keyword
MENU ▼
Read by QxMD icon Read
search

igg1

keyword
https://www.readbyqxmd.com/read/28526622/9-cis-retinoic-acid-modulates-the-type-i-allergic-immune-response
#1
Guido Heine, Tim Hollstein, Sandra Treptow, Andreas Radbruch, Margitta Worm
BACKGROUND: Vitamin A is a potent regulator of adaptive immunity. The impact of the endogenous metabolite 9-cis retinoic acid (9cRA) on allergic sensitization is unknown. OBJECTIVE: To investigate whether and to what extent 9cRA modulates the humoral immune response. METHODS: BALB/c mice were sensitized and challenged with ovalbumin (OVA). 9cRA was applied repeatedly together with the antigen. Immunoglobulin production and cellular analysis were performed by ELISA, ELISPOTs and flow-cytometry...
May 16, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28526063/targeting-the-cxcr4-pathway-using-a-novel-anti-cxcr4-igg1-antibody-pf-06747143-in-chronic-lymphocytic-leukemia
#2
Manoj K Kashyap, Carlos I Amaya-Chanaga, Deepak Kumar, Brett Simmons, Nanni Huser, Yin Gu, Max Hallin, Kevin Lindquist, Rolla Yafawi, Michael Y Choi, Ale-Ali Amine, Laura Z Rassenti, Cathy Zhang, Shu-Hui Liu, Tod Smeal, Valeria R Fantin, Thomas J Kipps, Flavia Pernasetti, Januario E Castro
BACKGROUND: The CXCR4-CXCL12 axis plays an important role in the chronic lymphocytic leukemia (CLL)-microenvironment interaction. Overexpression of CXCR4 has been reported in different hematological malignancies including CLL. Binding of the pro-survival chemokine CXCL12 with its cognate receptor CXCR4 induces cell migration. CXCL12/CXCR4 signaling axis promotes cell survival and proliferation and may contribute to the tropism of leukemia cells towards lymphoid tissues and bone marrow...
May 19, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28517957/novel-drug-and-soluble-target-tolerant-antidrug-antibody-assay-for-therapeutic-antibodies-bearing-the-p329g-mutation
#3
Uwe Wessels, Eginhard Schick, Mirko Ritter, Frank Kowalewsky, Julia Heinrich, Kay Stubenrauch
AIM: Bridging immunoassays for detection of antidrug antibodies (ADAs) are typically susceptible to high concentrations of residual drug. Sensitive drug-tolerant assays are, therefore, needed. MATERIALS & METHODS: An immune complex assay to detect ADAs against therapeutic antibodies bearing Pro329Gly mutation was established. The assay uses antibodies specific for the Pro329Gly mutation for capture and human soluble Fcγ receptor for detection. RESULTS: When compared with a bridging assay, the new assay showed similar precision, high sensitivity to IgG1 ADA and dramatically improved drug tolerance...
May 18, 2017: Bioanalysis
https://www.readbyqxmd.com/read/28516859/recombinant-esterase-from-corynebacterium-pseudotuberculosis-in-dna-and-subunit-recombinant-vaccines-partially-protects-mice-against-challenge
#4
Alexandre Antunes Brum, Andrea de Fatima Silva Rezende, Francisco Silvestre Brilhante, Thais Collares, Karine Begnine, Fabiana Kommling Seixas, Tiago Veiras Collares, Odir Antônio Dellagostin, Vasco Azevedo, Anderson Santos, Ricardo Wagner Portela, Sibele Borsuk
PURPOSE: We tested the efficacy of the esterase encoded by cp1002_RS09720 from Corynebacteriumpseudotuberculosis in recombinant subunit and DNA caseous lymphadenitis (CLA) vaccines. This target was predicted as one of the best CLA vaccine candidates by mature epitope density analysis. METHODOLOGY: Gene cp1002_RS09720 was cloned into two different vectors (pAE for subunit vaccine and pTARGET for DNA vaccine). Four groups of 15 mice each were immunized with the recombinant esterase rCP09720 associated with aluminium hydroxide adjuvant (G1), pTARGET/cp09720 DNA vaccine (G2), a naked pTARGET (G3) or PBS as a negative control (G4)...
May 18, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28516782/exploring-site-specific-n-glycosylation-of-hek293-and-plant-produced-human-iga-isotypes
#5
Kathrin Göritzer, Daniel Maresch, Friedrich Altmann, Christian Obinger, Richard Strasser
The full potential of recombinant Immunoglobulin A as therapeutic antibody is not fully explored, owing to the fact that structure-function relationships of these extensively glycosylated proteins are not well understood. Here, monomeric IgA1, IgA2m(1) and IgA2m(2) variants of the anti-HER2 antibody (IgG1) trastuzumab were expressed in glyco-engineered Nicotiana benthamiana plants and in human HEK293-6E cells. All three IgA isotypes were purified and subjected to biophysical and biochemical characterization...
May 18, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28515723/different-somatic-hypermutation-levels-among-antibody-subclasses-disclosed-by-a-new-next-generation-sequencing-based-antibody-repertoire-analysis
#6
Kazutaka Kitaura, Hiroshi Yamashita, Hitomi Ayabe, Tadasu Shini, Takaji Matsutani, Ryuji Suzuki
A diverse antibody repertoire is primarily generated by the rearrangement of V, D, and J genes and subsequent somatic hypermutation (SHM). Class-switch recombination (CSR) produces various isotypes and subclasses with different functional properties. Although antibody isotypes and subclasses are considered to be produced by both direct and sequential CSR, it is still not fully understood how SHMs accumulate during the process in which antibody subclasses are generated. Here, we developed a new next-generation sequencing (NGS)-based antibody repertoire analysis capable of identifying all antibody isotype and subclass genes and used it to examine the peripheral blood mononuclear cells of 12 healthy individuals...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28512353/favorable-response-to-long-term-nucleos-t-ide-analogue-therapy-in-hbeag-positive-patients-with-high-serum-fucosyl-agalactosyl-igg
#7
Cheng-Hsun Ho, Hung-Wen Tsai, Chen-Yeh Lee, Li-Juan Huang, Rong-Nan Chien, I-Chin Wu, Yen-Cheng Chiu, Wen-Chun Liu, Pin-Nan Cheng, Ting-Tsung Chang, Shu-Hui Chen
Aberrant IgG glycosylation is a feature of hepatitis B virus (HBV) infection but its effect on a long-term efficacy of antiviral therapy has never been addressed. After a screening of 1,085 patients, 132 eligible HBV e antigen (HBeAg)-positive and 101 HBeAg-negative patients with anti-HBV nucleos(t)ide analogue monotherapy were enrolled with on-treatment follow-ups for at least one year. IgG1 N-glycome was profiled using mass spectrometry and evaluated for its relevance in treatment responses. The results indicated that a high level of serum fucosyl-agalactosyl IgG1 (IgG1-G0F) at baseline was associated with the severity of liver inflammation and damage but advanced treatment responses, including HBV DNA loss, HBeAg seroconversion, a reduced drug resistance rate, and a liver histological improvement at year 1, thereby improving the long-term treatment efficacy and the probability of treatment discontinuation in HBeAg-positive patients...
May 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28511994/study-of-rubella-candidate-vaccine-based-on-a-structurally-modified-plant-virus
#8
Ekaterina A Trifonova, Vladimir A Zenin, Nikolai A Nikitin, Maria S Yurkova, Ekaterina M Ryabchevskaya, Egor V Putlyaev, Ekaterina K Donchenko, Olga A Kondakova, Alexey N Fedorov, Joseph G Atabekov, Olga V Karpova
A novel rubella candidate vaccine based on a structurally modified plant virus - spherical particles (SPs) - was developed. SPs generated by the thermal remodelling of the tobacco mosaic virus are promising platforms for the development of vaccines. SPs combine unique properties: biosafety, stability, high immunogenicity and the effective adsorption of antigens. We assembled in vitro and characterised complexes (candidate vaccine) based on SPs and the rubella virus recombinant antigen. The candidate vaccine induced a strong humoral immune response against rubella...
May 13, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28509786/igg4-related-disease-of-the-biliary-tract-and-pancreas-clinical-and-experimental-advances
#9
Lowiek M Hubers, Ulrich Beuers
PURPOSE OF REVIEW: IgG4-related disease (IgG4-RD) is an immune-mediated disease of unknown cause. It predominantly affects the biliary tract [IgG4-associated cholangitis (IAC)] and pancreas [autoimmune pancreatitis (AIP)] of mostly elderly men. Accurate diagnostic tests are lacking. Patients benefit from predniso(lo)ne treatment. However, disease relapse is often seen. This review will address pathophysiological aspects and advances in diagnostic and therapeutic strategies. RECENT FINDINGS: The role of IgG1 and IgG4 in the pathophysiology of IgG4-RD was studied in mice which showed more intense organ damage of pancreas and salivary glands when IgG1 rather than IgG4 of patients with IgG4-RD was injected...
May 13, 2017: Current Opinion in Gastroenterology
https://www.readbyqxmd.com/read/28506316/characterization-of-novel-omp31-antigenic-epitopes-of-brucella-melitensis-by-monoclonal-antibodies
#10
Jinfeng Li, Feihuan Hu, Shouyi Chen, Peifang Luo, Zuoping He, Wenjing Wang, Jean-Pierre Allain, Chengyao Li
BACKGROUND: Brucellosis is a severe zoonotic disease worldwide. Detection and identification of Brucella species are essential to prevent or treat brucellosis in humans and animals. The outer membrane protein-31 (Omp31) is a major protein of Brucellae except for B. abortus, while the Omp31 antigenic epitopes have not been extensively characterized yet. RESULTS: A total of 22 monoclonal antibodies (mAbs) were produced against Omp31 of Brucella (B.) melitensis, of which 13 recognized five linear epitopes, 7 reacted with semi-conformational epitopes and 2 reacted with conformational epitopes, respectively...
May 15, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28506291/targeting-cd22-with-the-monoclonal-antibody-epratuzumab-modulates-human-b-cell-maturation-and-cytokine-production-in-response-to-toll-like-receptor-7-tlr7-and-b-cell-receptor-bcr-signaling
#11
Natalia V Giltiay, Geraldine L Shu, Anthony Shock, Edward A Clark
BACKGROUND: Abnormal B-cell activation is implicated in the pathogenesis of autoimmune diseases, including systemic lupus erythematosus (SLE). The B-cell surface molecule CD22, which regulates activation through the B-cell receptor (BCR), is a potential target for inhibiting pathogenic B cells; however, the regulatory functions of CD22 remain poorly understood. In this study, we determined how targeting of CD22 with epratuzumab (Emab), a humanized anti-CD22 IgG1 monoclonal antibody, affects the activation of human B-cell subsets in response to Toll-like receptor 7 (TLR7) and BCR engagement...
May 15, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28504613/chlpmab-23-cancer-specific-human-mouse-chimeric-anti-podoplanin-antibody-exhibits-antitumor-activity-via-antibody-dependent-cellular-cytotoxicity
#12
Mika K Kaneko, Takuro Nakamura, Akiko Kunita, Masashi Fukayama, Shinji Abe, Yasuhiko Nishioka, Shinji Yamada, Miyuki Yanaka, Noriko Saidoh, Kanae Yoshida, Yuki Fujii, Satoshi Ogasawara, Yukinari Kato
Podoplanin is expressed in many cancers, including oral cancers and brain tumors. The interaction between podoplanin and its receptor C-type lectin-like receptor 2 (CLEC-2) has been reported to be involved in cancer metastasis and tumor malignancy. We previously established many monoclonal antibodies (mAbs) against human podoplanin using the cancer-specific mAb (CasMab) technology. LpMab-23 (IgG1, kappa), one of the mouse anti-podoplanin mAbs, was shown to be a CasMab. However, we have not shown the usefulness of LpMab-23 for antibody therapy against podoplanin-expressing cancers...
May 15, 2017: Monoclonal Antibodies in Immunodiagnosis and Immunotherapy
https://www.readbyqxmd.com/read/28502017/comparative-analysis-of-immune-effects-in-mice-model-clonorchis-sinensis-cysteine-protease-generated-from-recombinant-escherichia-coli-and-bacillus-subtilis-spores
#13
Zhanshuai Wu, Zeli Tang, Mei Shang, Lu Zhao, Lina Zhou, Xiangzhan Kong, Zhipeng Lin, Hengchang Sun, Tingjin Chen, Jin Xu, Xuerong Li, Yan Huang, Xinbing Yu
Clonorchiasis remains a nonnegligible public health problem in endemic areas. Cysteine protease of Clonorchis sinensis (CsCP) plays indispensable roles in the parasitic physiology and pathology, and has been exploited as a promising drug and vaccine candidate. In recent years, development of spore-based vaccines against multiple pathogens has attracted many investigators' interest. In previous studies, the recombinant Escherichia coli (BL21) and Bacillus subtilis spores expressing CsCP have been successfully constructed, respectively...
May 13, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28501765/enhanced-sublingual-immunotherapy-by-tat-fused-recombinant-allergen-in-a-murine-rhinitis-model
#14
Farhad Salari, Fatemeh Vahedi, Abdol-Reza Varasteh, Hanieh Ketabdar, Jamshidkhan Chamani, Mojtaba Sankian
Allergen-specific sublingual immunotherapy (SLIT) is well known as an effective and non-invasive route to induce allergy desensitization. The goal of this study was to investigate whether a TAT-fused recombinant allergen could enhance SLIT efficacy. BALB/c mice sensitized to the main allergen (Che a 3) of Chenopodium album pollen were treated sublingually either with rChe a 3 (100μg/dose) or rTAT-Che a 3 (100μg/dose), two times per week for eight weeks. SLIT with rTAT-Che a 3 led to significantly greater allergen-specific IgG2a than rChe a 3; however, neither rTAT-Che a 3 nor rChe a 3 affected allergen-specific IgE or IgG1 antibody levels...
May 11, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28499720/t-follicular-helper-and-th2-cells-in-allergic-responses
#15
REVIEW
Masato Kubo
IL-4 is a cytokine commonly secreted by TH2 and follicular helper T (TFH) cells after antigenic sensitization. TH2 cells have been thought to be the major contributor of B cell help as a source of IL-4 responsible for class switch recombination to Immunoglobulin G1 (IgG1) and Immunoglobulin E (IgE). Importantly, there are some differences in transcriptional regulation between these two T cell subsets. The IL-4 production by TH2 and TFH cells is distinctively regulated by two pathways, GATA-3-mediated Il4-HS2 enhancer and Notch mediated Il4-CNS-2 enhancer...
May 9, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/28499403/surface-displaying-of-swine-igg1-fc-enhances-baculovirus-vectored-vaccine-efficacy-by-facilitating-viral-complement-escape-and-mammalian-cell-transduction
#16
Zehui Liu, Yangkun Liu, Yuanyuan Zhang, Yajuan Yang, Jingjing Ren, Xiaoying Zhang, Enqi Du
Baculovirus-mediated gene transfer has been developed as a vaccine design strategy against a number of diseases without apparent viral replication. However, it has been hampered by complement-dependent inactivation, thus hindering the in vivo application of baculovirus. A variety of approaches have been exploited to bypass the complement system in the serum. In this study, we constructed and screened a series of baculovirus vectors displaying complement interfering factors, of which a baculovirus vector displaying swine IgG1 Fc (pFc) showed the highest complement antagonism (75...
May 12, 2017: Veterinary Research
https://www.readbyqxmd.com/read/28494800/somatic-extracts-of-marshallagia-marshalli-downregulate-the-th2-associated-immune-responses-in-ovalbumin-induced-airway-inflammation-in-balb-c-mice
#17
Sima Parande Shirvan, Azadeh Ebrahimby, Arezoo Dousty, Mohsen Maleki, Ahmadreza Movassaghi, Hassan Borji, Alireza Haghparast
BACKGROUND: Recently the role of gastrointestinal nematodes in modulating the immune responses in inflammatory and immune-mediated conditions such as allergy and autoimmune diseases has been introduced. This is mainly due to the suppressive effects of somatic and excretory secretory (ES) products of nematodes on the immune responses. In this study, we evaluated the immunomodulatory potentials of somatic products of Marshallagia marshalli, a gastrointestinal nematodes of sheep, to suppress the immune-mediated responses in a murine model of allergic airway inflammation...
May 12, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28494339/application-of-protein-a-modified-capillary-channeled-polymer-polypropylene-fibers-to-the-quantitation-of-igg-in-complex-matrices
#18
Hung K Trang, R Kenneth Marcus
Polypropylene (PP) capillary-channeled polymer (C-CP) fibers loaded with recombinant Staphyloccocus aureus protein A (rSPA) were used as an affinity chromatography stationary phase for the quantitation of immunoglobulin G (IgG) in complex biological matrices. Optimization of the chromatographic method regarding mobile phase components and load/elution conditions was performed. The six-minute analysis, including a load step with 12mM phosphate at pH 7.4, an elution step with 0.025% phosphoric acid and a re-equilibration step, was employed for quantitation of IgG1 from 0...
April 22, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28493367/granulocyte-macrophage-colony-stimulating-factor-a-potent-adjuvant-for-polarization-to-th-17-pattern-an-experience-on-hiv-1-vaccine-model
#19
Mehdi Mahdavi, Amir Hossein Tajik, Massoumeh Ebtekar, Roghieh Rahimi, Mohammad Mehdi Adibzadeh, Hamid Reza Moozarmpour, Mohammad Sadegh Beikverdi, Soophie Olfat, Zuhair Mohammad Hassan, Mohammad Choopani, Morteza Kameli, Christine Hartoonian
Cytokines are mediators for polarization of immune response in vaccines. Studies show that co-immunization of DNA vaccines with granulocyte-macrophage colony-stimulating factor (GM-CSF) can increase immune responses. Here, experimental mice were immunized with HIV-1tat/pol/gag/env DNA vaccine with GM-CSF and boosted with recombinant vaccine. Lymphocyte proliferation with Brdu and CTL activity, IL-4, IFN-γ, IL-17 cytokines, total antibody, and IgG1 and IgG2a isotypes were assessed with ELISA. Results show that GM-CSF as adjuvant in DNA immunization significantly increased lymphocyte proliferation and IFN-γ cytokines, but CTL response was tiny increased...
May 11, 2017: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/28493123/cloning-of-single-chain-antibody-variants-by-overlap-extension-pcr-for-evaluation-of-antibody-expression-in-transient-gene-expression
#20
Patrick Mayrhofer, Renate Kunert
Single-chain fragment variable-fragment crystallizable antibody constructs (scFv-Fc) are homodimeric proteins representing valuable alternatives to heterotetrameric full-length IgG molecules to study protein properties and product-dependent cellular behavior. In contrast to naturally occurring antibodies, these artificial molecules are assembled from functional antibody domains to reduce molecule complexity and enhance antibody expression levels. The scFv-Fc format retains critical antibody functions such as antigen binding affinity and antibody effector functions...
2017: Methods in Molecular Biology
keyword
keyword
111034
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"