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https://www.readbyqxmd.com/read/28335260/a-label-free-microelectrode-array-based-on-one-step-synthesis-of-chitosan-multi-walled-carbon-nanotube-thionine-for-ultrasensitive-detection-of-carcinoembryonic-antigen
#1
Huiren Xu, Yang Wang, Li Wang, Yilin Song, Jinping Luo, Xinxia Cai
Carcinoembryonic antigen (CEA) has been an extensively used tumor marker responsible for clinical early diagnosis of cervical carcinomas, and pancreatic, colorectal, gastric and lung cancer. Combined with micro-electro mechanical system (MEMS) technology, it is important to develop a novel immune microelectrode array (MEA) not only for rapid analysis of serum samples, but also for cell detection in vitro and in vivo. In this work, we depict a simple approach to modify chitosan-multi-walled carbon nanotubes-thionine (CS-MWCNTs-THI) hybrid film through one-step electrochemical deposition and the CS-MWCNTs-THI hybrid films are successfully employed to immobilize anti-CEA for fabricating simple, label-free, and highly sensitive electro-chemical immune MEAs...
July 11, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28332478/addressed-immobilization-of-biofunctionalized-diatoms-on-electrodes-by-gold-electrodeposition
#2
S Leonardo, D Garibo, M Fernández-Tejedor, C K O'Sullivan, M Campàs
Diatoms are single cell microalgae with a silica shell (frustule), which possess a micro/nanoporous pattern of unparalleled diversity far beyond the possibilities of current micro- and nanofabrication techniques. To explore diatoms as natural three-dimensional nanostructured supports in sensing and biosensing devices, a simple, rapid and stable method to immobilize diatoms via gold electrodeposition is described. In this process, gold microstructures are formed, immobilizing diatoms by entrapment or crossing their nanopores...
March 23, 2017: Biofabrication
https://www.readbyqxmd.com/read/28329638/developing-a-continuous-quality-improvement-assessment-using-a-patient-centered-approach-in-optimizing-sle-disease-control
#3
Katelyn Updyke, Brittany Urso, James A Solomon
Systemic lupus erythematous is a multi-organ autoimmune disease in which the patient has "lost" self- tolerance and developed immune-complexes containing self-antigen that cause disease through tissue inflammation and multi-organ damage. Patients often have unpredictable flares in symptoms with poorly identified triggers. However, it has been suggested in other literature that exogenous exposures, including ingested beef, cigarette smoke, UV radiation, metal-complexing agents, and infections can contribute to exacerbations and improvements in SLE symptoms...
September 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28323141/mechanistic-and-pharmacologic-insights-on-immune-checkpoint-inhibitors
#4
REVIEW
Randy F Sweis, Jason J Luke
The concept of augmenting the immune system to eradicate cancer dates back at least a century. A major resurgence in cancer immunotherapy has occurred over the past decade since the identification and targeting of negative regulators with antibody therapies to augment the anti-tumor immune response. Unprecedented responses across a broad array of cancer types elevated this class of therapies to the forefront of cancer treatment. The most successful drugs to date target the cytotoxic T-lymphocyte-associated antigen-4 (CTLA-4) and programmed cell death-1 (PD-1) pathways...
March 18, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28315717/exploring-novel-sero-epidemiological-tools-effect-of-different-storage-conditions-on-longitudinal-stability-of-microarray-slides-comprising-influenza-a-measles-and-streptococcus-pneumoniae-antigens
#5
Gudrun Freidl, Erwin de Bruin, Maarten Schipper, Marion Koopmans
In this study we evaluated the long-term stability of a microarray-based serological screening platform, containing antigens of influenza A, measles and Streptococcus pneumoniae, as part of a preparedness research program aiming to develop assays for syndromic disease detection. Spotted microarray slides were kept at four different storage regimes with varying temperature and humidity conditions. We showed that under the standard storage condition in a temperature-controlled (21°C) and desiccated environment (0% relative humidity), microarray slides remained stable for at least 22 months without loss of antigen quality, whereas the other three conditions (37°C, desiccated; Room temperature, non-desiccated; Frozen, desiccated) produced acceptable results for some antigens (influenza A, S...
March 15, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28315552/cancer-immunotherapy-an-evidence-based-overview-and-implications-for-practice
#6
Virginia Bayer, Beau Amaya, Diane Baniewicz, Colleen Callahan, Lisa Marsh, Asia S McCoy
BACKGROUND: Significant research progress has been made in immunotherapies since the mid-1990s, and this rapid evolution necessitates evidence-based education on immunotherapies, their pathophysiology, and their toxicities to provide safe, effective care.
. OBJECTIVES: The aim of this article is to provide an evidence-based overview, with implications for practice, of checkpoint inhibitors, monoclonal antibodies, oncolytic viral therapies, and chimeric antigen receptor T-cell therapies...
April 1, 2017: Clinical Journal of Oncology Nursing
https://www.readbyqxmd.com/read/28299695/development-of-novel-piezoelectric-biosensor-using-pzt-ceramic-resonator-for-detection-of-cancer-markers
#7
Li Su, Chi-Chun Fong, Pik-Yuan Cheung, Mengsu Yang
A novel biosensor based on piezoelectric ceramic resonator was developed for direct detection of cancer markers in the study. For the first time, a commercially available PZT ceramic resonator with high resonance frequency was utilized as transducer for a piezoelectric biosensor. A dual ceramic resonators scheme was designed wherein two ceramic resonators were connected in parallel: one resonator was used as the sensing unit and the other as the control unit. This arrangement minimizes environmental influences including temperature fluctuation, while achieving the required frequency stability for biosensing applications...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28297729/the-role-of-abo-blood-type-in-thrombosis-scoring-systems
#8
Massimo Franchini, Giuseppe Marano, Stefania Vaglio, Liviana Catalano, Simonetta Pupella, Giancarlo Maria Liumbruno
In addition to their major role in transfusion medicine, there is increasing evidence that ABO blood group antigens (complex carbohydrate molecules widely expressed on the surface of red blood cells and several other cell types) are implicated in the development of a wide array of pathologic conditions. In particular, intense research has been dedicated over the last 50 years to the study of the association between non-O blood type and the risk of developing cardiovascular disorders. Several pathways have been hypothesized to explain this relationship, the most reasonable implying the influence of the ABO blood group on circulating plasma levels of von Willebrand factor, factor VIII, and several inflammatory cytokines...
March 15, 2017: Seminars in Thrombosis and Hemostasis
https://www.readbyqxmd.com/read/28295717/genome-wide-association-study-of-cell-mediated-immune-response-in-chicken
#9
V Raeesi, A Ehsani, R V Torshizi, M Sargolzaei, A A Masoudi, R Dideban
Cell-mediated immunity (CMI) causes the intracellular destruction of the antigen or elimination of the host cell to make animals resistant against exogenous antigens and cancers. In this study, a genome-wide association study (GWAS) was carried out to identify genomic regions associated with CMI in chicken using chicken 60k high-density single nucleotide polymorphism (SNP) array. Genomic relationships were taken into account to adjust for population structure. In order to account for multiple testing, chromosome-wise false discovery rate was controlled at 5% and 10% levels...
March 10, 2017: Journal of Animal Breeding and Genetics, Zeitschrift Für Tierzüchtung und Züchtungsbiologie
https://www.readbyqxmd.com/read/28295553/serum-carcinoembryonic-antigen-specifically-increases-among-various-serum-markers-of-adenocarcinoma-in-hypohidrosis-or-conditions-related-to-hypohidrosis
#10
Masaru Honma, Hiroyoshi Nozaki, Hiroko Nagahata, Mizue Fujii, Takashi Shibuya, Kyoko Kanno, Masako Minami-Hori, Akemi Ishida-Yamamoto
Anhidrosis/hypohidrosis are conditions presenting various level of sweating dysfunction. Among them, acquired idiopathic generalized anhidrosis (AIGA) presents inadequate decrease or loss of sweating without apparent neurological and dermatological symptoms except cholinergic urticaria. Recently, serum level of carcinoembryonic antigen (CEA), one of the most well-known tumor markers, has been proposed as a clinical marker reflecting activity of AIGA. This study was performed to verify the specificity and independence of serum CEA level from the other serum tumor markers especially related to adenocarcinoma...
March 11, 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/28293262/transcriptome-profiling-of-il-17a-preactivated-mesenchymal-stem-cells-a-comparative-study-to-unmodified-and-ifn-%C3%AE-modified-mesenchymal-stem-cells
#11
Kisha Nandini Sivanathan, Darling Rojas-Canales, Shane T Grey, Stan Gronthos, Patrick T Coates
Human mesenchymal stem cells pretreatment with IL-17A (MSC-17) potently enhances T cell immunosuppression but not their immunogenicity, in addition to avidly promoting the induction of suppressive regulatory T cells. The aim of this study was to identify potential mechanisms by which human MSC-17 mediate their superior immunomodulatory function. Untreated-MSC (UT-MSC), IFN-γ treated MSC (MSC-γ), and MSC-17 were assessed for their gene expression profile by microarray. Significantly regulated genes were identified for their biological functions (Database for Annotation, Visualisation and Integrated Discovery, DAVID)...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28288672/profiling-and-validation-of-individual-and-patterns-of-chlamydia-trachomatis-specific-antibody-responses-in-trachomatous-trichiasis
#12
Harry Pickering, Sarah E Burr, Tamsyn Derrick, Pateh Makalo, Hassan Joof, Richard D Hayward, Martin J Holland
BACKGROUND: Ocular Chlamydia trachomatis (Ct) infection causes trachoma, the leading infectious cause of blindness. A Ct D/UW3 proteome microarray and sera from Gambian adults with trachomatous trichiasis (TT) or healthy matched controls previously identified several novel antigens, which suggested differential recognition in adults with TT. METHODS: We re-analysed this serological microarray data using more robust microarray analysis techniques accounting for typical problems associated with highly dimensional data...
March 13, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28288645/mesothelin-promotes-epithelial-to-mesenchymal-transition-and-tumorigenicity-of-human-lung-cancer-and-mesothelioma-cells
#13
Xiaoqing He, Liying Wang, Heimo Riedel, Kai Wang, Yong Yang, Cerasela Zoica Dinu, Yon Rojanasakul
BACKGROUND: Lung cancer and pleural mesothelioma are two of the most deadly forms of cancer. The prognosis of lung cancer and mesothelioma is extremely poor due to limited treatment modalities and lack of understanding of the disease mechanisms. We have identified mesothelin as a potentially unique therapeutic target that as a specific advantage appears nonessential in most cell types. Mesothelin (MSLN), a plasma membrane differentiation antigen, is expressed at a high level in many human solid tumors, including 70% of lung cancer and nearly all mesotheliomas...
March 14, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/28286864/in-vivo-expansion-of-melanoma-specific-t-cells-using-microneedle-arrays-coated-with-immune-polyelectrolyte-multilayers
#14
Qin Zeng, Joshua M Gammon, Lisa H Tostanoski, Yu-Chieh Chiu, Christopher M Jewell
Microneedles (MNs) are micron-scale polymeric or metallic structures that offer distinct advantages for vaccines by efficiently targeting skin-resident immune cells, eliminating injection-associated pain, and improving patient compliance. These advantages, along with recent studies showing therapeutic benefits achieved using traditional intradermal injections in human cancer patients, suggest MN delivery might enhance cancer vaccines and immunotherapies. We recently developed a new class of polyelectrolyte multilayers based on the self-assembly of model peptide antigens and molecular toll-like receptor agonists (TLRa) into ultrathin, conformal coatings...
February 13, 2017: ACS Biomaterials Science & Engineering
https://www.readbyqxmd.com/read/28284242/epstein-barr-virus-nuclear-antigen-1-interacts-with-regulator-of-chromosome-condensation-1-dynamically-throughout-the-cell-cycle
#15
Thibaut Deschamps, Quentin Bazot, Derek M Leske, Ruth MacLeod, Dimitri Mompelat, Lionel Tafforeau, Vincent Lotteau, Vincent Maréchal, George S Baillie, Henri Gruffat, Joanna B Wilson, Evelyne Manet
The Epstein-Barr virus (EBV) nuclear antigen 1 (EBNA1) is a sequence-specific DNA-binding protein that plays an essential role in viral episome replication and segregation, by recruiting the cellular complex of DNA replication onto the origin (oriP) and by tethering the viral DNA onto the mitotic chromosomes. Whereas the mechanisms of viral DNA replication are well documented, those involved in tethering EBNA1 to the cellular chromatin are far from being understood. Here, we have identified regulator of chromosome condensation 1 (RCC1) as a novel cellular partner for EBNA1...
February 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28284226/enhanced-susceptibility-of-triple-transgenic-alzheimer-s-disease-3xtg-ad-mice-to-acute-infection
#16
Rebecca Montacute, Kerry Foley, Ruth Forman, Kathryn Jane Else, Sheena Margaret Cruickshank, Stuart McRae Allan
BACKGROUND: Infection is a recognised risk factor for Alzheimer's disease (AD) and can worsen symptoms in established disease. AD patients have higher rates of infection and are more likely to require hospital admissions due to infections than individuals without dementia. Infections have also been found to increase the risk of those over 84 years of age being diagnosed with dementia. However, few studies have investigated immune responses to infection in AD. METHODS: Here, we investigated the immune responses of the triple transgenic Alzheimer's disease (3xTg-AD) mouse model of AD to infection with the parasites Toxoplasma gondii and Trichuris muris...
March 11, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28281872/novel-anti-sialyl-tn-monoclonal-antibodies-and-antibody-drug-conjugates-demonstrate-tumor-specificity-and-anti-tumor-activity
#17
Jillian M Prendergast, Ana Paula Galvao da Silva, David A Eavarone, Darius Ghaderi, Mai Zhang, Dane Brady, Joan Wicks, Julie DeSander, Jeff Behrens, Bo R Rueda
Targeted therapeutics that can differentiate between normal and malignant tumor cells represent the ideal standard for the development of a successful anti-cancer strategy. The Sialyl-Thomsen-nouveau antigen (STn or Sialyl-Tn, also known as CD175s) is rarely seen in normal adult tissues, but it is abundantly expressed in many types of human epithelial cancers. We have identified novel antibodies that specifically target with high affinity the STn glycan independent of its carrier protein, affording the potential to recognize a wider array of cancer-specific sialylated proteins...
February 22, 2017: MAbs
https://www.readbyqxmd.com/read/28281246/localized-surface-plasmon-resonance-lspr-coupled-fiber-optic-nanoprobe-for-the-detection-of-protein-biomarkers
#18
Jianjun Wei, Zheng Zeng, Yongbin Lin
Here is presented a miniaturized, fiber-optic (FO) nanoprobe biosensor based on the localized surface plasmon resonance (LSPR) at the reusable dielectric-metallic hybrid interface with a robust, gold nano-disk array at the fiber end facet. The nanodisk array is directly fabricated using electron beam lithography (EBL) and metal lift-off process. The free prostate-specific antigen (f-PSA) has been detected with a mouse anti-human prostate-specific antigen (PSA) monoclonal antibody (mAb) as a specific receptor linked with a self-assembled monolayer (SAM) at the LSPR-FO facet surfaces...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28265289/evaluating-wharton-s-jelly-derived-mesenchymal-stem-cell-s-survival-migration-and-expression-of-wound-repair-markers-under-conditions-of-ischemia-like-stress
#19
Iris Himal, Umesh Goyal, Malancha Ta
The efficacy of mesenchymal stem cell (MSC) therapy is currently limited by low retention and poor survival of transplanted cells as demonstrated by clinical studies. This is mainly due to the harsh microenvironment created by oxygen and nutrient deprivation and inflammation at the injured sites. The choice of MSC source could be critical in determining fate and cellular function of MSCs under stress. Our objective here was to investigate the influence of ischemia-like stress on Wharton's jelly MSCs (WJ-MSCs) from human umbilical cord to assess their therapeutic relevance in ischemic diseases...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28263760/integrating-genomics-and-proteomics-permits-identification-of-immunodominant-antigens-associated-with-drug-resistance-in-human-visceral-leishmaniasis-in-india
#20
Neeloo Singh, Shyam Sundar
Resistance of human pathogens like Leishmania to drugs is a growing concern where the multidrug-resistant phenotype renders chemotherapy ineffective. The acquired resistance of Leishmania to antimony has promoted intense research on the mechanisms involved but the question has not been resolved yet. In this study we have explored host-pathogen- drug interactions leading to identification of pharmacological determinants of host macrophages that resist the sodium antimony gluconate (SAG) mediated intracellular parasite killing...
March 3, 2017: Experimental Parasitology
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