Search results for: DPP4 assay kit
#28615725 2017/06/15 Save this To Up
Transcriptome analysis reveals similarities between human blood CD3(-) CD56(bright) cells and mouse CD127(+) innate lymphoid cells.For many years, human peripheral blood natural killer (NK) cells have been divided into functionally distinct CD3(-) CD56(bright) CD16(-) and CD3(-) CD56(dim) CD16(+) subsets. Recently, several groups of innate lymphoid cells (ILC), distinct from NK cells in development and function, have been defined in mouse. A signature of genes present in mouse ILC except NK cells, defined by Immunological Genome Project studies, is significantly over-represented in human CD56(bright) cells, by gene set enrichment analysis. Conversely, the signature genes of mouse NK cells are enriched in human CD56(dim) cells. Correlations are based upon large differences in expression of a few key genes. CD56(bright) cells show preferential expression of ILC-associated IL7R (CD127), TNFSF10 (TRAIL), KIT (CD117), IL2RA (CD25), CD27, CXCR3, DPP4 (CD26), GPR183, and MHC class II transcripts and proteins. This could indicate an ontological relationship between human CD56(bright) cells and mouse CD127(+) ILC, or conserved networks of transcriptional regulation. In line with the latter hypothesis, among transcription factors known to impact ILC or NK cell development, GATA3, TCF7 (TCF-1), AHR, SOX4, RUNX2, and ZEB1 transcript levels are higher in CD56(bright) cells, while IKZF3 (AIOLOS), TBX21 (T-bet), NFIL3 (E4BP4), ZEB2, PRDM1 (BLIMP1), and RORA mRNA levels are higher in CD56(dim) cells.
2223 related Products with: Transcriptome analysis reveals similarities between human blood CD3(-) CD56(bright) cells and mouse CD127(+) innate lymphoid cells.Astra Blue 6GLL, Stain fo Human Cord Blood CD34+ Ce Mouse Anti-Human Dendriti Mouse Anti-Human Endothel Mouse Anti-Human Endothel Mouse Anti-Human Follicul Mouse Anti-Human Follicul Mouse Anti-Human CD3 [+FI Mouse Anti-Human Fibrobla Mouse Anti-Human Fibrobla Mouse Anti-Human Follicul Mouse Anti-Human Follicul
#28122740 2017/01/26 Save this To Up
Single-cell molecular analysis defines therapy response and immunophenotype of stem cell subpopulations in CML.Understanding leukemia heterogeneity is critical for the development of curative treatments as the failure to eliminate therapy-persistent leukemic stem cells (LSCs) may result in disease relapse. Here we have combined high-throughput immunophenotypic screens with large-scale single-cell gene expression analysis to define the heterogeneity within the LSC population in chronic phase chronic myeloid leukemia (CML) patients at diagnosis and following conventional tyrosine kinase inhibitor (TKI) treatment. Our results reveal substantial heterogeneity within the putative LSC population in CML at diagnosis and demonstrate differences in response to subsequent TKI treatment between distinct subpopulations. Importantly, LSC subpopulations with myeloid and proliferative molecular signatures are proportionally reduced at a higher extent in response to TKI therapy compared with subfractions displaying primitive and quiescent signatures. Additionally, cell surface expression of the CML stem cell markers CD25, CD26, and IL1RAP is high in all subpopulations at diagnosis but downregulated and unevenly distributed across subpopulations in response to TKI treatment. The most TKI-insensitive cells of the LSC compartment can be captured within the CD45RA(-) fraction and further defined as positive for CD26 in combination with an aberrant lack of cKIT expression. Together, our results expose a considerable heterogeneity of the CML stem cell population and propose a Lin(-)CD34(+)CD38(-/low)CD45RA(-)cKIT(-)CD26(+) population as a potential therapeutic target for improved therapy response.
1020 related Products with: Single-cell molecular analysis defines therapy response and immunophenotype of stem cell subpopulations in CML.Macrophage Colony Stimula Macrophage Colony Stimula DiscoveryPak™ Stem Cell anti HSV (II) gB IgG1 (mo anti HCMV IE pp65 IgG1 (m anti HCMV gB IgG1 (monocl CELLKINES Natural Human I CELLKINES INTERLEUKIN 2 ( CELLKINES INTERLEUKIN 2 ( Human Stem Cell Factor SC Jurkat Cell Extract (Indu Jurkat Cell Extract (Indu
#28087908 2017/01/14 Save this To Up
[Berberine regulates glycemia via local inhibition of intestinal dipeptidyl peptidase-Ⅳ].Objective: To investigate the effect of berberine on glycemia regulation in rats with diabetes and the related mechanisms. Methods: Diabetic-like rat model was successfully induced by intraperitoneal injection of streptozotocin in 50 out of 60 male SD rats, which were then randomly divided into 5 groups with 10 rats in each:control group (received vehicle only), positive drug control group (sitagliptin 10 mg·kg(-1)·d(-1)), low-dose berberine group (30 mg·kg(-1)·d(-1)), moderate-dose berberine group (60 mg·kg(-1)·d(-1)), and high-dose berberine group (120 mg·kg(-1)·d(-1)). All animals were fed for 3 d, and fasting blood sampling was performed on day 3 of administration. Rats were given glucose (2 g/kg) by gavage 30 min after the last dose. Blood and intestinal samples were obtained 2 h after glucose loading. Fasting blood glucose (FBG) and 2-h postprandial plasma glucose (2h-PPG) were detected by using biochemical analyzer, and insulin, glucagon-like peptide-1 (GLP-1) and dipeptidyl peptidase-Ⅳ(DPP-Ⅳ) were measured by using ELISA kit. Results: No significant difference in FBG and serum DPP-Ⅳ level were found between berberine groups and control group (all P>0.05). Compared with control group, serum levels of GLP-1 and insulin were increased in high-and moderate-dose berberine groups, while 2h-PPG was decreased (all P<0.05); GLP-1 levels in the intestinal samples were increased, while DPP-Ⅳ levels were decreased in all berberine groups (all P<0.05). Conclusions: Short-term berberine administration can decrease 2h-PPG level in streptozotocin-induced diabetic rat model through local inhibition of intestinal DPP-Ⅳ. The efficacy of DPP-Ⅳ inhibitor may be associated with its intestinal pharmacokinetics.
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#27664490 2016/09/25 Save this To Up
Prognostic Significance of Serum CD26 Concentration in Patients with Esophageal Squamous Cell Carcinoma.Esophageal squamous cell carcinoma (ESCC) is one of the most common cancers in developing countries. The aim of the study was to determine the association between serum CD26 concentration and outcome of patients with ESCC.
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#26471376 2015/10/16 Save this To Up
Serum CD26 levels in patients with gastric cancer: a novel potential diagnostic marker.CD26 is an ectoenzyme with dipeptidyl peptidase 4 (DPP4) activity expressed on a variety of cell types. Considering that serum CD26 levels have been previously associated with different cancers, we examined the potential diagnostic value of serum CD26 levels in gastric cancer.
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#25526639 2014/12/20 Save this To Up
Clinical significance of soluble CD26 in malignant pleural mesothelioma.There is no established single diagnostic marker for malignant pleural mesothelioma (MPM). CD26 is a 110 kDa, multifunctional, membrane-bound glycoprotein that has dipeptidyl peptidase IV (DPPIV) enzyme activity. The aim of this study was to evaluate the clinical significance of soluble CD26 (sCD26) in patients with MPM. The study included 80 MPM patients, 79 subjects with past asbestos exposure (SPE), and 134 patients with other benign pleural diseases (OPD) that were included as a control group. sCD26 levels and DPPIV activity in serum and/or pleural fluid were determined using an ELISA kit. Serum sCD26 levels and DPPIV enzyme activity in patients with MPM were significantly decreased compared with those in the SPE group (P = 0.000). The level of serum sCD26 was significantly decreased in patients with advanced stages of MPM compared with those with earlier stages (P = 0.047). The median OS of patients with MPM who had higher DPPIV enzyme activity was significantly longer than that of those with lower DPPIV enzyme activity (P = 0.032). The sCD26 levels in the pleural fluid of MPM patients with an epithelioid subtype were significantly increased compared with the OPD cohort (P = 0.012). Moreover, DPPIV enzyme activity in the pleural fluid of patients with MPM with an epithelioid subtype were significantly increased compared with those in the OPD cohort (P = 0.009). Patients with MPM who had lower specific DPPIV activity, determined as DPPIV/sCD26, showed significantly prolonged survival compared with those with higher specific DPPIV activity (P = 0.028). Serum sCD26 and DPPIV enzyme activity appear to be useful biomarkers for differentiating patients with MPM from SPE. The sCD26 levels or DPPIV enzyme activity in pleural fluid appear to be biomarkers in patients with an epithelioid subtype of MPM. DPPIV activity in serum or pleural fluid appears to be predictive for the prognosis of patients with MPM.
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#23122333 2012/11/26 Save this To Up
Polymorphisms in dipeptidyl peptidase IV gene are associated with the risk of myocardial infarction in patients with atherosclerosis.Dipeptidyl peptidase IV (DPP-IV) is not only important in pancreatic β-cell regulation but also has proinflammatory actions that can contribute to atherosclerosis progression. Previously, we showed that DPP-IV is co-localized with CD31 (an endothelial cell marker) in the neovessels within the human atherosclerotic plaques. These characteristics of DPP-IV may predispose patients with coronary artery disease (CAD) to plaque rupture and thus to myocardial infarction. The goal of this investigation was to determine whether genetic alterations in DPP-IV predispose to plaque vulnerability and myocardial infarction (MI).
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#22219460 2012/04/18 Save this To Up
CD26/DPP-4 inhibition recruits regenerative stem cells via stromal cell-derived factor-1 and beneficially influences ischaemia-reperfusion injury in mouse lung transplantation.The CD26 antigen is a transmembrane glycoprotein that is constitutively expressed on activated lymphocytes and in pulmonary parenchyma. This molecule is also identified as dipeptidyl peptidase-4 (DPP-4) that cleaves a host of biologically active peptides. Here, we aimed to identify an important substrate of CD26/DPP-4-stromal cell-derived factor-1 (SDF-1/CXCL12)-as a key modulator for stem-cell homing together with its receptor CXCR4 in response to ischaemic injury of the lung.
2969 related Products with: CD26/DPP-4 inhibition recruits regenerative stem cells via stromal cell-derived factor-1 and beneficially influences ischaemia-reperfusion injury in mouse lung transplantation.Macrophage Colony Stimula Macrophage Colony Stimula Mouse Stromal Cell-Derive Mouse Stromal Cell-Derive 129 Mouse Embryonic Stem Human Stromal Cell-Derive Human Stromal Cell-Derive Mouse Insulin-like Growth Mouse Stem Cell Factor SC thymic dendritic cell-der Feline Stromal Cell-Deriv Inflammation (Mouse) Quan
#22093941 2011/12/26 Save this To Up
Method comparison of dipeptidyl peptidase IV activity assays and their application in biological samples containing reversible inhibitors.Dipeptidyl peptidase IV (DPPIV, DPP4) is a serine protease that releases N-terminal dipeptides. It is a validated drug target for type 2 diabetes and DPPIV inhibitors are currently evaluated for other therapeutic applications. Various assays are used for DPPIV activity measurements in biological samples. Highly sensitive methods are needed to measure also very low activities in inhibited samples.
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#18468248 2008/05/12 Save this To Up
Cloning and characterization of liver progenitor cells from the scattered cell clusters in primary culture of porcine livers.The scattered cell clusters that can differentiate into hepatocytes or biliary epithelial cells have been isolated from primary cultures of adult porcine livers. We have generated 11 clonal cell lines from this system and identified liver progenitor cells (LPCs) among the clonal lines. These clonal lines expressed c-kit, HNF-1, HNF-6, and/or CK19 mRNA. An immunocytochemical study of the clonal lines indicated that clonal line CL-11 expressed liver epithelial cell markers CK14, vimentin, CK18, and BD-1. The expression of albumin and alpha1-antitrypsin (alpha1-AT) mRNA was only upregulated in CL-11 among the clonal lines when they were grown as aggregates. Under these conditions, CL-11 also exhibited ammonia metabolic activity and several indicators that suggest hepatocytic differentiation, including the upregulation of liver-specific genes such as dipeptidyl peptidase IV, CYP1A1, and CYP3A4 mRNA, and the downregulation of biliary cell markers such as gamma-glutamyltrans-peptidase (GGT), CK19, and HNF6 mRNA. After culturing CL-11 in Matrigel, the expression of GGT and HNF6 mRNA was upregulated. These results indicate that CL-11 has dual potential: the ability to differentiate as hepatocytes or as bile duct cells. The isolation of scattered cells could provide a simple method to generate LPC lines from adult livers.
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