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https://www.readbyqxmd.com/read/28532113/nanofibers-of-human-tropoelastin-inspired-peptides-structural-characterization-and-biological-properties
#1
Valeria Secchi, Stefano Franchi, Marco Fioramonti, Giovanni Polzonetti, Giovanna Iucci, Brigida Bochicchio, Chiara Battocchio
Regenerative medicine is taking great advantage from the use of biomaterials in the treatments of a wide range of diseases and injuries. Among other biomaterials, self-assembling peptides are appealing systems due to their ability to spontaneously form nanostructured hydrogels that can be directly injected into lesions. Indeed, self-assembling peptide scaffolds are expected to behave as biomimetic matrices able to surround cells, to promote specific interactions, and to control and modify cell behavior by mimicking the native environment as well...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28530131/a-novel-combination-of-a-polycaprolactone-fumarate-pclf-scaffold-with-polyethylene-terephthalate-pet-sutures-for-intra-articular-ligament-regeneration
#2
Joshua Parry, Eric R Wagner, Peter Kok, Mahrokh Dadsetan, Michael J Yaszemski, Andre J van Wijnen, Sanjeev Kakar
Intra-articular ligamentous injuries are typically unrepairable and have limited outcomes after graft reconstruction. A combination of porous polycaprolactone fumarate (PCLF) scaffolds with polyethylene terephthalate (PET) sutures was developed with the goal of regenerating intra-articular ligaments. Scaffolds were fabricated by injecting PCLF over 3D-printed molds containing two strands of PET suture down its central pore followed by crosslinking. Scaffolds were seeded with human mesenchymal stem cells (MSCs) from adipose tissue...
May 20, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28529938/senescence-inflammatory-regulation-of-reparative-cellular-reprogramming-in-aging-and-cancer
#3
Javier A Menendez, Tomás Alarcón
The inability of adult tissues to transitorily generate cells with functional stem cell-like properties is a major obstacle to tissue self-repair. Nuclear reprogramming-like phenomena that induce a transient acquisition of epigenetic plasticity and phenotype malleability may constitute a reparative route through which human tissues respond to injury, stress, and disease. However, tissue rejuvenation should involve not only the transient epigenetic reprogramming of differentiated cells, but also the committed re-acquisition of the original or alternative committed cell fate...
2017: Frontiers in Cell and Developmental Biology
https://www.readbyqxmd.com/read/28529644/3-3-diindolylmethane-stimulates-exosomal-wnt11-autocrine-signaling-in-human-umbilical-cord-mesenchymal-stem-cells-to-enhance-wound-healing
#4
Hui Shi, Xiao Xu, Bin Zhang, Jiahao Xu, Zhaoji Pan, Aihua Gong, Xu Zhang, Rong Li, Yaoxiang Sun, Yongmin Yan, Fei Mao, Hui Qian, Wenrong Xu
Human umbilical cord-derived mesenchymal stem cells (hucMSCs) are suggested as a promising therapeutic tool in regenerative medicine, however, their efficacy requires improvement. Small molecules and drugs come up to be a convenient strategy in regulating stem cells fate and function. Here, we evaluated 3,3'-diindolylmethane (DIM), a natural small-molecule compound involved in the repairing effects of hucMSCs on a deep second-degree burn injury rat model. HucMSCs primed with 50 μM of DIM exhibited desirable repairing effects compared with untreated hucMSCs...
2017: Theranostics
https://www.readbyqxmd.com/read/28529639/overexpression-of-insulin-like-growth-factor-1-enhanced-the-osteogenic-capability-of-aging-bone-marrow-mesenchymal-stem-cells
#5
Ching-Yun Chen, Kuo-Yun Tseng, Yen-Liang Lai, Yo-Shen Chen, Feng-Huei Lin, Shankung Lin
Many studies have indicated that loss of the osteoblastogenic potential in bone marrow mesenchymal stem cells (bmMSCs) is the major component in the etiology of the aging-related bone deficit. But how the bmMSCs lose osteogenic capability in aging is unclear. Using 2-dimentional cultures, we examined the dose response of human bmMSCs, isolated from adult and aged donors, to exogenous insulin-like growth factor 1 (IGF-1), a growth factor regulating bone formation. The data showed that the mitogenic activity and the osteoblastogenic potential of bmMSCs in response to IGF-1 were impaired with aging, whereas higher doses of IGF-1 increased the proliferation rate and osteogenic potential of aging bmMSCs...
2017: Theranostics
https://www.readbyqxmd.com/read/28529106/engineered-cartilage-regeneration-from-adipose-tissue-derived-mesenchymal-stem-cells-a-morphomolecular-study-on-osteoblast-chondrocyte-and-apoptosis-evaluation
#6
Marta Anna Szychlinska, Paola Castrogiovanni, Houda Nsir, Michelino Di Rosa, Claudia Guglielmino, Rosalba Parenti, Giovanna Calabrese, Elisabetta Pricoco, Lucia Salvatorelli, Gaetano Magro, Rosa Imbesi, Ali Mobasheri, Giuseppe Musumeci
The poor self-repair capacity of cartilage tissue in degenerative conditions, such as osteoarthritis (OA), has prompted the development of a variety of therapeutic approaches, such as cellular therapies and tissue engineering based on the use of mesenchymal stem cells (MSCs). The aim of this study is to demonstrate, for the first time, that the chondrocytes differentiated from rat adipose tissue derived-MSCs (AMSCs), are able to constitute a morphologically and biochemically healthy hyaline cartilage after 6 weeks of culture on a Collagen Cell Carrier (CCC) scaffold...
May 18, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28527850/complement-activation-by-pulp-capping-materials-plays-a-significant-role-in-both-inflammatory-and-pulp-stem-cells-recruitment
#7
Thomas Giraud, Pierre Rufas, Fanny Chmilewsky, Charlotte Rombouts, Jacques Dejou, Charlotte Jeanneau, Imad About
INTRODUCTION: The role of complement, especially through the C5a fragment, is well-known for the initiation of inflammation. Its involvement in regeneration has been shown more recently by the recruitment of mesenchymal stem cells. C5a can be produced locally by the pulp fibroblasts in response to injury or infection. This work aims to investigate the effect of different pulp capping biomaterials on complement activation and its possible influence on inflammatory and pulp stem cell recruitment...
May 17, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28527111/human-placenta-derived-mesenchymal-stem-cells-loaded-on-linear-ordered-collagen-scaffold-improves-functional-recovery-after-completely-transected-spinal-cord-injury-in-canine
#8
Sufang Han, Zhifeng Xiao, Xing Li, Huan Zhao, Bin Wang, Zhixue Qiu, Zhi Li, Xin Mei, Bai Xu, Caixia Fan, Bing Chen, Jin Han, Yanzheng Gu, Huilin Yang, Qin Shi, Jianwu Dai
Traumatic spinal cord injury (SCI) is a major challenge in the clinic. In this study, we sought to examine the synergistic effects of linear ordered collagen scaffold (LOCS) and human placenta-derived mesenchymal stem cells (hPMSCs) when transplanted into completely transected beagle dogs. After 36 weeks observation, we found that LOCS+hPMSCs implants promoted better hindlimb locomotor recovery than was observed in the non-treatment (control) group and LOCS group. Histological analysis showed that the regenerated tissue after treatment was well integrated with the host tissue, and dramatically reduced the volume of cystic and chondroitin sulfate proteoglycans (CSPGs) expression...
May 16, 2017: Science China. Life Sciences
https://www.readbyqxmd.com/read/28526928/exosomes-in-cardiovascular-medicine
#9
REVIEW
Iain M Dykes
Exosomes are small, extracellular membrane-bound particles that mediate intercellular transport of a cytosolic cargo. Exosomal transfer of micro-RNA can modify gene expression in targeted cells. Exosome-based endocrine/paracrine signaling has been shown to be involved in a wide range of physiological processes including those associated with cardiovascular injury and disease, but remains relatively poorly understood. Exosomes offer great potential to the clinical field, with applications in both diagnostics and therapeutics...
May 19, 2017: Cardiology and Therapy
https://www.readbyqxmd.com/read/28525896/activation-of-cannabinoid-receptor-type-ii-by-am1241-protects-adipose-derived-mesenchymal-stem-cells-from-oxidative-damage-and-enhances-their-therapeutic-efficacy-in-myocardial-infarction-mice-via-stat3-activation
#10
Dong Han, Xiang Li, Wen-Si Fan, Jiang-Wei Chen, Tian-Tian Gou, Tao Su, Miao-Miao Fan, Meng-Qi Xu, Ya-Bin Wang, Sai Ma, Ya Qiu, Feng Cao
The poor survival of cells in ischemic sites diminishes the therapeutic efficacy of stem cell therapy. Previously we and others have reported that Cannabinoid receptor type II (CB2) is protective during heart ischemic injury for its anti-oxidative activity. However, whether CB2 activation could improve the survival and therapeutic efficacy of stem cells in ischemic myocardium and the underlying mechanisms remain elusive. Here, we showed evidence that CB2 agonist AM1241 treatment could improve the functional survival of adipose-derived mesenchymal stem cells (AD-MSCs) in vitro as well as in vivo...
May 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28524859/mesenchymal-stem-cells-sense-mitochondria-released-from-damaged-cells-as-danger-signals-to-activate-their-rescue-properties
#11
Meriem Mahrouf-Yorgov, Lionel Augeul, Claire Crola Da Silva, Maud Jourdan, Muriel Rigolet, Sylvie Manin, René Ferrera, Michel Ovize, Adeline Henry, Aurélie Guguin, Jean-Paul Meningaud, Jean-Luc Dubois-Randé, Roberto Motterlini, Roberta Foresti, Anne-Marie Rodriguez
Mesenchymal stem cells (MSCs) protect tissues against cell death induced by ischemia/reperfusion insults. This therapeutic effect seems to be controlled by physiological cues released by the local microenvironment following injury. Recent lines of evidence indicate that MSC can communicate with their microenvironment through bidirectional exchanges of mitochondria. In particular, in vitro and in vivo studies report that MSCs rescue injured cells through delivery of their own mitochondria. However, the role of mitochondria conveyed from somatic cells to MSC remains unknown...
May 19, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28524834/wild-type-p53-induced-phosphatase-1-deficiency-exacerbates-myocardial-infarction-induced-ischemic-injury
#12
Ke-Mei Liu, Hai-Hong Zhang, Ya-Nan Wang, Lian-Mei Wang, Hong-Yu Chen, Cai-Feng Long, Lian-Feng Zhang, Hong-Bing Zhang, Hong-Bing Yan
BACKGROUND: Myocardial infarction (MI) is a major disease burden. Wild-type p53-induced phosphatase 1 (Wip1) has been studied extensively in the context of cancer and the regulation of different types of stem cells, but the role of Wip1 in cardiac adaptation to MI is unknown. We investigated the significance of Wip1 in a mouse model of MI. METHODS: The study began in June 2014 and was completed in July 2016. We compared Wip1-knockout (Wip1-KO) mice and wild-type (WT) mice to determine changes in cardiac function and survival in response to MI...
June 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28524176/lentivirus-mediated-microrna-124-gene-modified-bone-marrow-mesenchymal-stem-cell-transplantation-promotes-the-repair-of-spinal-cord-injury-in-rats
#13
Jia-Lin Song, Wei Zheng, Wei Chen, Yun Qian, Yuan-Ming Ouyang, Cun-Yi Fan
Our study aims to explore the effects of lentivirus-mediated microRNA-124 (miR-124) gene-modified bone marrow mesenchymal stem cell (BMSC) transplantation on the repair of spinal cord injury (SCI) in rats. BMSCs were isolated from the bone marrow of rats. The target gene miR-124 was identified using a luciferase-reporter gene assay. Seventy-two rats were selected for construction of the SCI model, and the rats were randomly divided into the blank group, sham group, SCI group, negative control (NC) group, overexpressed miR-124 group and si-PDXK group...
May 19, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28523456/bone-marrow-mesenchymal-stem-cell-administration-significantly-improves-outcome-after-retinal-ischemia-in-rats
#14
Biji Mathew, Jacqueline N Poston, John C Dreixler, Leianne Torres, Jasmine Lopez, Ruth Zelkha, Irina Balyasnikova, Maciej S Lesniak, Steven Roth
PURPOSE: Ischemia-associated retinal degeneration is one of the leading causes of vision loss, and to date, there are no effective treatment options. We hypothesized that delayed injection of bone-marrow stem cells (BMSCs) 24 h after the onset of ischemia could effectively rescue ischemic retina from its consequences, including apoptosis, inflammation, and increased vascular permeability, thereby preventing retinal cell loss. METHODS: Retinal ischemia was induced in adult Wistar rats by increasing intraocular pressure (IOP) to 130-135 mmHg for 55 min...
May 18, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28523266/stimulating-fracture-healing-in-ischemic-environments-does-oxygen-direct-stem-cell-fate-during-fracture-healing
#15
REVIEW
Katherine R Miclau, Sloane A Brazina, Chelsea S Bahney, Kurt D Hankenson, Thomas K Hunt, Ralph S Marcucio, Theodore Miclau
Bone fractures represent an enormous societal and economic burden as one of the most prevalent causes of disability worldwide. Each year, nearly 15 million people are affected by fractures in the United States alone. Data indicate that the blood supply is critical for fracture healing; as data indicate that concomitant bone and vascular injury are major risk factors for non-union. However, the various role(s) that the vasculature plays remains speculative. Fracture stabilization dictates stem cell fate choices during repair...
2017: Frontiers in Cell and Developmental Biology
https://www.readbyqxmd.com/read/28520221/rap1b-is-an-effector-of-axin2-regulating-crosstalk-of-signaling-pathways-during-skeletal-development
#16
Takamitsu Maruyama, Ming Jiang, Alycia Abbott, H-M Ivy Yu, Qirong Huang, Magdalena Chrzanowska-Wodnicka, Emily I Chen, Wei Hsu
Recent identification and isolation of suture stem cells capable of long term self-renewal, clonal expanding and differentiating demonstrate their essential role in calvarial bone development, homeostasis and injury repair. These bona fide stem cells express high level of Axin2 and are able to mediate bone regeneration and repair in a cell autonomous fashion. The importance of Axin2 is further demonstrated by its genetic inactivation in mice causing skeletal deformities resembling craniosynostosis in humans...
May 18, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28516946/ccl2-ccr2-signalling-recruits-a-distinct-fetal-microchimeric-population-that-rescues-delayed-maternal-wound-healing
#17
Mathieu Castela, Dany Nassar, Maria Sbeih, Marie Jachiet, Zhe Wang, Selim Aractingi
Foetal microchimeric cells (FMCs) traffic into maternal circulation during pregnancy and persist for decades after delivery. Upon maternal injury, FMCs migrate to affected sites where they participate in tissue healing. However, the specific signals regulating the trafficking of FMCs to injury sites had to be identified. Here we report that, in mice, a subset of FMCs implicated in tissue repair displays CD11b(+) CD34(+) CD31(+) phenotype and highly express C-C chemokine receptor 2 (Ccr2). The Ccr2 ligand chemokine ligand 2 (Ccl2) enhances the recruitment of FMCs to maternal wounds where these cells transdifferentiate into endothelial cells and stimulate angiogenesis through Cxcl1 secretion...
May 18, 2017: Nature Communications
https://www.readbyqxmd.com/read/28514329/-brain-plasticity-limitations-and-possibilities
#18
E P Kharchenko, M N Telnova
Biological limitations related to the brain regeneration and stem cells transplantation as well as the factors influencing the brain plasticity following the brain injury, including epigenetic regulatory mechanisms, are presented. Non-invasive transcranial microelectrostimulation is considered as a perspective method of polysystemic influence on endogenic mechanisms of brain recovery.
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28512471/resveratrol-induces-differentiation-of-human-umbilical-cord-mesenchymal-stem-cells-into-neuron-like-cells
#19
Li Guo, Liang Wang, Li Wang, Shi Yun-Peng, Jing-Jing Zhou, Zongmao Zhao, De-Pei Li
Objective. Human umbilical cord mesenchymal stem cells (hUC-MSCs) potentially differentiate to various types of cells including neuron-like cells. The natural polyphenol resveratrol benefits patients with many diseases including ischemic brain injury. We hypothesize that resveratrol induces differentiation of hUC-MSCs into neuron-like cells. Methods. Flow cytometry was used to determine the surface antigens in different stage of hUC-MSCs (P2, P5, and P10). Nestin, neuron-specific enolase (NSE), and glial fibrillary acidic protein (GFAP) were detected by immunocytochemistry, Western blotting, and real time RT-PCT...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28509821/minimum-information-for-studies-evaluating-biologics-in-orthopaedics-mibo-platelet-rich-plasma-and-mesenchymal-stem-cells
#20
Iain R Murray, Andrew G Geeslin, Ewan B Goudie, Frank A Petrigliano, Robert F LaPrade
BACKGROUND: A comprehensive approach to the evaluation of biologic therapies for musculoskeletal conditions is required to guide appropriate future use. Clinical studies evaluating platelet-rich plasma (PRP) and mesenchymal stem cells (MSCs) are limited by inadequate reporting of scientific details critical to outcome. We developed minimum reporting requirements for clinical studies evaluating PRP and MSCs using Delphi consensus methods. METHODS: The need for consensus on the minimum reporting requirements for studies evaluating biologics was identified at the American Academy of Orthopaedic Surgeons/Orthopaedic Research Society (AAOS/ORS) Biologic Treatments for Orthopaedic Injuries Symposium in 2015 and the American Orthopaedic Society for Sports Medicine (AOSSM) Biologic Treatments for Sports Injuries II Think Tank in 2015...
May 17, 2017: Journal of Bone and Joint Surgery. American Volume
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