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Adipose derived stem cell

Arantza Infante, Clara I Rodríguez
Aging is a complex biological process, which involves multiple mechanisms with different levels of regulation. Senescent cells are known to secrete senescence-associated proteins, which exert negative influences on surrounding cells. Mesenchymal stem cells (MSCs), the common progenitors for bone, cartilage and adipose tissue (which are especially affected tissues in aging), are known to secrete a broad spectrum of biologically active proteins with both paracrine and autocrine functions in many biological processes...
March 15, 2018: Scientific Reports
David S Jevotovsky, Allyson R Alfonso, Thomas A Einhorn, Ernest S Chiu
OBJECTIVE: Osteoarthritis (OA) is a leading cause of disability in the world. Mesenchymal stem cells (MSCs) have been studied to treat OA. This review was performed to systematically assess the quality of literature and compare the procedural specifics surrounding MSC therapy for osteoarthritis. DESIGN: PubMed, CINAHL, EMBASE and Cochrane Central Register of Controlled Trials were searched for studies using MSCs for OA treatment (final search December 2017). Outcomes of interest included study evidence level, patient demographics, MSC protocol, treatment results and adverse events...
March 12, 2018: Osteoarthritis and Cartilage
Takeshi Akama, Tae-Hwa Chun
The visceral (VIS) and subcutaneous (SQ) fat pads are developmentally distinct white adipose tissue depots and contribute differently to inflammation and insulin resistance associated with obesity. The basic helix-loop-helix transcriptional regulator transcription factor 21 (TCF21) is a marker gene for white adipose tissues and is abundantly expressed in VIS-derived adipose stem cells (ASCs), but not in SQ-derived ASCs. However, TCF21's role in regulating fat depot-specific gene expression and function is incompletely understood...
March 14, 2018: Journal of Biological Chemistry
Simona Ceccarelli, Cristina Nodale, Enrica Vescarelli, Paola Pontecorvi, Valeria Manganelli, Giovanni Casella, Maria Giuseppina Onesti, Maurizio Sorice, Ferdinando Romano, Antonio Angeloni, Cinzia Marchese
Adipogenesis is regulated by a complex network of molecules, including fibroblast growth factors. Keratinocyte growth factor (KGF) has been previously reported to promote proliferation on rat preadipocytes, although the expression of its specific receptor, FGFR2-IIIb/KGFR, is not actually detected in mesenchymal cells. Here, we demonstrate that human adipose-derived stem cells (ASCs) show increased expression of KGF during adipogenic differentiation, especially in the early steps. Moreover, KGF is able to induce transient activation of ERK and p38 MAPK pathways in these cells...
2018: Stem Cells International
Annie C Bowles, Rachel M Wise, Brittany Y Gerstein, Robert C Thomas, Roberto Ogelman, Regan C Manayan, Bruce A Bunnell
BACKGROUND: The therapeutic efficacy of adipose-derived stem cells (ASCs) has been investigated for numerous clinical indications, including autoimmune and neurodegenerative diseases. Less is known using the crude adipose product called stromal vascular fraction (SVF) as therapy, although our previous studies demonstrated greater efficacy at late-stage disease compared to ASCs in the experimental autoimmune encephalomyelitis (EAE) mouse, a model of multiple sclerosis. In this study, SVF cells and ASCs were administered during the pathogenic progression, designated as early disease, to elucidate immunomodulatory mechanisms when high immune cell activities associated with autoimmune signaling occur...
March 13, 2018: Journal of Neuroinflammation
Chunlei Zhu, Suphannee Pongkitwitoon, Jichuan Qiu, Stavros Thomopoulos, Younan Xia
A hierarchically structured scaffold is designed and fabricated for facilitating tendon-to-bone repair. The scaffold is composed of three regions with distinct functions: (i) an array of channels to guide the in-growth of cells and aligned deposition of collagen fibers, as well as integration of the scaffold with the tendon side, (ii) a region with a gradient in mineral composition to facilitate stress transfer between tendon and bone, and (iii) a mineralized inverse opal region to promote the integration of the scaffold with the underlying bone...
March 13, 2018: Advanced Materials
Maryam Bahrami, Ali Valiani, Noushin Amirpour, Mohammad Zamani Ra Rani, Batool Hashemibeni
Background: Nowadays, cartilage tissue engineering is the best candidate for regeneration of cartilage defects. This study evaluates the function of herbal extracts icariin (ICA), the major pharmacological constituent of herba Epimedium , compared with transforming growth factor β3 (TGFβ3) to prove its potential effect for cartilage tissue engineering. Materials and Methods: ICA, TGFβ3, and TGFβ3 + ICA were added fibrin-cell constructions derived from adipose tissue stem cells...
2018: Advanced Biomedical Research
Zicheng Wang, Haili Li, Li Cheng, Zhongyuan Zhang, Hao Wang, Tongde Lv, Jian Lin, Liqun Zhou
Background: Human adipose-derived stem cells (hASCs) have been shown to have immunoregulatory properties in many studies. However, the mechanisms remain unknown. miRNAs are associated with many cellular processes, including immune responses. Thus, we hypothesized that miRNAs act as immunoregulators when hASCs are stimulated by inflammatory environments. Methods: A set of cytokines was used to stimulate the hASCs in the cytokine group, while no cytokines were used to stimulate the cells in the normal group...
2018: Stem Cells International
Mazaher Gholipourmalekabadi, Alexander M Seifalian, Aleksandra M Urbanska, Mir Davood Omrani, John G Hardy, Zahra Madjd, Seyed Mahmoud Hashemi, Hossein Ghanbarian, Peiman Brouki Milan, Masoud Mozafari, Rui L Reis, Subhas C Kundu, Ali Samadikuchaksaraei
Severe burn injuries can lead to delay in healing and devastating scar formation. Attempts are made to develop a suitable skin substitute for scarless healing of such skin wounds. Currently, there is no effective strategy yet for a complete scarless healing after the thermal injuries. In our recent work we fabricate and evaluated a 3D protein-based artificial skin made from decellularized human amniotic membrane (AM) and electrospun nanofibrous silk fibroin (ESF) in vitro. We also characterize both biophysical and cell culture investigation to establish in vitro performance of the developed bilayer scaffolds...
March 12, 2018: Biomacromolecules
Chakradhari Inampudi, Emmanuel Akintoye, Tomo Ando, Alexandros Briasoulis
Peripheral arterial disease (PAD) refers to narrowing of the peripheral arteries and atherosclerosis is the most important cause. In patients with PAD, revascularization is the preferred therapeutic strategy; nonetheless several patients are not deemed candidates for it due to advanced disease or several comorbidities. The main target of therapeutic angiogenesis is to promote development of new arterial vessels and improve perfusion of ischemic tissue. Angiogenic growth factors such as vascular endothelial growth factor (VEGF), fibroblast growth factor (FGF), hepatocyte growth factor (HGF), administered intramuscularly or intra-arterially, have been shown to promote angiogenesis and development of collateral vasculature in preclinical studies...
March 9, 2018: Current Opinion in Pharmacology
Marcus S Niepel, Fadi Almouhanna, Bhavya K Ekambaram, Matthias Menzel, Andreas Heilmann, Thomas Groth
BACKGROUND: Cells possess a specialized machinery through which they can sense physical as well as chemical alterations in their surrounding microenvironment that affect their cellular behavior. AIM: In this study, we aim to establish a polyelectrolyte multilayer system of 24 layers of poly-l-lysine and hyaluronic acid to control stem cell response after chemical cross-linking. METHODS AND RESULTS: The multilayer build-up process is monitored using different methods, which show that the studied polyelectrolyte multilayer system grows exponentially following the islands and islets theory...
February 1, 2018: International Journal of Artificial Organs
Yu Bin Lee, Eun Mi Kim, Hayeon Byun, Hyung-Kwan Chang, Kwanghee Jeong, Zachary M Aman, Yu Suk Choi, Jungyul Park, Heungsoo Shin
Numerous methods have been reported for the fabrication of 3D multi-cellular spheroids and their use in stem cell culture. Current methods typically relying on the self-assembly of trypsinized, suspended stem cells, however, show limitations with respect to cell viability, throughput, and accurate recapitulation of the natural microenvironment. In this study, we developed a new system for engineering cell spheroids by self-assembly of micro-scale monolayer of stem cells. We prepared synthetic hydrogels with the surface of chemically formed micropatterns (squares/circles with width/diameter of 200 μm) on which mesenchymal stem cells isolated from human nasal turbinate tissue (hTMSCs) were selectively attached and formed a monolayer...
March 1, 2018: Biomaterials
Baojin Ma, Jing Han, Shan Zhang, Feng Liu, Shicai Wang, Jiazhi Duan, Yuanhua Sang, Huaidong Jiang, Dong Li, Shaohua Ge, Jinghua Yu, Hong Liu
Controllable osteoinduction maintained in the original defect area is the key to precise bone repair. To meet the requirement of precise bone regeneration, a hydroxyapatite (HAp) nanobelt/polylactic acid (PLA) (HAp/PLA) Janus membrane has been successfully prepared in this study by coating PLA on a paper-like HAp nanobelt film by a casting-pervaporation method. The Janus membrane possesses dual functions: excellent osteoinduction from the hydrophilic HAp nanobelt side and barrier function originating from the hydrophobic PLA film...
March 7, 2018: Acta Biomaterialia
Sajeesh Kumar Madhurakkat Perikamana, Jinkyu Lee, Taufiq Ahmad, Eun Mi Kim, Hayeon Byun, Sangmin Lee, Heungsoo Shin
Tendon-bone interface tissue is extremely challenging to engineer because it exhibits complex gradients of structure, composition, biologics, and cellular phenotypes. As a step toward engineering these transitional zones, we initially analyzed how different (topographical or biological) cues affect tenogenic differentiation of adipose-derived stem cells (ADSCs). We immobilized platelet-derived growth factor - BB (PDGF-BB) using polydopamine (PD) chemistry on random and aligned nanofibers and investigated ADSC proliferation and tenogenic differentiation...
February 27, 2018: Biomaterials
Ting Shen, Qing-Qing Zheng, Jiang Shen, Qiu-Shi Li, Xing-Hui Song, Hong-Bo Luo, Chao-Yang Hong, Ke Yao
Background: Corneal stromal cells (CSCs) are components of the corneal endothelial microenvironment that can be induced to form a functional tissue-engineered corneal endothelium. Adipose-derived mesenchymal stem cells (ADSCs) have been reported as an important component of regenerative medicine and cell therapy for corneal stromal damage. We have demonstrated that the treatment with ADSCs leads to phenotypic changes in CSCs in vitro. However, the underlying mechanisms of such ADSC-induced changes in CSCs remain unclear...
March 20, 2018: Chinese Medical Journal
M Duran, A C M Luzo, J G de Souza, W J Favaro, P Garcia, N Duran
Graphene and graphene oxide topography have an effect on the fate of stem cells such as adhesion, differentiation, and proliferation. This overview clearly shows that a new design and manipulation of associated graphene oxide stem cell culture platforms are of paramount importance as a focus in stem cell to tissue engineering applications. This overview also proposes that a film of graphene oxide is an efficient platform to modulate structure and function of multipotent mesenchymal stem/stromal cells (MSCs) and in special human adipose tissue derived mesenchymal stromal/stem cells (AT-MSCs)...
March 7, 2018: Current Molecular Medicine
F Louwen, A Ritter, N N Kreis, J Yuan
Obesity is associated with a variety of disorders including cardiovascular diseases, diabetes mellitus and cancer. Obesity changes the composition and structure of adipose tissue, linked to pro-inflammatory environment, endocrine/metabolic dysfunction, insulin resistance and oxidative stress. Adipose-derived mesenchymal stem cells (ASCs) have multiple functions like cell renewal, spontaneous repair and homeostasis in adipose tissue. In this review article, we have summarized the recent data highlighting that ASCs in obesity are defective in various functionalities and properties including differentiation, angiogenesis, motility, multipotent state, metabolism and immunomodulation...
March 8, 2018: Obesity Reviews: An Official Journal of the International Association for the Study of Obesity
Tatiane Garcia Stancker, Stella Souza Vieira, Andrey Jorge Serra, Rafael do Nascimento Lima, Regiane Dos Santos Feliciano, José Antônio Silva, Solange Almeida Dos Santos, Marcia Ataize Dos Santos Vieira, Maíra Cecília Brandão Simões, Ernesto Cesar Leal-Junior, Paulo de Tarso Camillo de Carvalho
This study aimed to determine whether photobiomodulation therapy (PBMT) could improve the bioavailability and chondroprotective benefits of mesenchymal stem cells injected into the knees of rats used as an experimental model of osteoarthritis (OA) as well as reduce the expression of matrix metalloproteinases (MMPs) and degradation of type II collagen (COL2-1) in the cartilage. Adipose-derived stem/stromal cells (ADSCs) were collected from three male Fischer 344 rats and characterized by flow cytometry. Fifty female Fischer 344 rats were distributed into five groups of 10 animals each...
March 8, 2018: Lasers in Medical Science
Shan Zhang, Baojin Ma, Feng Liu, Jiazhi Duan, Shicai Wang, Jichuan Qiu, Dong Li, Yuanhua Sang, Chao Liu, Duo Liu, Hong Liu
Numerous studies have determined that physical cues, especially the nanotopography of materials, play key roles in directing stem cell differentiation. However, most research on nanoarrays for stem cell fate regulation are based on non-biodegradable materials, such as silicon wafers, TiO2, and poly (methyl methacrylate), which are rarely used as tissue engineering biomaterials. In this study, we prepared biodegradable poly-lactic acid (PLA) nanopillar arrays with different diameters but the same center-to-center distance using a series of anodic aluminum oxide nano-well arrays as templates...
March 8, 2018: Nano Letters
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