Protein-free cryopreservation media are specialized formulations designed to preserve cells and tissues at ultralow temperatures without the inclusion of any protein components, whether animal-derived, human-derived, or recombinant. Traditional cryopreservation protocols have relied on fetal bovine serum (FBS) as a key protective component, typically at concentrations of 20–90% combined with 5–10% dimethyl sulfoxide (DMSO). However, serum and its constituent proteins introduce substantial scientific, regulatory, and safety challenges that have driven the development of protein-free alternatives. Protein-free media represent the logical endpoint of the progressive removal of undefined biological materials from cryopreservation workflows, following the trajectory from serum-containing to serum-free to animal component-free formulations.
Applications
Protein-free cryopreservation media are particularly critical in cell and gene therapy manufacturing, where regulatory requirements demand defined, low-toxicity formulations. GMP-grade protein-free cryopreservation medium is recommended for the cryopreservation of various conventional mammalian cells, especially suitable for serum-free cultured stem cells, immune cells, and protein expression cells. NutriFreez® D10 has been extensively tested on multiple cell types, including human mesenchymal stem cells from bone marrow, adipose tissue, umbilical cord tissue, and dental pulp; human embryonic stem cells and induced pluripotent stem cells; human PBMCs; human endothelial cells; T cells including CAR-T cells and tumor-infiltrating lymphocytes; neurons; hybridomas; CHO cells; Vero cells; and multiple mammalian cell lines including MRC-5, HEK-293, HepG2, HeLa, BSC-1, BGM, 3T3, MA-10, BHK-21, as well as other extremely sensitive cell types.
