AccScience Publishing / IJB / Online First / DOI: 10.36922/IJB025260245
Cite this article
11
Download
100
Views
Journal Browser
Volume | Year
Issue
Search
News and Announcements
View All
RESEARCH ARTICLE
Early Access

Inkjet bioprinting of neural progenitor NE-4C cells with promoted neuronal differentiation efficiency under retinoic acid treatment

Xinda Li1,2† Xiaolei Guo3,4† Jinzhou Feng1 Lihua Chen1 Huan X Xiong1 Ruxiang Xu1* Tao Xu1,2,5*
Show Less
1 Department of Neurosurgery, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu 610072, People’s Republic of China
2 Department of Mechanical Engineering, Tsinghua University, Beijing 100084, People’s Republic of China
3 Center for Medical Device Evaluation, National Medical Products Administration, Beijing 100081, People’s Republic of China
4 State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, People’s Republic of China
5 Center for Bio-intelligent Manufacturing and Living Matter Bioprinting, Research Institute of Tsinghua University in Shenzhen, Tsinghua University, Shenzhen, 518057, People’s Republic of China
†These authors contributed equally to this work.
Received: 24 June 2025 | Accepted: 25 July 2025 | Published online: 25 July 2025
© 2025 by the Author(s). This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution 4.0 International License ( https://creativecommons.org/licenses/by/4.0/ )
Abstract

During inkjet bioprinting, cells are subjected to shear stress directly while passing through the nozzles, which would cause reversible deformation on cell membranes. Moreover, other subcellular-level changes such as activation of gene pathways might also occur during inkjet bioprinting, leading to beneficial results. In this study, neural progenitor NE-4C cells were printed through 30μm thermal inkjet nozzles. Compared with manually pipetted cells (control group), a series of changes have occured on inkjet-bioprinted cells (inkjet group): Cell proliferation was down-regulated during the initial 4 days after bioprinting. Meanwhile, inkjet group exhibited stronger tolerance to high-concentration retinoic acid (RA). Most importantly, the expression level of early neuron marker tuj-1 was significantly higher in inkjet group, indicating the promotion of neuronal differentiation efficiency. Furthermore, RNA sequence and enrichment analysis was performed which had shown that cell-metabolism pathways were upregulated in inkjet group. These beneficial effects collectively suggested that inkjet bioprinting might be a promising strategy to accelerate neural tissue formation while further studies are performed.

Keywords
Inkjet bioprinting
Neural progenitor cells
Neural differentiation
Funding
This research is supported by National Natural Science Foundation of China (Grant No.52075285), Applied Basic Research Project of Sichuan Province (Grant No.2021YJ0563) and Natural Science Foundation of Sichuan Province (Grant No. 2023NSFSC0851).
Conflict of interest
The authors declare they have no competing interests.
Share
Back to top
International Journal of Bioprinting, Electronic ISSN: 2424-8002 Print ISSN: 2424-7723, Published by AccScience Publishing