A novel antibody microarray format using non-covalent antibody immobilization with chemiluminescent detection

2007 ◽  
Vol 3 (1) ◽  
pp. 36-42 ◽  
Author(s):  
Kazue Usui-Aoki ◽  
Kiyo Shimada ◽  
Hisashi Koga
Keyword(s):  
Antibody Immobilization ◽  
Antibody Microarray ◽  
Chemiluminescent Detection ◽  
Microarray Format

Detection of lung cancer-associated proteins with antibody microarray technique

2005 ◽  
Vol 53 (S 01) ◽  
Author(s):  
B Bartling ◽  
A Simm ◽  
T Böttger ◽  
G Hansen ◽  
S Burdach ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Antibody Microarray ◽  
Associated Proteins ◽  
Microarray Technique

Protein expression changes in cells inoculated with Equine Influenza Virus: antibody microarray analysis

2013 ◽  
Vol 16 (4) ◽  
pp. 663-669
Author(s):  
W. Rozek ◽  
M. Kwasnik ◽  
J.F. Zmudzinski
Keyword(s):  
Influenza Virus ◽  
Protein Quality ◽  
Biological Properties ◽  
Regulation Of Transcription ◽  
Equine Influenza Virus ◽  
Virus Antibody ◽  
Antibody Microarray ◽  
Equine Influenza ◽  
Microarray Technique ◽  
In Cells

AbstractChanges in the level of cellular proteins in cells inoculated with equine influenza virus H7N7 and H3N8 were studied with microarray technique. H3N8 induced pro-apoptotic proteins while H7N7 induced both pro- as well as anti-apoptotic factors. The higher level of some cytoskeleton components and proteins involved in the protein quality control was recorded. Relatively high number of proteins involved in the regulation of transcription was down-regulated. The pattern of changes observed for H7N7 and H3N8 may reflect differences in the biological properties of both serotypes.

scholarly journals CXCR6-CXCL16 Axis Promotes Breast Cancer by Inducing Oncogenic Signaling

Cancers ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 3568
Author(s):  
Hina Mir ◽  
Neeraj Kapur ◽  
Dominique N. Gales ◽  
Praveen K. Sharma ◽  
Gabriela Oprea-Ilies ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Actin Polymerization ◽  
Biological Significance ◽  
Stage Ii ◽  
Stage Iii ◽  
Soluble Form ◽  
Migration And Invasion ◽  
Antibody Microarray ◽  
Terminal Fragment ◽  
Significant Difference

Precise mechanisms underlying breast cancer (BrCa) metastasis are undefined, which becomes a challenge for effective treatments. Chemokine signaling instigates the trafficking of cancer cells in addition to leukocytes. This study aimed to ascertain the clinical and biological significance of the CXCR6/CXCL16 signaling axis in the pathobiology of BrCa. Our data show a higher expression of CXCR6 in BrCa cell lines and tissues. Stage-III BrCa tissues express significantly higher CXCR6 compared to stage-II tissues. The ligand, CXCL16, could remain tethered to the cell surface, and, after proteolytic shedding of the ectodomain, the N-terminal fragment is released, converting it to its oncogenic, soluble form. Like CXCR6, N-terminal CXCL16 and ADAM-10 were significantly higher in stage-III than stage-II, but no significant difference was observed in the C-terminal fragment of CXCL16. Further, stimulation of the CXCR6/CXCL16 axis activated Src, FAK, ERK1/2, and PI3K signaling pathways, as per antibody microarray analysis, which also underlie CXCL16-induced F-actin polymerization. The CXCR6/CXCL16 axis induces cytoskeleton rearrangement facilitating migration and invasion and supports BrCa cell survival by activating the PI3K/Akt pathway. This study highlights the significance of the CXCR6/CXCL16 axis and ADAM10 as potential therapeutic targets for advanced-stage BrCa.

scholarly journals Immunomodulating nano-adaptors potentiate antibody-based cancer immunotherapy

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Cheng-Tao Jiang ◽  
Kai-Ge Chen ◽  
An Liu ◽  
Hua Huang ◽  
Ya-Nan Fan ◽  
...  
Keyword(s):  
T Cells ◽  
T Cell ◽  
Immune Responses ◽  
Cancer Immunotherapy ◽  
Tumor Cells ◽  
Noncovalent Interactions ◽  
Killer Cell ◽  
Antibody Immobilization ◽  
Effector Cells ◽  
Nanoparticle Surface

AbstractModulating effector immune cells via monoclonal antibodies (mAbs) and facilitating the co-engagement of T cells and tumor cells via chimeric antigen receptor- T cells or bispecific T cell-engaging antibodies are two typical cancer immunotherapy approaches. We speculated that immobilizing two types of mAbs against effector cells and tumor cells on a single nanoparticle could integrate the functions of these two approaches, as the engineered formulation (immunomodulating nano-adaptor, imNA) could potentially associate with both cells and bridge them together like an ‘adaptor’ while maintaining the immunomodulatory properties of the parental mAbs. However, existing mAbs-immobilization strategies mainly rely on a chemical reaction, a process that is rough and difficult to control. Here, we build up a versatile antibody immobilization platform by conjugating anti-IgG (Fc specific) antibody (αFc) onto the nanoparticle surface (αFc-NP), and confirm that αFc-NP could conveniently and efficiently immobilize two types of mAbs through Fc-specific noncovalent interactions to form imNAs. Finally, we validate the superiority of imNAs over the mixture of parental mAbs in T cell-, natural killer cell- and macrophage-mediated antitumor immune responses in multiple murine tumor models.

scholarly journals Deletion of FaeG alleviated Enterotoxigenic Escherichia coli F4ac-induced apoptosis in the intestine

AMB Express ◽  
2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Pengpeng Xia ◽  
Yunping Wu ◽  
Siqi Lian ◽  
Guomei Quan ◽  
Yiting Wang ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Clinical Symptoms ◽  
Mucosal Damage ◽  
Enterotoxigenic Escherichia Coli ◽  
Intestinal Epithelial ◽  
Antibody Microarray ◽  
E Coli ◽  
Fimbrial Subunit ◽  
Induced Apoptosis ◽  
Weaning Piglets

AbstractEnterotoxigenic Escherichia coli (ETEC) F4ac is a major constraint to the development of the pig industry, which is causing newborn and post-weaning piglets diarrhea. Previous studies proved that FaeG is the major fimbrial subunit of F4ac E. coli and efficient for bacterial adherence and receptor recognition. Here we show that the faeG deletion attenuates both the clinical symptoms of F4ac infection and the F4ac-induced intestinal mucosal damage in piglets. Antibody microarray analysis and the detection of mRNA expression using porcine neonatal jejunal IPEC-J2 cells also determined that the absence of FaeG subunit alleviated the F4ac promoted apoptosis in the intestinal epithelial cells. Thus, targeted depletion of FaeG is still beneficial for the prevention or treatment of F4ac infection.

scholarly journals Comparison of Different Blood Collection, Sample Matrix, and Immunoassay Methods in a Prenatal Screening Setting

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Jeroen L. A. Pennings ◽  
Jacqueline E. Siljee ◽  
Sandra Imholz ◽  
Sylwia Kuc ◽  
Annemieke de Vries ◽  
...  
Keyword(s):  
Prenatal Screening ◽  
Protein A ◽  
Correlation Coefficients ◽  
First Trimester ◽  
Dried Blood Spots ◽  
Maternal Blood ◽  
Blood Collection ◽  
Antibody Microarray ◽  
Sample Matrix ◽  
Finger Prick

We compared how measurements of pregnancy-associated plasma protein A (PAPP-A) and the free beta subunit of human chorionic gonadotropin (fβ-hCG) in maternal blood are influenced by different methods for blood collection, sample matrix, and immunoassay platform. Serum and dried blood spots (DBS) were obtained by venipuncture and by finger prick of 19 pregnant women. PAPP-A and fβ-hCG from serum and from DBS were measured by conventional indirect immunoassay on an AutoDELFIA platform and by antibody microarray. We compared methods based on the recoveries for both markers as well as marker levels correlations across samples. All method comparisons showed high correlations for both marker concentrations. Recovery levels of PAPP-A from DBS were 30% lower, while those of fβ-hCG from DBS were 50% higher compared to conventional venipuncture serum. The recoveries were not affected by blood collection or immunoassay method. The high correlation coefficients for both markers indicate that DBS from finger prick can be used reliably in a prenatal screening setting, as a less costly and minimally invasive alternative for venipuncture serum, with great logistical advantages. Additionally, the use of antibody arrays will allow for extending the number of first trimester screening markers on maternal and fetal health.

scholarly journals Simultaneous Bacillus anthracis Spores Detection via Aminated-Poly(vinyl chloride) Coated Piezoelectric Crystal Immunosensor

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Ali Oztuna ◽  
Hasan Nazir ◽  
Mehmet Baysallar
Keyword(s):  
Bacillus Anthracis ◽  
Vinyl Chloride ◽  
Quartz Crystal ◽  
Adhesive Layer ◽  
Antibody Immobilization ◽  
Potential Threat ◽  
Amine Functionalized ◽  
Poly Vinyl Chloride ◽  
Bacillus Anthracis Spores ◽  
Flow Through

Bacillus anthracis spores are a potential threat to countries in the context of biodefense. We have already seen the destructiveness of the anthrax attacks in the recent past. This study presents an aminated-poly(vinyl chloride) (PVC-NH2) coated quartz crystal microbalance (QCM) immunosensor for simultaneous rapid detection of B. anthracis spores. PVC-NH2, synthesized in the laboratory, was used as an adhesive layer for monoclonal antibody immobilization on gold quartz crystal. The prepared QCM sensor was tested using a pathogen field strain of B. anthracis (GenBank number: GQ375871.1) under static addition and flow through procedures with different spore concentrations. Fourier transform infrared spectroscopy (FTIR-ATR) and scanning electron microscopy (SEM) were performed to characterize the surface of the sensor during the modification. Furthermore, a series of SEM micrographs were taken in order to investigate surface morphology and show the presence of the B. anthracis spores on the surface. It is concluded that B. anthracis spores can be accomplished by using amine functionalized polymer coated QCM sensors without requiring complicated immobilization procedures or expensive preliminary preparations.

scholarly journals Modification of silicon nitride surfaces with GOPES and APTES for antibody immobilization: computational and experimental studies

2015 ◽  
Vol 6 (4) ◽  
pp. 045006 ◽  
Author(s):  
Thien Dien To ◽  
Anh Tuan Nguyen ◽  
Khoa Nhat Thanh Phan ◽  
An Thu Thi Truong ◽  
Tin Chanh Duc Doan ◽  
...  
Keyword(s):  
Silicon Nitride ◽  
Experimental Studies ◽  
Antibody Immobilization
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