of São Paulo, Av. Prof. Orlando Marques de Paiva, 87, São Paulo 05508-900, Brazil; (R.D.C.); (A.J.D.F.); (M.B.G.); (C.S.A.-F.)
| | - Antonio J. Piantino Ferreira
- Department of Pathology, School of Veterinary Medicine, University of São Paulo, Av. Prof. Orlando Marques de Paiva, 87, São Paulo 05508-900, Brazil; (R.D.C.); (A.J.D.F.); (M.B.G.); (C.S.A.-F.)
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16
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Ky A, McCoy AJ, Flesher CG, Friend NE, Li J, Akinleye K, Patsalis C, Lumeng CN, Putnam AJ, O’Rourke RW. Matrix density regulates adipocyte phenotype. Adipocyte 2023; 12:2268261. [PMID: 37815174 PMCID: PMC10566443 DOI: 10.1080/21623945.2023.2268261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 08/22/2023] [Accepted: 09/29/2023] [Indexed: 10/11/2023] Open
Abstract
Alterations of the extracellular matrix contribute to adipose tissue dysfunction in metabolic disease. We studied the role of matrix density in regulating human adipocyte phenotype in a tunable hydrogel culture system. Lipid accumulation was maximal in intermediate hydrogel density of 5 weight %, relative to 3% and 10%. Adipogenesis and lipid and oxidative metabolic gene pathways were enriched in adipocytes in 5% relative to 3% hydrogels, while fibrotic gene pathways were enriched in 3% hydrogels. These data demonstrate that the intermediate density matrix promotes a more adipogenic, less fibrotic adipocyte phenotype geared towards increased lipid and aerobic metabolism. These observations contribute to a growing literature describing the role of matrix density in regulating adipose tissue function.
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Affiliation(s)
- Alexander Ky
- Department of Surgery, University of Michigan, Ann Arbor, MI, USA
| | - Atticus J. McCoy
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Carmen G. Flesher
- Department of Surgery, University of Michigan, Ann Arbor, MI, USA
- Graduate Program, University of Pennsylvania, Philadelphia, PA, USA
| | - Nicole E. Friend
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Jie Li
- Department of Surgery, University of Michigan, Ann Arbor, MI, USA
| | - Kore Akinleye
- Department of Surgery, University of Michigan, Ann Arbor, MI, USA
| | - Christopher Patsalis
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
- Department of Bioinformatics, University of Michigan, Ann Arbor, MI, USA
| | - Carey N. Lumeng
- Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, MI, USA
- Graduate Program in Immunology, University of Michigan, Ann Arbor, MI, USA
- Graduate Program in Cellular and Molecular Biology, University of Michigan, Ann Arbor, MI, USA
| | - Andrew J. Putnam
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Robert W. O’Rourke
- Department of Surgery, University of Michigan, Ann Arbor, MI, USA
- Department of Surgery, Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, MI, USA
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Liu Y, Zou D, Huang Q, Wang L. RB1 loss in the mesenchymal component of onychomatricoma. J Cutan Pathol 2023; 50:1094-1098. [PMID: 37596842 DOI: 10.1111/cup.14514] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 06/03/2023] [Revised: 07/31/2023] [Accepted: 08/08/2023] [Indexed: 08/20/2023]
Abstract
BACKGROUND Onychomatricoma is a nail neoplasm that usually presents as longitudinal nail plate thickening, involving either the partial or whole nail. Histopathologically, it is characterized by deep invaginations of the proliferating nail matrix and proliferation of CD34+ and CD10+ spindle cells with collagenous to myxoid stroma. Onychomatricoma has been considered a fibroepithelial neoplasm. Recently, RB1 loss has been verified using array comparative genomic hybridization. METHODS This study investigated the RB1 status in onychomatricoma with morphological methods. RESULTS Six patients with onychomatricoma were included in the study. RB1 status was assessed using immunohistochemical staining and fluorescence in situ hybridization. Immunohistochemical staining showed that all six cases experienced RB1 loss in the mesenchymal component of onychomatricoma but not in the proliferated nail matrix. Fluorescence in situ hybridization in five cases showed a monoallelic deletion of the RB1 locus in the mesenchymal component but not in the proliferated nail matrix. CONCLUSIONS RB1 loss was observed only in the mesenchymal component of onychomatricoma. Our findings suggest that the proliferated nail matrix in onychomatricoma represents reactive hyperplasia of various degrees secondary to neoplastic mesenchymal proliferation. This indicates that onychomatricoma should be recognized as an RB1-deleted soft tissue neoplasm rather than a fibroepithelial neoplasm.
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Affiliation(s)
- Yu Liu
- Department of Dermatology, Xijing Hospital, The Fourth Military Medical University, Xian, China
| | - Daopei Zou
- Department of Dermatology, Xijing Hospital, The Fourth Military Medical University, Xian, China
| | - Qiong Huang
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, China
| | - Lei Wang
- Department of Dermatology, Xijing Hospital, The Fourth Military Medical University, Xian, China
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18
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Cisterna B, Lofaro FD, Lacavalla MA, Boschi F, Malatesta M, Quaglino D, Zancanaro C, Boraldi F. Aged gastrocnemius muscle of mice positively responds to a late onset adapted physical training. Front Cell Dev Biol 2023; 11:1273309. [PMID: 38020923 PMCID: PMC10679468 DOI: 10.3389/fcell.2023.1273309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Accepted: 10/27/2023] [Indexed: 12/01/2023] Open
Abstract
Introduction: A regular physical training is known to contribute to preserve muscle mass and strength, maintaining structure and function of neural and vascular compartments and preventing muscle insulin resistance and inflammation. However, physical activity is progressively reduced during aging causing mobility limitations and poor quality of life. Although physical exercise for rehabilitation purposes (e.g., after fractures or cardiovascular events) or simply aiming to counteract the development of sarcopenia is frequently advised by physicians, nevertheless few data are available on the targets and the global effects on the muscle organ of adapted exercise especially if started at old age. Methods: To contribute answering this question for medical translational purposes, the proteomic profile of the gastrocnemius muscle was analyzed in 24-month-old mice undergoing adapted physical training on a treadmill for 12 weeks or kept under a sedentary lifestyle condition. Proteomic data were implemented by morphological and morphometrical ultrastructural evaluations. Results and Discussion: Data demonstrate that muscles can respond to adapted physical training started at old age, positively modulating their morphology and the proteomic profile fostering protective and saving mechanisms either involving the extracellular compartment as well as muscle cell components and pathways (i.e., mitochondrial processes, cytoplasmic translation pathways, chaperone-dependent protein refolding, regulation of skeletal muscle contraction). Therefore, this study provides important insights on the targets of adapted physical training, which can be regarded as suitable benchmarks for future in vivo studies further exploring the effects of this type of physical activity by functional/metabolic approaches.
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Affiliation(s)
- Barbara Cisterna
- Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
| | | | - Maria Assunta Lacavalla
- Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
| | - Federico Boschi
- Department of Computer Science, University of Verona, Verona, Italy
| | - Manuela Malatesta
- Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
| | - Daniela Quaglino
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Carlo Zancanaro
- Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
| | - Federica Boraldi
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
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Massey J, Zarnowski R, Andes D. Role of the extracellular matrix in Candida biofilm antifungal resistance. FEMS Microbiol Rev 2023; 47:fuad059. [PMID: 37816666 DOI: 10.1093/femsre/fuad059] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 09/17/2023] [Accepted: 10/09/2023] [Indexed: 10/12/2023] Open
Abstract
Clinical infection due to Candida species frequently involve growth in biofilm communities. Recalcitrance despite antifungal therapy leads to disease persistence associated with high morbidity and mortality. Candida possesses several tools allowing evasion of antifungal effects. Among these, protection of biofilm cells via encasement by the extracellular matrix is responsible for a majority drug resistance phenotype. The Candida matrix composition is complex and includes a mannan-glucan complex linked to antifungal drug sequestration. This mechanism of resistance is conserved across the Candida genus and impacts each of the available antifungal drug classes. The exosome pathway is responsible for delivery and assembly of much of the Candida extracellular matrix as functional vesicle protein and polysaccharide cargo. Investigations demonstrate the vesicle matrix delivery pathway is a useful fungal biofilm drug target. Further elucidation of the vesicle pathway, as well as understanding the roles of biofilm driven cargo may provide additional targets to aid the diagnosis, prevention, and treatment of Candida biofilms.
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Affiliation(s)
- Justin Massey
- Department of Medicine, University of Wisconsin-Madison, 1685 Highland Ave Madison WI 53705, Madison
| | - Robert Zarnowski
- Department of Medicine, University of Wisconsin-Madison, 1685 Highland Ave Madison WI 53705, Madison
| | - David Andes
- Department of Medicine, University of Wisconsin-Madison, 1685 Highland Ave Madison WI 53705, Madison
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, 1685 Highland Ave Madison WI 53705, Madison
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20
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Pan S, Erdmann M, Terrell J, Cabeen MT. A putative lipase affects Pseudomonas aeruginosa biofilm matrix production. mSphere 2023; 8:e0037423. [PMID: 37754547 PMCID: PMC10597414 DOI: 10.1128/msphere.00374-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 07/06/2023] [Accepted: 07/24/2023] [Indexed: 09/28/2023] Open
Abstract
Pseudomonas aeruginosa is an opportunistic pathogen that is widely known for infecting patients with underlying conditions. This species often survives antibiotic therapy by forming biofilms, in which the cells produce a protective extracellular matrix. P. aeruginosa also produces virulence factors that enhance its ability to cause disease. One signaling pathway that influences virulence is the nitrogen-related phosphotransferase system (Nitro-PTS), which consists of an initial phosphotransferase, PtsP, a phosphocarrier, PtsO, and a terminal phosphate receptor, PtsN. The physiological role of the Nitro-PTS in P. aeruginosa is poorly understood. However, PtsN, when deprived of its upstream phosphotransfer proteins, has an antagonistic effect on biofilm formation. We thus conducted a transposon mutagenesis screen in an unphosphorylated-PtsN (i.e., ∆ptsP) background to identify downstream proteins with unacknowledged roles in PtsN-mediated biofilm suppression. We found an unstudied gene, PA14_04030, whose disruption restored biofilm production. This gene encodes a predicted phospholipase with signature alpha/beta hydrolase folds and a lipase signature motif with an active-site Ser residue. Hence, we renamed the gene bipL, for biofilm-impacting phospholipase. Deletion of bipL in a ∆ptsP background increased biofilm formation, supporting the idea that BipL is responsible for reducing biofilm formation in strains with unphosphorylated PtsN. Moreover, substituting the putative catalytic Ser for Ala phenocopied bipL deletion, indicating that this residue is important for the biofilm-suppressive activity of BipL in vivo. As our preliminary data suggest that BipL is a lipase, we performed lipidomics to detect changes in the lipid profile due to bipL deletion and found changes in some lipid species. IMPORTANCE Biofilm formation by bacteria occurs when cells secrete an extracellular matrix that holds them together and shields them from environmental insults. Biofilms of bacterial opportunistic human pathogens such as Pseudomonas aeruginosa pose a substantial challenge to clinical antimicrobial therapy. Hence, a more complete knowledge about the bacterial factors that influence and regulate production of the biofilm matrix is one key to formulate more effective therapeutic strategies. In this study, we screen for factors that are important for reducing biofilm matrix production in certain genetic backgrounds. We unexpectedly found a gene encoding a putative lipase enzyme and showed that its predicted catalytic site is important for its ability to reduce biofilm formation. Our findings suggest that lipase enzymes have previously uncharacterized functions in biofilm matrix regulation.
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Affiliation(s)
- Somalisa Pan
- Department of Microbiology and Molecular Genetics, Oklahoma State University, Stillwater, Oklahoma, USA
| | - Mary Erdmann
- Department of Microbiology and Molecular Genetics, Oklahoma State University, Stillwater, Oklahoma, USA
| | - Julia Terrell
- Department of Microbiology and Molecular Genetics, Oklahoma State University, Stillwater, Oklahoma, USA
| | - Matthew T. Cabeen
- Department of Microbiology and Molecular Genetics, Oklahoma State University, Stillwater, Oklahoma, USA
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Logan R, Wehe AW, Woods DC, Tilly J, Khrapko K. Interpreting Sequence-Levenshtein distance for determining error type and frequency between two embedded sequences of equal length. ArXiv 2023:arXiv:2310.12833v1. [PMID: 37904736 PMCID: PMC10614987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/01/2023]
Abstract
Levenshtein distance is a commonly used edit distance metric, typically applied in language processing, and to a lesser extent, in molecular biology analysis. Biological nucleic acid sequences are often embedded in longer sequences and are subject to insertion and deletion errors that introduce frameshift during sequencing. These frameshift errors are due to string context and should not be counted as true biological errors. Sequence-Levenshtein distance is a modification to Levenshtein distance that is permissive of frameshift error without additional penalty. However, in a biological context Levenshtein distance needs to accommodate both frameshift and weighted errors, which Sequence-Levenshtein distance cannot do. Errors are weighted when they are associated with a numerical cost that corresponds to their frequency of appearance. Here, we describe a modification that allows the use of Levenshtein distance and Sequence-Levenshtein distance to appropriately accommodate penalty-free frameshift between embedded sequences and correctly weight specific error types.
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Affiliation(s)
- Robert Logan
- Science and Technology Division, Biology and Bioinformatics Department, Eastern Nazarene College, Quincy, MA 02170
| | - Amy Wangsness Wehe
- Health and Natural Sciences Division, Mathematics Department, Fitchburg State University, Fitch-burg, MA 01420-2697
| | - Dori C Woods
- College of Science, Department of Biology, Northeastern University, 330 Huntington Ave, Boston, MA 02115
| | - Jon Tilly
- College of Science, Department of Biology, Northeastern University, 330 Huntington Ave, Boston, MA 02115
| | - Konstantin Khrapko
- College of Science, Department of Biology, Northeastern University, 330 Huntington Ave, Boston, MA 02115
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22
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Chen S, Ding Y. A bibliography study of Shewanella oneidensis biofilm. FEMS Microbiol Ecol 2023; 99:fiad124. [PMID: 37796898 PMCID: PMC10630087 DOI: 10.1093/femsec/fiad124] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 07/17/2023] [Revised: 08/28/2023] [Accepted: 10/04/2023] [Indexed: 10/07/2023] Open
Abstract
This study employs a bibliography study method to evaluate 472 papers focused on Shewanella oneidensis biofilms. Biofilms, which are formed when microorganisms adhere to surfaces or interfaces, play a crucial role in various natural, engineered, and medical settings. Within biofilms, microorganisms are enclosed in extracellular polymeric substances (EPS), creating a stable working environment. This characteristic enhances the practicality of biofilm-based systems in natural bioreactors, as they are less susceptible to temperature and pH fluctuations compared to enzyme-based bioprocesses. Shewanella oneidensis, a nonpathogenic bacterium with the ability to transfer electrons, serves as an example of a species isolated from its environment that exhibits extensive biofilm applications. These applications, such as heavy metal removal, offer potential benefits for environmental engineering and human health. This paper presents a comprehensive examination and review of the biology and engineering aspects of Shewanella biofilms, providing valuable insights into their functionality.
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Affiliation(s)
- Shan Chen
- Department of Applied Social Sciences, The Hong Kong Polytechnic University, 11 Yuk Choi Rd, Hung Hom, Hong Kong, China
| | - Yuanzhao Ding
- School of Geography and the Environment, University of Oxford, South Parks Road, Oxford OX1 3QY, United Kingdom
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23
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Cygan-Bączek E, Cygan S, Wyżga P, Novák P, Lapčák L, Romański A. Improvement in Abrasive Wear Resistance of Metal Matrix Composites Used for Diamond-Impregnated Tools by Heat Treatment. Materials (Basel) 2023; 16:6198. [PMID: 37763475 PMCID: PMC10532835 DOI: 10.3390/ma16186198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 08/07/2023] [Accepted: 09/11/2023] [Indexed: 09/29/2023]
Abstract
This work presents the possibilities of producing a substitute for a commercial matrix material for sintered metal-diamond tools which is characterized by increased tribological properties required in machining natural stones and concrete. In this study, the improvement in wear behavior of sintered pre-alloyed matrix caused by a thermal treatment was investigated. Several mixtures made of commercially available powders were homogenized by ball milling and consolidated at 900 °C using the spark plasma sintering (SPS) method. During cooling down, the specimens were subjected to isothermal holding at 350 or 250 °C for 1 h. After consolidation, all specimens were tested for density and hardness, whereas selected specimens were characterized by scanning electron microscopy (SEM) and flexural strength tests. The specimens made of BDCM50 powder (a mixture of the base and pre-alloyed powders in 50:50 proportion) shows excellent properties including σ0.2 = 1045 MPa in the three-point bending test and HV10 ≈ 380. Resistance to abrasive wear evaluated in both three-body and two-body conditions in the MWT abrasion test was estimated at Ai3=18.1±3.9 μm/20 m and Ai2=95.9±11.8 μm/20 m, respectively. A series of diamond-impregnated specimens (segments) was also produced and tested for wear rate on abrasive concrete. The potential graphitization of the diamond grits was investigated using Raman spectroscopy and X-ray diffraction. As a reference, both the base Fe-Mn-Cu-Sn-C and commercially available Co+20%WC alloy were used to compare selected properties of the investigated materials. It has been proved that heat-treated specimens made of the base mixture modified with pre-alloyed powders are characterized by increased hardness and resistance to abrasive wear. The BDCM50 matrix has a negligible effect on diamond graphitization and shows excellent field performance, which makes it a good potential substitute for replacing Co+20%WC in sintered diamond-impregnated tools.
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Affiliation(s)
- Elżbieta Cygan-Bączek
- Łukasiewicz Research Network—Krakow Institute of Technology, Zakopiańska 73 Str., 30-418 Krakow, Poland
| | - Sławomir Cygan
- Łukasiewicz Research Network—Krakow Institute of Technology, Zakopiańska 73 Str., 30-418 Krakow, Poland
| | - Piotr Wyżga
- Łukasiewicz Research Network—Krakow Institute of Technology, Zakopiańska 73 Str., 30-418 Krakow, Poland
| | - Pavel Novák
- Department of Metals and Corrosion Engineering, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic
| | - Ladislav Lapčák
- Central Laboratories, University of Chemistry and Technology Prague, Technicka 5, 166 28 Prague, Czech Republic
| | - Andrzej Romański
- Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, 30 Mickiewicz Avenue, 30-059 Krakow, Poland;
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Ling S, Kwak D, Kim KK. Inhibition of discoidin domain receptor 2 reveals kinase-dependent and kinase-independent functions in regulating fibroblast activity. Am J Physiol Lung Cell Mol Physiol 2023; 325:L342-L351. [PMID: 37489274 PMCID: PMC10625828 DOI: 10.1152/ajplung.00066.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 02/24/2023] [Revised: 06/16/2023] [Accepted: 07/11/2023] [Indexed: 07/26/2023] Open
Abstract
Progressive pulmonary fibrosis is a devastating condition and current treatment is suboptimal. There has been considerable interest in the role of tyrosine kinase signaling as mediators of pro- and antifibrotic processes. Nintedanib is a nonspecific tyrosine kinase that has been shown to have therapeutic benefit in lung fibrosis. However, the precise mechanism of action remains unclear because nintedanib inhibits several tyrosine kinases, which are often expressed on multiple cell types with different activities during fibrosis. Discoidin domain receptor 2 (DDR2) has been suggested as a potential target of nintedanib. DDR2 is a receptor tyrosine kinase that is activated by fibrillar collagens such as type I collagen. DDR2 is primarily expressed by fibroblasts. The effectiveness of specifically targeting DDR2 signaling during fibrosis remains undefined. In the present study, we show that nintedanib acts as a direct and indirect inhibitor of DDR2. We then utilize a novel allosteric inhibitor of DDR2, WRG-28, which blocks ligand binding and activation of DDR2. We find that WRG-28 augments fibroblast apoptosis and attenuates fibrosis. Finally, we show that fibroblast type I collagen autocrine signaling is regulated by DDR2 through both kinase-dependent and kinase-independent functions of DDR2. These findings highlight the importance of type I collagen autocrine signaling by fibroblasts during fibrosis and demonstrate that DDR2 has a central role in this pathway making it a potential therapeutic target.NEW & NOTEWORTHY Type I collagen is a major component of fibrosis and can signal through cell surface receptors such as discoidin domain receptor 2 (DDR2). DDR2 activation can lead to further collagen deposition by fibroblasts setting up a profibrotic positive feedback loop. In this report, we find that inhibition of DDR2 with nintedanib or a specific DDR2 inhibitor, WRG-28, can disrupt this cycle and prevent fibrosis through augmented fibroblast apoptosis and inhibited activation.
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Affiliation(s)
- Song Ling
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, United States
| | - Doyun Kwak
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, United States
| | - Kevin K Kim
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, United States
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N N, Sandeep A H, Bhandari S, Solete P, Choudhari S. Comparative Analysis of the Surface Roughness of Class V Composite Restorations Using a Conventional Polishing System and Pre-contoured Cervical Matrices: An In Vitro Study. Cureus 2023; 15:e45901. [PMID: 37885495 PMCID: PMC10599089 DOI: 10.7759/cureus.45901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 09/25/2023] [Indexed: 10/28/2023] Open
Abstract
BACKGROUND Rough surfaces of restorations have an impact on the accumulation of plaque, unaesthetic contour, and marginal adaptation, thereby affecting their functional, aesthetic, and clinical performance and the long-term stability of the restoration. Several polishing systems are currently in use for composite restorations, but information on their impact on surface roughness is limited. The present study aimed to determine the surface roughness of class V composite restorations polished using pre-contoured cervical matrices and to compare it with a conventional disc polishing system. MATERIALS AND METHODS Twenty maxillary anterior teeth were collected and used in the study. Class V cavity preparation was done, and the cavities were restored with two types of composites (microhybrid and nanohybrid) from commercially available brands (Ivoclar and Dentsply) and finished and polished using two polishing systems (super-snap and pre-contoured cervical matrices). The evaluation of surface roughness was done using an atomic force microscope (AFM). RESULTS The surface roughness parameters (Ra-arithmetic mean/average line roughness and Sa-average surface roughness) of the class V cavities restored using pre-contoured cervical matrices were significantly lower for both the tested resin composites. CONCLUSION The surface roughness of Class V cavities restored using pre-contoured cervical matrix systems was significantly less for both microhybrid and nanohybrid composites.
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Affiliation(s)
- Neha N
- Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - Hima Sandeep A
- Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - Sarita Bhandari
- Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - Pradeep Solete
- Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - Sahil Choudhari
- Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
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Aw NMY, Thong JF, Tan BYB, Tan VYJ. Managing cholesteatomas with labyrinthine fistula. Singapore Med J 2023:384049. [PMID: 37675676 DOI: 10.4103/singaporemedj.smj-2021-377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
Introduction A retrospective study (2011 to 2018) was conducted to evaluate the management of cholesteatomas with labyrinthine fistulae (LFs), clinical characteristics and postoperative hearing outcomes in a hospital. Methods Demographic data of patients with primary middle ear mastoidectomies for cholesteatoma were extracted. Preoperative high-resolution computed tomography (HRCT) temporal bone and intraoperative findings, and hearing levels preoperatively and postoperatively were evaluated. Results Of the middle ear cholesteatomas, 15.6% (n = 14) of ears were complicated by LF. HRCT scans showed 92.9% sensitivity and 94.7% specificity in the identification of LFs. Intraoperative findings of LFs include stapes erosion (78.6%), malleus erosion (78.6%), incus erosion (92.9%), dehiscence of tegmen tympani (28.6%) and tympanic facial canal (64.3%). Compared to the non-LF group, the LF group showed significantly higher incidence of stapes erosion (P < 0.001), tegmen tympani dehiscence (P = 0.016) and semicircular canal dehiscence (P < 0.001). Matrix was removed completely in 85.7% (n = 12) and was left behind in 14.3% (n = 2) of ears. Also, 21.5% (n = 3) had preoperative dead ears. Postoperative hearing results had a mean follow-up time of 2.1 (standard deviation 1.5, range 0.14-4.84) years. In the matrix removal group (n = 9), 77.9% had unchanged hearing levels, 11.1% showed improvement and 11.1% showed decrease in hearing levels. The matrix preservation group (n = 2) had deteriorated hearing levels. Conclusion Preservation of hearing in LFs is possible with cautious matrix removal. Despite matrix preservation to preserve hearing in large LFs, our patients' hearing deteriorated postoperatively. Longer follow-up of hearing with matrix preservation may show poorer hearing outcomes.
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Affiliation(s)
| | - Jiun Fong Thong
- Department of Otorhinolaryngology - Head and Neck Surgery, Singapore General Hospital, Singapore
| | - Barrie Yau Boon Tan
- Department of Otorhinolaryngology - Head and Neck Surgery, Singapore General Hospital; Barrie Tan ENT Head and Neck Surgery, Gleneagles Hospital, Singapore
| | - Vanessa Yee Jueen Tan
- Department of Otorhinolaryngology - Head and Neck Surgery, Singapore General Hospital, Singapore
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Chen K, Li L, Li P. Hadamard Transform Ion Mobility Spectrometry Based on Matrix Encoding Modulation. Sensors (Basel) 2023; 23:6267. [PMID: 37514561 PMCID: PMC10383960 DOI: 10.3390/s23146267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 07/01/2023] [Accepted: 07/06/2023] [Indexed: 07/30/2023]
Abstract
Ion mobility spectrometry (IMS) has been widely used for the on-site detection of trace chemicals, but continue to suffer from a low duty cycle of ion injection. The Hadamard transform ion mobility spectrometry (HT-IMS) technique was employed to address the problem with increased signal-to-noise ratio (SNR). However, in this work, through simulation, a certain deviation between the mathematical principle of Hadamard transform and actual data collection process was found, which resulted in a distortion of the baseline in the spectrum. The reason behind this problem was analyzed and a novel IMS based on Sylvester-type Hadamard matrix encoding modulation (Sylvester-HT-IMS), together with a set of date collection and processing technique, was proposed. Sylvester-HT-IMS offered much improved quality of deconvoluted spectrum and overall performance in the simulation. In experimental verification, with reactant ions and product ions characterized, Sylvester-HT-IMS showed improved SNR and ion discrimination over both conventional signal-averaged IMS (SA-IMS) and HT-IMS, providing an alternative method for multiplexed IMS.
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Affiliation(s)
- Ke Chen
- School of Electronic and Information Engineering, Soochow University, Suzhou 215006, China
| | - Lingfeng Li
- School of Electronic and Information Engineering, Soochow University, Suzhou 215006, China
| | - Peng Li
- School of Electronic and Information Engineering, Soochow University, Suzhou 215006, China
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28
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Shagidulin M, Onishchenko N, Sevastianov V, Krasheninnikov M, Lyundup A, Nikolskaya A, Kryzhanovskaya A, Voznesenskaia S, Gorelova M, Perova N, Kozlov I, Venediktov A, Piavchenko G, Gautier S. Experimental Correction and Treatment of Chronic Liver Failure Using Implantable Cell-Engineering Constructs of the Auxiliary Liver Based on a Bioactive Heterogeneous Biopolymer Hydrogel. Gels 2023; 9:456. [PMID: 37367127 DOI: 10.3390/gels9060456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/18/2023] [Accepted: 05/25/2023] [Indexed: 06/28/2023] Open
Abstract
Our study sought approaches for chronic liver failure (CLF) treatment and correction via cell-engineered constructs (CECs). They are built from biopolymer-based, microstructured, and collagen-containing hydrogel (BMCG). We also strove to evaluate the functional activity of BMCG in liver regeneration. MATERIALS AND METHODS Allogeneic liver cells (namely, hepatocytes; LC) together with mesenchymal multipotent stem cells of bone marrow origin (MMSC BM; BMSCs) were adhered to our BMCG to compose implanted liver CECs. Thereafter, we investigated a model of CLF in rats receiving the implanted CECs. The CLF had been provoked by long-term exposure to carbon tetrachloride. The study comprised male Wistar rats (n = 120) randomized into 3 groups: Group 1 was a control group with the saline treatment of the hepatic parenchyma (n = 40); Group 2 received BMCG only (n = 40); and Group 3 was loaded with CECs implanted into the parenchyma of their livers (n = 40). August rats (n = 30) made up a donor population for LCs and MMSC BM to develop grafts for animals from Group 3. The study length was 90 days. RESULTS CECs were shown to affect both biochemical test values and morphological parameters in rats with CLF. CONCLUSION We found BMCG-derived CECs to be operational and active, with regenerative potential. Group 3 showed significant evidence of forced liver regeneration that tended to persist until the end of the study (day 90). The phenomenon is reflected by biochemical signs of hepatic functional recovery by day 30 after grafting (compared to Groups 1 and 2), whereas structural features of liver repair (necrosis prevention, missing formation of vacuoles, degenerating LC number decrease, and delay of hepatic fibrotic transformation). Such implantation of BMCG-derived CECs with allogeneic LCs and MMSC BM might represent a proper option to correct and treat CLF, as well as to maintain affected liver function in patients with liver grafting needed.
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Affiliation(s)
- Murat Shagidulin
- Federal State Budgetary Institution "Shumakov National Medical Research Centre of Transplantology and Artificial Organs" of the Ministry of Health of the Russian Federation, 123182 Moscow, Russia
- Federal State Autonomous Educational Institution of Higher Education, "I.M. Sechenov First Moscow State Medical University" of the Ministry of Health of the Russian Federation (Sechenov University), 119435 Moscow, Russia
| | - Nina Onishchenko
- Federal State Budgetary Institution "Shumakov National Medical Research Centre of Transplantology and Artificial Organs" of the Ministry of Health of the Russian Federation, 123182 Moscow, Russia
| | - Victor Sevastianov
- Federal State Budgetary Institution "Shumakov National Medical Research Centre of Transplantology and Artificial Organs" of the Ministry of Health of the Russian Federation, 123182 Moscow, Russia
| | - Mikhail Krasheninnikov
- Research and Education Resource Centre for Cellular Technologies, Peoples' Friendship University of Russia (RUDN University), 117198 Moscow, Russia
- M.V. Lomonosov Moscow State Academy of Fine Chemical Technology (MITKhT), 119571 Moscow, Russia
| | - Aleksey Lyundup
- Research and Education Resource Centre for Cellular Technologies, Peoples' Friendship University of Russia (RUDN University), 117198 Moscow, Russia
| | - Alla Nikolskaya
- Federal State Budgetary Institution "Shumakov National Medical Research Centre of Transplantology and Artificial Organs" of the Ministry of Health of the Russian Federation, 123182 Moscow, Russia
| | - Alena Kryzhanovskaya
- Federal State Autonomous Educational Institution of Higher Education, "I.M. Sechenov First Moscow State Medical University" of the Ministry of Health of the Russian Federation (Sechenov University), 119435 Moscow, Russia
| | - Sofia Voznesenskaia
- Federal State Autonomous Educational Institution of Higher Education, "I.M. Sechenov First Moscow State Medical University" of the Ministry of Health of the Russian Federation (Sechenov University), 119435 Moscow, Russia
| | - Mariia Gorelova
- Federal State Autonomous Educational Institution of Higher Education, "I.M. Sechenov First Moscow State Medical University" of the Ministry of Health of the Russian Federation (Sechenov University), 119435 Moscow, Russia
| | - Nadezhda Perova
- ANO "Institute Biomedical Research and Technology", 123557 Moscow, Russia
| | - Igor Kozlov
- Federal State Autonomous Educational Institution of Higher Education, "I.M. Sechenov First Moscow State Medical University" of the Ministry of Health of the Russian Federation (Sechenov University), 119435 Moscow, Russia
| | - Artem Venediktov
- Federal State Autonomous Educational Institution of Higher Education, "I.M. Sechenov First Moscow State Medical University" of the Ministry of Health of the Russian Federation (Sechenov University), 119435 Moscow, Russia
| | - Gennadii Piavchenko
- Federal State Autonomous Educational Institution of Higher Education, "I.M. Sechenov First Moscow State Medical University" of the Ministry of Health of the Russian Federation (Sechenov University), 119435 Moscow, Russia
| | - Sergey Gautier
- Federal State Budgetary Institution "Shumakov National Medical Research Centre of Transplantology and Artificial Organs" of the Ministry of Health of the Russian Federation, 123182 Moscow, Russia
- Federal State Autonomous Educational Institution of Higher Education, "I.M. Sechenov First Moscow State Medical University" of the Ministry of Health of the Russian Federation (Sechenov University), 119435 Moscow, Russia
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Raven JA. Avoiding and allowing apatite precipitation in oxygenic photolithotrophs. New Phytol 2023; 238:1801-1812. [PMID: 36856343 DOI: 10.1111/nph.18849] [Citation(s) in RCA: 0] [Impact Index Per Article: 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] [Received: 12/06/2022] [Accepted: 02/24/2023] [Indexed: 05/04/2023]
Abstract
The essential elements Ca and P, taken up and used metabolically as Ca2+ and H2 PO4 - /HPO4 2- respectively, could precipitate as one or more of the insoluble forms calcium phosphate (mainly apatite) if the free ion concentrations and pH are high enough. In the cytosol, chloroplast stroma, and mitochondrial matrix, the very low free Ca2+ concentration avoids calcium phosphate precipitation, apart from occasionally in the mitochondrial matrix. The low free Ca2+ concentration in these compartments is commonly thought of in terms of the role of Ca2+ in signalling. However, it also helps avoids calcium phosphate precipitation, and this could be its earliest function in evolution. In vacuoles, cell walls, and xylem conduits, there can be relatively high concentrations of Ca2+ and inorganic orthophosphate, but pH and/or other ligands for Ca2+ , suggests that calcium phosphate precipitates are rare. However, apatite is precipitated under metabolic control in shoot trichomes, and by evaporative water loss in hydathodes, in some terrestrial flowering plants. In aquatic macrophytes that deposit CaCO3 on their cell walls or in their environment as a result of pH increase or removal of inhibitors of nucleation or crystal growth, phosphate is sometimes incorporated in the CaCO3 . Calcium phosphate precipitation also occurs in some stromatolites.
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Affiliation(s)
- John A Raven
- Division of Plant Science, University of Dundee at the James Hutton Institute, Invergowrie, Dundee, DD2 5DA, UK
- Climate Change Cluster, Faculty of Science, University of Technology, Sydney, Ultimo, NSW, 2007, Australia
- School of Biological Sciences, University of Western Australia, Crawley, WA, 6009, Australia
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Witte MB, Saupe J, Reiner J, Bannert K, Schafmayer C, Lamprecht G, Berlin P. Ileocolonic Healing after Small Ileocecal Resection in Mice: NOD2 Deficiency Impairs Anastomotic Healing by Local Mechanisms. J Clin Med 2023; 12:3601. [PMID: 37240707 PMCID: PMC10219437 DOI: 10.3390/jcm12103601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 05/12/2023] [Accepted: 05/18/2023] [Indexed: 05/28/2023] Open
Abstract
Ileocecal resection (ICR) is frequently performed in Crohn's disease (CD). NOD2 mutations are risk factors for CD. Nod2 knockout (ko) mice show impaired anastomotic healing after extended ICR. We further investigated the role of NOD2 after limited ICR. C57B16/J (wt) and Nod2 ko littermates underwent limited ICR including 1-2 cm terminal ileum and were randomly assigned to vehicle or MDP treatment. Bursting pressure was measured on POD 5, and the anastomosis was analyzed for matrix turn-over and granulation tissue. Wound fibroblasts from subcutaneously implanted sponges were used for comparison. The M1/M2 macrophage plasma cytokines were analyzed. Mortality was not different between groups. Bursting pressure was significantly decreased in ko mice. This was associated with less granulation tissue but was not affected by MDP. However, anastomotic leak (AL) rate tended to be lower in MDP-treated ko mice (29% vs. 11%, p = 0.07). mRNA expression of collagen-1α (col1 α), collagen-3α (col3 α), matrix metalloproteinase (mmp)2 and mmp9 was increased in ko mice, indicating increased matrix turn-over, specifically in the anastomosis. Systemic TNF-α expression was significantly lower in ko mice. Ileocolonic healing is impaired in Nod2 ko mice after limited ICR by local mechanisms maybe including local dysbiosis.
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Affiliation(s)
- Maria B. Witte
- Department of General, Visceral, Thoracic, Vascular and Transplant Surgery, Rostock University Medical Center, Schillingallee 35, 18057 Rostock, Germany
| | - Johannes Saupe
- Division of Gastroenterology and Endocrinology, Department of Medicine II, Rostock University Medical Center, Ernst-Heydemann-Strasse 6, 18057 Rostock, Germany
| | - Johannes Reiner
- Division of Gastroenterology and Endocrinology, Department of Medicine II, Rostock University Medical Center, Ernst-Heydemann-Strasse 6, 18057 Rostock, Germany
| | - Karen Bannert
- Division of Gastroenterology and Endocrinology, Department of Medicine II, Rostock University Medical Center, Ernst-Heydemann-Strasse 6, 18057 Rostock, Germany
| | - Clemens Schafmayer
- Department of General, Visceral, Thoracic, Vascular and Transplant Surgery, Rostock University Medical Center, Schillingallee 35, 18057 Rostock, Germany
| | - Georg Lamprecht
- Division of Gastroenterology and Endocrinology, Department of Medicine II, Rostock University Medical Center, Ernst-Heydemann-Strasse 6, 18057 Rostock, Germany
| | - Peggy Berlin
- Division of Gastroenterology and Endocrinology, Department of Medicine II, Rostock University Medical Center, Ernst-Heydemann-Strasse 6, 18057 Rostock, Germany
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Lin Y, Chen M, Wang D, Yu Y, Chen R, Zhang M, Yu H, Huang X, Rao M, Wang Y, Li Y, Yan J, Yin P. Multi-Proteomic Analysis Reveals the Effect of Protein Lactylation on Matrix and Cholesterol Metabolism in Tendinopathy. J Proteome Res 2023. [PMID: 37159428 DOI: 10.1021/acs.jproteome.2c00756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Tendinopathy is a disease with surging prevalence. Lacking understanding of molecular mechanisms impedes the development of therapeutic approaches and agents. Lysine lactylation (Kla) is a newly discovered post-translational modification related to glycolysis. It has long been noted that manipulation of glycolysis metabolism could affect tendon cell function, tendon homeostasis, and healing process of tendon. However, protein lactylation sites in tendinopathy remain unexplored. Here, we conducted the first proteome-wide Kla analysis in tendon samples harvested from patients with rotator cuff tendinopathy (RCT), which identified 872 Kla sites across 284 proteins. Compared with normal counterparts, 136 Kla sites on 77 proteins were identified as upregulated in the pathological tendon, while 56 sites on 32 proteins were downregulated. Function enrichment analysis demonstrated that the majority of proteins with upregulated Kla levels functioned in organization of the tendon matrix and cholesterol metabolism, accompanied by lower expression levels which meant impaired cholesterol metabolism and degeneration of the tendon matrix, indicating potential cross-talk between protein lactylation and expression levels. At last, by western blotting and immunofluorescence, we verified the correlation between high lactylation and the downregulation of matrix and cholesterol-related proteins including BGN, MYL3, TPM3, and APOC3. ProteomeXchange: PXD033146.
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Affiliation(s)
- Yuan Lin
- Department of Orthopedics, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, China
| | - Ming Chen
- Department of Orthopedics, The Fourth Medical Centre, Chinese PLA General Hospital, Beijing 100037, China
| | - Duanyang Wang
- Department of Orthopedics, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, China
| | - Yang Yu
- Clinical Office, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, China
| | - Ruijing Chen
- Department of Orthopedics, The Fourth Medical Centre, Chinese PLA General Hospital, Beijing 100037, China
| | - Mingming Zhang
- Department of Orthopedics, The Fourth Medical Centre, Chinese PLA General Hospital, Beijing 100037, China
| | - Haikuan Yu
- Department of Orthopedics, The Fourth Medical Centre, Chinese PLA General Hospital, Beijing 100037, China
| | - Xiang Huang
- Department of Orthopedics, The Fourth Medical Centre, Chinese PLA General Hospital, Beijing 100037, China
| | - Man Rao
- Department of Orthopedics, The Fourth Medical Centre, Chinese PLA General Hospital, Beijing 100037, China
- National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing 100037, China
| | - Yezhou Wang
- School of Medicine, Shanghai Tenth People's Hospital, Tongji University, Shanghai 200072, China
| | - Yi Li
- Department of Orthopedics, The Fourth Medical Centre, Chinese PLA General Hospital, Beijing 100037, China
- National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing 100037, China
| | - Jinglong Yan
- Department of Orthopedics, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, China
| | - Pengbin Yin
- Department of Orthopedics, The Fourth Medical Centre, Chinese PLA General Hospital, Beijing 100037, China
- National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing 100037, China
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Das R, Harper L, Kitajima K, Osman TAH, Cimpan MR, Johannssen AC, Suliman S, Mackenzie IC, Costea DE. Embryonic Stem Cells Can Generate Oral Epithelia under Matrix Instruction. Int J Mol Sci 2023; 24:ijms24097694. [PMID: 37175400 PMCID: PMC10177836 DOI: 10.3390/ijms24097694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 04/06/2023] [Accepted: 04/09/2023] [Indexed: 05/15/2023] Open
Abstract
We aimed to investigate whether molecular clues from the extracellular matrix (ECM) can induce oral epithelial differentiation of pluripotent stem cells. Mouse embryonic stem cells (ESC) of the feeder-independent cell line E14 were used as a model for pluripotent stem cells. They were first grown in 2D on various matrices in media containing vitamin C and without leukemia inhibitory factor (LIF). Matrices investigated were gelatin, laminin, and extracellular matrices (ECM) synthesized by primary normal oral fibroblasts and keratinocytes in culture. Differentiation into epithelial lineages was assessed by light microscopy, immunocytochemistry, and flow cytometry for cytokeratins and stem cell markers. ESC grown in 2D on various matrices were afterwards grown in 3D organotypic cultures with or without oral fibroblasts in the collagen matrix and examined histologically and by immunohistochemistry for epithelial (keratin pairs 1/10 and 4/13 to distinguish epidermal from oral epithelia and keratins 8,18,19 to phenotype simple epithelia) and mesenchymal (vimentin) phenotypes. ECM synthesized by either oral fibroblasts or keratinocytes was able to induce, in 2D cultures, the expression of cytokeratins of the stratified epithelial phenotype. When grown in 3D, all ESC developed into two morphologically distinct cell populations on collagen gels: (i) epithelial-like cells organized in islands with occasional cyst- or duct-like structures and (ii) spindle-shaped cells suggestive of mesenchymal differentiation. The 3D culture on oral fibroblast-populated collagen matrices was necessary for further differentiation into oral epithelia. Only ESC initially grown on 2D keratinocyte or fibroblast-synthesized matrices reached full epithelial maturation. In conclusion, ESC can generate oral epithelia under matrix instruction.
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Affiliation(s)
- Ridhima Das
- Gade Laboratory for Pathology and Center for Cancer Biomarkers CCBIO, Institute for Clinical Medicine, University of Bergen, 5020 Bergen, Norway
| | - Lisa Harper
- Institute for Cell and Molecular Science, Queen Mary University of London, London E1 4NS, UK
| | - Kayoko Kitajima
- Department of Endodontics, The Nippon Dental University School of Life Dentistry at Niigata, Niigata 951-8580, Japan
| | | | | | - Anne Chr Johannssen
- Gade Laboratory for Pathology and Center for Cancer Biomarkers CCBIO, Institute for Clinical Medicine, University of Bergen, 5020 Bergen, Norway
- Department of Pathology, Haukeland University Hospital, 5021 Bergen, Norway
| | - Salwa Suliman
- Department of Clinical Dentistry, University of Bergen, 5020 Bergen, Norway
| | - Ian C Mackenzie
- Institute for Cell and Molecular Science, Queen Mary University of London, London E1 4NS, UK
| | - Daniela-Elena Costea
- Gade Laboratory for Pathology and Center for Cancer Biomarkers CCBIO, Institute for Clinical Medicine, University of Bergen, 5020 Bergen, Norway
- Department of Pathology, Haukeland University Hospital, 5021 Bergen, Norway
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Zhang X, Cao D, Xu L, Xu Y, Gao Z, Pan Y, Jiang M, Wei Y, Wang L, Liao Y, Wang Q, Yang L, Xu X, Gao Y, Gao S, Wang J, Yue R. Harnessing matrix stiffness to engineer a bone marrow niche for hematopoietic stem cell rejuvenation. Cell Stem Cell 2023; 30:378-395.e8. [PMID: 37028404 DOI: 10.1016/j.stem.2023.03.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 11/23/2022] [Accepted: 03/08/2023] [Indexed: 04/09/2023]
Abstract
Hematopoietic stem cell (HSC) self-renewal and aging are tightly regulated by paracrine factors from the bone marrow niche. However, whether HSC rejuvenation could be achieved by engineering a bone marrow niche ex vivo remains unknown. Here, we show that matrix stiffness fine-tunes HSC niche factor expression by bone marrow stromal cells (BMSCs). Increased stiffness activates Yap/Taz signaling to promote BMSC expansion upon 2D culture, which is largely reversed by 3D culture in soft gelatin methacrylate hydrogels. Notably, 3D co-culture with BMSCs promotes HSC maintenance and lymphopoiesis, reverses aging hallmarks of HSCs, and restores their long-term multilineage reconstitution capacity. In situ atomic force microscopy analysis reveals that mouse bone marrow stiffens with age, which correlates with a compromised HSC niche. Taken together, this study highlights the biomechanical regulation of the HSC niche by BMSCs, which could be harnessed to engineer a soft bone marrow niche for HSC rejuvenation.
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Affiliation(s)
- Xiaoying Zhang
- Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Dandan Cao
- Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Liting Xu
- Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Yanhua Xu
- Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China; Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Zehua Gao
- The State Key Laboratory of Bioreactor Engineering, Engineering Research Center for Biomedical Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China
| | - Yuanzhong Pan
- The State Key Laboratory of Bioreactor Engineering, Engineering Research Center for Biomedical Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China
| | - Ming Jiang
- The State Key Laboratory of Bioreactor Engineering, Engineering Research Center for Biomedical Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China
| | - Yuhui Wei
- The Interdisciplinary Research Center, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Lihua Wang
- The Interdisciplinary Research Center, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Yue Liao
- School of Chemical Science and Engineering, Tongji University, Shanghai 200092, China
| | - Qigang Wang
- School of Chemical Science and Engineering, Tongji University, Shanghai 200092, China
| | - Lei Yang
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Xiaocui Xu
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Yawei Gao
- Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China; Shanghai Institute of Stem Cell Research and Clinical Translation, Shanghai 200120, China
| | - Shaorong Gao
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Jing Wang
- The State Key Laboratory of Bioreactor Engineering, Engineering Research Center for Biomedical Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China
| | - Rui Yue
- Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China; Shanghai Institute of Stem Cell Research and Clinical Translation, Shanghai 200120, China.
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Urkande NK, Mankar N, Nikhade PP, Chandak M, Ikhar A, Patel A. Anterior Matrix Systems for Composite Restorations: A Review. Cureus 2023; 15:e37145. [PMID: 37168162 PMCID: PMC10166279 DOI: 10.7759/cureus.37145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 04/01/2023] [Indexed: 05/13/2023] Open
Abstract
In the field of restorative dentistry, composite resins have emerged as the most utilized materials. They revolutionized the cosmetic approach to anterior tooth treatment since their introduction to dental practice. In cases where one or more of the tooth's walls are absent, matrices are employed to assist in the creation of the proper anatomic contour and proximal contacts without the occurrence of gingival overhangs. Matrices come in a variety of designs suitable for various therapeutic conditions. Depending on the level of tooth destruction, they might range from a simple metal or plastic strip to a circumferential ring of metal surrounding the entire crown. Although the handling characteristics of modern composites have significantly improved, dentists still encounter challenges with the development of good interproximal contact and proper anatomical contour. The utilization of an anterior matrix system can be paramount in achieving these objectives.
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Affiliation(s)
- Neha K Urkande
- Department of Conservative Dentistry and Endodontics, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Medical Sciences, Wardha, IND
| | - Nikhil Mankar
- Department of Conservative Dentistry and Endodontics, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Medical Sciences, Wardha, IND
| | - Pradnya P Nikhade
- Department of Conservative Dentistry and Endodontics, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Medical Sciences, Wardha, IND
| | - Manoj Chandak
- Department of Conservative Dentistry and Endodontics, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Medical Sciences, Wardha, IND
| | - Anuja Ikhar
- Department of Conservative Dentistry and Endodontics, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Medical Sciences, Wardha, IND
| | - Aditya Patel
- Department of Conservative Dentistry and Endodontics, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Medical Sciences, Wardha, IND
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Hachenberger YU, Rosenkranz D, Kromer C, Krause BC, Dreiack N, Kriegel FL, Koz’menko E, Jungnickel H, Tentschert J, Bierkandt FS, Laux P, Panne U, Luch A. Nanomaterial Characterization in Complex Media-Guidance and Application. Nanomaterials (Basel) 2023; 13:922. [PMID: 36903800 PMCID: PMC10005142 DOI: 10.3390/nano13050922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 02/25/2023] [Accepted: 02/28/2023] [Indexed: 06/18/2023]
Abstract
A broad range of inorganic nanoparticles (NPs) and their dissolved ions possess a possible toxicological risk for human health and the environment. Reliable and robust measurements of dissolution effects may be influenced by the sample matrix, which challenges the analytical method of choice. In this study, CuO NPs were investigated in several dissolution experiments. Two analytical techniques (dynamic light scattering (DLS) and inductively-coupled plasma mass spectrometry (ICP-MS)) were used to characterize NPs (size distribution curves) time-dependently in different complex matrices (e.g., artificial lung lining fluids and cell culture media). The advantages and challenges of each analytical approach are evaluated and discussed. Additionally, a direct-injection single particle (DI sp)ICP-MS technique for assessing the size distribution curve of the dissolved particles was developed and evaluated. The DI technique provides a sensitive response even at low concentrations without any dilution of the complex sample matrix. These experiments were further enhanced with an automated data evaluation procedure to objectively distinguish between ionic and NP events. With this approach, a fast and reproducible determination of inorganic NPs and ionic backgrounds can be achieved. This study can serve as guidance when choosing the optimal analytical method for NP characterization and for the determination of the origin of an adverse effect in NP toxicity.
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Affiliation(s)
- Yves Uwe Hachenberger
- Department of Chemical & Product Safety, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589 Berlin, Germany
| | - Daniel Rosenkranz
- Institute for Clinical Chemistry and Laboratory Medicin, Klinikum Oldenburg AöR, Rahel-Straus-Straße 10, 26133 Oldenburg, Germany
| | - Charlotte Kromer
- Department of Chemical & Product Safety, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589 Berlin, Germany
| | - Benjamin Christoph Krause
- Department of Chemical & Product Safety, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589 Berlin, Germany
| | - Nadine Dreiack
- Department of Chemical & Product Safety, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589 Berlin, Germany
| | - Fabian Lukas Kriegel
- Department of Chemical & Product Safety, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589 Berlin, Germany
| | - Ekaterina Koz’menko
- Department of Chemical & Product Safety, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589 Berlin, Germany
| | - Harald Jungnickel
- Department of Chemical & Product Safety, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589 Berlin, Germany
| | - Jutta Tentschert
- Department of Chemical & Product Safety, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589 Berlin, Germany
| | - Frank Stefan Bierkandt
- Department of Chemical & Product Safety, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589 Berlin, Germany
| | - Peter Laux
- Department of Chemical & Product Safety, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589 Berlin, Germany
| | - Ulrich Panne
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstätter-Strasse 11, 12489 Berlin, Germany
| | - Andreas Luch
- Department of Chemical & Product Safety, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589 Berlin, Germany
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Zhao LH, Zhang W, Fan RY, Su SL, Shang EX, Qian DW, Duan JA. [Preparation of Huoluo Xiaoling gel plaster and its transdermal penetration in vitro]. Zhongguo Zhong Yao Za Zhi 2023; 48:1238-1248. [PMID: 37005808 DOI: 10.19540/j.cnki.cjcmm.20221201.301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
Abstract
Huoluo Xiaoling Dan is a classical prescription commonly used for blood circulation and pain relief in clinic with obvious effects. To make it directly treat lesion and improve the effect, this research optimized the preparation process of Huoluo Xiaoling gel paste and further evaluated its in vitro transdermal absorption performance, so as to provide a scientific basis for its development and utilization. Using primary viscosity, holding viscosity, and sensory score as evaluation indexes, the matrix amount of gel paste was determined by the single factor test and Box-Behnken response surface method. The ultra-performance liquid chromatography(UPLC) method was established to determine the content of eight active ingredients, including Danshensu, ferulic acid, salvianolic acid B, salvianolic acid A, ligustilide, tanshinone Ⅱ_A, 11-keto-β-boswellic(KBA), and 3-acetyl-11-keto-β-boswellic acid(AKBA). A mo-dified Franz diffusion cell method was used to evaluate and compare the absorption properties of the gel paste without volatile oil and with volatile oil microemulsion. The results showed that the optimal prescription for Huoluo Xiaoling gel paste matrix was NP700(1.35 g), glycerol(7.00 g), micropowder silica gel(1.25 g), sodium carboxymethyl cellulose(0.20 g), tartaric acid(0.06 g), and glyceryl aluminum(0.04 g). The mass fractions of eight active ingredients in the paste were successively 0.48, 0.014, 0.95, 0.39, 0.57, 0.055, 0.35, and 0.97 mg·g~(-1). The results of the in vitro transdermal absorption test showed that the addition of the volatile oil or the volatile oil microemulsion promoted the transdermal absorption of the active ingredients, and the law of drug penetration conformed to the zero equation or the Higuchi equation. The gel paste prepared by the optimal prescription has good appearance and adhesion, with no residue, and has the characteristics of skeletal slow-release preparation, which is easy to reduce the number of administration, la-ying a foundation for the development of new external dosage forms of Huoluo Xiaoling Dan.
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Affiliation(s)
- Li-Hui Zhao
- Jiangsu Key Laboratory for High Technology Research of Traditional Chinese Medicine Formulae, National-Local Joint Engineering Research Center of Resources Industrialization of Chinese Meteria Medica and Prescription-oriented Innovative Drugs, Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine Nanjing 210023, China
| | - Wen Zhang
- Jiangsu Key Laboratory for High Technology Research of Traditional Chinese Medicine Formulae, National-Local Joint Engineering Research Center of Resources Industrialization of Chinese Meteria Medica and Prescription-oriented Innovative Drugs, Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine Nanjing 210023, China
| | - Ruo-Ying Fan
- Jiangsu Key Laboratory for High Technology Research of Traditional Chinese Medicine Formulae, National-Local Joint Engineering Research Center of Resources Industrialization of Chinese Meteria Medica and Prescription-oriented Innovative Drugs, Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine Nanjing 210023, China
| | - Shu-Lan Su
- Jiangsu Key Laboratory for High Technology Research of Traditional Chinese Medicine Formulae, National-Local Joint Engineering Research Center of Resources Industrialization of Chinese Meteria Medica and Prescription-oriented Innovative Drugs, Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine Nanjing 210023, China
| | - Er-Xin Shang
- Jiangsu Key Laboratory for High Technology Research of Traditional Chinese Medicine Formulae, National-Local Joint Engineering Research Center of Resources Industrialization of Chinese Meteria Medica and Prescription-oriented Innovative Drugs, Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine Nanjing 210023, China
| | - Da-Wei Qian
- Jiangsu Key Laboratory for High Technology Research of Traditional Chinese Medicine Formulae, National-Local Joint Engineering Research Center of Resources Industrialization of Chinese Meteria Medica and Prescription-oriented Innovative Drugs, Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine Nanjing 210023, China
| | - Jin-Ao Duan
- Jiangsu Key Laboratory for High Technology Research of Traditional Chinese Medicine Formulae, National-Local Joint Engineering Research Center of Resources Industrialization of Chinese Meteria Medica and Prescription-oriented Innovative Drugs, Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine Nanjing 210023, China
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Rawlinson SM, Zhao T, Ardipradja K, Zhang Y, Veugelers PF, Harper JA, David CT, Sundaramoorthy V, Moseley GW. Henipaviruses and lyssaviruses target nucleolar treacle protein and regulate ribosomal RNA synthesis. Traffic 2023; 24:146-157. [PMID: 36479968 PMCID: PMC10947316 DOI: 10.1111/tra.12877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 04/21/2022] [Revised: 11/24/2022] [Accepted: 11/28/2022] [Indexed: 12/14/2022]
Abstract
The nucleolus is a common target of viruses and viral proteins, but for many viruses the functional outcomes and significance of this targeting remains unresolved. Recently, the first intranucleolar function of a protein of a cytoplasmically-replicating negative-sense RNA virus (NSV) was identified, with the finding that the matrix (M) protein of Hendra virus (HeV) (genus Henipavirus, family Paramyxoviridae) interacts with Treacle protein within nucleolar subcompartments and mimics a cellular mechanism of the nucleolar DNA-damage response (DDR) to suppress ribosomal RNA (rRNA) synthesis. Whether other viruses utilise this mechanism has not been examined. We report that sub-nucleolar Treacle targeting and modulation is conserved between M proteins of multiple Henipaviruses, including Nipah virus and other potentially zoonotic viruses. Furthermore, this function is also evident for P3 protein of rabies virus, the prototype virus of a different RNA virus family (Rhabdoviridae), with Treacle depletion in cells also found to impact virus production. These data indicate that unrelated proteins of viruses from different families have independently developed nucleolar/Treacle targeting function, but that modulation of Treacle has distinct effects on infection. Thus, subversion of Treacle may be an important process in infection by diverse NSVs, and so could provide novel targets for antiviral approaches with broad specificity.
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Affiliation(s)
- Stephen M. Rawlinson
- Department of Microbiology, Biomedicine Discovery InstituteMonash UniversityMelbourneVictoriaAustralia
| | - Tianyue Zhao
- Department of Microbiology, Biomedicine Discovery InstituteMonash UniversityMelbourneVictoriaAustralia
| | - Katie Ardipradja
- Commonwealth Scientific and Industrial Research Organisation (CSIRO)Australian Centre for Disease Preparedness (ACDP)East GeelongVictoriaAustralia
| | - Yilin Zhang
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology InstituteThe University of MelbourneMelbourneAustralia
| | - Patrick F. Veugelers
- Department of Microbiology, Biomedicine Discovery InstituteMonash UniversityMelbourneVictoriaAustralia
| | - Jennifer A. Harper
- Commonwealth Scientific and Industrial Research Organisation (CSIRO)Australian Centre for Disease Preparedness (ACDP)East GeelongVictoriaAustralia
| | - Cassandra T. David
- Department of Microbiology, Biomedicine Discovery InstituteMonash UniversityMelbourneVictoriaAustralia
| | - Vinod Sundaramoorthy
- Commonwealth Scientific and Industrial Research Organisation (CSIRO)Australian Centre for Disease Preparedness (ACDP)East GeelongVictoriaAustralia
- School of MedicineDeakin UniversityGeelongVictoriaAustralia
| | - Gregory W. Moseley
- Department of Microbiology, Biomedicine Discovery InstituteMonash UniversityMelbourneVictoriaAustralia
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Wucher BR, Winans JB, Elsayed M, Kadouri DE, Nadell CD. Breakdown of clonal cooperative architecture in multispecies biofilms and the spatial ecology of predation. Proc Natl Acad Sci U S A 2023; 120:e2212650120. [PMID: 36730197 DOI: 10.1073/pnas.2212650120] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Biofilm formation, including adherence to surfaces and secretion of extracellular matrix, is common in the microbial world, but we often do not know how interaction at the cellular spatial scale translates to higher-order biofilm community ecology. Here we explore an especially understudied element of biofilm ecology, namely predation by the bacterium Bdellovibrio bacteriovorus. This predator can kill and consume many different Gram-negative bacteria, including Vibrio cholerae and Escherichia coli. V. cholerae can protect itself from predation within densely packed biofilm structures that it creates, whereas E. coli biofilms are highly susceptible to B. bacteriovorus. We explore how predator-prey dynamics change when V. cholerae and E. coli are growing in biofilms together. We find that in dual-species prey biofilms, E. coli survival under B. bacteriovorus predation increases, whereas V. cholerae survival decreases. E. coli benefits from predator protection when it becomes embedded within expanding groups of highly packed V. cholerae. But we also find that the ordered, highly packed, and clonal biofilm structure of V. cholerae can be disrupted if V. cholerae cells are directly adjacent to E. coli cells at the start of biofilm growth. When this occurs, the two species become intermixed, and the resulting disordered cell groups do not block predator entry. Because biofilm cell group structure depends on initial cell distributions at the start of prey biofilm growth, the surface colonization dynamics have a dramatic impact on the eventual multispecies biofilm architecture, which in turn determines to what extent both species survive exposure to B. bacteriovorus.
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Heine KB, Parry HA, Hood WR. How does density of the inner mitochondrial membrane influence mitochondrial performance? Am J Physiol Regul Integr Comp Physiol 2023; 324:R242-R248. [PMID: 36572555 PMCID: PMC9902215 DOI: 10.1152/ajpregu.00254.2022] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [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: 10/13/2022] [Revised: 12/21/2022] [Accepted: 12/21/2022] [Indexed: 12/28/2022]
Abstract
Our current understanding of variation in mitochondrial performance is incomplete. The production of ATP via oxidative phosphorylation is dependent, in part, on the structure of the inner mitochondrial membrane. Morphology of the inner membrane is crucial for the formation of the proton gradient across the inner membrane and, therefore, ATP synthesis. The inner mitochondrial membrane is dynamic, changing shape and surface area. These changes alter density (amount per volume) of the inner mitochondrial membrane within the confined space of the mitochondrion. Because the number of electron transport system proteins within the inner mitochondrial membrane changes with inner mitochondrial membrane area, a change in the amount of inner membrane alters the capacity for ATP production within the organelle. This review outlines the evidence that the association between ATP synthases, inner mitochondrial membrane density, and mitochondrial density (number of mitochondria per cell) impacts ATP production by mitochondria. Furthermore, we consider possible constraints on the capacity of mitochondria to produce ATP by increasing inner mitochondrial membrane density.
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Affiliation(s)
- Kyle B Heine
- Department of Biological Sciences, Auburn University, Auburn, Alabama
| | - Hailey A Parry
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland
| | - Wendy R Hood
- Department of Biological Sciences, Auburn University, Auburn, Alabama
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Ezure T. Vellus hair condition is related to dermal elasticity and facial sagging severity. Skin Res Technol 2023; 29:e13287. [PMID: 36823501 PMCID: PMC10155787 DOI: 10.1111/srt.13287] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 01/11/2023] [Accepted: 01/20/2023] [Indexed: 02/05/2023]
Abstract
BACKGROUND Sagging of facial skin is a critical factor associated with an aged appearance. However, the mechanism of sagging has not been fully elucidated. The facial skin contains vellus hair (fine hair), but the contribution of vellus hair to skin condition and facial aging has yet to be studied. AIM We aimed to clarify the influence of vellus hair on the physical properties and sagging severity of facial skin by establishing an evaluation system for vellus hair condition. METHOD Photographs were taken to assess the vellus hair condition in the cheek area in 30 middle-aged female volunteers. Skin elasticity was measured with a cutometer and sagging severity was evaluated by using previously established photograph-based grading criteria. RESULTS Facial skin vellus hairs were divided into three types: fine, thick, and normal thickness. Based on this observation, we established a 6-grade photograph-based grading system based on the dominant type of vellus hair in the target area and used it to evaluate vellus hair condition at the cheek. We found that vellus hair condition is significantly positively related to skin elasticity parameters Ua/Uf (representing overall elasticity including creep and creep recovery), Ur/Ue (representing net elasticity without viscoelastic creep), and Ur/Uf (ratio of elastic recovery to total deformation). Further, vellus hair condition was significantly negatively correlated to sagging severity. CONCLUSION Our results suggest that vellus hair condition positively contributes to the skin's physical properties, and consequently deterioration of the vellus hair condition promotes an aged facial appearance.
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Affiliation(s)
- Tomonobu Ezure
- Shiseido Co., Ltd., MIRAI Technology InstituteYokohamaJapan
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41
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Shen YL, Zhuang SJ, Yang F, Gong C, Xu X. Prefabricated platinum nanomaterial matrix for MALDI-MS imaging of oligosaccharides and lipids in plant tissues. Front Plant Sci 2023; 14:1105374. [PMID: 36743483 PMCID: PMC9889645 DOI: 10.3389/fpls.2023.1105374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 01/02/2023] [Indexed: 06/18/2023]
Abstract
Matrix-assisted laser desorption ionization mass spectrometry imaging (MALDI-MSI) can visualize the spatial distribution characteristics of molecules in tissues in situ, in which the matrix plays a key role. In this paper, we propose a platinum nanomaterial pre-coated matrix, which can be prepared in bulk by sputtering platinum nanoparticles onto slides using an ion sputterer and then used for MALDI-MS analysis by placing tissue sections on the matrix. We used this matrix for MALDI-MS imaging analysis of corn kernels and germinated wheat sections, and the results show that triacylglycerides were mainly distributed in the embryo of corn kernels and germinated wheat, and sugars were mainly distributed in the endosperm, with the highest content of disaccharides.It provides a simple and reliable experimental condition for analyzing the distribution of oligosaccharide and lipid components in plant tissues.
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He L, Maheshwari A. Mitochondria in Early Life. Curr Pediatr Rev 2023; 19:395-416. [PMID: 36545736 DOI: 10.2174/1573396319666221221110728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022]
Abstract
Mitochondria are highly-dynamic, membrane-bound organelles that generate most of the chemical energy needed to power the biochemical reactions in eukaryotic cells. These organelles also communicate with the nucleus and other cellular structures to help maintain somatic homeostasis, allow cellular adaptation to stress, and help maintain the developmental trajectory. Mitochondria also perform numerous other functions to support metabolic, energetic, and epigenetic regulation in our cells. There is increasing information on various disorders caused by defects in intrinsic mitochondrial or supporting nuclear genes, on different organ systems. In this review, we have summarized the ultrastructural morphology, structural components, our current understanding of the evolution, biogenesis, dynamics, function, clinical manifestations of mitochondrial dysfunction, and future possibilities. The implications of deficits in mitochondrial dynamics and signaling for embryo viability and offspring health are also explored. We present information from our own clinical and laboratory research in conjunction with information collected from an extensive search in the databases PubMed, EMBASE, and Scopus.
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Affiliation(s)
- Ling He
- School of Medicine, Johns Hopkins University, Baltimore, MD 21287, USA
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43
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Kang H, Lai M, Yao Y, Wang B, Su X, Cheng Y. Novel Insights into the Important Role of Leptin in Modulating the Pathological Development of Fibrotic-related Diseases. Curr Mol Med 2023; 23:1066-1076. [PMID: 36411554 DOI: 10.2174/1566524023666221121105933] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 04/19/2022] [Revised: 09/04/2022] [Accepted: 09/06/2022] [Indexed: 11/23/2022]
Abstract
Leptin, as one of the most important cytokines within the circulation, has been confirmed to play a vital role in the hypothalamus of the central nervous system (CNS), which could modulate energy homeostasis by suppressing food intake. Furthermore, leptin could also influence cell metabolism by acting directly on the leptin receptor, which is a relatively small peptide and is mainly produced and released by fat tissue in mammals. On the other hand, the excessive extracellular matrix (ECM) could induce damage in normal tissues or organ structures, which might further induce fibrotic development in multiple tissues or organs, including the liver, heart, and kidneys. Notably, the sustainable development of fibrosis promotes the structural lesion and functional decline of different organs, which subsequently threatens human health and poses serious risks to human life. Emerging evidence has shown that leptin plays an important role in the fibrotic progression within multiple tissues and organs in mammals and has an alleviating effect on fibrosis. Concerning this notion, it has been proposed that leptin could be identified as a vital therapeutic strategy for fibrotic progression in clinical practice. Consequently, this review summarized the potential mechanisms of leptin in modulating fibrotic development in diverse tissues and organs to provide a theoretical basis for treating fibrotic-related diseases. In addition, the potential mechanisms whereby leptin affects the development of fibrosis were also summarized in the current review.
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Affiliation(s)
- Huiyuan Kang
- Department of Cardiology, Xiamen Cardiovascular Hospital of Xiamen University, School of Medicine, Xiamen University, Fujian, China
| | - Min Lai
- Department of Cardiology, Xiamen Cardiovascular Hospital of Xiamen University, School of Medicine, Xiamen University, Fujian, China
| | - Yan'er Yao
- Department of Cardiology, Xiamen Cardiovascular Hospital of Xiamen University, School of Medicine, Xiamen University, Fujian, China
| | - Bin Wang
- Department of Cardiology, Xiamen Cardiovascular Hospital of Xiamen University, School of Medicine, Xiamen University, Fujian, China
| | - Xin Su
- Department of Cardiology, Xiamen Cardiovascular Hospital of Xiamen University, School of Medicine, Xiamen University, Fujian, China
| | - Ye Cheng
- Department of Cardiology, Xiamen Cardiovascular Hospital of Xiamen University, School of Medicine, Xiamen University, Fujian, China
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Chen L, Li C, He A, Tong H, Lu X, Yang R, Chen X, Wu X, Wang X, Wang S, Ma J, Fu Y, Zhang T. Changes of Age-related Auricular Cartilage Plasticity and Biomechanical Property in a Rabbit Model. Laryngoscope 2023; 133:88-94. [PMID: 35385162 DOI: 10.1002/lary.30124] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 02/18/2022] [Accepted: 03/15/2022] [Indexed: 02/02/2023]
Abstract
OBJECTIVES Ear molding is an emerging technique that can correct auricular deformities. Treatment initiation time is the most important prognostic determinant of ear molding. Here, we aimed to examine why auricular cartilage plasticity appeared to diminish with age. Thus, we characterized age-related changes in the biomechanical, biochemical, and morphological properties of auricular cartilage. METHODS New Zealand rabbits were used as the experimental animal. We examined immature [postnatal 0 day (P0), 5 days (P5), 15 days (P15)], young [2 months (2M)], and mature [6 months (6M)] rabbits. Rabbits' ears were splinted and folded using adhesive fixation strips. Folding duration ranged from 1 day to 5 days to 10 days. Photographs were taken to calculate the retained fold angle. Cartilage morphology and extracellular matrix (ECM) content were examined histologically (using hematoxylin-eosin, Safranin O, elastic Van Gieson, and Masson's trichrome). Water content, DNA content, and cell density were also analyzed. Biomechanical properties were measured using a Nano indenter. RESULTS Immature ears had smaller angles after strip removal, and the angled deformation lasted a longer time. Cartilage matrix compositions, including glycosaminoglycan (GAG), elastin fiber, and collagen, increased over development. The water content, DNA content, and cell density decreased with age. Young's modulus was significantly higher in mature cartilage. CONCLUSIONS Here, we successfully established an animal model of ear molding and demonstrated that immature cartilage was associated with better plasticity. We also found that the cartilage's biomechanical property increased with the accumulation of ECM. The biomechanical change could underlie age-related shape plasticity. LEVEL OF EVIDENCE NA Laryngoscope, 133:88-94, 2023.
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Affiliation(s)
- Lili Chen
- ENT institute, Eye & ENT Hospital, Fudan University, Shanghai, China.,Department of Facial Plastic and Reconstructive Surgery, Eye & ENT Hospital, Fudan University, Shanghai, China
| | - Chenlong Li
- ENT institute, Eye & ENT Hospital, Fudan University, Shanghai, China.,Department of Facial Plastic and Reconstructive Surgery, Eye & ENT Hospital, Fudan University, Shanghai, China
| | - Aijuan He
- ENT institute, Eye & ENT Hospital, Fudan University, Shanghai, China.,Department of Facial Plastic and Reconstructive Surgery, Eye & ENT Hospital, Fudan University, Shanghai, China
| | - Hua Tong
- ENT institute, Eye & ENT Hospital, Fudan University, Shanghai, China.,Department of Facial Plastic and Reconstructive Surgery, Eye & ENT Hospital, Fudan University, Shanghai, China
| | - Xinyu Lu
- ENT institute, Eye & ENT Hospital, Fudan University, Shanghai, China.,Department of Facial Plastic and Reconstructive Surgery, Eye & ENT Hospital, Fudan University, Shanghai, China
| | - Run Yang
- ENT institute, Eye & ENT Hospital, Fudan University, Shanghai, China.,Department of Facial Plastic and Reconstructive Surgery, Eye & ENT Hospital, Fudan University, Shanghai, China
| | - Xin Chen
- ENT institute, Eye & ENT Hospital, Fudan University, Shanghai, China.,Department of Facial Plastic and Reconstructive Surgery, Eye & ENT Hospital, Fudan University, Shanghai, China
| | - Xu Wu
- ENT institute, Eye & ENT Hospital, Fudan University, Shanghai, China.,Department of Facial Plastic and Reconstructive Surgery, Eye & ENT Hospital, Fudan University, Shanghai, China
| | - Xin Wang
- ENT institute, Eye & ENT Hospital, Fudan University, Shanghai, China.,Department of Facial Plastic and Reconstructive Surgery, Eye & ENT Hospital, Fudan University, Shanghai, China
| | - Shuqi Wang
- ENT institute, Eye & ENT Hospital, Fudan University, Shanghai, China.,Department of Facial Plastic and Reconstructive Surgery, Eye & ENT Hospital, Fudan University, Shanghai, China
| | - Jing Ma
- ENT institute, Eye & ENT Hospital, Fudan University, Shanghai, China.,Department of Facial Plastic and Reconstructive Surgery, Eye & ENT Hospital, Fudan University, Shanghai, China
| | - Yaoyao Fu
- ENT institute, Eye & ENT Hospital, Fudan University, Shanghai, China.,Department of Facial Plastic and Reconstructive Surgery, Eye & ENT Hospital, Fudan University, Shanghai, China
| | - Tianyu Zhang
- ENT institute, Eye & ENT Hospital, Fudan University, Shanghai, China.,Department of Facial Plastic and Reconstructive Surgery, Eye & ENT Hospital, Fudan University, Shanghai, China.,NHC Key Laboratory of Hearing Medicine, Fudan University, Shanghai, China
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Hosseini M, Dalley AJ, Shafiee A. Convergence of Biofabrication Technologies and Cell Therapies for Wound Healing. Pharmaceutics 2022; 14:pharmaceutics14122749. [PMID: 36559242 PMCID: PMC9785239 DOI: 10.3390/pharmaceutics14122749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/01/2022] [Accepted: 12/04/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Cell therapy holds great promise for cutaneous wound treatment but presents practical and clinical challenges, mainly related to the lack of a supportive and inductive microenvironment for cells after transplantation. Main: This review delineates the challenges and opportunities in cell therapies for acute and chronic wounds and highlights the contribution of biofabricated matrices to skin reconstruction. The complexity of the wound healing process necessitates the development of matrices with properties comparable to the extracellular matrix in the skin for their structure and composition. Over recent years, emerging biofabrication technologies have shown a capacity for creating complex matrices. In cell therapy, multifunctional material-based matrices have benefits in enhancing cell retention and survival, reducing healing time, and preventing infection and cell transplant rejection. Additionally, they can improve the efficacy of cell therapy, owing to their potential to modulate cell behaviors and regulate spatiotemporal patterns of wound healing. CONCLUSION The ongoing development of biofabrication technologies promises to deliver material-based matrices that are rich in supportive, phenotype patterning cell niches and are robust enough to provide physical protection for the cells during implantation.
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Affiliation(s)
- Motaharesadat Hosseini
- School of Mechanical, Medical and Process Engineering, Faculty of Engineering, Queensland University of Technology, Brisbane, QLD 4059, Australia
- ARC Industrial Transformation Training Centre for Multiscale 3D Imaging, Modelling and Manufacturing (M3D), Queensland University of Technology, Brisbane, QLD 4059, Australia
| | - Andrew J. Dalley
- Herston Biofabrication Institute, Metro North Hospital and Health Service, Brisbane, QLD 4029, Australia
- Royal Brisbane and Women’s Hospital, Metro North Hospital and Health Service, Brisbane, QLD 4029, Australia
| | - Abbas Shafiee
- Herston Biofabrication Institute, Metro North Hospital and Health Service, Brisbane, QLD 4029, Australia
- Royal Brisbane and Women’s Hospital, Metro North Hospital and Health Service, Brisbane, QLD 4029, Australia
- Frazer Institute, Translational Research Institute, The University of Queensland, Brisbane, QLD 4102, Australia
- Correspondence: or
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Ghassemi Nejad J, Ghaffari MH, Ataallahi M, Jo JH, Lee HG. Stress Concepts and Applications in Various Matrices with a Focus on Hair Cortisol and Analytical Methods. Animals (Basel) 2022; 12:ani12223096. [PMID: 36428324 PMCID: PMC9686725 DOI: 10.3390/ani12223096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/07/2022] [Accepted: 11/08/2022] [Indexed: 11/12/2022] Open
Abstract
When studying stress in animals, it is important to understand the types of stress and their classification, and how to assess the stress levels in different animal species using different matrices accurately and precisely. The classification of stress types helps to distinguish between good stress (eustress) and bad stress (distress). Hence, first, it is crucial to assess the animal's level of stress in a non-intrusive manner and second to identify the type of stress that is best suited to its environment. Third, it is also important to analyze the obtained samples using a suitable method to increase the validity of stress hormone measurements. Therefore, in this review, we aim to: (1) explain the classification of stress, (2) discuss the wide range of body matrices (e.g., saliva, milk, hair, urine, feces, sweat, fins, etc.) that can be used as samples to evaluate stress levels, as well as their comparisons and limitations, and present the reliable matrices for measuring stress hormones with special emphasis on hair, (3) compare the analytical methods for measuring stress hormones after sample preparation. Despite some literature that does not include hair as a reliable matrix for evaluating stress levels, hair is one of the matrices for measuring long-term stress hormone accumulations. This review discusses some factors that influence the level of stress hormones in the hair. By understanding these issues, the scientific community will not only be able to improve the understanding of stress and biomarker evaluation but also suggest how to deal with the consequences of stress in future research.
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Affiliation(s)
| | | | - Mohammad Ataallahi
- College of Animal Life Sciences, Kangwon National University, Chuncheon 24341, Korea
| | - Jang-Hoon Jo
- Department of Animal Science, Konkuk University, Seoul 05029, Korea
| | - Hong-Gu Lee
- Department of Animal Science, Konkuk University, Seoul 05029, Korea
- Correspondence: ; Tel.: +82-2-450-0523
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Beissinger SR, Peterson SM, Hall LA, Van Schmidt N, Tecklin J, Risk BB, Richmond OM, Kovach TJ, Kilpatrick AM. Stability of patch-turnover relationships under equilibrium and nonequilibrium metapopulation dynamics driven by biogeography. Ecol Lett 2022; 25:2372-2383. [PMID: 36209497 PMCID: PMC9828715 DOI: 10.1111/ele.14111] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 06/27/2022] [Accepted: 07/31/2022] [Indexed: 01/12/2023]
Abstract
Two controversial tenets of metapopulation biology are whether patch quality and the surrounding matrix are more important to turnover (colonisation and extinction) than biogeography (patch area and isolation) and whether factors governing turnover during equilibrium also dominate nonequilibrium dynamics. We tested both tenets using 18 years of surveys for two secretive wetland birds, black and Virginia rails, during (1) a period of equilibrium with stable occupancy and (2) after drought and arrival of West Nile Virus (WNV), which resulted in WNV infections in rails, increased extinction and decreased colonisation probabilities modified by WNV, nonequilibrium dynamics for both species and occupancy decline for black rails. Area (primarily) and isolation (secondarily) drove turnover during both stable and unstable metapopulation dynamics, greatly exceeding the effects of patch quality and matrix conditions. Moreover, slopes between turnover and patch characteristics changed little between equilibrium and nonequilibrium, confirming the overriding influences of biogeographic factors on turnover.
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Affiliation(s)
- Steven R. Beissinger
- Department of Environmental Science, Policy & ManagementUniversity of CaliforniaBerkeleyCaliforniaUSA,Museum of Vertebrate ZoologyUniversity of CaliforniaBerkeleyCaliforniaUSA
| | - Sean M. Peterson
- Department of Environmental Science, Policy & ManagementUniversity of CaliforniaBerkeleyCaliforniaUSA,Department of Environmental BiologyState University of New York College of Environmental Science and ForestryNew YorkUSA
| | - Laurie A. Hall
- Department of Environmental Science, Policy & ManagementUniversity of CaliforniaBerkeleyCaliforniaUSA,Museum of Vertebrate ZoologyUniversity of CaliforniaBerkeleyCaliforniaUSA,U.S. Geological Survey, Western Ecological Research Center, San Francisco Bay Estuary Field StationCaliforniaUSA
| | - Nathan Van Schmidt
- Department of Environmental Science, Policy & ManagementUniversity of CaliforniaBerkeleyCaliforniaUSA,US Geological Survey, Fort Collins Science CenterFort CollinsColoradoUSA
| | - Jerry Tecklin
- Sierra Foothills Research and Extension CenterBrowns ValleyCaliforniaUSA,21170 Shields Camp RoadNevada CityCaliforniaUSA
| | - Benjamin B. Risk
- Department of Environmental Science, Policy & ManagementUniversity of CaliforniaBerkeleyCaliforniaUSA,Department of Biostatistics and BioinformaticsEmory UniversityAtlantaGeorgiaUSA
| | - Orien M. Richmond
- Department of Environmental Science, Policy & ManagementUniversity of CaliforniaBerkeleyCaliforniaUSA,Rocky Mountain Arsenal National Wildlife RefugeCommerce CityColoradoUSA
| | - Tony J. Kovach
- Department of Ecology and Evolutionary BiologyUniversity of CaliforniaSanta CruzCaliforniaUSA,California Department of Public Health/Vector Borne Disease SectionCaliforniaUSA
| | - A. Marm Kilpatrick
- Department of Ecology and Evolutionary BiologyUniversity of CaliforniaSanta CruzCaliforniaUSA
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Lila MA, Hoskin RT, Grace MH, Xiong J, Strauch R, Ferruzzi M, Iorizzo M, Kay C. Boosting the Bioaccessibility of Dietary Bioactives by Delivery as Protein-Polyphenol Aggregate Particles. J Agric Food Chem 2022; 70:13017-13026. [PMID: 35394772 DOI: 10.1021/acs.jafc.2c00398] [Citation(s) in RCA: 3] [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] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Protein-polyphenol aggregate particles concurrently fortify a functional food product with healthy dietary proteins and concentrated polyphenols. However, what impact does ingestion of aggregate particles have on ultimate health relevance of either the polyphenolic molecules in the matrix or the protein molecules? Because human health benefits are contingent on bioavailability after ingestion, the fate of these molecules during transit in the gastrointestinal tract (GIT) will dictate their utility as functional food ingredients. This brief review explores diverse applications of protein-polyphenol particles in the food industry and the bioaccessibility of both bioactive polyphenolic compounds and edible proteins. Evidence to date suggests that complexation of phytoactive polyphenolics effectively enhances their health-relevant impacts, specifically because the phytoactives are protected in the protein matrix during transit in the GIT, allowing intact, non-degraded molecules to reach the colon for catabolism at the gut microbiome level, a prerequisite to realize the health benefits of these active compounds.
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Affiliation(s)
- Mary Ann Lila
- Plants for Human Health Institute, Food Bioprocessing and Nutrition Sciences Department, North Carolina State University, North Carolina Research Campus, Kannapolis, North Carolina 28081, United States
| | - Roberta Targino Hoskin
- Plants for Human Health Institute, Food Bioprocessing and Nutrition Sciences Department, North Carolina State University, North Carolina Research Campus, Kannapolis, North Carolina 28081, United States
| | - Mary H Grace
- Plants for Human Health Institute, Food Bioprocessing and Nutrition Sciences Department, North Carolina State University, North Carolina Research Campus, Kannapolis, North Carolina 28081, United States
| | - Jia Xiong
- Plants for Human Health Institute, Food Bioprocessing and Nutrition Sciences Department, North Carolina State University, North Carolina Research Campus, Kannapolis, North Carolina 28081, United States
| | - Renee Strauch
- Plants for Human Health Institute, Food Bioprocessing and Nutrition Sciences Department, North Carolina State University, North Carolina Research Campus, Kannapolis, North Carolina 28081, United States
| | - Mario Ferruzzi
- Arkansas Childrens Nutrition Center and University of Arkansas for Medical Sciences, Little Rock, Arkansas 72202, United States
| | - Massimo Iorizzo
- Plants for Human Health Institute, Food Bioprocessing and Nutrition Sciences Department, North Carolina State University, North Carolina Research Campus, Kannapolis, North Carolina 28081, United States
| | - Colin Kay
- Plants for Human Health Institute, Food Bioprocessing and Nutrition Sciences Department, North Carolina State University, North Carolina Research Campus, Kannapolis, North Carolina 28081, United States
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Salamin O, Langer T, Saugy J, Saugy M, Grabherr S, Kuuranne T, Nicoli R. Comparison of three different blood matrices for the quantification of endogenous steroids using UHPLC-MS/MS. Drug Test Anal 2022; 14:1920-1925. [PMID: 36208447 DOI: 10.1002/dta.3382] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/02/2022] [Accepted: 10/03/2022] [Indexed: 11/06/2022]
Abstract
Urine is currently the matrix of choice for the detection of exogenous substances but also for the application of the steroidal module of the Athlete Biological Passport (ABP) consisting in a longitudinal monitoring of steroid biomarkers. To fill the limitations related to urine, the longitudinal monitoring of serum steroids concentration in the so-called 'blood steroid profile' has recently been proposed. Although serum samples are collected much less than urine samples, plasma derived from ABP whole blood samples used for the full blood count could be exploited for the quantification of endogenous steroids. Alternatively, dried blood spots (DBS) which are much easier to collect could also serve as matrix for the steroid profile. In this study, we compared the concentration levels of several endogenous steroids measured in three different blood matrices (serum, plasma and DBS) collected from 100 elite athletes participating in the 2019 Doha World Athletics Championships using UHPLC-MS/MS. Plasma and serum samples were collected by venipuncture while DBS were generated from whole blood samples. Although steroids demonstrated a good agreement between the three matrices, a slight but acceptable underestimation (10-20%) was observed in plasma compared to serum. The difference between DBS and the two other matrices was dependent of the bias between serum and plasma. We also showed that a generic HCT correction for DBS could be a valuable approach for quantitative measurements. This study demonstrates the possibility to use three different matrices for the quantification of endogenous steroids although the slight discrepancies should be considered for longitudinal evaluation.
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Affiliation(s)
- Olivier Salamin
- Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Lausanne and Geneva, Lausanne University Hospital and University of Lausanne, Switzerland.,Research and Expertise in anti-Doping sciences (REDs), Institute of Sport Sciences, University of Lausanne, Lausanne, Switzerland
| | - Tobias Langer
- Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Lausanne and Geneva, Lausanne University Hospital and University of Lausanne, Switzerland.,University Center of Legal Medicine Lausanne-Geneva, University Hospitals of Lausanne and Geneva, University of Lausanne and University of Geneva, Switzerland
| | - Jonas Saugy
- Research and Expertise in anti-Doping sciences (REDs), Institute of Sport Sciences, University of Lausanne, Lausanne, Switzerland
| | - Martial Saugy
- Research and Expertise in anti-Doping sciences (REDs), Institute of Sport Sciences, University of Lausanne, Lausanne, Switzerland
| | - Silke Grabherr
- University Center of Legal Medicine Lausanne-Geneva, University Hospitals of Lausanne and Geneva, University of Lausanne and University of Geneva, Switzerland
| | - Tiia Kuuranne
- Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Lausanne and Geneva, Lausanne University Hospital and University of Lausanne, Switzerland
| | - Raul Nicoli
- Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Lausanne and Geneva, Lausanne University Hospital and University of Lausanne, Switzerland
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Gaudet C, Solecki L, Mathéaud B, Odet S, Meyer C, Louvrier A, Gindraux F. Questions about Residual Cell Viability in Cryopreserved Human Amniotic Membrane and Its Impact on Clinical Applications. Biomedicines 2022; 10:2456. [PMID: 36289719 DOI: 10.3390/biomedicines10102456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 09/14/2022] [Accepted: 09/15/2022] [Indexed: 11/17/2022] Open
Abstract
We questioned the relevance of evaluating residual cell viability in human amniotic membrane (hAM) after its cryopreservation since cell survival is controversial and its ability to act as a matrix (including the presence of growth factors and cytokines) appears to be most important for tissue regeneration purposes. We also discussed the usefulness of osteodifferentiating amniotic cells in whole hAM for bone repair applications. We have evidence that determining residual cell viability after cryopreservation and hAM osteodifferentiation is not justified.
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