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Adipose stem cells

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https://www.readbyqxmd.com/read/28549605/wnt3a-and-the-induction-of-the-osteogenic-differentiation-in-adipose-tissue-derived-mesenchymal-stem-cells
#1
C Morsczeck, A Reck, T E Reichert
Adipose tissue derived stem cells (ASCs) can easily be isolated, but the osteogenic differentiation potential is limited. To improve this differentiation potential, more investigations are required about signaling proteins for the induction of the osteogenic differentiation. This study focused on the WNT3A protein, because little is known about the canonical WNT signaling pathway and the osteogenic differentiation of ASCs. The alkaline phosphatase (ALP) activity was measured for the evaluation of the osteogenic differentiation...
May 12, 2017: Tissue & Cell
https://www.readbyqxmd.com/read/28549587/neuronally-differentiated-adipose-derived-stem-cells-and-aligned-phbv-nanofiber-nerve-scaffolds-promote-sciatic-nerve-regeneration
#2
Feihu Hu, Xiaofeng Zhang, Haixia Liu, Peng Xu, Doulathunnisa, Gaojun Teng, Zhongdang Xiao
Through a combination of biomaterials and stem cells, tissue engineering strategies for restoring and regenerating damaged peripheral nerves have recently been used to meet the challenges posed by nerve injury. In a previous study, we revealed a new way to induce neuronal differentiation of stem cells based on the temporally sequential use of miR-218 and Fibroblast Growth Factor 2 (FGF2) in vitro (FGF2-miR-218 induction approach). In the present study, we sought to investigate the application of this novel approach in repairing sciatic nerve damage in vivo...
May 23, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28546919/cell-viability-and-extracellular-matrix-synthesis-in-a-co-culture-system-of-corneal-stromal-cells-and-adipose-derived-mesenchymal-stem-cells
#3
Ting Shen, Jiang Shen, Qing-Qing Zheng, Qiu-Shi Li, Hai-Lan Zhao, Lei Cui, Chao-Yang Hong
AIM: To investigate the impact of adipose-derived mesenchymal stem cells (ADSCs) on cell viability and extracellular matrix (ECM) synthesis of corneal stromal cells (CSCs). METHODS: ADSCs and CSCs were obtained from the corneas of New Zealand white rabbits and indirectly co-cultured in vitro. The proliferative capacity of CSCs in the different groups was assessed by CCK-8 assays. Annexin V-fluorescein isothiocyanate (FITC)/proliferation indices (PI) assays were used to detect the apoptosis of CSCs...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28546469/green-tea-egcg-enhances-cardiac-function-restoration-through-expression-of-survival-signaling-in-dm-rats-with-autologous-adipose-tissue-derived-stem-cell
#4
Tung-Sheng Chen, Show-Yih Liou, Chia-Hua Kuo, Lung-Fa Pan, Yu-Lan Yeh, Jeffery Liou, V Vijaya Padma, Chun-Hsu Yao, Wei-Wen Kuo, Chih-Yang Huang
The present study tests a hypothesis that cardioprotective effects mediated by autologous adipose-derived stem cells (ADSC) in rats afflicted with insulin-dependent diabetes mellitus (IDDM), may be synergistically enhanced by oral treatment with green tea epigallocatechin gallat (ECCG). Wistar rats were divided into sham, DM, DM+ADSC (autologous transplanted 1x106 cells/rat) and DM+ADSC+E (E, green tea oral administration EGCG). Heart tissues were isolated for all rats and investigations were performed after 2-months treatment...
May 25, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28545495/the-impact-of-human-adipose-tissue-derived-stem-cells-on-breast-cancer-cells-implications-for-cell-assisted-lipotransfers-in-breast-reconstruction
#5
Eva Koellensperger, Lilly-Claire Bonnert, Inka Zoernig, Frederik Marmé, Stefanie Sandmann, Günter Germann, Felix Gramley, Uwe Leimer
BACKGROUND: In this study we evaluated the interactions of human adipose tissue-derived stem cells (ADSCs) and different human breast cancer cell lines (BRCAs) with regard to the safety of cell-assisted lipotransfers for breast reconstruction and a thereby unintended co-localization of ADSCs and BRCAs. METHODS: ADSCs were co-cultured with five different human BRCAs (MCF-7, MDA-MB-231, SK-BR-3, ZR-75-30, and EVSA-T) and primary BRCAs from one patient in a transwell system, and cell-cell-interactions were analyzed by assessing doubling time, migration and invasion, angiogenesis, quantitative real-time polymerase chain reaction (PCR) of more than 300 tumor-associated genes, and multiplex protein assays of 20 chemokines and growth factors and eight matrix metalloproteinases (MMPs)...
May 25, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28545230/nanog-plays-a-hierarchical-role-in-the-transcription-network-regulating-the-pluripotency-and-plasticity-of-adipose-tissue-derived-stem-cells
#6
Maria Pitrone, Giuseppe Pizzolanti, Laura Tomasello, Antonina Coppola, Lorenzo Morini, Gianni Pantuso, Romina Ficarella, Valentina Guarnotta, Sebastio Perrini, Francesco Giorgino, Carla Giordano
The stromal vascular cell fraction (SVF) of visceral and subcutaneous adipose tissue (VAT and SAT) has increasingly come into focus in stem cell research, since these compartments represent a rich source of multipotent adipose-derived stem cells (ASCs). ASCs exhibit a self-renewal potential and differentiation capacity. Our aim was to study the different expression of the embryonic stem cell markers NANOG (homeobox protein NANOG), SOX2 (SRY (sex determining region Y)-box 2) and OCT4 (octamer-binding transcription factor 4) and to evaluate if there exists a hierarchal role in this network in ASCs derived from both SAT and VAT...
May 23, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28544786/mir-122-modification-enhances-the-therapeutic-efficacy-of-adipose-tissue-derived-mesenchymal-stem-cells-against-liver-fibrosis
#7
Guohua Lou, Ying Yang, Feifei Liu, Bingjue Ye, Zhi Chen, Min Zheng, Yanning Liu
Mesenchymal stem cell (MSC) transplantation alone may be insufficient for treatment of liver fibrosis because of complicated histopathological changes in the liver. Given that miR-122 plays an essential role in liver fibrosis by negatively regulating the proliferation and transactivation of hepatic stellate cells (HSCs), this study investigated whether miR-122 modification can improve the therapeutic efficacy of adipose tissue-derived MSCs in treating liver fibrosis. MiR-122-modified AMSCs (AMSC-122) were constructed through lentivirus-mediated transfer of pre-miR-122...
May 24, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28542352/preconditioning-of-adipose-tissue-derived-mesenchymal-stem-cells-with-deferoxamine-increases-the-production-of-pro-angiogenic-neuroprotective-and-anti-inflammatory-factors-potential-application-in-the-treatment-of-diabetic-neuropathy
#8
Carolina Oses, Belén Olivares, Marcelo Ezquer, Cristian Acosta, Paul Bosch, Macarena Donoso, Patricio Léniz, Fernando Ezquer
Diabetic neuropathy (DN) is one of the most frequent and troublesome complications of diabetes mellitus. Evidence from diabetic animal models and diabetic patients suggests that reduced availability of neuroprotective and pro-angiogenic factors in the nerves in combination with a chronic pro-inflammatory microenvironment and high level of oxidative stress, contribute to the pathogenesis of DN. Mesenchymal stem cells (MSCs) are of great interest as therapeutic agents for regenerative purposes, since they can secrete a broad range of cytoprotective and anti-inflammatory factors...
2017: PloS One
https://www.readbyqxmd.com/read/28541365/responses-of-human-adipose-derived-stem-cells-to-interstitial-level-of-extremely-low-shear-flows-regarding-differentiation-morphology-and-proliferation
#9
Sung-Hwan Kim, Kihoon Ahn, Joong Yull Park
Human cells encounter a range of shear stress levels in situ and this natural variability in shear stress implies that realistic investigations of cell type characteristics may depend on nontrivial shear stress models. Human adipose-derived stem cells (hASCs) differentiate near the blood capillary vessels where interstitial flows predominate. However, the effects of interstitial levels of shear on hASCs are not fully understood. In this study, we propose a microfluidic shear generation system, in which a gradient distribution of the interstitial level of shear flow is created to investigate the effects of interstitial-level shear flow on hASCs...
May 25, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28539277/-efficacy-of-gamma-irradiated-adipose-derived-stem-cells-for-treatment-of-thin-endometrium-in-rats
#10
Ming-Xia Ye, Ling Yu, Shu-Fang Wang, Wen-Sheng Fan, Yuan-Guang Meng
OBJECTIVE: Transplantation of adipose-derived stem cells (ADSCs) is associated with potential risks of late complications including tumorigenesis due to the active proliferation of the cells. We aimed to test the effect of transplantation of ADSCs with suppressed proliferation by gamma irradiation in the treatment of thin endometrium in rats. METHODS: ADSCs were isolated from female SD rats and identified by detecting the surface antigens with flow cytometry. After exposure to gamma irradiation at 0, 5 Gy and 10 Gy, the cells were examined for changes in colony-forming ability...
May 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28538572/intratendinous-injection-of-hydrogel-for-reseeding-decellularized-human-flexor-tendons
#11
Chao Long, Michael G Galvez, Anais Legrand, Lydia-Marie Joubert, Zhen Wang, Arhana Chattopadhyay, James Chang, Paige M Fox
BACKGROUND: Decellularized cadaveric tendons are a potential source for reconstruction. Reseeding to enhance healing is ideal; however, cells placed on the tendon surface result in inadequate delivery. The authors used an injection technique to evaluate intratendinous cell delivery. METHODS: Decellularized tendons were reseeded with adipose-derived stem cells in culture, and injected with fetal bovine serum or hydrogel. PKH26-stained cells in cross-section were quantified...
June 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28537846/uremic-toxins-affect-the-imbalance-of-redox-state-and-overexpression-of-prolyl-hydroxylase-2-in-human-adipose-tissue-derived-mesenchymal-stem-cells-involved-in-wound-healing
#12
Vuong Cat Khanh, Kinuko Ohneda, Toshiki Kato, Toshiharu Yamashita, Fujio Sato, Kana Tachi, Osamu Ohneda
Chronic kidney disease (CKD) results in a delay in wound healing because of its complications such as uremia, anemia, and fluid overload. Mesenchymal stem cells (MSCs) are considered to be a candidate for wound healing because of the ability to recruit many types of cells. However, it is still unclear whether the CKD-adipose tissue-derived MSCs (CKD-AT-MSCs) have the same function in wound healing as healthy donor-derived normal AT-MSCs (nAT-MSCs). In this study, we found that uremic toxins induced elevated reactive oxygen species (ROS) expression in nAT-MSCs, resulting in the reduced expression of hypoxia-inducible factor-1α (HIF-1α) under hypoxic conditions...
May 24, 2017: Stem Cells and Development
https://www.readbyqxmd.com/read/28536871/impact-of-early-subcultures-on-stemness-migration-and-angiogenic-potential-of-adipose-tissue-derived-stem-cells-and-their-resistance-to-in-vitro-ischemic-condition
#13
Hossein Faghih, Arash Javeri, Masoumeh Fakhr Taha
Adipose tissue-derived stem cells (ADSCs) are capable of multipotential differentiation and express several angiogenic, anti-apoptotic and immunomodulatory markers. These features make adipose tissue as a promising source of stem cells for regenerative medicine. However, for efficient translational use, culture-induced changes in the gene expression profile and resistance of the ADSCs to ischemic environment should be taken into consideration. We compared the expression of some clinically important markers between the unpassaged and third-passaged ADSCs by RT-PCR, qPCR and flow cytometry...
May 23, 2017: Cytotechnology
https://www.readbyqxmd.com/read/28536700/fabrication-and-evaluation-of-electrospun-3d-bioplotted-and-combination-of-electrospun-3d-bioplotted-scaffolds-for-tissue-engineering-applications
#14
Liliana F Mellor, Pedro Huebner, Shaobo Cai, Mahsa Mohiti-Asli, Michael A Taylor, Jeffrey Spang, Rohan A Shirwaiker, Elizabeth G Loboa
Electrospun scaffolds provide a dense framework of nanofibers with pore sizes and fiber diameters that closely resemble the architecture of native extracellular matrix. However, it generates limited three-dimensional structures of relevant physiological thicknesses. 3D printing allows digitally controlled fabrication of three-dimensional single/multimaterial constructs with precisely ordered fiber and pore architecture in a single build. However, this approach generally lacks the ability to achieve submicron resolution features to mimic native tissue...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28536316/-adipose-stem-cell-system
#15
Yumiko Oishi, Ichiro Manabe
Adipose tissues are the major organ that controls systemic energy metabolism and maintain homeostasis by storing lipids, dissipating them as heat, and producing various adipokines. There are two major classes of adipocytes: white and brown adipocytes. White adipocytes store and release lipids, while brown adipocytes burn substrates to produce heat. In addition to classical brown adipose tissues consisting of brown adipocytes, cold exposure and β3 stimulation induce development of brown cell-like "beige" adipocytes in white adipose tissues...
2017: Clinical Calcium
https://www.readbyqxmd.com/read/28533959/preservation-media-durations-and-cell-concentrations-of-short-term-storage-affect-key-features-of-human-adipose-derived-mesenchymal-stem-cells-for-therapeutic-application
#16
Fengli Zhang, Huaijuan Ren, Xiaohu Shao, Chao Zhuang, Yantian Chen, Nianmin Qi
BACKGROUND: Adipose-derived mesenchymal stem cells (ADSCs) have shown great potential in the treatment of various diseases. However, the optimum short-term storage condition of ADSCs in 2∼8 °C is rarely reported. This study aimed at optimizing a short-term storage condition to ensure the viability and function of ADSCs before transplantation. METHODS: Preservation media and durations of storage were evaluated by cell viability, apoptosis, adhesion ability and colony-forming unit (CFU) capacity of ADSCs...
2017: PeerJ
https://www.readbyqxmd.com/read/28532902/adipose-derived-delivery-vehicle-for-encapsulated-adipogenic-factors
#17
Christopher M Mahoney, Arta Kelmindi-Doko, Malik J Snowden, J Peter Rubin, Kacey G Marra
Hydrogels derived from adipose tissue extracellular matrix (AdECM) have shown potential in the ability to generate new adipose tissue in vivo. To further enhance adipogenesis, a composite adipose derived delivery system (CADDS) containing single- and double-walled dexamethasone encapsulated microspheres (SW and DW Dex MS) has been developed. Previously, our laboratory has published the use of Dex MS as an additive to enhance adipogenesis and angiogenesis in adipose tissue grafts. In the current work, AdECM and CADDS are extensively characterized, in addition to conducting in vitro cell culture analysis...
May 19, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28532226/novel-biological-therapies-for-the-treatment-of-diabetic-foot-ulcers
#18
Jennifer Adeghate, Syed Nurulain, Kornélia Tekes, Erzsébet Fehér, Huba Kalász, Ernest Adeghate
The number of people with diabetes mellitus (DM) is estimated to exceed 640 million by the year 2040. Diabetic foot ulcer (DFU) is a debilitating illness that affects more than 2% of DM patients. DFU is caused by DM-induced neural and vascular lesions leading to a reduced sensation and microcirculation. The increase in the prevalence of DFU has prompted researchers to find new therapies for the management of DFU. Areas covered: This review presents the current status of novel biological therapies used in the treatment of DFU...
May 22, 2017: Expert Opinion on Biological Therapy
https://www.readbyqxmd.com/read/28531139/dual-component-gelatinous-peptide-reactive-oligomer-formulations-as-conduit-material-and-luminal-filler-for-peripheral-nerve-regeneration
#19
Caroline Kohn-Polster, Divya Bhatnagar, Derek J Woloszyn, Matthew Richtmyer, Annett Starke, Alexandra H Springwald, Sandra Franz, Michaela Schulz-Siegmund, Hilton M Kaplan, Joachim Kohn, Michael C Hacker
Toward the next generation of nerve guidance conduits (NGCs), novel biomaterials and functionalization concepts are required to address clinical demands in peripheral nerve regeneration (PNR). As a biological polymer with bioactive motifs, gelatinous peptides are promising building blocks. In combination with an anhydride-containing oligomer, a dual-component hydrogel system (cGEL) was established. First, hollow cGEL tubes were fabricated by a continuous dosing and templating process. Conduits were characterized concerning their mechanical strength, in vitro and in vivo degradation and biocompatibility...
May 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28530535/hair-regeneration-therapy-using-proteins-secreted-by-adipose-derived-stem-cells
#20
Hirotaro Fukuoka, Keigo Narita, Hirotaka Suga
Adipose-derived stem cells secrete various cytokines that promote hair growth. We have used adipose-derived stem cell-conditioned medium to treat alopecia and reported good results. In this article, we describe our experience of the hair regeneration therapy including characteristics of the commercialized conditioned medium, treatment methods, and future directions. Treatment using adipose-derived stem cell-conditioned medium is highly effective and may represent a new therapy for alopecia.
May 21, 2017: Current Stem Cell Research & Therapy
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