Towards a xeno-free and fully chemically defined cryopreservation medium for maintaining viability, recovery, and antigen-specific functionality of PBMC during long-term storage

Journal of Immunological Methods
Julia C SchulzHeiko Zimmermann

Abstract

Analysis of cryopreserved peripheral mononuclear cells (PBMC) is important for evaluating new vaccines in immune based therapies and in pathogenesis studies. To ensure comparable assay results from different laboratories and points of time, collaborative research in multicenter trials needs reliable and reproducible cryopreservation protocols that maintain cell viability and functionality. Current cryomedia consist largely of fetal bovine serum (FBS), a natural mix of growth factors, cytokines, and undefined compounds. Standardized procedures are not possible, as FBS can affect the antigen-specific T-cell response, the most important parameter in functionality assays. Also, worldwide sample exchange is complicated by the strict import restrictions on FBS, because of transfection risk. After establishing a serum-free cryopreservation protocol that maintains cell viability, recovery and antigen-specific T-cell response of PBMC comparably to FBS-based cryomedia (Germann et al., 2011), the aim of this study was the complete avoidance of animal proteins and products in combination with efficient cryopreservation. As long-term stability of the cryopreservation process is crucial for retrospective evaluation of samples at different po...Continue Reading

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Citations

Dec 21, 2012·Future Microbiology·Mathias HerrmannMartin P Grobusch
Apr 2, 2015·Clinics in Plastic Surgery·Zhiquan ShuLee L Q Pu
Sep 8, 2016·Biopreservation and Biobanking·Lothar LauterboeckBirgit Glasmacher
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Nov 9, 2019·Alternatives to Laboratory Animals : ATLA·Michelle HeslerHagen von Briesen
Apr 12, 2017·Biopreservation and Biobanking·Irene ConsuegraMa Ángeles Muñoz-Fernández
Aug 25, 2021·BioDrugs : Clinical Immunotherapeutics, Biopharmaceuticals and Gene Therapy·Xue Yao, Sandro Matosevic
Aug 29, 2021·Pharmaceutics·Christopher F van der WalleZein Azhari

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