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https://www.readbyqxmd.com/read/28323901/characterization-of-stromal-vascular-fraction-and-adipose-stem-cells-from-subcutaneous-preperitoneal-and-visceral-morbidly-obese-human-adipose-tissue-depots
#1
Karina Ribeiro Silva, Isis Côrtes, Sally Liechocki, João Regis Ivar Carneiro, Antônio Augusto Peixoto Souza, Radovan Borojevic, Clarissa Menezes Maya-Monteiro, Leandra Santos Baptista
BACKGROUND/OBJECTIVES: The pathological condition of obesity is accompanied by a dysfunctional adipose tissue. We postulate that subcutaneous, preperitoneal and visceral obese abdominal white adipose tissue depots could have stromal vascular fractions (SVF) with distinct composition and adipose stem cells (ASC) that would differentially account for the pathogenesis of obesity. METHODS: In order to evaluate the distribution of SVF subpopulations, samples of subcutaneous, preperitoneal and visceral adipose tissues from morbidly obese women (n = 12, BMI: 46...
2017: PloS One
https://www.readbyqxmd.com/read/28319046/t-cells-take-directions-from-supporting-cast-in-graft-versus-host-disease
#2
Derk Amsen
Allogeneic hematopoietic stem cell transplantation (HSCT) remains the only treatment option for several severe hematological malignancies. The development of graft-versus-host disease (GVHD) is a common complication of the procedure and results when donor T cells become activated against recipient-specific antigens. The factors that drive the alloreactive T cell response are not completely understood. In this issue of the JCI, Chung and colleagues present evidence that stromal cells within lymphoid tissue express the Notch ligands Delta-like 1/4 (DLL1 and DLL4), which in turn directly activate T cells...
March 20, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28316259/the-adipose-stromal-vascular-fraction-as-a-complex-cellular-source-for-tissue-engineering-applications
#3
Venkat M Ramakrishnan, Nolan L Boyd
A major challenge in tissue engineering is the generation of sufficient volumes of viable tissue for organ transplant. The development of a stable, mature vasculature is required to sustain the metabolic and functional activities of engineered tissues. Adipose stromal vascular fraction (SVF) cells are an easily accessible, heterogeneous cell system comprised of endothelial cells, macrophages, pericytes, and various stem cell populations. Collectively, SVF has been shown to spontaneously form vessel-like networks in vitro and robust, patent, and functional vasculatures in vivo...
March 19, 2017: Tissue Engineering. Part B, Reviews
https://www.readbyqxmd.com/read/28315704/interleukin-6-and-prostate-cancer-current-developments-and-unsolved-questions
#4
Zoran Culig, Martin Puhr
Interleukin (IL)-6 is a pro-inflammatory cytokine that is expressed in prostate tumors and in the stromal tumor micro-enviroment. It is known to regulate proliferation, apoptosis, angiogenesis, and differentiation. The signaling pathway of Janus kinase and signal transducer and activator of transcription (STAT)3, which is activated by IL-6, is in the focus of scientific investigations for improved treatment approaches. Different effects of IL-6 and/or STAT3 on tumor cell growth have been observed in human and murine prostate cancer (PCa) models...
March 15, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28315493/an-osteogenesis-angiogenesis-stimulation-artificial-ligament-for-anterior-cruciate-ligament-reconstruction
#5
Hong Li, Jinyan Li, Jia Jiang, Fang Lv, Jiang Chang, Shiyi Chen, Chengtie Wu
To solve the poor healing of polyethylene terephthalate (PET) artificial ligament in bone tunnel, copper-containing bioactive glass (Cu-BG) nanocoatings on PET artificial ligaments were successfully prepared by pulsed laser deposition (PLD). It was hypothesized that Cu-BG coated PET (Cu-BG/PET) grafts could enhance the in vitro osteogenic and angiogenic differentiation of rat bone marrow mesenchymal stem cells (rBMSCs) and in vivo graft-bone healing after anterior cruciate ligament (ACL) reconstruction in a goat model...
March 14, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28314478/osteoinductive-effects-of-glyceollins-on-adult-mesenchymal-stromal-stem-cells-from-adipose-tissue-and-bone-marrow
#6
Marjorie E Bateman, Amy L Strong, Ryan S Hunter, Melyssa R Bratton, Rajesh Komati, Jayalakshmi Sridhar, Kevin E Riley, Guangdi Wang, Daniel J Hayes, Stephen M Boue, Matthew E Burow, Bruce A Bunnell
BACKGROUND: While current therapies for osteoporosis focus on reducing bone resorption, the development of therapies to regenerate bone may also be beneficial. Promising anabolic therapy candidates include phytoestrogens, such as daidzein, which effectively induce osteogenesis of adipose-derived stromal cells (ASCs) and bone marrow stromal cells (BMSCs). PURPOSE: To investigate the effects of glyceollins, structural derivatives of daidzein, on osteogenesis of ASCs and BMSCs...
April 15, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/28306359/spinal-cord-injuries-how-could-cell-therapy-help
#7
Anna Badner, Ahad M Siddiqui, Michael G Fehlings
Spinal cord injury (SCI) is a devastating condition, where regenerative failure and cell loss lead to paralysis. The heterogeneous and time-sensitive pathophysiology has made it difficult to target tissue repair. Despite many medical advances, there are no effective regenerative therapies. As stem cells offer multi-targeted and environmentally responsive benefits, cell therapy is a promising treatment approach. Areas covered: This review highlights the cell therapies being investigated for SCI, including Schwann cells, olfactory ensheathing cells, mensenchymal stem/stromal cells, neural precursors, oligodendrocyte progenitors, embryonic stem cells, and induced pluripotent stem cells...
March 17, 2017: Expert Opinion on Biological Therapy
https://www.readbyqxmd.com/read/28303927/efficient-generation-of-chemically-induced-mesenchymal-stem-cells-from-human-dermal-fibroblasts
#8
Pei-Lun Lai, Hsuan Lin, Shang-Fu Chen, Shang-Chih Yang, Kuo-Hsuan Hung, Ching-Fang Chang, Hsiang-Yi Chang, Frank Leigh Lu, Yi-Hsuan Lee, Yu-Chuan Liu, Hsiao-Chun Huang, Jean Lu
Human mesenchymal stromal/stem cells (MSCs) are multipotent and currently undergoing hundreds of clinical trials for disease treatments. To date, no studies have generated induced MSCs from skin fibroblasts with chemicals or growth factors. Here, we established the first chemical method to convert primary human dermal fibroblasts into multipotent, induced MSC-like cells (iMSCs). The conversion method uses a defined cocktail of small molecules and growth factors, and it can achieve efficient conversion with an average rate of 38% in 6 days...
March 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28303319/effect-of-sdf-1-cxcr4-signaling-antagonist-amd3100-on-bone-mineralization-in-distraction-osteogenesis
#9
Jia Xu, Yuanfeng Chen, Yang Liu, Jinfang Zhang, Qinglin Kang, Kiwai Ho, Yimin Chai, Gang Li
Distraction osteogenesis (DO) is a widely applied technique in orthopedics surgery, which involves rapid stem cell migration, homing, and differentiation. Interactions between the chemokine receptor Cxcr4 and its ligand, stromal derived factor-1 (SDF-1), regulate hematopoietic stem cell trafficking to the ischemic area and induce their subsequent differentiation. Here, we examined SDF-1 expression and further investigated the role of SDF-1/Cxcr4 signaling antagonist AMD3100 during bone regeneration in rat DO model...
March 16, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/28303154/mesenchymal-stem-cell-administration-in-patients-with-chronic-obstructive-pulmonary-disease-state-of-the-science
#10
REVIEW
Shih-Lung Cheng, Ching-Hsiung Lin, Chao-Ling Yao
Patients with chronic obstructive pulmonary disease (COPD) have chronic, irreversible airway inflammation; currently, there is no effective or curative treatment and the main goals of COPD management are to mitigate symptoms and improve patients' quality of life. Stem cell based therapy offers a promising therapeutic approach that has shown potential in diverse degenerative lung diseases. Preclinical studies have demonstrated encouraging outcomes of mesenchymal stem/stromal cells (MSCs) therapy for lung disorders including emphysema, bronchopulmonary dysplasia, fibrosis, and acute respiratory distress syndrome...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28302184/cytokine-free-directed-differentiation-of-human-pluripotent-stem-cells-efficiently-produces-hemogenic-endothelium-with-lymphoid-potential
#11
Yekaterina Galat, Svetlana Dambaeva, Irina Elcheva, Aaruni Khanolkar, Kenneth Beaman, Philip M Iannaccone, Vasiliy Galat
BACKGROUND: The robust generation of human hematopoietic progenitor cells from induced or embryonic pluripotent stem cells would be beneficial for multiple areas of research, including mechanistic studies of hematopoiesis, the development of cellular therapies for autoimmune diseases, induced transplant tolerance, anticancer immunotherapies, disease modeling, and drug/toxicity screening. Over the past years, significant progress has been made in identifying effective protocols for hematopoietic differentiation from pluripotent stem cells and understanding stages of mesodermal, endothelial, and hematopoietic specification...
March 17, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28300168/zebrafish-caudal-haematopoietic-embryonic-stromal-tissue-chest-cells-support-haematopoiesis
#12
Anja Wolf, Julian Aggio, Clyde Campbell, Francis Wright, Gabriel Marquez, David Traver, David L Stachura
Haematopoiesis is an essential process in early vertebrate development that occurs in different distinct spatial locations in the embryo that shift over time. These different sites have distinct functions: in some anatomical locations specific hematopoietic stem and progenitor cells (HSPCs) are generated de novo. In others, HSPCs expand. HSPCs differentiate and renew in other locations, ensuring homeostatic maintenance. These niches primarily control haematopoiesis through a combination of cell-to-cell signalling and cytokine secretion that elicit unique biological effects in progenitors...
March 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28298639/benzyl-butyl-phthalate-decreases-myogenic-differentiation-of-endometrial-mesenchymal-stem-stromal-cells-through-mir-137-mediated-regulation-of-pitx2
#13
Hung-Sheng Chen, Chia-Yi Hsu, Yu-Chia Chang, Hui-Yu Chuang, Cheng-Yu Long, Tsung-Hua Hsieh, Eing-Mei Tsai
Phthalate, an environmental toxin, has been considered as an endocrine-disrupting chemical. Growing evidence has demonstrated links between endocrine-disrupting chemicals, tissue development, and reproductive physiology, but the mechanisms of gene expression regulation by environmental factors that affect cell differentiation are unclear. Herein, we investigated the effects of butyl benzyl phthalate (BBP) on human endometrial mesenchymal stem/stromal cell (EN-MSC) differentiation and identified a novel signaling pathway...
March 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28297581/systemic-delivery-of-bone-marrow-mesenchymal-stem-cells-for-in-situ-intervertebral-disc-regeneration
#14
Carla Cunha, Catarina R Almeida, Maria Inês Almeida, Andreia M Silva, Maria Molinos, Sofia Lamas, Catarina L Pereira, Graciosa Q Teixeira, António T Monteiro, Susana G Santos, Raquel M Gonçalves, Mário A Barbosa
Cell therapies for intervertebral disc (IVD) regeneration presently rely on transplantation of IVD cells or stem cells directly to the lesion site. Still, the harsh IVD environment, with low irrigation and high mechanical stress, challenges cell administration and survival. In this study, we addressed systemic transplantation of allogeneic bone marrow mesenchymal stem cells (MSCs) intravenously into a rat IVD lesion model, exploring tissue regeneration via cell signaling to the lesion site. MSC transplantation was performed 24 hours after injury, in parallel with dermal fibroblasts as a control; 2 weeks after transplantation, animals were killed...
March 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28297569/administration-of-adult-human-bone-marrow-derived-cultured-pooled-allogeneic-mesenchymal-stromal-cells-in-critical-limb-ischemia-due-to-buerger-s-disease-phase-ii-study-report-suggests-clinical-efficacy
#15
Pawan K Gupta, Murali Krishna, Anoop Chullikana, Sanjay Desai, Rajkumar Murugesan, Santanu Dutta, Uday Sarkar, Radhakrishnan Raju, Anita Dhar, Rajiv Parakh, Lakshmanan Jeyaseelan, Pachaiyappan Viswanathan, Prasanth Kulapurathu Vellotare, Raviraja N Seetharam, Charan Thej, Mathiyazhagan Rengasamy, Sudha Balasubramanian, Anish S Majumdar
Critical limb ischemia (CLI) due to Buerger's disease is a major unmet medical need with a high incidence of morbidity. This phase II, prospective, nonrandomized, open-label, multicentric, dose-ranging study was conducted to assess the efficacy and safety of i.m. injection of adult human bone marrow-derived, cultured, pooled, allogeneic mesenchymal stromal cells (BMMSC) in CLI due to Buerger's disease. Patients were allocated to three groups: 1 and 2 million cells/kg body weight (36 patients each) and standard of care (SOC) (18 patients)...
March 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28297568/safety-studies-for-use-of-adipose-tissue-derived-mesenchymal-stromal-stem-cells-in-a-rabbit-model-for-osteoarthritis-to-support-a-phase-i-clinical-trial
#16
Scott M Riester, Janet M Denbeigh, Yang Lin, Dakota L Jones, Tristan de Mooij, Eric A Lewallen, Hai Nie, Christopher R Paradise, Darcie J Radel, Amel Dudakovic, Emily T Camilleri, Dirk R Larson, Wenchun Qu, Aaron J Krych, Matthew A Frick, Hee-Jeong Im, Allan B Dietz, Jay Smith, Andre J van Wijnen
Adipose-derived mesenchymal stem cells (AMSCs) offer potential as a therapeutic option for clinical applications in musculoskeletal regenerative medicine because of their immunomodulatory functions and capacity for trilineage differentiation. In preparation for a phase I clinical trial using AMSCs to treat patients with osteoarthritis, we carried out preclinical studies to assess the safety of human AMSCs within the intra-articular joint space. Culture-expanded human AMSCs grown in human platelet-lysate were delivered via intra-articular injections into normal healthy rabbit knees and knees at risk for the development of osteoarthritis after bilateral medial anterior hemimeniscectomy...
March 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28297565/rationale-for-determining-the-functional-potency-of-mesenchymal-stem-cells-in-preventing-regulated-cell-death-for-therapeutic-use
#17
Abderrahim Naji, Narufumi Suganuma, Nicolas Espagnolle, Ken-Ichi Yagyu, Nobuyasu Baba, Luc Sensebé, Frédéric Deschaseaux
Mesenchymal stem (stromal) cells (MSCs) are being investigated for treating degenerative and inflammatory disorders because of their reparative and immunomodulatory properties. Intricate mechanisms relate cell death processes with immune responses, which have implications for degenerative and inflammatory conditions. We review the therapeutic value of MSCs in terms of preventing regulated cell death (RCD). When cells identify an insult, specific intracellular pathways are elicited for execution of RCD processes, such as apoptosis, necroptosis, and pyroptosis...
March 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28296186/changes-in-periprostatic-adipose-tissue-induced-by-5%C3%AE-reductase-inhibitors
#18
D Taussky, M Barkati, S Campeau, K Zerouali, A Nadiri, F Saad, G Delouya
There is increasing interest in periprostatic fat and its influence on prostate cancer aggressiveness. In vitro data suggest that adipose stromal/stem cells (ASCs) can increase production of cytokines and growth factors resulting in invasive growth and metastasis in prostate cancer. The objective of the study was to determine the interaction between 5α-reductase inhibitors (5ARIs) and periprostatic adipose tissue (PPAT) and factors of prostate cancer aggressiveness. In this retrospective study, we identified 61 patients treated with 5ARIs for a period of ≥12 months before undergoing radiation therapy (brachytherapy or external beam radiotherapy)...
March 10, 2017: Andrology
https://www.readbyqxmd.com/read/28292847/human-umbilical-cord-blood-borne-fibroblasts-contain-marrow-niche-precursors-that-form-a-bone-marrow-organoid-in-vivo
#19
Alice Pievani, Benedetto Sacchetti, Alessandro Corsi, Benedetta Rambaldi, Samantha Donsante, Valeria Scagliotti, Patrizia Vergani, Cristina Remoli, Andrea Biondi, Pamela G Robey, Mara Riminucci, Marta Serafini
Human umbilical cord blood (CB) has attracted much attention as a reservoir for functional hematopoietic stem and progenitor cells, and, recently, as a source of blood-borne fibroblasts (CB-BFs). Previously, we demonstrated that bone marrow stromal cell (BMSC) and CB-BF pellet cultures make cartilage in vitro Furthermore, upon in vivo transplantation, BMSC pellets remodelled into miniature bone/marrow organoids. Using this in vivo model, we asked whether CB-BF populations that express characteristics of the hematopoietic stem cell (HSC) niche contain precursors that reform the niche...
March 15, 2017: Development
https://www.readbyqxmd.com/read/28290502/extracellular-matrix-and-%C3%AE-5%C3%AE-1-integrin-signaling-control-the-maintenance-of-bone-formation-capacity-by-human-adipose-derived-stromal-cells
#20
Nunzia Di Maggio, Elisa Martella, Agne Frismantiene, Therese J Resink, Simone Schreiner, Enrico Lucarelli, Claude Jaquiery, Dirk J Schaefer, Ivan Martin, Arnaud Scherberich
Stromal vascular fraction (SVF) cells of human adipose tissue have the capacity to generate osteogenic grafts with intrinsic vasculogenic properties. However, adipose-derived stromal/stem cells (ASC), even after minimal monolayer expansion, display poor osteogenic capacity in vivo. We investigated whether ASC bone-forming capacity may be maintained by culture within a self-produced extracellular matrix (ECM) that recapitulates the native environment. SVF cells expanded without passaging up to 28 days (Unpass-ASC) deposited a fibronectin-rich extracellular matrix and displayed greater clonogenicity and differentiation potential in vitro compared to ASC expanded only for 6 days (P0-ASC) or for 28 days with regular passaging (Pass-ASC)...
March 14, 2017: Scientific Reports
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