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https://www.readbyqxmd.com/read/28734802/co-transplantation-of-mesenchymal-and-neural-stem-cells-and-overexpressing-stromal-derived-factor-1-for-treating-spinal-cord-injury
#1
Andrew N Stewart, Griffin Kendziorski, Zachary M Deak, Dara J Brown, Matthew N Fini, Katherine L Copely, Julien Rossignol, Gary L Dunbar
Genetic engineering of mesenchymal stem cells (MSCs) and neuronal stem cells (NSCs) has been used to treat spinal cord injuries (SCI). As a mechanism of therapy, MSCs secrete high amounts of anti-inflammatory cytokines and trophic factors, while NSCs can differentiate into neuronal lineages and aid in tissue replacement. Additionally, the forced overexpression of secreted proteins can enhance the secretome of transplanted cells, which can increase therapeutic efficacy. This study utilized a combinational treatment consisting of MSCs, NSCs, and the forced overexpression of the chemokine stromal-derived factor-1 (SDF-1) from MSCs (SDF-1-MSCs), to treat a rat model of SCI...
July 19, 2017: Brain Research
https://www.readbyqxmd.com/read/28715799/resident-arterial-cells-and-circulating-bone-marrow-derived-cells-both-contribute-to-intimal-hyperplasia-in-a-rat-allograft-carotid-transplantation-model
#2
Yi He, Xin Xu, Ting Zhu, Min Tang, Ju Mei, Yi Si
BACKGROUND/AIMS: Neointimal formation following vascular injury remains a major mechanism of restenosis, whereas the precise sources of neointimal cells are still uncertain. We tested the hypothesis that both injured arterial cells and non-arterial cells contribute to intimal hyperplasia. METHODS: Following allograft transplantation of the balloon-injured carotid common artery (n = 3-6), the cellular composition of the transplant grafts and the origins of neointimal cells were measured by immunohistochemistry and immunofluorescence staining...
July 11, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28711757/cxcr4-and-cxcr7-play-distinct-roles-in-cardiac-lineage-specification-and-pharmacologic-%C3%AE-adrenergic-response
#3
Delaine K Ceholski, Irene C Turnbull, Venu Pothula, Laura Lecce, Andrew A Jarrah, Changwon Kho, Ahyoung Lee, Lahouaria Hadri, Kevin D Costa, Roger J Hajjar, Sima T Tarzami
CXCR4 and CXCR7 are prominent G protein-coupled receptors (GPCRs) for chemokine stromal cell-derived factor-1 (SDF-1/CXCL12). This study demonstrates that CXCR4 and CXCR7 induce differential effects during cardiac lineage differentiation and β-adrenergic response in human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs). Using lentiviral vectors to ablate CXCR4 and/or CXCR7 expression, hiPSC-CMs were tested for phenotypic and functional properties due to gene knockdown. Gene expression and flow cytometry confirmed the pluripotent and cardiomyocyte phenotype of undifferentiated and differentiated hiPSCs, respectively...
July 8, 2017: Stem Cell Research
https://www.readbyqxmd.com/read/28701189/stromal-derived-factor-1-mediates-the-lung-regenerative-effects-of-mesenchymal-stem-cells-in-a-rodent-model-of-bronchopulmonary-dysplasia
#4
Joel Reiter, Shelley Drummond, Ibrahim Sammour, Jian Huang, Victoria Florea, Polliana Dornas, Joshua M Hare, Claudia O Rodrigues, Karen C Young
BACKGROUND: Mesenchymal stem cells (MSCs) attenuate lung injury in experimental models of bronchopulmonary dysplasia (BPD). Stromal derived factor-1 (SDF-1), a chemokine secreted by MSCs, modulates angiogenesis and stem cell recruitment. Here we tested the hypothesis that SDF-1 mediates MSC protective effects in experimental BPD by modulating angiogenesis. METHODS: SDF-1 was knocked down in MSCs using lentiviral vectors carrying anti-SDF-1 short hairpin RNA (MSC-SDF KD)...
July 12, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28683322/stromal-cell-derived-factor-1-mediates-immune-cell-attraction-upon-urinary-tract-infection
#5
Batya Isaacson, Tehila Hadad, Ariella Glasner, Chamutal Gur, Zvi Granot, Gilad Bachrach, Ofer Mandelboim
Urinary tract infection (UTI) is the most common type of bacterial infection in humans. Fifty percent of all women will experience at least one UTI in their lifetime, with uropathogenic Escherichia coli (UPEC) accounting for 80% of reported cases. UTI evokes a complex, well-timed immune response that is crucial for bacterial clearance. The majority of immune cells participating in the immune response are absent from the healthy bladder, and the mechanisms used to recruit them upon UTI are not fully understood...
July 5, 2017: Cell Reports
https://www.readbyqxmd.com/read/28682474/autologous-serum-supplement-favours-in-vitro-regenerative-paracrine-factors-synthesis
#6
Nazmul Haque, Noor Hayaty Abu Kasim, Noor Lide Abu Kassim, Mohammad Tariqur Rahman
OBJECTIVES: Foetal bovine serum (FBS) is often the serum supplement of choice for in vitro human cell culture. This study compares the effect of FBS and autologous human serum (AuHS) supplement in human peripheral blood mononuclear cell (PBMC) culture to prepare secretome. MATERIALS AND METHODS: The PBMC (n = 7) were cultured either in RPMI-1640 containing L-glutamine and 50 units/ml Penicillin-Streptomycin (BM) or in BM with either AuHS or FBS. Viability, proliferation and differentiation of PBMC were evaluated...
July 6, 2017: Cell Proliferation
https://www.readbyqxmd.com/read/28677769/valproic-acid-enforces-the-priming-effect-of-sphingosine-1-phosphate-on-human-mesenchymal-stem-cells
#7
Jisun Lim, Seungun Lee, Hyein Ju, Yonghwan Kim, Jinbeom Heo, Hye-Yeon Lee, Kyung-Chul Choi, Jaekyoung Son, Yeon-Mok Oh, In-Gyu Kim, Dong-Myung Shin
Engraftment and homing of mesenchymal stem cells (MSCs) are modulated by priming factors including the bioactive lipid sphingosine-1-phosphate (S1P), by stimulating CXCR4 receptor signaling cascades. However, limited in vivo efficacy and the remaining priming molecules prior to administration of MSCs can provoke concerns regarding the efficiency and safety of MSC priming. Here, we showed that valproic acid (VPA), a histone deacetylase inhibitor, enforced the priming effect of S1P at a low dosage for human umbilical cord-derived MSCs (UC-MSCs)...
July 3, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28677743/yi-guan-jian-decoction-may-enhance-hepatic-differentiation-of-bone-marrow%C3%A2-derived-mesenchymal-stem-cells-via-sdf%C3%A2-1-in%C3%A2-vitro
#8
Lin-Lin Fu, Bing-Yao Pang, Ying Zhu, Ling Wang, Ai-Jing Leng, Hai-Long Chen
A previous study reported that Yi Guan Jian (YGJ) may increase the proliferation and differentiation of hepatic oval cells in a rat liver cirrhosis model. The aim of the present study was to investigate the effect and mechanism of action of YGJ on inducing hepatic differentiation in bone marrow‑derived mesenchymal stem cells (BM‑MSCs) via stromal‑cell derived factor‑1 (SDF‑1). Murine BM‑MSCs were isolated with whole bone marrow adherence, then identified by immunocytochemical staining and flow cytometry...
September 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28662672/fibroblast-growth-factor-2-supports-osteoblastic-niche-cells-during-hematopoietic-homeostasis-recovery-after-bone-marrow-suppression
#9
Kyung-Ae Yoon, YeonSung Son, Young-Jin Choi, Joo-Hyun Kim, Je-Yoel Cho
BACKGROUND: Hematopoietic stem cell (HSC) maintenance requires a specific microenvironment. HSC niches can be activated by tissue damaging chemotherapeutic drugs and various cell signaling molecules such as SDF-1 and FGF, which might also result in bone marrow stress. Recent research has insufficiently shown that endosteal osteolineage cells and other niche constituents recover after marrow injury. METHODS: We investigated the role of FGF2 in the osteoblastic niche cells during hematopoietic homeostasis recovery after bone marrow injury...
June 29, 2017: Cell Communication and Signaling: CCS
https://www.readbyqxmd.com/read/28656722/formation-of-spheroids-by-dental-pulp-derived-cells-in-the-presence-of-hypoxia-and-hypoxia-mimetic-agents
#10
K Janjić, B Lilaj, A Moritz, H Agis
AIM: To evaluate the impact of hypoxia and hypoxia mimetic agents (HMA) on the formation and activity of spheroids by dental pulp-derived cells (DPC). METHODOLOGY: DPC on agarose-coated plates were treated with hypoxia and the HMA dimethyloxallyl glycine (DMOG), desferrioxamine (DFO) and L-mimosine (L-MIM). Images of spheroids were taken directly after seeding and at 6h and 24h. Spheroid sizes were quantified by area measurement with ImageJ software. Viability was assessed with Live-Dead staining, MTT and resazurin-based toxicity assay...
June 28, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28641614/-effect-of-microrna-214-on-migration-of-cord-blood-cd34-cells-induced-by-bone-marrow-mesenchymal-stem-cells
#11
Jing Ming, Jian Wang, Xu Ye, Hui Xu, Xing-Bing Wang
OBJECTIVE: To investigate the possible effect of MicroRNA-214 (miR-214) on migration of umbilical cord blood CD34(+) hematopoietic stem/progenitor cells induced by BM-MSC. METHODS: After transfection of the inhibitor or mimic of miR-214, the cultured supernatant of BM-MSC were collected respectively. The expression of miR-214 in BM-MSC was detected by real time quantitative PCR, the effect of supernatant on CD34(+) cell migration was evaluated by chemotaxis assays...
June 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28638088/chemokine-receptor-cxcr4-regulates-camkii-creb-pathway-in-spinal-neurons-that-underlies-cancer-induced-bone-pain
#12
Xue-Ming Hu, Hui Zhang, Heng Xu, Hai-Long Zhang, Li-Ping Chen, Wen-Qiang Cui, Wei Yang, Wen Shen
We previously demonstrated that the chemokine receptor CXCR4 plays an important role in cancer-induced bone pain by activating spinal neurons and glial cells. However, the specific neuronal mechanism of CXCR4 signaling is not clear. We further report that CXCR4 contributes to the activation of the neuronal CaMKII/CREB pathway in cancer-induced bone pain. We used a tumor cell implantation (TCI) model and observed that CXCR4, p-CaMKII and p-CREB were persistently up-regulated in spinal neurons. CXCR4 also co-expressed with p-CaMKII and p-CREB, and mediated p-CaMKII and p-CREB expression after TCI...
June 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28632184/crude-fucoidan-extracts-impair-angiogenesis-in-models-relevant-for-bone-regeneration-and-osteosarcoma-via-reduction-of-vegf-and-sdf-1
#13
Fanlu Wang, Harald Schmidt, Dijana Pavleska, Thees Wermann, Andreas Seekamp, Sabine Fuchs
The marine origin polysaccharide fucoidan combines multiple biological activities. As demonstrated by various studies in vitro and in vivo, fucoidans show anti-viral, anti-tumor, anti-oxidant, anti-inflammatory and anti-coagulant properties, although the detailed molecular action remains to be elucidated. The aim of the present study is to assess the impact of crude fucoidan extracts, on the formation of vascular structures in co-culture models relevant for bone vascularization during bone repair and for vascularization processes in osteosarcoma...
June 20, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28598857/sdf-1-overexpression-by-mesenchymal-stem-cells-enhances-gap-43-positive-axonal-growth-following-spinal-cord-injury
#14
Andrew Nathaniel Stewart, Jessica Jane Matyas, Ryan Matthew Welchko, Alison Delanie Goldsmith, Sarah Elizabeth Zeiler, Ute Hochgeschwender, Ming Lu, Zhenhong Nan, Julien Rossignol, Gary Leo Dunbar
PURPOSE: Utilizing genetic overexpression of trophic molecules in cell populations has been a promising strategy to develop cell replacement therapies for spinal cord injury (SCI). Over-expressing the chemokine, stromal derived factor-1 (SDF-1α), which has chemotactic effects on many cells of the nervous system, offers a promising strategy to promote axonal regrowth following SCI. The purpose of this study was to explore the effects of human SDF-1α, when overexpressed by mesenchymal stem cells (MSCs), on axonal growth and motor behavior in a contusive rat model of SCI...
June 6, 2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/28598080/-expression-of-cxcr7-in-gastric-cancer-cells-and-its-effect-on-the-migration-and-invasion-of-sgc-7901-cells
#15
Hai-Tao Shi, A-Meng Shi, Yan Wang, Lei Dong, Gang Zhao, Yong Li, Xiao-Lan Lu
OBJECTIVES: To determine the expression of chemokine (C-X-C motif) receptor 7 (CXCR7) in five gastric cancer cell lines with various degrees of differentiation, and the effect of silencing CXCR7 on the migration and invasion of SGC-7901 cells. METHODS: The expression of CXCR7 in gastric cell lines (HGC-27, MGC-803, SGC-7901, BGC-823 and MKN-28) was detected by Western bolt and RT-PCR. The SGC-7901 cells were transfected with liposome of CXCR7 siRNA to silence CXCR7 gene, and then treated with stromal-derived factor-1 (SDF-1)-the ligand of CXCR7...
September 2016: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/28581520/klf10-loss-in-the-pancreas-provokes-activation-of-sdf-1-and-induces-distant-metastases-of-pancreatic-ductal-adenocarcinoma-in-the-kras-g12d-p53-flox-flox-model
#16
C-C Weng, J R Hawse, M Subramaniam, V H S Chang, W C Y Yu, W-C Hung, L-T Chen, K-H Cheng
Krüppel-like transcription factor 10 (KLF10), also named as TIEG1, plays essential roles in mediating transforming growth factor beta (TGFβ) signaling and has been shown to function as a tumor suppressor in multiple cancer types. However, its roles in mediating cancer progression in vivo have yet to be fully characterized. Here, we have employed two well-characterized Pdx-1CreLSL-Kras(G12D) and Pdx-1CreLSL-Kras(G12D)p53(L/L) pancreatic cancer models to ablate KLF10 expression and determine the impact of KLF10 deletion on tumor development and progression...
June 5, 2017: Oncogene
https://www.readbyqxmd.com/read/28578888/comparative-evaluation-of-chemotactic-factor-effect-on-migration-and-differentiation-of-stem-cells-of-the-apical-papilla
#17
Sara Fayazi, Koyo Takimoto, Anibal Diogenes
INTRODUCTION: Cell homing strategies could potentially be used in regenerative endodontic procedures (REPs) to promote the progressive coronal migration of stem cells, including stem cells of the apical papilla (SCAPs), along with formation of a new vascular network without the need for intentional apical trauma and intracanal bleeding. Although many chemotactic factors have been investigated for different mesenchymal stem cells, their effect on SCAP migration and differentiation is not fully understood...
June 1, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28576885/osteoporosis-and-ageing-affects-the-migration-of-stem-cells-and-this-is-ameliorated-by-transfection-with-cxcr4
#18
A Sanghani-Kerai, M Coathup, S Samazideh, P Kalia, L Di Silvio, B Idowu, G Blunn
OBJECTIVES: Cellular movement and relocalisation are important for many physiologic properties. Local mesenchymal stem cells (MSCs) from injured tissues and circulating MSCs aid in fracture healing. Cytokines and chemokines such as Stromal cell-derived factor 1(SDF-1) and its receptor chemokine receptor type 4 (CXCR4) play important roles in maintaining mobilisation, trafficking and homing of stem cells from bone marrow to the site of injury. We investigated the differences in migration of MSCs from the femurs of young, adult and ovariectomised (OVX) rats and the effect of CXCR4 over-expression on their migration...
June 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28571106/sdf-1%C3%AE-peptide-tethered-polyester-facilitates-tissue-repair-by-endogenous-cell-mobilization-and-recruitment
#19
Muhammad Shafiq, Deling Kong, Soo Hyun Kim
The design of bioactive scaffolds that can invoke host's own regenerative capabilities and facilitate endogenous tissue repair hold great promise. This study aims to evaluate the potential of stromal cell-derived factor 1 alpha (SDF-1α)-derived peptide and heparin tethered poly(L-lactide-co-ε-caprolactone) (PLCL) copolymers for blood vessel regeneration applications. Amino acid analysis and toluidine blue assays confirm successful conjugation of SDF-1α peptide and heparin with the PLCL copolymers. Assessment of biocompatibility after subcutaneous implantation in rats discloses higher cell infiltration in SDF-1α peptide (SDF-1 group) or SDF-1 peptide and heparin (SDF-1/heparin group) than the control group...
June 1, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28559980/all-trans-retinoic-acid-activates-sdf-1-cxcr4-rock2-signaling-pathway-to-inhibit-chondrogenesis
#20
Qin-Xiao Hu, Xue-Dong Li, Peng Xie, Chu-Cheng Wu, Gui-Zhou Zheng, Fei-Xiang Lin, Da Xie, Qi-Hao Zhang, De-Zhong Liu, Yun-Guo Wang, Bo Chang, Shi-Xin Du
Recent studies have indicated that ATRA inhibits chondrogenesis and can lead to congenital clubfoot (CCF). The molecular mechanism of ATRA-induced chondrogenesis is not clear. As RhoA/ROCK and SDF-1/CXCR4 signaling play important molecular roles for a variety of cellular processes, we hypothesized that RhoA/ROCK2 and SDF-1/CXCR4 signaling are involved in ATRA-induced chondrogenesis in rat embryo hind limb bud mesenchymal cells (rEHBMCs). We found that ATRA dose-dependently inhibits proliferation and expression of chondrogenic transcription factors (SOX9 and COL2A1) in rEHBMCs...
2017: American Journal of Translational Research
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