2014
DOI: 10.1016/j.jviromet.2013.10.017
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Use of hollow fiber tangential flow filtration for the recovery and concentration of HIV virus-like particles produced in insect cells

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Cited by 47 publications
(42 citation statements)
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“…The cell density increased during the concentration step, from an initial concentration of 1.6 × 10 6 cells mL −1 at harvest to a concentration of 14 × 10 6 cells mL −1 (10x concentration) in a volume of 1 L (Fig. Another recent report on HIV-based VLP clarification and concentration by HF-CFF demonstrated that using a narrower pore size of 0.45 μm and a shear rate of 5000 s −1 resulted in fluxes of about 10 LMH, with resulting low TMPs and good recovery of viable cells [28]. Of relevance is that the cell viability was maintained at approximately 68% over the concentration step, with a slight decrease to 60% after DF with 3 DVs.…”
Section: Hf-cff Clarificationmentioning
confidence: 92%
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“…The cell density increased during the concentration step, from an initial concentration of 1.6 × 10 6 cells mL −1 at harvest to a concentration of 14 × 10 6 cells mL −1 (10x concentration) in a volume of 1 L (Fig. Another recent report on HIV-based VLP clarification and concentration by HF-CFF demonstrated that using a narrower pore size of 0.45 μm and a shear rate of 5000 s −1 resulted in fluxes of about 10 LMH, with resulting low TMPs and good recovery of viable cells [28]. Of relevance is that the cell viability was maintained at approximately 68% over the concentration step, with a slight decrease to 60% after DF with 3 DVs.…”
Section: Hf-cff Clarificationmentioning
confidence: 92%
“…The shear rate was set to about 4500 s −1 , the recirculation flow rate to 4 L min −1 , and the TMP was kept between 0.7 and 0.8 bar [2]. This is an acceptable process time for such a concentration step [2, 28,36]. S3).…”
Section: Hf-cff Uf/dfmentioning
confidence: 99%
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“…Esta técnica consiste en realizar una serie de filtrados en membranas millipore de distinto tamaño, dirigiendo la muestra a un filtro de flujo tangencial por medio de una bomba peristáltica de alta presión, produciendo dos fracciones, la filtrada de interés y la excluida por el filtro [7]. Posteriormente, se realiza una segunda ultrafiltración, de donde se obtiene el filtrado final que es analizado a través de técnicas de biología molecular para realizar la respectiva detección del patógeno [8].…”
Section: Introductionunclassified
“…Usualmente, los virus se encuentran muy diluidos en agua (1 a 10 3 partículas virales/Lt de agua) [2,5,6], creando la necesidad de pretratamientos de la muestra para poder concentrar las partículas virales. Existen diferentes técnicas de concentración entre las cuales se encuentra la ultrafiltración tangencial (UFT).Esta técnica consiste en realizar una serie de filtrados en membranas millipore de distinto tamaño, dirigiendo la muestra a un filtro de flujo tangencial por medio de una bomba peristáltica de alta presión, produciendo dos fracciones, la filtrada de interés y la excluida por el filtro [7]. Posteriormente, se realiza una segunda ultrafiltración, de donde se obtiene el filtrado final que es analizado a través de técnicas de biología molecular para realizar la respectiva detección del patógeno [8].…”
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