Vitrified Wharton's jelly tissue as a biomaterial for multiple tissue engineering applications

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Cryobiology

Background:

• Wharton's Jelly (WJ) is a valuable biomaterial for tissue engineering.
• Long-term preservation of WJ tissue requires optimization for availability.
• Vitrification at low temperatures is a potential preservation method.

Purpose of the Study:

• To evaluate the effect of low-temperature storage (-196°C) on WJ tissue.
• To compare vitrification versus conventional cryopreservation for WJ tissue.
• To assess WJ tissue preservation after one year of storage.

Main Methods:

• Human umbilical cord WJ tissues were isolated.
• Tissues were cryopreserved using vitrification or conventional methods.
• Histological analysis of extracellular matrix (ECM) and mesenchymal stromal cell (MSC) isolation/characterization were performed after 1 year at -196°C.

Main Results:

• Vitrified WJ samples retained ECM components (collagen, sGAGs) and cell nuclei.
• MSCs were successfully isolated and expanded from vitrified WJ tissues.
• Conventional cryopreservation yielded few viable cells, unsuitable for expansion.

Conclusions:

• Vitrification provides effective preservation of WJ tissue after one year of cryogenic storage.
• Vitrified WJ tissue maintains its structural integrity and cellular viability.
• This method supports the potential use of vitrified WJ in tissue engineering and regenerative medicine.