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https://www.readbyqxmd.com/read/28214341/angiopoietin-2-enhances-osteogenic-differentiation-of-bone-marrow-stem-cells
#1
Mi-Lan Kang, Eun-Ah Kim, Se-Young Jeong, Gun-Il Im
Our previous studies revealed that co-transplantation of bone marrow stem cells (BMSCs) and adipose-derived stem cells (ADSCs) can enhance bone regeneration and angiogenesis. However, it is unclear which genes are involved in the regulation of osteogenesis and/or angiogenesis during the co-culturing of BMSCs and ADSCs. The expression patterns of genes associated with osteogenesis and/or angiogenesis were analyzed in osteogenesis-induced BMSCs and ADSCs using an oligonucleotide microarray. Significant difference in the expression patterns of several genes were identified from hierarchical clustering and analyzed on co-cultured BMSCs and ADSCs...
February 18, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28213979/mmp-2-and-mmp-14-silencing-inhibits-vegfr2-cleavage-and-induces-the-differentiation-of-porcine-adipose-derived-mesenchymal-stem-cells-to-endothelial-cells
#2
Sami G Almalki, Yovani Llamas Valle, Devendra K Agrawal
The molecular mechanisms that control the ability of adipose-derived mesenchymal stem cells (AMSCs) to remodel three-dimensional extracellular matrix barriers during differentiation are not clearly understood. Herein, we studied the expression of matrix metalloproteinases (MMPs) during the differentiation of AMSCs to endothelial cells (ECs) in vitro. MSCs were isolated from porcine abdominal adipose tissue, and characterized by immunopositivity to CD44, CD90, CD105, and immunonegativity to CD14 and CD45. Plasticity of AMSCs was confirmed by multilineage differentiation...
February 18, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28211933/enhanced-bone-tissue-regeneration-using-a-3d-printed-microstructure-incorporated-with-a-hybrid-nano-hydrogel
#3
Dong Nyoung Heo, Nathan J Castro, Se-Jun Lee, Hanaul Noh, Wei Zhu, Lijie Grace Zhang
Three-dimensional (3D) functional constructs with biomimetic mechanical and chemical properties are ideal for various regenerative medicine applications. These properties of 3D fabricated constructs mainly depend on the intrinsic characteristics of the materials and fabrication method. In this respect, the current use of hydrogels for musculoskeletal tissue repair is not ideal due to the lack of suitable mechanical properties, as well as the high biomimetic requirement for success. To overcome this limitation, we developed a novel functionalized hydrogel with bioactive gold nanoparticles (GNPs), reinforcing a 3D printed microstructure via fused deposition modeling (FDM) for bone tissue regeneration...
February 17, 2017: Nanoscale
https://www.readbyqxmd.com/read/28211118/transcriptional-and-cell-cycle-alterations-mark-aging-of-primary-human-adipose-derived-stem-cells
#4
Xiaoyin Shan, Cleresa Roberts, Eun Ji Kim, Ariana Brenner, Gregory Grant, Ivona Percec
Adult stem cells play a critical role in the maintenance of tissue homeostasis and prevention of aging. While the regenerative potential of stem cells with low cellular turnover, such as adipose-derived stem cells (ASC), is increasingly recognized, the study of chronological aging in ASCs is technically difficult, and remains poorly understood. Here, we employ our model of chronological aging in primary human ASCs to examine genome-wide transcriptional networks. We demonstrate first that the transcriptome of aging ASCs is distinctly more stable than that of age-matched fibroblasts, and further, that age-dependent modifications in cell cycle progression and translation initiation specifically characterize aging ASCs in conjunction with increased nascent protein synthesis and a distinctly shortened G1 phase...
February 17, 2017: Stem Cells
https://www.readbyqxmd.com/read/28210976/regenerative-medicine-for-parkinson-s-disease-using-differentiated-nerve-cells-derived-from-human-buccal-fat-pad-stem-cells
#5
Haruka Takahashi, Hiroshi Ishikawa, Akira Tanaka
The purpose of this study was to evaluate the utility of human adipose stem cells derived from the buccal fat pad (hBFP-ASCs) for nerve regeneration. Parkinson's disease (PD) is a neurodegenerative disorder characterized by progressive death of dopaminergic neurons. PD is a candidate disease for cell replacement therapy because it has no fundamental therapeutic methods. We examined the properties of neural-related cells induced from hBFP-ASCs as a cell source for PD treatment. hBFP-ASCs were cultured in neurogenic differentiation medium for about 2 weeks...
February 16, 2017: Human Cell
https://www.readbyqxmd.com/read/28210226/combination-of-collagen-based-scaffold-and-bioactive-factors-induces-adipose-derived-mesenchymal-stem-cells-chondrogenic-differentiation-in-vitro
#6
Giovanna Calabrese, Stefano Forte, Rosario Gulino, Francesco Cefalì, Elisa Figallo, Lucia Salvatorelli, Eugenia T Maniscalchi, Giuseppe Angelico, Rosalba Parenti, Massimo Gulisano, Lorenzo Memeo, Raffaella Giuffrida
Recently, multipotent mesenchymal stem cells (MSCs) have attracted much attention in the field of regenerative medicine due to their ability to give rise to different cell types, including chondrocytes. Damaged articular cartilage repair is one of the most challenging issues for regenerative medicine, due to the intrinsic limited capability of cartilage to heal because of its avascular nature. While surgical approaches like chondral autografts and allografts provide symptoms and function improvement only for a short period, MSC based stimulation therapies, like microfracture surgery or autologous matrix-induced chondrogenesis demonstrate to be more effective...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28209525/stromal-vascular-fraction-shows-robust-wound-healing-through-high-chemotactic-and-epithelialization-property
#7
Dong-Sic Chae, Seongho Han, Mina Son, Sung-Whan Kim
BACKGROUND: Although human stromal vascular fraction (SVF) has been regarded as an attractive stem cell source, its therapeutic mechanism in wound healing has not been fully elucidated. AIMS: In this study, we investigated the molecular characteristics and therapeutic property of SVF for wound healing. METHODS: Microarray data showed that SVF cells are enriched with a higher level of wound healing or epithelium development-related genes and micro RNA...
February 13, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28206643/in-vivo-exposure-to-inorganic-arsenic-alters-differentiation-specific-gene-expression-of-adipose-derived-mesenchymal-stem-stromal-cells-in-c57bl-6j-mouse-model
#8
Joseph J Shearer, Manoel Figueiredo Neto, C Samuel Umbaugh, Marxa L Figueiredo
No abstract text is available yet for this article.
February 16, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28205638/effects-of-mir-146a-on-the-osteogenesis-of-adipose-derived-mesenchymal-stem-cells-and-bone-regeneration
#9
Qing Xie, Wei Wei, Jing Ruan, Yi Ding, Ai Zhuang, Xiaoping Bi, Hao Sun, Ping Gu, Zi Wang, Xianqun Fan
Increasing evidence has indicated that bone morphogenetic protein 2 (BMP2) coordinates with microRNAs (miRNAs) to form intracellular networks regulating mesenchymal stem cells (MSCs) osteogenesis. This study aimed to identify specific miRNAs in rat adipose-derived mesenchymal stem cells (ADSCs) during BMP2-induced osteogenesis, we selected the most significantly down-regulated miRNA, miR-146a, to systematically investigate its role in regulating osteogenesis and bone regeneration. Overexpressing miR-146a notably repressed ADSC osteogenesis, whereas knocking down miR-146a greatly promoted this process...
February 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28204820/hypoxia-enhances-the-wound-healing-potential-of-adipose-derived-stem-cells-in-a-novel-human-primary-keratinocyte-based-scratch-assay
#10
Simone Riis, Rhonda Newman, Hilal Ipek, Jens I Andersen, David Kuninger, Shayne Boucher, Mohan C Vemuri, Cristian P Pennisi, Vladimir Zachar, Trine Fink
Preclinical studies have suggested that paracrine factors from adipose-derived stem cells (ASCs) promote the healing of chronic wounds, and that the exposure of ASCs to hypoxia enhances their wound healing effect. To aid the translation of these findings into clinical use, robust wound models are necessary to explore each aspect of wound healing. The aspect of re-epithelization is often studied in a scratch assay based on transformed keratinocytes. However, there are concerns regarding the validity of this model, since these cell lines differ from normal keratinocytes, both in terms of proliferative capacity and differentiation, and sensitivity to environmental cues...
March 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28204811/isopsoralen-mediated-suppression-of-bone-marrow-adiposity-and-attenuation-of-the-adipogenic-commitment-of-bone-marrow-derived-mesenchymal-stem-cells
#11
Jian Wang, Sheng-Fa Li, Ting Wang, Chun-Han Sun, Liang Wang, Min-Jun Huang, Jian Chen, Shao-Wei Zheng, Nan Wang, Ying-Jun Zhang, Tian-Yu Chen
Osteoporosis (OP) increases the risk of bone fractures and other complications, and is thus a major clinical problem. In this study, we examined the effect of isopsoralen on the differentiation of bone-derived marrow mesenchymal stem cells (BMSCs) into osteoblasts and adipocytes, as well as bone formation under osteoporotic conditions. Primary femoral BMSCs isolated from C57BL/6 mice were used to evaluate the isopsoralen-mediated regulation of the expression of alkaline phosphatase (ALP), osteocalcin (OCN) and runt-related transcription factor 2 (RUNX2) during osteogenesis 2 weeks...
February 6, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28202997/-a-novel-tissue-engineered-bone-constructed-by-using-human-adipose-derived-stem-cells-and-biomimetic-calcium-phosphate-scaffold-coprecipitated-with-bone-morphogenetic-protein-2
#12
W R Jiang, X Zhang, Y S Liu, G Wu, Y J Ge, Y S Zhou
OBJECTIVE: To construct a novel biomimetic calcium phosphate (BioCaP) scaffold loaded with bone morphogenetic protein-2 (BMP-2), and to investigate its role in the osteogenesis of human adipose-derived stem cells (hASCs) in vitro and in vivo. METHODS: The BioCaP scaffold coprecipitated with BMP-2 (BMP-2-BioCaP) was constructed in this study. Field emission scanning electron microscopy (SEM) was used to analyze the morphology of the surfaces. The release kinetics was measured to evaluate the slow-release characteristics in vitro...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28202074/exendin-4-in-combination-with-adipose-derived-stem-cells-promotes-angiogenesis-and-improves-diabetic-wound-healing
#13
Eunhui Seo, Jae Soo Lim, Jin-Bum Jun, Woohyuk Choi, In-Sun Hong, Hee-Sook Jun
BACKGROUND: Diminished wound healing is a major complication of diabetes mellitus and can lead to foot ulcers. However, there are limited therapeutic methods to treat this condition. Exendin-4 (Ex-4), a glucagon-like peptide-1 receptor agonist, is known to have many beneficial effects on diabetes. In addition, mesenchymal stem cells are known to have wound healing effects. We investigated the effects of Ex-4 in combination with human adipose tissue-derived stem cells (ADSCs) on diabetic wound healing in a diabetic animal model...
February 15, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28201959/differentiation-potential-of-mesenchymal-stem-cells-derived-from-adipose-tissue-vs-bone-marrow-toward-annulus-fibrosus-cells-in-vitro
#14
Yifei Zhou, Xuqi Hu, Xuhao Zheng, Yaosen Wu, Naifeng Tian, Huazi Xu, Xiaolei Zhang
This study was to compare differentiation potential of bone marrow stem cells (BMSCs) and adipose-derived stem cells (ADSCs) from Sprague-Dawley rats towards annulus fibrosus (AF)-like cells. Using coculture plates with 0.4μm pore size polyethylene terephthalate (PET) track-etched inserts (Corning,USA), MSCs and AF cells were cocultured with direct cell-to-cell contact up till 21 days. We evaluated the AF markers expression at the histological level and molecular level. Quantitative reverse-transcription polymerase chain reaction (qRT-PCR) results showed up regulation in AF marker gene expressions of both two MSCs after coculture...
February 13, 2017: Current Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28198971/repair-of-bone-defects-using-adipose-derived-stem-cells-combined-with-alpha-tricalcium-phosphate-and-gelatin-sponge-scaffolds-in-a-rat-model
#15
Adriana Corsetti, Claudia Bahuschewskyj, Deise Ponzoni, Renan Langie, Luis Alberto Dos Santos, Melissa Camassola, Nance Beyer Nardi, Edela Puricelli
Objectives: This study aimed to evaluate the potential of adipose-derived stem cells (ASCs) combined with a modified α-tricalcium phosphate (α-TCP) or gelatin sponge (GS) scaffolds for bone healing in a rat model. Material and Methods: Bone defects were surgically created in the femur of adult SHR rats and filled with the scaffolds, empty or combined with ASCs. The results were analyzed by histology and histomorphometry on days seven, 14, 30, and 60. Results: Significantly increased bone repair was observed on days seven and 60 in animals treated with α-TCP/ASCs, and on day 14 in the group treated with GS/ASCs, when compared with the groups treated with the biomaterials alone...
January 2017: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/28198408/therapeutic-effects-of-human-adipose-tissue-derived-stem-cell-hadsc-transplantation-on-experimental-autoimmune-encephalomyelitis-eae-mice
#16
Jia Li, Ying Chen, Zhibo Chen, Yuanyuan Huang, Dehao Yang, Zhongqian Su, Yiyun Weng, Xiang Li, Xu Zhang
This study is to investigate the therapeutic effects of human adipose tissue-derived stem cell (hADSC) transplantation on experimental autoimmune encephalomyelitis (EAE) in mice. EAE mouse model was established by MOG35-55 immunization. Body weight and neurological function were assessed. H&E and LFB staining was performed to evaluate histopathological changes. Flow cytometry was used to detect Th17 and Treg cells. ELISA and real-time PCR were performed to determine transcription factor and pro-inflammatory cytokine levels...
February 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28197017/characterization-and-therapeutic-application-of-canine-adipose-mesenchymal-stem-cells-to-treat-elbow-osteoarthritis
#17
Éva Kriston-Pál, Ágnes Czibula, Zoltán Gyuris, Gyula Balka, Antal Seregi, Farkas Sükösd, Miklós Süth, Endre Kiss-Tóth, Lajos Haracska, Ferenc Uher, Éva Monostori
Visceral adipose tissue (AT) obtained from surgical waste during routine ovariectomies was used as a source for isolating canine mesenchymal stem cells (MSCs). As determined by cytofluorimetry, passage 2 cells expressed MSC markers CD44 and CD90 and were negative for lineage-specific markers CD34 and CD45. The cells differentiated toward osteogenic, adipogenic, and chondrogenic directions. With therapeutic aims, 30 dogs (39 joints) suffering from elbow dysplasia (ED) and osteoarthritis (OA) were intra-articularly transplanted with allogeneic MSCs suspended in 0...
January 2017: Canadian Journal of Veterinary Research, Revue Canadienne de Recherche Vétérinaire
https://www.readbyqxmd.com/read/28196035/perivascular-stem-cells-diminish-muscle-atrophy-following-massive-rotator-cuff-tears-in-a-small-animal-model
#18
Claire D Eliasberg, Ayelet Dar, Andrew R Jensen, Iain R Murray, Winters R Hardy, Tomasz J Kowalski, Cameron A Garagozlo, Kyle M Natsuhara, Adam Z Khan, Owen J McBride, Peter I Cha, Benjamin V Kelley, Denis Evseenko, Brian T Feeley, David R McAllister, Bruno Péault, Frank A Petrigliano
BACKGROUND: Rotator cuff tears are a common cause of shoulder pain and often necessitate operative repair. Muscle atrophy, fibrosis, and fatty infiltration can develop after rotator cuff tears, which may compromise surgical outcomes. This study investigated the regenerative potential of 2 human adipose-derived progenitor cell lineages in a murine model of massive rotator cuff tears. METHODS: Ninety immunodeficient mice were used (15 groups of 6 mice). Mice were assigned to 1 of 3 surgical procedures: sham, supraspinatus and infraspinatus tendon transection (TT), or TT and denervation via suprascapular nerve transection (TT + DN)...
February 15, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28194905/a-proinflammatory-secretome-mediates-the-impaired-immunopotency-of-human-mesenchymal-stromal-cells-in-elderly-patients-with-atherosclerosis
#19
Özge Kizilay Mancini, Maximilien Lora, Dominique Shum-Tim, Stephanie Nadeau, Francis Rodier, Inés Colmegna
Inflammation plays a pivotal role in the initiation and progression of atherosclerosis (ATH). Due to their potent immunomodulatory properties, mesenchymal stromal cells (MSCs) are evaluated as therapeutic tools in ATH and other chronic inflammatory disorders. Aging reduces MSCs immunopotency potentially limiting their therapeutic utility. The mechanisms that mediate the effect of age on MSCs immune-regulatory function remain elusive and are the focus of this study. Human adipose tissue-derived MSCs were isolated from patients undergoing coronary artery bypass graft surgery...
February 14, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28192115/substance-p-enhances-proliferation-and-paracrine-potential-of-adipose-derived-stem-cells-in-vitro
#20
Suna Kim, Jiyuan Piao, Youngsook Son, Hyun Sook Hong
Stem cells have tremendous promise to treat intractable diseases. Notably, adipose-derived stem cells (ADSCs) are actively being investigated because of ease of sampling and high repopulation capacity in vitro. ADSCs can exert a therapeutic effect through differentiation and paracrine potential, and these actions have been proven in many diseases, including cutaneous and inflammatory diseases. Transplantation of ADSCs necessitates therapeutic quantities and thus, long term ex vivo culture of ADSCs. However, this procedure can impair the activity of ADSCs and provoke cellular senescence, leading to low efficacy in vivo...
February 9, 2017: Biochemical and Biophysical Research Communications
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