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Mobility of Aeroallergens in Home: Effect of Location of Air Sampling and Implication for Evaluation of Patient Exposure
Julian Gordon1, Paul Detjen, Andrea Wachter & Prasanthi Gandhi1

The Inspirotec sampler permitted the easy testing of multiple locations within a household. Air sampling simultaneously at 12 locations by other technologies would have been technically challenging. These were run by an untrained operator.

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A Simple Plate Based Assay Using pH Sensor Dye to Screen for Internalizing Antibody
Nidhi Nath, Becky Godat, Cesear Corona, Chad Zimprich, Mark McDougall, Poncho Meisenheimer, Marjeta Urh

Receptor mediated internalization is a key mechanism of action (MOA) for antibody drug conjugates (ADCs). However, current methods of studying antibody internalization have several limitations including: 1) A multistep process not suitable for screening; 2) Low signal-to-background ratios; 3) Not suitable for kinetic measurements. We have developed a method that mitigates problems associated with traditional internalization assays.

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Better Cell-Based Assays for Anti-CTLA-4, Anti-PD-1/PD-L1, and Bispecific Immunotherapy Drug Studies
Richard Somberg, Mei Cong, Pete Stecha, Natasha Karassina, Jim Hartnett, Zhi-Jie Jey Cheng, and Frank Fan

Here we report the development of a panel of robust reporter assays to measure the potencies for biologics in immunotherapy. These assays reflect mode of action and can serve as valuable tools in immunotherapy drug development and discovery.

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Development of a Robust Reporter-based T cell Activation Assay for Therapeutic Biologics in Immunotherapy
Zhi-jie Jey Cheng, Pete Stecha, Jim Hartnett, Frank Fan, and Mei Cong

Jurkat T-cells stably expressing luciferase reporter driven by IL2 promoter or NFAT-RE, are used as effector cells. Tumor cell lines endogenously expressing cancer antigen are used as antigen presenting cells (APC). By co-cultivating the two cell lines in the presence of CD3 bispecific antibody, TCR/CD3 is activated in Jurkat effector cells. Luciferase activity is up regulated through IL-2 promoter or NFAT-RE activation.

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Reporter Bioassays to Assess Therapeutic Antibodies for Immunotherapy Programs
Mei Cong, Zhi-Jie Jey Cheng, Pete Stecha, Jun Wang, Jamison Grailer, Natasha Karassina, Jim Hartnett, and Frank Fan

Immunotherapy, also called biologic therapy or biotherapy, stimulates certain parts of the immune system to fight diseases such as cancer. Important drug targets in immunotherapy include: Co-inhibitory receptors, such as PD-1/PD-L1, CTLA-4, LAG3, Tim3; and co-stimulatory receptors, such as GITR, CD40, OX40, 4-1BB.
Current approaches to assaying these targets are cumbersome and variable. Here we offer an improved in vitro bioassay approach.

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Modelling CLL cell and T-cell Migration in a Dynamic Circulating Model of CLL
Elisabeth Walsbyl, Paul Brennan', Guy Pratte, Andrea Buggins3, Tanja N Hartmann'', Chris Fegan1 and Chris Pepper'

We have recently developed a novel circulating model of chronic lymphocytic leukaemia (CLL) that mimics the transient interactions that take place between circulating lymphocytes and vascular endothelium. Here we show that both normal and malignant lymphocytes actively underwent transendothelial migration.

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Quantification of Natural Killer Cell-Mediated Cytotixicity using Celigo Imaging Cytometry
Leo L. Chan, Srinivas S. Somanchi, Kelsey Rosbach, Dean A. Lee

Time-course tracking of % lysis eliminates multiple controls & the effect of non-uniform cell seeding in the final cytotoxicity calculation. The # of cells used is less than the cells needed for Release assays & Flow Cytometry. Flow cytometry & Release assays require a seeding density of 100K target cells increasing the number of effector cells to the millions. The visual observation of ADCC or CDC on the images can be convincing to conclude the functionality of antibodies or complements.

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Non-invasive Liquid Biopsy
Frauke Henjes1, Lise Aagaard1, Darren Ellis1, Hannah Lindstroem1, Morten Oksvold2,3, Axl Neurauter1, Ketil W. Pedersen1.

Paramagnetic Dynabeads® magnetic beads provide a versatile, automation friendly tool for fast sensitive and high throughput isolation that can be tailored to isolate specific circulating biomarkers such as cells, exosomes and nucleic acids.

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Novel culture medium using a small-molecule agonist of thrombopoetin receptor
Hondo M1; Nishino T2; Inamura M1

ReproHSC medium for the culture of hematopoietic stem cells. facilitates the culture and expansion of CD34+/CD38- cells that retain their HSC properties

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Flexible automated platform for blood group genotyping on DNA microarrays
S. Paris1, D. Rigal1, V. Barlet1, M. Verdier1, N. Coudurier2, P. Bailly3, J.-C. Brès1,4

The purpose of this project was to set up and validate a flexible robotic platform using 96-well DNA microarray for multiplex blood group genotyping.

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Scientific News
Can We Break the Link Between Obesity and Diabetes?
Columbia University researchers identify a key molecule involved in the development of type 2 diabetes.
Alzheimer’s Protein Serves as Natural Antibiotic
Alzheimer's-associated amyloid plaques may be part of natural process to trap microbes, findings suggest new therapeutic strategies.
Slime Mold Reveals Clues to Immune Cells’ Directional Abilities
Study from UC San Diego identifies a protein involved in the directional ability of a slime mold.
Supressing Intenstinal Analphylaxis in Peanut Allergy
Study from National Jewish Health shows that blockade of histamine receptors suppresses intestinal anaphylaxis in peanut allergy.
Getting a Better Look at How HIV Infects and Takes Over its Host Cells
A new approach, developed by a team of researchers led by The Rockefeller University and The Aaron Diamond AIDS Research Center (ADARC), offers an unprecedented view of how a virus infects and appropriates a host cell, step by step.
Untangling Disease-Related Protein Misfolding
Work advances understanding of genetic forms of thrombosis, emphysema, cirrhosis of the liver, neurodegenerative diseases and inflammation, among others.
Developing a More Precise Seasonal Flu Vaccine
During the 2014-15 flu season, the poor match between the virus used to make the world’s vaccine stocks and the circulating seasonal virus yielded a vaccine that was less than 20 percent effective.
Fighting Cancer with Borrowed Immunity
A new step in cancer immunotherapy: researchers from the Netherlands Cancer Institute and University of Oslo/Oslo University Hospital show that even if one's own immune cells cannot recognize and fight their tumors, someone else's immune cells might.
Loss Of Y Chromosome Increases Risk Of Alzheimer’s
Men with blood cells that do not carry the Y chromosome are at greater risk of being diagnosed with Alzheimer’s disease. This is in addition to an increased risk of death from other causes, including many cancers. These new findings by researchers at Uppsala University could lead to a simple test to identify those at risk of developing Alzheimer’s disease.
Immune Cells Remember Their First Meal
Scientists at the University of Bristol have identified the trigger for immune cells' inflammatory response – a discovery that may pave the way for new treatments for many human diseases.
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