Impact of antibody aggregation on a flowthrough anion-exchange membrane process.

نویسندگان

  • Ajay R Lajmi
  • Samuel Nochumson
  • Aym Berges
چکیده

The impact of typical anion-exchange flowthrough conditions on the IgG mass loading of an anion-exchange membrane scale-down unit (Mustang Q coin) was investigated. High performance size-exclusion chromatography and multiangle laser light scattering results suggested the presence of a small fraction of IgG aggregates with average radius >100 nm under anion-exchange flowthrough conditions. The small filtration area presented by the 0.35 mL membrane volume Mustang Q coin limited the membrane throughput due to fouling from the aggregates at higher antibody loading. Data in this report indicated that a 0.2 μm hybrid polyethersulfone and polyvinylidene fluoride membrane in-line prefilter with a minimum filtration area of 20 sq cm alleviated the Mustang Q coin fouling. The combined cake filtration and intermediate blocking model was proposed as the most likely membrane pore blocking mechanism. Increasing the filtration area in the in-line prefilter resulted in higher IgG mass throughput. Thus, using an appropriately sized in-line prefilter could provide more robust antibody throughput performance on scale-down membrane anion-exchange units.

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عنوان ژورنال:
  • Biotechnology progress

دوره 26 6  شماره 

صفحات  -

تاریخ انتشار 2010