The invention relates to the technical field of
stem cell culture, in particular to a
protein-free non-programmed freezing medium for
umbilical cord mesenchymal stem cells as well as a preparation method and application of the
protein-free non-programmed freezing medium. The
cryopreservation solution comprises a basic solution, a nutritional supplement, a permeable protective agent, a non-permeable protective agent, a
cell sedimentation stabilizer, a
cell membrane protective agent, an
apoptosis inhibitor and an
antioxidant, the basic solution is DMEM / F-12 with the glucose content being smaller than or equal to 1000 mg / L. The
cryopreservation liquid is suitable for directly cryopreserving
umbilical cord mesenchymal stem cells at-80 DEG C after in-vitro amplification and before
stem cell treatment. The
cryopreservation liquid is free of serum and
protein and clear in chemical component, and the cryopreserved
umbilical cord mesenchymal stem cells are free of exogenous
pollution risk and
safer to use; after the cells are recovered, the viability is high, the adherence rate is high, and the
cell expansion is fast;
surface marker characteristics (phenotypes) and three-line differentiation potential of the mesenchymal stem cells can be maintained; optimization is carried out according to the cryopreservation and culture characteristics of the umbilical cord mesenchymal stem cells, the cryopreservation effect is improved, programmed cooling is not needed, and time and labor are saved.