Focusing on new / innovative technologies and industry challenges
The Life Science Business of Merck KGaA, Darmstadt, Germany Webinar Channel features scientific presentations from key specialists in analytical chemistry, biology, chemistry and life sciences on the practical and technical aspects of new developments and innovations, to help advance your research.
Emanuela Gionfriddo, Ph.D.; Research Associate under Prof. Janusz Pawliszyn, University of Waterloo (ON, Canada)
For the past two decades, Solid Phase Microextraction (SPME) has represented a convenient alternative to conventional sample prep procedures. SPME allows the simultaneous extraction and enrichment of analytes of interest from a given matrix in a single step while avoiding, or drastically minimizing, the use of organic solvents and time-consuming cleanup procedures.
Like any other analytical method, the various parameters governing the SPME process need to be carefully optimized in order to achieve robustness and sensitivity. However, certain aspects of SPME method development are often overlooked by many users, leading to unsatisfactory performance of the technique.
This webinar will shed light into several aspects of SPME method development. The presentation will include a theoretical explanation of SPME fundamentals and practical suggestions to overcome common errors and bias encountered when using SPME.
The webinar is divided in three main sections: 1) optimization of extraction conditions 2) matrix modifications 3) optimization of desorption conditions for gas and liquid chromatography. Each section is divided in various subsections dedicated to each parameter affecting the performance of the SPME technique. The webinar attendees will be guided through comprehensive understanding of the technology and the critical parameters that influence the extraction process with practical examples from already existing methods.
Lung cancer is the most commonly diagnosed non-skin cancer in the United States. Each year, over 222,000 people are diagnosed with lung cancer, and over 150,000 succumb each year to the illness, making it also the deadliest cancer in the country. With constant advancement of treatment options, the importance of accurate diagnosis and detection of lung cancer becomes more and more relevant to the survival of the patient. Immunohistochemistry has served as the catalyst for these advancements in lung cancer diagnosis. This presentation covers many of the basic science, facts, and statistics of lung cancer, as well as the utility of immunohistochemical testing with markers such as TTF-1, napsin A, desmoglein-3, and p40 in the accurate diagnosis and survival rates of lung cancer.
In typical analytical workflows, sample preparation accounts for over 60% of the time taken to generate results and 30% of any errors generated. To help analytical chemists maintain the cornerstones of all analytical processes, namely; speed, specificity, sensitivity, and reproducibility, considerable resources have been devoted to the development of new and unique technologies in the sample preparation field. With specific reference to solid phase extraction and solid phase microextraction, this presentation will outline new technologies and techniques developed in sample preparation for food analysis.
CRISPR Cas9 nucleases have revolutionized the field of gene editing and high-throughput lentiviral screens continue to hold ever-increasing promise for both basic research and development of future therapies to benefit human health. Even with such powerful technologies at hand, researchers new to the field may find the screening of multiple targets to be challenging and time-consuming. This webinar discusses the Evotec partnership with Life Science Business of Merck KGaA, Darmstadt, Germany and the screening services for drug discovery.
As you are aware, Triton will soon be included in the Authorization list (Annex XIV) of REACh. In order to continue to supply this material, we need some detailed information from you. In anticipation of your questions, we are hosting a webinar to answer as many of these queries as we can.
The CRISPR/Cas genome editing system has revolutionized almost every aspect of the life science industry. Until recently, the most used formats for this technology have been plasmids, mRNA, or lentivirus. Each reagent has been successful in its own right, however, each approach has limitations. SygRNATM, the two-part synthetic crRNA and tracrRNA, increases the pace of research, decreases costs, and can be used with Cas9 protein, Cas9 mRNA and Cas9 expressing cells/models.
This webinar discusses the development of the SygRNATM system, protocol optimization, and proposes workflows that enable scientists to quickly incorporate CRISPR technologies into their research.
H&E is the most frequently used stain in histology and is the basis for diagnostics and further selected methods. Thus it is important to have brilliant staining. We will show which minor factors can give a negative effect or spoil the result completely. Tips will be given on improving the sensitivity of the stain. For PAS, we will give advice on how to avoid common errors and always get colourful results.
We will discuss:
•How to prevent "critical situations"
In research areas such as academic, biofuel, food and pharmaceutical industries the determination of algal viability, lipid content, and cell concentration is important in the selection, monitoring, and maintenance of algal cultures. Flow cytometry has been shown to be an ideal method to assess health and lipid content of cultures but has been challenging to adopt due to high complexity and cost of traditional technologies. In this webinar, we present novel simplified methods for algal characterization using microcapillary cytometry on either a simple touch screen based cytometer, the Muse® Cell Analyzer, or a higher throughput cytometric platform, the compact Guava® easyCyte platforms. The MilliporeSigma algae kits utilize simple mix and read protocols, dedicated software modules, and provide quick results for the of count and viability measurements or relative lipid content on algae strains. The optimized and dedicated algae kits allow for high precision and comparable results to predicate methods. Data from applications to multiple common algal strains such as Chlorella vulgaris and Chlamydomonas reinhardti under different culture conditions will be presented. Availability of dedicated kits for algae research on simple and easy to use cytometric platforms will empower and enable algae researchers to rapidly select optimal culture conditions and strains for downstream experiments.
Interaction between antigen-specific T cells and antigen presenting cells (APC) cognate ligand involve reorganization of the cytoskeleton and recruitment of adhesive and signaling molecules to the site of intercellular contact. Sustained adhesion of T cells to APCs and formation of the immunological synapse after T cell receptor stimulation are required for the antigen-specific response. One way to measure an immunological synapse is by fluorescently labeling the molecules that have been recruited to the synapse and imaging by fluorescence microscopy. However, immunological synapses are rare and therefore difficult to analyze objectively and statistically by traditional microscopy methods. To overcome these problems, we employed the Amnis brand imaging flow cytometers to objectively collect imagery of large numbers of cells. We report the percentage of T cells involved in an organized immunological synapse, the recruitment of adhesion molecule LFA-1 and signaling molecule Lck to the synaptic complex and subsequent translocation of NFkB from the cytoplasm to the nucleus in the T cell. In this study, Raji B cells loaded with Staphylococcal enterotoxin B (SEB) were incubated with human T cells to create T cell-APC conjugates. Cells were stained in various combinations for CD3, CD19, Actin, LFA-1, Lck and NFkB. Results from the FlowSight and the ImageStream imaging flow cytometers are compared. Using the FlowSight imaging flow cytometer we demonstrate image-based parameters that were used to assess the frequency of conjugates with an organized immunological synapse in an objective and statistically significant manner. Employing the ImageStream imaging flow cytometer we further evaluate the specific location of the adhesion and signaling molecules LFA-1 and Lck within the immunological synapse complex in T cells and measure the nuclear localization of NFkB in the T cell.
Childhood cancer and pediatric cancer are general terms used to describe a wide range of neoplasms found in children and teenagers. Occurring in approximately 1 in 300 people under the age of 20, compared to 1 in 6 adults, pediatric cancers are more rare than adult cancers. Because less is known about pediatric cancers, diagnosis can be quite challenging for pathologists.
This presentation covers the basic science, as well as facts and statistics about pediatric cancer. We will discuss how the utility of immunohistochemical testing along with the application of novel antibodies can contribute to accurate diagnosis and survival rates of pediatric cancer patients.
The ImageStream® and FlowSight® are multispectral imaging flow cytometers that generates high resolution images of cells at a rate of 1000’s of cells per second. This allows for the rapid acquisition of tens of thousands of images per sample. Using the IDEAS® image analysis software, the system calculates features based not only on fluorescence intensity but the morphology of that fluorescence as well. This novel approach is able to seamlessly combine the quantitative power of flow cytometry with the high content information associated with microscopy. The system can collect data on a wide range of applications including nuclear localization during a signal transduction cascade, measuring colocalization of two probes, or quantify features on the phagocytosed particles in macrophages.