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Stromal cell derived factor 1

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https://www.readbyqxmd.com/read/28078840/mast-cell-and-cancer-with-special-emphasis-on-il-37-an-anti-inflammatory-and-inhibitor-of-innate-immunity-new-frontiers
#1
F Carinci, G Lessiani, E Spinas, S K Kritas, G Ronconi, Al Caraffa, P Conti
Mast cells (MCs) are mediators of allergy and inflammation and participate in the growth of cancer cells. MCs can promote both neoangiogenesis and tumor growth. They increase in the stroma of certain tumors where they can be recruited by tumor-derived chemoattractants, such as monocyte chemotactic protein-1 (MCP-1), RANTES and stem cell factor (SCF) to selectively secrete inflammatory molecules including chemical mediators and cytokines (TNF, IL-6 and IL-1). However, MC differentiation pathways and heterogeneity in cancer are still poorly understood...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28078743/bivalent-14-mer-peptide-ligands-of-cxcr4-with-polyproline-linkers-with-anti-chemotactic-activity-against-jurkat-cells
#2
Tomohiro Tanaka, Toru Aoki, Wataru Nomura, Hirokazu Tamamura
Interaction of CXCR4 with its endogenous ligand, stromal-cell derived factor-1 (SDF-1)/CXCL12, induces various physiological functions involving chemotaxis. Bivalent ligands with a polyproline helix bearing a cyclic pentapeptide, FC131, were previously shown to have higher binding affinities for CXCR4 than the corresponding monovalent ligands. Bivalent ligands based on a 14-mer peptide T140 derivative with polyproline linkers have been designed and synthesized. The activity of these peptides as well as the effect of bivalency of the ligand on CXCR4 binding has been assessed...
January 12, 2017: Journal of Peptide Science: An Official Publication of the European Peptide Society
https://www.readbyqxmd.com/read/28078186/soluble-receptor-for-advanced-glycation-end-products-improves-stromal-cell-derived-factor-1-activity-in-model-diabetic-environments
#3
Melissa Przyborowski Olekson, Renea A Faulknor, Henry C Hsia, Ann Marie Schmidt, François Berthiaume
Objective: In diabetes, hyperglycemia causes the accumulation of advanced glycation end products (AGEs) that trigger reactive oxygen species (ROS) generation through binding the receptor for AGEs (RAGE). Because exogenous growth factors have had little success in enhancing chronic wound healing, we investigated whether hyperglycemia-induced AGEs interfere with cellular responses to extracellular signals. We used stromal cell-derived factor-1 (SDF-1), an angiogenic chemokine also known to promote stem cell recruitment in skin wounds...
December 1, 2016: Advances in Wound Care
https://www.readbyqxmd.com/read/28075616/role-of-cxc-chemokine-receptor-type-4-as-a-lactoferrin-receptor
#4
Yoshiharu Takayama, Reiji Aoki, Ryo Uchida, Atsushi Tajima, Ayako Aoki-Yoshida
Lactoferrin exerts its biological activities by interacting with receptors on target cells, including LDL receptor-related protein-1 (LRP-1/CD91), intelectin-1 (omentin-1), and Toll-like receptor 4 (TLR4). However, the effects mediated by these receptors are not sufficient to fully explain the many functions of lactoferrin. C-X-C-motif cytokine receptor 4 (CXCR4) is a ubiquitously expressed G-protein coupled receptor for stromal cell-derived factor-1 (SDF-1/CXCL12). Lactoferrin was found to be as capable as SDF-1 in blocking infection by an HIV variant that uses CXCR4 as a co-receptor (X4-tropic HIV), suggesting that lactoferrin interacts with CXCR4...
October 31, 2016: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/28074045/high-expression-of-stromal-cell-derived-factor-1-sdf-1-and-nf-%C3%AE%C2%BAb-predicts-poor-prognosis-in-cervical-cancer
#5
Zhiwang Song, Xia Zhang, Xiaojuan Ye, Chan Feng, Guang Yang, Yonglin Lu, Yun Lin, Chunyan Dong
BACKGROUND SDF-1 and NF-κB are associated with the prognosis of a wide range of cancers, but their value in cervical cancer remains controversial. The aim of this study was to investigate the expression of SDF-1and NF-κB in cervical cancer and their significance in clinical prognosis. MATERIAL AND METHODS The expression of SDF-1and NF-κB in 105 formalin-fixed, paraffin-embedded cervical cancer tissues and the adjacent tissues was examined by immunohistochemistry (IHC). The results were semi-quantitatively scored and analyzed by chi-square test...
January 11, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28072855/sdf-1%C3%AE-cxcr4-signaling-in-lipid-rafts-induces-platelet-aggregation-via-pi3-kinase-dependent-akt-phosphorylation
#6
Hiroko Ohtsuka, Tomohiro Iguchi, Moyuru Hayashi, Mizuho Kaneda, Kazuko Iida, Motoyuki Shimonaka, Takahiko Hara, Morio Arai, Yuichi Koike, Naomasa Yamamoto, Kohji Kasahara
Stromal cell-derived factor-1α (SDF-1α)-induced platelet aggregation is mediated through its G protein-coupled receptor CXCR4 and phosphatidylinositol 3 kinase (PI3K). Here, we demonstrate that SDF-1α induces phosphorylation of Akt at Thr308 and Ser473 in human platelets. SDF-1α-induced platelet aggregation and Akt phosphorylation are inhibited by pretreatment with the CXCR4 antagonist AMD3100 or the PI3K inhibitor LY294002. SDF-1α also induces the phosphorylation of PDK1 at Ser241 (an upstream activator of Akt), GSK3β at Ser9 (a downstream substrate of Akt), and myosin light chain at Ser19 (a downstream element of the Akt signaling pathway)...
2017: PloS One
https://www.readbyqxmd.com/read/28067275/sdf-1-cxcr4-axis-induces-human-dental-pulp-stem-cell-migration-through-fak-pi3k-akt-and-gsk3%C3%AE-%C3%AE-catenin-pathways
#7
Mingwei Li, Xuefei Sun, Liang Ma, Lu Jin, Wenfei Zhang, Min Xiao, Qing Yu
SDF-1 (stromal cell derived factor-1) has been found to be widely expressed during dental pulp inflammation, while hDPSCs (human dental pulp stem cells) contribute to the repair of dental pulp. We showed that the migration of hDPSCs was induced by SDF-1 in a concentration-dependent manner and could be inhibited with siCXCR4 (C-X-C chemokine receptor type 4) and siCDC42 (cell division control protein 42), as well as drug inhibitors such as AMD3100 (antagonist of CXCR4), LY294002 (inhibitor of PI3K) and PF573228 (inhibitor of FAK)...
January 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28060837/beneficial-effects-of-reconstituted-high-density-lipoprotein-rhdl-on-circulating-cd34-cells-in-patients-after-an-acute-coronary-syndrome
#8
Catherine Gebhard, Eric Rhéaume, Colin Berry, Geneviève Brand, Anne-Elen Kernaleguen, Gabriel Théberge-Julien, Mohammad Afaque Alam, Candace Y W Lee, Laurianne Boileau, Malorie Chabot-Blanchet, Marie-Claude Guertin, Marc-André Lavoie, Jean Grégoire, Réda Ibrahim, Philippe L'Allier, Jean-Claude Tardif
BACKGROUND: High-density lipoproteins (HDL) favorably affect endothelial progenitor cells (EPC). Circulating progenitor cell level and function are impaired in patients with acute coronary syndrome (ACS). This study investigates the short-term effects of reconstituted HDL (rHDL) on circulating progenitor cells in patients with ACS. METHODS AND FINDINGS: The study population consisted of 33 patients with recent ACS: 20 patients from the ERASE trial (randomized to receive 4 weekly intravenous infusions of CSL-111 40 mg/kg or placebo) and 13 additional patients recruited as controls using the same enrolment criteria...
2017: PloS One
https://www.readbyqxmd.com/read/28056602/the-potential-of-stromal-cell-derived-factor-1-delivery-using-a-collagen-membrane-for-bone-regeneration
#9
Tadahiro Takayama, Jisen Dai, Keita Tachi, Ryutaro Shohara, Hironori Kasai, Kentaro Imamura, Seiichi Yamano
Stromal cell-derived factor-1 (SDF-1) is a cytokine that is important in stem and progenitor cell recruitment in tissue repair after injury. Regenerative procedures using collagen membranes (CMs) are presently well established in periodontal and implant dentistry. The objective of this study is to test the subsequent effects of the released SDF-1 from a CM on bone regeneration compared to platelet-derived growth factor (PDGF) in vitro and in vivo. For in vitro studies, cell proliferation, alkaline phosphatase activity, and osteoblastic differentiation marker genes were assessed after MC3T3-E1 mouse preosteoblasts were cultured with CMs containing factors...
January 1, 2017: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/28029610/impact-of-local-injection-of-brain-derived-neurotrophic-factor-expressing-mesenchymal-stromal-cells-mscs-combined-with-intravenous-msc-delivery-in-a-canine-model-of-chronic-spinal-cord-injury
#10
Seung Hoon Lee, Yongsun Kim, Daeun Rhew, Ahyoung Kim, Kwang Rae Jo, Yongseok Yoon, Kyeung Uk Choi, Taeseong Jung, Wan Hee Kim, Oh-Kyeong Kweon
BACKGROUND AIMS: The microenvironment of the chronically injured spinal cord does not allow for axonal regeneration due to glial scarring. To ameliorate this, several therapeutic strategies have been used. We investigated whether combined transplantation of chondroitinase ABC (chABC) and mesenchymal stromal cells (MSCs) genetically modified to secrete brain-derived neurotrophic factor (BDNF) with intravenous (IV) administration of MSCs can promote recovery of hindlimb function after chronic spinal cord injury (SCI)...
October 28, 2016: Cytotherapy
https://www.readbyqxmd.com/read/28019655/tumor-activated-liver-stromal-cells-regulate-myeloid-derived-suppressor-cells-accumulation-in-the-liver
#11
Henghui Zhang, Gaixia He, Yaxian Kong, Yanhui Chen, Beibei Wang, Xiuyun Sun, Bei Jia, Xingwang Xie, Xueyan Wang, Dongwei Chen, Lai Wei, Minghui Zhang, Hui Zeng, Hongsong Chen
Regulating mechanisms underlying hepatic myeloid-derived suppressor cells (MDSCs) accumulation remain to be described. Here, we provide evidence for the involvement of tumor-activated liver stromal cells in the process of hepatic MDSCs migration and accumulation. Our data showed elevated frequency of MDSCs in the liver of tumor-bearing mice. Moreover, tumor-activated liver stromal cells promote MDSCs migration into the liver site. Further investigation indicated higher levels of cytokines and chemokines expression in liver stromal cells after exposure to the tumor-conditioned supernatant...
December 26, 2016: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28017585/evaluation-of-the-stromal-vascular-fraction-of-adipose-tissue%C3%A2-as-the-basis-for-a-stem-cell-based-tissue-engineered-vascular-graft
#12
Jeffrey T Krawiec, Han-Tsung Liao, LaiYee Lily Kwan, Antonio D'Amore, Justin S Weinbaum, J Peter Rubin, William R Wagner, David A Vorp
OBJECTIVE: One of the rate-limiting barriers within the field of vascular tissue engineering is the lengthy fabrication time associated with expanding appropriate cell types in culture. One particularly attractive cell type for this purpose is the adipose-derived mesenchymal stem cell (AD-MSC), which is abundant and easily harvested from liposuction procedures. Even this cell type has its drawbacks, however, including the required culture period for expansion, which could pose risks of cellular transformation or contamination...
December 22, 2016: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28001450/sdf-1-cxcl12-and-cxcr4-gene-variants-and-elevated-serum-sdf-1-levels-are-associated-with-preeclampsia
#13
Savas Karakus, Binnur Bagci, Gokhan Bagci, Enver Sancakdar, Caglar Yildiz, Ozlem Akkar, Ali Cetin
OBJECTIVE: We aimed to compare the frequencies of stromal cell-derived factor-1 (SDF-1) 3'A and CXCR4 single-nucleotide polymorphisms (SNPs) and serum SDF-1 levels in patients with preeclampsia (PE). METHODS: In total, 89 women with PE and 89 control women were included in the study. Genotyping was done by polymerase chain reaction-restriction fragment length polymorphism method. Enzyme-linked immunosorbent assay method was used to measure serum SDF-1 level. RESULTS: For SDF-1 3'A SNP, the frequency of GA genotype, total number of GA and AA genotypes, and the A allele frequency was higher in PE patients than controls (p = 0...
December 21, 2016: Hypertension in Pregnancy
https://www.readbyqxmd.com/read/28000861/cxcr4-is-involved-in-cd133-induced-emt-in-non-small-cell-lung-cancer
#14
Zhenbo Tu, Songping Xie, Meng Xiong, Yinchu Liu, Xiangyong Yang, Kingsley Miyanda Tembo, Jie Huang, Weidong Hu, Xiaoxing Huang, Shan Pan, Pan Liu, Ehtisham Altaf, Ganjun Kang, Jie Xiong, Qiuping Zhang
Metastasis is the major cause of death in patients with non-small cell lung cancer (NSCLC), and epithelial-mesenchymal transition (EMT) has been observed to be one of the key regulators of metastasis in certain cancers as it confers an invasive phenotype. CD133 is a widely used cancer stem cell (CSC) marker, and CD133-positive cancer cells are thought to be tumor-initiating cells with CSC characteristics, while CXCR4, a stromal-derived-factor-1 specific chemokine receptor, is highly expressed in NSCLC tissues and participates in cancer progression by regulating cell anti-apoptosis...
December 19, 2016: International Journal of Oncology
https://www.readbyqxmd.com/read/27998864/-role-of-stromal-cell-derived-factor-1-and-cxc-chemokine-receptor-4-in-corneal-graft-rejection-in-rats
#15
Xiao-Song Wu, Jing Wu, Ming Ma, Xiao-Li Lu, Jian Yu, Zhen-Yu Zhang
OBJECTIVE: To examine expression of stromal cell-derived factor-1 (SDF-1) and CXC chemokine receptor 4 (CXCR4) in rat cornea tissue and their role in corneal allograft rejection. METHODS: With 15 Wistar rats as the normal control group, 22 Wistar rats received autologous corneal graft transplantation, and 44 Wistar rats received transplantation of corneal graft from SD rats with penetrating keratoplasty. From the rats with allograft transplantation, 22 were selected randomly for treatment with TobraDex eye drops for 30 days after the operation (twice a day), and the remaining 22 rats were treated with normal saline only...
December 20, 2016: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/27997860/vegf-gene-therapy-cooperatively-recruits-molecules-from-the-immune-system-and-stimulates-cell-homing-and-angiogenesis-in-refractory-angina
#16
Bruna Eibel, Melissa M Markoski, Clarissa G Rodrigues, Thiago Dipp, Felipe B de Salles, Imarilde I Giusti, Nance B Nardi, Rodrigo D M Plentz, Renato A K Kalil
BACKGROUND: New vessels are formed in response to stimuli from angiogenic factors, a process in which paracrine signaling is fundamental. OBJECTIVE: To investigate the cooperative paracrine signaling profile in response to Vascular Endothelial Growth Factor (VEGF) gene therapy in patients with coronary artery disease (CAD) and refractory angina. METHOD: A cohort study was conducted in which plasma was collected from patients who underwent gene therapy with a plasmid expressing VEGF 165 (10) and from surgical procedure controls (4)...
December 17, 2016: Cytokine
https://www.readbyqxmd.com/read/27996037/estrogen-induced-sdf-1%C3%AE-production-promotes-the-progression-of-er-negative-breast-cancer-via-the-accumulation-of-mdscs-in-the-tumor-microenvironment
#17
Liquan Ouyang, Weilong Chang, Bin Fang, Jieting Qin, Xincai Qu, Fanjun Cheng
Estrogen plays a role in the processes of tumorigenesis, metastasis, and drug resistance in estrogen receptor (ER)-positive breast cancer (BC). Whether estrogen contributes to ER-negative BC is unclear. Here, we aimed to investigate whether estrogen could stimulate the secretion of stromal-derived factor-1 (SDF-1α) by cancer-associated fibroblasts (CAFs) to promote the progression of ER-negative BC. We transplanted ER-negative BC cells into ovariectomized mice, which was followed by continuous injection of estrogen, and found that estrogen promoted the tumorigenesis of BC...
December 20, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27989872/chondrogenic-progenitor-cells-promote-vascular-endothelial-growth-factor-expression-through-stromal-derived-factor-1
#18
Shuya Wang, Cheng Zhou, Hongjun Zheng, Zhiyi Zhang, YiFang Mei, James A Martin
OBJECTIVE: Vascular endothelial growth factor (VEGF) is elevated in joint fluids from patients diagnosed with osteoarthritis (OA). VEGF is known to contribute to vascular tidemark invasion and osteophyte formation, which are classic features of advanced OA. Among the factors that may drive VEGF accumulation in diseased joints, stromal cell-derived factor-1α (SDF-1α) is a likely culprit, as it is enriched in synovial fluids from osteoarthritic joints and is a potent inducer of VEGF expression...
October 27, 2016: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/27982773/effect-of-combined-vegf165-sdf-1-gene-therapy-on-vascular-remodeling-and-blood-perfusion-in-cerebral-ischemia
#19
Guo-Jie Hu, Yu-Gong Feng, Wen-Peng Lu, Huan-Ting Li, Hong-Wei Xie, Shi-Fang Li
OBJECTIVE Therapeutic neovascularization is a promising strategy for treating patients after an ischemic stroke; however, single-factor therapy has limitations. Stromal cell-derived factor 1 (SDF-1) and vascular endothelial growth factor (VEGF) proteins synergistically promote angiogenesis. In this study, the authors assessed the effect of combined gene therapy with VEGF165 and SDF-1 in a rat model of cerebral infarction. METHODS An adenoviral vector expressing VEGF165 and SDF-1 connected via an internal ribosome entry site was constructed (Ad-VEGF165-SDF-1)...
December 16, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27980109/folate-hapten-mediated-immunotherapy-synergizes-with-vascular-endothelial-growth-factor-receptor-inhibitors-in-treating-murine-models-of-cancer
#20
N Achini Bandara, Cody D Bates, Yingjuan Lu, Emily K Hoylman, Philip S Low
The over-expression of folate receptors (FR) on many human cancers has led to the development of folate-linked drugs for the imaging and therapy of FR-expressing cancers. In a recent phase 1 clinical trial of late stage renal cell carcinoma patients, folate was exploited to deliver an immunogenic hapten, fluorescein, to FR+ tumor cells in an effort to render the cancer cells more immunogenic. Although >50% of the patients showed prolonged stable disease, all patients eventually progressed, suggesting that the folate-hapten immunotherapy was insufficient by itself to treat the cancer...
December 15, 2016: Molecular Cancer Therapeutics
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