Standardization of a method for freeze-drying of antibodies as ready to use therapeutic radiopharmaceuticals

Mwanza Wanjeh, David and Alemu, Aschalew and Strjova Arev, Marija and Arsova-Sarafinovska, Zorica and Apostolova, Paulina and Janevik-Ivanovska, Emilija (2020) Standardization of a method for freeze-drying of antibodies as ready to use therapeutic radiopharmaceuticals. Farmacia, Vol. 6 (1). pp. 142-149. ISSN 0014-8237

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Abstract

Monoclonal antibodies (mAbs) are currently assessed as a significant and growing class of drugs of biological origin. The goal of our investigation was to introduce and standardize an available protocol for freeze-drying a formulation of the conjugated antibody as a ready-to-use radiopharmaceutical product with therapeutic potential and to assess the stability and integrity of the obtained product. For that purpose, we introduced a shortened two-day protocol for freeze-drying of rituximab-1B4M- DTPA immunoconjugate and compared the appearance of the freeze-dried product with the products of a previously reported three-day freeze-drying protocol. The qualitative assessment of the final product was performed by infrared spectroscopy of the freeze-dried cake powders, measurement of the reconstitution times of the freeze-dried cakes and comparison of gel filtration profiles of obtained products. Considering the obtained results, we can conclude that the two days freeze-drying protocol is superior to the three days protocol based on the time and energy saved. More studies on the optimization and control of the critical freeze-drying process parameters and the critical formulation attributes are also encouraged, as well as the optimization of the conjugation and labelling protocols. None of the freeze-drying protocols produced detectable fragments. The product appearance, reconstitution times and opacity on reconstitution were similar and also the ATR/FTIR spectra demonstrating that the two freeze drying protocols yield products of similar quality.

Item Type: Article
Impact Factor Value: 1.527
Subjects: Medical and Health Sciences > Health biotechnology
Medical and Health Sciences > Other medical sciences
Divisions: Faculty of Medical Science
Depositing User: Emilija Janevik
Date Deposited: 23 Mar 2020 11:29
Last Modified: 23 Mar 2020 11:29
URI: https://eprints.ugd.edu.mk/id/eprint/23947

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