A sturgeon cartilage extracellular matrix-derived bioactive bioink for tissue engineering applications

Author:

Meng Xiaolin,Zhou Zheng,Chen Xin,Ren Feng,Zhu Wenxiang,Zhu Shuai,Liu Hairong

Abstract

Three-dimensional (3D) bioprinting provides a promising strategy for tissue and organ engineering, and extracellular matrix (ECM)-derived bioinks greatly facilitate its applications in these areas. Decellularized sturgeon cartilage ECM (dSC-ECM)- derived bioinks for cartilage tissue engineering were fabricated with methacrylatemodified dSC-ECM (dSC-ECMMA) and sericin methacrylate (SerMA), which optimizedthe mechanical properties of their solidified hydrogels.dSC-ECM induces chondrocytes to form cell clusters and subsequently reduces their proliferation, but the proliferation of encapsulated chondrocytes was normal in solidified dSCECM-5 bioink samples, which contain 5 mg/mL dSC-ECMMA. Hence, this bioink was selected for further investigation. Lyophilized dSC-ECM-5 hydrogels showed connected pore microstructure, which is suitable for cell migration and nutrients transportation. ThisdSC-ECM-5 bioink exhibited high fidelity and good printability by testing via a 3D bioprinting system, and the chondrocytes loaded in printed hydrogel products were viable and able to grow, following incubation, in the cell culture medium. Solidified dSC-ECM-5 and SerMA bioinks loaded with chondrocytes were subcutaneously implanted into nude mice for 4 weeks to test the suitability of the bioink for cartilage tissue engineering. Compared to the SerMA bioink, the dSCECM-5 bioink significantly enhanced cartilage tissue regeneration and maturation in vivo, suggesting the potential of this bioink to be applied in cartilage tissue engineering in the future.

Publisher

AccScience Publishing

Subject

Industrial and Manufacturing Engineering,Materials Science (miscellaneous),Biotechnology

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