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Stromal cell derived factor 1

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https://www.readbyqxmd.com/read/29776406/the-effect-of-dpp-4-inhibition-to-improve-functional-outcome-after-stroke-is-mediated-by-the-sdf-1%C3%AE-cxcr4-pathway
#1
Fausto Chiazza, Harald Tammen, Hiranya Pintana, Grazyna Lietzau, Massimo Collino, Thomas Nyström, Thomas Klein, Vladimer Darsalia, Cesare Patrone
BACKGROUND: Dipeptidyl peptidase-4 (DPP-4) inhibitors (gliptins) are approved drugs for the treatment of hyperglycemia in patients with type 2 diabetes. These effects are mainly mediated by inhibiting endogenous glucagon-like peptide-1 (GLP-1) cleavage. Interestingly, gliptins can also improve stroke outcome in rodents independently from GLP1. However, the underlying mechanisms are unknown. Stromal cell-derived factor-1α (SDF-1α) is a DPP-4 substrate and CXCR4 agonist promoting beneficial effects in injured brains...
May 19, 2018: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/29775636/epithelial-proliferation-in-inflammatory-skin-disease-is-regulated-by-ttc7-in-fibroblasts-and-lymphocytes
#2
Ursina Nüesch, Andrea A Mauracher, Lennart Opitz, Benjamin Volkmer, Katarzyna Michalak-Mićka, Jivko Kamarachev, Tom Hartwig, Ernst Reichmann, Burkhard Becher, Stefano Vavassori, Jana Pachlopnik Schmid
BACKGROUND: Mutations in tetratricopeptide repeat domain 7A (TTC7A) and its mouse orthologue Ttc7 result in a multisystemic disease, mostly affecting epithelial barriers and the immune system. Despite successful hematopoietic stem cell transplantation, ongoing progression of gastrointestinal manifestations can be life-threatening in TTC7A-deficient patients. OBJECTIVE: To identify whether TTC7A mutations dysregulate epithelial cells only, or whether a cell-intrinsic defect in lymphocytes or other cells contributes to disease manifestations...
May 15, 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29771429/the-relationship-between-number-and-function-of-epcs-and-concentration-of-vegf165-and-sdf-1-in-coronary-artery-spasm
#3
Z-Q Sheng, Y-F Li, K-L Zheng, H-H Lu, J Xie, H Wu, B Xu
OBJECTIVE: We aimed at investigating the functions of endothelial progenitor cells (EPCs) in the pathophysiology of coronary artery spasm (CAS) and coronary artery disease (CAD), as well as to evaluate the correlation of these diseases with the number and function of EPCs, the plasma concentration of vascular endothelial growth factor 165 (VEGF165) and stromal cell-derived factor 1 (SDF-1). PATIENTS AND METHODS: Participants were recruited into three groups, CAS, CAD and the control...
May 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29768259/precise-intradermal-injection-of-nanofat-derived-stromal-cells-combined-with-platelet-rich-fibrin-improves-the-efficacy-of-facial-skin-rejuvenation
#4
Zhi-Jie Liang, Xiang Lu, De-Quan Li, Yi-Dan Liang, Dan-Dan Zhu, Fang-Xiao Wu, Xiao-Lin Yi, Ning He, Yan-Qing Huang, Chao Tang, Hong-Mian Li
BACKGROUND/AIMS: The rejuvenation properties of nanofat grafting have been described in recent years. However, it is not clear whether the clinical efficacy of the procedure is attributable to stem cells or linked to other components of adipose tissue. In this study we isolated nanofat-derived stem cells (NFSCs) to observe their biological characteristics and evaluate the efficacy of precise intradermal injection of nanofat combined with platelet-rich fibrin (PRF) in patients undergoing facial rejuvenation treatment...
May 11, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29766931/-in-vitro-differentiation-of-neural-cells-from-human-adipose-tissue-derived-stromal-cells
#5
Shruti D Dave, Chetan N Patel, Aruna V Vanikar, Hargovind L Trivedi
Background: Stem cells, including neural stem cells (NSCs), are endowed with self-renewal capability and hence hold great opportunity for the institution of replacement/protective therapy. We propose a method for in vitro generation of stromal cells from human adipose tissue and their differentiation into neural cells. Materials and Methods: Ten grams of donor adipose tissue was surgically resected from the abdominal wall of the human donor after the participants' informed consents...
May 2018: Neurology India
https://www.readbyqxmd.com/read/29758548/stromal-cell-derived-factor-sdf-1-alpha-overexpression-promotes-bone-regeneration-by-osteogenesis-and-angiogenesis-in-osteonecrosis-of-the-femoral-head
#6
Fan Yang, Feng Xue, Junjie Guan, Zeng Zhang, Jimin Yin, Qingling Kang
BACKGROUND/AIMS: Osteonecrosis of the femoral head (ONFH) is a devastating orthopedic disease. Previous studies suggested that stromal-cell-derived factor (SDF)-1 was involved in osteogenesis and angiogenesis. However, whether SDF-1 potentiates the angiogenesis and osteogenesis of bone marrow-derived stromal stem cells (BMSCs) in ONFH is not clear. METHODS: BMSCs were transfected with green fluorescent protein (GFP) or the fusion gene encoding GFP and SDF-1α, and transgenic efficacy was monitored by immunofluorescence...
May 7, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29756519/adipose-derived-stem-cells-stimulated-with-n-butylidenephthalide-exhibit-therapeutic-effects-in-a-mouse-model-of-parkinson-s-disease
#7
Kang Chi, Ru-Huei Fu, Yu-Chuen Huang, Shih-Yin Chen, Ching-Ju Hsu, Shinn-Zong Lin, Chi-Tang Tu, Li-Hsun Chang, Ping-An Wu, Shih-Ping Liu
Parkinson's disease (PD) causes motor dysfunction and dopaminergic cell death. Drug treatments can effectively reduce symptoms but often cause unwanted side effects. Stem cell therapies using cell replacement or indirect beneficial secretomes have recently emerged as potential therapeutic strategies. Although various types of stem cells have been proposed as possible candidates, adipose-derived stem cells (ADSCs) are easily obtainable, more abundant, less ethically disputed, and able to differentiate into multiple cell lineages...
January 1, 2018: Cell Transplantation
https://www.readbyqxmd.com/read/29752864/%C3%AE-blockers-interfere-with-cell-homing-receptors-and-regulatory-proteins-in-a-model-of-spontaneously-hypertensive-rats
#8
Bruna Eibel, Melissa Kristochek, Thiago R Peres, Lucinara D Dias, Daniela R Dartora, Karina R Casali, Renato A K Kalil, Alexandre M Lehnen, Maria Claudia Irigoyen, Melissa M Markoski
AIM: To examine the interference of β-blockers with the chemokine stromal cell-derived factor-1 (SDF-1) found in cell homing receptors, C-X-C chemokine receptor type 4 (CXCR-4) and CXCR-7 and regulatory proteins of homing pathways, we administered atenolol, carvedilol, metoprolol and propranolol for 30 days using an orogastric tube to hypertensive rats. METHOD: We collected blood samples before and after treatment and quantified the levels of SDF-1 with enzyme linked immunosorbent assay (ELISA)...
May 12, 2018: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/29752108/surface-decorated-hydroxyapatite-scaffold-with-on-demand-delivery-of-dexamethasone-and-stromal-cell-derived-factor-1-for-enhanced-osteogenesis
#9
Bingjun Zhang, Hongyu Li, Lei He, Zhiwei Han, Teng Zhou, Wei Zhi, Xiaobo Lu, Xiong Lu, Jie Weng
In the process of bone regeneration, relatively early biological events including inflammatory response, angiogenesis, or stem cell homing, help the accompanying target actions of cell differentiation and calcification. Herein, we proposed a novel cell-guided tissue engineering system based on a surface-functionalized porous hydroxyapatite (HA) scaffolds with the ability to recruit cells and accelerate the differentiation of them along the osteoblastic lineage for optimizing large-sized bone defect repair. Inspired by microstructural properties of natural bone, HA scaffolds similar to the trabecular bone structure were prepared via a sugar sphere leaching technique, in which the inter-pore opening size was controllable...
August 1, 2018: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/29751831/intravenous-injection-of-allogeneic-umbilical-cord-derived-multipotent-mesenchymal-stromal-cells-reduces-the-infarct-area-and-ameliorates-cardiac-function-in-a-porcine-model-of-acute-myocardial-infarction
#10
Meikuang Lim, Weiqiang Wang, Lu Liang, Zhi-Bo Han, Zongjin Li, Jie Geng, Meng Zhao, Honghong Jia, Jie Feng, Zhe Wei, Baoquan Song, Jiemin Zhang, Jun Li, Tianwen Liu, Fan Wang, Ting Li, Jianming Li, Yihu Fang, Jianhua Gao, Zhongchao Han
BACKGROUND: Multipotent mesenchymal stromal cell (MSC) therapy has been widely recognized as a feasible strategy for regenerating injured myocardial tissue. However, little is known about the efficacy of intravenous injection of allogeneic umbilical cord (UC) MSCs in preclinical models of porcine myocardial infarction. METHODS: Different dosages of allogeneic UC-MSCs or the vehicle [phosphate-buffered saline (PBS)] were delivered intravenously into an acute myocardial infarction (AMI) porcine model twice after coronary ligation...
May 11, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29751821/improved-gmp-compliant-approach-to-manipulate-lipoaspirates-to-cryopreserve-stromal-vascular-fraction-and-to-expand-adipose-stem-cells-in-xeno-free-media
#11
Francesco Agostini, Francesca Maria Rossi, Donatella Aldinucci, Monica Battiston, Elisabetta Lombardi, Stefania Zanolin, Samuele Massarut, Pier Camillo Parodi, Alessandro Da Ponte, Giovanni Tessitori, Barbara Pivetta, Cristina Durante, Mario Mazzucato
BACKGROUND: The stromal vascular fraction (SVF) derived from adipose tissue contains adipose-derived stromal/stem cells (ASC) and can be used for regenerative applications. Thus, a validated protocol for SVF isolation, freezing, and thawing is required to manage product administration. To comply with Good Manufacturing Practice (GMP), fetal bovine serum (FBS), used to expand ASC in vitro, could be replaced by growth factors from platelet concentrates. METHODS: Throughout each protocol, GMP-compliant reagents and devices were used...
May 11, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29749473/effect-of-a-novel-orally-bioavailable-cxcr4-inhibitor-amd070-on-the-metastasis-of-oral-cancer-cells
#12
Daisuke Uchida, Nobuyuki Kuribayashi, Makoto Kinouchi, Yuta Sawatani, Michiko Shimura, Toshimitsu Mori, Tomonori Hasegawa, Youji Miyamoto, Hitoshi Kawamata
We have previously demonstrated that the stromal cell‑derived factor (SDF‑1)/CXCR4 system is involved in the metastasis of head and neck cancer. Additionally, it has been revealed that the blockade of CXCR4 by subcutaneous daily injection with AMD3100, a CXCR4 antagonist, may be effective in preventing metastasis in CXCR4‑related head and neck cancer. Recent investigations have suggested that AMD070, a novel orally bioavailable inhibitor of CXCR4, may be minimally invasive compared with AMD3100. In the present study, we examined the effect of AMD070 on metastasis induced by the SDF‑1/CXCR4 axis in B88‑SDF‑1 oral cancer cells, which express high levels of SDF‑1 and CXCR4...
April 25, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29745446/effects-of-vegf-ang-1-pla-nano-sustained-release-microspheres-on-proliferation-and-differentiation-of-adscs
#13
Yucang He, Zihao Li, Zhuojie Chen, Xiaofang Yu, Ziwan Ji, Jingping Wang, Yao Qian, Liqun Li
The improvement of fat graft viability might depend on the presence of multipotent resident adipose derived stem cells (ADSCs) which is the important component of stromal vascular fraction (SVF). Vascular endothelial growth factor (VEGF) and angiogenin-1 (Ang-1) are responsible for neovascularization. However, their half-life is too short to produce a biological effect. We thus investigated whether VEGF-ANG-1-polylactic acid (PLA) microspheres could enhance the angiogenic properties of ADSCs. PLA microspheres containing VEGF and ANG-1 were prepared by in vitro ultrasonic emulsification and characterized according to their encapsulation efficiency (EE), drug-loading rate (DL), particle size and drug release...
May 10, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29740779/forced-expression-of-cd200-improves-the-differentiation-capability-and-immunoregulatory-functions-of-mesenchymal-stromal-cells
#14
Hye Joung Kim, Kyoung-Woon Kim, Yong-Rim Kwon, Bo-Mi Kim, Yoo-Jin Kim
OBJECTIVE: In order to identify specific mesenchymal stromal cell (MSC) populations with enhanced therapeutic efficacy, we evaluated the functional changes associated with the stable expression of CD200, which is associated with immune regulatory function and osteogenic differentiation, in human bone marrow-derived MSCs (CD200/MSCs). RESULTS: We detected significantly greater osteogenesis and chondrogenesis in CD200/MSCs than in mock-transfected MSCs. In addition, the immune regulatory function of MSCs in mixed lymphocyte reactions was enhanced by CD200 gene transfection...
May 9, 2018: Biotechnology Letters
https://www.readbyqxmd.com/read/29740450/a-novel-three-dimensional-immune-oncology-model-for-high-throughput-testing-of-tumoricidal-activity
#15
Hilary Sherman, Hannah J Gitschier, Ann E Rossi
The latest advancements in oncology research are focused on autologous immune cell therapy. However, the effectiveness of this type of immunotherapy for cancer remediation is not equivalent for all patients or cancer types. This suggests the need for better preclinical screening models that more closely recapitulate in vivo tumor biology. The established method for investigating tumoricidal activity of immunotherapies has been study of two-dimensional (2D) monolayer cultures of immortalized cancer cell lines or primary tumor cells in standard tissue culture vessels...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29739049/expression-patterns-of-cxcl12-and-its-receptor-in-colorectal-carcinoma
#16
Ashraf Mousavi, Shahryar Hashemzadeh, Tayyeb Bahrami, Mehrdad Asghari Estiar, Mohammad A H Feizi, Nasser Pouladi, Leila Rostamizadeh, Ebrahim Sakhinia
BACKGROUND: Stromal cell-derived factor-1 (also called CXCL12) and its receptor, CXCR4, have a key role in the pathogenesis and tumorigenesis of various cancers. The aims of the current study were to quantitatively examine the expression of CXCR4 and CXCL12 genes in colorectal cancer and to correlate their expression degree with clinicopathological features. METHODS: Tumor tissue samples were collected from 47 patients with CRC. Total RNA was isolated from resection tissues and real-time PCR analysis was performed to examine mRNA levels of CXCL12 and CXCR4 genes...
May 1, 2018: Clinical Laboratory
https://www.readbyqxmd.com/read/29737898/exposure-to-low-dose-bisphenol-a-during-the-juvenile-period-of-development-disrupts-the-immune-system-and-aggravates-allergic-airway-inflammation-in-mice
#17
Eiko Koike, Rie Yanagisawa, Tin-Tin Win-Shwe, Hirohisa Takano
Bisphenol A (BPA) is used in the production of polycarbonate plastics and epoxy resins and found in many consumer products. Previous studies have reported that perinatal exposure to BPA through the oral route promotes the development of allergic airway inflammation. We investigated the effects of exposure to low-dose BPA during the juvenile period of development on allergic airway inflammation. Six-week-old male C3H/HeJ mice were intratracheally administered ovalbumin (OVA, 1 μg) every 2 weeks and/or BPA (0, 0...
January 2018: International Journal of Immunopathology and Pharmacology
https://www.readbyqxmd.com/read/29735591/the-alchemist-s-nightmare-might-mesenchymal-stem-cells-that-are-recruited-to-repair-the-injured-heart-be-transformed-into-fibroblasts-rather-than-cardiomyocytes
#18
REVIEW
Milton Packer
The injection of mesenchymal stem cells into the injured myocardium to induce cardiac regeneration has yielded disappointing results, conceivably because cells with cardioreparative potential must be supplied for long periods of time to produce a salutary effect. Accordingly, investigators have devised ways of directing such cells to the heart on an ongoing basis: by enhancing the action of endogenous peptides that function as cardiac homing signals (eg, stromal cell-derived factor-1). Stromal cell-derived factor-1 is released during acute cardiac injury and heart failure, but it has a short half-life because of degradation by dipeptidyl peptidase-4...
May 8, 2018: Circulation
https://www.readbyqxmd.com/read/29734748/enhanced-homing-technique-of-mesenchymal-stem-cells-using-iron-oxide-nanoparticles-by-magnetic-attraction-in-olfactory-injured-mouse-models
#19
Wan Su Yun, Jin Sil Choi, Hyun Mi Ju, Min Hee Kim, Seong Jin Choi, Eun Seol Oh, Young Joon Seo, Jaehong Key
Intranasal delivery of mesenchymal stem cells (MSCs) to the olfactory bulb is a promising approach for treating olfactory injury. Additionally, using the homing phenomenon of MSCs may be clinically applicable for developing therapeutic cell carriers. Herein, using superparamagnetic iron oxide nanoparticles (SPIONs) and a permanent magnet, we demonstrated an enhanced homing effect in an olfactory model. Superparamagnetic iron oxide nanoparticles with rhodamine B (IRBs) had a diameter of 5.22 ± 0.9 nm and ζ-potential of +15...
May 5, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29720269/acidic-preconditioning-of-endothelial-colony-forming-cells-ecfc-promote-vasculogenesis-under-proinflammatory-and-high-glucose-conditions-in-vitro-and-in-vivo
#20
Hebe Agustina Mena, Paula Romina Zubiry, Blandine Dizier, Mirta Schattner, Catherine Boisson-Vidal, Soledad Negrotto
BACKGROUND: We have previously demonstrated that acidic preconditioning of human endothelial colony-forming cells (ECFC) increased proliferation, migration, and tubulogenesis in vitro, and increased their regenerative potential in a murine model of hind limb ischemia without baseline disease. We now analyze whether this strategy is also effective under adverse conditions for vasculogenesis, such as the presence of ischemia-related toxic molecules or diabetes, one of the main target diseases for cell therapy due to their well-known healing impairments...
May 2, 2018: Stem Cell Research & Therapy
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