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WEBINAR: Measuring the Growth of Microbial Biofilms in Real-Time: Evidence, Insights and Applications
Alex Mira, Ph.D.
Center for Advanced Research in Public Health, FISABIO Foundation, Valencia (Spain)
In this webinar, we will:
- Provide an overview of how impedance-monitoring by xCELLigence instruments can be used to track the dynamics (attachment, growth, dissipation) of bacterial and fungal biofilms
- Validate the utility of the xCELLigence assay by comparing WT vs. mutant strains that are deficient in biofilm production, and by comparing the xCELLigence impedance signal with standard quantification methods such as safranin staining
- Analyze both single- and multi-species biofilms, with the goal of using xCELLigence plates as an in vitro model for complex human-associated biofilms
- Demonstrate the use of xCELLigence for anti-biofilm drug screening and antibiotic susceptibility testing, with comparison to the results obtained by traditional methods such as epsilon-tests
- Look at efforts to employ xCELLigence as a clinical theranostic tool for identifying the optimal treatment regimen for biofilm infections
About the speaker
Alex Mira obtained his Ph.D. in microbiology at Oxford University (UK) in 1999, and carried out post-doctoral research in the USA and Sweden working on microarray technology, microbial genomics, and bioinformatics. In 2003 he started his own research group studying oral microbiota using ‘omics’ techniques. In 2009, he was awarded the “Jaime Ferran” Spanish Award for Research in Microbiology. He is currently the principal investigator of the Oral Microbiome Laboratory at the CSISP, in Spain, where he has applied metagenomics, next-generation sequencing, and impedance technology to study the human microbiome and human-associated biofilms. His team has helped to pioneer use of the xCELLigence instrument for studying microbial biofilms, including applications such as: 1) discovering drugs that inhibit biofilm growth, 2) measuring antibiotic susceptibility in biofilm-mediated infections (i.e. clinical theranostics), and 3) developing an in vitro model of oral diseases.
Human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) are increasingly utilized in basic biology research, drug discovery applications, and for studies of disease mechanisms. The opportunity to measure the contractility, viability, and electrophysiology of hiPSC-CMs in real time over extended periods can provide researchers unique mechanistic insights into the roles cardiomyocytes play in both normal development and cardiac disease.
In this special webinar, scientists using hiPSC-CMs will describe new approaches aimed at enhancing assessment of hiPSC-CM functionality. The speakers will also discuss how these approaches can be used to explore compounds that modulate the force of cardiomyocyte contraction or to assess the safety and efficacy of drugs and drug combinations targeting cardiac tissue.
In this webinar, you will gain insights on:
- New instrumentation to assess cardiomyocyte contractility, viability, and electrophysiology
- Label-free, real-time techniques to assess the “beating” of cardiomyocytes as a biologically-relevant measure of cardiomyocyte function
- Use of electrical pacing for further maturation of cardiomyocytes
- Techniques to detect functional cardiotoxicity
In addition, you will also be able to ask your own specific questions of the speakers during a live question-and-answer session following the presentations.
Armando Lagrutta, PhD
Merck & Co. Inc.
Kristina Green, PhD
Patrick C.H. Lo, PhD
Dan MacLeod Ph.D.
Precision BioSciences, Inc.
Dr. MacLeod received his Ph.D. in Molecular Pathology and Biomedical Sciences from the University of California, San Diego (UCSD). He subsequently conducted postdoctoral research at the International AIDS Vaccine Initiative Neutralizing Antibody Center at the Scripps Research Institute. Dr. MacLeod is currently leading a group in Precision BioScience’s Cell Therapy Research team, focused on expanding the use of Precision’s propriety ARCUS gene-editing technology to engineer T cells for cancer therapy.
Adoptive cellular therapy using chimeric antigen receptor (CAR) T cells has produced significant responses in patients with CD19+ hematological malignancies. Most clinical trials to date have used autologous patient cells, which incur significant manufacturing challenges and costs and are not feasible for many patients with advanced disease state.
At Precision BioSciences, we have developed an allogeneic method using our proprietary ARCUS™ gene-editing technology to generate “universal” CAR T cells from healthy donors. These cells are engineered to eliminate expression of the endogenous T cell receptor making them safe for transfer to unrelated patients. By integrating the CAR transgene at a single genomic site, we can tightly control the level of CAR expression on the cell surface. We further optimize the cells by designing new CAR T constructs that include modifications to the extracellular binding domains as well as the intracellular signaling domains.
Evaluating the impact of these new modifications requires sensitive methods to assay CAR T cell function. Traditional methods for evaluating cytotoxicity cannot effectively predict in vivo activity of a CAR T product; this is because they assess short-term killing potential rather than the ability to expand, persist, and exhibit serial killing. We have used the ACEA xCELLigence instrument for both B Cell Killing Assays and Leukemic Cell Killing Assays to test multiple CAR constructs with modified ectodomains, endodomains, and other modifications, and we have found this platform sensitive enough to detect subtle yet significant differences in performance not observed in traditional killing assays. Furthermore, the sensitivity of the instrument has enabled us to evaluate CAR constructs using cell numbers that are orders of magnitude lower than other assays, greatly enhancing our throughput and capabilities.
For full video, watch above or click here.
Dr. Felix Bohne
Institute of Virology, German Research Center for Environmental Health, Helmholtz Zentrum München
Dr. Sarah K. Lamore
AstraZeneca Pharmaceuticals, Waltham, MA
Dr. Stuart Martin University of Maryland School of Medicine, Baltimore, MDBreast tumor stem cells that are circulating in the bloodstream can invade distant tissues and lie dormant for long periods of time. Reemergence of these disseminated stem cells as metastatic tumors is a primary cause of patient death. In this webinar…
Dr. Stephan Gabos University of Alberta, Edmonton, AB (Canada)Modern public health protection requires ongoing surveillance of environmental media (water, air, food and soil) for potentially harmful chemicals. There is currently an unmet need for in vitro toxicity assays with higher sensitivity, lower interference, and better…
Dr. Sandra N. Garcia Kinetic Concepts Inc., San Antonio, TXNegative Pressure Wound Therapy (NPWT), where a vacuum is applied to an acute or chronic wound, has proven extremely effective for promoting would healing. The success of NPWT lies in its ability to draw the edges of a wound together, to promote granulation,…
Dr. Keith L. Knutson
Mayo Clinic, Jacksonville, FL
The Vaccine & Gene Therapy Institute of Florida, Port Saint Lucie, FL
Dr. Melissa L. Fishel
Indiana University School of Medicine, Indianapolis, IN
Dr. Matthew F. Peters
AstraZeneca Pharmaceuticals, Boston, MA