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https://www.readbyqxmd.com/read/28345865/human-milk-oligosaccharide-specificities-of-human-galectins-comparison-of-electrospray-ionization-mass-spectrometry-and-glycan-microarray-screening-results
#1
Km Shams-Ud-Doha, Elena N Kitova, Pavel I Kitov, Yves St-Pierre, John S Klassen
The affinities of thirty-two free human milk oligosaccharides (HMOs) for four human galectin proteins - a stable mutant of hGal1 (hGal-1), a C-terminal fragment of hGal-3 (hGal-3C), hGal-7 and an N-terminal fragment of hGal-9 (hGal-9N) - were measured using electrospray ionization mass spectrometry (ESI-MS). The binding data show that each of the four galectins recognize the majority of the HMOs tested (hGal-1 binds thirty-two HMOs, hGal-3C binds twenty-six, hGal-7 binds thirty-one and hGal-9N binds twenty-six)...
March 27, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28345468/surface-bound-galectin-4-regulates-gene-transcription-and-secretion-of-chemokines-in-human-colorectal-cancer-cell-lines
#2
U Subrahmanyeswara Rao, Prema S Rao
One long-term complication of chronic intestinal inflammation is the development of colorectal cancer. However, the mechanisms linking inflammation to the colorectal tumorigenesis are poorly defined. Previously, we have demonstrated that galectin-4 is predominantly expressed in the luminal epithelia of the gastrointestinal tract, and its loss of expression plays a key role in the colorectal tumorigenesis. However, the mechanism by which galectin-4 regulates inflammation-induced tumorigenesis is unclear. Here, we show that galectin-4 secreted by the colorectal cancer cell lines was bound to the cell surface...
March 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28345074/single-cell-rna-seq-and-computational-analysis-using-temporal-mixture-modelling-resolves-th1-tfh-fate-bifurcation-in-malaria
#3
Tapio Lönnberg, Valentine Svensson, Kylie R James, Daniel Fernandez-Ruiz, Ismail Sebina, Ruddy Montandon, Megan S F Soon, Lily G Fogg, Arya Sheela Nair, Urijah Liligeto, Michael J T Stubbington, Lam-Ha Ly, Frederik Otzen Bagger, Max Zwiessele, Neil D Lawrence, Fernando Souza-Fonseca-Guimaraes, Patrick T Bunn, Christian R Engwerda, William R Heath, Oliver Billker, Oliver Stegle, Ashraful Haque, Sarah A Teichmann
Differentiation of naïve CD4(+) T cells into functionally distinct T helper subsets is crucial for the orchestration of immune responses. Due to extensive heterogeneity and multiple overlapping transcriptional programs in differentiating T cell populations, this process has remained a challenge for systematic dissection in vivo. By using single-cell transcriptomics and computational analysis using a temporal mixtures of Gaussian processes model, termed GPfates, we reconstructed the developmental trajectories of Th1 and Tfh cells during blood-stage Plasmodium infection in mice...
March 3, 2017: Science Immunology
https://www.readbyqxmd.com/read/28344887/pd-l1-galectin-9-and-cd8-tumor-infiltrating-lymphocytes-are-associated-with-survival-in-hepatocellular-carcinoma
#4
Kostandinos Sideras, Katharina Biermann, Joanne Verheij, Bart R Takkenberg, Shanta Mancham, Bettina E Hansen, Hannah M Schutz, Robert A de Man, Dave Sprengers, Sonja I Buschow, Maddy C M Verseput, Patrick P C Boor, Qiuwei Pan, Thomas M van Gulik, Turkan Terkivatan, Jan N M Ijzermans, Ulrich H W Beuers, Stefan Sleijfer, Marco J Bruno, Jaap Kwekkeboom
Novel systemic treatments for hepatocellular carcinoma (HCC) are strongly needed. Immunotherapy is a promising strategy that can induce specific antitumor immune responses. Understanding the mechanisms of immune resistance by HCC is crucial for development of suitable immunotherapeutics. We used immunohistochemistry on tissue-microarrays to examine the co-expression of the immune inhibiting molecules PD-L1, Galectin-9, HVEM and IDO, as well as tumor CD8(+) lymphocyte infiltration in HCC, in two independent cohorts of patients...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28340358/lysosomal-rupture-induced-by-structurally-distinct-chitosans-either-promotes-a-type-1-ifn-response-or-activates-the-inflammasome-in-macrophages
#5
David Fong, Pascal Grégoire-Gélinas, Alexandre P Cheng, Tal Mezheritsky, Marc Lavertu, Sachiko Sato, Caroline D Hoemann
Chitosan is a family of glucosamine and N-acetyl glucosamine polysaccharides with poorly understood immune modulating properties. Here, functional U937 macrophage responses were analyzed in response to a novel library of twenty chitosans with controlled degree of deacetylation (DDA, 60-98%), molecular weight (1 to >100 kDa), and acetylation pattern (block vs. random). Specific chitosan preparations (10 or 190 kDa 80% block DDA and 3, 5, or 10 kDa 98% DDA) either induced macrophages to release CXCL10 and IL-1ra at 5-50 μg/mL, or activated the inflammasome to release IL-1β and PGE2 at 50-150 μg/mL...
March 15, 2017: Biomaterials
https://www.readbyqxmd.com/read/28339804/intra-cardiac-and-peripheral-levels-of-biochemical-markers-of-fibrosis-in-patients-undergoing-catheter-ablation-for-atrial-fibrillation
#6
Gordon A Begg, Rashed Karim, Tobias Oesterlein, Lee N Graham, Andrew J Hogarth, Stephen P Page, Christopher B Pepper, Kawal Rhode, Gregory Y H Lip, Arun V Holden, Sven Plein, Muzahir H Tayebjee
Aims: Measurement of circulating biomarkers of fibrosis may have a role in selecting patients and treatment strategy for catheter ablation. Pro-collagen type III N-terminal pro-peptide (PIIINP), C-telopeptide of type I collagen (ICTP), fibroblast growth factor 23 (FGF-23), and galectin 3 (gal-3) have all been suggested as possible biomarkers for this indication, but studies assessing whether peripheral levels reflect intra-cardiac levels are scarce. Methods and results: We studied 93 patients undergoing ablation for paroxysmal atrial fibrillation (AF) (n = 63) or non-paroxysmal AF (n = 30)...
February 27, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28336327/galectin-1-driven-upregulation-of-sdf-1-in-pancreatic-stellate-cells-promotes-pancreatic-cancer-metastasis
#7
Dong Qian, Zipeng Lu, Qingcheng Xu, Pengfei Wu, Lei Tian, Liangtao Zhao, Baobao Cai, Jie Yin, Yang Wu, Kevin F Staveley-O'Carroll, Kuirong Jiang, Yi Miao, Guangfu Li
Galectin-1, mainly expressed in activated pancreatic stellate cells (PSCs), is involved in many important cancer-related processes. However, very little is known how Galectin-1 modulates PSCs and subsequently impacts pancreatic cancer cells (PCCs). Our chemokine antibody array and in vitro studies demonstrates that Galectin-1 induces secretion of stromal cell-derived factor-1(SDF-1) in PSCs by activating NF-κB signaling. The secreted SDF-1 increases migration and invasion of PCCs. Knockdown of Galectin-1 and inhibitor-mediated blockade of SDF-1 as well as its ligand CXCR4 and NF-κB verifies the findings...
March 20, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28336260/the-analysis-of-human-conjunctival-epithelium-proteome-in-ocular-surface-diseases-using-impression-cytology-and-2d-dige
#8
Javier Soria, Arantxa Acera, Juan A Durán, Ana Boto-de-Los-Bueis, Almudena Del-Hierro-Zarzuelo, Nerea González, Rebeca Reigada, Tatiana Suárez
Conjunctival impression cytology samples from patients with meibomian gland dysfunction (MGD), dry eye (DE), and healthy subjects (CT) were collected for determination of the degree of squamous metaplasia (SM) by PAS-hematoxylin staining and for comparative proteomic analyses by 2D-DIGE. The protein spots with discriminant expression were identified by MALDI-TOF/TOF mass spectrometry. Three independent statistical studies were conducted: i). Analysis of differential protein expression between study groups: We observed increased expression of proteins S100A4, S100A8, retinal dehydrogenase-1, peroxiredoxin-1, annexin-A1, annexin-A2, α-enolase, and glutathione S-transferase-P in DE, whereas the highest expression of peroxiredoxin-6, actin cytoplasmic-1, peroxiredoxin-2, and heat shock protein HSP-90-α was observed in MGD; ii)...
March 20, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28326825/role-of-biomarkers-in-predicting-diabetes-complications-with-special-reference-to-diabetic-foot-ulcers
#9
Sivakamasundari Pichu, Bhoomika M Patel, Subbu Apparsundaram, Ramesh K Goyal
Diabetic foot ulcer (DFU) is one of the major complications of diabetes and about 1% of people with diabetes have to go for lower limb amputation. With better understanding of the pathological basis of DFU, number of biomarkers like atrial natriuretic peptides, galectin-3, and cardiac troponins for diabetic cardiomyopathy, cystatin C for diabetics nephropathy and C-reactive protein for infection and procalcitonin could aid in early and noninvasive diagnosis especially when clinical signs are misleading. Predictive role of novel biomarkers in primary prevention however, requires additional studies considering sex, age and multiple complications in DFU...
March 14, 2017: Biomarkers in Medicine
https://www.readbyqxmd.com/read/28322756/establishing-reference-intervals-for-galectin-3-concentrations-in-serum-requires-careful-consideration-of-its-biological-determinants
#10
Magdalena Krintus, Marek Kozinski, Tomasz Fabiszak, Jacek Kubica, Mauro Panteghini, Grazyna Sypniewska
BACKGROUND: Appropriately established reference intervals for laboratory biomarkers may help the interpretation of their results and facilitate clinical utilization. OBJECTIVES: i) To determine reference intervals for serum galectin-3 measured using the Architect STAT immunoassay, and ii) to identify factors affecting galectin-3 concentrations. METHODS: We recruited 533 questionnaire-identified apparently healthy individuals, in which laboratory biomarkers were used to detect asymptomatic myocardial injury and dysfunction, ongoing inflammation, hyperglycemia, dyslipidemia, and renal dysfunction...
March 18, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/28322201/association-of-cardiac-galectin-3-expression-myocarditis-and-fibrosis-in-chronic-chagas-disease-cardiomyopathy
#11
Bruno Solano de Freitas Souza, Daniela Nascimento Silva, Rejane Hughes Carvalho, Gabriela Louise de Almeida Sampaio, Bruno Diaz Paredes, Luciana Aragão França, Carine Machado Azevedo, Juliana Fraga Vasconcelos, Cassio Santana Meira, Paulo Chenaud Neto, Simone Garcia Macambira, Kátia Nunes da Silva, Kyan James Allahdadi, Fabio Tavora, João David de Souza Neto, Ricardo Ribeiro Dos Santos, Milena Botelho Pereira Soares
Chronic Chagas disease cardiomyopathy, caused by Trypanosoma cruzi infection, is a major cause of heart failure in Latin America. Galectin-3 (Gal-3) has been linked to cardiac remodeling and poor prognosis in heart failure of different etiologies. Herein, we investigated the involvement of Gal-3 in the disease pathogenesis and its role as a target for disease intervention. Gal-3 expression in mouse hearts was evaluated during T. cruzi infection by confocal microscopy and flow cytometry analysis, showing a high expression in macrophages, T cells, and fibroblasts...
March 16, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28321034/galectin-9-as-a-predictive-marker-for-the-onset-of-immune-related-adverse-effects-associated-with-anti-ccr4-moab-therapy-in-patients-with-adult-t-cell-leukemia
#12
Tareg Omer Mohammed, Haorile Chagan-Yasutan, Yugo Ashino, Wakana Nakayama, Yayoi Takahashi, Taizo Shimomura, Tetsuhiro Fujimoto, Yuko Watanabe, Toshiro Niki, Hitoshi Suzushima, Toshio Hattori
Adult T-cell leukemia/lymphoma (ATL/ATLL) is one of the most malignant lymphomas with poor prognosis. ATL/ATLL cells express CC chemokine receptor 4, and mogamulizumab (anti-CCR4 monoclonal antibody) exhibits strong cytotoxicity for ATL/ATLL cells. We analyzed plasma samples of 6 patients with ATL/ATLL treated with chemotherapy followed by mogamulizumab therapy (mogatherapy) for changes in the levels of biomarkers in relation to immune-related adverse effects. As treatment is often associated with skin eruptions, we investigated the profiles of inflammatory cytokines, including galectin-9 (Gal-9), which becomes increased in various infectious diseases and allergic patients...
2017: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28319050/extracellular-matrix-proteomics-identifies-molecular-signature-of-symptomatic-carotid-plaques
#13
Sarah R Langley, Karin Willeit, Athanasios Didangelos, Ljubica Perisic Matic, Philipp Skroblin, Javier Barallobre-Barreiro, Mariette Lengquist, Gregor Rungger, Alexander Kapustin, Ludmilla Kedenko, Chris Molenaar, Ruifang Lu, Temo Barwari, Gonca Suna, Xiaoke Yin, Bernhard Iglseder, Bernhard Paulweber, Peter Willeit, Joseph Shalhoub, Gerard Pasterkamp, Alun H Davies, Claudia Monaco, Ulf Hedin, Catherine M Shanahan, Johann Willeit, Stefan Kiechl, Manuel Mayr
BACKGROUND: The identification of patients with high-risk atherosclerotic plaques prior to the manifestation of clinical events remains challenging. Recent findings question histology- and imaging-based definitions of the "vulnerable plaque," necessitating an improved approach for predicting onset of symptoms. METHODS: We performed a proteomics comparison of the vascular extracellular matrix and associated molecules in human carotid endarterectomy specimens from 6 symptomatic versus 6 asymptomatic patients to identify a protein signature for high-risk atherosclerotic plaques...
March 20, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28318874/metabolic-profile-provides-prognostic-value-better-than-galectin-3-in-patients-with-heart-failure
#14
Chao-Hung Wang, Mei-Ling Cheng, Min-Hui Liu, Li-Tang Kuo, Ming-Shi Shiao
BACKGROUND: Metabolic profiles have been shown to provide prognostic information in patients with heart failure (HF). Galectin-3 (Gal-3), indicating cardiac fibrosis, is a documented biomarker of prognosis in HF. It is unknown whether metabolic profiles provide prognostic value better than Gal-3. METHODS AND RESULTS: This study analyzed 212 hospitalized HF patients, measuring metabolic score (composed by butyrylcarnitine, dimethylarginine/arginine ratio, spermidine, and total essential amino acids) and Gal-3...
March 16, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/28302916/advances-in-heart-failure-a-review-of-biomarkers-emerging-pharmacological-therapies-durable-mechanical-support-and-telemonitoring
#15
REVIEW
Yasbanoo Moayedi, Heather J Ross
The purpose of this review is to provide an overview of diagnosis, prognosis and management of heart failure (HF) with reduced ejection fraction (HFrEF). Specifically, this review is divided into three sections. The first section will address biomarkers. The discovery of biomarkers has allowed further understanding of the pathophysiology of HF and provides insight into potential therapeutic targets. This review will focus on novel applications of natriuretic peptides (NPs) in clinical trials. Next, emerging biomarkers of HF, such as ST2, galectin-3 and copeptin, will be discussed...
April 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28300581/a-galectin-contributes-to-the-innate-immune-recognition-and-elimination-of-pathogens-in-the-freshwater-mussel-hyriopsis-cumingii
#16
Zhiyi Bai, Liting Zhao, Xiajun Chen, Qingqing Li, Jiale Li
Galectins are members of the lectin superfamily. They function as pattern recognition receptors in the innate immune system of vertebrates and invertebrates. A galectin homolog from the triangle sail mussel Hyriopsis cumingii (HcGal2) was cloned and characterized. HcGal2 mRNA was expressed in all tissues examined, displaying particular enrichment in mantle tissue. Interestingly, rHcGAL2 protein was only detected in the mantle, hemocytes, and gills, suggesting that post-transcriptional regulation may occur. HcGal2 expression was induced in the mantle, liver, and hemocytes after exposure to lipopolysaccharides, Gram-negative bacteria (Aeromonas hydrophila), and Gram-positive bacteria (Staphylococcus aureus)...
March 11, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28300160/comparison-of-proteomic-profiles-in-the-zebrafish-retina-during-experimental-degeneration-and-regeneration
#17
Karen Eastlake, Wendy E Heywood, Dhani Tracey-White, Erika Aquino, Emily Bliss, Gerardo R Vasta, Kevin Mills, Peng T Khaw, Mariya Moosajee, G Astrid Limb
Zebrafish spontaneously regenerate the retina after injury. Although the gene expression profile has been extensively studied in this species during regeneration, this does not reflect protein function. To further understand the regenerative process in the zebrafish, we compared the proteomic profile of the retina during injury and upon regeneration. Using two-dimensional difference gel electrophoresis (2D-DIGE) and label-free quantitative proteomics (quadrupole time of flight LC-MS/MS), we analysed the retina of adult longfin wildtype zebrafish at 0, 3 and 18 days after Ouabain injection...
March 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28295609/serum-galectin-3-level-as-a-marker-of-thrombogenicity-in-atrial-fibrillation
#18
Duygu Kocyigit, Kadri Murat Gurses, Muhammed Ulvi Yalcin, Hande Canpinar, Ugur Canpolat, Banu Evranos, Hikmet Yorgun, Necla Ozer, Dicle Guc, Kudret Aytemir
BACKGROUND: Left atrial appendage flow velocity (LAAFV) and presence of spontaneous echo contrast (SEC) have been reported to be predictors of thromboembolism in atrial fibrillation (AF) patients. Galectin-3 is a biomarker reflecting pro-inflammatory status, whose role in AF has recently drawn attention, particularly in persistent AF population. AIM: In this study we aimed to investigate the association between serum galectin-3 levels and echocardiographic predictors of thromboembolism in persistent AF patients...
March 13, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28294855/-relationship-between-blood-serum-galectin-and-renal-dysfunction-in-st-elevation-myocardial-infarction
#19
V N Karetnikova, A V Osokina, M V Evseeva, O V Gruzdeva, M V Zykov, V V Kalaeva, V V Kashtalap, K S Shafranskaya, O N Khryachkova, O L Barbarash
AIM: to assess value for inhospital and 1 year prognosis of unfavorable course of ST-elevation myocardial infarction (STEMI) of blood serum galectin and markers of renal dysfunction (RD). MATERIAL AND METHODS: Standard laboratory and instrumental examination, calculation of glomerular filtration rate using MDRD formula and by cystatin C level, determination of galectin in blood serum were carried out in 128 patients with STEMI. According to GFR by cystatin C level on day 12 of STEMI patients were divided into 2 groups - with normal renal function (GFR more or equal 60 ml/min/1...
April 2016: Kardiologiia
https://www.readbyqxmd.com/read/28293788/tumor-cells-interact-with-red-blood-cells-via-galectin-4-a-short-report
#20
Reham Helwa, Anette Heller, Stian Knappskog, Andrea S Bauer
BACKGROUND: The ability of tumor cells to invade and metastasize is relevant to the process of cancer progression and, as such, it represents an obstacle to cancer cure. So far, limited information is available on interactions between circulating tumor cells and blood cells. It is well-documented that galectin-4 is upregulated in many types of tumor cells and is involved in metastasis. Here, we address the hypothesis that tumor cells may interact with red blood cells (RBCs) via galectin-4...
March 14, 2017: Cellular Oncology (Dordrecht)
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