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https://www.readbyqxmd.com/read/28379992/a-novel-recombinant-antibody-specific-to-full-length-stromal-derived-factor-1-for-potential-application-in-biomarker-studies
#1
Daniel I Bromage, Stasa Taferner, Mahesh Pillai, Derek M Yellon, Sean M Davidson
BACKGROUND: Stromal derived factor-1α (SDF-1α/CXCL12) is a chemokine that is up-regulated in diseases characterised by tissue hypoxia, including myocardial infarction, ischaemic cardiomyopathy and remote ischaemic conditioning (RIC), a technique of cyclical, non-injurious ischaemia applied remote from the heart that protects the heat from lethal ischaemia-reperfusion injury. Accordingly, there is considerable interest in SDF-1α as a potential biomarker of such conditions. However, SDF-1α is rapidly degraded and inactivated by dipeptidyl peptidase 4 and other peptidases, and the kinetics of intact SDF-1α remain unknown...
2017: PloS One
https://www.readbyqxmd.com/read/28358371/cell-based-therapy-using-mir-302-367-expressing-cells-represses-glioblastoma-growth
#2
Mohamed Fareh, Fabien Almairac, Laurent Turchi, Fanny Burel-Vandenbos, Philippe Paquis, Denys Fontaine, Sandra Lacas-Gervais, Marie-Pierre Junier, Hervé Chneiweiss, Thierry Virolle
Glioblastomas are incurable primary brain tumors that affect patients of all ages. The aggressiveness of this cancer has been attributed in part to the persistence of treatment-resistant glioblastoma stem-like cells. We have previously discovered the tumor-suppressor properties of the microRNA cluster miR-302-367, representing a potential treatment for glioblastoma. Here, we attempted to develop a cell-based therapy by taking advantage of the capability of glioma cells to secrete exosomes that enclose small RNA molecules...
March 30, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28352190/sdf1-3-a-polymorphism-is-associated-with-increased-risk-of-hematological-malignancy-a-meta-analysis
#3
Xiaowen Zhang, Yang Fan, Zhijie Li
CXCL12 (also named SDF1), a member of the chemokine family, has been demonstrated to play an important role in the progression of multiple types of hematological malignancy. Several recent studies have shown that SDF1-3'A polymorphism (rs1801157) is associated with susceptibility to hematological malignancy, but published studies' results are disputed. Therefore, we performed a meta-analysis to evaluate the relationship between SDF1-3'A polymorphism and the risk of hematological malignancy based on the existing literature...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28335041/the-cerebellum-and-its-wrapping-meninge-developmental-interplay-between-two-major-structures
#4
Martin Catala
Meninges have long been considered as a protective and supportive tissue for the central nervous system. Nevertheless, new developmental roles are now attributed to them. The meninges that surround the cerebellum come from the cephalic mesoderm. They are essential for the cerebellum to develop normally. They induce and maintain the basal lamina and glia limitans. In the absence of these structures, the external granular cells of the cerebellum migrate aberrantly and penetrate the subarachnoid space. The molecules involved in the recognition between the cerebellar primordium and the basal lamina belong to two groups in humans: dystroglycan and laminin on the one hand, and GPR56 and collagen III on the other...
March 23, 2017: Neuropediatrics
https://www.readbyqxmd.com/read/28253363/mutation-in-cpsf6-cfim68-cleavage-and-polyadenylation-specificity-factor-subunit-6-causes-short-3-utrs-and-disturbs-gene-expression-in-developing-embryos-as-revealed-by-an-analysis-of-primordial-germ-cell-migration-using-the-medaka-mutant-naruto
#5
Takao Sasado, Hisato Kondoh, Makoto Furutani-Seiki, Kiyoshi Naruse
Our previous studies analyzing medaka mutants defective in primordial germ cell (PGC) migration identified cxcr4b and cxcr7, which are both receptors of the chemokine sdf1/cxcl12, as key regulators of PGC migration. Among PGC migration mutants, naruto (nar) is unique in that the mutant phenotype includes gross morphological abnormalities of embryos, suggesting that the mutation affects a broader range of processes. A fine genetic linkage mapping and genome sequencing showed the nar gene encodes Cleavage and Polyadenylation Specificity Factor subunit 6 (CPSF6/CFIm68)...
2017: PloS One
https://www.readbyqxmd.com/read/28236026/downregulation-of-mir-221-3p-contributes-to-il-1%C3%AE-induced-cartilage-degradation-by-directly-targeting-the-sdf1-cxcr4-signaling-pathway
#6
Xin Zheng, Feng-Chao Zhao, Yong Pang, Dong-Ya Li, Sheng-Cheng Yao, Shao-Song Sun, Kai-Jin Guo
Osteoarthritis (OA) is characterized by degradation of chondrocyte extracellular matrix (ECM). Accumulating evidence suggests that microRNAs (miRNAs) are associated with OA, but little is known of their function in chondrocyte ECM degradation. The objective of this study was to investigate the expression and function of miRNAs in OA. miRNA expression profile was determined in OA cartilage tissues and controls, employing Solexa sequencing and reverse transcription quantitative PCR (RT-qPCR). According to a modified Mankin scale, cartilage degradation was evaluated...
February 24, 2017: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/28196519/erratum-to-sdf1-in-the-dorsal-corticospinal-tract-promotes-cxcr4-cell-migration-after-spinal-cord-injury
#7
Vicki M Tysseling, Divakar S Mithal, Vibhu Sahni, Derin Birch, Hosung Jung, Richard J Miller, John A Kessler
No abstract text is available yet for this article.
February 14, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28116224/stromal-cell-derived-growth-factor-1-alpha-elastin-like-peptide-fusion-protein-promotes-cell-migration-and-revascularization-of-experimental-wounds-in-diabetic-mice
#8
Agnes Yeboah, Tim Maguire, Rene Schloss, Francois Berthiaume, Martin L Yarmush
Objective: In previous work, we demonstrated the development of a novel fusion protein containing stromal cell-derived growth factor-1 alpha juxtaposed to an elastin-like peptide (SDF1-ELP), which has similar bioactivity, but is more stable in elastase than SDF1. Herein, we compare the ability of a single topical application of SDF1-ELP to that of SDF1 in healing 1 × 1 cm excisional wounds in diabetic mice. Approach: Human Leukemia-60 cells were used to demonstrate the chemotactic potential of SDF1-ELP versus SDF1 in vitro...
January 1, 2017: Advances in Wound Care
https://www.readbyqxmd.com/read/28010141/differential-expression-of-visfatin-leptin-stromal-cell-derived-factor-1%C3%AE-endothelial-nitric-oxide-synthase-and-vascular-endothelial-growth-factor-in-human-leiomyomas
#9
Bo Sun Joo, Min Jung Park, Chang-Woon Kim, Kyu Sup Lee, Jong Kil Joo
AIM: This study was aimed to understand expressions of the visfatin, leptin, stromal cell derived factor (SDF)-1α, endothelial nitric oxide synthase (eNOS), and vascular endothelial growth factor (VEGF) in human uterine leiomyomas (UL) and normal myometrium. METHOD: This study investigated expression of visfatin, leptin, SDF-1α, eNOS and VEGF in 23 uterine leiomyoma patients and 10 normal myometrium by RT-PCR and western blot. Messenger RNA transcripts of SDF-1α, eNOS, VEGF and hypoxia inducible factor-1α (HIF-1α) were analyzed according to the size of UL by real-time PCR...
December 23, 2016: Gynecological Endocrinology
https://www.readbyqxmd.com/read/27916459/molecular-characterization-of-sdf1-and-cxcr4-in-the-mozambique-tilapia-oreochromis-mossambicus
#10
Jorge Amat-Fernandez, Michael J Hammond, Di Liang, Tianfang Wang, Tomer Ventura, Abigail Elizur, Scott F Cummins
Animal sexual reproduction relies on primordial germ cells (PGCs), the predecessors of the germ cell lineage, giving rise to either spermatogonia or oogonia after the completion of gonadal differentiation. There is limited information on the mechanism of PGC migration leading to the formation of the primordial gonad in Perciform fish. Oreochromis mossambicus, a tilapiine species, was investigated that is a commercially important aquaculture species in many parts of the world while in other areas it has become an invasive pest...
January 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/27907131/itraq-based-quantitative-proteomic-comparison-of-early-and-late-passage-human-dermal-papilla-cell-secretome-in-relation-to-inducing-hair-follicle-regeneration
#11
Huan Zhang, Ning-Xia Zhu, Keng Huang, Bo-Zhi Cai, Yang Zeng, Yan-Ming Xu, Yang Liu, Yan-Ping Yuan, Chang-Min Lin
Alopecia is an exceedingly prevalent problem that lacks effective therapy. Recently, research has focused on early-passage dermal papilla cells (DPCs), which have hair inducing activity both in vivo and in vitro. Our previous study indicated that factors secreted from early-passage DPCs contribute to hair follicle (HF) regeneration. To identify which factors are responsible for HF regeneration and why late-passage DPCs lose this potential, we collected 48-h-culture medium (CM) from both of passage 3 and 9 DPCs, and subcutaneously injected the DPC-CM into NU/NU mice...
2016: PloS One
https://www.readbyqxmd.com/read/27853331/effects-of-platelet-rich-plasma-platelet-rich-fibrin-with-and-without-stromal-cell-derived-factor-1-on-repairing-full-thickness-cartilage-defects-in-knees-of-rabbits
#12
Soghra Bahmanpour, Maryam Ghasemi, Mohsen Sadeghi-Naini, Iraj Ragerdi Kashani
BACKGROUND: The purpose of this study was to create biomaterial scaffolds like platelet-rich plasma (PRP) and platelet-rich fibrin (PRF) containing stromal cell-derived factor-1 (SDF1) as a chemokine to induce hyaline cartilage regeneration of rabbit knee in a full thickness defect. METHODS: We created a full thickness defect in the trochlear groove of thirty-six bilateral knees of eighteen mature male rabbits. The knees were randomly divided into six groups (group I: untreated control, group II: PRP, group III: PRF, group IV: Gelatin+SDF1, group V: PRP+SDF1, and group VI: PRF+SDF1)...
November 2016: Iranian Journal of Medical Sciences
https://www.readbyqxmd.com/read/27832196/stromal-cell-derived-factor-1-polymorphism-in-retinal-vein-occlusion
#13
Andrea Szigeti, Mónika Ecsedy, Miklós Schneider, Lilla Lénárt, Balázs Lesch, Zoltán Zsolt Nagy, Andrea Fekete, Zsuzsanna Récsán
BACKGROUND: Stromal cell-derived factor 1 (SDF1) has crucial role in the regulation of angiogenesis and ocular neovascularisation (NV). The purpose of this study was to evaluate the association between SDF1-3'G(801)A polymorphism and NV complications of retinal vein occlusion (RVO). METHODS: 130 patients with RVO (median age: 69.0, range 35-93 years; male/female- 58/72; 55 patients had central RVO, 75 patients had branch RVO) were enrolled in this study. In the RVO group, 40 (30...
2016: PloS One
https://www.readbyqxmd.com/read/27795873/chloroquine-containing-hpma-copolymers-as-polymeric-inhibitors-of-cancer-cell-migration-mediated-by-the-cxcr4-sdf-1-chemokine-axis
#14
Fei Yu, Ying Xie, Yan Wang, Zheng-Hong Peng, Jing Li, David Oupický
Chloroquine-containing HPMA copolymers (pCQs) were synthesized for the first time by copolymerization of methacryloylated hydroxychloroquine and HPMA. The copolymers showed lower cytotoxicity when compared with hydroxychloroquine. Treatment of cancer cells with pCQ resulted in decreased surface expression of chemokine receptor CXCR4. The pCQ copolymers showed effective inhibition of CXCR4/SDF1-mediated cancer cell migration that was fully comparable with a commercial small-molecule CXCR4 antagonist AMD3100...
March 15, 2016: ACS Macro Letters
https://www.readbyqxmd.com/read/27768773/optochemokine-tandem-for-light-control-of-intracellular-ca2
#15
Katrin Feldbauer, Jan Schlegel, Juliane Weissbecker, Frank Sauer, Phillip G Wood, Ernst Bamberg, Ulrich Terpitz
An optochemokine tandem was developed to control the release of calcium from endosomes into the cytosol by light and to analyze the internalization kinetics of G-protein coupled receptors (GPCRs) by electrophysiology. A previously constructed rhodopsin tandem was re-engineered to combine the light-gated Ca2+-permeable cation channel Channelrhodopsin-2(L132C), CatCh, with the chemokine receptor CXCR4 in a functional tandem protein tCXCR4/CatCh. The GPCR was used as a shuttle protein to displace CatCh from the plasma membrane into intracellular areas...
2016: PloS One
https://www.readbyqxmd.com/read/27749227/differing-local-and-systemic-inflammatory-burden-in-polyarticular-psoriatic-arthritis-and-rheumatoid-arthritis-patients-on-anti-tnf-treatment-in-clinical-remission
#16
Julio Ramírez, José Iniciarte-Mundo, Andrea Cuervo, Virginia Ruiz-Esquide, M Victoria Hernández, Raimón Sanmartí, Juan D Cañete
OBJECTIVES: To analyse clinical, serological and sonographic differences between rheumatoid arthritis (RA) and polyarticular psoriatic arthritis (PsA) patients on anti-TNF therapy in clinical remission. METHODS: Angiogenic and proinflammatory cytokine serum levels were determined by multiplex ELISA in patients with RA and PsA in clinical remission (DAS28-ESR<2.6), clinically-active RA patients (DAS28>3.2) and healthy controls. Ultrasound (US) scans were made of both wrists and hands...
October 7, 2016: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/27714847/the-effects-of-aging-and-sex-steroid-deficiency-on-the-murine-skeleton-are-independent-and-mechanistically-distinct
#17
Serra Ucer, Srividhya Iyer, Ha-Neui Kim, Li Han, Christine Rutlen, Kelly Allison, Jeff D Thostenson, Rafael de Cabo, Robert L Jilka, Charles O'Brien, Maria Almeida, Stavros C Manolagas
Old age and sex steroid deficiency are the two most critical factors for the development of osteoporosis. It remains unknown, however, whether the molecular culprits of the two conditions are similar or distinct. We show herein that at 19.5 months of age-a time by which the age-dependent decline of cortical and cancellous bone mass and cortical porosity were fully manifested in C57BL/6J mice-these animals remained functionally estrogen sufficient. Transgenic mice with conditional expression of mitochondria-targeted catalase-a potent H2 O2 inactivating enzyme-in cells of the myeloid lineage (mitoCAT;LysM-Cre mice) were protected from the loss of cortical, but not cancellous, bone caused by gonadectomy in either sex...
March 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/27693460/vascular-mimicry-formation-is-promoted-by-paracrine-tgf-%C3%AE-and-sdf1-of-cancer-associated-fibroblasts-and-inhibited-by-mir-101-in-hepatocellular-carcinoma
#18
Jine Yang, Yang Lu, Ying-Ying Lin, Zhi-Yuan Zheng, Jian-Hong Fang, Shuai He, Shi-Mei Zhuang
Vascular mimicry (VM) describes the phenomenon that tumor cells but not endothelial cells form vascular-like channels, which provide blood perfusion for tumor tissues. VM is associated with tumor growth, metastasis and worse survival of different cancers. The mechanisms of VM formation remain largely unknown. We showed that the conditioned medium of cancer-associated fibroblast (CM-CAF) promoted tumor cells to form capillary-like structure in vitro. Consistently, co-implantation of CAFs with tumor cells significantly enhanced VM formation in mouse xenografts, and higher amount of CAFs was found in VM(+) human HCC tissues compared to VM(-) ones...
September 28, 2016: Cancer Letters
https://www.readbyqxmd.com/read/27669438/cxcr4-inhibitors-could-benefit-to-her2-but-not-to-triple-negative-breast-cancer-patients
#19
S Lefort, A Thuleau, Y Kieffer, P Sirven, I Bieche, E Marangoni, A Vincent-Salomon, F Mechta-Grigoriou
The CXCR4 receptor and its ligand CXCL12 (also named stromal cell-derived factor 1, SDF1) have a critical role in chemotaxis and homing, key steps in cancer metastasis. Although myofibroblasts expressing CXCL12 are associated with the presence of axillary metastases in HER2 breast cancers (BC), the therapeutic interest of targeting CXCR4/CXCL12 axis in the different BC subtypes remains unclear. Here, we investigate this question by testing antitumor activity of CXCR4 inhibitors in patient-derived xenografts (PDX), which faithfully reproduce human tumor properties...
March 2, 2017: Oncogene
https://www.readbyqxmd.com/read/27607427/sdf1-polymorphisms-influence-outcome-in-patients-with-symptomatic-cardiovascular-disease
#20
Dominik Rath, Elke Schaeffeler, Stefan Winter, Jens Hewer, Karin Müller, Michal Droppa, Fabian Stimpfle, Meinrad Gawaz, Matthias Schwab, Tobias Geisler
BACKGROUND: SDF1 and its cognate receptors CXCR4 and CXCR7 are involved in myocardial repair and are associated with outcome in cardiovascular patients. Hence, we aimed to investigate clinically significant SDF1 SNPs for their prognostic impact in patients with cardiovascular disease. METHODS AND RESULTS: Genotyping for selected SDF1 variants (rs1065297, rs2839693, rs1801157, rs266087, rs266085 and rs266089 was performed in patients (n = 872) who underwent percutaneous coronary intervention...
2016: PloS One
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