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https://www.readbyqxmd.com/read/29450941/hematogenous-dissemination-of-mesenchymal-stem-cells-from-endometriosis
#1
Fei Li, Myles H Alderman, Aya Tal, Ramanaiah Mamillapalli, Alexis Coolidge, Demetra Hufnagel, Zhihao Wang, Elham Neisani, Stephanie Gidicsin, Graciela Krikun, Hugh S Taylor
Endometriosis is ectopic growth of endometrial tissue traditionally thought to arise through retrograde menstruation. We aimed to determine if cells derived from endometriosis could enter vascular circulation and lead to hematogenous dissemination. Experimental endometriosis was established by transplanting endometrial tissue from DsRed+ mice into the peritoneal cavity of DsRed- mice. Using flow cytometry, we identified DsRed+ cells in blood of animals with endometriosis. The circulating donor cells expressed CXCR4 and mesenchymal stem cell (MSC) biomarkers, but not hematopoietic stem cell markers...
February 16, 2018: Stem Cells
https://www.readbyqxmd.com/read/29448202/the-correlation-between-serum-chemokines-and-clinical-outcome-in-patients-with-advanced-biliary-tract-cancer
#2
Su Jin Lee, Jung Eun Kim, Seung Tae Kim, Jeeyun Lee, Se Hoon Park, Joon Oh Park, Won Ki Kang, Young Suk Park, Ho Yeong Lim
BACKGROUND: Biliary tract cancers (BTCs) are known to have a dismal prognosis. A number of chemokines play important roles in the progress of BTCs. However, the serum levels of chemokines in BTCs have not yet been explored. METHODS: The sera of healthy donors (n = 8) and patients with BTCs who were enrolled in second line sunitinib trials (n = 27) were collected. The concentrations of three kinds of chemokines (CXCL5, CXCL8 and CXCL12) were measured using ELISA assay...
February 12, 2018: Translational Oncology
https://www.readbyqxmd.com/read/29445379/contribution-of-regulatory-t-cells-in-nucleotide-binding-oligomerization-domain-2-response-to-influenza-virus-infection
#3
Benoit Egarnes, Jean Gosselin
Influenza A virus (IAV) is recognized to cause severe pulmonary illnesses in humans, particularly in elderly and children. One of the features associated with IAV infection is an excessive lung inflammation due to an uncontrolled immune response. The nucleotide-binding oligomerization domain 2 (NOD2) receptor is known to recognize ssRNA viruses such as IAV, but its role in the inflammatory process during viral infections remains to be clarified. In a previous report, we have shown that activation of NOD2 with muramyl dipeptide (MDP) significantly reduces both viral loads and lung inflammation and also improves pulmonary function during IAV infection...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29443542/comprehensive-analysis-of-dna-methylation-and-gene-expression-datasets-identified-mmp9-and-twist1-as-important-pathogenic-genes-of-lung-adenocarcinoma
#4
Wen Tian, Yong-Sheng Li, Jing-Hua Zhang, Ji-Jun Li, Jing-Hua Gao
Due to the high mortality of lung cancer, early diagnosis followed by early effective treatment is the key to prognosis improvement, which demands to identify the biological targets. Therefore, a multistage screening analysis was used to identify biological targets of lung adenocarcinoma. Two independent datasets of DNA methylation and RNA expression microarray in lung adenocarcinoma and normal lung tissues were chosen from the Gene Expression Omnibus. The association between DNA methylation and gene expression was explored, and the prognostic value of the hub genes was also evaluated...
February 14, 2018: DNA and Cell Biology
https://www.readbyqxmd.com/read/29437871/gut-microbiota-modulate-t-cell-trafficking-into-human-colorectal-cancer
#5
Eleonora Cremonesi, Valeria Governa, Jesus Francisco Glaus Garzon, Valentina Mele, Francesca Amicarella, Manuele Giuseppe Muraro, Emanuele Trella, Virginie Galati-Fournier, Daniel Oertli, Silvio Raffael Däster, Raoul A Droeser, Benjamin Weixler, Martin Bolli, Raffaele Rosso, Ulrich Nitsche, Nina Khanna, Adrian Egli, Simone Keck, Julia Slotta-Huspenina, Luigi M Terracciano, Paul Zajac, Giulio Cesare Spagnoli, Serenella Eppenberger-Castori, Klaus-Peter Janssen, Lubor Borsig, Giandomenica Iezzi
OBJECTIVE: Tumour-infiltrating lymphocytes (TILs) favour survival in human colorectal cancer (CRC). Chemotactic factors underlying their recruitment remain undefined. We investigated chemokines attracting T cells into human CRCs, their cellular sources and microenvironmental triggers. DESIGN: Expression of genes encoding immune cell markers, chemokines and bacterial 16S ribosomal RNA (16SrRNA) was assessed by quantitative reverse transcription-PCR in fresh CRC samples and corresponding tumour-free tissues...
February 6, 2018: Gut
https://www.readbyqxmd.com/read/29436696/cxcr4-receptor-blockage-reduces-the-contribution-of-tumor-and-stromal-cells-to-the-metastatic-growth-in-the-liver
#6
Aitor Benedicto, Irene Romayor, Beatriz Arteta
The liver is a common site for the metastatic spread of primary malignancies including colorectal cancer, and liver metastasis is a main cause of death in cancer patients. This is due to the complexity of the interactions taking place in the liver between tumor and stromal cells. In fact, cancer‑associated fibroblasts (CAFs) have been shown to support tumor growth through the CXCL12/CXCR4 axis. However, along with cancer cells, myeloid‑derived suppressor cells (MDSCs), immature dendritic cells with immunosuppressive potential, also express CXCR4...
February 8, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29434965/expression-of-cxc-motif-chemokine-12-and-the-receptor-c-x-c-receptor-4-in-glioma-and-theeffect-on-peritumoral-brain-edema
#7
Wenlong Tang, Yupeng Chen, Xingfu Wang, Yao Chen, Jiandong Zhang, Zhixiong Lin
The present study aimed to evaluate the association between CXC-motif-chemokine 12 (CXCL12)/C-X-C receptor 4 (CXCR4) expression and peritumoral brain edema (PTBE) in glioma patients. Immunohistochemical techniques were used to detect the expression of CXCR4 and CXCL12 in 58 glioma tissues. Magnetic resonance imaging was used to evaluate the extent and type of brain edema in preoperative glioma patients. The association between edema and CXCL12/CXCR4 expression was examined by χ2 analysis. The prognostic significance of CXCL12 or CXCR4 was determined by log-rank tests and Cox's proportional hazards model...
February 2018: Oncology Letters
https://www.readbyqxmd.com/read/29434873/mechanisms-by-which-cxcr4-cxcl12-cause-metastatic-behavior-in-pancreatic-cancer
#8
Jianbo Zhang, Chengxin Liu, Xinkai Mo, Huan Shi, Sheng Li
C-X-C motif chemokine receptor (CXCR) 4/CXCL12 is associated with tumor invasion and metastasis in pancreatic cancer. The present study aimed to investigate the possible mechanisms behind this process by studying the association between the expression of CXCR4 and numerous molecular markers. A total of 60 patients with pancreatic cancer who had been treated with radical surgery between July 2012 and February 2016 were included in the present study. The expression of CXCR4/CXCL12 in primary pancreatic cancer lesions, tissues adjacent to cancerous tissue, non-cancerous pancreatic tissues and in the surrounding lymph nodes was evaluated by immunohistochemistry...
February 2018: Oncology Letters
https://www.readbyqxmd.com/read/29434715/relationship-between-osteoporosis-and-expression-of-bcl-2-and-cxcl12
#9
Tongtao Pang, Mingzhi Gong, Jiangtao Han, Dan Liu
The changes of expression of anti-apoptotic factor B-cell lymphoma 2 (Bcl-2) and chemokine C-X-C motif ligand 12 (CXCL12) in the pathological process of osteoporosis (OP) were investigated, to provide new ideas for the diagnosis and treatment of OP. A total of 60 postmenopausal women who needed to undergo hip replacement surgery were enrolled and divided into osteoporosis group (OP, n=32) and control group (CK, n=28) according to the results of dual-energy X-ray bone density measure; after operation, cancellousbone from the femoral head or femoral neck was removed, and osteoblasts and osteoclasts were isolated and cultured in vitro...
February 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29432190/accelerated-wound-healing-in-mice-by-on-site-production-and-delivery-of-cxcl12-by-transformed-lactic-acid-bacteria
#10
Evelina Vågesjö, Emelie Öhnstedt, Anneleen Mortier, Hava Lofton, Fredrik Huss, Paul Proost, Stefan Roos, Mia Phillipson
Impaired wound closure is a growing medical problem associated with metabolic diseases and aging. Immune cells play important roles in wound healing by following instructions from the microenvironment. Here, we developed a technology to bioengineer the wound microenvironment and enhance healing abilities of the immune cells. This resulted in strongly accelerated wound healing and was achieved by transforming Lactobacilli with a plasmid encoding CXCL12. CXCL12-delivering bacteria administrated topically to wounds in mice efficiently enhanced wound closure by increasing proliferation of dermal cells and macrophages, and led to increased TGF-β expression in macrophages...
February 5, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29427452/cxcr4-cxcl12-interaction-is-important-for-plasma-cell-homing-and-survival-in-nzb-w-mice
#11
Qingyu Cheng, Laleh Khodadadi, Adriano Taddeo, Jens Klotsche, Bimba F Hoyer, Andreas Radbruch, Falk Hiepe
Antibody-secreting cells (ASCs), including short-lived plasmablasts and long-lived memory plasma cells (LLPCs), contribute to autoimmune pathology. ASCs, particularly LLPCs, refractory to conventional immunosuppressive drugs pose a major therapeutic challenge. Since stromal cells expressing C-X-C motif chemokine-12 (CXCL12) organize survival niches for LLPCs in the bone marrow, we investigated the effects of CXCL12 and its ligand CXCR4 on ASCs in lupus mice (NZB/W). Fewer adoptively transferred splenic ASCs were retrieved from the bone marrow of recipient immunodeficient Rag1-/- mice when the ASCs were pre-treated with the CXCR4 blocker AMD3100...
February 10, 2018: European Journal of Immunology
https://www.readbyqxmd.com/read/29426850/asymmetrical-ligand-induced-cross-regulation-of-chemokine-c-x-c-motif-receptor-4-by-%C3%AE-1-adrenergic-receptors-at-the-heteromeric-receptor-complex
#12
Xianlong Gao, Lauren J Albee, Brian F Volkman, Vadim Gaponenko, Matthias Majetschak
Recently, we reported that chemokine (C-X-C motif) receptor (CXCR)4 and atypical chemokine receptor 3 regulate α1-adrenergic receptors (α1-AR) through the formation of hetero-oligomeric complexes. Whether α1-ARs also regulate chemokine receptor function within such heteromeric receptor complexes is unknown. We observed that activation of α1b-AR within the α1b-AR:CXCR4 heteromeric complex leads to cross-recruitment of β-arrestin2 to CXCR4, which could not be inhibited with AMD3100. Activation of CXCR4 did not cross-recruit β-arrestin2 to α1b-AR...
February 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29420253/the-c-x-c-signalling-system-in-the-rodent-vs-primate-testis-impact-on-germ-cell-niche-interaction
#13
Laura Heckmann, Tim Pock, Ina Tröndle, Nina Neuhaus
In zebrafish, action of the chemokine Cxcl12 is mediated through its G-protein coupled seven-transmembrane domain receptor Cxcr4 and the atypical receptor Cxcr7. Employing this animal model it was revealed that this Cxcl12 signalling system plays a crucial role for directed migration of primordial germ cells (PGC) during early testicular development. Importantly, subsequent studies indicated that this regulatory mechanism is evolutionarily conserved also in mice. What is more, the functional role of the CXCL12 system does not seem to be limited to early phases of testicular development...
February 2, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29417588/targeting-the-cxcl12-cxcr4-pathway-and-myeloid-cells-to-improve-radiation-treatment-of-locally-advanced-cervical-cancer
#14
REVIEW
Magali Lecavalier-Barsoum, Naz Chaudary, Kathy Han, Marianne Koritzinsky, Richard Hill, Michael Milosevic
Cervical cancer is the fourth most commonly diagnosed cancer and the fourth leading cause of cancer death in women worldwide. Approximately half of cervical cancer patients present with locally advanced disease, for which surgery is not an option. These cases are nonetheless potentially curable with radiotherapy and cisplatin chemotherapy. Unfortunately, some tumours are resistant to treatment, and lymph node and distant recurrences are major problems in patients with advanced disease at diagnosis. New targeted treatments that can overcome treatment resistance and reduce metastases are urgently needed...
February 8, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29416611/three-dimensional-tumor-model-mimics-stromal-breast-cancer-cells-signaling
#15
Stephanie Lemmo Ham, Pradip Shahi Thakuri, Madison Plaster, Jun Li, Kathryn E Luker, Gary D Luker, Hossein Tavana
Tumor stroma is a major contributor to the biological aggressiveness of cancer cells. Cancer cells induce activation of normal fibroblasts to carcinoma-associated fibroblasts (CAFs), which promote survival, proliferation, metastasis, and drug resistance of cancer cells. A better understanding of these interactions could lead to new, targeted therapies for cancers with limited treatment options, such as triple negative breast cancer (TNBC). To overcome limitations of standard monolayer cell cultures and xenograft models that lack tumor complexity and/or human stroma, we have developed a high throughput tumor spheroid technology utilizing a polymeric aqueous two-phase system to conveniently model interactions of CAFs and TNBC cells and quantify effects on signaling and drug resistance of cancer cells...
January 2, 2018: Oncotarget
https://www.readbyqxmd.com/read/29416107/presence-of-high-endothelial-venules-correlates-with-a-favorable-immune-microenvironment-in-oral-squamous-cell-carcinoma
#16
Anna Maria Wirsing, Ida Korsnes Ervik, Marit Seppola, Lars Uhlin-Hansen, Sonja Eriksson Steigen, Elin Hadler-Olsen
Oral squamous cell carcinomas are associated with a poor prognosis, which may be partly due to functional impairment of the immune response. Lymphocyte recruitment to the tumor site is facilitated by high-endothelial venules, whereas expression of programmed-death ligand 1 (PD-L1) can impair T-cell function. Thus, we hypothesize that these factors are important in shaping the immune response in oral squamous cell carcinoma. In the present study, we characterized the immune infiltrate in formalin-fixed, paraffin-embedded tumor samples from 75 oral squamous cell carcinoma patients...
February 7, 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29414663/implication-of-increased-serum-stromal-cell-derived-factor-1-for-primary-biliary-cholangitis
#17
Zaixing Yang, Yan Liang, Feng Lin, Zhencheng Zhang, Wanwan Luo, Yuting Zhang, Renqian Zhong
BACKGROUND: Stromal cell-derived factor-1 (SDF-1), also called chemokine (C-X-C motif) ligand 12 (CXCL12), as a chemokine for premature B cells, T cells and monocytes, is detected in liver, pancreas, spleen and heart. However, its diagnostic value for primary biliary cholangitis (PBC) as well as the association of SDF-1 with inflammatory and fibrotic progression is unclear. The aim of this study was to determine serum stromal cell-derived factor-1 (SDF-1) level and to explore its diagnostic value for primary biliary cholangitis (PBC) as well as the association of SDF-1 with inflammatory and fibrotic progression of PBC...
February 2, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29408710/delayed-release-of-chemokine-ccl25-with-bioresorbable-microparticles-for-mobilization-of-human-mesenchymal-stem-cells
#18
Kristin Fröhlich, David Hartzke, Franziska Schmidt, Jan Eucker, Aleksander Gurlo, Michael Sittinger, Jochen Ringe
Chemokines are guiding cues for directional trafficking of mesenchymal stem cells (MSC) upon injury and local chemokine delivery at injury sites is an up-to-date strategy to potentiate and prolong recruitment of MSC. In this study we present the chemokine CCL25, also referred to as thymus-expressed chemokine, to mobilize human MSC along positive but not along negative gradients. We hence proceeded to design a biodegradable and injectable release device for CCL25 on the basis of poly(lactic-co-glycolic acid) (PLGA)...
February 1, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29408206/the-5t4-oncofetal-glycoprotein-does-not-act-as-a-general-organizer-of-the-cxcl12-system-in-cancer-cells
#19
Malte Puchert, Christian Koch, Jürgen Engele
The chemokine, CXCL12, promotes cancer growth and metastasis through interaction with either CXCR4 and/or CXCR7. This tumor-specific organization of the CXCL12 system obscures current therapeutic approaches, aiming at the selective inactivation of CXCL12 receptors. Since it has been previously suggested that the cellular use of CXCR4 or CXCR7 is dictated by the 5T4 oncofetal glycoprotein, we have now tested whether 5T4 would represent a general and reliable marker for the organization of the CXCL12 system in cancer cells...
February 2, 2018: Experimental Cell Research
https://www.readbyqxmd.com/read/29407886/noncanonical-nf-%C3%AE%C2%BAb-signaling-in-microvessels-of-atherosclerotic-lesions-is-associated-with-inflammation-atheromatous-plaque-morphology-and-myocardial-infarction
#20
Chrissta X Maracle, Rabia Agca, Boy Helder, John A L Meeuwsen, Hans W M Niessen, Erik A L Biessen, Menno P J de Winther, Saskia C A de Jager, Mike T Nurmohamed, Sander W Tas
BACKGROUND AND AIMS: Neovascularization is associated with atherosclerotic plaque instability and increased chance of myocardial infarction (MI). Patients with chronic inflammatory diseases (CID) have increased risk of atherosclerosis, and evidence demonstrates that NF-κB inducing kinase (NIK)-mediated noncanonical NF-κB signaling in endothelial cells (EC) is linked to inflammation and angiogenesis. Here, we hypothesized NIK may also be activated in EC of atherosclerotic lesion microvessels...
January 29, 2018: Atherosclerosis
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