The manner in which viral vaccines are produced in a biological system makes them vulnerable to microbial contamination. Considerable effort is expended to avoid such contamination and to detect it if it occurred. Is this effort warranted, efficient, scientifically sound, and rational? When asked for my opinion on these matters, I agreed to discuss the basis and historical context for why we do what we do and proffer opinion on what we might do instead or in addition, as we look forward to the inclusion of new strategies and methods in our arsenal. Being an advocate of the 3 R's policy, I invite a re-examination of the traditional in vivo methods in particular. I also advocate for a risk-based approach consistent with "Quality by Design" as a more scientific and rational means of addressing these issues. In the end, vaccinologists need to reassure the public that the vaccines they or their children receive are safe and pure and that all reasonable measures are taken to safeguard them.
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http://dx.doi.org/10.1016/j.vaccine.2013.03.023 | DOI Listing |
Stem Cell Rev Rep
January 2025
Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisboa, Portugal.
The discovery of induced pluripotent stem cells (iPSCs) and protocols for their differentiation into various cell types have revolutionized the field of tissue engineering and regenerative medicine. Developing manufacturing guidelines for safe and GMP-compliant final products has become essential. Allogeneic iPSCs-derived cell therapies are now the preferred manufacturing alternative.
View Article and Find Full Text PDFArch Razi Inst
June 2024
Razi Vaccine and Serum Research Institute, Agricultural Research Education and Extension Organization (AREEO), P.O. Box 31975-148, Karaj, Iran.
There is always a concern about the quality of cell-based products in terms of the contamination of the cells and their lack of efficiency. Therefore, it is of prime importance to ensure these cells' identity, purity, efficacy, and suitability for the production of biological products and diagnostic uses. Hence, cells must be identified, evaluated, documented, and stored to be used consistently and efficiently.
View Article and Find Full Text PDFChemSusChem
December 2024
PSI Center for Energy and Environmental Sciences, Paul Scherrer Institute, 5232, Villigen, Switzerland.
Solving the surface (electro-)chemical instability and the fading behavior of high voltage cathode materials cycled above 4.3 V vs Li/Li remains a major challenge for the next generation of high energy density Li-ion batteries. Here, we present a facile, environmentally friendly, cost effective and scalable method to address this problem by uniformly fluorinating the surface of cathode materials with a mild fluorinating agent (CHF) using a gas flow-type reactor.
View Article and Find Full Text PDFThe soles of staff shoes accessing vivaria can become contaminated on urban streets, potentially serving as a source of fomite-mediated transmission of adventitious agents to laboratory rodents. While shoe covers may mitigate this risk, donning them can lead to hand contamination. Staff accessing our vivaria use motor-driven shoe cleaners hundreds of times daily to remove and collect particulates via a vacuum collection system from the top, sole, and sides of shoes instead of shoe covers.
View Article and Find Full Text PDFNature
January 2025
Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA, USA.
Somatic alterations in the oncogenic kinase AKT1 have been identified in a broad spectrum of solid tumours. The most common AKT1 alteration replaces Glu17 with Lys (E17K) in the regulatory pleckstrin homology domain, resulting in constitutive membrane localization and activation of oncogenic signalling. In clinical studies, pan-AKT inhibitors have been found to cause dose-limiting hyperglycaemia, which has motivated the search for mutant-selective inhibitors.
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