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https://www.readbyqxmd.com/read/28070458/characterization-of-adipose-tissue-macrophages-and-adipose-derived-stem-cells-in-critical-wounds
#1
Bong-Sung Kim, Pathricia V Tilstam, Katrin Springenberg-Jung, Arne Hendrick Boecker, Corinna Schmitz, Daniel Heinrichs, Soo Seok Hwang, Jan Philipp Stromps, Bergita Ganse, Ruedger Kopp, Matthias Knobe, Juergen Bernhagen, Norbert Pallua, Richard Bucala
BACKGROUND: Subcutaneous adipose tissue is a rich source of adipose tissue macrophages and adipose-derived stem cells which both play a key role in wound repair. While macrophages can be divided into the classically-activated M1 and the alternatively-activated M2 phenotype, ASCs are characterized by the expression of specific stem cell markers. METHODS: In the present study, we have investigated the expression of common macrophage polarization and stem cell markers in acutely inflamed adipose tissue...
2017: PeerJ
https://www.readbyqxmd.com/read/28060732/prognostic-impact-of-cd73-and-a2a-adenosine-receptor-expression-in-non-small-cell-lung-cancer
#2
Yusuke Inoue, Katsuhiro Yoshimura, Nobuya Kurabe, Tomoaki Kahyo, Akikazu Kawase, Masayuki Tanahashi, Hiroshi Ogawa, Naoki Inui, Kazuhito Funai, Kazuya Shinmura, Hiroshi Niwa, Takafumi Suda, Haruhiko Sugimura
In immune cells, CD73 dephosphorylates and converts extracellular AMP into adenosine, which binds the A2A adenosine receptor (A2AR). Blockade of this interaction, which induces an immunosuppressed niche in the tumor microenvironment, represents a potential novel treatment strategy. The clinical significance of CD73 and A2AR expression in non-small-cell lung cancer (NSCLC), however, has yet to be thoroughly investigated. Here we evaluated CD73 and A2AR protein expression levels using immunohistochemistry in tissue microarrays containing 642 resected NSCLC specimens...
January 2, 2017: Oncotarget
https://www.readbyqxmd.com/read/28060378/cd73-regulates-anti-inflammatory-signaling-between-apoptotic-cells-and-endotoxin-conditioned-tissue-macrophages
#3
Patrick S Murphy, Jing Wang, Samir P Bhagwat, Joshua C Munger, William J Janssen, Terry W Wright, Michael R Elliott
The phagocytosis of apoptotic cells (efferocytosis) shifts macrophages to an anti-inflammatory state through a set of still poorly understood soluble and cell-bound signals. Apoptosis is a common feature of inflamed tissues, and efferocytosis by tissue macrophages is thought to promote the resolution of inflammation. However, it is not clear how the exposure of tissue macrophages to inflammatory cues (e.g., PAMPs, DAMPs) in the early stages of inflammation affects immune outcomes of macrophage-apoptotic cell interactions occurring at later stages of inflammation...
January 6, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28058621/mesenchymal-stroma-cells-in-peritoneal-dialysis-effluents-from-patients
#4
Bin Liu, Qiunong Guan, Jing Li, Gerald da Roza, Hao Wang, Caigan Du
Mesenchymal stroma cells (MSCs) have potential as an emerging cell therapy for treating many different diseases, but discovery of the practical sources of MSCs is needed for the large-scale clinical application of this therapy. This study was to identify MSCs in peritoneal dialysis (PD) effluents that were discarded after PD. The effluents were collected from patients who were on the dialysis for less than 1 month. Adherent cells from the effluents were isolated by incubation in serum-containing medium in plastic culture dishes...
January 5, 2017: Human Cell
https://www.readbyqxmd.com/read/28055237/enrichment-propagation-and-characterization-of-mouse-testis-derived-mesenchymal-stromal-cells
#5
Mai Ahmed, Myret Ghabriel, Asma Amleh
The therapeutic potential of multipotent stromal cells (MSCs) largely depends on the isolation and expansion methods used. In this study, we propose a laminin-based technique to select and enrich for MSCs isolated from the mouse testis. Primary cell cultures were prepared from juvenile mouse testes and the capacity to generate colony forming units together with population doubling time (PDT) during expansion were determined. The identity of MSCs was assayed using reverse transcription-polymerase chain reaction (RT-PCR) and flow cytometry for the active expression of cell surface markers, such as CD44, CD73, and CD29; absence of the CD45 hematopoietic cell marker; and in vitro differentiation of the cells into osteoblasts and adipocytes...
January 5, 2017: Cellular Reprogramming
https://www.readbyqxmd.com/read/28042333/nanosized-ucmsc-derived-extracellular-vesicles-but-not-conditioned-medium-exclusively-inhibit-the-inflammatory-response-of-stimulated-t-cells-implications-for-nanomedicine
#6
Marta Monguió-Tortajada, Santiago Roura, Carolina Gálvez-Montón, Josep Maria Pujal, Gemma Aran, Lucía Sanjurjo, Marcel la Franquesa, Maria-Rosa Sarrias, Antoni Bayes-Genis, Francesc E Borràs
Undesired immune responses have drastically hampered outcomes after allogeneic organ transplantation and cell therapy, and also lead to inflammatory diseases and autoimmunity. Umbilical cord mesenchymal stem cells (UCMSCs) have powerful regenerative and immunomodulatory potential, and their secreted extracellular vesicles (EVs) are envisaged as a promising natural source of nanoparticles to increase outcomes in organ transplantation and control inflammatory diseases. However, poor EV preparations containing highly-abundant soluble proteins may mask genuine vesicular-associated functions and provide misleading data...
2017: Theranostics
https://www.readbyqxmd.com/read/28040084/do-skeletal-muscle-mscs-in-humans-contribute-to-bone-repair-a-systematic-review
#7
Heather Owston, Peter V Giannoudis, Elena Jones
Mesenchymal stem cells (MSC) from bone marrow and periosteum are known to be heavily involved in fracture repair and bone regeneration is thought to be impaired when the surrounding skeletal muscle is damaged. Recent literature from mouse in vivo models suggest that cells originating from skeletal muscle can occupy a fracture callus during open fracture repair when periosteum is compromised. This systematic review set out to ascertain whether there are MSCs residing in human skeletal muscle and whether cells from human skeletal muscle are capable of forming bone in vitro and in vivo...
December 2016: Injury
https://www.readbyqxmd.com/read/28038380/the-p2y2-nucleotide-receptor-is-an-inhibitor-of-vascular-calcification
#8
Shaomin Qian, Jenna N Regan, Maxwell T Shelton, April Hoggatt, Khalid S Mohammad, Paul B Herring, Cheikh I Seye
BACKGROUND AND AIMS: Mutations in the 5'-nucleotidase ecto (NT5E) gene that encodes CD73, a nucleotidase that converts AMP to adenosine, are linked to arterial calcification. However, the role of purinergic receptor signaling in the pathology of intimal calcification is not well understood. In this study, we examined whether extracellular nucleotides acting via P2Y2 receptor (P2Y2R) modulate arterial intimal calcification, a condition highly correlated with cardiovascular morbidity. METHODS: Apolipoprotein E, P2Y2R double knockout mice (ApoE(-/-)P2Y2R(-/-)) were used to determine the effect of P2Y2R deficiency on vascular calcification in vivo...
December 15, 2016: Atherosclerosis
https://www.readbyqxmd.com/read/28038353/decellularized-adipose-tissue-microcarriers-as-a-dynamic-culture-platform-for-human-adipose-derived-stem-stromal-cell-expansion
#9
Claire Yu, Anna Kornmuller, Cody Brown, Todd Hoare, Lauren E Flynn
With the goal of designing a clinically-relevant expansion strategy for human adipose-derived stem/stromal cells (ASCs), methods were developed to synthesize porous microcarriers derived purely from human decellularized adipose tissue (DAT). An electrospraying approach was applied to generate spherical DAT microcarriers with an average diameter of 428 ± 41 μm, which were soft, compliant, and stable in long-term culture without chemical crosslinking. Human ASCs demonstrated enhanced proliferation on the DAT microcarriers relative to commercially-sourced Cultispher-S microcarriers within a spinner culture system over 1 month...
December 23, 2016: Biomaterials
https://www.readbyqxmd.com/read/28034554/biological-characters-of-human-dermal-fibroblasts-derived-from-foreskin-of-male-infertile-patients
#10
Fang Fang, Ke Ni, Yiting Cai, Zhen Ye, Jin Shang, Shiliang Shen, Chengliang Xiong
Dermal fibroblasts play a vital role in maintaining skin function. They not only synthesize and secrete extracellular matrix molecules, but also produce a complex mixture of bioactive factors, which both contribute to immune regulation and wound healing. Fibroblasts isolated from skin tissue exhibit wide range of potentials, especially in regenerative medicine. The use of fibroblast cultures for medical purposes requires standardization of cell preparations. To achieve this, we isolated and characterized dermal fibroblasts from human foreskin with a standardized method...
December 8, 2016: Tissue & Cell
https://www.readbyqxmd.com/read/28032398/cultivation-and-characterisation-of-the-surface-markers-and-carbohydrate-profile-of-human-corneal-endothelial-cells
#11
Richárd Nagymihály, Zoltán Veréb, Réka Albert, Laura Sidney, Harminder Dua, Andrew Hopkinson, Goran Petrovski
BACKGROUND: To characterise human corneal endothelial cell (HCEnC) cultures generated by the peel-and-digest method based on their surface protein/carbohydrate expression pattern. METHODS: QPCR was used to compare expression of Vimentin, CD90, Cytokeratin-19, ZO-1, Claudin 14 in cultured HCEnC and cell line B4G12 versus stromal cells. Fluorescence-activated cell sorting (FACS) was used to assess surface protein distribution of cultured and uncultured HCEnC. Distribution of surface proteins/ carbohydrates was visualised by immunofluorescent and lectin staining...
December 29, 2016: Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/28017358/differentiation-of-mesenchymal-stem-cells-from-human-amniotic-fluid-to-vascular-endothelial-cells
#12
Waleephan Tancharoen, Sirinda Aungsuchawan, Peraphan Pothacharoen, Runchana Markmee, Suteera Narakornsak, Junjira Kieodee, Nonglak Boonma, Witoon Tasuya
Endothelial dysfunction is a principle feature of vascular-related disease. Endothelial cells have been acquired for the purposes of the restoration of damaged tissue in therapeutic angiogenesis. However, their use is limited by expansion capacity and the small amount of cells that are obtained. Human amniotic fluid mesenchymal stem cells (hAF-MSCs) are considered an important source for vascular tissue engineering. In this study, hAF-MSCs were characterized and then induced in order to differentiate into the endothelial-like cells...
December 22, 2016: Acta Histochemica
https://www.readbyqxmd.com/read/28005443/identification-and-characterization-of-adult-mouse-meniscus-stem-progenitor-cells
#13
Laura W Gamer, Rui Rui Shi, Ashira Gendelman, Dylan Mathewson, Jackson Gamer, Vicki Rosen
Meniscal damage is a common problem that accelerates the onset of knee osteoarthritis. Stem cell based tissue engineering treatment approaches have shown promise in preserving meniscal tissue and restoring meniscal function. The purpose of our study was to identify meniscus-derived stem/progenitor cells (MSPCs) from mouse, a model system that allows for in vivo analysis of the mechanisms underlying meniscal injury and healing. MSPCs were isolated from murine menisci grown in explant culture and characterized for stem cell properties...
December 22, 2016: Connective Tissue Research
https://www.readbyqxmd.com/read/28003831/in-vitro-osteogenic-potential-of-green-fluorescent-protein-labelled-human-embryonic-stem-cell-derived-osteoprogenitors
#14
Intekhab Islam, Gopu Sriram, Mingming Li, Yu Zou, Lulu Li, Harish K Handral, Vinicus Rosa, Tong Cao
Cellular therapy using stem cells in bone regeneration has gained increasing interest. Various studies suggest the clinical utility of osteoprogenitors-like mesenchymal stem cells in bone regeneration. However, limited availability of mesenchymal stem cells and conflicting evidence on their therapeutic efficacy limit their clinical application. Human embryonic stem cells (hESCs) are potentially an unlimited source of healthy and functional osteoprogenitors (OPs) that could be utilized for bone regenerative applications...
2016: Stem Cells International
https://www.readbyqxmd.com/read/28000839/il-1%C3%AE-impedes-the-chondrogenic-differentiation-of-synovial-fluid-mesenchymal-stem-cells-in-the-human-temporomandibular-joint
#15
Wenjing Liu, Yangpeng Sun, Yiqing He, Hong Zhang, Youhua Zheng, Yu Yao, Zhiguang Zhang
Mesenchymal stem cell-based therapy has great therapeutic potential for temporomandibular joint (TMJ) cartilage repair. However, the behavior of mesenchymal stem cells in the inflammatory milieu following their delivery remains poorly understood. Synovial fluid-derived mesenchymal stem cells (SFMSCs) are a promising resource for TMJ cartilage repair, as they are easily obtained from patients with TMJ disorders (TMD). In this study, we obtained SFMSCs from patients with TMD and expanded them in vitro; we then stimulated the cells with interleukin (IL)‑8, IL-1β, IL-6, IL-10, tumor necrosis factor (TNF)-α and IL-12p...
December 15, 2016: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/27995034/adipose-derived-human-stem-stromal-cells-comparative-organ-specific-mitochondrial-bioenergy-profiles
#16
Alice S Ferng, Katherine M Marsh, Jamie M Fleming, Renee F Conway, David Schipper, Naing Bajaj, Alana M Connell, Tia Pilikian, Kitsie Johnson, Ray Runyan, Stephen M Black, John A Szivek, Zain Khalpey
BACKGROUND: Adipose-derived stem/stromal cells (ASCs) isolated from the stromal vascular fraction are a source of mesenchymal stem cells that have been shown to be beneficial in many regenerative medicine applications. ASCs are an attractive source of stem cells in particular, due to their lack of immunogenicity. This study examines differences between mitochondrial bioenergetic profiles of ASCs isolated from adipose tissue of five peri-organ regions: pericardial, thymic, knee, shoulder, and abdomen...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27994067/percentage-of-mesenchymal-stem-cells-in-high-grade-glioma-tumor-samples-correlates-with-patient-survival
#17
Tal Shahar, Uri Rozovski, Kenneth R Hess, Anwar Hossain, Joy Gumin, Feng Gao, Gregory N Fuller, Lindsey Goodman, Erik P Sulman, Frederick F Lang
BACKGROUND: Human mesenchymal stem cells (hMSCs) have been shown to reside as stromal cells in human gliomas as glioma-associated hMSCs (GA-hMSCs), but their biological role remains unclear. Because recent evidence indicates that GA-hMSCs drive tumor cell proliferation and stemness, we hypothesized that a higher percentage of GA-hMSCs in tumors predicts poor patient prognosis. METHOD: We determined the percentage of cells coexpressing GA-hMSC markers CD105+/CD73+/CD90+ from patients with newly diagnosed high-grade glioma and analyzed the association between this percentage and overall survival (OS) in 3 independent cohorts: fresh surgical glioblastoma specimens (cohort 1, N = 9), cultured tumor specimens at passage 3 (cohort 2, N = 28), and The Cancer Genome Atlas (TCGA) database...
December 18, 2016: Neuro-oncology
https://www.readbyqxmd.com/read/27993599/cd73-specific-sirna-loaded-chitosan-lactate-nanoparticles-potentiate-the-antitumor-effect-of-a-dendritic-cell-vaccine-in-4t1-breast-cancer-bearing-mice
#18
Farhad Jadidi-Niaragh, Fatemeh Atyabi, Ali Rastegari, Nasim Kheshtchin, Samaneh Arab, Hadi Hassannia, Maryam Ajami, Zahra Mirsanei, Sima Habibi, Farimah Masoumi, Farshid Noorbakhsh, Fazel Shokri, Jamshid Hadjati
The efficacy of conventional anti-tumor immunotherapeutic approaches is markedly affected by the immunosuppressive microenvironment of tumor. Since adenosine is one of the main orchestra leaders in immunosuppression symphony of tumor, targeting its producing molecules such as CD73 can help to achieve a better clinical outcome following conventional cancer immunotherapeutic approaches. In the present study, we evaluated the efficacy of CD73-specific siRNA-loaded chitosan-lactate nanoparticles (ChLa NPs) in combination with tumor lysate pulsed dendritic cells (DCs) vaccine in treatment of 4T1 (murine derived) breast cancer bearing mice...
December 18, 2016: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/27989346/assessment-of-multipotent-mesenchymal-stromal-cells-in-bone-marrow-aspirate-from-human-calcaneus
#19
Chunmei Li, Cory D Kilpatrick, Shannon S Kenwood, Dean L Glettig, Douglas J Glod, Jason Mallette, Michael R Strunk, Jerry Chang, Siddhesh R Angle, David L Kaplan
Bone marrow aspirates (BMAs), owing to their innate osteogenic potential, are well-documented supplements to osteoconductive and/or osteoinductive materials. The calcaneal body provides foot and ankle surgeons a convenient harvest site with low morbidity and minimal cost. In the present study, we sought to identify and characterize multipotent mesenchymal stromal cells (MSCs) in BMAs harvested from the human calcaneal body. Ten healthy patients aged 18 to 65 years were enrolled in the present study. BMAs were harvested from the patients without any reported postoperative complications related to the harvest...
January 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/27988461/divergent-regulatory-roles-of-extracellular-atp-in-the-degranulation-response-of-mouse-bone-marrow-derived-mast-cells
#20
Kazuki Yoshida, Masaaki Ito, Isao Matsuoka
Mast cells (MCs) play a critical role in allergic inflammation. Although purinergic signalling is implicated in the regulation of various immune responses, its role in MC function is not fully understood. In this study, we investigated the regulatory role of purinergic signalling in MC degranulation, using mouse bone marrow-derived mast cells (BMMCs). Notably, BMMCs expressed various functional P2 adenosine triphosphate (ATP) receptors, including ionotropic P2X4 and P2X7, involved in the regulation of BMMC degranulation...
February 2017: International Immunopharmacology
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