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https://www.readbyqxmd.com/read/28322746/truncation-of-cxcl12-by-cd26-reduces-its-cxc-chemokine-receptor-4-and-atypical-chemokine-receptor-3-dependent-activity-on-endothelial-cells-and-lymphocytes
#1
Rik Janssens, Anneleen Mortier, Daiane Boff, Pieter Ruytinx, Mieke Gouwy, Bo Vantilt, Olav Larsen, Viktorija Daugvilaite, Mette M Rosenkilde, Marc Parmentier, Sam Noppen, Sandra Liekens, Jo Van Damme, Sofie Struyf, Mauro M Teixeira, Flávio A Amaral, Paul Proost
The chemokine CXCL12 or stromal cell-derived factor 1/SDF-1 attracts hematopoietic progenitor cells and mature leukocytes through the G protein-coupled CXC chemokine receptor 4 (CXCR4). In addition, it interacts with atypical chemokine receptor 3 (ACKR3 or CXCR7) and glycosaminoglycans. CXCL12 activity is regulated through posttranslational cleavage by CD26/dipeptidyl peptidase 4 that removes two N-terminal amino acids. CD26-truncated CXCL12 does not induce calcium signaling or chemotaxis of mononuclear cells...
March 16, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28318166/-exploratory-study-on-influence-of-biopsy-to-biological-behavior-of-tca8113-transplanted-tumor
#2
Liu Jiyuan, Pan Jian, Hua Chengge, Wu Yunlong, Luo Zhengwen, Tang Xiufa
OBJECTIVE: We established an animal model of nude mice with Tca8113 tumor and cut some tissue for biopsy. We also determined the biological behavior and mechanisms of the tumor. METHODS: The mice were divided into two groups randomly. Mice in both groups were injected with Tca8113 cells into their tongues. The survival condition, growth of primary focus, and metastasis were observed. Hematoxylin and eosin staining and immunohistochemistry were performed on nuclear factor κB (NF-κB), matrix metallopeptidase 9 (MMP-9), vascular endothelial growth factor (VEGF), stromal cell-derived factor 1 (SDF-1), and Ki67 to determine their distributions within the tumor...
December 1, 2016: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28303409/cardiovascular-inflammation-is-reduced-with-methotrexate-in-diabetes
#3
Adrian Quan, Yi Pan, Krishna K Singh, John Polemidiotis, Hwee Teoh, Howard Leong-Poi, Subodh Verma
Diabetes increases the risk of vascular events and mortality. While earlier type 2 diabetes trials demonstrated that intensive glucose lowering reduces microvascular complications, it is only recently that treatment with some of the newer antihyperglycemic agents has been associated with macrovascular benefits. We report herein that db/db mice concomitantly fed the Western diet and treated with the anti-inflammatory agent methotrexate display a less aggressive inflammatory (lower serum IL-1β, IL-6, SDF-1, and TNFα levels; higher circulating adiponectin, IL-12p70 and IL-10 concentrations; lower aortic VCAM-1 levels) profile than their saline-treated counterpart...
March 16, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28303319/effect-of-sdf-1-cxcr4-signaling-antagonist-amd3100-on-bone-mineralization-in-distraction-osteogenesis
#4
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/28303135/a-human-lin-cd123-cd127-low-population-endowed-with-ilc-features-and-migratory-capabilities-contributes-to-immunopathological-hallmarks-of-psoriasis
#5
Luz María Mora-Velandia, Octavio Castro-Escamilla, Andrés González Méndez, Cristina Aguilar-Flores, Martha Velázquez-Avila, María Isabel Tussié-Luna, Juan Téllez-Sosa, César Maldonado-García, Fermín Jurado-Santacruz, Eduardo Ferat-Osorio, Jesus Martínez-Barnetche, Rosana Pelayo, Laura C Bonifaz
Innate lymphoid cells (ILC) are members of a heterogeneous family with a lymphoid origin that mimics the T helper (Th) cytokine profile. ILC are involved in early effector cytokine-mediated responses during infections in peripheral tissues. ILC also play an important role in chronic skin inflammatory diseases, including psoriasis. Although classical ILC express CD127, it has been recently reported that the presence of non-classical CD127(-) ILC populations and an early ILC precursor (EILP) CD127(low). ILC development has predominately been investigated in mouse models...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28294401/endothelial-progenitor-cell-mobilization-in-preterm-infants-with-sepsis-is-associated-with-improved-survival
#6
Vahid Siavashi, Simin Asadian, Masoud Taheri-Asl, Samaneh Keshavarz, Mohamad Zamani-Ahmadmahmudi, Seyed Mahdi Nassiri
Microvascular dysfunction plays a key role in the pathology of sepsis, leading to multi-organ failure and death. Circulating endothelial progenitor cells (cEPCs) are critically involved in the maintenance of the vascular homeostasis in both physiological and pathological contexts. In this study, concentration of cEPCs in preterm infants with sepsis was determined to recognize whether the EPC mobilization would affect the clinical outcome of infantile sepsis. 133 preterm infants (81 with sepsis and 52 without sepsis) were enrolled in this study...
March 10, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28285461/effects-of-sdf-1-cxcr4-on-acute-lung-injury-induced-by-cardiopulmonary-bypass
#7
Hai Shi, Rujian Lu, Shuo Wang, Honglin Chen, Fei Wang, Kun Liu
Acute lung injury (ALI) is one of the most important complications after cardiopulmonary bypass (CPB) and the complex pathophysiology remains to be resolved incomplete. SDF-1/CXCR4 chemokine axis can chemotactically accumulate inflammatory cell to local tissue and regulate the release of inflammatory factors, and SDF-1 has a strong chemotaxis effect on neutrophils with CXCR4. Since CPB animal model was difficult to establish, there was still no report about the effect of SDF-1/CXCR4 on neutrophil chemotaxis in ALI after CPB...
March 11, 2017: Inflammation
https://www.readbyqxmd.com/read/28284103/a-vegf-delivery-system-targeting-mi-improves-angiogenesis-and-cardiac-function-based-on-the-tropism-of-mscs-and-layer-by-layer-self-assembly
#8
Ge Liu, Li Li, Da Huo, Yanzhao Li, Yangxiao Wu, Lingqing Zeng, Panke Cheng, Malcolm Xing, Wen Zeng, Chuhong Zhu
Myocardial infarction (MI) is a serious ischemic condition affecting many individuals around the world. Vascular endothelial growth factor (VEGF) is considered a promising factor for enhancing cardiac function by promoting angiogenesis. However, the lack of a suitable method of VEGF delivery to the MI area is a serious challenge. In this study, we screened a suitable delivery carrier with favorable biocompatibility that targeted the MI area using the strategy of an inherent structure derived from the body and that was based on characteristics of the MI...
March 2, 2017: Biomaterials
https://www.readbyqxmd.com/read/28282510/cxcr4-cd184-expression-on-stem-cell-harvest-and-cd34-cells-post-transplant
#9
Inas Asfour, Hanaa Afify, Shaza Elkourashy, Maryse Ayoub, Gihan Kamal, Mary Gamal, Ghada Elgohary
OBJECTIVES/BACKGROUND: CXCR4 is a receptor for stromal-derived factor-1 (SDF-1), a molecule that has a chemotactic activity for lymphocytes and is important in homing of hematopoietic stem cells to their adult marrow. We evaluated the CXCR4 (CD184) expression in the harvest cells and in the post-transplant bone marrow (BM) and its relation to engraftment, as determined by the consensus criteria and chimerism. METHODS: This is a prospective study which included 30 patients undergoing hematopoietic stem cell transplantation; 15 patients received autograft and 15 patients received allograft on dates between January 2012 and May 2014...
March 2, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28281844/cxcr7-as-a-chemokine-receptor-for-sdf-1-promotes-gastric-cancer-progression-via-mapk-pathways
#10
Ameng Shi, Haitao Shi, Lei Dong, Shaoxian Xu, Miao Jia, Xiaoyan Guo, Ting Wang
OBJECTIVE: As the alternate receptor for stromal cell-derived factor-1 (SDF-1) except CXCR4, CXCR7 has been shown to be involved in the progression of some malignancies. However, the role of SDF-1/CXCR7 in gastric cancer (GC) remains unclear. MATERIALS AND METHODS: CXCR7 expression was examined in 83 human GC tissues and adjacent non-cancer tissues (ANCTs) by immunohistochemistry, in three human GC cell lines (MGC-803, BGC-823 and SGC-7901) by reverse transcription-PCR and western blot...
March 10, 2017: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/28279221/notch-signaling-plays-a-crucial-role-in-cancer-stem-like-cells-maintaining-stemness-and-mediating-chemotaxis-in-renal-cell-carcinoma
#11
Wei Xiao, Zhiyong Gao, Yixing Duan, Wuxiong Yuan, Yang Ke
BACKGROUND: Cancer stem cells (CSCs) are correlated with the initiation, chemoresistance and relapse of tumors. Notch pathway has been reported to function in CSCs maintenance, but whether it is involved in renal cell carcinoma (RCC) CSCs maintaining stemness remain unclear. This study aims to explore the effect of Notch pathway on stemness of CSCs in RCC and the underlying mechanisms. METHODS: The CD133(+)/CD24(+) cells were isolated from RCC ACHN and Caki-1 cell line using Magnetic-activated cell sorting and identified by Flow cytometry analysis...
March 9, 2017: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/28276640/prospective-review-of-mesenchymal-stem-cells-differentiation-into-osteoblasts
#12
REVIEW
Priyanka Garg, Matthew M Mazur, Amy C Buck, Meghan E Wandtke, Jiayong Liu, Nabil A Ebraheim
Stem cell research has been a popular topic in the past few decades. This review aims to discuss factors that help regulate, induce, and enhance mesenchymal stem cell (MSC) differentiation into osteoblasts for bone regeneration. The factors analyzed include bone morphogenic protein (BMP), transforming growth factor β (TGF-β), stromal cell-derived factor 1 (SDF-1), insulin-like growth factor type 1 (IGF-1), histone demethylase JMJD3, cyclin dependent kinase 1 (CDK1), fucoidan, Runx2 transcription factor, and TAZ transcriptional coactivator...
March 9, 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/28264927/missing-in-metastasis-protein-downregulates-cxcr4-by-promoting-ubiquitination-and-interaction-with-small-rab-gtpases
#13
Lushen Li, Shaneen S Baxter, Ning Gu, Min Ji, Xi Zhan
Surface expression of chemokine receptor CXCR4 is downregulated by MIM, a member of the inverse BAR (I-BAR) domain protein family that recognizes and generates membranes with negative curvatures. Yet, the mechanism for the regulation is unknown. Here, we showed that MIM formed a complex with CXCR4 via binding to E3 ubiquitin ligase AIP4 in response to SDF-1. Overexpression of MIM promoted CXCR4 ubiquitination, inhibited cellular response to SDF-1, caused accumulation and aggregation of MVBs in the cytoplasm, and promoted CXCR4 sorting into MVBs in a manner depending on binding to AIP4...
March 6, 2017: Journal of Cell Science
https://www.readbyqxmd.com/read/28263839/osteoprotegerin-regulates-cancer-cell-migration-through-sdf-1-cxcr4-axis-and-promotes-tumour-development-by-increasing-neovascularization
#14
Zahia Benslimane-Ahmim, Jessica Pereira, Anna Lokajczyk, Blandine Dizier, Isabelle Galy-Fauroux, Anne-Marie Fischer, Dominique Heymann, Catherine Boisson-Vidal
We previously reported that OPG is involved in ischemic tissue neovascularization through the secretion of SDF-1 by pretreated-OPG endothelial colony-forming cells (ECFCs). As the vascularization is one of the key factor influencing the tumour growth and cancer cell dissemination, we investigated whether OPG was able to modulate the invasion of human MNNG-HOS osteosarcoma and DU145 prostate cancer cell lines in vitro and in vivo. Cell motility was analysed in vitro by using Boyden chambers. Human GFP-labelled MMNG-HOS cells were inoculated in immunodeficient mice and the tumour nodules formed were then injected with OPG and/or FGF-2, AMD3100 or 0...
March 3, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28263313/glucocorticoid-hormone-induced-chromatin-remodeling-enhances-human-hematopoietic-stem-cell-homing-and-engraftment
#15
Bin Guo, Xinxin Huang, Scott Cooper, Hal E Broxmeyer
Efficient hematopoietic stem cell (HSC) homing is important for hematopoietic cell transplantation (HCT), especially when HSC numbers are limited, as in the use of cord blood (CB). In a screen of small-molecule compounds, we identified glucocorticoid (GC) hormone signaling as an activator of CXCR4 expression in human CB HSCs and hematopoietic progenitor cells (HPCs). Short-term GC pretreatment of human CB HSCs and HPCs promoted SDF-1-CXCR4-axis-mediated chemotaxis, homing, and long-term engraftment when these cells were transplanted into primary- and secondary-recipient NSG mice...
March 6, 2017: Nature Medicine
https://www.readbyqxmd.com/read/28246930/association-of-plasma-sdf-1-with-bone-mineral-density-body-composition-and-hip-fractures-in-older-adults-the-cardiovascular-health-study
#16
Laura D Carbone, Petra Bůžková, Howard A Fink, John A Robbins, Monique Bethel, Mark W Hamrick, William D Hill
Aging is associated with an increase in circulating inflammatory factors. One, the cytokine stromal cell-derived factor 1 (SDF-1 or CXCL12), is critical to stem cell mobilization, migration, and homing as well as to bone marrow stem cell (BMSC), osteoblast, and osteoclast function. SDF-1 has pleiotropic roles in bone formation and BMSC differentiation into osteoblasts/osteocytes, and in osteoprogenitor cell survival. The objective of this study was to examine the association of plasma SDF-1 in participants in the cardiovascular health study (CHS) with bone mineral density (BMD), body composition, and incident hip fractures...
February 28, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/28246405/amd3100-inhibits-the-migration-and-differentiation-of-neural-stem-cells-after-spinal-cord-injury
#17
Jia-Ming Liu, Kai Zhao, Liu-Xue Du, Yang Zhou, Xin-Hua Long, Xuan-Yin Chen, Zhi-Li Liu
It was reported that CXCR4 signaling played an important role in the migration and differentiation of endogenous neural stem cells after spinal cord injury (SCI). However, the molecular mechanism of it is still unclear. Here, we established a model of SCI in rats and AMD3100 was used to treat them. The rats were then sacrificed and the injured spinal cord specimens were harvested. Additionally, the neural stem cells (NSCs) line was culture and treated with AMD3100 in vitro. Results showed the locomotor function of SCI rats was worse after treated with AMD3100...
December 2017: Scientific Reports
https://www.readbyqxmd.com/read/28245367/-over-expression-of-c3ar1-promotes-hl-60-cell-migration-and-invasion
#18
Qing Yan, Zheng Li, Jian-Nong Cen, Su-Ning Chen, Jian Pan, Shao-Yan Hu
OBJECTIVE: To investigate the effect of C3AR1 on migration and invasion of HL-60 cells and its mechanism. METHODS: The HL-60 cells overexpresing C3AR1 was constructed, and the HL-60-C3AR1 cell line was validated by real-time PCR and Western blot. The migration and invasion assay were performed by using transwell system, the PCR Array and flow cytometry were employed to reveal the potential mechanisms. RESULTS: C3AR1 gene was significantly expressed in AL cell lines, especially in acute myeloid leukemia(AML cell lines)...
February 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28244640/mesenchymal-stem-cell-loaded-cardiac-patch-promotes-epicardial-activation-and-repair-of-the-infarcted-myocardium
#19
Qiang-Li Wang, Hai-Jie Wang, Zhi-Hua Li, Yong-Li Wang, Xue-Ping Wu, Yu-Zhen Tan
Cardiac patch is considered a promising strategy for enhancing stem cell therapy of myocardial infarction (MI). However, the underlying mechanisms for cardiac patch repairing infarcted myocardium remain unclear. In this study, we investigated the mechanisms of PCL/gelatin patch loaded with MSCs on activating endogenous cardiac repair. PCL/gelatin patch was fabricated by electrospun. The patch enhanced the survival of the seeded MSCs and their HIF-1α, Tβ4, VEGF and SDF-1 expression and decreased CXCL14 expression in hypoxic and serum-deprived conditions...
February 28, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28239742/the-role-of-the-sdf-1-cxcr7-axis-on-the-growth-and-invasion-ability-of-endometrial-cancer-cells
#20
Hong-Qin Gu, Zhen-Bo Zhang, Jia-Wen Zhang, Qian-Qian Wang, Xiao-Wei Xi, Yin-Yan He
PURPOSE: Stroma-derived factor-1 (SDF-1) and its receptor C-X-C chemokine receptor-4 (CXCR4) are involved in human endometrial carcinoma (EC) progression. CXCR7 is another important receptor of SDF-1 and has a higher affinity with SDF-1 compared with that of CXCR4. This paper aims to study the effects of the SDF-1/CXCR7 axis on the growth and invasion ability of EC cells. METHODS: CXCR7 expression was evaluated by quantitative RT-PCR, immunohistochemistry, immunocytochemistry and Western blotting in EC cell lines and 30 cases of primary EC tissue from patients...
February 27, 2017: Archives of Gynecology and Obstetrics
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