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Research ArticleRESEARCH

Impact of Uncontrolled vs Controlled Rate Freeze-Thaw Technologies on Process Performance and Product Quality

Chakradhar Padala, Feroz Jameel, Nitin Rathore, Kapil Gupta and Ananth Sethuraman
PDA Journal of Pharmaceutical Science and Technology July 2010, 64 (4) 290-298;
Chakradhar Padala
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Feroz Jameel
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Nitin Rathore
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Kapil Gupta
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Ananth Sethuraman
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Abstract

Most biomolecules, owing to their marginal stability in liquid state, susceptibility to microbial growth, and tendency to foam upon storage/shipment in the liquid state, often require an alternate method of long-term storage. Cryopreservation is preferred, as it addresses most of these issues associated with liquid storage. However, the stability of the protein in the frozen state depends on the methodology of freezing/thawing and physico-chemical characteristics of the protein. A systematic study was undertaken to understand and evaluate the impact of freezing/thawing method on the process performance and product quality attributes using two freezing methods—conventional freezing in walk-in freezers and thawing in cold rooms using carboys as an uncontrolled rate method, and Celsius/CryoFin™ technologies as a controlled rate method. To assess the impact of freeze-thaw cycles on product quality, two types of proteins, a fusion protein and a peptibody (peptide fused to the Fc portion of the antibody), were used, employing appropriate stability-indicating assays. The results demonstrate superior process performance by the controlled rate freeze-thaw technology, both in terms of process times and cryoconcentration, compared to uncontrolled rate freeze thaw technology. Product impact studies indicate that the peptibody is sensitive to the method of freeze-thaw while the fusion protein is not and those that are sensitive to uncontrolled rate freeze-thaw processes can be effectively protected by controlled rate freeze-thaw technologies such as Celsius.

  • Freeze-thaw
  • Controlled rate freezing
  • Protein
  • Celsius-Pak
  • CryoVessel
  • Carboys
  • Cryoconcentration
  • © PDA, Inc. 2010
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PDA Journal of Pharmaceutical Science and Technology: 64 (4)
PDA Journal of Pharmaceutical Science and Technology
Vol. 64, Issue 4
July/August 2010
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Impact of Uncontrolled vs Controlled Rate Freeze-Thaw Technologies on Process Performance and Product Quality
Chakradhar Padala, Feroz Jameel, Nitin Rathore, Kapil Gupta, Ananth Sethuraman
PDA Journal of Pharmaceutical Science and Technology Jul 2010, 64 (4) 290-298;

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Impact of Uncontrolled vs Controlled Rate Freeze-Thaw Technologies on Process Performance and Product Quality
Chakradhar Padala, Feroz Jameel, Nitin Rathore, Kapil Gupta, Ananth Sethuraman
PDA Journal of Pharmaceutical Science and Technology Jul 2010, 64 (4) 290-298;
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