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Sigma-Aldrich Scientific Seminars

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  • SygRNA™-Synthetic Two Part CRISPR RNA system SygRNA™-Synthetic Two Part CRISPR RNA system Dr. Gurpreet Singh Balrey- Global Technical Applications Manager at Merck Recorded: Nov 16 2016 58 mins
    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 and PAS Troubleshooting and Technical Advice H&E and PAS Troubleshooting and Technical Advice Ute Schmidt- Global Product Manager Microscopy at Merck Recorded: Nov 14 2016 62 mins
    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:
    •Troubleshooting
    •Technical tricks
    •How to prevent "critical situations"
  • New Guava and Muse Algae Kits for Flow Cytometry New Guava and Muse Algae Kits for Flow Cytometry Katherine Gillis- Sr. Research Scientist at MilliporeSigma Recorded: Nov 2 2016 39 mins
    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.
  • Multispectral Imaging Flow Cytometry: Illuminating T cell – APC Interactions Multispectral Imaging Flow Cytometry: Illuminating T cell – APC Interactions Haley R. Pugsley, Ph.D, Senior Scientist at MilliporeSigma Recorded: Oct 5 2016 56 mins
    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.
  • Pediatric Cancer and IHC Pediatric Cancer and IHC Jeff Gordon, Director of OEM Sales, Cell Marque Corporation Recorded: Sep 28 2016 68 mins
    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.
  • Quantitative Image Analysis and Emerging Applications on the ImageStream Quantitative Image Analysis and Emerging Applications on the ImageStream Brian Hall, Senior Scientist at Millipore Sigma Recorded: Sep 21 2016 56 mins
    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.
  • Skin Cancer and Immunohistochemistry Skin Cancer and Immunohistochemistry Jeff Gordon, Director OEM Sales - Cell Marque Corporation, Rocklin CA Recorded: Jun 22 2016 63 mins
    Skin cancer is by far the most prevalent cancer. Each year, approximately 3.4 million people in the US alone are diagnosed with some form of skin cancer. Skin cancer can be highly treatable if it is detected and classified early, and this detection and classification is often aided by immunohistochemistry. This presentation covers many of the basic science, facts, and statistics of skin cancer, as well as the utility of immunohistochemical testing with markers such as S-100, SOX-10, Ber-Ep4, and HHV-8 in the accurate diagnosis and survival rates of skin cancer. Continuing education credits for attending this webinar will be offered through the National Society of Histotechnology
  • Growing Cell Line Potential: From Lab To Licence S2 Growing Cell Line Potential: From Lab To Licence S2 Dr. Lily Chan, Cambridge Enterprise Recorded: Jun 9 2016 26 mins
    A scientific overview of the portfolio of cell lines University of Cambridge has deposited at ECACC with a focus on the KARPAS 299 and KARPAS 422 cell lines; the HeLa Mitotrap cell lines; and CHO cell lines. We will also provide an overview of the process of partnering with ECACC and Sigma-Aldrich for the storage and distribution of cell lines for research purposes. Topics include: The scientific applications of the cell lines; The types of companies and institutions we license to; Advantages of partnering with culture experts and specialised distributors; Our experience of working with ECACC and Sigma-Aldrich.
  • Growing Cell Line Potential: From Lab To Licence S1 Growing Cell Line Potential: From Lab To Licence S1 Dr. Lily Chan, Cambridge Enterprise Recorded: Jun 9 2016 24 mins
    A scientific overview of the portfolio of cell lines University of Cambridge has deposited at ECACC with a focus on the KARPAS 299 and KARPAS 422 cell lines; the HeLa Mitotrap cell lines; and CHO cell lines. We will also provide an overview of the process of partnering with ECACC and Sigma-Aldrich for the storage and distribution of cell lines for research purposes. Topics include: The scientific applications of the cell lines; The types of companies and institutions we license to; Advantages of partnering with culture experts and specialised distributors; Our experience of working with ECACC and Sigma-Aldrich.
  • Sample Preparation for Food Analysis- Part 3 Sample Preparation for Food Analysis- Part 3 Matthias Nold, Product Manager- Merck Recorded: May 27 2016 42 mins
    Part 3 of a 3-part presentation series about food analysis focused on sample preparation and including information about Reference Material