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Adipose stem cells

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https://www.readbyqxmd.com/read/29471171/triggering-the-activation-of-activin-a-type-ii-receptor-in-human-adipose-stem-cells-towards-tenogenic-commitment-using-mechanomagnetic-stimulation
#1
A I Gonçalves, M Rotherham, H Markides, M T Rodrigues, R L Reis, M E Gomes, A J El Haj
Stem cell therapies hold potential to stimulate tendon regeneration and homeostasis, which is maintained in response to the native mechanical environment. Activins are members of the mechano-responsive TGF-β superfamily that participates in the regulation of several downstream biological processes. Mechanosensitive membrane receptors such as activin can be activated in different types of stem cells via magnetic nanoparticles (MNPs) through remote magnetic actuation resulting in cell differentiation. In this work, we target the Activin receptor type IIA (ActRIIA) in human adipose stem cells (hASCs), using anti-ActRIIA functionalized MNPs, externally activated through a oscillating magnetic bioreactor...
February 19, 2018: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/29471105/icariin-doped-bioactive-glasses-seeded-with-rat-adipose-derived-stem-cells-to-promote-bone-repair-via-enhanced-osteogenic-and-angiogenic-activities
#2
Xingzhi Jing, Weifeng Yin, Hongtao Tian, Mengcun Chen, Xudong Yao, Wentao Zhu, Fengjing Guo, Yaping Ye
AIMS: Cell communication between mesenchymal stem cells and blood vessel cells are crucial for bone repair. We have previously shown that the phyto-molecule icariin significantly promoted osteogenic differentiation of rat adipose-derived stem cells (ASCs). In the present study, we aimed to investigate the relationship between icariin induced osteogenic differentiation of ASCs and angiogenesis of rat endothelial progenitor cells (EPCs). Besides, we used icariin doped 45S5 Bioglass seeded with ASCs to promote bone healing in rat calvarial bone defect models...
February 19, 2018: Life Sciences
https://www.readbyqxmd.com/read/29468805/aligned-nanofiber-material-supports-cell-growth-and-increases-osteogenesis-in-canine-adipose-derived-mesenchymal-stem-cells-in-vitro
#3
Sony Pandey, Kusum Rathore, Jed Johnson, Maria Cekanova
Tissue engineering shows great promise for the treatment of degenerative diseases, including bone repair. Polymer nanofibers provide a three-dimensional (3-D) scaffold for attachment and growth of mesenchymal stem cells. Increasing evidence supports that fiber alignment on scaffolds plays a major role in the viability and differentiation of stem cells. We compared the cell viability of canine adipose tissue-derived mesenchymal stem cells (cADMSCs) cultured in the aligned- (NanoAligned™) and random- (NanoECM™) oriented polycaprolactone (PCL) nanofiber-coated plates to control polystyrene tissue culture plates using a proliferation assay...
February 22, 2018: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/29467010/human-adipose-derived-stem-cells-inhibit-bioactivity-of-keloid-fibroblasts
#4
Xiuxia Wang, Yan Ma, Zhen Gao, Jun Yang
BACKGROUND: A keloid is a fibroproliferative disorder occurring in wounds characterized by an exaggerated response to injury. To date, no effective cure has been identified. As multipotent stem cells, human adipose-derived stem cells (ADSCs) may show the possibility for curing diseases such as fibrosis. This study sought to explore the potential role of human ADSCs in curing keloids. METHODS: After culture in conditioned medium, gene and protein expression of keloid fibroblasts was examined using real-time polymerase chain reaction (RT-PCR) and Western blotting, while analysis of the cell cycle was used to measure the proliferative properties of the cells...
February 21, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29464508/long-noncoding-rnas-new-players-in-the-osteogenic-differentiation-of-bone-marrow-and-adipose-derived-mesenchymal-stem-cells
#5
REVIEW
Qiaolin Yang, Lingfei Jia, Xiaobei Li, Runzhi Guo, Yiping Huang, Yunfei Zheng, Weiran Li
Mesenchymal stem cells (MSCs) are an important population of multipotent stem cells that differentiate into multiple lineages and display great potential in bone regeneration and repair. Although the role of protein-coding genes in the osteogenic differentiation of MSCs has been extensively studied, the functions of noncoding RNAs in the osteogenic differentiation of MSCs are unclear. The recent application of next-generation sequencing to MSC transcriptomes has revealed that long noncoding RNAs (lncRNAs) are associated with the osteogenic differentiation of MSCs...
February 20, 2018: Stem Cell Reviews
https://www.readbyqxmd.com/read/29464159/the-use-of-vibrational-energy-to-isolate-adipose-derived-stem-cells
#6
Jonathan D Packer, Wen-Teh Chang, Jason L Dragoo
Background: Adipose-derived stem cell (ADSC)-based treatments have the potential to treat numerous soft-tissue pathologies. It would be beneficial to develop an efficient and reliable intraoperative, nonenzymatic method of isolating ADSCs for clinical use. This study aims to determine the (1) viability and proliferative capacity of ADSCs after exposure to vibrational energies and (2) efficacy of vibrational energy as a method of ADSC isolation from surgically harvested infrapatellar fat pad (IFP)...
January 2018: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/29463042/promotion-of-vascular-morphogenesis-of-endothelial-cells-co-cultured-with-human-adipose-derived-mesenchymal-stem-cells-using-polycaprolactone-gelatin-nanofibrous-scaffolds
#7
Yun-Min Kook, Hyerim Kim, Sujin Kim, Chan Yeong Heo, Min Hee Park, Kangwon Lee, Won-Gun Koh
New blood vessel formation is essential for tissue regeneration to deliver oxygen and nutrients and to maintain tissue metabolism. In the field of tissue engineering, in vitro fabrication of new artificial vessels has been a longstanding challenge. Here we developed a technique to reconstruct a microvascular system using a polycaprolactone (PCL)/gelatin nanofibrous structure and a co-culture system. Using a simple electrospinning process, we fabricated three-dimensional mesh scaffolds to support the sprouting of human umbilical vein endothelial cells (HUVECs) along the electrospun nanofiber...
February 18, 2018: Nanomaterials
https://www.readbyqxmd.com/read/29462806/hgf-and-bfgf-secretion-by-human-adipose-derived-stem-cells-improves-ovarian-function-during-natural-aging-via-activation-of-the-sirt1-foxo1-signaling-pathway
#8
Chenyue Ding, Qinyan Zou, Fuxin Wang, Huihua Wu, Wei Wang, Hong Li, Boxian Huang
BACKGROUND/AIMS: Human adipose-derived stem cells (hADSCs) are a potential therapeutic option for clinical applications because of their ability to produce cytokines and their capacity for trilineage differentiation. To date, few researchers have investigated the effects of hADSCs on natural ovarian aging (NOA). METHODS: An NOA mouse model and human ovarian granule cells (hGCs) collected from individuals with NOA were prepared to assess the therapeutic effects and illuminate the mechanism of hADSCs in curing NOA...
February 15, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29458140/hyaluronan-in-adipogenesis-adipose-tissue-physiology-and-systemic-metabolism
#9
REVIEW
Yi Zhu, Ilja L Kruglikov, Yucel Akgul, Philipp E Scherer
Hyaluronic acid (HA, also known as hyaluronan), is a non-sulfated linear glycosaminoglycan polymer consisting of repeating disaccharide units of d-glucuronic acid and N-acetyl-d-glucosamine abundantly present in the extracellular matrix. The sizes of hyaluronic acid polymers range from 5000 to 20,000,000 Da in vivo, and the functions of HA are largely dictated by its size. Due to its high biocompatibility, HA has been commonly used as soft tissue filler as well as a major component of biomaterial scaffolds in tissue engineering...
February 16, 2018: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29457847/preconditioning-with-low-level-laser-irradiation-enhances-the-therapeutic-potential-of-human-adipose-derived-stem-cells-in-a-mouse-model-of-photoaged-skin
#10
Xuan Liao, Sheng-Hong Li, Guang-Hui Xie, Shan Xie, Li-Ling Xiao, Jian-Xing Song, Hong-Wei Liu
The present study was conducted to explore the therapeutic potential of human adipose-derived stem cells (ADSCs) irradiated with a low level laser (LLL). Cultured ADSCs were treated with 650-nm GaAlAs laser irradiation at 2, 4, and 8 J/cm2 . Cell proliferation was quantified by MTT assays, cytokine secretion was determined by enzyme-linked immunosorbent assays, and adipogenic differentiation was examined by oil red O staining. Additionally, the expression profiles of putative ADSC surface markers were analyzed by quantitative real-time PCR...
February 19, 2018: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/29457376/delivery-of-allogeneic-adipose-stem-cells-in-polyethylene-glycol-fibrin-hydrogels-as-an-adjunct-to-meshed-autografts-after-sharp-debridement-of-deep-partial-thickness-burns
#11
David M Burmeister, Randolph Stone, Nicole Wrice, Alfred Laborde, Sandra C Becerra, Shanmugasundaram Natesan, Robert J Christy
Harvesting of autografts results in donor site morbidities and is limited in scenarios such as large total body surface area burns. In these instances, coverage is increased by meshing grafts at the expense of delayed biologic closure. Moreover, graft meshing increases the likelihood of contraction and hypertrophic scarring, limits range of motion, and worsens cosmesis. Many tissue engineering technologies have touted the promise of adipose-derived stem cells (ASCs) for burn wounds. The primary objective of the current study was to determine feasibility and efficacy of in situ ASC delivery via PEGylated fibrin (FPEG) hydrogels as adjuncts to meshed split thickness skin grafts in a porcine model...
February 18, 2018: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/29456819/comparison-of-the-efficacy-of-piascledine-and-transforming-growth-factor-%C3%AE-1-on-chondrogenic-differentiation-of-human-adipose-derived-stem-cells-in-fibrin-and-fibrin-alginate-scaffolds
#12
Batool Hashemibeni, Ali Valiani, Mojtaba Esmaeli, Mohammad Kazemi, Maryam Aliakbari, Farhad Golshan Iranpour
Objectives: The aim of this study was to compare the chondrogenic induction potential of Piascledine and TGF-β1 on adipose-derived stem cells (ADSCs) in fibrin and fibrin-alginate scaffolds. Materials and Methods: Human subcutaneous adipose tissues were harvested from three patients who were scheduled to undergo liposuction. Isolated ADSCs were proliferated in a culture medium. Then, the cells were seeded in fibrin or fibrin-alginate scaffolds and cultured for 14 days in a chondrogenic medium containing Piascledine, TGF-β1, or both...
February 2018: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/29455245/chronic-hyperinsulinemia-induced-mir-27b-is-linked-to-adipocyte-insulin-resistance-by-targeting-insulin-receptor
#13
Ankita Srivastava, Kripa Shankar, Muheeb Beg, Sujith Rajan, Abhishek Gupta, Salil Varshney, Durgesh Kumar, Sanchita Gupta, Raj Kumar Mishra, Anil Nilkanth Gaikwad
Defect in insulin signaling leads to the development of insulin resistance followed by type 2 diabetes. Exploiting our previously developed physiological chronic hyperinsulinemia (CI)-mediated insulin resistance (IR) model, we wanted to understand how miRNAs contribute to the development of IR. Amongst the identified and validate miRNAs, the expression of miR-27b was found to be highly upregulated during CI-induced IR in 3T3-L1 adipocytes. We also validated the expression of miR-27b in CI-induced IR in human mesenchymal stem cell (hMSC)-derived adipocytes and in vivo high fat diet (HFD)-induced IR mice model...
February 17, 2018: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/29454158/polyisocyanopeptide-hydrogels-a-novel-thermo-responsive-hydrogel-supporting-pre-vascularization-and-the-development-of-organotypic-structures
#14
Jakub Zimoch, Joan Simó Padial, Agnes S Klar, Queralt Vallmajo-Martin, Martin Meuli, Thomas Biedermann, Christopher J Wilson, Alan Rowan, Ernst Reichmann
Molecular and mechanical interactions with the 3D extracellular matrix are essential for cell functions such as survival, proliferation, migration, and differentiation. Thermo-responsive biomimetic polyisocyanopeptide (PIC) hydrogels are promising new candidates for 3D cell, tissue, and organ cultures. This is a synthetic, thermo-responsive and stress-stiffening material synthesized via polymerization of the corresponding monomers using a nickel perchlorate as a catalyst. It can be tailored to meet various demands of cells by modulating its stiffness and through the decoration of the polymer with short GRGDS peptides using copper free click chemistry...
February 14, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29453764/comparative-analysis-of-human-ucb-and-adipose-tissue-derived-mesenchymal-stem-cells-for-their-differentiation-potential-into-brown-and-white-adipocytes
#15
Afrooz Rashnonejad, Gulinnaz Ercan, Cumhur Gunduz, Ali Akdemir, Yigit Ozer Tiftikcioglu
The differentiation potential of umbilical cord blood-derived mesenchymal stem cells (UCB-MSCs) into brown and white adipocytes in comparison to Adipose tissue derived MSCs (AD-MSCs) were investigated in order to characterize their potency for future cell therapies. MSCs were isolated from ten UCB samples and six liposuction materials. MSCs were differentiated into white and brown adipocytes after characterization by flow cytometry. Differentiated adipocytes were stained with Oil Red O and hematoxylin/eosin...
February 16, 2018: Molecular Biology Reports
https://www.readbyqxmd.com/read/29452233/role-of-adipose-tissue-derived-stem-cells-differentiated-into-insulin-producing-cells-in-the-treatment-of-type-i-diabetes-mellitus
#16
Mona G Amer, Azza S Embaby, Rehab A Karam, Marwa G Amer
Generation of new β cells is an important approach in the treatment of type 1 diabetes mellitus (type 1 DM). Adipose tissue-derived stem cells (ADSCs) might be one of the best sources for cell replacement therapy for diabetes. Therefore, this work aimed to test the possible role of transplanted insulin-producing cells (IPCs) differentiated from ADSCs in treatment of streptozotocin (STZ) induced type I DM in rats. Type 1 DM was induced by single intra peritoneal injection with STZ (50 mg/kg BW). Half of the diabetic rats were left without treatment and the other half were injected with differentiated IPCs directly into the pancreas...
February 13, 2018: Gene
https://www.readbyqxmd.com/read/29451213/bone-marrow-derived-mesenchymal-stem-cells-versus-adipose-derived-mesenchymal-stem-cells-for-peripheral-nerve-regeneration
#17
Marcela Fernandes, Sandra Gomes Valente, Rodrigo Guerra Sabongi, João Baptista Gomes Dos Santos, Vilnei Mattioli Leite, Henning Ulrich, Arthur Andrade Nery, Maria José da Silva Fernandes
Studies have confirmed that bone marrow-derived mesenchymal stem cells (MSCs) can be used for treatment of several nervous system diseases. However, isolation of bone marrow-derived MSCs (BMSCs) is an invasive and painful process and the yield is very low. Therefore, there is a need to search for other alterative stem cell sources. Adipose-derived MSCs (ADSCs) have phenotypic and gene expression profiles similar to those of BMSCs. The production of ADSCs is greater than that of BMSCs, and ADSCs proliferate faster than BMSCs...
January 2018: Neural Regeneration Research
https://www.readbyqxmd.com/read/29448915/shear-conditioning-of-adipose-stem-cells-for-reduced-platelet-binding-to-engineered-vascular-grafts
#18
Anh La, Robert T Tranquillo
Conferring anti-thrombogenicity to tissue-engineered vascular grafts remains a major challenge, especially for urgent bypass grafting that excludes approaches based on expanding autologous endothelial cells that requires weeks of cell culture. Adipose-derived stem cells are available from most patients in sufficient number for coronary bypass graft seeding and may be effective as allogeneic cells. We thus compared the adhesion and platelet binding of human adipose-derived stem cells that were shear-conditioned with steady and pulsatile shear stress after seeding the cells on a biologically-engineered matrix suitable for arterial grafts...
February 16, 2018: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/29448839/role-of-growth-factors-and-biomaterials-in-wound-healing
#19
Farshad Zarei, Maryam Soleimaninejad
Wound healing is a biological complex process that involves several cell types under the control and regulation of several growth factors and cytokines. There have been efforts to study the therapeutic effects of granulocyte-macrophage colony-stimulating factor, platelet-derived growth factor, transforming growth factor-β, vascular endothelial growth factor and basic fibroblast growth factor on chronic wounds. In addition, the effects of biomaterials such as nano-fibrous chitin and chitosan have been proven to be effective on wound healing...
February 15, 2018: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29448017/fetal-bovine-serum-free-cryopreservation-methods-for-clinical-banking-of-human-adipose-derived-stem-cells
#20
Seah Park, Dong Ryul Lee, Ji Sun Nam, Chul Woo Ahn, Haekwon Kim
The use of fetal bovine serum (FBS) as a cryopreservation supplement is not suitable for the banking of mesenchymal stem cells (MSCs) due to the risk of transmission of disease as well as xenogeneic immune reactions in the transplanted host. Here, we investigated if human serum albumin (HSA), human serum (HS), or knockout serum replacement (KSR) can replace FBS for the cryopreservation of MSCs. In addition, we examined the characteristics of MSCs after multiple rounds of cryopreservation. Human adipose-derived stem cells (ASCs) cryopreserved with three FBS replacements, 9% HSA, 90% HS, or 90% KSR, in combination with 10% dimethyl sulfoxide (Me 2 SO) maintained stem cell properties including growth, immunophenotypes, gene expression patterns, and the potential to differentiate into adipogenic, osteogenic, and chondrogenic lineages, similar to ASCs frozen with FBS...
February 12, 2018: Cryobiology
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