Mass Spectrometry of Collagen-Containing Allogeneic Human Bone Tissue Material

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Regenerative Medicine

Background:

• 3D bioprinting requires advanced bioinks and hydrogels for living tissue analogue fabrication.
• Allogeneic collagen is a promising natural biomaterial for hydrogels due to its biocompatibility and structural role in the extracellular matrix.
• Assessing the protein composition of biomaterials is crucial for predicting construct behavior and regenerative potential.

Purpose of the Study:

• To characterize the protein composition of a lyophilized hydrogel derived from Lyoplast® bioimplant using proteomic analysis.
• To evaluate the potential of this hydrogel as a biomaterial for 3D bioprinting and regenerative medicine applications.

Main Methods:

• Mass spectrometry-based proteomic assay was performed on a lyophilized hydrogel sample.
• Identification and quantification of protein components within the hydrogel structure.

Main Results:

• The lyophilized hydrogel contains structural proteins, including six major collagen types (I, II, IV, IX, XXVII, XXVIII).
• Extracellular matrix proteins, mRNA-stabilizing proteins, and regeneration-inducing proteins were identified.
• The identified proteins suggest the hydrogel can support physiological reparative regeneration and regulate transcription.

Conclusions:

• Lyophilized hydrogels from Lyoplast® demonstrate significant potential as a biomaterial for 3D bioprinting.
• These hydrogels offer a promising alternative to synthetic and xenogeneic materials in regenerative medicine.
• The identified protein composition supports their use as a matrix and cell-containing component in bioinks.