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Comparison between carbohydrate and salt-based macromolecular crowders for cell preservation at higher temperatures

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Abstract

In this investigation, the macromolecular crowding effect of a carbohydrate-based polymer, pullulan, and a salt-based polymer, poly-(4-styrenesulfonic-acid) sodium salt (PSS) was compared for the storage of A549 lung carcinoma cells, at temperatures greater than that of liquid nitrogen storage tanks. A DoE-CCD response surface model was used to optimise medium compositions comprising DMSO and a macromolecular crowder (MMC; pullulan, PSS and their combinations). The effect of adding MMCs was evaluated in terms of post-preservation viability, apoptotic population and growth curve analysis. The optimised medium consisting of 10% DMSO and 3% pullulan in the basal medium (BM) could facilitate long-term cell preservation for 90 days at − 80 °C, resulting in cell viability of ∼83%. The results also showed a significant decrease in the apoptotic population at all time points for the optimised composition of the freezing medium. These results indicated that adding 3% pullulan to the freezing medium improved the post-thaw viability and reduced the apoptotic cell population.

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All data generated or analysed during this study are included in this published article and its Supplementary Information files. Any additional data will be made available upon reasonable request.

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Acknowledgements

The authors are thankful to DBT, GoI for funding aid. The authors are thankful to Gangwal Chemicals for providing Hayushibara's pullulan. The authors are also thankful to Devashree Jahangirdar, Pooja Sawant, Junaid Parkar and other members of the Nano-medicine Research Group, Institute of Chemical Technology, Mumbai, for their timely help in the undertaking of this project.

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AK: performed experiments, conceptualisation and writing—original draft and editing. AB: investigation and writing—review and editing. PDJ: conceptualisation, investigation supervision, project administration and writing—review and editing. RJ: supervision and project administration.

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Correspondence to Ratnesh Jain or Prajakta Dandekar.

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No animal or human trials were used for this research.

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Supplementary file1 (DOCX 1240 KB)

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Kumaran, A., Bhagwat, A., Jain, R. et al. Comparison between carbohydrate and salt-based macromolecular crowders for cell preservation at higher temperatures. 3 Biotech 13, 184 (2023). https://doi.org/10.1007/s13205-023-03571-6

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  • DOI: https://doi.org/10.1007/s13205-023-03571-6

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