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Decellularized matrix

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https://www.readbyqxmd.com/read/28819137/precise-stacking-of-decellularized-extracellular-matrix-based-3d-cell-laden-constructs-by-a-3d-cell-printing-system-equipped-with-heating-modules
#1
Geunseon Ahn, Kyung-Hyun Min, Changhwan Kim, Jeong-Seok Lee, Donggu Kang, Joo-Yun Won, Dong-Woo Cho, Jun-Young Kim, Songwan Jin, Won-Soo Yun, Jin-Hyung Shim
Three-dimensional (3D) cell printing systems allow the controlled and precise deposition of multiple cells in 3D constructs. Hydrogel materials have been used extensively as printable bioinks owing to their ability to safely encapsulate living cells. However, hydrogel-based bioinks have drawbacks for cell printing, e.g. inappropriate crosslinking and liquid-like rheological properties, which hinder precise 3D shaping. Therefore, in this study, we investigated the influence of various factors (e.g. bioink concentration, viscosity, and extent of crosslinking) on cell printing and established a new 3D cell printing system equipped with heating modules for the precise stacking of decellularized extracellular matrix (dECM)-based 3D cell-laden constructs...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28812172/delayed-post-mastectomy-breast-reconstructions-with-allogeneic-acellular-dermal-matrix-prepared-by-a-new-decellularizationmethod
#2
Martin Bohac, Ivan Varga, Stefan Polak, Jana Dragunova, Jozef Fedeles, Jan Koller
Acellular dermal matrix (ADM) is a tissue graft of allogeneic origin from post-mortem tissue donors prepared by an innovative decellularization process. The newly developed non-toxic and low cost decellularization process of cadaver origin dermis included ADM in breast reconstruction procedures proved to help coverage of the lower-pole of breast expanders or implants. As the results have shown, it did help to eliminate autologous dermis donor site morbidity along with shortening the operation time by avoiding elevation of additional muscle or fascia during the operation...
August 16, 2017: Cell and Tissue Banking
https://www.readbyqxmd.com/read/28806294/the-tissue-engineered-tendon-bone-interface-in-vitro-and-in-vivo-synergistic-effects-of-adipo-derived-stem-cells-platelet-rich-plasma-and-extracellular-matrix-hydrogel
#3
Rory McGoldrick, Arhana Chattopadhyay, Christopher Crowe, Grace Chiou, Kenneth Hui, Simon Farnebo, Christopher Davis, Anais Le Grand, Molly Jacobs, Hung Pham, James Chang
INTRODUCTION: Suboptimal healing of the tendon bone interface (TBI) remains an unsolved problem. One solution is a biocompatible tissue engineered construct that promotes augmented healing. We hypothesisze that 1.) the presence of Platelet Rich Plasma (PRP) and prolonged in vitro incubation produces tissue engineered tendon bone interface scaffolds with greater reseeding of viable Adipo-derived Stem Cells (ADSC) and 2.) when implanted with extracellular matrix hydrogel, constructs will display superior in vivo strength repair and biocompatibility...
August 3, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28798993/decellularization-and-recellularization-of-cartilage
#4
Catherine A Bautista, Bahar Bilgen
Decellularization of cartilage enables the use of cartilage allografts or xenografts as natural scaffolds for repair and regeneration of injured cartilage. The preservation of the extracellular matrix ultrastructure of the graft makes this a promising tool for cartilage tissue engineering. We have optimized the decellularization protocol by enzymatically digesting proteoglycans while preserving the native collagen architecture. Here we describe our methods for cartilage decellularization and cell labeling for the tracking of infiltration for recellularization in detail...
August 11, 2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28795365/preparation-of-cell-derived-decellularized-matrices-mimicking-native-ecm-during-the-osteogenesis-and-adipogenesis-of-mesenchymal-stem-cells
#5
Takashi Hoshiba, Naoki Kawazoe, Guoping Chen
The extracellular matrix (ECM) is an important extracellular microenvironmental factor that regulates stem cell differentiation. The ECM is remodeled according to stem cell differentiation progression to precisely regulate the differentiation. Thus, it is expected that the matrices mimicking native ECM surrounding differentiating cells at each differentiation stage provide a favorable microenvironment to promote stem cell differentiation. However, it is difficult to prepare matrices mimicking native ECM using chemical methods because the ECM has a complicated composition...
August 10, 2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28783870/cxcr4-antagonist-delivery-on-decellularized-skin-scaffold-facilitates-impaired-wound-healing-in-diabetic-mice-by-increasing-expression-of-sdf-1-and-enhancing-migration-of-cxcr4-positive-cells
#6
Hao Liu, Hanping Liu, Xiaoyuan Deng, Maosheng Chen, Xue Han, Wenxia Yan, Ning Wang
C-X-C chemokine receptor type 4 (CXCR4) is an alpha-chemokine receptor specific for stromal cell-derived factor 1 (SDF-1 also called CXCL12). The antagonist of CXCR4 can mobilize CD34+ cells and hematopoietic stem cells from bone marrow within several hours, and it has an efficacy on diabetes ulcer through acting on the SDF-1/CXCR4 axis. In this study, we investigated for the first time whether the antagonist of CXCR4 (Plerixafor/AMD3100) delivered on acellular dermal matrix (ADM) may accelerate diabetes-impaired wound healing...
June 8, 2017: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/28783453/development-of-human-salivary-gland-like-tissue-in-vitro
#7
Marc Burghartz, Simon Lennartz, Matthias Schweinlin, Rudolf Hagen, Norbert Kleinsasser, Stephan Hackenberg, Gudrun Steußloff, Agmal Scherzad, Kathrin Radeloff, Christian Ginzkey, Heike Walles, Marco Metzger
The loss of salivary gland function caused by radiation therapy of the head and neck is a serious condition and it affects a patient's quality of life. The current lack of effective therapies demands new options to be explored. This study tested whether human salivary gland epithelial cells (SGECs) could be successfully cultured on a decellularized porcine gut matrix (SIS-muc) in both mono- and coculture with microvascular endothelial cells (mvECs). By performing immunofluorescence imaging, transmission as well as scanning electron microscopy (SEM), quantitative polymerase chain reaction (qPCR), and an amylase enzyme assay, it was investigated as to what extent the three-dimensional (3D)-cultured cells could maintain their molecular differentiation and the production of working α-amylase (α-AMY) compared with two-dimensional (2D) culture...
August 4, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28776178/protocols-for-rat-uterus-isolation-and-decellularization-applications-for-uterus-tissue-engineering-and-3d-cell-culturing
#8
Arvind Manikantan Padma, Tom Tristan Tiemann, Ahmed Baker Alshaikh, Randa Akouri, Min Jong Song, Mats Hellström
Sophisticated culturing conditions are required to grow cells in a three-dimensional (3D) environment. Cells then require a type of scaffold rich in proteins, growth factors, and signaling molecules that simulates their natural environment. Tissues from all species of animals have an organ-specific extracellular matrix (ECM) structure that plays a key role in cell proliferation and migration. Hence, the scaffold composition plays a significant role for any successful 3D cell culturing system. We developed a whole rat uterus ECM scaffold by the perfusion of detergents and ionic solutions through the vascular system of an isolated normal rat uterus in a process termed "decellularization...
August 4, 2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28770492/decellularized-bone-matrix-scaffold-for-bone-regeneration
#9
Guobao Chen, Yonggang Lv
Decellularized bone matrix is gaining a lot of attention as implantable biomaterials and/or biological scaffolds for bone tissue repair, and shows good clinical performance. This chapter describes the processing techniques and characterization protocols of decellularized bone. For the applications of the decellularized bone scaffold in promoting bone repair and regeneration, we discuss some of the current advances, and highlight the advantages and disadvantages of these scaffolds. Fabrication and application of the hydrogel derived from decellularized bone for bone tissue engineering are also presented...
August 3, 2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28763463/recellularization-of-a-novel-off-the-shelf-valve-following-xenogenic-implantation-into-the-right-ventricular-outflow-tract
#10
Ryan S Hennessy, Jason L Go, Rebecca R Hennessy, Brandon J Tefft, Soumen Jana, Nicholas J Stoyles, Mohammed A Al-Hijji, Jeremy J Thaden, Sorin V Pislaru, Robert D Simari, John M Stulak, Melissa D Young, Amir Lerman
Current research on valvular heart repair has focused on tissue-engineered heart valves (TEHV) because of its potential to grow similarly to native heart valves. Decellularized xenografts are a promising solution; however, host recellularization remains challenging. In this study, decellularized porcine aortic valves were implanted into the right ventricular outflow tract (RVOT) of sheep to investigate recellularization potential. Porcine aortic valves, decellularized with sodium dodecyl sulfate (SDS), were sterilized by supercritical carbon dioxide (scCO2) and implanted into the RVOT of five juvenile polypay sheep for 5 months (n = 5)...
2017: PloS One
https://www.readbyqxmd.com/read/28756760/spray-delivery-of-intestinal-organoids-to-reconstitute-epithelium-on-decellularized-native-extracellular-matrix
#11
Dana M Schwartz, Meryem O Pehlivaner Kara, Allan Goldstein, Harold C Ott, Adam Ekenseair
The native extracellular matrix (ECM) serves as a unique platform for tissue engineering because it provides an organ-specific scaffold in terms of both matrix composition and tissue architecture. However, efficacious cell-seeding techniques for recellularizing the ECM constructs with appropriate cell types to restore biologic function remain under development. In this study, the impact of spraying as a seeding technique for repopulation of decellularized small intestine was investigated. In a series of experiments, CaCo-2 cells was first used to investigate the effect of spray device type and pressure on cell viability and to optimize parameters for seeding intestinal epithelial cells...
July 29, 2017: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/28752668/comparison-of-two-decellularized-dermal-equivalents
#12
Shiuhyang Kuo, Hyungjin Myra Kim, Zhifa Wang, Eve L Bingham, Atsuko Miyazawa, Cynthia L Marcelo, Stephen E Feinberg
Immunologically inert allogeneic acellular dermal scaffolds provide a matrix with molecular architecture close to native tissues, which synthetic scaffolds cannot. Not all nature-derived scaffolds possess the same biological and physical properties. The different properties of scaffolds supporting cellular growth used for manufacturing tissue engineered grafts could lead to different implantation results. The scaffold properties should be carefully considered in order to meet the expected outcomes of tissue engineered grafts...
July 28, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28752541/functionalization-of-porous-bcp-scaffold-by-generating-cell-derived-extracellular-matrix-from-rat-bone-marrow-stem-cells-culture-for-bone-tissue-engineering
#13
Boram Kim, Reiza Ventura, Byong-Taek Lee
The potential of decellularized cell-derived ECM deposited on biphasic calcium phosphate (BCP) scaffold for bone tissue engineering was investigated. Rat derived bone marrow mesenchymal stem cells (RBMSCs) were cultured on porous BCP scaffolds for 3 weeks and decellularized with two different methods (freeze-thaw (F/T) or sodium dodecyl sulfate (SDS)). The decellularized ECM deposited scaffolds (dECM-BCP) were characterized through scanning electron microscopy, energy dispersive X-ray spectrometer, and confocal microscopy...
July 28, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28744615/stem-cell-mediated-functionalization-of-titanium-implants
#14
Deanna Ingrassia, Martina Sladkova, Michael Palmer, Wei Xia, Håkan Engqvist, Giuseppe Maria de Peppo
Prosthetic implants are used daily to treat edentulous people and to restore mobility in patients affected by skeletal defects. Titanium (Ti) is the material of choice in prosthetics, because it can form a stable bond with the surrounding bone following implantation-a process known as osseointegration. Yet, full integration of prosthetic implants takes time, and fails in clinical situations characterized by limited bone quantity and/or compromised regenerative capacity, and in at-risk patients. Intense research efforts are thus made to develop new implants that are cost-effective, safe, and suited to every patient in each clinical situation...
September 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28743639/bidirectional-mechanobiology-between-cells-and-their-local-extracellular-matrix-probed-by-atomic-force-microscopy
#15
REVIEW
Jordi Alcaraz, Jorge Otero, Ignasi Jorba, Daniel Navajas
There is growing recognition that the mechanical interactions between cells and their local extracellular matrix (ECM) are central regulators of tissue development, homeostasis, repair and disease progression. The unique ability of atomic force microscopy (AFM) to probe quantitatively mechanical properties and forces at the nanometer or micrometer scales in all kinds of biological samples has been instrumental in the recent advances in cell and tissue mechanics. In this review we illustrate how AFM has provided important insights on our current understanding of the mechanobiology of cells, ECM and cell-ECM bidirectional interactions, particularly in the context of soft acinar tissues like the mammary gland or pulmonary tissue...
July 22, 2017: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/28742686/bioengineering-a-human-face-graft-the-matrix-of-identity
#16
Jérôme Duisit, Louis Maistriaux, Adriano Taddeo, Giuseppe Orlando, Virginie Joris, Emmanuel Coche, Catherine Behets, Jan Lerut, Chantal Dessy, Giulio Cossu, Esther Vögelin, Robert Rieben, Pierre Gianello, Benoît Lengelé
OBJECTIVE: During the last decade, face allotransplantation has been shown to be a revolutionary reconstructive procedure for severe disfigurements. However, offer to patients remains limited due to lifelong immunosuppression. To move forward in the field, a new pathway in tissue engineering is proposed. BACKGROUND: Our previously reported technique of matrix production of a porcine auricular subunit graft has been translated to a human face model. METHODS: 5 partial and 1 total face grafts were procured from human fresh cadavers...
July 24, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28741725/cell-derived-micro-environment-helps-dental-pulp-stem-cells-promote-dental-pulp-regeneration
#17
Xuexin Zhang, Hui Li, Jingjing Sun, Xiangyou Luo, Hefeng Yang, Li Xie, Bo Yang, Weihua Guo, Weidong Tian
OBJECTIVES: The function of the dental pulp is closely connected to the extracellular matrix (ECM) structure, and ECM has received significant attention due to its biological functions for regulating cells. As such, the interaction between the ECM niche and cells is worth exploring for potential clinical uses. MATERIALS AND METHODS: In this study, dental pulp stem cell (DPSC)-derived ECM (DPM) was prepared through cell culture and decellularization to function as the cell niche, and changes in DPSC behaviour and histological analysis of dental pulp tissue regeneration were evaluated following the DPM culture...
July 25, 2017: Cell Proliferation
https://www.readbyqxmd.com/read/28740514/normal-versus-pathological-cardiac-fibroblast-derived-extracellular-matrix-differentially-modulates-cardiosphere-derived-cell-paracrine-properties-and-commitment
#18
Francesca Pagano, Francesco Angelini, Clotilde Castaldo, Vittorio Picchio, Elisa Messina, Sebastiano Sciarretta, Ciro Maiello, Giuseppe Biondi-Zoccai, Giacomo Frati, Franca di Meglio, Daria Nurzynska, Isotta Chimenti
Human resident cardiac progenitor cells (CPCs) isolated as cardiosphere-derived cells (CDCs) are under clinical evaluation as a therapeutic product for cardiac regenerative medicine. Unfortunately, limited engraftment and differentiation potential of transplanted cells significantly hamper therapeutic success. Moreover, maladaptive remodelling of the extracellular matrix (ECM) during heart failure progression provides impaired biological and mechanical signals to cardiac cells, including CPCs. In this study, we aimed at investigating the differential effect on the phenotype of human CDCs of cardiac fibroblast-derived ECM substrates from healthy or diseased hearts, named, respectively, normal or pathological cardiogel (CG-N/P)...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28739545/an-optimized-non-destructive-protocol-for-testing-mechanical-properties-in-decellularized-rabbit-trachea
#19
M Den Hondt, B M Vanaudenaerde, E F Maughan, C R Butler, C Crowley, E K Verbeken, S E Verleden, J J Vranckx
Successful tissue-engineered tracheal transplantation relies on the use of non-immunogenic constructs, which can vascularize rapidly, support epithelial growth, and retain mechanical properties to that of native trachea. Current strategies to assess mechanical properties fail to evaluate the trachea to its physiological limits, and lead to irreversible destruction of the construct. Our aim was to develop and evaluate a novel non-destructive method for biomechanical testing of tracheae in a rabbit decellularization model...
July 21, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28736690/decellularization-of-human-internal-mammary-artery-biomechanical-properties-and-histopathological-evaluation
#20
Abdol-Mohammad Kajbafzadeh, Reza Khorramirouz, Seyede Maryam Kameli, Javad Hashemi, Amin Bagheri
This study undertook to create small-diameter vascular grafts and assess their structure and mechanical properties to withstand arterial implantation. Twenty samples of intact human internal mammary arteries (IMAs) were collected and decellularized using detergent-based methods. To evaluate residual cellular and extracellular matrix (ECM) components, histological analysis was performed. Moreover, collagen typing and ECM structure were analyzed by Picrosirius red and Movat's pentachrome staining. Scanning electron microscopy was also applied to assess microarchitecture of both endothelial and adventitial surfaces of native and decellularized arterial samples...
2017: BioResearch Open Access
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