Ultrafiltration behavior of an Fc-fusion protein: Filtrate flux data and modeling

Youngbin Baek, Nripen Singh, Abhiram Arunkumar, Andrew Zydney

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Fc-fusion proteins are an important new class of biotherapeutics; however, there is currently little published data on the behavior of these proteins in downstream processing operations. The objective of this study was to evaluate the ultrafiltration behavior of a highly purified Fc-fusion protein in both citrate/phosphate and histidine buffers over a wide range of protein concentrations. Filtrate flux data were obtained using a Pellicon 3 tangential flow filtration cassette. Results were analyzed using a modified version of a recently developed ultrafiltration model that accounts for the effects of intermolecular interactions on protein mass transfer, suitably extended to include the flux in the pressure-dependent regime. The key parameters in this model were evaluated from independent measurements of the solution viscosity and osmotic pressure for protein concentrations up to 200 g/L. The filtrate flux and maximum achievable protein concentration in the histidine buffer were both significantly lower than the corresponding values in the citrate/phosphate buffer due primarily to the greater viscosity in the histidine buffer. The modified concentration polarization model was in good agreement with filtrate flux data over the full range of protein concentrations in both the pressure-dependent and pressure-independent regime. These results provide important insights into the factors controlling the ultrafiltration behavior of the Fc-fusion protein.

Original languageEnglish (US)
Pages (from-to)171-177
Number of pages7
JournalJournal of Membrane Science
Volume528
DOIs
StatePublished - Jan 1 2017

Fingerprint

Ultrafiltration
Fusion reactions
fusion
Fluxes
proteins
Proteins
histidine
Buffers
buffers
Histidine
citrates
Pressure
Viscosity
Citric Acid
phosphates
Phosphates
viscosity
osmosis
Osmotic Pressure
mass transfer

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

Cite this

Baek, Youngbin ; Singh, Nripen ; Arunkumar, Abhiram ; Zydney, Andrew. / Ultrafiltration behavior of an Fc-fusion protein : Filtrate flux data and modeling. In: Journal of Membrane Science. 2017 ; Vol. 528. pp. 171-177.
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Ultrafiltration behavior of an Fc-fusion protein : Filtrate flux data and modeling. / Baek, Youngbin; Singh, Nripen; Arunkumar, Abhiram; Zydney, Andrew.

In: Journal of Membrane Science, Vol. 528, 01.01.2017, p. 171-177.

Research output: Contribution to journalArticle

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