Details

Autor(en) / Beteiligte

• Ng, Jian Yao
• Tan, Kee Ying Fremi
• Ee, Pui Lai Rachel

Titel

Sugar-Assisted Cryopreservation of Stem Cell-Laden Gellan Gum–Collagen Interpenetrating Network Hydrogels

Ist Teil von

• Biomacromolecules, 2022-07, Vol.23 (7), p.2803-2813

Ort / Verlag

United States: American Chemical Society

Erscheinungsjahr

2022

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Tissue engineering involves the transplantation of stem cell-laden hydrogels as synthetic constructs to replace damaged tissues. However, their time-consuming fabrication procedures are hurdles to widespread application in clinics. Fortunately, similar to cell banking, synthetic tissues could be cryopreserved for subsequent central distribution. Here, we report the use of trehalose and gellan gum as biomacromolecules to form a cryopreservable yet directly implantable hydrogel system for adipose-derived stem cell (ADSC) delivery. Through a modified cell encapsulation method and a preincubation step, adequate cryoprotection was afforded at 0.75 M trehalose to the encapsulated ADSCs. At this concentration, trehalose demonstrated lower propensity to induce apoptosis than 10% DMSO, the current gold standard cryoprotectant. Moreover, when cultured along with trehalose after thawing, the encapsulated ADSCs retained their stem cell-like phenotype and osteogenic differentiation capacity. Taken together, this study demonstrates the feasibility of an “off-the-shelf” biomacromolecule-based synthetic tissue to be applied in widespread tissue engineering applications.