Integrated Printed BDNF-stimulated HUCMSCs-derived Exosomes/collagen/chitosan Biological Scaffolds with 3D Printing Technology Promoted the Remodelling of Neural Networks After Traumatic Brain Injury

Overview

Journal Regen Biomater

Specialty Biomedical Engineering

Date 2023 Jan 23

PMID 36683754

Authors

Xiaoyin Liu

Jian Zhang

Xu Cheng

Peng Liu

Qingbo Feng

Shan Wang

Yuanyou Li

Haoran Gu

Lin Zhong

Miao Chen

Liangxue Zhou

Affiliations

Soon will be listed here.

Abstract

The restoration of nerve dysfunction after traumatic brain injury (TBI) faces huge challenges due to the limited self-regenerative abilities of nerve tissues. inductive recovery can be achieved utilizing biological scaffolds combined with endogenous human umbilical cord mesenchymal stem cells (HUCMSCs)-derived exosomes (MExos). In this study, brain-derived neurotrophic factor-stimulated HUCMSCs-derived exosomes (BMExos) were composited with collagen/chitosan by 3D printing technology. 3D-printed collagen/chitosan/BMExos (3D-CC-BMExos) scaffolds have excellent mechanical properties and biocompatibility. Subsequently, experiments showed that 3D-CC-BMExos therapy could improve the recovery of neuromotor function and cognitive function in a TBI model in rats. Consistent with the behavioural recovery, the results of histomorphological tests showed that 3D-CC-BMExos therapy could facilitate the remodelling of neural networks, such as improving the regeneration of nerve fibres, synaptic connections and myelin sheaths, in lesions after TBI.

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